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1fb101afe4f28ada83721c4ac260de46d23504ee
neovim/src/nvim/ops.c
Magnus Groß 1fb101afe4 vim-patch:8.2.3609: internal error when ModeChanged is triggered recursively 
Problem:    Internal error when ModeChanged is triggered when v:event is
            already in use.
Solution:   Save and restore v:event if needed.
3075a45592

In the vim codebase there is no occurrence of get_vim_var_dict(VV_EVENT)
after the above patch, so in order to hold the same invariant in the
neovim codebase we needed to replace more occurrences than the related
vim patch.
2021-11-18 14:23:33 +01:00

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// This is an open source non-commercial project. Dear PVS-Studio, please check
// it. PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
/*
* ops.c: implementation of various operators: op_shift, op_delete, op_tilde,
* op_change, op_yank, do_put, do_join
*/
#include <assert.h>
#include <inttypes.h>
#include <stdbool.h>
#include <string.h>
#include "nvim/ascii.h"
#include "nvim/assert.h"
#include "nvim/buffer.h"
#include "nvim/change.h"
#include "nvim/charset.h"
#include "nvim/cursor.h"
#include "nvim/edit.h"
#include "nvim/eval.h"
#include "nvim/eval/typval.h"
#include "nvim/ex_cmds.h"
#include "nvim/ex_cmds2.h"
#include "nvim/ex_getln.h"
#include "nvim/extmark.h"
#include "nvim/fileio.h"
#include "nvim/fold.h"
#include "nvim/getchar.h"
#include "nvim/indent.h"
#include "nvim/lib/kvec.h"
#include "nvim/log.h"
#include "nvim/macros.h"
#include "nvim/mark.h"
#include "nvim/mbyte.h"
#include "nvim/memline.h"
#include "nvim/memory.h"
#include "nvim/message.h"
#include "nvim/misc1.h"
#include "nvim/move.h"
#include "nvim/normal.h"
#include "nvim/ops.h"
#include "nvim/option.h"
#include "nvim/os/input.h"
#include "nvim/os/time.h"
#include "nvim/path.h"
#include "nvim/plines.h"
#include "nvim/screen.h"
#include "nvim/search.h"
#include "nvim/state.h"
#include "nvim/strings.h"
#include "nvim/terminal.h"
#include "nvim/ui.h"
#include "nvim/undo.h"
#include "nvim/vim.h"
#include "nvim/window.h"
static yankreg_T y_regs[NUM_REGISTERS];
static yankreg_T *y_previous = NULL; // ptr to last written yankreg
// for behavior between start_batch_changes() and end_batch_changes())
static int batch_change_count = 0; // inside a script
static bool clipboard_delay_update = false; // delay clipboard update
static bool clipboard_needs_update = false; // clipboard was updated
static bool clipboard_didwarn = false;
/*
* structure used by block_prep, op_delete and op_yank for blockwise operators
* also op_change, op_shift, op_insert, op_replace - AKelly
*/
struct block_def {
int startspaces; // 'extra' cols before first char
int endspaces; // 'extra' cols after last char
int textlen; // chars in block
char_u *textstart; // pointer to 1st char (partially) in block
colnr_T textcol; // index of chars (partially) in block
colnr_T start_vcol; // start col of 1st char wholly inside block
colnr_T end_vcol; // start col of 1st char wholly after block
int is_short; // TRUE if line is too short to fit in block
int is_MAX; // TRUE if curswant==MAXCOL when starting
int is_oneChar; // TRUE if block within one character
int pre_whitesp; // screen cols of ws before block
int pre_whitesp_c; // chars of ws before block
colnr_T end_char_vcols; // number of vcols of post-block char
colnr_T start_char_vcols; // number of vcols of pre-block char
};
#ifdef INCLUDE_GENERATED_DECLARATIONS
# include "ops.c.generated.h"
#endif
// Flags for third item in "opchars".
#define OPF_LINES 1 // operator always works on lines
#define OPF_CHANGE 2 // operator changes text
/*
* The names of operators.
* IMPORTANT: Index must correspond with defines in vim.h!!!
* The third field indicates whether the operator always works on lines.
*/
static char opchars[][3] =
{
{ NUL, NUL, 0 }, // OP_NOP
{ 'd', NUL, OPF_CHANGE }, // OP_DELETE
{ 'y', NUL, 0 }, // OP_YANK
{ 'c', NUL, OPF_CHANGE }, // OP_CHANGE
{ '<', NUL, OPF_LINES | OPF_CHANGE }, // OP_LSHIFT
{ '>', NUL, OPF_LINES | OPF_CHANGE }, // OP_RSHIFT
{ '!', NUL, OPF_LINES | OPF_CHANGE }, // OP_FILTER
{ 'g', '~', OPF_CHANGE }, // OP_TILDE
{ '=', NUL, OPF_LINES | OPF_CHANGE }, // OP_INDENT
{ 'g', 'q', OPF_LINES | OPF_CHANGE }, // OP_FORMAT
{ ':', NUL, OPF_LINES }, // OP_COLON
{ 'g', 'U', OPF_CHANGE }, // OP_UPPER
{ 'g', 'u', OPF_CHANGE }, // OP_LOWER
{ 'J', NUL, OPF_LINES | OPF_CHANGE }, // DO_JOIN
{ 'g', 'J', OPF_LINES | OPF_CHANGE }, // DO_JOIN_NS
{ 'g', '?', OPF_CHANGE }, // OP_ROT13
{ 'r', NUL, OPF_CHANGE }, // OP_REPLACE
{ 'I', NUL, OPF_CHANGE }, // OP_INSERT
{ 'A', NUL, OPF_CHANGE }, // OP_APPEND
{ 'z', 'f', 0 }, // OP_FOLD
{ 'z', 'o', OPF_LINES }, // OP_FOLDOPEN
{ 'z', 'O', OPF_LINES }, // OP_FOLDOPENREC
{ 'z', 'c', OPF_LINES }, // OP_FOLDCLOSE
{ 'z', 'C', OPF_LINES }, // OP_FOLDCLOSEREC
{ 'z', 'd', OPF_LINES }, // OP_FOLDDEL
{ 'z', 'D', OPF_LINES }, // OP_FOLDDELREC
{ 'g', 'w', OPF_LINES | OPF_CHANGE }, // OP_FORMAT2
{ 'g', '@', OPF_CHANGE }, // OP_FUNCTION
{ Ctrl_A, NUL, OPF_CHANGE }, // OP_NR_ADD
{ Ctrl_X, NUL, OPF_CHANGE }, // OP_NR_SUB
};
/*
* Translate a command name into an operator type.
* Must only be called with a valid operator name!
*/
int get_op_type(int char1, int char2)
{
int i;
if (char1 == 'r') {
// ignore second character
return OP_REPLACE;
}
if (char1 == '~') {
// when tilde is an operator
return OP_TILDE;
}
if (char1 == 'g' && char2 == Ctrl_A) {
// add
return OP_NR_ADD;
}
if (char1 == 'g' && char2 == Ctrl_X) {
// subtract
return OP_NR_SUB;
}
if (char1 == 'z' && char2 == 'y') { // OP_YANK
return OP_YANK;
}
for (i = 0;; i++) {
if (opchars[i][0] == char1 && opchars[i][1] == char2) {
break;
}
if (i == (int)(ARRAY_SIZE(opchars) - 1)) {
internal_error("get_op_type()");
break;
}
}
return i;
}
/*
* Return TRUE if operator "op" always works on whole lines.
*/
int op_on_lines(int op)
{
return opchars[op][2] & OPF_LINES;
}
// Return TRUE if operator "op" changes text.
int op_is_change(int op)
{
return opchars[op][2] & OPF_CHANGE;
}
/*
* Get first operator command character.
* Returns 'g' or 'z' if there is another command character.
*/
int get_op_char(int optype)
{
return opchars[optype][0];
}
/*
* Get second operator command character.
*/
int get_extra_op_char(int optype)
{
return opchars[optype][1];
}
/*
* op_shift - handle a shift operation
*/
void op_shift(oparg_T *oap, int curs_top, int amount)
{
long i;
int first_char;
int block_col = 0;
if (u_save((linenr_T)(oap->start.lnum - 1),
(linenr_T)(oap->end.lnum + 1)) == FAIL) {
return;
}
if (oap->motion_type == kMTBlockWise) {
block_col = curwin->w_cursor.col;
}
for (i = oap->line_count - 1; i >= 0; i--) {
first_char = *get_cursor_line_ptr();
if (first_char == NUL) { // empty line
curwin->w_cursor.col = 0;
} else if (oap->motion_type == kMTBlockWise) {
shift_block(oap, amount);
} else if (first_char != '#' || !preprocs_left()) {
// Move the line right if it doesn't start with '#', 'smartindent'
// isn't set or 'cindent' isn't set or '#' isn't in 'cino'.
shift_line(oap->op_type == OP_LSHIFT, p_sr, amount, false);
}
++curwin->w_cursor.lnum;
}
if (oap->motion_type == kMTBlockWise) {
curwin->w_cursor.lnum = oap->start.lnum;
curwin->w_cursor.col = block_col;
} else if (curs_top) { // put cursor on first line, for ">>"
curwin->w_cursor.lnum = oap->start.lnum;
beginline(BL_SOL | BL_FIX); // shift_line() may have set cursor.col
} else {
--curwin->w_cursor.lnum; // put cursor on last line, for ":>"
}
// The cursor line is not in a closed fold
foldOpenCursor();
if (oap->line_count > p_report) {
char *op;
if (oap->op_type == OP_RSHIFT) {
op = ">";
} else {
op = "<";
}
char *msg_line_single = NGETTEXT("%" PRId64 " line %sed %d time",
"%" PRId64 " line %sed %d times", amount);
char *msg_line_plural = NGETTEXT("%" PRId64 " lines %sed %d time",
"%" PRId64 " lines %sed %d times", amount);
vim_snprintf((char *)IObuff, IOSIZE,
NGETTEXT(msg_line_single, msg_line_plural, oap->line_count),
(int64_t)oap->line_count, op, amount);
msg_attr_keep((char *)IObuff, 0, true, false);
}
/*
* Set "'[" and "']" marks.
*/
curbuf->b_op_start = oap->start;
curbuf->b_op_end.lnum = oap->end.lnum;
curbuf->b_op_end.col = (colnr_T)STRLEN(ml_get(oap->end.lnum));
if (curbuf->b_op_end.col > 0) {
curbuf->b_op_end.col--;
}
changed_lines(oap->start.lnum, 0, oap->end.lnum + 1, 0L, true);
}
/// Shift the current line one shiftwidth left (if left != 0) or right
/// leaves cursor on first blank in the line.
///
/// @param call_changed_bytes call changed_bytes()
void shift_line(int left, int round, int amount, int call_changed_bytes)
{
int count;
int i, j;
int p_sw = (int)get_sw_value_indent(curbuf);
count = get_indent(); // get current indent
if (round) { // round off indent
i = count / p_sw; // number of p_sw rounded down
j = count % p_sw; // extra spaces
if (j && left) { // first remove extra spaces
amount--;
}
if (left) {
i -= amount;
if (i < 0) {
i = 0;
}
} else {
i += amount;
}
count = i * p_sw;
} else { // original vi indent
if (left) {
count -= p_sw * amount;
if (count < 0) {
count = 0;
}
} else {
count += p_sw * amount;
}
}
// Set new indent
if (State & VREPLACE_FLAG) {
change_indent(INDENT_SET, count, false, NUL, call_changed_bytes);
} else {
(void)set_indent(count, call_changed_bytes ? SIN_CHANGED : 0);
}
}
/*
* Shift one line of the current block one shiftwidth right or left.
* Leaves cursor on first character in block.
*/
static void shift_block(oparg_T *oap, int amount)
{
const bool left = (oap->op_type == OP_LSHIFT);
const int oldstate = State;
char_u *newp;
const int oldcol = curwin->w_cursor.col;
int p_sw = (int)get_sw_value_indent(curbuf);
long *p_vts = curbuf->b_p_vts_array;
const long p_ts = curbuf->b_p_ts;
struct block_def bd;
int incr;
int i = 0, j = 0;
const int old_p_ri = p_ri;
p_ri = 0; // don't want revins in indent
State = INSERT; // don't want REPLACE for State
block_prep(oap, &bd, curwin->w_cursor.lnum, true);
if (bd.is_short) {
return;
}
// total is number of screen columns to be inserted/removed
int total = (int)((unsigned)amount * (unsigned)p_sw);
if ((total / p_sw) != amount) {
return; // multiplication overflow
}
char_u *const oldp = get_cursor_line_ptr();
int startcol, oldlen, newlen;
if (!left) {
/*
* 1. Get start vcol
* 2. Total ws vcols
* 3. Divvy into TABs & spp
* 4. Construct new string
*/
total += bd.pre_whitesp; // all virtual WS up to & incl a split TAB
colnr_T ws_vcol = bd.start_vcol - bd.pre_whitesp;
char_u *old_textstart = bd.textstart;
if (bd.startspaces) {
if (utfc_ptr2len(bd.textstart) == 1) {
bd.textstart++;
} else {
ws_vcol = 0;
bd.startspaces = 0;
}
}
for (; ascii_iswhite(*bd.textstart); ) {
// TODO: is passing bd.textstart for start of the line OK?
incr = lbr_chartabsize_adv(bd.textstart, &bd.textstart, (bd.start_vcol));
total += incr;
bd.start_vcol += incr;
}
// OK, now total=all the VWS reqd, and textstart points at the 1st
// non-ws char in the block.
if (!curbuf->b_p_et) {
tabstop_fromto(ws_vcol, ws_vcol + total, p_ts, p_vts, &i, &j);
} else {
j = total;
}
// if we're splitting a TAB, allow for it
int col_pre = bd.pre_whitesp_c - (bd.startspaces != 0);
bd.textcol -= col_pre;
const int len = (int)STRLEN(bd.textstart) + 1;
int col = bd.textcol + i +j + len;
assert(col >= 0);
newp = (char_u *)xmalloc((size_t)col);
memset(newp, NUL, (size_t)col);
memmove(newp, oldp, (size_t)bd.textcol);
startcol = bd.textcol;
oldlen = (int)(bd.textstart-old_textstart) + col_pre;
newlen = i+j;
memset(newp + bd.textcol, TAB, (size_t)i);
memset(newp + bd.textcol + i, ' ', (size_t)j);
// the end
memmove(newp + bd.textcol + i + j, bd.textstart, (size_t)len);
} else { // left
colnr_T destination_col; // column to which text in block will
// be shifted
char_u *verbatim_copy_end; // end of the part of the line which is
// copied verbatim
colnr_T verbatim_copy_width; // the (displayed) width of this part
// of line
size_t fill; // nr of spaces that replace a TAB
size_t new_line_len; // the length of the line after the
// block shift
char_u *non_white = bd.textstart;
/*
* Firstly, let's find the first non-whitespace character that is
* displayed after the block's start column and the character's column
* number. Also, let's calculate the width of all the whitespace
* characters that are displayed in the block and precede the searched
* non-whitespace character.
*/
// If "bd.startspaces" is set, "bd.textstart" points to the character,
// the part of which is displayed at the block's beginning. Let's start
// searching from the next character.
if (bd.startspaces) {
MB_PTR_ADV(non_white);
}
// The character's column is in "bd.start_vcol".
colnr_T non_white_col = bd.start_vcol;
while (ascii_iswhite(*non_white)) {
incr = lbr_chartabsize_adv(bd.textstart, &non_white, non_white_col);
non_white_col += incr;
}
const colnr_T block_space_width = non_white_col - oap->start_vcol;
// We will shift by "total" or "block_space_width", whichever is less.
const colnr_T shift_amount = block_space_width < total
? block_space_width
: total;
// The column to which we will shift the text.
destination_col = non_white_col - shift_amount;
// Now let's find out how much of the beginning of the line we can
// reuse without modification.
verbatim_copy_end = bd.textstart;
verbatim_copy_width = bd.start_vcol;
// If "bd.startspaces" is set, "bd.textstart" points to the character
// preceding the block. We have to subtract its width to obtain its
// column number.
if (bd.startspaces) {
verbatim_copy_width -= bd.start_char_vcols;
}
while (verbatim_copy_width < destination_col) {
char_u *line = verbatim_copy_end;
// TODO: is passing verbatim_copy_end for start of the line OK?
incr = lbr_chartabsize(line, verbatim_copy_end, verbatim_copy_width);
if (verbatim_copy_width + incr > destination_col) {
break;
}
verbatim_copy_width += incr;
MB_PTR_ADV(verbatim_copy_end);
}
// If "destination_col" is different from the width of the initial
// part of the line that will be copied, it means we encountered a tab
// character, which we will have to partly replace with spaces.
assert(destination_col - verbatim_copy_width >= 0);
fill = (size_t)(destination_col - verbatim_copy_width);
assert(verbatim_copy_end - oldp >= 0);
const size_t verbatim_diff = (size_t)(verbatim_copy_end - oldp);
// The replacement line will consist of:
// - the beginning of the original line up to "verbatim_copy_end",
// - "fill" number of spaces,
// - the rest of the line, pointed to by non_white.
new_line_len = verbatim_diff + fill + STRLEN(non_white) + 1;
newp = (char_u *)xmalloc(new_line_len);
startcol = (int)verbatim_diff;
oldlen = bd.textcol + (int)(non_white - bd.textstart) - (int)verbatim_diff;
newlen = (int)fill;
memmove(newp, oldp, verbatim_diff);
memset(newp + verbatim_diff, ' ', fill);
STRMOVE(newp + verbatim_diff + fill, non_white);
}
// replace the line
ml_replace(curwin->w_cursor.lnum, newp, false);
changed_bytes(curwin->w_cursor.lnum, bd.textcol);
extmark_splice_cols(curbuf, (int)curwin->w_cursor.lnum-1, startcol,
oldlen, newlen,
kExtmarkUndo);
State = oldstate;
curwin->w_cursor.col = oldcol;
p_ri = old_p_ri;
}
/*
* Insert string "s" (b_insert ? before : after) block :AKelly
* Caller must prepare for undo.
*/
static void block_insert(oparg_T *oap, char_u *s, int b_insert, struct block_def *bdp)
{
int p_ts;
int count = 0; // extra spaces to replace a cut TAB
int spaces = 0; // non-zero if cutting a TAB
colnr_T offset; // pointer along new line
size_t s_len = STRLEN(s);
char_u *newp, *oldp; // new, old lines
linenr_T lnum; // loop var
int oldstate = State;
State = INSERT; // don't want REPLACE for State
for (lnum = oap->start.lnum + 1; lnum <= oap->end.lnum; lnum++) {
block_prep(oap, bdp, lnum, true);
if (bdp->is_short && b_insert) {
continue; // OP_INSERT, line ends before block start
}
oldp = ml_get(lnum);
if (b_insert) {
p_ts = bdp->start_char_vcols;
spaces = bdp->startspaces;
if (spaces != 0) {
count = p_ts - 1; // we're cutting a TAB
}
offset = bdp->textcol;
} else { // append
p_ts = bdp->end_char_vcols;
if (!bdp->is_short) { // spaces = padding after block
spaces = (bdp->endspaces ? p_ts - bdp->endspaces : 0);
if (spaces != 0) {
count = p_ts - 1; // we're cutting a TAB
}
offset = bdp->textcol + bdp->textlen - (spaces != 0);
} else { // spaces = padding to block edge
// if $ used, just append to EOL (ie spaces==0)
if (!bdp->is_MAX) {
spaces = (oap->end_vcol - bdp->end_vcol) + 1;
}
count = spaces;
offset = bdp->textcol + bdp->textlen;
}
}
if (spaces > 0) {
int off;
// Avoid starting halfway through a multi-byte character.
if (b_insert) {
off = utf_head_off(oldp, oldp + offset + spaces);
} else {
off = (*mb_off_next)(oldp, oldp + offset);
offset += off;
}
spaces -= off;
count -= off;
}
assert(count >= 0);
newp = (char_u *)xmalloc(STRLEN(oldp) + s_len + (size_t)count + 1);
// copy up to shifted part
memmove(newp, oldp, (size_t)offset);
oldp += offset;
int startcol = offset;
// insert pre-padding
memset(newp + offset, ' ', (size_t)spaces);
// copy the new text
memmove(newp + offset + spaces, s, s_len);
offset += (int)s_len;
int skipped = 0;
if (spaces && !bdp->is_short) {
// insert post-padding
memset(newp + offset + spaces, ' ', (size_t)(p_ts - spaces));
// We're splitting a TAB, don't copy it.
oldp++;
// We allowed for that TAB, remember this now
count++;
skipped = 1;
}
if (spaces > 0) {
offset += count;
}
STRMOVE(newp + offset, oldp);
ml_replace(lnum, newp, false);
extmark_splice_cols(curbuf, (int)lnum-1, startcol,
skipped, offset-startcol, kExtmarkUndo);
if (lnum == oap->end.lnum) {
// Set "']" mark to the end of the block instead of the end of
// the insert in the first line.
curbuf->b_op_end.lnum = oap->end.lnum;
curbuf->b_op_end.col = offset;
}
} // for all lnum
changed_lines(oap->start.lnum + 1, 0, oap->end.lnum + 1, 0L, true);
State = oldstate;
}
/*
* op_reindent - handle reindenting a block of lines.
*/
void op_reindent(oparg_T *oap, Indenter how)
{
long i;
char_u *l;
int amount;
linenr_T first_changed = 0;
linenr_T last_changed = 0;
linenr_T start_lnum = curwin->w_cursor.lnum;
// Don't even try when 'modifiable' is off.
if (!MODIFIABLE(curbuf)) {
emsg(_(e_modifiable));
return;
}
for (i = oap->line_count - 1; i >= 0 && !got_int; i--) {
/* it's a slow thing to do, so give feedback so there's no worry that
* the computer's just hung. */
if (i > 1
&& (i % 50 == 0 || i == oap->line_count - 1)
&& oap->line_count > p_report) {
smsg(_("%" PRId64 " lines to indent... "), (int64_t)i);
}
/*
* Be vi-compatible: For lisp indenting the first line is not
* indented, unless there is only one line.
*/
if (i != oap->line_count - 1 || oap->line_count == 1
|| how != get_lisp_indent) {
l = skipwhite(get_cursor_line_ptr());
if (*l == NUL) { // empty or blank line
amount = 0;
} else {
amount = how(); // get the indent for this line
}
if (amount >= 0 && set_indent(amount, SIN_UNDO)) {
// did change the indent, call changed_lines() later
if (first_changed == 0) {
first_changed = curwin->w_cursor.lnum;
}
last_changed = curwin->w_cursor.lnum;
}
}
++curwin->w_cursor.lnum;
curwin->w_cursor.col = 0; // make sure it's valid
}
// put cursor on first non-blank of indented line
curwin->w_cursor.lnum = start_lnum;
beginline(BL_SOL | BL_FIX);
/* Mark changed lines so that they will be redrawn. When Visual
* highlighting was present, need to continue until the last line. When
* there is no change still need to remove the Visual highlighting. */
if (last_changed != 0) {
changed_lines(first_changed, 0,
oap->is_VIsual ? start_lnum + oap->line_count :
last_changed + 1, 0L, true);
} else if (oap->is_VIsual) {
redraw_curbuf_later(INVERTED);
}
if (oap->line_count > p_report) {
i = oap->line_count - (i + 1);
smsg(NGETTEXT("%" PRId64 " line indented ",
"%" PRId64 " lines indented ", i),
(int64_t)i);
}
// set '[ and '] marks
curbuf->b_op_start = oap->start;
curbuf->b_op_end = oap->end;
}
/*
* Keep the last expression line here, for repeating.
*/
static char_u *expr_line = NULL;
/*
* Get an expression for the "\"=expr1" or "CTRL-R =expr1"
* Returns '=' when OK, NUL otherwise.
*/
int get_expr_register(void)
{
char_u *new_line;
new_line = getcmdline('=', 0L, 0, true);
if (new_line == NULL) {
return NUL;
}
if (*new_line == NUL) { // use previous line
xfree(new_line);
} else {
set_expr_line(new_line);
}
return '=';
}
/*
* Set the expression for the '=' register.
* Argument must be an allocated string.
*/
void set_expr_line(char_u *new_line)
{
xfree(expr_line);
expr_line = new_line;
}
/*
* Get the result of the '=' register expression.
* Returns a pointer to allocated memory, or NULL for failure.
*/
char_u *get_expr_line(void)
{
char_u *expr_copy;
char_u *rv;
static int nested = 0;
if (expr_line == NULL) {
return NULL;
}
/* Make a copy of the expression, because evaluating it may cause it to be
* changed. */
expr_copy = vim_strsave(expr_line);
/* When we are invoked recursively limit the evaluation to 10 levels.
* Then return the string as-is. */
if (nested >= 10) {
return expr_copy;
}
nested++;
rv = eval_to_string(expr_copy, NULL, true);
nested--;
xfree(expr_copy);
return rv;
}
/*
* Get the '=' register expression itself, without evaluating it.
*/
char_u *get_expr_line_src(void)
{
if (expr_line == NULL) {
return NULL;
}
return vim_strsave(expr_line);
}
/// Returns whether `regname` is a valid name of a yank register.
/// Note: There is no check for 0 (default register), caller should do this.
/// The black hole register '_' is regarded as valid.
///
/// @param regname name of register
/// @param writing allow only writable registers
bool valid_yank_reg(int regname, bool writing)
{
if ((regname > 0 && ASCII_ISALNUM(regname))
|| (!writing && vim_strchr((char_u *)"/.%:=", regname) != NULL)
|| regname == '#'
|| regname == '"'
|| regname == '-'
|| regname == '_'
|| regname == '*'
|| regname == '+') {
return true;
}
return false;
}
/// Return yankreg_T to use, according to the value of `regname`.
/// Cannot handle the '_' (black hole) register.
/// Must only be called with a valid register name!
///
/// @param regname The name of the register used or 0 for the unnamed register
/// @param mode One of the following three flags:
///
/// `YREG_PASTE`:
/// Prepare for pasting the register `regname`. With no regname specified,
/// read from last written register, or from unnamed clipboard (depending on the
/// `clipboard=unnamed` option). Queries the clipboard provider if necessary.
///
/// `YREG_YANK`:
/// Preparare for yanking into `regname`. With no regname specified,
/// yank into `"0` register. Update `y_previous` for next unnamed paste.
///
/// `YREG_PUT`:
/// Obtain the location that would be read when pasting `regname`.
yankreg_T *get_yank_register(int regname, int mode)
{
yankreg_T *reg;
if (mode == YREG_PASTE && get_clipboard(regname, &reg, false)) {
// reg is set to clipboard contents.
return reg;
} else if (mode != YREG_YANK
&& (regname == 0 || regname == '"' || regname == '*' || regname == '+')
&& y_previous != NULL) {
// in case clipboard not available, paste from previous used register
return y_previous;
}
int i = op_reg_index(regname);
// when not 0-9, a-z, A-Z or '-'/'+'/'*': use register 0
if (i == -1) {
i = 0;
}
reg = &y_regs[i];
if (mode == YREG_YANK) {
// remember the written register for unnamed paste
y_previous = reg;
}
return reg;
}
static bool is_append_register(int regname)
{
return ASCII_ISUPPER(regname);
}
/// @see get_yank_register
/// @returns true when register should be inserted literally
/// (selection or clipboard)
static inline bool is_literal_register(int regname)
FUNC_ATTR_CONST
{
return regname == '*' || regname == '+';
}
/// Returns a copy of contents in register `name`
/// for use in do_put. Should be freed by caller.
yankreg_T *copy_register(int name)
FUNC_ATTR_NONNULL_RET
{
yankreg_T *reg = get_yank_register(name, YREG_PASTE);
yankreg_T *copy = xmalloc(sizeof(yankreg_T));
*copy = *reg;
if (copy->y_size == 0) {
copy->y_array = NULL;
} else {
copy->y_array = xcalloc(copy->y_size, sizeof(char_u *));
for (size_t i = 0; i < copy->y_size; i++) {
copy->y_array[i] = vim_strsave(reg->y_array[i]);
}
}
return copy;
}
/// check if the current yank register has kMTLineWise register type
bool yank_register_mline(int regname)
{
if (regname != 0 && !valid_yank_reg(regname, false)) {
return false;
}
if (regname == '_') { // black hole is always empty
return false;
}
yankreg_T *reg = get_yank_register(regname, YREG_PASTE);
return reg->y_type == kMTLineWise;
}
/*
* Start or stop recording into a yank register.
*
* Return FAIL for failure, OK otherwise.
*/
int do_record(int c)
{
char_u *p;
static int regname;
yankreg_T *old_y_previous;
int retval;
if (reg_recording == 0) {
// start recording
// registers 0-9, a-z and " are allowed
if (c < 0 || (!ASCII_ISALNUM(c) && c != '"')) {
retval = FAIL;
} else {
reg_recording = c;
showmode();
regname = c;
retval = OK;
}
} else { // stop recording
/*
* Get the recorded key hits. K_SPECIAL and CSI will be escaped, this
* needs to be removed again to put it in a register. exec_reg then
* adds the escaping back later.
*/
reg_recording = 0;
if (ui_has(kUIMessages)) {
showmode();
} else {
msg("");
}
p = get_recorded();
if (p == NULL) {
retval = FAIL;
} else {
// Remove escaping for CSI and K_SPECIAL in multi-byte chars.
vim_unescape_csi(p);
/*
* We don't want to change the default register here, so save and
* restore the current register name.
*/
old_y_previous = y_previous;
retval = stuff_yank(regname, p);
y_previous = old_y_previous;
}
}
return retval;
}
static void set_yreg_additional_data(yankreg_T *reg, dict_T *additional_data)
FUNC_ATTR_NONNULL_ARG(1)
{
if (reg->additional_data == additional_data) {
return;
}
tv_dict_unref(reg->additional_data);
reg->additional_data = additional_data;
}
/*
* Stuff string "p" into yank register "regname" as a single line (append if
* uppercase). "p" must have been allocated.
*
* return FAIL for failure, OK otherwise
*/
static int stuff_yank(int regname, char_u *p)
{
// check for read-only register
if (regname != 0 && !valid_yank_reg(regname, true)) {
xfree(p);
return FAIL;
}
if (regname == '_') { // black hole: don't do anything
xfree(p);
return OK;
}
yankreg_T *reg = get_yank_register(regname, YREG_YANK);
if (is_append_register(regname) && reg->y_array != NULL) {
char_u **pp = &(reg->y_array[reg->y_size - 1]);
char_u *lp = xmalloc(STRLEN(*pp) + STRLEN(p) + 1);
STRCPY(lp, *pp);
// TODO(philix): use xstpcpy() in stuff_yank()
STRCAT(lp, p);
xfree(p);
xfree(*pp);
*pp = lp;
} else {
free_register(reg);
set_yreg_additional_data(reg, NULL);
reg->y_array = (char_u **)xmalloc(sizeof(char_u *));
reg->y_array[0] = p;
reg->y_size = 1;
reg->y_type = kMTCharWise;
}
reg->timestamp = os_time();
return OK;
}
static int execreg_lastc = NUL;
/// Execute a yank register: copy it into the stuff buffer
///
/// @param colon insert ':' before each line
/// @param addcr always add '\n' to end of line
/// @param silent set "silent" flag in typeahead buffer
///
/// @return FAIL for failure, OK otherwise
int do_execreg(int regname, int colon, int addcr, int silent)
{
char_u *p;
int retval = OK;
if (regname == '@') { // repeat previous one
if (execreg_lastc == NUL) {
emsg(_("E748: No previously used register"));
return FAIL;
}
regname = execreg_lastc;
}
// check for valid regname
if (regname == '%' || regname == '#' || !valid_yank_reg(regname, false)) {
emsg_invreg(regname);
return FAIL;
}
execreg_lastc = regname;
if (regname == '_') { // black hole: don't stuff anything
return OK;
}
if (regname == ':') { // use last command line
if (last_cmdline == NULL) {
emsg(_(e_nolastcmd));
return FAIL;
}
// don't keep the cmdline containing @:
XFREE_CLEAR(new_last_cmdline);
// Escape all control characters with a CTRL-V
p = vim_strsave_escaped_ext(last_cmdline,
(char_u *)"\001\002\003\004\005\006\007"
"\010\011\012\013\014\015\016\017"
"\020\021\022\023\024\025\026\027"
"\030\031\032\033\034\035\036\037",
Ctrl_V, false);
// When in Visual mode "'<,'>" will be prepended to the command.
// Remove it when it's already there.
if (VIsual_active && STRNCMP(p, "'<,'>", 5) == 0) {
retval = put_in_typebuf(p + 5, true, true, silent);
} else {
retval = put_in_typebuf(p, true, true, silent);
}
xfree(p);
} else if (regname == '=') {
p = get_expr_line();
if (p == NULL) {
return FAIL;
}
retval = put_in_typebuf(p, true, colon, silent);
xfree(p);
} else if (regname == '.') { // use last inserted text
p = get_last_insert_save();
if (p == NULL) {
emsg(_(e_noinstext));
return FAIL;
}
retval = put_in_typebuf(p, false, colon, silent);
xfree(p);
} else {
yankreg_T *reg = get_yank_register(regname, YREG_PASTE);
if (reg->y_array == NULL) {
return FAIL;
}
// Disallow remapping for ":@r".
int remap = colon ? REMAP_NONE : REMAP_YES;
/*
* Insert lines into typeahead buffer, from last one to first one.
*/
put_reedit_in_typebuf(silent);
char_u *escaped;
for (size_t i = reg->y_size; i-- > 0;) { // from y_size - 1 to 0 included
// insert NL between lines and after last line if type is kMTLineWise
if (reg->y_type == kMTLineWise || i < reg->y_size - 1 || addcr) {
if (ins_typebuf((char_u *)"\n", remap, 0, true, silent) == FAIL) {
return FAIL;
}
}
escaped = vim_strsave_escape_csi(reg->y_array[i]);
retval = ins_typebuf(escaped, remap, 0, true, silent);
xfree(escaped);
if (retval == FAIL) {
return FAIL;
}
if (colon
&& ins_typebuf((char_u *)":", remap, 0, true, silent) == FAIL) {
return FAIL;
}
}
reg_executing = regname == 0 ? '"' : regname; // disable the 'q' command
}
return retval;
}
/*
* If "restart_edit" is not zero, put it in the typeahead buffer, so that it's
* used only after other typeahead has been processed.
*/
static void put_reedit_in_typebuf(int silent)
{
char_u buf[3];
if (restart_edit != NUL) {
if (restart_edit == 'V') {
buf[0] = 'g';
buf[1] = 'R';
buf[2] = NUL;
} else {
buf[0] = (char_u)(restart_edit == 'I' ? 'i' : restart_edit);
buf[1] = NUL;
}
if (ins_typebuf(buf, REMAP_NONE, 0, true, silent) == OK) {
restart_edit = NUL;
}
}
}
/// Insert register contents "s" into the typeahead buffer, so that it will be
/// executed again.
///
/// @param esc when true then it is to be taken literally: Escape CSI
/// characters and no remapping.
/// @param colon add ':' before the line
static int put_in_typebuf(char_u *s, bool esc, bool colon, int silent)
{
int retval = OK;
put_reedit_in_typebuf(silent);
if (colon) {
retval = ins_typebuf((char_u *)"\n", REMAP_NONE, 0, true, silent);
}
if (retval == OK) {
char_u *p;
if (esc) {
p = vim_strsave_escape_csi(s);
} else {
p = s;
}
if (p == NULL) {
retval = FAIL;
} else {
retval = ins_typebuf(p, esc ? REMAP_NONE : REMAP_YES, 0, true, silent);
}
if (esc) {
xfree(p);
}
}
if (colon && retval == OK) {
retval = ins_typebuf((char_u *)":", REMAP_NONE, 0, true, silent);
}
return retval;
}
/// Insert a yank register: copy it into the Read buffer.
/// Used by CTRL-R command and middle mouse button in insert mode.
///
/// @param literally_arg insert literally, not as if typed
///
/// @return FAIL for failure, OK otherwise
int insert_reg(int regname, bool literally_arg)
{
int retval = OK;
bool allocated;
const bool literally = literally_arg || is_literal_register(regname);
/*
* It is possible to get into an endless loop by having CTRL-R a in
* register a and then, in insert mode, doing CTRL-R a.
* If you hit CTRL-C, the loop will be broken here.
*/
os_breakcheck();
if (got_int) {
return FAIL;
}
// check for valid regname
if (regname != NUL && !valid_yank_reg(regname, false)) {
return FAIL;
}
char_u *arg;
if (regname == '.') { // Insert last inserted text.
retval = stuff_inserted(NUL, 1L, true);
} else if (get_spec_reg(regname, &arg, &allocated, true)) {
if (arg == NULL) {
return FAIL;
}
stuffescaped((const char *)arg, literally);
if (allocated) {
xfree(arg);
}
} else { // Name or number register.
yankreg_T *reg = get_yank_register(regname, YREG_PASTE);
if (reg->y_array == NULL) {
retval = FAIL;
} else {
for (size_t i = 0; i < reg->y_size; i++) {
if (regname == '-') {
AppendCharToRedobuff(Ctrl_R);
AppendCharToRedobuff(regname);
do_put(regname, NULL, BACKWARD, 1L, PUT_CURSEND);
} else {
stuffescaped((const char *)reg->y_array[i], literally);
}
// Insert a newline between lines and after last line if
// y_type is kMTLineWise.
if (reg->y_type == kMTLineWise || i < reg->y_size - 1) {
stuffcharReadbuff('\n');
}
}
}
}
return retval;
}
/// Stuff a string into the typeahead buffer, such that edit() will insert it
/// literally ("literally" true) or interpret is as typed characters.
static void stuffescaped(const char *arg, bool literally)
{
while (*arg != NUL) {
// Stuff a sequence of normal ASCII characters, that's fast. Also
// stuff K_SPECIAL to get the effect of a special key when "literally"
// is true.
const char *const start = arg;
while ((*arg >= ' ' && *arg < DEL) || ((uint8_t)(*arg) == K_SPECIAL
&& !literally)) {
arg++;
}
if (arg > start) {
stuffReadbuffLen(start, (arg - start));
}
// stuff a single special character
if (*arg != NUL) {
const int c = mb_cptr2char_adv((const char_u **)&arg);
if (literally && ((c < ' ' && c != TAB) || c == DEL)) {
stuffcharReadbuff(Ctrl_V);
}
stuffcharReadbuff(c);
}
}
}
/// If "regname" is a special register, return true and store a pointer to its
/// value in "argp".
///
/// @param allocated return: true when value was allocated
/// @param errmsg give error message when failing
///
/// @return true if "regname" is a special register,
bool get_spec_reg(int regname, char_u **argp, bool *allocated, bool errmsg)
{
size_t cnt;
*argp = NULL;
*allocated = false;
switch (regname) {
case '%': // file name
if (errmsg) {
check_fname(); // will give emsg if not set
}
*argp = curbuf->b_fname;
return true;
case '#': // alternate file name
*argp = getaltfname(errmsg); // may give emsg if not set
return true;
case '=': // result of expression
*argp = get_expr_line();
*allocated = true;
return true;
case ':': // last command line
if (last_cmdline == NULL && errmsg) {
emsg(_(e_nolastcmd));
}
*argp = last_cmdline;
return true;
case '/': // last search-pattern
if (last_search_pat() == NULL && errmsg) {
emsg(_(e_noprevre));
}
*argp = last_search_pat();
return true;
case '.': // last inserted text
*argp = get_last_insert_save();
*allocated = true;
if (*argp == NULL && errmsg) {
emsg(_(e_noinstext));
}
return true;
case Ctrl_F: // Filename under cursor
case Ctrl_P: // Path under cursor, expand via "path"
if (!errmsg) {
return false;
}
*argp = file_name_at_cursor(FNAME_MESS | FNAME_HYP | (regname == Ctrl_P ? FNAME_EXP : 0),
1L, NULL);
*allocated = true;
return true;
case Ctrl_W: // word under cursor
case Ctrl_A: // WORD (mnemonic All) under cursor
if (!errmsg) {
return false;
}
cnt = find_ident_under_cursor(argp, (regname == Ctrl_W
? (FIND_IDENT|FIND_STRING)
: FIND_STRING));
*argp = cnt ? vim_strnsave(*argp, cnt) : NULL;
*allocated = true;
return true;
case Ctrl_L: // Line under cursor
if (!errmsg) {
return false;
}
*argp = ml_get_buf(curwin->w_buffer, curwin->w_cursor.lnum, false);
return true;
case '_': // black hole: always empty
*argp = (char_u *)"";
return true;
}
return false;
}
/// Paste a yank register into the command line.
/// Only for non-special registers.
/// Used by CTRL-R in command-line mode.
/// insert_reg() can't be used here, because special characters from the
/// register contents will be interpreted as commands.
///
/// @param regname Register name.
/// @param literally_arg Insert text literally instead of "as typed".
/// @param remcr When true, don't add CR characters.
///
/// @returns FAIL for failure, OK otherwise
bool cmdline_paste_reg(int regname, bool literally_arg, bool remcr)
{
const bool literally = literally_arg || is_literal_register(regname);
yankreg_T *reg = get_yank_register(regname, YREG_PASTE);
if (reg->y_array == NULL) {
return FAIL;
}
for (size_t i = 0; i < reg->y_size; i++) {
cmdline_paste_str(reg->y_array[i], literally);
// Insert ^M between lines, unless `remcr` is true.
if (i < reg->y_size - 1 && !remcr) {
cmdline_paste_str((char_u *)"\r", literally);
}
/* Check for CTRL-C, in case someone tries to paste a few thousand
* lines and gets bored. */
os_breakcheck();
if (got_int) {
return FAIL;
}
}
return OK;
}
// Shift the delete registers: "9 is cleared, "8 becomes "9, etc.
static void shift_delete_registers(bool y_append)
{
free_register(&y_regs[9]); // free register "9
for (int n = 9; n > 1; n--) {
y_regs[n] = y_regs[n - 1];
}
if (!y_append) {
y_previous = &y_regs[1];
}
y_regs[1].y_array = NULL; // set register "1 to empty
}
/*
* Handle a delete operation.
*
* Return FAIL if undo failed, OK otherwise.
*/
int op_delete(oparg_T *oap)
{
int n;
linenr_T lnum;
char_u *ptr;
char_u *newp, *oldp;
struct block_def bd = { 0 };
linenr_T old_lcount = curbuf->b_ml.ml_line_count;
if (curbuf->b_ml.ml_flags & ML_EMPTY) { // nothing to do
return OK;
}
// Nothing to delete, return here. Do prepare undo, for op_change().
if (oap->empty) {
return u_save_cursor();
}
if (!MODIFIABLE(curbuf)) {
emsg(_(e_modifiable));
return FAIL;
}
mb_adjust_opend(oap);
/*
* Imitate the strange Vi behaviour: If the delete spans more than one
* line and motion_type == kMTCharWise and the result is a blank line, make the
* delete linewise. Don't do this for the change command or Visual mode.
*/
if (oap->motion_type == kMTCharWise
&& !oap->is_VIsual
&& oap->line_count > 1
&& oap->motion_force == NUL
&& oap->op_type == OP_DELETE) {
ptr = ml_get(oap->end.lnum) + oap->end.col;
if (*ptr != NUL) {
ptr += oap->inclusive;
}
ptr = skipwhite(ptr);
if (*ptr == NUL && inindent(0)) {
oap->motion_type = kMTLineWise;
}
}
/*
* Check for trying to delete (e.g. "D") in an empty line.
* Note: For the change operator it is ok.
*/
if (oap->motion_type != kMTLineWise
&& oap->line_count == 1
&& oap->op_type == OP_DELETE
&& *ml_get(oap->start.lnum) == NUL) {
// It's an error to operate on an empty region, when 'E' included in
// 'cpoptions' (Vi compatible).
if (virtual_op) {
// Virtual editing: Nothing gets deleted, but we set the '[ and ']
// marks as if it happened.
goto setmarks;
}
if (vim_strchr(p_cpo, CPO_EMPTYREGION) != NULL) {
beep_flush();
}
return OK;
}
/*
* Do a yank of whatever we're about to delete.
* If a yank register was specified, put the deleted text into that
* register. For the black hole register '_' don't yank anything.
*/
if (oap->regname != '_') {
yankreg_T *reg = NULL;
int did_yank = false;
if (oap->regname != 0) {
// yank without message
did_yank = op_yank(oap, false, true);
if (!did_yank) {
// op_yank failed, don't do anything
return OK;
}
}
/*
* Put deleted text into register 1 and shift number registers if the
* delete contains a line break, or when a regname has been specified.
*/
if (oap->regname != 0 || oap->motion_type == kMTLineWise
|| oap->line_count > 1 || oap->use_reg_one) {
shift_delete_registers(is_append_register(oap->regname));
reg = &y_regs[1];
op_yank_reg(oap, false, reg, false);
did_yank = true;
}
// Yank into small delete register when no named register specified
// and the delete is within one line.
if (oap->regname == 0 && oap->motion_type != kMTLineWise
&& oap->line_count == 1) {
reg = get_yank_register('-', YREG_YANK);
op_yank_reg(oap, false, reg, false);
did_yank = true;
}
if (did_yank || oap->regname == 0) {
if (reg == NULL) {
abort();
}
set_clipboard(oap->regname, reg);
do_autocmd_textyankpost(oap, reg);
}
}
/*
* block mode delete
*/
if (oap->motion_type == kMTBlockWise) {
if (u_save((linenr_T)(oap->start.lnum - 1),
(linenr_T)(oap->end.lnum + 1)) == FAIL) {
return FAIL;
}
for (lnum = curwin->w_cursor.lnum; lnum <= oap->end.lnum; lnum++) {
block_prep(oap, &bd, lnum, true);
if (bd.textlen == 0) { // nothing to delete
continue;
}
// Adjust cursor position for tab replaced by spaces and 'lbr'.
if (lnum == curwin->w_cursor.lnum) {
curwin->w_cursor.col = bd.textcol + bd.startspaces;
curwin->w_cursor.coladd = 0;
}
// n == number of chars deleted
// If we delete a TAB, it may be replaced by several characters.
// Thus the number of characters may increase!
n = bd.textlen - bd.startspaces - bd.endspaces;
oldp = ml_get(lnum);
newp = (char_u *)xmalloc(STRLEN(oldp) - (size_t)n + 1);
// copy up to deleted part
memmove(newp, oldp, (size_t)bd.textcol);
// insert spaces
memset(newp + bd.textcol, ' ', (size_t)bd.startspaces +
(size_t)bd.endspaces);
// copy the part after the deleted part
oldp += bd.textcol + bd.textlen;
STRMOVE(newp + bd.textcol + bd.startspaces + bd.endspaces, oldp);
// replace the line
ml_replace(lnum, newp, false);
extmark_splice_cols(curbuf, (int)lnum-1, bd.textcol,
bd.textlen, bd.startspaces+bd.endspaces,
kExtmarkUndo);
}
check_cursor_col();
changed_lines(curwin->w_cursor.lnum, curwin->w_cursor.col,
oap->end.lnum + 1, 0L, true);
oap->line_count = 0; // no lines deleted
} else if (oap->motion_type == kMTLineWise) {
if (oap->op_type == OP_CHANGE) {
// Delete the lines except the first one. Temporarily move the
// cursor to the next line. Save the current line number, if the
// last line is deleted it may be changed.
if (oap->line_count > 1) {
lnum = curwin->w_cursor.lnum;
curwin->w_cursor.lnum++;
del_lines(oap->line_count - 1, true);
curwin->w_cursor.lnum = lnum;
}
if (u_save_cursor() == FAIL) {
return FAIL;
}
if (curbuf->b_p_ai) { // don't delete indent
beginline(BL_WHITE); // cursor on first non-white
did_ai = true; // delete the indent when ESC hit
ai_col = curwin->w_cursor.col;
} else {
beginline(0); // cursor in column 0
}
int old_len = (int)STRLEN(ml_get(curwin->w_cursor.lnum));
truncate_line(false); // delete the rest of the line
extmark_splice_cols(curbuf,
(int)curwin->w_cursor.lnum-1, curwin->w_cursor.col,
old_len - curwin->w_cursor.col, 0, kExtmarkUndo);
// leave cursor past last char in line
if (oap->line_count > 1) {
u_clearline(); // "U" command not possible after "2cc"
}
} else {
del_lines(oap->line_count, true);
beginline(BL_WHITE | BL_FIX);
u_clearline(); // "U" command not possible after "dd"
}
} else {
if (virtual_op) {
int endcol = 0;
// For virtualedit: break the tabs that are partly included.
if (gchar_pos(&oap->start) == '\t') {
if (u_save_cursor() == FAIL) { // save first line for undo
return FAIL;
}
if (oap->line_count == 1) {
endcol = getviscol2(oap->end.col, oap->end.coladd);
}
coladvance_force(getviscol2(oap->start.col, oap->start.coladd));
oap->start = curwin->w_cursor;
if (oap->line_count == 1) {
coladvance(endcol);
oap->end.col = curwin->w_cursor.col;
oap->end.coladd = curwin->w_cursor.coladd;
curwin->w_cursor = oap->start;
}
}
// Break a tab only when it's included in the area.
if (gchar_pos(&oap->end) == '\t'
&& oap->end.coladd == 0
&& oap->inclusive) {
// save last line for undo
if (u_save((linenr_T)(oap->end.lnum - 1),
(linenr_T)(oap->end.lnum + 1)) == FAIL) {
return FAIL;
}
curwin->w_cursor = oap->end;
coladvance_force(getviscol2(oap->end.col, oap->end.coladd));
oap->end = curwin->w_cursor;
curwin->w_cursor = oap->start;
}
mb_adjust_opend(oap);
}
if (oap->line_count == 1) { // delete characters within one line
if (u_save_cursor() == FAIL) { // save line for undo
return FAIL;
}
// if 'cpoptions' contains '$', display '$' at end of change
if (vim_strchr(p_cpo, CPO_DOLLAR) != NULL
&& oap->op_type == OP_CHANGE
&& oap->end.lnum == curwin->w_cursor.lnum
&& !oap->is_VIsual) {
display_dollar(oap->end.col - !oap->inclusive);
}
n = oap->end.col - oap->start.col + 1 - !oap->inclusive;
if (virtual_op) {
// fix up things for virtualedit-delete:
// break the tabs which are going to get in our way
char_u *curline = get_cursor_line_ptr();
int len = (int)STRLEN(curline);
if (oap->end.coladd != 0
&& (int)oap->end.col >= len - 1
&& !(oap->start.coladd && (int)oap->end.col >= len - 1)) {
n++;
}
// Delete at least one char (e.g, when on a control char).
if (n == 0 && oap->start.coladd != oap->end.coladd) {
n = 1;
}
// When deleted a char in the line, reset coladd.
if (gchar_cursor() != NUL) {
curwin->w_cursor.coladd = 0;
}
}
(void)del_bytes((colnr_T)n, !virtual_op,
oap->op_type == OP_DELETE && !oap->is_VIsual);
} else {
// delete characters between lines
pos_T curpos;
// save deleted and changed lines for undo
if (u_save((linenr_T)(curwin->w_cursor.lnum - 1),
(linenr_T)(curwin->w_cursor.lnum + oap->line_count)) == FAIL) {
return FAIL;
}
curbuf_splice_pending++;
pos_T startpos = curwin->w_cursor; // start position for delete
bcount_t deleted_bytes = get_region_bytecount(curbuf, startpos.lnum, oap->end.lnum,
startpos.col,
oap->end.col) + oap->inclusive;
truncate_line(true); // delete from cursor to end of line
curpos = curwin->w_cursor; // remember curwin->w_cursor
curwin->w_cursor.lnum++;
del_lines(oap->line_count - 2, false);
// delete from start of line until op_end
n = (oap->end.col + 1 - !oap->inclusive);
curwin->w_cursor.col = 0;
(void)del_bytes((colnr_T)n, !virtual_op,
oap->op_type == OP_DELETE && !oap->is_VIsual);
curwin->w_cursor = curpos; // restore curwin->w_cursor
(void)do_join(2, false, false, false, false);
curbuf_splice_pending--;
extmark_splice(curbuf, (int)startpos.lnum-1, startpos.col,
(int)oap->line_count-1, n, deleted_bytes,
0, 0, 0, kExtmarkUndo);
}
if (oap->op_type == OP_DELETE) {
auto_format(false, true);
}
}
msgmore(curbuf->b_ml.ml_line_count - old_lcount);
setmarks:
if (oap->motion_type == kMTBlockWise) {
curbuf->b_op_end.lnum = oap->end.lnum;
curbuf->b_op_end.col = oap->start.col;
} else {
curbuf->b_op_end = oap->start;
}
curbuf->b_op_start = oap->start;
return OK;
}
/*
* Adjust end of operating area for ending on a multi-byte character.
* Used for deletion.
*/
static void mb_adjust_opend(oparg_T *oap)
{
char_u *p;
if (oap->inclusive) {
p = ml_get(oap->end.lnum);
oap->end.col += mb_tail_off(p, p + oap->end.col);
}
}
/*
* Put character 'c' at position 'lp'
*/
static inline void pbyte(pos_T lp, int c)
{
assert(c <= UCHAR_MAX);
*(ml_get_buf(curbuf, lp.lnum, true) + lp.col) = (char_u)c;
if (!curbuf_splice_pending) {
extmark_splice_cols(curbuf, (int)lp.lnum-1, lp.col, 1, 1, kExtmarkUndo);
}
}
// Replace the character under the cursor with "c".
// This takes care of multi-byte characters.
static void replace_character(int c)
{
const int n = State;
State = REPLACE;
ins_char(c);
State = n;
// Backup to the replaced character.
dec_cursor();
}
/*
* Replace a whole area with one character.
*/
int op_replace(oparg_T *oap, int c)
{
int n, numc;
int num_chars;
char_u *newp, *oldp;
colnr_T oldlen;
struct block_def bd;
char_u *after_p = NULL;
int had_ctrl_v_cr = false;
if ((curbuf->b_ml.ml_flags & ML_EMPTY) || oap->empty) {
return OK; // nothing to do
}
if (c == REPLACE_CR_NCHAR) {
had_ctrl_v_cr = true;
c = CAR;
} else if (c == REPLACE_NL_NCHAR) {
had_ctrl_v_cr = true;
c = NL;
}
mb_adjust_opend(oap);
if (u_save((linenr_T)(oap->start.lnum - 1),
(linenr_T)(oap->end.lnum + 1)) == FAIL) {
return FAIL;
}
/*
* block mode replace
*/
if (oap->motion_type == kMTBlockWise) {
bd.is_MAX = (curwin->w_curswant == MAXCOL);
for (; curwin->w_cursor.lnum <= oap->end.lnum; curwin->w_cursor.lnum++) {
curwin->w_cursor.col = 0; // make sure cursor position is valid
block_prep(oap, &bd, curwin->w_cursor.lnum, true);
if (bd.textlen == 0 && (!virtual_op || bd.is_MAX)) {
continue; // nothing to replace
}
// n == number of extra chars required
// If we split a TAB, it may be replaced by several characters.
// Thus the number of characters may increase!
// If the range starts in virtual space, count the initial
// coladd offset as part of "startspaces"
if (virtual_op && bd.is_short && *bd.textstart == NUL) {
pos_T vpos;
vpos.lnum = curwin->w_cursor.lnum;
getvpos(&vpos, oap->start_vcol);
bd.startspaces += vpos.coladd;
n = bd.startspaces;
} else {
// allow for pre spaces
n = (bd.startspaces ? bd.start_char_vcols - 1 : 0);
}
// allow for post spp
n += (bd.endspaces
&& !bd.is_oneChar
&& bd.end_char_vcols > 0) ? bd.end_char_vcols - 1 : 0;
// Figure out how many characters to replace.
numc = oap->end_vcol - oap->start_vcol + 1;
if (bd.is_short && (!virtual_op || bd.is_MAX)) {
numc -= (oap->end_vcol - bd.end_vcol) + 1;
}
// A double-wide character can be replaced only up to half the
// times.
if (utf_char2cells(c) > 1) {
if ((numc & 1) && !bd.is_short) {
++bd.endspaces;
++n;
}
numc = numc / 2;
}
// Compute bytes needed, move character count to num_chars.
num_chars = numc;
numc *= utf_char2len(c);
oldp = get_cursor_line_ptr();
oldlen = (int)STRLEN(oldp);
size_t newp_size = (size_t)bd.textcol + (size_t)bd.startspaces;
if (had_ctrl_v_cr || (c != '\r' && c != '\n')) {
newp_size += (size_t)numc;
if (!bd.is_short) {
newp_size += (size_t)(bd.endspaces + oldlen
- bd.textcol - bd.textlen);
}
}
newp = xmallocz(newp_size);
// copy up to deleted part
memmove(newp, oldp, (size_t)bd.textcol);
oldp += bd.textcol + bd.textlen;
// insert pre-spaces
memset(newp + bd.textcol, ' ', (size_t)bd.startspaces);
// insert replacement chars CHECK FOR ALLOCATED SPACE
// REPLACE_CR_NCHAR/REPLACE_NL_NCHAR is used for entering CR literally.
size_t after_p_len = 0;
int col = oldlen - bd.textcol - bd.textlen + 1;
assert(col >= 0);
int newrows = 0, newcols = 0;
if (had_ctrl_v_cr || (c != '\r' && c != '\n')) {
// strlen(newp) at this point
int newp_len = bd.textcol + bd.startspaces;
while (--num_chars >= 0) {
newp_len += utf_char2bytes(c, newp + newp_len);
}
if (!bd.is_short) {
// insert post-spaces
memset(newp + newp_len, ' ', (size_t)bd.endspaces);
newp_len += bd.endspaces;
// copy the part after the changed part
memmove(newp + newp_len, oldp, (size_t)col);
}
newcols = newp_len - bd.textcol;
} else {
// Replacing with \r or \n means splitting the line.
after_p_len = (size_t)col;
after_p = (char_u *)xmalloc(after_p_len);
memmove(after_p, oldp, after_p_len);
newrows = 1;
}
// replace the line
ml_replace(curwin->w_cursor.lnum, newp, false);
curbuf_splice_pending++;
linenr_T baselnum = curwin->w_cursor.lnum;
if (after_p != NULL) {
ml_append(curwin->w_cursor.lnum++, after_p, (int)after_p_len, false);
appended_lines_mark(curwin->w_cursor.lnum, 1L);
oap->end.lnum++;
xfree(after_p);
}
curbuf_splice_pending--;
extmark_splice(curbuf, (int)baselnum-1, bd.textcol,
0, bd.textlen, bd.textlen,
newrows, newcols, newrows+newcols, kExtmarkUndo);
}
} else {
// Characterwise or linewise motion replace.
if (oap->motion_type == kMTLineWise) {
oap->start.col = 0;
curwin->w_cursor.col = 0;
oap->end.col = (colnr_T)STRLEN(ml_get(oap->end.lnum));
if (oap->end.col) {
--oap->end.col;
}
} else if (!oap->inclusive) {
dec(&(oap->end));
}
// TODO(bfredl): we could batch all the splicing
// done on the same line, at least
while (ltoreq(curwin->w_cursor, oap->end)) {
n = gchar_cursor();
if (n != NUL) {
if (utf_char2len(c) > 1 || utf_char2len(n) > 1) {
// This is slow, but it handles replacing a single-byte
// with a multi-byte and the other way around.
if (curwin->w_cursor.lnum == oap->end.lnum) {
oap->end.col += utf_char2len(c) - utf_char2len(n);
}
replace_character(c);
} else {
if (n == TAB) {
int end_vcol = 0;
if (curwin->w_cursor.lnum == oap->end.lnum) {
// oap->end has to be recalculated when
// the tab breaks
end_vcol = getviscol2(oap->end.col,
oap->end.coladd);
}
coladvance_force(getviscol());
if (curwin->w_cursor.lnum == oap->end.lnum) {
getvpos(&oap->end, end_vcol);
}
}
pbyte(curwin->w_cursor, c);
}
} else if (virtual_op && curwin->w_cursor.lnum == oap->end.lnum) {
int virtcols = oap->end.coladd;
if (curwin->w_cursor.lnum == oap->start.lnum
&& oap->start.col == oap->end.col && oap->start.coladd) {
virtcols -= oap->start.coladd;
}
// oap->end has been trimmed so it's effectively inclusive;
// as a result an extra +1 must be counted so we don't
// trample the NUL byte.
coladvance_force(getviscol2(oap->end.col, oap->end.coladd) + 1);
curwin->w_cursor.col -= (virtcols + 1);
for (; virtcols >= 0; virtcols--) {
if (utf_char2len(c) > 1) {
replace_character(c);
} else {
pbyte(curwin->w_cursor, c);
}
if (inc(&curwin->w_cursor) == -1) {
break;
}
}
}
// Advance to next character, stop at the end of the file.
if (inc_cursor() == -1) {
break;
}
}
}
curwin->w_cursor = oap->start;
check_cursor();
changed_lines(oap->start.lnum, oap->start.col, oap->end.lnum + 1, 0L, true);
// Set "'[" and "']" marks.
curbuf->b_op_start = oap->start;
curbuf->b_op_end = oap->end;
return OK;
}
/*
* Handle the (non-standard vi) tilde operator. Also for "gu", "gU" and "g?".
*/
void op_tilde(oparg_T *oap)
{
pos_T pos;
struct block_def bd;
int did_change = FALSE;
if (u_save((linenr_T)(oap->start.lnum - 1),
(linenr_T)(oap->end.lnum + 1)) == FAIL) {
return;
}
pos = oap->start;
if (oap->motion_type == kMTBlockWise) { // Visual block mode
for (; pos.lnum <= oap->end.lnum; pos.lnum++) {
int one_change;
block_prep(oap, &bd, pos.lnum, false);
pos.col = bd.textcol;
one_change = swapchars(oap->op_type, &pos, bd.textlen);
did_change |= one_change;
}
if (did_change) {
changed_lines(oap->start.lnum, 0, oap->end.lnum + 1, 0L, true);
}
} else { // not block mode
if (oap->motion_type == kMTLineWise) {
oap->start.col = 0;
pos.col = 0;
oap->end.col = (colnr_T)STRLEN(ml_get(oap->end.lnum));
if (oap->end.col) {
--oap->end.col;
}
} else if (!oap->inclusive) {
dec(&(oap->end));
}
if (pos.lnum == oap->end.lnum) {
did_change = swapchars(oap->op_type, &pos,
oap->end.col - pos.col + 1);
} else {
for (;; ) {
did_change |= swapchars(oap->op_type, &pos,
pos.lnum == oap->end.lnum ? oap->end.col + 1 :
(int)STRLEN(ml_get_pos(&pos)));
if (ltoreq(oap->end, pos) || inc(&pos) == -1) {
break;
}
}
}
if (did_change) {
changed_lines(oap->start.lnum, oap->start.col, oap->end.lnum + 1,
0L, true);
}
}
if (!did_change && oap->is_VIsual) {
// No change: need to remove the Visual selection
redraw_curbuf_later(INVERTED);
}
/*
* Set '[ and '] marks.
*/
curbuf->b_op_start = oap->start;
curbuf->b_op_end = oap->end;
if (oap->line_count > p_report) {
smsg(NGETTEXT("%" PRId64 " line changed",
"%" PRId64 " lines changed", oap->line_count),
(int64_t)oap->line_count);
}
}
/*
* Invoke swapchar() on "length" bytes at position "pos".
* "pos" is advanced to just after the changed characters.
* "length" is rounded up to include the whole last multi-byte character.
* Also works correctly when the number of bytes changes.
* Returns TRUE if some character was changed.
*/
static int swapchars(int op_type, pos_T *pos, int length)
FUNC_ATTR_NONNULL_ALL
{
int did_change = 0;
for (int todo = length; todo > 0; todo--) {
const int len = utfc_ptr2len(ml_get_pos(pos));
// we're counting bytes, not characters
if (len > 0) {
todo -= len - 1;
}
did_change |= swapchar(op_type, pos);
if (inc(pos) == -1) { // at end of file
break;
}
}
return did_change;
}
// If op_type == OP_UPPER: make uppercase,
// if op_type == OP_LOWER: make lowercase,
// if op_type == OP_ROT13: do rot13 encoding,
// else swap case of character at 'pos'
// returns true when something actually changed.
bool swapchar(int op_type, pos_T *pos)
FUNC_ATTR_NONNULL_ARG(2)
{
const int c = gchar_pos(pos);
// Only do rot13 encoding for ASCII characters.
if (c >= 0x80 && op_type == OP_ROT13) {
return false;
}
if (op_type == OP_UPPER && c == 0xdf) {
pos_T sp = curwin->w_cursor;
// Special handling of German sharp s: change to "SS".
curwin->w_cursor = *pos;
del_char(false);
ins_char('S');
ins_char('S');
curwin->w_cursor = sp;
inc(pos);
}
int nc = c;
if (mb_islower(c)) {
if (op_type == OP_ROT13) {
nc = ROT13(c, 'a');
} else if (op_type != OP_LOWER) {
nc = mb_toupper(c);
}
} else if (mb_isupper(c)) {
if (op_type == OP_ROT13) {
nc = ROT13(c, 'A');
} else if (op_type != OP_UPPER) {
nc = mb_tolower(c);
}
}
if (nc != c) {
if (c >= 0x80 || nc >= 0x80) {
pos_T sp = curwin->w_cursor;
curwin->w_cursor = *pos;
// don't use del_char(), it also removes composing chars
del_bytes(utf_ptr2len(get_cursor_pos_ptr()), false, false);
ins_char(nc);
curwin->w_cursor = sp;
} else {
pbyte(*pos, nc);
}
return true;
}
return false;
}
/*
* op_insert - Insert and append operators for Visual mode.
*/
void op_insert(oparg_T *oap, long count1)
{
long ins_len, pre_textlen = 0;
char_u *firstline, *ins_text;
colnr_T ind_pre = 0;
struct block_def bd;
int i;
pos_T t1;
// edit() changes this - record it for OP_APPEND
bd.is_MAX = (curwin->w_curswant == MAXCOL);
// vis block is still marked. Get rid of it now.
curwin->w_cursor.lnum = oap->start.lnum;
update_screen(INVERTED);
if (oap->motion_type == kMTBlockWise) {
// When 'virtualedit' is used, need to insert the extra spaces before
// doing block_prep(). When only "block" is used, virtual edit is
// already disabled, but still need it when calling
// coladvance_force().
if (curwin->w_cursor.coladd > 0) {
unsigned old_ve_flags = ve_flags;
ve_flags = VE_ALL;
if (u_save_cursor() == FAIL) {
return;
}
coladvance_force(oap->op_type == OP_APPEND
? oap->end_vcol + 1 : getviscol());
if (oap->op_type == OP_APPEND) {
--curwin->w_cursor.col;
}
ve_flags = old_ve_flags;
}
// Get the info about the block before entering the text
block_prep(oap, &bd, oap->start.lnum, true);
// Get indent information
ind_pre = (colnr_T)getwhitecols_curline();
firstline = ml_get(oap->start.lnum) + bd.textcol;
if (oap->op_type == OP_APPEND) {
firstline += bd.textlen;
}
pre_textlen = (long)STRLEN(firstline);
}
if (oap->op_type == OP_APPEND) {
if (oap->motion_type == kMTBlockWise
&& curwin->w_cursor.coladd == 0) {
// Move the cursor to the character right of the block.
curwin->w_set_curswant = TRUE;
while (*get_cursor_pos_ptr() != NUL
&& (curwin->w_cursor.col < bd.textcol + bd.textlen)) {
++curwin->w_cursor.col;
}
if (bd.is_short && !bd.is_MAX) {
// First line was too short, make it longer and adjust the
// values in "bd".
if (u_save_cursor() == FAIL) {
return;
}
for (i = 0; i < bd.endspaces; i++) {
ins_char(' ');
}
bd.textlen += bd.endspaces;
}
} else {
curwin->w_cursor = oap->end;
check_cursor_col();
// Works just like an 'i'nsert on the next character.
if (!LINEEMPTY(curwin->w_cursor.lnum)
&& oap->start_vcol != oap->end_vcol) {
inc_cursor();
}
}
}
t1 = oap->start;
(void)edit(NUL, false, (linenr_T)count1);
// When a tab was inserted, and the characters in front of the tab
// have been converted to a tab as well, the column of the cursor
// might have actually been reduced, so need to adjust here.
if (t1.lnum == curbuf->b_op_start_orig.lnum
&& lt(curbuf->b_op_start_orig, t1)) {
oap->start = curbuf->b_op_start_orig;
}
// If user has moved off this line, we don't know what to do, so do
// nothing.
// Also don't repeat the insert when Insert mode ended with CTRL-C.
if (curwin->w_cursor.lnum != oap->start.lnum || got_int) {
return;
}
if (oap->motion_type == kMTBlockWise) {
struct block_def bd2;
bool did_indent = false;
// if indent kicked in, the firstline might have changed
// but only do that, if the indent actually increased
const colnr_T ind_post = (colnr_T)getwhitecols_curline();
if (curbuf->b_op_start.col > ind_pre && ind_post > ind_pre) {
bd.textcol += ind_post - ind_pre;
bd.start_vcol += ind_post - ind_pre;
did_indent = true;
}
// The user may have moved the cursor before inserting something, try
// to adjust the block for that. But only do it, if the difference
// does not come from indent kicking in.
if (oap->start.lnum == curbuf->b_op_start_orig.lnum
&& !bd.is_MAX
&& !did_indent) {
if (oap->op_type == OP_INSERT
&& oap->start.col + oap->start.coladd
!= curbuf->b_op_start_orig.col + curbuf->b_op_start_orig.coladd) {
int t = getviscol2(curbuf->b_op_start_orig.col,
curbuf->b_op_start_orig.coladd);
oap->start.col = curbuf->b_op_start_orig.col;
pre_textlen -= t - oap->start_vcol;
oap->start_vcol = t;
} else if (oap->op_type == OP_APPEND
&& oap->end.col + oap->end.coladd
>= curbuf->b_op_start_orig.col
+ curbuf->b_op_start_orig.coladd) {
int t = getviscol2(curbuf->b_op_start_orig.col,
curbuf->b_op_start_orig.coladd);
oap->start.col = curbuf->b_op_start_orig.col;
// reset pre_textlen to the value of OP_INSERT
pre_textlen += bd.textlen;
pre_textlen -= t - oap->start_vcol;
oap->start_vcol = t;
oap->op_type = OP_INSERT;
}
}
/*
* Spaces and tabs in the indent may have changed to other spaces and
* tabs. Get the starting column again and correct the length.
* Don't do this when "$" used, end-of-line will have changed.
*/
block_prep(oap, &bd2, oap->start.lnum, true);
if (!bd.is_MAX || bd2.textlen < bd.textlen) {
if (oap->op_type == OP_APPEND) {
pre_textlen += bd2.textlen - bd.textlen;
if (bd2.endspaces) {
--bd2.textlen;
}
}
bd.textcol = bd2.textcol;
bd.textlen = bd2.textlen;
}
/*
* Subsequent calls to ml_get() flush the firstline data - take a
* copy of the required string.
*/
firstline = ml_get(oap->start.lnum);
const size_t len = STRLEN(firstline);
colnr_T add = bd.textcol;
if (oap->op_type == OP_APPEND) {
add += bd.textlen;
}
if ((size_t)add > len) {
firstline += len; // short line, point to the NUL
} else {
firstline += add;
}
ins_len = (long)STRLEN(firstline) - pre_textlen;
if (pre_textlen >= 0 && ins_len > 0) {
ins_text = vim_strnsave(firstline, (size_t)ins_len);
// block handled here
if (u_save(oap->start.lnum, (linenr_T)(oap->end.lnum + 1)) == OK) {
block_insert(oap, ins_text, (oap->op_type == OP_INSERT), &bd);
}
curwin->w_cursor.col = oap->start.col;
check_cursor();
xfree(ins_text);
}
}
}
/*
* op_change - handle a change operation
*
* return TRUE if edit() returns because of a CTRL-O command
*/
int op_change(oparg_T *oap)
{
colnr_T l;
int retval;
long offset;
linenr_T linenr;
long ins_len;
long pre_textlen = 0;
long pre_indent = 0;
char_u *newp;
char_u *firstline;
char_u *ins_text;
char_u *oldp;
struct block_def bd;
l = oap->start.col;
if (oap->motion_type == kMTLineWise) {
l = 0;
if (!p_paste && curbuf->b_p_si
&& !curbuf->b_p_cin) {
can_si = true; // It's like opening a new line, do si
}
}
// First delete the text in the region. In an empty buffer only need to
// save for undo
if (curbuf->b_ml.ml_flags & ML_EMPTY) {
if (u_save_cursor() == FAIL) {
return FALSE;
}
} else if (op_delete(oap) == FAIL) {
return FALSE;
}
if ((l > curwin->w_cursor.col) && !LINEEMPTY(curwin->w_cursor.lnum)
&& !virtual_op) {
inc_cursor();
}
// check for still on same line (<CR> in inserted text meaningless)
// skip blank lines too
if (oap->motion_type == kMTBlockWise) {
// Add spaces before getting the current line length.
if (virtual_op && (curwin->w_cursor.coladd > 0
|| gchar_cursor() == NUL)) {
coladvance_force(getviscol());
}
firstline = ml_get(oap->start.lnum);
pre_textlen = (long)STRLEN(firstline);
pre_indent = (long)getwhitecols(firstline);
bd.textcol = curwin->w_cursor.col;
}
if (oap->motion_type == kMTLineWise) {
fix_indent();
}
retval = edit(NUL, FALSE, (linenr_T)1);
/*
* In Visual block mode, handle copying the new text to all lines of the
* block.
* Don't repeat the insert when Insert mode ended with CTRL-C.
*/
if (oap->motion_type == kMTBlockWise
&& oap->start.lnum != oap->end.lnum && !got_int) {
// Auto-indenting may have changed the indent. If the cursor was past
// the indent, exclude that indent change from the inserted text.
firstline = ml_get(oap->start.lnum);
if (bd.textcol > (colnr_T)pre_indent) {
long new_indent = (long)getwhitecols(firstline);
pre_textlen += new_indent - pre_indent;
bd.textcol += (colnr_T)(new_indent - pre_indent);
}
ins_len = (long)STRLEN(firstline) - pre_textlen;
if (ins_len > 0) {
// Subsequent calls to ml_get() flush the firstline data - take a
// copy of the inserted text.
ins_text = (char_u *)xmalloc((size_t)(ins_len + 1));
STRLCPY(ins_text, firstline + bd.textcol, ins_len + 1);
for (linenr = oap->start.lnum + 1; linenr <= oap->end.lnum;
linenr++) {
block_prep(oap, &bd, linenr, true);
if (!bd.is_short || virtual_op) {
pos_T vpos;
// If the block starts in virtual space, count the
// initial coladd offset as part of "startspaces"
if (bd.is_short) {
vpos.lnum = linenr;
(void)getvpos(&vpos, oap->start_vcol);
} else {
vpos.coladd = 0;
}
oldp = ml_get(linenr);
newp = xmalloc(STRLEN(oldp) + (size_t)vpos.coladd
+ (size_t)ins_len + 1);
// copy up to block start
memmove(newp, oldp, (size_t)bd.textcol);
offset = bd.textcol;
memset(newp + offset, ' ', (size_t)vpos.coladd);
offset += vpos.coladd;
memmove(newp + offset, ins_text, (size_t)ins_len);
offset += ins_len;
oldp += bd.textcol;
STRMOVE(newp + offset, oldp);
ml_replace(linenr, newp, false);
extmark_splice_cols(curbuf, (int)linenr-1, bd.textcol,
0, vpos.coladd+(int)ins_len, kExtmarkUndo);
}
}
check_cursor();
changed_lines(oap->start.lnum + 1, 0, oap->end.lnum + 1, 0L, true);
xfree(ins_text);
}
}
auto_format(false, true);
return retval;
}
/*
* set all the yank registers to empty (called from main())
*/
void init_yank(void)
{
memset(&(y_regs[0]), 0, sizeof(y_regs));
}
#if defined(EXITFREE)
void clear_registers(void)
{
int i;
for (i = 0; i < NUM_REGISTERS; i++) {
free_register(&y_regs[i]);
}
}
#endif
/// Free contents of yankreg `reg`.
/// Called for normal freeing and in case of error.
/// `reg` must not be NULL (but `reg->y_array` might be)
void free_register(yankreg_T *reg)
FUNC_ATTR_NONNULL_ALL
{
set_yreg_additional_data(reg, NULL);
if (reg->y_array != NULL) {
for (size_t i = reg->y_size; i-- > 0;) { // from y_size - 1 to 0 included
xfree(reg->y_array[i]);
}
XFREE_CLEAR(reg->y_array);
}
}
/// Yanks the text between "oap->start" and "oap->end" into a yank register.
/// If we are to append (uppercase register), we first yank into a new yank
/// register and then concatenate the old and the new one.
///
/// @param oap operator arguments
/// @param message show message when more than `&report` lines are yanked.
/// @param deleting whether the function was called from a delete operation.
/// @returns whether the operation register was writable.
bool op_yank(oparg_T *oap, bool message, int deleting)
FUNC_ATTR_NONNULL_ALL
{
// check for read-only register
if (oap->regname != 0 && !valid_yank_reg(oap->regname, true)) {
beep_flush();
return false;
}
if (oap->regname == '_') {
return true; // black hole: nothing to do
}
yankreg_T *reg = get_yank_register(oap->regname, YREG_YANK);
op_yank_reg(oap, message, reg, is_append_register(oap->regname));
// op_delete will set_clipboard and do_autocmd
if (!deleting) {
set_clipboard(oap->regname, reg);
do_autocmd_textyankpost(oap, reg);
}
return true;
}
static void op_yank_reg(oparg_T *oap, bool message, yankreg_T *reg, bool append)
{
yankreg_T newreg; // new yank register when appending
char_u **new_ptr;
linenr_T lnum; // current line number
size_t j;
MotionType yank_type = oap->motion_type;
size_t yanklines = (size_t)oap->line_count;
linenr_T yankendlnum = oap->end.lnum;
char_u *p;
char_u *pnew;
struct block_def bd;
yankreg_T *curr = reg; // copy of current register
// append to existing contents
if (append && reg->y_array != NULL) {
reg = &newreg;
} else {
free_register(reg); // free previously yanked lines
}
// If the cursor was in column 1 before and after the movement, and the
// operator is not inclusive, the yank is always linewise.
if (oap->motion_type == kMTCharWise
&& oap->start.col == 0
&& !oap->inclusive
&& (!oap->is_VIsual || *p_sel == 'o')
&& oap->end.col == 0
&& yanklines > 1) {
yank_type = kMTLineWise;
yankendlnum--;
yanklines--;
}
reg->y_size = yanklines;
reg->y_type = yank_type; // set the yank register type
reg->y_width = 0;
reg->y_array = xcalloc(yanklines, sizeof(char_u *));
reg->additional_data = NULL;
reg->timestamp = os_time();
size_t y_idx = 0; // index in y_array[]
lnum = oap->start.lnum;
if (yank_type == kMTBlockWise) {
// Visual block mode
reg->y_width = oap->end_vcol - oap->start_vcol;
if (curwin->w_curswant == MAXCOL && reg->y_width > 0) {
reg->y_width--;
}
}
for (; lnum <= yankendlnum; lnum++, y_idx++) {
switch (reg->y_type) {
case kMTBlockWise:
block_prep(oap, &bd, lnum, false);
yank_copy_line(reg, &bd, y_idx, oap->excl_tr_ws);
break;
case kMTLineWise:
reg->y_array[y_idx] = vim_strsave(ml_get(lnum));
break;
case kMTCharWise: {
colnr_T startcol = 0, endcol = MAXCOL;
int is_oneChar = false;
colnr_T cs, ce;
p = ml_get(lnum);
bd.startspaces = 0;
bd.endspaces = 0;
if (lnum == oap->start.lnum) {
startcol = oap->start.col;
if (virtual_op) {
getvcol(curwin, &oap->start, &cs, NULL, &ce);
if (ce != cs && oap->start.coladd > 0) {
/* Part of a tab selected -- but don't
* double-count it. */
bd.startspaces = (ce - cs + 1)
- oap->start.coladd;
startcol++;
}
}
}
if (lnum == oap->end.lnum) {
endcol = oap->end.col;
if (virtual_op) {
getvcol(curwin, &oap->end, &cs, NULL, &ce);
if (p[endcol] == NUL || (cs + oap->end.coladd < ce
// Don't add space for double-wide
// char; endcol will be on last byte
// of multi-byte char.
&& utf_head_off(p, p + endcol) == 0)) {
if (oap->start.lnum == oap->end.lnum
&& oap->start.col == oap->end.col) {
// Special case: inside a single char
is_oneChar = true;
bd.startspaces = oap->end.coladd
- oap->start.coladd + oap->inclusive;
endcol = startcol;
} else {
bd.endspaces = oap->end.coladd
+ oap->inclusive;
endcol -= oap->inclusive;
}
}
}
}
if (endcol == MAXCOL) {
endcol = (colnr_T)STRLEN(p);
}
if (startcol > endcol
|| is_oneChar) {
bd.textlen = 0;
} else {
bd.textlen = endcol - startcol + oap->inclusive;
}
bd.textstart = p + startcol;
yank_copy_line(reg, &bd, y_idx, false);
break;
}
// NOTREACHED
case kMTUnknown:
abort();
}
}
if (curr != reg) { // append the new block to the old block
new_ptr = xmalloc(sizeof(char_u *) * (curr->y_size + reg->y_size));
for (j = 0; j < curr->y_size; ++j) {
new_ptr[j] = curr->y_array[j];
}
xfree(curr->y_array);
curr->y_array = new_ptr;
if (yank_type == kMTLineWise) {
// kMTLineWise overrides kMTCharWise and kMTBlockWise
curr->y_type = kMTLineWise;
}
// Concatenate the last line of the old block with the first line of
// the new block, unless being Vi compatible.
if (curr->y_type == kMTCharWise
&& vim_strchr(p_cpo, CPO_REGAPPEND) == NULL) {
pnew = xmalloc(STRLEN(curr->y_array[curr->y_size - 1])
+ STRLEN(reg->y_array[0]) + 1);
STRCPY(pnew, curr->y_array[--j]);
STRCAT(pnew, reg->y_array[0]);
xfree(curr->y_array[j]);
xfree(reg->y_array[0]);
curr->y_array[j++] = pnew;
y_idx = 1;
} else {
y_idx = 0;
}
while (y_idx < reg->y_size) {
curr->y_array[j++] = reg->y_array[y_idx++];
}
curr->y_size = j;
xfree(reg->y_array);
}
if (curwin->w_p_rnu) {
redraw_later(curwin, SOME_VALID); // cursor moved to start
}
if (message) { // Display message about yank?
if (yank_type == kMTCharWise && yanklines == 1) {
yanklines = 0;
}
// Some versions of Vi use ">=" here, some don't...
if (yanklines > (size_t)p_report) {
char namebuf[100];
if (oap->regname == NUL) {
*namebuf = NUL;
} else {
vim_snprintf(namebuf, sizeof(namebuf), _(" into \"%c"), oap->regname);
}
// redisplay now, so message is not deleted
update_topline_redraw();
if (yank_type == kMTBlockWise) {
smsg(NGETTEXT("block of %" PRId64 " line yanked%s",
"block of %" PRId64 " lines yanked%s", yanklines),
(int64_t)yanklines, namebuf);
} else {
smsg(NGETTEXT("%" PRId64 " line yanked%s",
"%" PRId64 " lines yanked%s", yanklines),
(int64_t)yanklines, namebuf);
}
}
}
/*
* Set "'[" and "']" marks.
*/
curbuf->b_op_start = oap->start;
curbuf->b_op_end = oap->end;
if (yank_type == kMTLineWise) {
curbuf->b_op_start.col = 0;
curbuf->b_op_end.col = MAXCOL;
}
return;
}
// Copy a block range into a register.
// If "exclude_trailing_space" is set, do not copy trailing whitespaces.
static void yank_copy_line(yankreg_T *reg, struct block_def *bd, size_t y_idx,
bool exclude_trailing_space)
FUNC_ATTR_NONNULL_ALL
{
if (exclude_trailing_space) {
bd->endspaces = 0;
}
int size = bd->startspaces + bd->endspaces + bd->textlen;
assert(size >= 0);
char_u *pnew = xmallocz((size_t)size);
reg->y_array[y_idx] = pnew;
memset(pnew, ' ', (size_t)bd->startspaces);
pnew += bd->startspaces;
memmove(pnew, bd->textstart, (size_t)bd->textlen);
pnew += bd->textlen;
memset(pnew, ' ', (size_t)bd->endspaces);
pnew += bd->endspaces;
if (exclude_trailing_space) {
int s = bd->textlen + bd->endspaces;
while (ascii_iswhite(*(bd->textstart + s - 1)) && s > 0) {
s = s - utf_head_off(bd->textstart, bd->textstart + s - 1) - 1;
pnew--;
}
}
*pnew = NUL;
}
/// Execute autocommands for TextYankPost.
///
/// @param oap Operator arguments.
/// @param reg The yank register used.
static void do_autocmd_textyankpost(oparg_T *oap, yankreg_T *reg)
FUNC_ATTR_NONNULL_ALL
{
static bool recursive = false;
if (recursive || !has_event(EVENT_TEXTYANKPOST)) {
// No autocommand was defined, or we yanked from this autocommand.
return;
}
recursive = true;
save_v_event_T save_v_event;
// Set the v:event dictionary with information about the yank.
dict_T *dict = get_v_event(&save_v_event);
// The yanked text contents.
list_T *const list = tv_list_alloc((ptrdiff_t)reg->y_size);
for (size_t i = 0; i < reg->y_size; i++) {
tv_list_append_string(list, (const char *)reg->y_array[i], -1);
}
tv_list_set_lock(list, VAR_FIXED);
(void)tv_dict_add_list(dict, S_LEN("regcontents"), list);
// Register type.
char buf[NUMBUFLEN+2];
format_reg_type(reg->y_type, reg->y_width, buf, ARRAY_SIZE(buf));
(void)tv_dict_add_str(dict, S_LEN("regtype"), buf);
// Name of requested register, or empty string for unnamed operation.
buf[0] = (char)oap->regname;
buf[1] = NUL;
(void)tv_dict_add_str(dict, S_LEN("regname"), buf);
// Motion type: inclusive or exclusive.
tv_dict_add_bool(dict, S_LEN("inclusive"),
oap->inclusive ? kBoolVarTrue : kBoolVarFalse);
// Kind of operation: yank, delete, change).
buf[0] = (char)get_op_char(oap->op_type);
buf[1] = NUL;
(void)tv_dict_add_str(dict, S_LEN("operator"), buf);
// Selection type: visual or not.
(void)tv_dict_add_bool(dict, S_LEN("visual"),
oap->is_VIsual ? kBoolVarTrue : kBoolVarFalse);
tv_dict_set_keys_readonly(dict);
textlock++;
apply_autocmds(EVENT_TEXTYANKPOST, NULL, NULL, false, curbuf);
textlock--;
restore_v_event(dict, &save_v_event);
recursive = false;
}
// Put contents of register "regname" into the text.
// Caller must check "regname" to be valid!
// "flags": PUT_FIXINDENT make indent look nice
// PUT_CURSEND leave cursor after end of new text
// PUT_LINE force linewise put (":put")
// PUT_BLOCK_INNER in block mode, do not add trailing spaces
// dir: BACKWARD for 'P', FORWARD for 'p'
void do_put(int regname, yankreg_T *reg, int dir, long count, int flags)
{
char_u *ptr;
char_u *newp;
char_u *oldp;
int yanklen;
size_t totlen = 0; // init for gcc
linenr_T lnum = 0;
colnr_T col = 0;
size_t i; // index in y_array[]
MotionType y_type;
size_t y_size;
size_t oldlen;
int y_width = 0;
colnr_T vcol = 0;
int delcount;
int incr = 0;
struct block_def bd;
char_u **y_array = NULL;
long nr_lines = 0;
pos_T new_cursor;
int indent;
int orig_indent = 0; // init for gcc
int indent_diff = 0; // init for gcc
bool first_indent = true;
int lendiff = 0;
pos_T old_pos;
char_u *insert_string = NULL;
bool allocated = false;
long cnt;
if (flags & PUT_FIXINDENT) {
orig_indent = get_indent();
}
curbuf->b_op_start = curwin->w_cursor; // default for '[ mark
curbuf->b_op_end = curwin->w_cursor; // default for '] mark
/*
* Using inserted text works differently, because the register includes
* special characters (newlines, etc.).
*/
if (regname == '.' && !reg) {
bool non_linewise_vis = (VIsual_active && VIsual_mode != 'V');
// PUT_LINE has special handling below which means we use 'i' to start.
char command_start_char = non_linewise_vis ? 'c' :
(flags & PUT_LINE ? 'i' : (dir == FORWARD ? 'a' : 'i'));
// To avoid 'autoindent' on linewise puts, create a new line with `:put _`.
if (flags & PUT_LINE) {
do_put('_', NULL, dir, 1, PUT_LINE);
}
// If given a count when putting linewise, we stuff the readbuf with the
// dot register 'count' times split by newlines.
if (flags & PUT_LINE) {
stuffcharReadbuff(command_start_char);
for (; count > 0; count--) {
(void)stuff_inserted(NUL, 1, count != 1);
if (count != 1) {
// To avoid 'autoindent' affecting the text, use Ctrl_U to remove any
// whitespace. Can't just insert Ctrl_U into readbuf1, this would go
// back to the previous line in the case of 'noautoindent' and
// 'backspace' includes "eol". So we insert a dummy space for Ctrl_U
// to consume.
stuffReadbuff("\n ");
stuffcharReadbuff(Ctrl_U);
}
}
} else {
(void)stuff_inserted(command_start_char, count, false);
}
// Putting the text is done later, so can't move the cursor to the next
// character. Simulate it with motion commands after the insert.
if (flags & PUT_CURSEND) {
if (flags & PUT_LINE) {
stuffReadbuff("j0");
} else {
// Avoid ringing the bell from attempting to move into the space after
// the current line. We can stuff the readbuffer with "l" if:
// 1) 'virtualedit' is "all" or "onemore"
// 2) We are not at the end of the line
// 3) We are not (one past the end of the line && on the last line)
// This allows a visual put over a selection one past the end of the
// line joining the current line with the one below.
// curwin->w_cursor.col marks the byte position of the cursor in the
// currunt line. It increases up to a max of
// STRLEN(ml_get(curwin->w_cursor.lnum)). With 'virtualedit' and the
// cursor past the end of the line, curwin->w_cursor.coladd is
// incremented instead of curwin->w_cursor.col.
char_u *cursor_pos = get_cursor_pos_ptr();
bool one_past_line = (*cursor_pos == NUL);
bool eol = false;
if (!one_past_line) {
eol = (*(cursor_pos + utfc_ptr2len(cursor_pos)) == NUL);
}
bool ve_allows = (ve_flags == VE_ALL || ve_flags == VE_ONEMORE);
bool eof = curbuf->b_ml.ml_line_count == curwin->w_cursor.lnum
&& one_past_line;
if (ve_allows || !(eol || eof)) {
stuffcharReadbuff('l');
}
}
} else if (flags & PUT_LINE) {
stuffReadbuff("g'[");
}
// So the 'u' command restores cursor position after ".p, save the cursor
// position now (though not saving any text).
if (command_start_char == 'a') {
if (u_save(curwin->w_cursor.lnum, curwin->w_cursor.lnum + 1) == FAIL) {
return;
}
}
return;
}
/*
* For special registers '%' (file name), '#' (alternate file name) and
* ':' (last command line), etc. we have to create a fake yank register.
*/
if (!reg && get_spec_reg(regname, &insert_string, &allocated, true)) {
if (insert_string == NULL) {
return;
}
}
if (!curbuf->terminal) {
// Autocommands may be executed when saving lines for undo. This might
// make y_array invalid, so we start undo now to avoid that.
if (u_save(curwin->w_cursor.lnum, curwin->w_cursor.lnum + 1) == FAIL) {
return;
}
}
if (insert_string != NULL) {
y_type = kMTCharWise;
if (regname == '=') {
/* For the = register we need to split the string at NL
* characters.
* Loop twice: count the number of lines and save them. */
for (;; ) {
y_size = 0;
ptr = insert_string;
while (ptr != NULL) {
if (y_array != NULL) {
y_array[y_size] = ptr;
}
++y_size;
ptr = vim_strchr(ptr, '\n');
if (ptr != NULL) {
if (y_array != NULL) {
*ptr = NUL;
}
++ptr;
// A trailing '\n' makes the register linewise.
if (*ptr == NUL) {
y_type = kMTLineWise;
break;
}
}
}
if (y_array != NULL) {
break;
}
y_array = (char_u **)xmalloc(y_size * sizeof(char_u *));
}
} else {
y_size = 1; // use fake one-line yank register
y_array = &insert_string;
}
} else {
// in case of replacing visually selected text
// the yankreg might already have been saved to avoid
// just restoring the deleted text.
if (reg == NULL) {
reg = get_yank_register(regname, YREG_PASTE);
}
y_type = reg->y_type;
y_width = reg->y_width;
y_size = reg->y_size;
y_array = reg->y_array;
}
if (curbuf->terminal) {
terminal_paste(count, y_array, y_size);
return;
}
if (y_type == kMTLineWise) {
if (flags & PUT_LINE_SPLIT) {
// "p" or "P" in Visual mode: split the lines to put the text in
// between.
if (u_save_cursor() == FAIL) {
goto end;
}
char_u *p = get_cursor_pos_ptr();
if (dir == FORWARD && *p != NUL) {
MB_PTR_ADV(p);
}
ptr = vim_strsave(p);
ml_append(curwin->w_cursor.lnum, ptr, (colnr_T)0, false);
xfree(ptr);
oldp = get_cursor_line_ptr();
p = oldp + curwin->w_cursor.col;
if (dir == FORWARD && *p != NUL) {
MB_PTR_ADV(p);
}
ptr = vim_strnsave(oldp, (size_t)(p - oldp));
ml_replace(curwin->w_cursor.lnum, ptr, false);
nr_lines++;
dir = FORWARD;
}
if (flags & PUT_LINE_FORWARD) {
// Must be "p" for a Visual block, put lines below the block.
curwin->w_cursor = curbuf->b_visual.vi_end;
dir = FORWARD;
}
curbuf->b_op_start = curwin->w_cursor; // default for '[ mark
curbuf->b_op_end = curwin->w_cursor; // default for '] mark
}
if (flags & PUT_LINE) { // :put command or "p" in Visual line mode.
y_type = kMTLineWise;
}
if (y_size == 0 || y_array == NULL) {
semsg(_("E353: Nothing in register %s"),
regname == 0 ? (char_u *)"\"" : transchar(regname));
goto end;
}
if (y_type == kMTBlockWise) {
lnum = curwin->w_cursor.lnum + (linenr_T)y_size + 1;
if (lnum > curbuf->b_ml.ml_line_count) {
lnum = curbuf->b_ml.ml_line_count + 1;
}
if (u_save(curwin->w_cursor.lnum - 1, lnum) == FAIL) {
goto end;
}
} else if (y_type == kMTLineWise) {
lnum = curwin->w_cursor.lnum;
// Correct line number for closed fold. Don't move the cursor yet,
// u_save() uses it.
if (dir == BACKWARD) {
(void)hasFolding(lnum, &lnum, NULL);
} else {
(void)hasFolding(lnum, NULL, &lnum);
}
if (dir == FORWARD) {
lnum++;
}
// In an empty buffer the empty line is going to be replaced, include
// it in the saved lines.
if ((buf_is_empty(curbuf) ?
u_save(0, 2) : u_save(lnum - 1, lnum)) == FAIL) {
goto end;
}
if (dir == FORWARD) {
curwin->w_cursor.lnum = lnum - 1;
} else {
curwin->w_cursor.lnum = lnum;
}
curbuf->b_op_start = curwin->w_cursor; // for mark_adjust()
} else if (u_save_cursor() == FAIL) {
goto end;
}
yanklen = (int)STRLEN(y_array[0]);
if (ve_flags == VE_ALL && y_type == kMTCharWise) {
if (gchar_cursor() == TAB) {
/* Don't need to insert spaces when "p" on the last position of a
* tab or "P" on the first position. */
int viscol = getviscol();
if (dir == FORWARD
? tabstop_padding(viscol, curbuf->b_p_ts, curbuf->b_p_vts_array) != 1
: curwin->w_cursor.coladd > 0) {
coladvance_force(viscol);
} else {
curwin->w_cursor.coladd = 0;
}
} else if (curwin->w_cursor.coladd > 0 || gchar_cursor() == NUL) {
coladvance_force(getviscol() + (dir == FORWARD));
}
}
lnum = curwin->w_cursor.lnum;
col = curwin->w_cursor.col;
/*
* Block mode
*/
if (y_type == kMTBlockWise) {
int c = gchar_cursor();
colnr_T endcol2 = 0;
if (dir == FORWARD && c != NUL) {
if (ve_flags == VE_ALL) {
getvcol(curwin, &curwin->w_cursor, &col, NULL, &endcol2);
} else {
getvcol(curwin, &curwin->w_cursor, NULL, NULL, &col);
}
// move to start of next multi-byte character
curwin->w_cursor.col += utfc_ptr2len(get_cursor_pos_ptr());
col++;
} else {
getvcol(curwin, &curwin->w_cursor, &col, NULL, &endcol2);
}
col += curwin->w_cursor.coladd;
if (ve_flags == VE_ALL
&& (curwin->w_cursor.coladd > 0
|| endcol2 == curwin->w_cursor.col)) {
if (dir == FORWARD && c == NUL) {
col++;
}
if (dir != FORWARD && c != NUL && curwin->w_cursor.coladd > 0) {
curwin->w_cursor.col++;
}
if (c == TAB) {
if (dir == BACKWARD && curwin->w_cursor.col) {
curwin->w_cursor.col--;
}
if (dir == FORWARD && col - 1 == endcol2) {
curwin->w_cursor.col++;
}
}
}
curwin->w_cursor.coladd = 0;
bd.textcol = 0;
for (i = 0; i < y_size; i++) {
int spaces = 0;
char shortline;
// can just be 0 or 1, needed for blockwise paste beyond the current
// buffer end
int lines_appended = 0;
bd.startspaces = 0;
bd.endspaces = 0;
vcol = 0;
delcount = 0;
// add a new line
if (curwin->w_cursor.lnum > curbuf->b_ml.ml_line_count) {
if (ml_append(curbuf->b_ml.ml_line_count, (char_u *)"",
(colnr_T)1, false) == FAIL) {
break;
}
nr_lines++;
lines_appended = 1;
}
// get the old line and advance to the position to insert at
oldp = get_cursor_line_ptr();
oldlen = STRLEN(oldp);
for (ptr = oldp; vcol < col && *ptr; ) {
// Count a tab for what it's worth (if list mode not on)
incr = lbr_chartabsize_adv(oldp, &ptr, vcol);
vcol += incr;
}
bd.textcol = (colnr_T)(ptr - oldp);
shortline = (vcol < col) || (vcol == col && !*ptr);
if (vcol < col) { // line too short, padd with spaces
bd.startspaces = col - vcol;
} else if (vcol > col) {
bd.endspaces = vcol - col;
bd.startspaces = incr - bd.endspaces;
--bd.textcol;
delcount = 1;
bd.textcol -= utf_head_off(oldp, oldp + bd.textcol);
if (oldp[bd.textcol] != TAB) {
/* Only a Tab can be split into spaces. Other
* characters will have to be moved to after the
* block, causing misalignment. */
delcount = 0;
bd.endspaces = 0;
}
}
yanklen = (int)STRLEN(y_array[i]);
if ((flags & PUT_BLOCK_INNER) == 0) {
// calculate number of spaces required to fill right side of
// block
spaces = y_width + 1;
for (int j = 0; j < yanklen; j++) {
spaces -= lbr_chartabsize(NULL, &y_array[i][j], 0);
}
if (spaces < 0) {
spaces = 0;
}
}
// insert the new text
totlen = (size_t)(count * (yanklen + spaces)
+ bd.startspaces + bd.endspaces);
int addcount = (int)totlen + lines_appended;
newp = (char_u *)xmalloc(totlen + oldlen + 1);
// copy part up to cursor to new line
ptr = newp;
memmove(ptr, oldp, (size_t)bd.textcol);
ptr += bd.textcol;
// may insert some spaces before the new text
memset(ptr, ' ', (size_t)bd.startspaces);
ptr += bd.startspaces;
// insert the new text
for (long j = 0; j < count; j++) {
memmove(ptr, y_array[i], (size_t)yanklen);
ptr += yanklen;
// insert block's trailing spaces only if there's text behind
if ((j < count - 1 || !shortline) && spaces) {
memset(ptr, ' ', (size_t)spaces);
ptr += spaces;
} else {
addcount -= spaces;
}
}
// may insert some spaces after the new text
memset(ptr, ' ', (size_t)bd.endspaces);
ptr += bd.endspaces;
// move the text after the cursor to the end of the line.
int columns = (int)oldlen - bd.textcol - delcount + 1;
assert(columns >= 0);
memmove(ptr, oldp + bd.textcol + delcount, (size_t)columns);
ml_replace(curwin->w_cursor.lnum, newp, false);
extmark_splice_cols(curbuf, (int)curwin->w_cursor.lnum-1, bd.textcol,
delcount, addcount, kExtmarkUndo);
++curwin->w_cursor.lnum;
if (i == 0) {
curwin->w_cursor.col += bd.startspaces;
}
}
changed_lines(lnum, 0, curbuf->b_op_start.lnum + (linenr_T)y_size
- (linenr_T)nr_lines, nr_lines, true);
// Set '[ mark.
curbuf->b_op_start = curwin->w_cursor;
curbuf->b_op_start.lnum = lnum;
// adjust '] mark
curbuf->b_op_end.lnum = curwin->w_cursor.lnum - 1;
curbuf->b_op_end.col = bd.textcol + (colnr_T)totlen - 1;
curbuf->b_op_end.coladd = 0;
if (flags & PUT_CURSEND) {
colnr_T len;
curwin->w_cursor = curbuf->b_op_end;
curwin->w_cursor.col++;
// in Insert mode we might be after the NUL, correct for that
len = (colnr_T)STRLEN(get_cursor_line_ptr());
if (curwin->w_cursor.col > len) {
curwin->w_cursor.col = len;
}
} else {
curwin->w_cursor.lnum = lnum;
}
} else {
// Character or Line mode
if (y_type == kMTCharWise) {
// if type is kMTCharWise, FORWARD is the same as BACKWARD on the next
// char
if (dir == FORWARD && gchar_cursor() != NUL) {
int bytelen = utfc_ptr2len(get_cursor_pos_ptr());
// put it on the next of the multi-byte character.
col += bytelen;
if (yanklen) {
curwin->w_cursor.col += bytelen;
curbuf->b_op_end.col += bytelen;
}
}
curbuf->b_op_start = curwin->w_cursor;
}
/*
* Line mode: BACKWARD is the same as FORWARD on the previous line
*/
else if (dir == BACKWARD) {
--lnum;
}
new_cursor = curwin->w_cursor;
// simple case: insert into one line at a time
if (y_type == kMTCharWise && y_size == 1) {
linenr_T end_lnum = 0; // init for gcc
linenr_T start_lnum = lnum;
if (VIsual_active) {
end_lnum = curbuf->b_visual.vi_end.lnum;
if (end_lnum < curbuf->b_visual.vi_start.lnum) {
end_lnum = curbuf->b_visual.vi_start.lnum;
}
if (end_lnum > start_lnum) {
// "col" is valid for the first line, in following lines
// the virtual column needs to be used. Matters for
// multi-byte characters.
pos_T pos = {
.lnum = lnum,
.col = col,
.coladd = 0,
};
getvcol(curwin, &pos, NULL, &vcol, NULL);
}
}
do {
totlen = (size_t)(count * yanklen);
if (totlen > 0) {
oldp = ml_get(lnum);
if (lnum > start_lnum) {
pos_T pos = {
.lnum = lnum,
};
if (getvpos(&pos, vcol) == OK) {
col = pos.col;
} else {
col = MAXCOL;
}
}
if (VIsual_active && col > (int)STRLEN(oldp)) {
lnum++;
continue;
}
newp = (char_u *)xmalloc((size_t)(STRLEN(oldp) + totlen + 1));
memmove(newp, oldp, (size_t)col);
ptr = newp + col;
for (i = 0; i < (size_t)count; i++) {
memmove(ptr, y_array[0], (size_t)yanklen);
ptr += yanklen;
}
STRMOVE(ptr, oldp + col);
ml_replace(lnum, newp, false);
// Place cursor on last putted char.
if (lnum == curwin->w_cursor.lnum) {
// make sure curwin->w_virtcol is updated
changed_cline_bef_curs();
curwin->w_cursor.col += (colnr_T)(totlen - 1);
}
changed_bytes(lnum, col);
extmark_splice_cols(curbuf, (int)lnum-1, col,
0, (int)totlen, kExtmarkUndo);
}
if (VIsual_active) {
lnum++;
}
} while (VIsual_active && lnum <= end_lnum);
if (VIsual_active) { // reset lnum to the last visual line
lnum--;
}
curbuf->b_op_end = curwin->w_cursor;
// For "CTRL-O p" in Insert mode, put cursor after last char
if (totlen && (restart_edit != 0 || (flags & PUT_CURSEND))) {
curwin->w_cursor.col++;
}
} else {
// Insert at least one line. When y_type is kMTCharWise, break the first
// line in two.
for (cnt = 1; cnt <= count; cnt++) {
i = 0;
if (y_type == kMTCharWise) {
// Split the current line in two at the insert position.
// First insert y_array[size - 1] in front of second line.
// Then append y_array[0] to first line.
lnum = new_cursor.lnum;
ptr = ml_get(lnum) + col;
totlen = STRLEN(y_array[y_size - 1]);
newp = (char_u *)xmalloc((size_t)(STRLEN(ptr) + totlen + 1));
STRCPY(newp, y_array[y_size - 1]);
STRCAT(newp, ptr);
// insert second line
ml_append(lnum, newp, (colnr_T)0, false);
xfree(newp);
oldp = ml_get(lnum);
newp = (char_u *)xmalloc((size_t)col + (size_t)yanklen + 1);
// copy first part of line
memmove(newp, oldp, (size_t)col);
// append to first line
memmove(newp + col, y_array[0], (size_t)yanklen + 1);
ml_replace(lnum, newp, false);
curwin->w_cursor.lnum = lnum;
i = 1;
}
for (; i < y_size; i++) {
if ((y_type != kMTCharWise || i < y_size - 1)
&& ml_append(lnum, y_array[i], (colnr_T)0, false)
== FAIL) {
goto error;
}
lnum++;
++nr_lines;
if (flags & PUT_FIXINDENT) {
old_pos = curwin->w_cursor;
curwin->w_cursor.lnum = lnum;
ptr = ml_get(lnum);
if (cnt == count && i == y_size - 1) {
lendiff = (int)STRLEN(ptr);
}
if (*ptr == '#' && preprocs_left()) {
indent = 0; // Leave # lines at start
} else if (*ptr == NUL) {
indent = 0; // Ignore empty lines
} else if (first_indent) {
indent_diff = orig_indent - get_indent();
indent = orig_indent;
first_indent = false;
} else if ((indent = get_indent() + indent_diff) < 0) {
indent = 0;
}
(void)set_indent(indent, SIN_NOMARK);
curwin->w_cursor = old_pos;
// remember how many chars were removed
if (cnt == count && i == y_size - 1) {
lendiff -= (int)STRLEN(ml_get(lnum));
}
}
}
bcount_t totsize = 0;
int lastsize = 0;
if (y_type == kMTCharWise
|| (y_type == kMTLineWise && flags & PUT_LINE_SPLIT)) {
for (i = 0; i < y_size-1; i++) {
totsize += (bcount_t)STRLEN(y_array[i]) + 1;
}
lastsize = (int)STRLEN(y_array[y_size-1]);
totsize += lastsize;
}
if (y_type == kMTCharWise) {
extmark_splice(curbuf, (int)new_cursor.lnum-1, col, 0, 0, 0,
(int)y_size-1, lastsize, totsize,
kExtmarkUndo);
} else if (y_type == kMTLineWise && flags & PUT_LINE_SPLIT) {
// Account for last pasted NL + last NL
extmark_splice(curbuf, (int)new_cursor.lnum-1, col + 1, 0, 0, 0,
(int)y_size+1, 0, totsize+2, kExtmarkUndo);
}
}
error:
// Adjust marks.
if (y_type == kMTLineWise) {
curbuf->b_op_start.col = 0;
if (dir == FORWARD) {
curbuf->b_op_start.lnum++;
}
}
ExtmarkOp kind = (y_type == kMTLineWise && !(flags & PUT_LINE_SPLIT))
? kExtmarkUndo : kExtmarkNOOP;
mark_adjust(curbuf->b_op_start.lnum + (y_type == kMTCharWise),
(linenr_T)MAXLNUM, nr_lines, 0L, kind);
// note changed text for displaying and folding
if (y_type == kMTCharWise) {
changed_lines(curwin->w_cursor.lnum, col,
curwin->w_cursor.lnum + 1, nr_lines, true);
} else {
changed_lines(curbuf->b_op_start.lnum, 0,
curbuf->b_op_start.lnum, nr_lines, true);
}
// put '] mark at last inserted character
curbuf->b_op_end.lnum = lnum;
// correct length for change in indent
col = (colnr_T)STRLEN(y_array[y_size - 1]) - lendiff;
if (col > 1) {
curbuf->b_op_end.col = col - 1;
} else {
curbuf->b_op_end.col = 0;
}
if (flags & PUT_CURSLINE) {
// ":put": put cursor on last inserted line
curwin->w_cursor.lnum = lnum;
beginline(BL_WHITE | BL_FIX);
} else if (flags & PUT_CURSEND) {
// put cursor after inserted text
if (y_type == kMTLineWise) {
if (lnum >= curbuf->b_ml.ml_line_count) {
curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count;
} else {
curwin->w_cursor.lnum = lnum + 1;
}
curwin->w_cursor.col = 0;
} else {
curwin->w_cursor.lnum = lnum;
curwin->w_cursor.col = col;
}
} else if (y_type == kMTLineWise) {
// put cursor on first non-blank in first inserted line
curwin->w_cursor.col = 0;
if (dir == FORWARD) {
++curwin->w_cursor.lnum;
}
beginline(BL_WHITE | BL_FIX);
} else { // put cursor on first inserted character
curwin->w_cursor = new_cursor;
}
}
}
msgmore(nr_lines);
curwin->w_set_curswant = TRUE;
end:
if (allocated) {
xfree(insert_string);
}
if (regname == '=') {
xfree(y_array);
}
VIsual_active = FALSE;
// If the cursor is past the end of the line put it at the end.
adjust_cursor_eol();
} // NOLINT(readability/fn_size)
/*
* When the cursor is on the NUL past the end of the line and it should not be
* there move it left.
*/
void adjust_cursor_eol(void)
{
if (curwin->w_cursor.col > 0
&& gchar_cursor() == NUL
&& (ve_flags & VE_ONEMORE) == 0
&& !(restart_edit || (State & INSERT))) {
// Put the cursor on the last character in the line.
dec_cursor();
if (ve_flags == VE_ALL) {
colnr_T scol, ecol;
// Coladd is set to the width of the last character.
getvcol(curwin, &curwin->w_cursor, &scol, NULL, &ecol);
curwin->w_cursor.coladd = ecol - scol + 1;
}
}
}
/*
* Return TRUE if lines starting with '#' should be left aligned.
*/
int preprocs_left(void)
{
return ((curbuf->b_p_si && !curbuf->b_p_cin)
|| (curbuf->b_p_cin && in_cinkeys('#', ' ', true)
&& curbuf->b_ind_hash_comment == 0));
}
// Return the character name of the register with the given number
int get_register_name(int num)
{
if (num == -1) {
return '"';
} else if (num < 10) {
return num + '0';
} else if (num == DELETION_REGISTER) {
return '-';
} else if (num == STAR_REGISTER) {
return '*';
} else if (num == PLUS_REGISTER) {
return '+';
} else {
return num + 'a' - 10;
}
}
/// @return the index of the register "" points to.
int get_unname_register(void)
{
return y_previous == NULL ? -1 : (int)(y_previous - &y_regs[0]);
}
/*
* ":dis" and ":registers": Display the contents of the yank registers.
*/
void ex_display(exarg_T *eap)
{
char_u *p;
yankreg_T *yb;
int name;
char_u *arg = eap->arg;
int clen;
char_u type[2];
if (arg != NULL && *arg == NUL) {
arg = NULL;
}
int attr = HL_ATTR(HLF_8);
// Highlight title
msg_puts_title(_("\nType Name Content"));
for (int i = -1; i < NUM_REGISTERS && !got_int; i++) {
name = get_register_name(i);
switch (get_reg_type(name, NULL)) {
case kMTLineWise:
type[0] = 'l'; break;
case kMTCharWise:
type[0] = 'c'; break;
default:
type[0] = 'b'; break;
}
if (arg != NULL && vim_strchr(arg, name) == NULL) {
continue; // did not ask for this register
}
if (i == -1) {
if (y_previous != NULL) {
yb = y_previous;
} else {
yb = &(y_regs[0]);
}
} else {
yb = &(y_regs[i]);
}
get_clipboard(name, &yb, true);
if (name == mb_tolower(redir_reg)
|| (redir_reg == '"' && yb == y_previous)) {
continue; // do not list register being written to, the
// pointer can be freed
}
if (yb->y_array != NULL) {
msg_putchar('\n');
msg_puts(" ");
msg_putchar(type[0]);
msg_puts(" ");
msg_putchar('"');
msg_putchar(name);
msg_puts(" ");
int n = Columns - 11;
for (size_t j = 0; j < yb->y_size && n > 1; j++) {
if (j) {
msg_puts_attr("^J", attr);
n -= 2;
}
for (p = yb->y_array[j]; *p && (n -= ptr2cells(p)) >= 0; p++) { // -V1019 NOLINT(whitespace/line_length)
clen = utfc_ptr2len(p);
msg_outtrans_len(p, clen);
p += clen - 1;
}
}
if (n > 1 && yb->y_type == kMTLineWise) {
msg_puts_attr("^J", attr);
}
ui_flush(); // show one line at a time
}
os_breakcheck();
}
/*
* display last inserted text
*/
if ((p = get_last_insert()) != NULL
&& (arg == NULL || vim_strchr(arg, '.') != NULL) && !got_int) {
msg_puts("\n c \". ");
dis_msg(p, true);
}
/*
* display last command line
*/
if (last_cmdline != NULL && (arg == NULL || vim_strchr(arg, ':') != NULL)
&& !got_int) {
msg_puts("\n c \": ");
dis_msg(last_cmdline, false);
}
/*
* display current file name
*/
if (curbuf->b_fname != NULL
&& (arg == NULL || vim_strchr(arg, '%') != NULL) && !got_int) {
msg_puts("\n c \"% ");
dis_msg(curbuf->b_fname, false);
}
/*
* display alternate file name
*/
if ((arg == NULL || vim_strchr(arg, '%') != NULL) && !got_int) {
char_u *fname;
linenr_T dummy;
if (buflist_name_nr(0, &fname, &dummy) != FAIL) {
msg_puts("\n c \"# ");
dis_msg(fname, false);
}
}
/*
* display last search pattern
*/
if (last_search_pat() != NULL
&& (arg == NULL || vim_strchr(arg, '/') != NULL) && !got_int) {
msg_puts("\n c \"/ ");
dis_msg(last_search_pat(), false);
}
/*
* display last used expression
*/
if (expr_line != NULL && (arg == NULL || vim_strchr(arg, '=') != NULL)
&& !got_int) {
msg_puts("\n c \"= ");
dis_msg(expr_line, false);
}
}
/// display a string for do_dis()
/// truncate at end of screen line
///
/// @param skip_esc if true, ignore trailing ESC
static void dis_msg(const char_u *p, bool skip_esc)
FUNC_ATTR_NONNULL_ALL
{
int n;
int l;
n = Columns - 6;
while (*p != NUL
&& !(*p == ESC && skip_esc && *(p + 1) == NUL)
&& (n -= ptr2cells(p)) >= 0) {
if ((l = utfc_ptr2len(p)) > 1) {
msg_outtrans_len(p, l);
p += l;
} else {
msg_outtrans_len(p++, 1);
}
}
os_breakcheck();
}
/// If \p "process" is true and the line begins with a comment leader (possibly
/// after some white space), return a pointer to the text after it.
/// Put a boolean value indicating whether the line ends with an unclosed
/// comment in "is_comment".
///
/// @param line - line to be processed
/// @param process - if false, will only check whether the line ends
/// with an unclosed comment,
/// @param include_space - whether to skip space following the comment leader
/// @param[out] is_comment - whether the current line ends with an unclosed
/// comment.
char_u *skip_comment(char_u *line, bool process, bool include_space, bool *is_comment)
{
char_u *comment_flags = NULL;
int lead_len;
int leader_offset = get_last_leader_offset(line, &comment_flags);
*is_comment = false;
if (leader_offset != -1) {
// Let's check whether the line ends with an unclosed comment.
// If the last comment leader has COM_END in flags, there's no comment.
while (*comment_flags) {
if (*comment_flags == COM_END
|| *comment_flags == ':') {
break;
}
comment_flags++;
}
if (*comment_flags != COM_END) {
*is_comment = true;
}
}
if (process == false) {
return line;
}
lead_len = get_leader_len(line, &comment_flags, false, include_space);
if (lead_len == 0) {
return line;
}
// Find:
// - COM_END,
// - colon,
// whichever comes first.
while (*comment_flags) {
if (*comment_flags == COM_END
|| *comment_flags == ':') {
break;
}
++comment_flags;
}
// If we found a colon, it means that we are not processing a line
// starting with a closing part of a three-part comment. That's good,
// because we don't want to remove those as this would be annoying.
if (*comment_flags == ':' || *comment_flags == NUL) {
line += lead_len;
}
return line;
}
// Join 'count' lines (minimal 2) at cursor position.
// When "save_undo" is TRUE save lines for undo first.
// Set "use_formatoptions" to FALSE when e.g. processing backspace and comment
// leaders should not be removed.
// When setmark is true, sets the '[ and '] mark, else, the caller is expected
// to set those marks.
//
// return FAIL for failure, OK otherwise
int do_join(size_t count, int insert_space, int save_undo, int use_formatoptions, bool setmark)
{
char_u *curr = NULL;
char_u *curr_start = NULL;
char_u *cend;
char_u *newp;
char_u *spaces; // number of spaces inserted before a line
int endcurr1 = NUL;
int endcurr2 = NUL;
int currsize = 0; // size of the current line
int sumsize = 0; // size of the long new line
linenr_T t;
colnr_T col = 0;
int ret = OK;
int *comments = NULL;
int remove_comments = (use_formatoptions == TRUE)
&& has_format_option(FO_REMOVE_COMS);
bool prev_was_comment = false;
assert(count >= 1);
if (save_undo && u_save(curwin->w_cursor.lnum - 1,
curwin->w_cursor.lnum + (linenr_T)count) == FAIL) {
return FAIL;
}
// Allocate an array to store the number of spaces inserted before each
// line. We will use it to pre-compute the length of the new line and the
// proper placement of each original line in the new one.
spaces = xcalloc(count, 1);
if (remove_comments) {
comments = xcalloc(count, sizeof(*comments));
}
// Don't move anything, just compute the final line length
// and setup the array of space strings lengths
for (t = 0; t < (linenr_T)count; t++) {
curr = curr_start = ml_get((linenr_T)(curwin->w_cursor.lnum + t));
if (t == 0 && setmark) {
// Set the '[ mark.
curwin->w_buffer->b_op_start.lnum = curwin->w_cursor.lnum;
curwin->w_buffer->b_op_start.col = (colnr_T)STRLEN(curr);
}
if (remove_comments) {
// We don't want to remove the comment leader if the
// previous line is not a comment.
if (t > 0 && prev_was_comment) {
char_u *new_curr = skip_comment(curr, true, insert_space,
&prev_was_comment);
comments[t] = (int)(new_curr - curr);
curr = new_curr;
} else {
curr = skip_comment(curr, false, insert_space, &prev_was_comment);
}
}
if (insert_space && t > 0) {
curr = skipwhite(curr);
if (*curr != NUL
&& *curr != ')'
&& sumsize != 0
&& endcurr1 != TAB
&& (!has_format_option(FO_MBYTE_JOIN)
|| (utf_ptr2char(curr) < 0x100 && endcurr1 < 0x100))
&& (!has_format_option(FO_MBYTE_JOIN2)
|| (utf_ptr2char(curr) < 0x100 && !utf_eat_space(endcurr1))
|| (endcurr1 < 0x100 &&
!utf_eat_space(utf_ptr2char(curr))))) {
// don't add a space if the line is ending in a space
if (endcurr1 == ' ') {
endcurr1 = endcurr2;
} else {
++spaces[t];
}
// Extra space when 'joinspaces' set and line ends in '.', '?', or '!'.
if (p_js && (endcurr1 == '.' || endcurr1 == '?' || endcurr1 == '!')) {
++spaces[t];
}
}
}
if (t > 0 && curbuf_splice_pending == 0) {
colnr_T removed = (int)(curr- curr_start);
extmark_splice(curbuf, (int)curwin->w_cursor.lnum-1, sumsize,
1, removed, removed + 1,
0, spaces[t], spaces[t],
kExtmarkUndo);
}
currsize = (int)STRLEN(curr);
sumsize += currsize + spaces[t];
endcurr1 = endcurr2 = NUL;
if (insert_space && currsize > 0) {
cend = curr + currsize;
MB_PTR_BACK(curr, cend);
endcurr1 = utf_ptr2char(cend);
if (cend > curr) {
MB_PTR_BACK(curr, cend);
endcurr2 = utf_ptr2char(cend);
}
}
line_breakcheck();
if (got_int) {
ret = FAIL;
goto theend;
}
}
// store the column position before last line
col = sumsize - currsize - spaces[count - 1];
// allocate the space for the new line
newp = (char_u *)xmalloc((size_t)sumsize + 1);
cend = newp + sumsize;
*cend = 0;
/*
* Move affected lines to the new long one.
*
* Move marks from each deleted line to the joined line, adjusting the
* column. This is not Vi compatible, but Vi deletes the marks, thus that
* should not really be a problem.
*/
curbuf_splice_pending++;
for (t = (linenr_T)count - 1;; t--) {
cend -= currsize;
memmove(cend, curr, (size_t)currsize);
if (spaces[t] > 0) {
cend -= spaces[t];
memset(cend, ' ', (size_t)(spaces[t]));
}
// If deleting more spaces than adding, the cursor moves no more than
// what is added if it is inside these spaces.
const int spaces_removed = (int)((curr - curr_start) - spaces[t]);
linenr_T lnum = curwin->w_cursor.lnum + t;
colnr_T mincol = (colnr_T)0;
long lnum_amount = -t;
long col_amount = (cend - newp - spaces_removed);
mark_col_adjust(lnum, mincol, lnum_amount, col_amount, spaces_removed);
if (t == 0) {
break;
}
curr = curr_start = ml_get((linenr_T)(curwin->w_cursor.lnum + t - 1));
if (remove_comments) {
curr += comments[t - 1];
}
if (insert_space && t > 1) {
curr = skipwhite(curr);
}
currsize = (int)STRLEN(curr);
}
ml_replace(curwin->w_cursor.lnum, newp, false);
if (setmark) {
// Set the '] mark.
curwin->w_buffer->b_op_end.lnum = curwin->w_cursor.lnum;
curwin->w_buffer->b_op_end.col = sumsize;
}
// Only report the change in the first line here, del_lines() will report
// the deleted line.
changed_lines(curwin->w_cursor.lnum, currsize,
curwin->w_cursor.lnum + 1, 0L, true);
/*
* Delete following lines. To do this we move the cursor there
* briefly, and then move it back. After del_lines() the cursor may
* have moved up (last line deleted), so the current lnum is kept in t.
*/
t = curwin->w_cursor.lnum;
curwin->w_cursor.lnum++;
del_lines((long)count - 1, false);
curwin->w_cursor.lnum = t;
curbuf_splice_pending--;
curbuf->deleted_bytes2 = 0;
/*
* Set the cursor column:
* Vi compatible: use the column of the first join
* vim: use the column of the last join
*/
curwin->w_cursor.col =
(vim_strchr(p_cpo, CPO_JOINCOL) != NULL ? currsize : col);
check_cursor_col();
curwin->w_cursor.coladd = 0;
curwin->w_set_curswant = TRUE;
theend:
xfree(spaces);
if (remove_comments) {
xfree(comments);
}
return ret;
}
/*
* Return TRUE if the two comment leaders given are the same. "lnum" is
* the first line. White-space is ignored. Note that the whole of
* 'leader1' must match 'leader2_len' characters from 'leader2' -- webb
*/
static int same_leader(linenr_T lnum, int leader1_len, char_u *leader1_flags, int leader2_len,
char_u *leader2_flags)
{
int idx1 = 0, idx2 = 0;
char_u *p;
char_u *line1;
char_u *line2;
if (leader1_len == 0) {
return leader2_len == 0;
}
/*
* If first leader has 'f' flag, the lines can be joined only if the
* second line does not have a leader.
* If first leader has 'e' flag, the lines can never be joined.
* If fist leader has 's' flag, the lines can only be joined if there is
* some text after it and the second line has the 'm' flag.
*/
if (leader1_flags != NULL) {
for (p = leader1_flags; *p && *p != ':'; ++p) {
if (*p == COM_FIRST) {
return leader2_len == 0;
}
if (*p == COM_END) {
return FALSE;
}
if (*p == COM_START) {
if (*(ml_get(lnum) + leader1_len) == NUL) {
return FALSE;
}
if (leader2_flags == NULL || leader2_len == 0) {
return FALSE;
}
for (p = leader2_flags; *p && *p != ':'; ++p) {
if (*p == COM_MIDDLE) {
return TRUE;
}
}
return FALSE;
}
}
}
/*
* Get current line and next line, compare the leaders.
* The first line has to be saved, only one line can be locked at a time.
*/
line1 = vim_strsave(ml_get(lnum));
for (idx1 = 0; ascii_iswhite(line1[idx1]); ++idx1) {
}
line2 = ml_get(lnum + 1);
for (idx2 = 0; idx2 < leader2_len; ++idx2) {
if (!ascii_iswhite(line2[idx2])) {
if (line1[idx1++] != line2[idx2]) {
break;
}
} else {
while (ascii_iswhite(line1[idx1])) {
++idx1;
}
}
}
xfree(line1);
return idx2 == leader2_len && idx1 == leader1_len;
}
/// Implementation of the format operator 'gq'.
///
/// @param keep_cursor keep cursor on same text char
void op_format(oparg_T *oap, int keep_cursor)
{
long old_line_count = curbuf->b_ml.ml_line_count;
// Place the cursor where the "gq" or "gw" command was given, so that "u"
// can put it back there.
curwin->w_cursor = oap->cursor_start;
if (u_save((linenr_T)(oap->start.lnum - 1),
(linenr_T)(oap->end.lnum + 1)) == FAIL) {
return;
}
curwin->w_cursor = oap->start;
if (oap->is_VIsual) {
// When there is no change: need to remove the Visual selection
redraw_curbuf_later(INVERTED);
}
// Set '[ mark at the start of the formatted area
curbuf->b_op_start = oap->start;
// For "gw" remember the cursor position and put it back below (adjusted
// for joined and split lines).
if (keep_cursor) {
saved_cursor = oap->cursor_start;
}
format_lines(oap->line_count, keep_cursor);
/*
* Leave the cursor at the first non-blank of the last formatted line.
* If the cursor was moved one line back (e.g. with "Q}") go to the next
* line, so "." will do the next lines.
*/
if (oap->end_adjusted && curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count) {
++curwin->w_cursor.lnum;
}
beginline(BL_WHITE | BL_FIX);
old_line_count = curbuf->b_ml.ml_line_count - old_line_count;
msgmore(old_line_count);
// put '] mark on the end of the formatted area
curbuf->b_op_end = curwin->w_cursor;
if (keep_cursor) {
curwin->w_cursor = saved_cursor;
saved_cursor.lnum = 0;
}
if (oap->is_VIsual) {
FOR_ALL_WINDOWS_IN_TAB(wp, curtab) {
if (wp->w_old_cursor_lnum != 0) {
// When lines have been inserted or deleted, adjust the end of
// the Visual area to be redrawn.
if (wp->w_old_cursor_lnum > wp->w_old_visual_lnum) {
wp->w_old_cursor_lnum += old_line_count;
} else {
wp->w_old_visual_lnum += old_line_count;
}
}
}
}
}
/*
* Implementation of the format operator 'gq' for when using 'formatexpr'.
*/
void op_formatexpr(oparg_T *oap)
{
if (oap->is_VIsual) {
// When there is no change: need to remove the Visual selection
redraw_curbuf_later(INVERTED);
}
if (fex_format(oap->start.lnum, oap->line_count, NUL) != 0) {
// As documented: when 'formatexpr' returns non-zero fall back to
// internal formatting.
op_format(oap, false);
}
}
/// @param c character to be inserted
int fex_format(linenr_T lnum, long count, int c)
{
int use_sandbox = was_set_insecurely(curwin, "formatexpr", OPT_LOCAL);
int r;
char_u *fex;
/*
* Set v:lnum to the first line number and v:count to the number of lines.
* Set v:char to the character to be inserted (can be NUL).
*/
set_vim_var_nr(VV_LNUM, (varnumber_T)lnum);
set_vim_var_nr(VV_COUNT, (varnumber_T)count);
set_vim_var_char(c);
// Make a copy, the option could be changed while calling it.
fex = vim_strsave(curbuf->b_p_fex);
// Evaluate the function.
if (use_sandbox) {
sandbox++;
}
r = (int)eval_to_number(fex);
if (use_sandbox) {
sandbox--;
}
set_vim_var_string(VV_CHAR, NULL, -1);
xfree(fex);
return r;
}
/// Format "line_count" lines, starting at the cursor position.
/// When "line_count" is negative, format until the end of the paragraph.
/// Lines after the cursor line are saved for undo, caller must have saved the
/// first line.
///
/// @param avoid_fex don't use 'formatexpr'
void format_lines(linenr_T line_count, int avoid_fex)
{
bool is_not_par; // current line not part of parag.
bool next_is_not_par; // next line not part of paragraph
bool is_end_par; // at end of paragraph
bool prev_is_end_par = false; // prev. line not part of parag.
bool next_is_start_par = false;
int leader_len = 0; // leader len of current line
int next_leader_len; // leader len of next line
char_u *leader_flags = NULL; // flags for leader of current line
char_u *next_leader_flags; // flags for leader of next line
bool advance = true;
int second_indent = -1; // indent for second line (comment aware)
bool first_par_line = true;
int smd_save;
long count;
bool need_set_indent = true; // set indent of next paragraph
bool force_format = false;
const int old_State = State;
// length of a line to force formatting: 3 * 'tw'
const int max_len = comp_textwidth(true) * 3;
// check for 'q', '2' and '1' in 'formatoptions'
const bool do_comments = has_format_option(FO_Q_COMS); // format comments
int do_comments_list = 0; // format comments with 'n' or '2'
const bool do_second_indent = has_format_option(FO_Q_SECOND);
const bool do_number_indent = has_format_option(FO_Q_NUMBER);
const bool do_trail_white = has_format_option(FO_WHITE_PAR);
// Get info about the previous and current line.
if (curwin->w_cursor.lnum > 1) {
is_not_par = fmt_check_par(curwin->w_cursor.lnum - 1,
&leader_len, &leader_flags, do_comments);
} else {
is_not_par = true;
}
next_is_not_par = fmt_check_par(curwin->w_cursor.lnum,
&next_leader_len, &next_leader_flags, do_comments
);
is_end_par = (is_not_par || next_is_not_par);
if (!is_end_par && do_trail_white) {
is_end_par = !ends_in_white(curwin->w_cursor.lnum - 1);
}
curwin->w_cursor.lnum--;
for (count = line_count; count != 0 && !got_int; --count) {
/*
* Advance to next paragraph.
*/
if (advance) {
curwin->w_cursor.lnum++;
prev_is_end_par = is_end_par;
is_not_par = next_is_not_par;
leader_len = next_leader_len;
leader_flags = next_leader_flags;
}
/*
* The last line to be formatted.
*/
if (count == 1 || curwin->w_cursor.lnum == curbuf->b_ml.ml_line_count) {
next_is_not_par = true;
next_leader_len = 0;
next_leader_flags = NULL;
} else {
next_is_not_par = fmt_check_par(curwin->w_cursor.lnum + 1,
&next_leader_len, &next_leader_flags, do_comments
);
if (do_number_indent) {
next_is_start_par =
(get_number_indent(curwin->w_cursor.lnum + 1) > 0);
}
}
advance = true;
is_end_par = (is_not_par || next_is_not_par || next_is_start_par);
if (!is_end_par && do_trail_white) {
is_end_par = !ends_in_white(curwin->w_cursor.lnum);
}
/*
* Skip lines that are not in a paragraph.
*/
if (is_not_par) {
if (line_count < 0) {
break;
}
} else {
/*
* For the first line of a paragraph, check indent of second line.
* Don't do this for comments and empty lines.
*/
if (first_par_line
&& (do_second_indent || do_number_indent)
&& prev_is_end_par
&& curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count) {
if (do_second_indent && !LINEEMPTY(curwin->w_cursor.lnum + 1)) {
if (leader_len == 0 && next_leader_len == 0) {
// no comment found
second_indent =
get_indent_lnum(curwin->w_cursor.lnum + 1);
} else {
second_indent = next_leader_len;
do_comments_list = 1;
}
} else if (do_number_indent) {
if (leader_len == 0 && next_leader_len == 0) {
// no comment found
second_indent =
get_number_indent(curwin->w_cursor.lnum);
} else {
// get_number_indent() is now "comment aware"...
second_indent =
get_number_indent(curwin->w_cursor.lnum);
do_comments_list = 1;
}
}
}
/*
* When the comment leader changes, it's the end of the paragraph.
*/
if (curwin->w_cursor.lnum >= curbuf->b_ml.ml_line_count
|| !same_leader(curwin->w_cursor.lnum,
leader_len, leader_flags,
next_leader_len,
next_leader_flags)) {
is_end_par = true;
}
/*
* If we have got to the end of a paragraph, or the line is
* getting long, format it.
*/
if (is_end_par || force_format) {
if (need_set_indent) {
// replace indent in first line with minimal number of
// tabs and spaces, according to current options
(void)set_indent(get_indent(), SIN_CHANGED);
}
// put cursor on last non-space
State = NORMAL; // don't go past end-of-line
coladvance(MAXCOL);
while (curwin->w_cursor.col && ascii_isspace(gchar_cursor())) {
dec_cursor();
}
// do the formatting, without 'showmode'
State = INSERT; // for open_line()
smd_save = p_smd;
p_smd = FALSE;
insertchar(NUL, INSCHAR_FORMAT
+ (do_comments ? INSCHAR_DO_COM : 0)
+ (do_comments && do_comments_list
? INSCHAR_COM_LIST : 0)
+ (avoid_fex ? INSCHAR_NO_FEX : 0), second_indent);
State = old_State;
p_smd = smd_save;
second_indent = -1;
// at end of par.: need to set indent of next par.
need_set_indent = is_end_par;
if (is_end_par) {
// When called with a negative line count, break at the
// end of the paragraph.
if (line_count < 0) {
break;
}
first_par_line = true;
}
force_format = false;
}
/*
* When still in same paragraph, join the lines together. But
* first delete the leader from the second line.
*/
if (!is_end_par) {
advance = false;
curwin->w_cursor.lnum++;
curwin->w_cursor.col = 0;
if (line_count < 0 && u_save_cursor() == FAIL) {
break;
}
if (next_leader_len > 0) {
(void)del_bytes(next_leader_len, false, false);
mark_col_adjust(curwin->w_cursor.lnum, (colnr_T)0, 0L,
(long)-next_leader_len, 0);
} else if (second_indent > 0) { // the "leader" for FO_Q_SECOND
int indent = (int)getwhitecols_curline();
if (indent > 0) {
(void)del_bytes(indent, false, false);
mark_col_adjust(curwin->w_cursor.lnum,
(colnr_T)0, 0L, (long)-indent, 0);
}
}
curwin->w_cursor.lnum--;
if (do_join(2, TRUE, FALSE, FALSE, false) == FAIL) {
beep_flush();
break;
}
first_par_line = false;
// If the line is getting long, format it next time
if (STRLEN(get_cursor_line_ptr()) > (size_t)max_len) {
force_format = true;
} else {
force_format = false;
}
}
}
line_breakcheck();
}
}
/*
* Return TRUE if line "lnum" ends in a white character.
*/
static int ends_in_white(linenr_T lnum)
{
char_u *s = ml_get(lnum);
size_t l;
if (*s == NUL) {
return FALSE;
}
l = STRLEN(s) - 1;
return ascii_iswhite(s[l]);
}
/*
* Blank lines, and lines containing only the comment leader, are left
* untouched by the formatting. The function returns TRUE in this
* case. It also returns TRUE when a line starts with the end of a comment
* ('e' in comment flags), so that this line is skipped, and not joined to the
* previous line. A new paragraph starts after a blank line, or when the
* comment leader changes -- webb.
*/
static int fmt_check_par(linenr_T lnum, int *leader_len, char_u **leader_flags, int do_comments)
{
char_u *flags = NULL; // init for GCC
char_u *ptr;
ptr = ml_get(lnum);
if (do_comments) {
*leader_len = get_leader_len(ptr, leader_flags, false, true);
} else {
*leader_len = 0;
}
if (*leader_len > 0) {
/*
* Search for 'e' flag in comment leader flags.
*/
flags = *leader_flags;
while (*flags && *flags != ':' && *flags != COM_END) {
++flags;
}
}
return *skipwhite(ptr + *leader_len) == NUL
|| (*leader_len > 0 && *flags == COM_END)
|| startPS(lnum, NUL, FALSE);
}
/*
* Return TRUE when a paragraph starts in line "lnum". Return FALSE when the
* previous line is in the same paragraph. Used for auto-formatting.
*/
int paragraph_start(linenr_T lnum)
{
char_u *p;
int leader_len = 0; // leader len of current line
char_u *leader_flags = NULL; // flags for leader of current line
int next_leader_len = 0; // leader len of next line
char_u *next_leader_flags = NULL; // flags for leader of next line
if (lnum <= 1) {
return TRUE; // start of the file
}
p = ml_get(lnum - 1);
if (*p == NUL) {
return TRUE; // after empty line
}
const bool do_comments = has_format_option(FO_Q_COMS); // format comments
if (fmt_check_par(lnum - 1, &leader_len, &leader_flags, do_comments)) {
return true; // after non-paragraph line
}
if (fmt_check_par(lnum, &next_leader_len, &next_leader_flags, do_comments)) {
return true; // "lnum" is not a paragraph line
}
if (has_format_option(FO_WHITE_PAR) && !ends_in_white(lnum - 1)) {
return TRUE; // missing trailing space in previous line.
}
if (has_format_option(FO_Q_NUMBER) && (get_number_indent(lnum) > 0)) {
return TRUE; // numbered item starts in "lnum".
}
if (!same_leader(lnum - 1, leader_len, leader_flags,
next_leader_len, next_leader_flags)) {
return TRUE; // change of comment leader.
}
return FALSE;
}
/*
* prepare a few things for block mode yank/delete/tilde
*
* for delete:
* - textlen includes the first/last char to be (partly) deleted
* - start/endspaces is the number of columns that are taken by the
* first/last deleted char minus the number of columns that have to be
* deleted.
* for yank and tilde:
* - textlen includes the first/last char to be wholly yanked
* - start/endspaces is the number of columns of the first/last yanked char
* that are to be yanked.
*/
static void block_prep(oparg_T *oap, struct block_def *bdp, linenr_T lnum, bool is_del)
{
int incr = 0;
char_u *pend;
char_u *pstart;
char_u *line;
char_u *prev_pstart;
char_u *prev_pend;
const int lbr_saved = curwin->w_p_lbr;
// Avoid a problem with unwanted linebreaks in block mode.
curwin->w_p_lbr = false;
bdp->startspaces = 0;
bdp->endspaces = 0;
bdp->textlen = 0;
bdp->start_vcol = 0;
bdp->end_vcol = 0;
bdp->is_short = false;
bdp->is_oneChar = false;
bdp->pre_whitesp = 0;
bdp->pre_whitesp_c = 0;
bdp->end_char_vcols = 0;
bdp->start_char_vcols = 0;
line = ml_get(lnum);
pstart = line;
prev_pstart = line;
while (bdp->start_vcol < oap->start_vcol && *pstart) {
// Count a tab for what it's worth (if list mode not on)
incr = lbr_chartabsize(line, pstart, bdp->start_vcol);
bdp->start_vcol += incr;
if (ascii_iswhite(*pstart)) {
bdp->pre_whitesp += incr;
bdp->pre_whitesp_c++;
} else {
bdp->pre_whitesp = 0;
bdp->pre_whitesp_c = 0;
}
prev_pstart = pstart;
MB_PTR_ADV(pstart);
}
bdp->start_char_vcols = incr;
if (bdp->start_vcol < oap->start_vcol) { // line too short
bdp->end_vcol = bdp->start_vcol;
bdp->is_short = true;
if (!is_del || oap->op_type == OP_APPEND) {
bdp->endspaces = oap->end_vcol - oap->start_vcol + 1;
}
} else {
// notice: this converts partly selected Multibyte characters to
// spaces, too.
bdp->startspaces = bdp->start_vcol - oap->start_vcol;
if (is_del && bdp->startspaces) {
bdp->startspaces = bdp->start_char_vcols - bdp->startspaces;
}
pend = pstart;
bdp->end_vcol = bdp->start_vcol;
if (bdp->end_vcol > oap->end_vcol) { // it's all in one character
bdp->is_oneChar = true;
if (oap->op_type == OP_INSERT) {
bdp->endspaces = bdp->start_char_vcols - bdp->startspaces;
} else if (oap->op_type == OP_APPEND) {
bdp->startspaces += oap->end_vcol - oap->start_vcol + 1;
bdp->endspaces = bdp->start_char_vcols - bdp->startspaces;
} else {
bdp->startspaces = oap->end_vcol - oap->start_vcol + 1;
if (is_del && oap->op_type != OP_LSHIFT) {
// just putting the sum of those two into
// bdp->startspaces doesn't work for Visual replace,
// so we have to split the tab in two
bdp->startspaces = bdp->start_char_vcols
- (bdp->start_vcol - oap->start_vcol);
bdp->endspaces = bdp->end_vcol - oap->end_vcol - 1;
}
}
} else {
prev_pend = pend;
while (bdp->end_vcol <= oap->end_vcol && *pend != NUL) {
// Count a tab for what it's worth (if list mode not on)
prev_pend = pend;
incr = lbr_chartabsize_adv(line, &pend, bdp->end_vcol);
bdp->end_vcol += incr;
}
if (bdp->end_vcol <= oap->end_vcol
&& (!is_del
|| oap->op_type == OP_APPEND
|| oap->op_type == OP_REPLACE)) { // line too short
bdp->is_short = true;
// Alternative: include spaces to fill up the block.
// Disadvantage: can lead to trailing spaces when the line is
// short where the text is put
// if (!is_del || oap->op_type == OP_APPEND)
if (oap->op_type == OP_APPEND || virtual_op) {
bdp->endspaces = oap->end_vcol - bdp->end_vcol
+ oap->inclusive;
}
} else if (bdp->end_vcol > oap->end_vcol) {
bdp->endspaces = bdp->end_vcol - oap->end_vcol - 1;
if (!is_del && bdp->endspaces) {
bdp->endspaces = incr - bdp->endspaces;
if (pend != pstart) {
pend = prev_pend;
}
}
}
}
bdp->end_char_vcols = incr;
if (is_del && bdp->startspaces) {
pstart = prev_pstart;
}
bdp->textlen = (int)(pend - pstart);
}
bdp->textcol = (colnr_T)(pstart - line);
bdp->textstart = pstart;
curwin->w_p_lbr = lbr_saved;
}
/// Handle the add/subtract operator.
///
/// @param[in] oap Arguments of operator.
/// @param[in] Prenum1 Amount of addition or subtraction.
/// @param[in] g_cmd Prefixed with `g`.
void op_addsub(oparg_T *oap, linenr_T Prenum1, bool g_cmd)
{
pos_T pos;
struct block_def bd;
ssize_t change_cnt = 0;
linenr_T amount = Prenum1;
if (!VIsual_active) {
pos = curwin->w_cursor;
if (u_save_cursor() == FAIL) {
return;
}
change_cnt = do_addsub(oap->op_type, &pos, 0, amount);
if (change_cnt) {
changed_lines(pos.lnum, 0, pos.lnum + 1, 0L, true);
}
} else {
int one_change;
int length;
pos_T startpos;
if (u_save((linenr_T)(oap->start.lnum - 1),
(linenr_T)(oap->end.lnum + 1)) == FAIL) {
return;
}
pos = oap->start;
for (; pos.lnum <= oap->end.lnum; pos.lnum++) {
if (oap->motion_type == kMTBlockWise) {
// Visual block mode
block_prep(oap, &bd, pos.lnum, false);
pos.col = bd.textcol;
length = bd.textlen;
} else if (oap->motion_type == kMTLineWise) {
curwin->w_cursor.col = 0;
pos.col = 0;
length = (colnr_T)STRLEN(ml_get(pos.lnum));
} else {
// oap->motion_type == kMTCharWise
if (pos.lnum == oap->start.lnum && !oap->inclusive) {
dec(&(oap->end));
}
length = (colnr_T)STRLEN(ml_get(pos.lnum));
pos.col = 0;
if (pos.lnum == oap->start.lnum) {
pos.col += oap->start.col;
length -= oap->start.col;
}
if (pos.lnum == oap->end.lnum) {
length = (int)STRLEN(ml_get(oap->end.lnum));
if (oap->end.col >= length) {
oap->end.col = length - 1;
}
length = oap->end.col - pos.col + 1;
}
}
one_change = do_addsub(oap->op_type, &pos, length, amount);
if (one_change) {
// Remember the start position of the first change.
if (change_cnt == 0) {
startpos = curbuf->b_op_start;
}
change_cnt++;
}
if (g_cmd && one_change) {
amount += Prenum1;
}
}
if (change_cnt) {
changed_lines(oap->start.lnum, 0, oap->end.lnum + 1, 0L, true);
}
if (!change_cnt && oap->is_VIsual) {
// No change: need to remove the Visual selection
redraw_curbuf_later(INVERTED);
}
// Set '[ mark if something changed. Keep the last end
// position from do_addsub().
if (change_cnt > 0) {
curbuf->b_op_start = startpos;
}
if (change_cnt > p_report) {
smsg(NGETTEXT("%" PRId64 " lines changed",
"%" PRId64 " lines changed", change_cnt),
(int64_t)change_cnt);
}
}
}
/// Add or subtract from a number in a line.
///
/// @param op_type OP_NR_ADD or OP_NR_SUB.
/// @param pos Cursor position.
/// @param length Target number length.
/// @param Prenum1 Amount of addition or subtraction.
///
/// @return true if some character was changed.
int do_addsub(int op_type, pos_T *pos, int length, linenr_T Prenum1)
{
int col;
char_u *buf1 = NULL;
char_u buf2[NUMBUFLEN];
int pre; // 'X' or 'x': hex; '0': octal; 'B' or 'b': bin
static bool hexupper = false; // 0xABC
uvarnumber_T n;
uvarnumber_T oldn;
char_u *ptr;
int c;
int todel;
int firstdigit;
bool negative = false;
bool was_positive = true;
bool visual = VIsual_active;
bool did_change = false;
pos_T save_cursor = curwin->w_cursor;
int maxlen = 0;
pos_T startpos;
pos_T endpos;
colnr_T save_coladd = 0;
const bool do_hex = vim_strchr(curbuf->b_p_nf, 'x') != NULL; // "heX"
const bool do_oct = vim_strchr(curbuf->b_p_nf, 'o') != NULL; // "Octal"
const bool do_bin = vim_strchr(curbuf->b_p_nf, 'b') != NULL; // "Bin"
const bool do_alpha = vim_strchr(curbuf->b_p_nf, 'p') != NULL; // "alPha"
// "Unsigned"
const bool do_unsigned = vim_strchr(curbuf->b_p_nf, 'u') != NULL;
if (virtual_active()) {
save_coladd = pos->coladd;
pos->coladd = 0;
}
curwin->w_cursor = *pos;
ptr = ml_get(pos->lnum);
col = pos->col;
if (*ptr == NUL || col + !!save_coladd >= (int)STRLEN(ptr)) {
goto theend;
}
// First check if we are on a hexadecimal number, after the "0x".
if (!VIsual_active) {
if (do_bin) {
while (col > 0 && ascii_isbdigit(ptr[col])) {
col--;
col -= utf_head_off(ptr, ptr + col);
}
}
if (do_hex) {
while (col > 0 && ascii_isxdigit(ptr[col])) {
col--;
col -= utf_head_off(ptr, ptr + col);
}
}
if (do_bin
&& do_hex
&& !((col > 0
&& (ptr[col] == 'X' || ptr[col] == 'x')
&& ptr[col - 1] == '0'
&& !utf_head_off(ptr, ptr + col - 1)
&& ascii_isxdigit(ptr[col + 1])))) {
// In case of binary/hexadecimal pattern overlap match, rescan
col = curwin->w_cursor.col;
while (col > 0 && ascii_isdigit(ptr[col])) {
col--;
col -= utf_head_off(ptr, ptr + col);
}
}
if ((do_hex
&& col > 0
&& (ptr[col] == 'X' || ptr[col] == 'x')
&& ptr[col - 1] == '0'
&& !utf_head_off(ptr, ptr + col - 1)
&& ascii_isxdigit(ptr[col + 1]))
|| (do_bin
&& col > 0
&& (ptr[col] == 'B' || ptr[col] == 'b')
&& ptr[col - 1] == '0'
&& !utf_head_off(ptr, ptr + col - 1)
&& ascii_isbdigit(ptr[col + 1]))) {
// Found hexadecimal or binary number, move to its start.
col--;
col -= utf_head_off(ptr, ptr + col);
} else {
// Search forward and then backward to find the start of number.
col = pos->col;
while (ptr[col] != NUL
&& !ascii_isdigit(ptr[col])
&& !(do_alpha && ASCII_ISALPHA(ptr[col]))) {
col++;
}
while (col > 0
&& ascii_isdigit(ptr[col - 1])
&& !(do_alpha && ASCII_ISALPHA(ptr[col]))) {
col--;
}
}
}
if (visual) {
while (ptr[col] != NUL && length > 0 && !ascii_isdigit(ptr[col])
&& !(do_alpha && ASCII_ISALPHA(ptr[col]))) {
int mb_len = utfc_ptr2len(ptr + col);
col += mb_len;
length -= mb_len;
}
if (length == 0) {
goto theend;
}
if (col > pos->col && ptr[col - 1] == '-'
&& !utf_head_off(ptr, ptr + col - 1)
&& !do_unsigned) {
negative = true;
was_positive = false;
}
}
// If a number was found, and saving for undo works, replace the number.
firstdigit = ptr[col];
if (!ascii_isdigit(firstdigit) && !(do_alpha && ASCII_ISALPHA(firstdigit))) {
beep_flush();
goto theend;
}
if (do_alpha && ASCII_ISALPHA(firstdigit)) {
// decrement or increment alphabetic character
if (op_type == OP_NR_SUB) {
if (CharOrd(firstdigit) < Prenum1) {
if (isupper(firstdigit)) {
firstdigit = 'A';
} else {
firstdigit = 'a';
}
} else {
firstdigit -= (int)Prenum1;
}
} else {
if (26 - CharOrd(firstdigit) - 1 < Prenum1) {
if (isupper(firstdigit)) {
firstdigit = 'Z';
} else {
firstdigit = 'z';
}
} else {
firstdigit += (int)Prenum1;
}
}
curwin->w_cursor.col = col;
startpos = curwin->w_cursor;
did_change = true;
(void)del_char(false);
ins_char(firstdigit);
endpos = curwin->w_cursor;
curwin->w_cursor.col = col;
} else {
if (col > 0 && ptr[col - 1] == '-'
&& !utf_head_off(ptr, ptr + col - 1)
&& !visual
&& !do_unsigned) {
// negative number
col--;
negative = true;
}
// get the number value (unsigned)
if (visual && VIsual_mode != 'V') {
maxlen = (curbuf->b_visual.vi_curswant == MAXCOL
? (int)STRLEN(ptr) - col
: length);
}
vim_str2nr(ptr + col, &pre, &length,
0 + (do_bin ? STR2NR_BIN : 0)
+ (do_oct ? STR2NR_OCT : 0)
+ (do_hex ? STR2NR_HEX : 0),
NULL, &n, maxlen, false);
// ignore leading '-' for hex, octal and bin numbers
if (pre && negative) {
col++;
length--;
negative = false;
}
// add or subtract
bool subtract = false;
if (op_type == OP_NR_SUB) {
subtract ^= true;
}
if (negative) {
subtract ^= true;
}
oldn = n;
n = subtract ? n - (uvarnumber_T)Prenum1
: n + (uvarnumber_T)Prenum1;
// handle wraparound for decimal numbers
if (!pre) {
if (subtract) {
if (n > oldn) {
n = 1 + (n ^ (uvarnumber_T)-1);
negative ^= true;
}
} else {
// add
if (n < oldn) {
n = (n ^ (uvarnumber_T)-1);
negative ^= true;
}
}
if (n == 0) {
negative = false;
}
}
if (do_unsigned && negative) {
if (subtract) {
// sticking at zero.
n = (uvarnumber_T)0;
} else {
// sticking at 2^64 - 1.
n = (uvarnumber_T)(-1);
}
negative = false;
}
if (visual && !was_positive && !negative && col > 0) {
// need to remove the '-'
col--;
length++;
}
// Delete the old number.
curwin->w_cursor.col = col;
startpos = curwin->w_cursor;
did_change = true;
todel = length;
c = gchar_cursor();
// Don't include the '-' in the length, only the length of the part
// after it is kept the same.
if (c == '-') {
length--;
}
while (todel-- > 0) {
if (c < 0x100 && isalpha(c)) {
if (isupper(c)) {
hexupper = true;
} else {
hexupper = false;
}
}
// del_char() will mark line needing displaying
(void)del_char(false);
c = gchar_cursor();
}
// Prepare the leading characters in buf1[].
// When there are many leading zeros it could be very long.
// Allocate a bit too much.
buf1 = xmalloc((size_t)length + NUMBUFLEN);
ptr = buf1;
if (negative && (!visual || was_positive)) {
*ptr++ = '-';
}
if (pre) {
*ptr++ = '0';
length--;
}
if (pre == 'b' || pre == 'B' || pre == 'x' || pre == 'X') {
*ptr++ = (char_u)pre;
length--;
}
// Put the number characters in buf2[].
if (pre == 'b' || pre == 'B') {
size_t bits = 0;
size_t i = 0;
// leading zeros
for (bits = 8 * sizeof(n); bits > 0; bits--) {
if ((n >> (bits - 1)) & 0x1) {
break;
}
}
while (bits > 0) {
buf2[i++] = ((n >> --bits) & 0x1) ? '1' : '0';
}
buf2[i] = '\0';
} else if (pre == 0) {
vim_snprintf((char *)buf2, ARRAY_SIZE(buf2), "%" PRIu64, (uint64_t)n);
} else if (pre == '0') {
vim_snprintf((char *)buf2, ARRAY_SIZE(buf2), "%" PRIo64, (uint64_t)n);
} else if (hexupper) {
vim_snprintf((char *)buf2, ARRAY_SIZE(buf2), "%" PRIX64, (uint64_t)n);
} else {
vim_snprintf((char *)buf2, ARRAY_SIZE(buf2), "%" PRIx64, (uint64_t)n);
}
length -= (int)STRLEN(buf2);
// Adjust number of zeros to the new number of digits, so the
// total length of the number remains the same.
// Don't do this when
// the result may look like an octal number.
if (firstdigit == '0' && !(do_oct && pre == 0)) {
while (length-- > 0) {
*ptr++ = '0';
}
}
*ptr = NUL;
STRCAT(buf1, buf2);
ins_str(buf1); // insert the new number
endpos = curwin->w_cursor;
if (curwin->w_cursor.col) {
curwin->w_cursor.col--;
}
}
// set the '[ and '] marks
curbuf->b_op_start = startpos;
curbuf->b_op_end = endpos;
if (curbuf->b_op_end.col > 0) {
curbuf->b_op_end.col--;
}
theend:
xfree(buf1);
if (visual) {
curwin->w_cursor = save_cursor;
} else if (did_change) {
curwin->w_set_curswant = true;
} else if (virtual_active()) {
curwin->w_cursor.coladd = save_coladd;
}
return did_change;
}
/*
* Return the type of a register.
* Used for getregtype()
* Returns kMTUnknown for error.
*/
MotionType get_reg_type(int regname, colnr_T *reg_width)
{
switch (regname) {
case '%': // file name
case '#': // alternate file name
case '=': // expression
case ':': // last command line
case '/': // last search-pattern
case '.': // last inserted text
case Ctrl_F: // Filename under cursor
case Ctrl_P: // Path under cursor, expand via "path"
case Ctrl_W: // word under cursor
case Ctrl_A: // WORD (mnemonic All) under cursor
case '_': // black hole: always empty
return kMTCharWise;
}
if (regname != NUL && !valid_yank_reg(regname, false)) {
return kMTUnknown;
}
yankreg_T *reg = get_yank_register(regname, YREG_PASTE);
if (reg->y_array != NULL) {
if (reg_width != NULL && reg->y_type == kMTBlockWise) {
*reg_width = reg->y_width;
}
return reg->y_type;
}
return kMTUnknown;
}
/// Format the register type as a string.
///
/// @param reg_type The register type.
/// @param reg_width The width, only used if "reg_type" is kMTBlockWise.
/// @param[out] buf Buffer to store formatted string. The allocated size should
/// be at least NUMBUFLEN+2 to always fit the value.
/// @param buf_len The allocated size of the buffer.
void format_reg_type(MotionType reg_type, colnr_T reg_width, char *buf, size_t buf_len)
FUNC_ATTR_NONNULL_ALL
{
assert(buf_len > 1);
switch (reg_type) {
case kMTLineWise:
buf[0] = 'V';
buf[1] = NUL;
break;
case kMTCharWise:
buf[0] = 'v';
buf[1] = NUL;
break;
case kMTBlockWise:
snprintf(buf, buf_len, CTRL_V_STR "%" PRIdCOLNR, reg_width + 1);
break;
case kMTUnknown:
buf[0] = NUL;
break;
}
}
/// When `flags` has `kGRegList` return a list with text `s`.
/// Otherwise just return `s`.
///
/// Returns a void * for use in get_reg_contents().
static void *get_reg_wrap_one_line(char_u *s, int flags)
{
if (!(flags & kGRegList)) {
return s;
}
list_T *const list = tv_list_alloc(1);
tv_list_append_allocated_string(list, (char *)s);
return list;
}
/// Gets the contents of a register.
/// @remark Used for `@r` in expressions and for `getreg()`.
///
/// @param regname The register.
/// @param flags see @ref GRegFlags
///
/// @returns The contents of the register as an allocated string.
/// @returns A linked list when `flags` contains @ref kGRegList.
/// @returns NULL for error.
void *get_reg_contents(int regname, int flags)
{
// Don't allow using an expression register inside an expression.
if (regname == '=') {
if (flags & kGRegNoExpr) {
return NULL;
}
if (flags & kGRegExprSrc) {
return get_reg_wrap_one_line(get_expr_line_src(), flags);
}
return get_reg_wrap_one_line(get_expr_line(), flags);
}
if (regname == '@') { // "@@" is used for unnamed register
regname = '"';
}
// check for valid regname
if (regname != NUL && !valid_yank_reg(regname, false)) {
return NULL;
}
char_u *retval;
bool allocated;
if (get_spec_reg(regname, &retval, &allocated, false)) {
if (retval == NULL) {
return NULL;
}
if (allocated) {
return get_reg_wrap_one_line(retval, flags);
}
return get_reg_wrap_one_line(vim_strsave(retval), flags);
}
yankreg_T *reg = get_yank_register(regname, YREG_PASTE);
if (reg->y_array == NULL) {
return NULL;
}
if (flags & kGRegList) {
list_T *const list = tv_list_alloc((ptrdiff_t)reg->y_size);
for (size_t i = 0; i < reg->y_size; i++) {
tv_list_append_string(list, (const char *)reg->y_array[i], -1);
}
return list;
}
/*
* Compute length of resulting string.
*/
size_t len = 0;
for (size_t i = 0; i < reg->y_size; i++) {
len += STRLEN(reg->y_array[i]);
/*
* Insert a newline between lines and after last line if
* y_type is kMTLineWise.
*/
if (reg->y_type == kMTLineWise || i < reg->y_size - 1) {
len++;
}
}
retval = xmalloc(len + 1);
/*
* Copy the lines of the yank register into the string.
*/
len = 0;
for (size_t i = 0; i < reg->y_size; i++) {
STRCPY(retval + len, reg->y_array[i]);
len += STRLEN(retval + len);
/*
* Insert a NL between lines and after the last line if y_type is
* kMTLineWise.
*/
if (reg->y_type == kMTLineWise || i < reg->y_size - 1) {
retval[len++] = '\n';
}
}
retval[len] = NUL;
return retval;
}
static yankreg_T *init_write_reg(int name, yankreg_T **old_y_previous, bool must_append)
{
if (!valid_yank_reg(name, true)) { // check for valid reg name
emsg_invreg(name);
return NULL;
}
// Don't want to change the current (unnamed) register.
*old_y_previous = y_previous;
yankreg_T *reg = get_yank_register(name, YREG_YANK);
if (!is_append_register(name) && !must_append) {
free_register(reg);
}
return reg;
}
static void finish_write_reg(int name, yankreg_T *reg, yankreg_T *old_y_previous)
{
// Send text of clipboard register to the clipboard.
set_clipboard(name, reg);
// ':let @" = "val"' should change the meaning of the "" register
if (name != '"') {
y_previous = old_y_previous;
}
}
/// write_reg_contents - store `str` in register `name`
///
/// @see write_reg_contents_ex
void write_reg_contents(int name, const char_u *str, ssize_t len, int must_append)
{
write_reg_contents_ex(name, str, len, must_append, kMTUnknown, 0L);
}
void write_reg_contents_lst(int name, char_u **strings, bool must_append, MotionType yank_type,
colnr_T block_len)
{
if (name == '/' || name == '=') {
char_u *s = strings[0];
if (strings[0] == NULL) {
s = (char_u *)"";
} else if (strings[1] != NULL) {
emsg(_("E883: search pattern and expression register may not "
"contain two or more lines"));
return;
}
write_reg_contents_ex(name, s, -1, must_append, yank_type, block_len);
return;
}
// black hole: nothing to do
if (name == '_') {
return;
}
yankreg_T *old_y_previous, *reg;
if (!(reg = init_write_reg(name, &old_y_previous, must_append))) {
return;
}
str_to_reg(reg, yank_type, (char_u *)strings, STRLEN((char_u *)strings),
block_len, true);
finish_write_reg(name, reg, old_y_previous);
}
/// write_reg_contents_ex - store `str` in register `name`
///
/// If `str` ends in '\n' or '\r', use linewise, otherwise use charwise.
///
/// @warning when `name` is '/', `len` and `must_append` are ignored. This
/// means that `str` MUST be NUL-terminated.
///
/// @param name The name of the register
/// @param str The contents to write
/// @param len If >= 0, write `len` bytes of `str`. Otherwise, write
/// `strlen(str)` bytes. If `len` is larger than the
/// allocated size of `src`, the behaviour is undefined.
/// @param must_append If true, append the contents of `str` to the current
/// contents of the register. Note that regardless of
/// `must_append`, this function will append when `name`
/// is an uppercase letter.
/// @param yank_type The motion type (kMTUnknown to auto detect)
/// @param block_len width of visual block
void write_reg_contents_ex(int name, const char_u *str, ssize_t len, bool must_append,
MotionType yank_type, colnr_T block_len)
{
if (len < 0) {
len = (ssize_t)STRLEN(str);
}
// Special case: '/' search pattern
if (name == '/') {
set_last_search_pat(str, RE_SEARCH, TRUE, TRUE);
return;
}
if (name == '#') {
buf_T *buf;
if (ascii_isdigit(*str)) {
int num = atoi((char *)str);
buf = buflist_findnr(num);
if (buf == NULL) {
semsg(_(e_nobufnr), (int64_t)num);
}
} else {
buf = buflist_findnr(buflist_findpat(str, str + STRLEN(str),
true, false, false));
}
if (buf == NULL) {
return;
}
curwin->w_alt_fnum = buf->b_fnum;
return;
}
if (name == '=') {
size_t offset = 0;
size_t totlen = (size_t)len;
if (must_append && expr_line) {
// append has been specified and expr_line already exists, so we'll
// append the new string to expr_line.
size_t exprlen = STRLEN(expr_line);
totlen += exprlen;
offset = exprlen;
}
// modify the global expr_line, extend/shrink it if necessary (realloc).
// Copy the input string into the adjusted memory at the specified
// offset.
expr_line = xrealloc(expr_line, totlen + 1);
memcpy(expr_line + offset, str, (size_t)len);
expr_line[totlen] = NUL;
return;
}
if (name == '_') { // black hole: nothing to do
return;
}
yankreg_T *old_y_previous, *reg;
if (!(reg = init_write_reg(name, &old_y_previous, must_append))) {
return;
}
str_to_reg(reg, yank_type, str, (size_t)len, block_len, false);
finish_write_reg(name, reg, old_y_previous);
}
/// str_to_reg - Put a string into a register.
///
/// When the register is not empty, the string is appended.
///
/// @param y_ptr pointer to yank register
/// @param yank_type The motion type (kMTUnknown to auto detect)
/// @param str string or list of strings to put in register
/// @param len length of the string (Ignored when str_list=true.)
/// @param blocklen width of visual block, or -1 for "I don't know."
/// @param str_list True if str is `char_u **`.
static void str_to_reg(yankreg_T *y_ptr, MotionType yank_type, const char_u *str, size_t len,
colnr_T blocklen, bool str_list)
FUNC_ATTR_NONNULL_ALL
{
if (y_ptr->y_array == NULL) { // NULL means empty register
y_ptr->y_size = 0;
}
if (yank_type == kMTUnknown) {
yank_type = ((str_list
|| (len > 0 && (str[len - 1] == NL || str[len - 1] == CAR)))
? kMTLineWise : kMTCharWise);
}
size_t newlines = 0;
bool extraline = false; // extra line at the end
bool append = false; // append to last line in register
// Count the number of lines within the string
if (str_list) {
for (char_u **ss = (char_u **)str; *ss != NULL; ++ss) {
newlines++;
}
} else {
newlines = memcnt(str, '\n', len);
if (yank_type == kMTCharWise || len == 0 || str[len - 1] != '\n') {
extraline = 1;
++newlines; // count extra newline at the end
}
if (y_ptr->y_size > 0 && y_ptr->y_type == kMTCharWise) {
append = true;
--newlines; // uncount newline when appending first line
}
}
// Without any lines make the register empty.
if (y_ptr->y_size + newlines == 0) {
XFREE_CLEAR(y_ptr->y_array);
return;
}
// Grow the register array to hold the pointers to the new lines.
char_u **pp = xrealloc(y_ptr->y_array,
(y_ptr->y_size + newlines) * sizeof(char_u *));
y_ptr->y_array = pp;
size_t lnum = y_ptr->y_size; // The current line number.
// If called with `blocklen < 0`, we have to update the yank reg's width.
size_t maxlen = 0;
// Find the end of each line and save it into the array.
if (str_list) {
for (char_u **ss = (char_u **)str; *ss != NULL; ++ss, ++lnum) {
size_t ss_len = STRLEN(*ss);
pp[lnum] = xmemdupz(*ss, ss_len);
if (ss_len > maxlen) {
maxlen = ss_len;
}
}
} else {
size_t line_len;
for (const char_u *start = str, *end = str + len;
start < end + extraline;
start += line_len + 1, lnum++) {
assert(end - start >= 0);
line_len = (size_t)((char_u *)xmemscan(start, '\n',
(size_t)(end - start)) - start);
if (line_len > maxlen) {
maxlen = line_len;
}
// When appending, copy the previous line and free it after.
size_t extra = append ? STRLEN(pp[--lnum]) : 0;
char_u *s = xmallocz(line_len + extra);
memcpy(s, pp[lnum], extra);
memcpy(s + extra, start, line_len);
size_t s_len = extra + line_len;
if (append) {
xfree(pp[lnum]);
append = false; // only first line is appended
}
pp[lnum] = s;
// Convert NULs to '\n' to prevent truncation.
memchrsub(pp[lnum], NUL, '\n', s_len);
}
}
y_ptr->y_type = yank_type;
y_ptr->y_size = lnum;
set_yreg_additional_data(y_ptr, NULL);
y_ptr->timestamp = os_time();
if (yank_type == kMTBlockWise) {
y_ptr->y_width = (blocklen == -1 ? (colnr_T)maxlen - 1 : blocklen);
} else {
y_ptr->y_width = 0;
}
}
void clear_oparg(oparg_T *oap)
{
memset(oap, 0, sizeof(oparg_T));
}
/*
* Count the number of bytes, characters and "words" in a line.
*
* "Words" are counted by looking for boundaries between non-space and
* space characters. (it seems to produce results that match 'wc'.)
*
* Return value is byte count; word count for the line is added to "*wc".
* Char count is added to "*cc".
*
* The function will only examine the first "limit" characters in the
* line, stopping if it encounters an end-of-line (NUL byte). In that
* case, eol_size will be added to the character count to account for
* the size of the EOL character.
*/
static varnumber_T line_count_info(char_u *line, varnumber_T *wc, varnumber_T *cc,
varnumber_T limit, int eol_size)
{
varnumber_T i;
varnumber_T words = 0;
varnumber_T chars = 0;
int is_word = 0;
for (i = 0; i < limit && line[i] != NUL; ) {
if (is_word) {
if (ascii_isspace(line[i])) {
words++;
is_word = 0;
}
} else if (!ascii_isspace(line[i])) {
is_word = 1;
}
chars++;
i += utfc_ptr2len(line + i);
}
if (is_word) {
words++;
}
*wc += words;
// Add eol_size if the end of line was reached before hitting limit.
if (i < limit && line[i] == NUL) {
i += eol_size;
chars += eol_size;
}
*cc += chars;
return i;
}
/// Give some info about the position of the cursor (for "g CTRL-G").
/// In Visual mode, give some info about the selected region. (In this case,
/// the *_count_cursor variables store running totals for the selection.)
/// When "dict" is not NULL store the info there instead of showing it.
void cursor_pos_info(dict_T *dict)
{
char_u *p;
char_u buf1[50];
char_u buf2[40];
linenr_T lnum;
varnumber_T byte_count = 0;
varnumber_T bom_count = 0;
varnumber_T byte_count_cursor = 0;
varnumber_T char_count = 0;
varnumber_T char_count_cursor = 0;
varnumber_T word_count = 0;
varnumber_T word_count_cursor = 0;
int eol_size;
varnumber_T last_check = 100000L;
long line_count_selected = 0;
pos_T min_pos, max_pos;
oparg_T oparg;
struct block_def bd;
const int l_VIsual_active = VIsual_active;
const int l_VIsual_mode = VIsual_mode;
// Compute the length of the file in characters.
if (curbuf->b_ml.ml_flags & ML_EMPTY) {
if (dict == NULL) {
msg(_(no_lines_msg));
return;
}
} else {
if (get_fileformat(curbuf) == EOL_DOS) {
eol_size = 2;
} else {
eol_size = 1;
}
if (l_VIsual_active) {
if (lt(VIsual, curwin->w_cursor)) {
min_pos = VIsual;
max_pos = curwin->w_cursor;
} else {
min_pos = curwin->w_cursor;
max_pos = VIsual;
}
if (*p_sel == 'e' && max_pos.col > 0) {
--max_pos.col;
}
if (l_VIsual_mode == Ctrl_V) {
char_u *const saved_sbr = p_sbr;
char_u *const saved_w_sbr = curwin->w_p_sbr;
// Make 'sbr' empty for a moment to get the correct size.
p_sbr = empty_option;
curwin->w_p_sbr = empty_option;
oparg.is_VIsual = true;
oparg.motion_type = kMTBlockWise;
oparg.op_type = OP_NOP;
getvcols(curwin, &min_pos, &max_pos,
&oparg.start_vcol, &oparg.end_vcol);
p_sbr = saved_sbr;
curwin->w_p_sbr = saved_w_sbr;
if (curwin->w_curswant == MAXCOL) {
oparg.end_vcol = MAXCOL;
}
// Swap the start, end vcol if needed
if (oparg.end_vcol < oparg.start_vcol) {
oparg.end_vcol += oparg.start_vcol;
oparg.start_vcol = oparg.end_vcol - oparg.start_vcol;
oparg.end_vcol -= oparg.start_vcol;
}
}
line_count_selected = max_pos.lnum - min_pos.lnum + 1;
}
for (lnum = 1; lnum <= curbuf->b_ml.ml_line_count; ++lnum) {
// Check for a CTRL-C every 100000 characters.
if (byte_count > last_check) {
os_breakcheck();
if (got_int) {
return;
}
last_check = byte_count + 100000L;
}
// Do extra processing for VIsual mode.
if (l_VIsual_active
&& lnum >= min_pos.lnum && lnum <= max_pos.lnum) {
char_u *s = NULL;
long len = 0L;
switch (l_VIsual_mode) {
case Ctrl_V:
virtual_op = virtual_active();
block_prep(&oparg, &bd, lnum, false);
virtual_op = kNone;
s = bd.textstart;
len = (long)bd.textlen;
break;
case 'V':
s = ml_get(lnum);
len = MAXCOL;
break;
case 'v': {
colnr_T start_col = (lnum == min_pos.lnum)
? min_pos.col : 0;
colnr_T end_col = (lnum == max_pos.lnum)
? max_pos.col - start_col + 1 : MAXCOL;
s = ml_get(lnum) + start_col;
len = end_col;
}
break;
}
if (s != NULL) {
byte_count_cursor += line_count_info(s, &word_count_cursor,
&char_count_cursor, len, eol_size);
if (lnum == curbuf->b_ml.ml_line_count
&& !curbuf->b_p_eol
&& (curbuf->b_p_bin || !curbuf->b_p_fixeol)
&& (long)STRLEN(s) < len) {
byte_count_cursor -= eol_size;
}
}
} else {
// In non-visual mode, check for the line the cursor is on
if (lnum == curwin->w_cursor.lnum) {
word_count_cursor += word_count;
char_count_cursor += char_count;
byte_count_cursor = byte_count
+ line_count_info(ml_get(lnum), &word_count_cursor,
&char_count_cursor,
(varnumber_T)curwin->w_cursor.col + 1,
eol_size);
}
}
// Add to the running totals
byte_count += line_count_info(ml_get(lnum), &word_count, &char_count,
(varnumber_T)MAXCOL, eol_size);
}
// Correction for when last line doesn't have an EOL.
if (!curbuf->b_p_eol && (curbuf->b_p_bin || !curbuf->b_p_fixeol)) {
byte_count -= eol_size;
}
if (dict == NULL) {
if (l_VIsual_active) {
if (l_VIsual_mode == Ctrl_V && curwin->w_curswant < MAXCOL) {
getvcols(curwin, &min_pos, &max_pos, &min_pos.col, &max_pos.col);
int64_t cols;
STRICT_SUB(oparg.end_vcol + 1, oparg.start_vcol, &cols, int64_t);
vim_snprintf((char *)buf1, sizeof(buf1), _("%" PRId64 " Cols; "),
cols);
} else {
buf1[0] = NUL;
}
if (char_count_cursor == byte_count_cursor
&& char_count == byte_count) {
vim_snprintf((char *)IObuff, IOSIZE,
_("Selected %s%" PRId64 " of %" PRId64 " Lines;"
" %" PRId64 " of %" PRId64 " Words;"
" %" PRId64 " of %" PRId64 " Bytes"),
buf1, (int64_t)line_count_selected,
(int64_t)curbuf->b_ml.ml_line_count,
(int64_t)word_count_cursor, (int64_t)word_count,
(int64_t)byte_count_cursor, (int64_t)byte_count);
} else {
vim_snprintf((char *)IObuff, IOSIZE,
_("Selected %s%" PRId64 " of %" PRId64 " Lines;"
" %" PRId64 " of %" PRId64 " Words;"
" %" PRId64 " of %" PRId64 " Chars;"
" %" PRId64 " of %" PRId64 " Bytes"),
buf1, (int64_t)line_count_selected,
(int64_t)curbuf->b_ml.ml_line_count,
(int64_t)word_count_cursor, (int64_t)word_count,
(int64_t)char_count_cursor, (int64_t)char_count,
(int64_t)byte_count_cursor, (int64_t)byte_count);
}
} else {
p = get_cursor_line_ptr();
validate_virtcol();
col_print(buf1, sizeof(buf1), (int)curwin->w_cursor.col + 1,
(int)curwin->w_virtcol + 1);
col_print(buf2, sizeof(buf2), (int)STRLEN(p), linetabsize(p));
if (char_count_cursor == byte_count_cursor
&& char_count == byte_count) {
vim_snprintf((char *)IObuff, IOSIZE,
_("Col %s of %s; Line %" PRId64 " of %" PRId64 ";"
" Word %" PRId64 " of %" PRId64 ";"
" Byte %" PRId64 " of %" PRId64 ""),
(char *)buf1, (char *)buf2,
(int64_t)curwin->w_cursor.lnum,
(int64_t)curbuf->b_ml.ml_line_count,
(int64_t)word_count_cursor, (int64_t)word_count,
(int64_t)byte_count_cursor, (int64_t)byte_count);
} else {
vim_snprintf((char *)IObuff, IOSIZE,
_("Col %s of %s; Line %" PRId64 " of %" PRId64 ";"
" Word %" PRId64 " of %" PRId64 ";"
" Char %" PRId64 " of %" PRId64 ";"
" Byte %" PRId64 " of %" PRId64 ""),
(char *)buf1, (char *)buf2,
(int64_t)curwin->w_cursor.lnum,
(int64_t)curbuf->b_ml.ml_line_count,
(int64_t)word_count_cursor, (int64_t)word_count,
(int64_t)char_count_cursor, (int64_t)char_count,
(int64_t)byte_count_cursor, (int64_t)byte_count);
}
}
}
bom_count = bomb_size();
if (dict == NULL && bom_count > 0) {
const size_t len = STRLEN(IObuff);
vim_snprintf((char *)IObuff + len, IOSIZE - len,
_("(+%" PRId64 " for BOM)"), (int64_t)bom_count);
}
if (dict == NULL) {
// Don't shorten this message, the user asked for it.
p = p_shm;
p_shm = (char_u *)"";
msg((char *)IObuff);
p_shm = p;
}
}
if (dict != NULL) {
// Don't shorten this message, the user asked for it.
tv_dict_add_nr(dict, S_LEN("words"), word_count);
tv_dict_add_nr(dict, S_LEN("chars"), char_count);
tv_dict_add_nr(dict, S_LEN("bytes"), (varnumber_T)(byte_count + bom_count));
STATIC_ASSERT(sizeof("visual") == sizeof("cursor"),
"key_len argument in tv_dict_add_nr is wrong");
tv_dict_add_nr(dict, l_VIsual_active ? "visual_bytes" : "cursor_bytes",
sizeof("visual_bytes") - 1, byte_count_cursor);
tv_dict_add_nr(dict, l_VIsual_active ? "visual_chars" : "cursor_chars",
sizeof("visual_chars") - 1, char_count_cursor);
tv_dict_add_nr(dict, l_VIsual_active ? "visual_words" : "cursor_words",
sizeof("visual_words") - 1, word_count_cursor);
}
}
/// Check if the default register (used in an unnamed paste) should be a
/// clipboard register. This happens when `clipboard=unnamed[plus]` is set
/// and a provider is available.
///
/// @returns the name of of a clipboard register that should be used, or `NUL` if none.
int get_default_register_name(void)
{
int name = NUL;
adjust_clipboard_name(&name, true, false);
return name;
}
/// Determine if register `*name` should be used as a clipboard.
/// In an unnamed operation, `*name` is `NUL` and will be adjusted to */+ if
/// `clipboard=unnamed[plus]` is set.
///
/// @param name The name of register, or `NUL` if unnamed.
/// @param quiet Suppress error messages
/// @param writing if we're setting the contents of the clipboard
///
/// @returns the yankreg that should be written into, or `NULL`
/// if the register isn't a clipboard or provider isn't available.
static yankreg_T *adjust_clipboard_name(int *name, bool quiet, bool writing)
{
#define MSG_NO_CLIP "clipboard: No provider. " \
"Try \":checkhealth\" or \":h clipboard\"."
yankreg_T *target = NULL;
bool explicit_cb_reg = (*name == '*' || *name == '+');
bool implicit_cb_reg = (*name == NUL) && (cb_flags & CB_UNNAMEDMASK);
if (!explicit_cb_reg && !implicit_cb_reg) {
goto end;
}
if (!eval_has_provider("clipboard")) {
if (batch_change_count == 1 && !quiet
&& (!clipboard_didwarn || (explicit_cb_reg && !redirecting()))) {
clipboard_didwarn = true;
// Do NOT error (emsg()) here--if it interrupts :redir we get into
// a weird state, stuck in "redirect mode".
msg(MSG_NO_CLIP);
}
// ... else, be silent (don't flood during :while, :redir, etc.).
goto end;
}
if (explicit_cb_reg) {
target = &y_regs[*name == '*' ? STAR_REGISTER : PLUS_REGISTER];
if (writing && (cb_flags & (*name == '*' ? CB_UNNAMED : CB_UNNAMEDPLUS))) {
clipboard_needs_update = false;
}
goto end;
} else { // unnamed register: "implicit" clipboard
if (writing && clipboard_delay_update) {
// For "set" (copy), defer the clipboard call.
clipboard_needs_update = true;
goto end;
} else if (!writing && clipboard_needs_update) {
// For "get" (paste), use the internal value.
goto end;
}
if (cb_flags & CB_UNNAMEDPLUS) {
*name = (cb_flags & CB_UNNAMED && writing) ? '"': '+';
target = &y_regs[PLUS_REGISTER];
} else {
*name = '*';
target = &y_regs[STAR_REGISTER];
}
goto end;
}
end:
return target;
}
/// @param[out] reg Expected to be empty
bool prepare_yankreg_from_object(yankreg_T *reg, String regtype, size_t lines)
{
char type = regtype.data ? regtype.data[0] : NUL;
switch (type) {
case 0:
reg->y_type = kMTUnknown;
break;
case 'v':
case 'c':
reg->y_type = kMTCharWise;
break;
case 'V':
case 'l':
reg->y_type = kMTLineWise;
break;
case 'b':
case Ctrl_V:
reg->y_type = kMTBlockWise;
break;
default:
return false;
}
reg->y_width = 0;
if (regtype.size > 1) {
if (reg->y_type != kMTBlockWise) {
return false;
}
// allow "b7" for a block at least 7 spaces wide
if (!ascii_isdigit(regtype.data[1])) {
return false;
}
const char *p = regtype.data+1;
reg->y_width = getdigits_int((char_u **)&p, false, 1) - 1;
if (regtype.size > (size_t)(p-regtype.data)) {
return false;
}
}
reg->y_array = xcalloc(lines, sizeof(uint8_t *));
reg->y_size = lines;
reg->additional_data = NULL;
reg->timestamp = 0;
return true;
}
void finish_yankreg_from_object(yankreg_T *reg, bool clipboard_adjust)
{
if (reg->y_size > 0 && STRLEN(reg->y_array[reg->y_size-1]) == 0) {
// a known-to-be charwise yank might have a final linebreak
// but otherwise there is no line after the final newline
if (reg->y_type != kMTCharWise) {
if (reg->y_type == kMTUnknown || clipboard_adjust) {
xfree(reg->y_array[reg->y_size-1]);
reg->y_size--;
}
if (reg->y_type == kMTUnknown) {
reg->y_type = kMTLineWise;
}
}
} else {
if (reg->y_type == kMTUnknown) {
reg->y_type = kMTCharWise;
}
}
if (reg->y_type == kMTBlockWise) {
size_t maxlen = 0;
for (size_t i = 0; i < reg->y_size; i++) {
size_t rowlen = STRLEN(reg->y_array[i]);
if (rowlen > maxlen) {
maxlen = rowlen;
}
}
assert(maxlen <= INT_MAX);
reg->y_width = MAX(reg->y_width, (int)maxlen - 1);
}
}
static bool get_clipboard(int name, yankreg_T **target, bool quiet)
{
// show message on error
bool errmsg = true;
yankreg_T *reg = adjust_clipboard_name(&name, quiet, false);
if (reg == NULL) {
return false;
}
free_register(reg);
list_T *const args = tv_list_alloc(1);
const char regname = (char)name;
tv_list_append_string(args, &regname, 1);
typval_T result = eval_call_provider("clipboard", "get", args, false);
if (result.v_type != VAR_LIST) {
if (result.v_type == VAR_NUMBER && result.vval.v_number == 0) {
// failure has already been indicated by provider
errmsg = false;
}
goto err;
}
list_T *res = result.vval.v_list;
list_T *lines = NULL;
if (tv_list_len(res) == 2
&& TV_LIST_ITEM_TV(tv_list_first(res))->v_type == VAR_LIST) {
lines = TV_LIST_ITEM_TV(tv_list_first(res))->vval.v_list;
if (TV_LIST_ITEM_TV(tv_list_last(res))->v_type != VAR_STRING) {
goto err;
}
char_u *regtype = TV_LIST_ITEM_TV(tv_list_last(res))->vval.v_string;
if (regtype == NULL || STRLEN(regtype) > 1) {
goto err;
}
switch (regtype[0]) {
case 0:
reg->y_type = kMTUnknown;
break;
case 'v':
case 'c':
reg->y_type = kMTCharWise;
break;
case 'V':
case 'l':
reg->y_type = kMTLineWise;
break;
case 'b':
case Ctrl_V:
reg->y_type = kMTBlockWise;
break;
default:
goto err;
}
} else {
lines = res;
// provider did not specify regtype, calculate it below
reg->y_type = kMTUnknown;
}
reg->y_array = xcalloc((size_t)tv_list_len(lines), sizeof(char_u *));
reg->y_size = (size_t)tv_list_len(lines);
reg->additional_data = NULL;
reg->timestamp = 0;
// Timestamp is not saved for clipboard registers because clipboard registers
// are not saved in the ShaDa file.
size_t tv_idx = 0;
TV_LIST_ITER_CONST(lines, li, {
if (TV_LIST_ITEM_TV(li)->v_type != VAR_STRING) {
goto err;
}
reg->y_array[tv_idx++] = (char_u *)xstrdupnul((const char *)TV_LIST_ITEM_TV(li)->vval.v_string);
});
if (reg->y_size > 0 && STRLEN(reg->y_array[reg->y_size-1]) == 0) {
// a known-to-be charwise yank might have a final linebreak
// but otherwise there is no line after the final newline
if (reg->y_type != kMTCharWise) {
xfree(reg->y_array[reg->y_size-1]);
reg->y_size--;
if (reg->y_type == kMTUnknown) {
reg->y_type = kMTLineWise;
}
}
} else {
if (reg->y_type == kMTUnknown) {
reg->y_type = kMTCharWise;
}
}
if (reg->y_type == kMTBlockWise) {
size_t maxlen = 0;
for (size_t i = 0; i < reg->y_size; i++) {
size_t rowlen = STRLEN(reg->y_array[i]);
if (rowlen > maxlen) {
maxlen = rowlen;
}
}
assert(maxlen <= INT_MAX);
reg->y_width = (int)maxlen - 1;
}
*target = reg;
return true;
err:
if (reg->y_array) {
for (size_t i = 0; i < reg->y_size; i++) {
xfree(reg->y_array[i]);
}
xfree(reg->y_array);
}
reg->y_array = NULL;
reg->y_size = 0;
reg->additional_data = NULL;
reg->timestamp = 0;
if (errmsg) {
emsg("clipboard: provider returned invalid data");
}
*target = reg;
return false;
}
static void set_clipboard(int name, yankreg_T *reg)
{
if (!adjust_clipboard_name(&name, false, true)) {
return;
}
list_T *const lines = tv_list_alloc((ptrdiff_t)reg->y_size + (reg->y_type != kMTCharWise));
for (size_t i = 0; i < reg->y_size; i++) {
tv_list_append_string(lines, (const char *)reg->y_array[i], -1);
}
char regtype;
switch (reg->y_type) {
case kMTLineWise:
regtype = 'V';
tv_list_append_string(lines, NULL, 0);
break;
case kMTCharWise:
regtype = 'v';
break;
case kMTBlockWise:
regtype = 'b';
tv_list_append_string(lines, NULL, 0);
break;
case kMTUnknown:
abort();
}
list_T *args = tv_list_alloc(3);
tv_list_append_list(args, lines);
tv_list_append_string(args, &regtype, 1); // -V614
tv_list_append_string(args, ((char[]) { (char)name }), 1);
(void)eval_call_provider("clipboard", "set", args, true);
}
/// Avoid slow things (clipboard) during batch operations (while/for-loops).
void start_batch_changes(void)
{
if (++batch_change_count > 1) {
return;
}
clipboard_delay_update = true;
}
/// Counterpart to start_batch_changes().
void end_batch_changes(void)
{
if (--batch_change_count > 0) {
// recursive
return;
}
clipboard_delay_update = false;
if (clipboard_needs_update) {
// must be before, as set_clipboard will invoke
// start/end_batch_changes recursively
clipboard_needs_update = false;
// unnamed ("implicit" clipboard)
set_clipboard(NUL, y_previous);
}
}
int save_batch_count(void)
{
int save_count = batch_change_count;
batch_change_count = 0;
clipboard_delay_update = false;
if (clipboard_needs_update) {
clipboard_needs_update = false;
// unnamed ("implicit" clipboard)
set_clipboard(NUL, y_previous);
}
return save_count;
}
void restore_batch_count(int save_count)
{
assert(batch_change_count == 0);
batch_change_count = save_count;
if (batch_change_count > 0) {
clipboard_delay_update = true;
}
}
/// Check whether register is empty
static inline bool reg_empty(const yankreg_T *const reg)
FUNC_ATTR_PURE
{
return (reg->y_array == NULL
|| reg->y_size == 0
|| (reg->y_size == 1
&& reg->y_type == kMTCharWise
&& *(reg->y_array[0]) == NUL));
}
/// Iterate over global registers.
///
/// @see op_register_iter
const void *op_global_reg_iter(const void *const iter, char *const name, yankreg_T *const reg,
bool *is_unnamed)
FUNC_ATTR_NONNULL_ARG(2, 3, 4) FUNC_ATTR_WARN_UNUSED_RESULT
{
return op_reg_iter(iter, y_regs, name, reg, is_unnamed);
}
/// Iterate over registers `regs`.
///
/// @param[in] iter Iterator. Pass NULL to start iteration.
/// @param[in] regs Registers list to be iterated.
/// @param[out] name Register name.
/// @param[out] reg Register contents.
///
/// @return Pointer that must be passed to next `op_register_iter` call or
/// NULL if iteration is over.
const void *op_reg_iter(const void *const iter, const yankreg_T *const regs, char *const name,
yankreg_T *const reg, bool *is_unnamed)
FUNC_ATTR_NONNULL_ARG(3, 4, 5) FUNC_ATTR_WARN_UNUSED_RESULT
{
*name = NUL;
const yankreg_T *iter_reg = (iter == NULL
? &(regs[0])
: (const yankreg_T *const)iter);
while (iter_reg - &(regs[0]) < NUM_SAVED_REGISTERS && reg_empty(iter_reg)) {
iter_reg++;
}
if (iter_reg - &(regs[0]) == NUM_SAVED_REGISTERS || reg_empty(iter_reg)) {
return NULL;
}
int iter_off = (int)(iter_reg - &(regs[0]));
*name = (char)get_register_name(iter_off);
*reg = *iter_reg;
*is_unnamed = (iter_reg == y_previous);
while (++iter_reg - &(regs[0]) < NUM_SAVED_REGISTERS) {
if (!reg_empty(iter_reg)) {
return (void *)iter_reg;
}
}
return NULL;
}
/// Get a number of non-empty registers
size_t op_reg_amount(void)
FUNC_ATTR_WARN_UNUSED_RESULT
{
size_t ret = 0;
for (size_t i = 0; i < NUM_SAVED_REGISTERS; i++) {
if (!reg_empty(y_regs + i)) {
ret++;
}
}
return ret;
}
/// Set register to a given value
///
/// @param[in] name Register name.
/// @param[in] reg Register value.
/// @param[in] is_unnamed Whether to set the unnamed regiseter to reg
///
/// @return true on success, false on failure.
bool op_reg_set(const char name, const yankreg_T reg, bool is_unnamed)
{
int i = op_reg_index(name);
if (i == -1) {
return false;
}
free_register(&y_regs[i]);
y_regs[i] = reg;
if (is_unnamed) {
y_previous = &y_regs[i];
}
return true;
}
/// Get register with the given name
///
/// @param[in] name Register name.
///
/// @return Pointer to the register contents or NULL.
const yankreg_T *op_reg_get(const char name)
{
int i = op_reg_index(name);
if (i == -1) {
return NULL;
}
return &y_regs[i];
}
/// Set the previous yank register
///
/// @param[in] name Register name.
///
/// @return true on success, false on failure.
bool op_reg_set_previous(const char name)
FUNC_ATTR_WARN_UNUSED_RESULT
{
int i = op_reg_index(name);
if (i == -1) {
return false;
}
y_previous = &y_regs[i];
return true;
}
/// Get the byte count of buffer region. End-exclusive.
///
/// @return number of bytes
bcount_t get_region_bytecount(buf_T *buf, linenr_T start_lnum, linenr_T end_lnum, colnr_T start_col,
colnr_T end_col)
{
linenr_T max_lnum = buf->b_ml.ml_line_count;
if (start_lnum > max_lnum) {
return 0;
}
if (start_lnum == end_lnum) {
return end_col - start_col;
}
const char *first = (const char *)ml_get_buf(buf, start_lnum, false);
bcount_t deleted_bytes = (bcount_t)STRLEN(first) - start_col + 1;
for (linenr_T i = 1; i <= end_lnum-start_lnum-1; i++) {
if (start_lnum + i > max_lnum) {
return deleted_bytes;
}
deleted_bytes += (bcount_t)STRLEN(ml_get_buf(buf, start_lnum + i, false)) + 1;
}
if (end_lnum > max_lnum) {
return deleted_bytes;
}
return deleted_bytes + end_col;
}
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