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neovim/src/nvim/misc1.c

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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
/*
* misc1.c: functions that didn't seem to fit elsewhere
*/
#include <assert.h>
#include <inttypes.h>
#include <stdbool.h>
#include <string.h>
#include <limits.h>
#include "nvim/vim.h"
#include "nvim/ascii.h"
#include "nvim/misc1.h"
#include "nvim/charset.h"
#include "nvim/cursor.h"
#include "nvim/diff.h"
#include "nvim/edit.h"
#include "nvim/eval.h"
#include "nvim/ex_cmds.h"
#include "nvim/ex_docmd.h"
#include "nvim/ex_getln.h"
#include "nvim/fileio.h"
#include "nvim/func_attr.h"
#include "nvim/fold.h"
#include "nvim/getchar.h"
#include "nvim/indent.h"
#include "nvim/indent_c.h"
#include "nvim/buffer_updates.h"
#include "nvim/main.h"
#include "nvim/mark.h"
#include "nvim/mbyte.h"
#include "nvim/memline.h"
#include "nvim/memory.h"
#include "nvim/message.h"
#include "nvim/garray.h"
#include "nvim/move.h"
#include "nvim/mouse.h"
#include "nvim/option.h"
#include "nvim/os_unix.h"
#include "nvim/quickfix.h"
#include "nvim/regexp.h"
#include "nvim/screen.h"
#include "nvim/search.h"
#include "nvim/state.h"
#include "nvim/strings.h"
#include "nvim/tag.h"
#include "nvim/ui.h"
#include "nvim/undo.h"
#include "nvim/window.h"
#include "nvim/os/os.h"
#include "nvim/os/shell.h"
#include "nvim/os/signal.h"
#include "nvim/os/input.h"
#include "nvim/os/time.h"
#include "nvim/event/stream.h"
#include "nvim/buffer.h"
#ifdef INCLUDE_GENERATED_DECLARATIONS
# include "misc1.c.generated.h"
#endif
/* All user names (for ~user completion as done by shell). */
static garray_T ga_users = GA_EMPTY_INIT_VALUE;
/*
* open_line: Add a new line below or above the current line.
*
* For VREPLACE mode, we only add a new line when we get to the end of the
* file, otherwise we just start replacing the next line.
*
* Caller must take care of undo. Since VREPLACE may affect any number of
* lines however, it may call u_save_cursor() again when starting to change a
* new line.
* "flags": OPENLINE_DELSPACES delete spaces after cursor
* OPENLINE_DO_COM format comments
* OPENLINE_KEEPTRAIL keep trailing spaces
* OPENLINE_MARKFIX adjust mark positions after the line break
* OPENLINE_COM_LIST format comments with list or 2nd line indent
*
* "second_line_indent": indent for after ^^D in Insert mode or if flag
* OPENLINE_COM_LIST
*
* Return TRUE for success, FALSE for failure
*/
int
open_line (
int dir, /* FORWARD or BACKWARD */
int flags,
int second_line_indent
)
{
char_u *next_line = NULL; // copy of the next line
char_u *p_extra = NULL; // what goes to next line
colnr_T less_cols = 0; // less columns for mark in new line
colnr_T less_cols_off = 0; // columns to skip for mark adjust
pos_T old_cursor; // old cursor position
colnr_T newcol = 0; // new cursor column
int newindent = 0; // auto-indent of the new line
bool trunc_line = false; // truncate current line afterwards
bool retval = false; // return value
int extra_len = 0; // length of p_extra string
int lead_len; // length of comment leader
char_u *lead_flags; // position in 'comments' for comment leader
char_u *leader = NULL; // copy of comment leader
char_u *allocated = NULL; // allocated memory
char_u *p;
char_u saved_char = NUL; // init for GCC
pos_T *pos;
bool do_si = (!p_paste && curbuf->b_p_si && !curbuf->b_p_cin
&& *curbuf->b_p_inde == NUL);
bool no_si = false; // reset did_si afterwards
int first_char = NUL; // init for GCC
int vreplace_mode;
bool did_append; // appended a new line
int saved_pi = curbuf->b_p_pi; // copy of preserveindent setting
// make a copy of the current line so we can mess with it
char_u *saved_line = vim_strsave(get_cursor_line_ptr());
if (State & VREPLACE_FLAG) {
/*
* With VREPLACE we make a copy of the next line, which we will be
* starting to replace. First make the new line empty and let vim play
* with the indenting and comment leader to its heart's content. Then
* we grab what it ended up putting on the new line, put back the
* original line, and call ins_char() to put each new character onto
* the line, replacing what was there before and pushing the right
* stuff onto the replace stack. -- webb.
*/
if (curwin->w_cursor.lnum < orig_line_count)
next_line = vim_strsave(ml_get(curwin->w_cursor.lnum + 1));
else
next_line = vim_strsave((char_u *)"");
/*
* In VREPLACE mode, a NL replaces the rest of the line, and starts
* replacing the next line, so push all of the characters left on the
* line onto the replace stack. We'll push any other characters that
* might be replaced at the start of the next line (due to autoindent
* etc) a bit later.
*/
replace_push(NUL); /* Call twice because BS over NL expects it */
replace_push(NUL);
p = saved_line + curwin->w_cursor.col;
while (*p != NUL) {
if (has_mbyte)
p += replace_push_mb(p);
else
replace_push(*p++);
}
saved_line[curwin->w_cursor.col] = NUL;
}
if ((State & INSERT)
&& !(State & VREPLACE_FLAG)
) {
p_extra = saved_line + curwin->w_cursor.col;
if (do_si) { /* need first char after new line break */
p = skipwhite(p_extra);
first_char = *p;
}
extra_len = (int)STRLEN(p_extra);
saved_char = *p_extra;
*p_extra = NUL;
}
u_clearline(); // cannot do "U" command when adding lines
did_si = false;
ai_col = 0;
/*
* If we just did an auto-indent, then we didn't type anything on
* the prior line, and it should be truncated. Do this even if 'ai' is not
* set because automatically inserting a comment leader also sets did_ai.
*/
if (dir == FORWARD && did_ai)
trunc_line = TRUE;
/*
* If 'autoindent' and/or 'smartindent' is set, try to figure out what
* indent to use for the new line.
*/
if (curbuf->b_p_ai
|| do_si
) {
// count white space on current line
newindent = get_indent_str(saved_line, (int)curbuf->b_p_ts, false);
if (newindent == 0 && !(flags & OPENLINE_COM_LIST)) {
newindent = second_line_indent; // for ^^D command in insert mode
}
/*
* Do smart indenting.
* In insert/replace mode (only when dir == FORWARD)
* we may move some text to the next line. If it starts with '{'
* don't add an indent. Fixes inserting a NL before '{' in line
* "if (condition) {"
*/
if (!trunc_line && do_si && *saved_line != NUL
&& (p_extra == NULL || first_char != '{')) {
char_u *ptr;
char_u last_char;
old_cursor = curwin->w_cursor;
ptr = saved_line;
if (flags & OPENLINE_DO_COM)
lead_len = get_leader_len(ptr, NULL, FALSE, TRUE);
else
lead_len = 0;
if (dir == FORWARD) {
// Skip preprocessor directives, unless they are
// recognised as comments.
if (lead_len == 0 && ptr[0] == '#') {
while (ptr[0] == '#' && curwin->w_cursor.lnum > 1) {
ptr = ml_get(--curwin->w_cursor.lnum);
}
newindent = get_indent();
}
if (flags & OPENLINE_DO_COM)
lead_len = get_leader_len(ptr, NULL, FALSE, TRUE);
else
lead_len = 0;
if (lead_len > 0) {
/*
* This case gets the following right:
* \*
* * A comment (read '\' as '/').
* *\
* #define IN_THE_WAY
* This should line up here;
*/
p = skipwhite(ptr);
if (p[0] == '/' && p[1] == '*')
p++;
if (p[0] == '*') {
for (p++; *p; p++) {
if (p[0] == '/' && p[-1] == '*') {
/*
* End of C comment, indent should line up
* with the line containing the start of
* the comment
*/
curwin->w_cursor.col = (colnr_T)(p - ptr);
if ((pos = findmatch(NULL, NUL)) != NULL) {
curwin->w_cursor.lnum = pos->lnum;
newindent = get_indent();
}
}
}
}
} else { /* Not a comment line */
/* Find last non-blank in line */
p = ptr + STRLEN(ptr) - 1;
while (p > ptr && ascii_iswhite(*p))
--p;
last_char = *p;
/*
* find the character just before the '{' or ';'
*/
if (last_char == '{' || last_char == ';') {
if (p > ptr)
--p;
while (p > ptr && ascii_iswhite(*p))
--p;
}
/*
* Try to catch lines that are split over multiple
* lines. eg:
* if (condition &&
* condition) {
* Should line up here!
* }
*/
if (*p == ')') {
curwin->w_cursor.col = (colnr_T)(p - ptr);
if ((pos = findmatch(NULL, '(')) != NULL) {
curwin->w_cursor.lnum = pos->lnum;
newindent = get_indent();
ptr = get_cursor_line_ptr();
}
}
/*
* If last character is '{' do indent, without
* checking for "if" and the like.
*/
if (last_char == '{') {
did_si = true; // do indent
no_si = true; // don't delete it when '{' typed
}
/*
* Look for "if" and the like, use 'cinwords'.
* Don't do this if the previous line ended in ';' or
* '}'.
*/
else if (last_char != ';' && last_char != '}'
&& cin_is_cinword(ptr))
did_si = true;
}
} else { // dir == BACKWARD
// Skip preprocessor directives, unless they are
// recognised as comments.
if (lead_len == 0 && ptr[0] == '#') {
bool was_backslashed = false;
while ((ptr[0] == '#' || was_backslashed)
&& curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count) {
if (*ptr && ptr[STRLEN(ptr) - 1] == '\\') {
was_backslashed = true;
} else {
was_backslashed = false;
}
ptr = ml_get(++curwin->w_cursor.lnum);
}
if (was_backslashed) {
newindent = 0; // Got to end of file
} else {
newindent = get_indent();
}
}
p = skipwhite(ptr);
if (*p == '}') { // if line starts with '}': do indent
did_si = true;
} else { // can delete indent when '{' typed
can_si_back = true;
}
}
curwin->w_cursor = old_cursor;
}
if (do_si) {
can_si = true;
}
did_ai = true;
}
/*
* Find out if the current line starts with a comment leader.
* This may then be inserted in front of the new line.
*/
end_comment_pending = NUL;
if (flags & OPENLINE_DO_COM)
lead_len = get_leader_len(saved_line, &lead_flags, dir == BACKWARD, TRUE);
else
lead_len = 0;
if (lead_len > 0) {
char_u *lead_repl = NULL; /* replaces comment leader */
int lead_repl_len = 0; /* length of *lead_repl */
char_u lead_middle[COM_MAX_LEN]; /* middle-comment string */
char_u lead_end[COM_MAX_LEN]; /* end-comment string */
char_u *comment_end = NULL; /* where lead_end has been found */
int extra_space = FALSE; /* append extra space */
int current_flag;
int require_blank = FALSE; /* requires blank after middle */
char_u *p2;
/*
* If the comment leader has the start, middle or end flag, it may not
* be used or may be replaced with the middle leader.
*/
for (p = lead_flags; *p && *p != ':'; ++p) {
if (*p == COM_BLANK) {
require_blank = TRUE;
continue;
}
if (*p == COM_START || *p == COM_MIDDLE) {
current_flag = *p;
if (*p == COM_START) {
/*
* Doing "O" on a start of comment does not insert leader.
*/
if (dir == BACKWARD) {
lead_len = 0;
break;
}
/* find start of middle part */
(void)copy_option_part(&p, lead_middle, COM_MAX_LEN, ",");
require_blank = FALSE;
}
/*
* Isolate the strings of the middle and end leader.
*/
while (*p && p[-1] != ':') { /* find end of middle flags */
if (*p == COM_BLANK)
require_blank = TRUE;
++p;
}
(void)copy_option_part(&p, lead_middle, COM_MAX_LEN, ",");
while (*p && p[-1] != ':') { /* find end of end flags */
/* Check whether we allow automatic ending of comments */
if (*p == COM_AUTO_END)
end_comment_pending = -1; /* means we want to set it */
++p;
}
size_t n = copy_option_part(&p, lead_end, COM_MAX_LEN, ",");
if (end_comment_pending == -1) /* we can set it now */
end_comment_pending = lead_end[n - 1];
/*
* If the end of the comment is in the same line, don't use
* the comment leader.
*/
if (dir == FORWARD) {
for (p = saved_line + lead_len; *p; ++p)
if (STRNCMP(p, lead_end, n) == 0) {
comment_end = p;
lead_len = 0;
break;
}
}
/*
* Doing "o" on a start of comment inserts the middle leader.
*/
if (lead_len > 0) {
if (current_flag == COM_START) {
lead_repl = lead_middle;
lead_repl_len = (int)STRLEN(lead_middle);
}
/*
* If we have hit RETURN immediately after the start
* comment leader, then put a space after the middle
* comment leader on the next line.
*/
if (!ascii_iswhite(saved_line[lead_len - 1])
&& ((p_extra != NULL
&& (int)curwin->w_cursor.col == lead_len)
|| (p_extra == NULL
&& saved_line[lead_len] == NUL)
|| require_blank))
extra_space = TRUE;
}
break;
}
if (*p == COM_END) {
/*
* Doing "o" on the end of a comment does not insert leader.
* Remember where the end is, might want to use it to find the
* start (for C-comments).
*/
if (dir == FORWARD) {
comment_end = skipwhite(saved_line);
lead_len = 0;
break;
}
/*
* Doing "O" on the end of a comment inserts the middle leader.
* Find the string for the middle leader, searching backwards.
*/
while (p > curbuf->b_p_com && *p != ',')
--p;
for (lead_repl = p; lead_repl > curbuf->b_p_com
&& lead_repl[-1] != ':'; --lead_repl)
;
lead_repl_len = (int)(p - lead_repl);
/* We can probably always add an extra space when doing "O" on
* the comment-end */
extra_space = TRUE;
/* Check whether we allow automatic ending of comments */
for (p2 = p; *p2 && *p2 != ':'; p2++) {
if (*p2 == COM_AUTO_END)
end_comment_pending = -1; /* means we want to set it */
}
if (end_comment_pending == -1) {
/* Find last character in end-comment string */
while (*p2 && *p2 != ',')
p2++;
end_comment_pending = p2[-1];
}
break;
}
if (*p == COM_FIRST) {
/*
* Comment leader for first line only: Don't repeat leader
* when using "O", blank out leader when using "o".
*/
if (dir == BACKWARD)
lead_len = 0;
else {
lead_repl = (char_u *)"";
lead_repl_len = 0;
}
break;
}
}
if (lead_len > 0) {
// allocate buffer (may concatenate p_extra later)
leader = xmalloc((size_t)(lead_len + lead_repl_len + extra_space
+ extra_len + (second_line_indent > 0
? second_line_indent : 0) + 1));
allocated = leader; // remember to free it later
STRLCPY(leader, saved_line, lead_len + 1);
/*
* Replace leader with lead_repl, right or left adjusted
*/
if (lead_repl != NULL) {
int c = 0;
int off = 0;
for (p = lead_flags; *p != NUL && *p != ':'; ) {
if (*p == COM_RIGHT || *p == COM_LEFT)
c = *p++;
else if (ascii_isdigit(*p) || *p == '-')
off = getdigits_int(&p);
else
++p;
}
if (c == COM_RIGHT) { /* right adjusted leader */
/* find last non-white in the leader to line up with */
for (p = leader + lead_len - 1; p > leader
&& ascii_iswhite(*p); --p)
;
++p;
/* Compute the length of the replaced characters in
* screen characters, not bytes. */
{
int repl_size = vim_strnsize(lead_repl,
lead_repl_len);
int old_size = 0;
char_u *endp = p;
int l;
while (old_size < repl_size && p > leader) {
MB_PTR_BACK(leader, p);
old_size += ptr2cells(p);
}
l = lead_repl_len - (int)(endp - p);
if (l != 0)
memmove(endp + l, endp,
(size_t)((leader + lead_len) - endp));
lead_len += l;
}
memmove(p, lead_repl, (size_t)lead_repl_len);
if (p + lead_repl_len > leader + lead_len)
p[lead_repl_len] = NUL;
/* blank-out any other chars from the old leader. */
while (--p >= leader) {
int l = utf_head_off(leader, p);
if (l > 1) {
p -= l;
if (ptr2cells(p) > 1) {
p[1] = ' ';
--l;
}
memmove(p + 1, p + l + 1,
(size_t)((leader + lead_len) - (p + l + 1)));
lead_len -= l;
*p = ' ';
} else if (!ascii_iswhite(*p))
*p = ' ';
}
} else { /* left adjusted leader */
p = skipwhite(leader);
/* Compute the length of the replaced characters in
* screen characters, not bytes. Move the part that is
* not to be overwritten. */
{
int repl_size = vim_strnsize(lead_repl,
lead_repl_len);
int i;
int l;
for (i = 0; i < lead_len && p[i] != NUL; i += l) {
l = (*mb_ptr2len)(p + i);
if (vim_strnsize(p, i + l) > repl_size)
break;
}
if (i != lead_repl_len) {
memmove(p + lead_repl_len, p + i,
(size_t)(lead_len - i - (p - leader)));
lead_len += lead_repl_len - i;
}
}
memmove(p, lead_repl, (size_t)lead_repl_len);
/* Replace any remaining non-white chars in the old
* leader by spaces. Keep Tabs, the indent must
* remain the same. */
for (p += lead_repl_len; p < leader + lead_len; ++p)
if (!ascii_iswhite(*p)) {
/* Don't put a space before a TAB. */
if (p + 1 < leader + lead_len && p[1] == TAB) {
lead_len--;
memmove(p, p + 1, (size_t)(leader + lead_len - p));
} else {
int l = (*mb_ptr2len)(p);
if (l > 1) {
if (ptr2cells(p) > 1) {
/* Replace a double-wide char with
* two spaces */
--l;
*p++ = ' ';
}
memmove(p + 1, p + l, (size_t)(leader + lead_len - p));
lead_len -= l - 1;
}
*p = ' ';
}
}
*p = NUL;
}
/* Recompute the indent, it may have changed. */
if (curbuf->b_p_ai
|| do_si
)
newindent = get_indent_str(leader, (int)curbuf->b_p_ts, false);
/* Add the indent offset */
if (newindent + off < 0) {
off = -newindent;
newindent = 0;
} else
newindent += off;
/* Correct trailing spaces for the shift, so that
* alignment remains equal. */
while (off > 0 && lead_len > 0
&& leader[lead_len - 1] == ' ') {
/* Don't do it when there is a tab before the space */
if (vim_strchr(skipwhite(leader), '\t') != NULL)
break;
--lead_len;
--off;
}
/* If the leader ends in white space, don't add an
* extra space */
if (lead_len > 0 && ascii_iswhite(leader[lead_len - 1]))
extra_space = FALSE;
leader[lead_len] = NUL;
}
if (extra_space) {
leader[lead_len++] = ' ';
leader[lead_len] = NUL;
}
newcol = lead_len;
/*
* if a new indent will be set below, remove the indent that
* is in the comment leader
*/
if (newindent
|| did_si
) {
while (lead_len && ascii_iswhite(*leader)) {
--lead_len;
--newcol;
++leader;
}
}
did_si = can_si = false;
} else if (comment_end != NULL) {
// We have finished a comment, so we don't use the leader.
// If this was a C-comment and 'ai' or 'si' is set do a normal
// indent to align with the line containing the start of the
// comment.
if (comment_end[0] == '*' && comment_end[1] == '/'
&& (curbuf->b_p_ai || do_si)) {
old_cursor = curwin->w_cursor;
curwin->w_cursor.col = (colnr_T)(comment_end - saved_line);
if ((pos = findmatch(NULL, NUL)) != NULL) {
curwin->w_cursor.lnum = pos->lnum;
newindent = get_indent();
}
curwin->w_cursor = old_cursor;
}
}
}
/* (State == INSERT || State == REPLACE), only when dir == FORWARD */
if (p_extra != NULL) {
*p_extra = saved_char; /* restore char that NUL replaced */
/*
* When 'ai' set or "flags" has OPENLINE_DELSPACES, skip to the first
* non-blank.
*
* When in REPLACE mode, put the deleted blanks on the replace stack,
* preceded by a NUL, so they can be put back when a BS is entered.
*/
if (REPLACE_NORMAL(State))
replace_push(NUL); /* end of extra blanks */
if (curbuf->b_p_ai || (flags & OPENLINE_DELSPACES)) {
while ((*p_extra == ' ' || *p_extra == '\t')
&& !utf_iscomposing(utf_ptr2char(p_extra + 1))) {
if (REPLACE_NORMAL(State)) {
replace_push(*p_extra);
}
p_extra++;
less_cols_off++;
}
}
/* columns for marks adjusted for removed columns */
less_cols = (int)(p_extra - saved_line);
}
if (p_extra == NULL)
p_extra = (char_u *)""; /* append empty line */
/* concatenate leader and p_extra, if there is a leader */
if (lead_len > 0) {
if (flags & OPENLINE_COM_LIST && second_line_indent > 0) {
int i;
int padding = second_line_indent
- (newindent + (int)STRLEN(leader));
/* Here whitespace is inserted after the comment char.
* Below, set_indent(newindent, SIN_INSERT) will insert the
* whitespace needed before the comment char. */
for (i = 0; i < padding; i++) {
STRCAT(leader, " ");
less_cols--;
newcol++;
}
}
STRCAT(leader, p_extra);
p_extra = leader;
did_ai = true; // So truncating blanks works with comments
less_cols -= lead_len;
} else
end_comment_pending = NUL; /* turns out there was no leader */
old_cursor = curwin->w_cursor;
if (dir == BACKWARD)
--curwin->w_cursor.lnum;
if (!(State & VREPLACE_FLAG) || old_cursor.lnum >= orig_line_count) {
if (ml_append(curwin->w_cursor.lnum, p_extra, (colnr_T)0, FALSE)
== FAIL)
goto theend;
// Postpone calling changed_lines(), because it would mess up folding
// with markers.
// Skip mark_adjust when adding a line after the last one, there can't
// be marks there. But still needed in diff mode.
if (curwin->w_cursor.lnum + 1 < curbuf->b_ml.ml_line_count
|| curwin->w_p_diff) {
mark_adjust(curwin->w_cursor.lnum + 1, (linenr_T)MAXLNUM, 1L, 0L, false);
}
did_append = true;
} else {
/*
* In VREPLACE mode we are starting to replace the next line.
*/
curwin->w_cursor.lnum++;
if (curwin->w_cursor.lnum >= Insstart.lnum + vr_lines_changed) {
/* In case we NL to a new line, BS to the previous one, and NL
* again, we don't want to save the new line for undo twice.
*/
(void)u_save_cursor(); /* errors are ignored! */
vr_lines_changed++;
}
ml_replace(curwin->w_cursor.lnum, p_extra, true);
changed_bytes(curwin->w_cursor.lnum, 0);
curwin->w_cursor.lnum--;
did_append = FALSE;
}
if (newindent
|| did_si
) {
++curwin->w_cursor.lnum;
if (did_si) {
int sw = get_sw_value(curbuf);
if (p_sr)
newindent -= newindent % sw;
newindent += sw;
}
/* Copy the indent */
if (curbuf->b_p_ci) {
(void)copy_indent(newindent, saved_line);
/*
* Set the 'preserveindent' option so that any further screwing
* with the line doesn't entirely destroy our efforts to preserve
* it. It gets restored at the function end.
*/
curbuf->b_p_pi = TRUE;
} else
(void)set_indent(newindent, SIN_INSERT);
less_cols -= curwin->w_cursor.col;
ai_col = curwin->w_cursor.col;
/*
* In REPLACE mode, for each character in the new indent, there must
* be a NUL on the replace stack, for when it is deleted with BS
*/
if (REPLACE_NORMAL(State)) {
for (colnr_T n = 0; n < curwin->w_cursor.col; n++) {
replace_push(NUL);
}
}
newcol += curwin->w_cursor.col;
if (no_si) {
did_si = false;
}
}
/*
* In REPLACE mode, for each character in the extra leader, there must be
* a NUL on the replace stack, for when it is deleted with BS.
*/
if (REPLACE_NORMAL(State))
while (lead_len-- > 0)
replace_push(NUL);
curwin->w_cursor = old_cursor;
if (dir == FORWARD) {
if (trunc_line || (State & INSERT)) {
// truncate current line at cursor
saved_line[curwin->w_cursor.col] = NUL;
// Remove trailing white space, unless OPENLINE_KEEPTRAIL used.
if (trunc_line && !(flags & OPENLINE_KEEPTRAIL)) {
truncate_spaces(saved_line);
}
ml_replace(curwin->w_cursor.lnum, saved_line, false);
saved_line = NULL;
if (did_append) {
changed_lines(curwin->w_cursor.lnum, curwin->w_cursor.col,
curwin->w_cursor.lnum + 1, 1L, true);
did_append = false;
/* Move marks after the line break to the new line. */
if (flags & OPENLINE_MARKFIX)
mark_col_adjust(curwin->w_cursor.lnum,
curwin->w_cursor.col + less_cols_off,
1L, (long)-less_cols, 0);
} else {
changed_bytes(curwin->w_cursor.lnum, curwin->w_cursor.col);
}
}
/*
* Put the cursor on the new line. Careful: the scrollup() above may
* have moved w_cursor, we must use old_cursor.
*/
curwin->w_cursor.lnum = old_cursor.lnum + 1;
}
if (did_append) {
changed_lines(curwin->w_cursor.lnum, 0, curwin->w_cursor.lnum, 1L, true);
}
curwin->w_cursor.col = newcol;
curwin->w_cursor.coladd = 0;
/*
* In VREPLACE mode, we are handling the replace stack ourselves, so stop
* fixthisline() from doing it (via change_indent()) by telling it we're in
* normal INSERT mode.
*/
if (State & VREPLACE_FLAG) {
vreplace_mode = State; /* So we know to put things right later */
State = INSERT;
} else
vreplace_mode = 0;
/*
* May do lisp indenting.
*/
if (!p_paste
&& leader == NULL
&& curbuf->b_p_lisp
&& curbuf->b_p_ai) {
fixthisline(get_lisp_indent);
ai_col = (colnr_T)getwhitecols_curline();
}
/*
* May do indenting after opening a new line.
*/
if (!p_paste
&& (curbuf->b_p_cin
|| *curbuf->b_p_inde != NUL
)
&& in_cinkeys(dir == FORWARD
? KEY_OPEN_FORW
: KEY_OPEN_BACK, ' ', linewhite(curwin->w_cursor.lnum))) {
do_c_expr_indent();
ai_col = (colnr_T)getwhitecols_curline();
}
if (vreplace_mode != 0)
State = vreplace_mode;
/*
* Finally, VREPLACE gets the stuff on the new line, then puts back the
* original line, and inserts the new stuff char by char, pushing old stuff
* onto the replace stack (via ins_char()).
*/
if (State & VREPLACE_FLAG) {
/* Put new line in p_extra */
p_extra = vim_strsave(get_cursor_line_ptr());
// Put back original line
ml_replace(curwin->w_cursor.lnum, next_line, false);
/* Insert new stuff into line again */
curwin->w_cursor.col = 0;
curwin->w_cursor.coladd = 0;
ins_bytes(p_extra); /* will call changed_bytes() */
xfree(p_extra);
next_line = NULL;
}
retval = true; // success!
theend:
curbuf->b_p_pi = saved_pi;
xfree(saved_line);
xfree(next_line);
xfree(allocated);
return retval;
}
/*
* get_leader_len() returns the length in bytes of the prefix of the given
* string which introduces a comment. If this string is not a comment then
* 0 is returned.
* When "flags" is not NULL, it is set to point to the flags of the recognized
* comment leader.
* "backward" must be true for the "O" command.
* If "include_space" is set, include trailing whitespace while calculating the
* length.
*/
int get_leader_len(char_u *line, char_u **flags, int backward, int include_space)
{
int i, j;
int result;
int got_com = FALSE;
int found_one;
char_u part_buf[COM_MAX_LEN]; /* buffer for one option part */
char_u *string; /* pointer to comment string */
char_u *list;
int middle_match_len = 0;
char_u *prev_list;
char_u *saved_flags = NULL;
result = i = 0;
while (ascii_iswhite(line[i])) /* leading white space is ignored */
++i;
/*
* Repeat to match several nested comment strings.
*/
while (line[i] != NUL) {
/*
* scan through the 'comments' option for a match
*/
found_one = FALSE;
for (list = curbuf->b_p_com; *list; ) {
/* Get one option part into part_buf[]. Advance "list" to next
* one. Put "string" at start of string. */
if (!got_com && flags != NULL)
*flags = list; /* remember where flags started */
prev_list = list;
(void)copy_option_part(&list, part_buf, COM_MAX_LEN, ",");
string = vim_strchr(part_buf, ':');
if (string == NULL) /* missing ':', ignore this part */
continue;
*string++ = NUL; /* isolate flags from string */
/* If we found a middle match previously, use that match when this
* is not a middle or end. */
if (middle_match_len != 0
&& vim_strchr(part_buf, COM_MIDDLE) == NULL
&& vim_strchr(part_buf, COM_END) == NULL)
break;
/* When we already found a nested comment, only accept further
* nested comments. */
if (got_com && vim_strchr(part_buf, COM_NEST) == NULL)
continue;
/* When 'O' flag present and using "O" command skip this one. */
if (backward && vim_strchr(part_buf, COM_NOBACK) != NULL)
continue;
/* Line contents and string must match.
* When string starts with white space, must have some white space
* (but the amount does not need to match, there might be a mix of
* TABs and spaces). */
if (ascii_iswhite(string[0])) {
if (i == 0 || !ascii_iswhite(line[i - 1]))
continue; /* missing white space */
while (ascii_iswhite(string[0]))
++string;
}
for (j = 0; string[j] != NUL && string[j] == line[i + j]; ++j)
;
if (string[j] != NUL)
continue; /* string doesn't match */
/* When 'b' flag used, there must be white space or an
* end-of-line after the string in the line. */
if (vim_strchr(part_buf, COM_BLANK) != NULL
&& !ascii_iswhite(line[i + j]) && line[i + j] != NUL)
continue;
/* We have found a match, stop searching unless this is a middle
* comment. The middle comment can be a substring of the end
* comment in which case it's better to return the length of the
* end comment and its flags. Thus we keep searching with middle
* and end matches and use an end match if it matches better. */
if (vim_strchr(part_buf, COM_MIDDLE) != NULL) {
if (middle_match_len == 0) {
middle_match_len = j;
saved_flags = prev_list;
}
continue;
}
if (middle_match_len != 0 && j > middle_match_len)
/* Use this match instead of the middle match, since it's a
* longer thus better match. */
middle_match_len = 0;
if (middle_match_len == 0)
i += j;
found_one = TRUE;
break;
}
if (middle_match_len != 0) {
/* Use the previously found middle match after failing to find a
* match with an end. */
if (!got_com && flags != NULL)
*flags = saved_flags;
i += middle_match_len;
found_one = TRUE;
}
/* No match found, stop scanning. */
if (!found_one)
break;
result = i;
/* Include any trailing white space. */
while (ascii_iswhite(line[i]))
++i;
if (include_space)
result = i;
/* If this comment doesn't nest, stop here. */
got_com = TRUE;
if (vim_strchr(part_buf, COM_NEST) == NULL)
break;
}
return result;
}
/*
* Return the offset at which the last comment in line starts. If there is no
* comment in the whole line, -1 is returned.
*
* When "flags" is not null, it is set to point to the flags describing the
* recognized comment leader.
*/
int get_last_leader_offset(char_u *line, char_u **flags)
{
int result = -1;
int i, j;
int lower_check_bound = 0;
char_u *string;
char_u *com_leader;
char_u *com_flags;
char_u *list;
int found_one;
char_u part_buf[COM_MAX_LEN]; /* buffer for one option part */
/*
* Repeat to match several nested comment strings.
*/
i = (int)STRLEN(line);
while (--i >= lower_check_bound) {
/*
* scan through the 'comments' option for a match
*/
found_one = FALSE;
for (list = curbuf->b_p_com; *list; ) {
char_u *flags_save = list;
/*
* Get one option part into part_buf[]. Advance list to next one.
* put string at start of string.
*/
(void)copy_option_part(&list, part_buf, COM_MAX_LEN, ",");
string = vim_strchr(part_buf, ':');
if (string == NULL) { /* If everything is fine, this cannot actually
* happen. */
continue;
}
*string++ = NUL; /* Isolate flags from string. */
com_leader = string;
/*
* Line contents and string must match.
* When string starts with white space, must have some white space
* (but the amount does not need to match, there might be a mix of
* TABs and spaces).
*/
if (ascii_iswhite(string[0])) {
if (i == 0 || !ascii_iswhite(line[i - 1]))
continue;
while (ascii_iswhite(*string)) {
string++;
}
}
for (j = 0; string[j] != NUL && string[j] == line[i + j]; ++j)
/* do nothing */;
if (string[j] != NUL)
continue;
/*
* When 'b' flag used, there must be white space or an
* end-of-line after the string in the line.
*/
if (vim_strchr(part_buf, COM_BLANK) != NULL
&& !ascii_iswhite(line[i + j]) && line[i + j] != NUL) {
continue;
}
if (vim_strchr(part_buf, COM_MIDDLE) != NULL) {
// For a middlepart comment, only consider it to match if
// everything before the current position in the line is
// whitespace. Otherwise we would think we are inside a
// comment if the middle part appears somewhere in the middle
// of the line. E.g. for C the "*" appears often.
for (j = 0; ascii_iswhite(line[j]) && j <= i; j++) {
}
if (j < i) {
continue;
}
}
/*
* We have found a match, stop searching.
*/
found_one = TRUE;
if (flags)
*flags = flags_save;
com_flags = flags_save;
break;
}
if (found_one) {
char_u part_buf2[COM_MAX_LEN]; /* buffer for one option part */
int len1, len2, off;
result = i;
/*
* If this comment nests, continue searching.
*/
if (vim_strchr(part_buf, COM_NEST) != NULL)
continue;
lower_check_bound = i;
/* Let's verify whether the comment leader found is a substring
* of other comment leaders. If it is, let's adjust the
* lower_check_bound so that we make sure that we have determined
* the comment leader correctly.
*/
while (ascii_iswhite(*com_leader))
++com_leader;
len1 = (int)STRLEN(com_leader);
for (list = curbuf->b_p_com; *list; ) {
char_u *flags_save = list;
(void)copy_option_part(&list, part_buf2, COM_MAX_LEN, ",");
if (flags_save == com_flags)
continue;
string = vim_strchr(part_buf2, ':');
++string;
while (ascii_iswhite(*string))
++string;
len2 = (int)STRLEN(string);
if (len2 == 0)
continue;
/* Now we have to verify whether string ends with a substring
* beginning the com_leader. */
for (off = (len2 > i ? i : len2); off > 0 && off + len1 > len2; ) {
--off;
if (!STRNCMP(string + off, com_leader, len2 - off)) {
if (i - off < lower_check_bound)
lower_check_bound = i - off;
}
}
}
}
}
return result;
}
/*
* Return the number of window lines occupied by buffer line "lnum".
*/
int plines(const linenr_T lnum)
{
return plines_win(curwin, lnum, true);
}
int plines_win(
win_T *const wp,
const linenr_T lnum,
const bool winheight // when true limit to window height
)
{
/* Check for filler lines above this buffer line. When folded the result
* is one line anyway. */
return plines_win_nofill(wp, lnum, winheight) + diff_check_fill(wp, lnum);
}
int plines_nofill(const linenr_T lnum)
{
return plines_win_nofill(curwin, lnum, true);
}
int plines_win_nofill(
win_T *const wp,
const linenr_T lnum,
const bool winheight // when true limit to window height
)
{
if (!wp->w_p_wrap) {
return 1;
}
if (wp->w_width_inner == 0) {
return 1;
}
// A folded lines is handled just like an empty line.
if (lineFolded(wp, lnum)) {
return 1;
}
const int lines = plines_win_nofold(wp, lnum);
if (winheight && lines > wp->w_height_inner) {
return wp->w_height_inner;
}
return lines;
}
/*
* Return number of window lines physical line "lnum" will occupy in window
* "wp". Does not care about folding, 'wrap' or 'diff'.
*/
int plines_win_nofold(win_T *wp, linenr_T lnum)
{
char_u *s;
unsigned int col;
int width;
s = ml_get_buf(wp->w_buffer, lnum, FALSE);
if (*s == NUL) /* empty line */
return 1;
col = win_linetabsize(wp, s, (colnr_T)MAXCOL);
// If list mode is on, then the '$' at the end of the line may take up one
// extra column.
if (wp->w_p_list && wp->w_p_lcs_chars.eol != NUL) {
col += 1;
}
/*
* Add column offset for 'number', 'relativenumber' and 'foldcolumn'.
*/
width = wp->w_width_inner - win_col_off(wp);
if (width <= 0 || col > 32000) {
return 32000; // bigger than the number of screen columns
}
if (col <= (unsigned int)width) {
return 1;
}
col -= (unsigned int)width;
width += win_col_off2(wp);
assert(col <= INT_MAX && (int)col < INT_MAX - (width -1));
return ((int)col + (width - 1)) / width + 1;
}
/*
* Like plines_win(), but only reports the number of physical screen lines
* used from the start of the line to the given column number.
*/
int plines_win_col(win_T *wp, linenr_T lnum, long column)
{
// Check for filler lines above this buffer line. When folded the result
// is one line anyway.
int lines = diff_check_fill(wp, lnum);
if (!wp->w_p_wrap)
return lines + 1;
if (wp->w_width_inner == 0) {
return lines + 1;
}
char_u *line = ml_get_buf(wp->w_buffer, lnum, false);
char_u *s = line;
colnr_T col = 0;
while (*s != NUL && --column >= 0) {
col += win_lbr_chartabsize(wp, line, s, col, NULL);
MB_PTR_ADV(s);
}
// If *s is a TAB, and the TAB is not displayed as ^I, and we're not in
// INSERT mode, then col must be adjusted so that it represents the last
// screen position of the TAB. This only fixes an error when the TAB wraps
// from one screen line to the next (when 'columns' is not a multiple of
// 'ts') -- webb.
if (*s == TAB && (State & NORMAL)
&& (!wp->w_p_list || wp->w_p_lcs_chars.tab1)) {
col += win_lbr_chartabsize(wp, line, s, col, NULL) - 1;
}
// Add column offset for 'number', 'relativenumber', 'foldcolumn', etc.
int width = wp->w_width_inner - win_col_off(wp);
if (width <= 0) {
return 9999;
}
lines += 1;
if (col > width)
lines += (col - width) / (width + win_col_off2(wp)) + 1;
return lines;
}
int plines_m_win(win_T *wp, linenr_T first, linenr_T last)
{
int count = 0;
while (first <= last) {
// Check if there are any really folded lines, but also included lines
// that are maybe folded.
linenr_T x = foldedCount(wp, first, NULL);
if (x > 0) {
++count; /* count 1 for "+-- folded" line */
first += x;
} else {
if (first == wp->w_topline) {
count += plines_win_nofill(wp, first, true) + wp->w_topfill;
} else {
count += plines_win(wp, first, true);
}
first++;
}
}
return count;
}
/*
* Insert string "p" at the cursor position. Stops at a NUL byte.
* Handles Replace mode and multi-byte characters.
*/
void ins_bytes(char_u *p)
{
ins_bytes_len(p, STRLEN(p));
}
/// Insert string "p" with length "len" at the cursor position.
/// Handles Replace mode and multi-byte characters.
void ins_bytes_len(char_u *p, size_t len)
{
if (has_mbyte) {
size_t n;
for (size_t i = 0; i < len; i += n) {
if (enc_utf8) {
// avoid reading past p[len]
n = (size_t)utfc_ptr2len_len(p + i, (int)(len - i));
} else {
n = (size_t)(*mb_ptr2len)(p + i);
}
ins_char_bytes(p + i, n);
}
} else {
for (size_t i = 0; i < len; i++) {
ins_char(p[i]);
}
}
}
/// Insert or replace a single character at the cursor position.
/// When in REPLACE or VREPLACE mode, replace any existing character.
/// Caller must have prepared for undo.
/// For multi-byte characters we get the whole character, the caller must
/// convert bytes to a character.
void ins_char(int c)
{
char_u buf[MB_MAXBYTES + 1];
size_t n = (size_t)utf_char2bytes(c, buf);
// When "c" is 0x100, 0x200, etc. we don't want to insert a NUL byte.
// Happens for CTRL-Vu9900.
if (buf[0] == 0) {
buf[0] = '\n';
}
ins_char_bytes(buf, n);
}
void ins_char_bytes(char_u *buf, size_t charlen)
{
// Break tabs if needed.
if (virtual_active() && curwin->w_cursor.coladd > 0) {
coladvance_force(getviscol());
}
size_t col = (size_t)curwin->w_cursor.col;
linenr_T lnum = curwin->w_cursor.lnum;
char_u *oldp = ml_get(lnum);
size_t linelen = STRLEN(oldp) + 1; // length of old line including NUL
// The lengths default to the values for when not replacing.
size_t oldlen = 0; // nr of bytes inserted
size_t newlen = charlen; // nr of bytes deleted (0 when not replacing)
if (State & REPLACE_FLAG) {
if (State & VREPLACE_FLAG) {
// Disable 'list' temporarily, unless 'cpo' contains the 'L' flag.
// Returns the old value of list, so when finished,
// curwin->w_p_list should be set back to this.
int old_list = curwin->w_p_list;
if (old_list && vim_strchr(p_cpo, CPO_LISTWM) == NULL) {
curwin->w_p_list = false;
}
// In virtual replace mode each character may replace one or more
// characters (zero if it's a TAB). Count the number of bytes to
// be deleted to make room for the new character, counting screen
// cells. May result in adding spaces to fill a gap.
colnr_T vcol;
getvcol(curwin, &curwin->w_cursor, NULL, &vcol, NULL);
colnr_T new_vcol = vcol + chartabsize(buf, vcol);
while (oldp[col + oldlen] != NUL && vcol < new_vcol) {
vcol += chartabsize(oldp + col + oldlen, vcol);
// Don't need to remove a TAB that takes us to the right
// position.
if (vcol > new_vcol && oldp[col + oldlen] == TAB) {
break;
}
oldlen += (size_t)(*mb_ptr2len)(oldp + col + oldlen);
// Deleted a bit too much, insert spaces.
if (vcol > new_vcol) {
newlen += (size_t)(vcol - new_vcol);
}
}
curwin->w_p_list = old_list;
} else if (oldp[col] != NUL) {
// normal replace
oldlen = (size_t)(*mb_ptr2len)(oldp + col);
}
/* Push the replaced bytes onto the replace stack, so that they can be
* put back when BS is used. The bytes of a multi-byte character are
* done the other way around, so that the first byte is popped off
* first (it tells the byte length of the character). */
replace_push(NUL);
for (size_t i = 0; i < oldlen; i++) {
if (has_mbyte) {
i += (size_t)replace_push_mb(oldp + col + i) - 1;
} else {
replace_push(oldp[col + i]);
}
}
}
char_u *newp = xmalloc((size_t)(linelen + newlen - oldlen));
// Copy bytes before the cursor.
if (col > 0) {
memmove(newp, oldp, (size_t)col);
}
// Copy bytes after the changed character(s).
char_u *p = newp + col;
if (linelen > col + oldlen) {
memmove(p + newlen, oldp + col + oldlen,
(size_t)(linelen - col - oldlen));
}
// Insert or overwrite the new character.
memmove(p, buf, charlen);
// Fill with spaces when necessary.
for (size_t i = charlen; i < newlen; i++) {
p[i] = ' ';
}
// Replace the line in the buffer.
ml_replace(lnum, newp, false);
// mark the buffer as changed and prepare for displaying
changed_bytes(lnum, (colnr_T)col);
/*
* If we're in Insert or Replace mode and 'showmatch' is set, then briefly
* show the match for right parens and braces.
*/
if (p_sm && (State & INSERT)
&& msg_silent == 0
&& !ins_compl_active()
) {
showmatch(utf_ptr2char(buf));
}
if (!p_ri || (State & REPLACE_FLAG)) {
// Normal insert: move cursor right
curwin->w_cursor.col += (int)charlen;
}
/*
* TODO: should try to update w_row here, to avoid recomputing it later.
*/
}
/*
* Insert a string at the cursor position.
* Note: Does NOT handle Replace mode.
* Caller must have prepared for undo.
*/
void ins_str(char_u *s)
{
char_u *oldp, *newp;
int newlen = (int)STRLEN(s);
int oldlen;
colnr_T col;
linenr_T lnum = curwin->w_cursor.lnum;
if (virtual_active() && curwin->w_cursor.coladd > 0)
coladvance_force(getviscol());
col = curwin->w_cursor.col;
oldp = ml_get(lnum);
oldlen = (int)STRLEN(oldp);
newp = (char_u *) xmalloc((size_t)(oldlen + newlen + 1));
if (col > 0)
memmove(newp, oldp, (size_t)col);
memmove(newp + col, s, (size_t)newlen);
memmove(newp + col + newlen, oldp + col, (size_t)(oldlen - col + 1));
ml_replace(lnum, newp, false);
changed_bytes(lnum, col);
curwin->w_cursor.col += newlen;
}
// Delete one character under the cursor.
// If "fixpos" is true, don't leave the cursor on the NUL after the line.
// Caller must have prepared for undo.
//
// return FAIL for failure, OK otherwise
int del_char(bool fixpos)
{
if (has_mbyte) {
/* Make sure the cursor is at the start of a character. */
mb_adjust_cursor();
if (*get_cursor_pos_ptr() == NUL)
return FAIL;
return del_chars(1L, fixpos);
}
return del_bytes(1, fixpos, true);
}
/*
* Like del_bytes(), but delete characters instead of bytes.
*/
int del_chars(long count, int fixpos)
{
int bytes = 0;
long i;
char_u *p;
int l;
p = get_cursor_pos_ptr();
for (i = 0; i < count && *p != NUL; ++i) {
l = (*mb_ptr2len)(p);
bytes += l;
p += l;
}
return del_bytes(bytes, fixpos, TRUE);
}
/// Delete "count" bytes under the cursor.
/// If "fixpos" is true, don't leave the cursor on the NUL after the line.
/// Caller must have prepared for undo.
///
/// @param count number of bytes to be deleted
/// @param fixpos_arg leave the cursor on the NUL after the line
/// @param use_delcombine 'delcombine' option applies
///
/// @return FAIL for failure, OK otherwise
int del_bytes(colnr_T count, bool fixpos_arg, bool use_delcombine)
{
linenr_T lnum = curwin->w_cursor.lnum;
colnr_T col = curwin->w_cursor.col;
bool fixpos = fixpos_arg;
char_u *oldp = ml_get(lnum);
colnr_T oldlen = (colnr_T)STRLEN(oldp);
// Can't do anything when the cursor is on the NUL after the line.
if (col >= oldlen) {
return FAIL;
}
// If "count" is zero there is nothing to do.
if (count == 0) {
return OK;
}
// If "count" is negative the caller must be doing something wrong.
if (count < 1) {
IEMSGN("E950: Invalid count for del_bytes(): %ld", count);
return FAIL;
}
/* If 'delcombine' is set and deleting (less than) one character, only
* delete the last combining character. */
if (p_deco && use_delcombine && enc_utf8
&& utfc_ptr2len(oldp + col) >= count) {
int cc[MAX_MCO];
int n;
(void)utfc_ptr2char(oldp + col, cc);
if (cc[0] != NUL) {
/* Find the last composing char, there can be several. */
n = col;
do {
col = n;
count = utf_ptr2len(oldp + n);
n += count;
} while (UTF_COMPOSINGLIKE(oldp + col, oldp + n));
fixpos = false;
}
}
// When count is too big, reduce it.
int movelen = oldlen - col - count + 1; // includes trailing NUL
if (movelen <= 1) {
/*
* If we just took off the last character of a non-blank line, and
* fixpos is TRUE, we don't want to end up positioned at the NUL,
* unless "restart_edit" is set or 'virtualedit' contains "onemore".
*/
if (col > 0 && fixpos && restart_edit == 0
&& (ve_flags & VE_ONEMORE) == 0
) {
--curwin->w_cursor.col;
curwin->w_cursor.coladd = 0;
curwin->w_cursor.col -= utf_head_off(oldp, oldp + curwin->w_cursor.col);
}
count = oldlen - col;
movelen = 1;
}
// If the old line has been allocated the deletion can be done in the
// existing line. Otherwise a new line has to be allocated.
bool was_alloced = ml_line_alloced(); // check if oldp was allocated
char_u *newp;
if (was_alloced) {
newp = oldp; // use same allocated memory
} else { // need to allocate a new line
newp = xmalloc((size_t)(oldlen + 1 - count));
memmove(newp, oldp, (size_t)col);
}
memmove(newp + col, oldp + col + count, (size_t)movelen);
if (!was_alloced) {
ml_replace(lnum, newp, false);
}
/* mark the buffer as changed and prepare for displaying */
changed_bytes(lnum, curwin->w_cursor.col);
return OK;
}
/*
* Delete from cursor to end of line.
* Caller must have prepared for undo.
*/
void
truncate_line (
int fixpos /* if TRUE fix the cursor position when done */
)
{
char_u *newp;
linenr_T lnum = curwin->w_cursor.lnum;
colnr_T col = curwin->w_cursor.col;
if (col == 0) {
newp = vim_strsave((char_u *)"");
} else {
newp = vim_strnsave(ml_get(lnum), (size_t)col);
}
ml_replace(lnum, newp, false);
/* mark the buffer as changed and prepare for displaying */
changed_bytes(lnum, curwin->w_cursor.col);
/*
* If "fixpos" is TRUE we don't want to end up positioned at the NUL.
*/
if (fixpos && curwin->w_cursor.col > 0)
--curwin->w_cursor.col;
}
/*
* Delete "nlines" lines at the cursor.
* Saves the lines for undo first if "undo" is TRUE.
*/
void
del_lines (
long nlines, /* number of lines to delete */
int undo /* if TRUE, prepare for undo */
)
{
long n;
linenr_T first = curwin->w_cursor.lnum;
if (nlines <= 0)
return;
/* save the deleted lines for undo */
if (undo && u_savedel(first, nlines) == FAIL)
return;
for (n = 0; n < nlines; ) {
if (curbuf->b_ml.ml_flags & ML_EMPTY) /* nothing to delete */
break;
ml_delete(first, TRUE);
++n;
/* If we delete the last line in the file, stop */
if (first > curbuf->b_ml.ml_line_count)
break;
}
/* Correct the cursor position before calling deleted_lines_mark(), it may
* trigger a callback to display the cursor. */
curwin->w_cursor.col = 0;
check_cursor_lnum();
/* adjust marks, mark the buffer as changed and prepare for displaying */
deleted_lines_mark(first, n);
}
int gchar_pos(pos_T *pos)
{
// When searching columns is sometimes put at the end of a line.
if (pos->col == MAXCOL) {
return NUL;
}
return utf_ptr2char(ml_get_pos(pos));
}
/*
* Call this function when something in the current buffer is changed.
*
* Most often called through changed_bytes() and changed_lines(), which also
* mark the area of the display to be redrawn.
*
* Careful: may trigger autocommands that reload the buffer.
*/
void changed(void)
{
if (!curbuf->b_changed) {
int save_msg_scroll = msg_scroll;
/* Give a warning about changing a read-only file. This may also
* check-out the file, thus change "curbuf"! */
change_warning(0);
/* Create a swap file if that is wanted.
* Don't do this for "nofile" and "nowrite" buffer types. */
if (curbuf->b_may_swap
&& !bt_dontwrite(curbuf)
) {
int save_need_wait_return = need_wait_return;
need_wait_return = false;
ml_open_file(curbuf);
/* The ml_open_file() can cause an ATTENTION message.
* Wait two seconds, to make sure the user reads this unexpected
* message. Since we could be anywhere, call wait_return() now,
* and don't let the emsg() set msg_scroll. */
if (need_wait_return && emsg_silent == 0) {
ui_flush();
os_delay(2000L, true);
wait_return(TRUE);
msg_scroll = save_msg_scroll;
} else {
need_wait_return = save_need_wait_return;
}
}
changed_int();
}
buf_inc_changedtick(curbuf);
// If a pattern is highlighted, the position may now be invalid.
highlight_match = false;
}
/*
* Internal part of changed(), no user interaction.
*/
void changed_int(void)
{
curbuf->b_changed = true;
ml_setflags(curbuf);
check_status(curbuf);
redraw_tabline = TRUE;
need_maketitle = TRUE; /* set window title later */
}
/*
* Changed bytes within a single line for the current buffer.
* - marks the windows on this buffer to be redisplayed
* - marks the buffer changed by calling changed()
* - invalidates cached values
* Careful: may trigger autocommands that reload the buffer.
*/
void changed_bytes(linenr_T lnum, colnr_T col)
{
changedOneline(curbuf, lnum);
changed_common(lnum, col, lnum + 1, 0L);
// notify any channels that are watching
if (kv_size(curbuf->update_channels)) {
buf_updates_send_changes(curbuf, lnum, 1, 1, true);
}
/* Diff highlighting in other diff windows may need to be updated too. */
if (curwin->w_p_diff) {
linenr_T wlnum;
FOR_ALL_WINDOWS_IN_TAB(wp, curtab) {
if (wp->w_p_diff && wp != curwin) {
redraw_win_later(wp, VALID);
wlnum = diff_lnum_win(lnum, wp);
if (wlnum > 0)
changedOneline(wp->w_buffer, wlnum);
}
}
}
}
static void changedOneline(buf_T *buf, linenr_T lnum)
{
if (buf->b_mod_set) {
/* find the maximum area that must be redisplayed */
if (lnum < buf->b_mod_top)
buf->b_mod_top = lnum;
else if (lnum >= buf->b_mod_bot)
buf->b_mod_bot = lnum + 1;
} else {
/* set the area that must be redisplayed to one line */
buf->b_mod_set = true;
buf->b_mod_top = lnum;
buf->b_mod_bot = lnum + 1;
buf->b_mod_xlines = 0;
}
}
/*
* Appended "count" lines below line "lnum" in the current buffer.
* Must be called AFTER the change and after mark_adjust().
* Takes care of marking the buffer to be redrawn and sets the changed flag.
*/
void appended_lines(linenr_T lnum, long count)
{
changed_lines(lnum + 1, 0, lnum + 1, count, true);
}
/*
* Like appended_lines(), but adjust marks first.
*/
void appended_lines_mark(linenr_T lnum, long count)
{
// Skip mark_adjust when adding a line after the last one, there can't
// be marks there. But it's still needed in diff mode.
if (lnum + count < curbuf->b_ml.ml_line_count || curwin->w_p_diff) {
mark_adjust(lnum + 1, (linenr_T)MAXLNUM, count, 0L, false);
}
changed_lines(lnum + 1, 0, lnum + 1, count, true);
}
/*
* Deleted "count" lines at line "lnum" in the current buffer.
* Must be called AFTER the change and after mark_adjust().
* Takes care of marking the buffer to be redrawn and sets the changed flag.
*/
void deleted_lines(linenr_T lnum, long count)
{
changed_lines(lnum, 0, lnum + count, -count, true);
}
/*
* Like deleted_lines(), but adjust marks first.
* Make sure the cursor is on a valid line before calling, a GUI callback may
* be triggered to display the cursor.
*/
void deleted_lines_mark(linenr_T lnum, long count)
{
mark_adjust(lnum, (linenr_T)(lnum + count - 1), (long)MAXLNUM, -count, false);
changed_lines(lnum, 0, lnum + count, -count, true);
}
/*
* Changed lines for the current buffer.
* Must be called AFTER the change and after mark_adjust().
* - mark the buffer changed by calling changed()
* - mark the windows on this buffer to be redisplayed
* - invalidate cached values
* "lnum" is the first line that needs displaying, "lnume" the first line
* below the changed lines (BEFORE the change).
* When only inserting lines, "lnum" and "lnume" are equal.
* Takes care of calling changed() and updating b_mod_*.
* Careful: may trigger autocommands that reload the buffer.
*/
void
changed_lines(
linenr_T lnum, // first line with change
colnr_T col, // column in first line with change
linenr_T lnume, // line below last changed line
long xtra, // number of extra lines (negative when deleting)
bool do_buf_event // some callers like undo/redo call changed_lines()
// and then increment changedtick *again*. This flag
// allows these callers to send the nvim_buf_lines_event
// events after they're done modifying changedtick.
)
{
changed_lines_buf(curbuf, lnum, lnume, xtra);
if (xtra == 0 && curwin->w_p_diff && !diff_internal()) {
// When the number of lines doesn't change then mark_adjust() isn't
// called and other diff buffers still need to be marked for
// displaying.
linenr_T wlnum;
FOR_ALL_WINDOWS_IN_TAB(wp, curtab) {
if (wp->w_p_diff && wp != curwin) {
redraw_win_later(wp, VALID);
wlnum = diff_lnum_win(lnum, wp);
if (wlnum > 0) {
changed_lines_buf(wp->w_buffer, wlnum,
lnume - lnum + wlnum, 0L);
}
}
}
}
changed_common(lnum, col, lnume, xtra);
if (do_buf_event && kv_size(curbuf->update_channels)) {
int64_t num_added = (int64_t)(lnume + xtra - lnum);
int64_t num_removed = lnume - lnum;
buf_updates_send_changes(curbuf, lnum, num_added, num_removed, true);
}
}
/// Mark line range in buffer as changed.
///
/// @param buf the buffer where lines were changed
/// @param lnum first line with change
/// @param lnume line below last changed line
/// @param xtra number of extra lines (negative when deleting)
void changed_lines_buf(buf_T *buf, linenr_T lnum, linenr_T lnume, long xtra)
{
if (buf->b_mod_set) {
/* find the maximum area that must be redisplayed */
if (lnum < buf->b_mod_top)
buf->b_mod_top = lnum;
if (lnum < buf->b_mod_bot) {
/* adjust old bot position for xtra lines */
buf->b_mod_bot += xtra;
if (buf->b_mod_bot < lnum)
buf->b_mod_bot = lnum;
}
if (lnume + xtra > buf->b_mod_bot)
buf->b_mod_bot = lnume + xtra;
buf->b_mod_xlines += xtra;
} else {
/* set the area that must be redisplayed */
buf->b_mod_set = true;
buf->b_mod_top = lnum;
buf->b_mod_bot = lnume + xtra;
buf->b_mod_xlines = xtra;
}
}
/*
* Common code for when a change is was made.
* See changed_lines() for the arguments.
* Careful: may trigger autocommands that reload the buffer.
*/
static void changed_common(linenr_T lnum, colnr_T col, linenr_T lnume, long xtra)
{
int i;
int cols;
pos_T *p;
int add;
/* mark the buffer as modified */
changed();
if (curwin->w_p_diff && diff_internal()) {
curtab->tp_diff_update = true;
}
/* set the '. mark */
if (!cmdmod.keepjumps) {
RESET_FMARK(&curbuf->b_last_change, ((pos_T) {lnum, col, 0}), 0);
/* Create a new entry if a new undo-able change was started or we
* don't have an entry yet. */
if (curbuf->b_new_change || curbuf->b_changelistlen == 0) {
if (curbuf->b_changelistlen == 0)
add = TRUE;
else {
/* Don't create a new entry when the line number is the same
* as the last one and the column is not too far away. Avoids
* creating many entries for typing "xxxxx". */
p = &curbuf->b_changelist[curbuf->b_changelistlen - 1].mark;
if (p->lnum != lnum)
add = TRUE;
else {
cols = comp_textwidth(FALSE);
if (cols == 0)
cols = 79;
add = (p->col + cols < col || col + cols < p->col);
}
}
if (add) {
/* This is the first of a new sequence of undo-able changes
* and it's at some distance of the last change. Use a new
* position in the changelist. */
curbuf->b_new_change = false;
if (curbuf->b_changelistlen == JUMPLISTSIZE) {
/* changelist is full: remove oldest entry */
curbuf->b_changelistlen = JUMPLISTSIZE - 1;
memmove(curbuf->b_changelist, curbuf->b_changelist + 1,
sizeof(curbuf->b_changelist[0]) * (JUMPLISTSIZE - 1));
FOR_ALL_TAB_WINDOWS(tp, wp) {
/* Correct position in changelist for other windows on
* this buffer. */
if (wp->w_buffer == curbuf && wp->w_changelistidx > 0) {
--wp->w_changelistidx;
}
}
}
FOR_ALL_TAB_WINDOWS(tp, wp) {
/* For other windows, if the position in the changelist is
* at the end it stays at the end. */
if (wp->w_buffer == curbuf
&& wp->w_changelistidx == curbuf->b_changelistlen) {
++wp->w_changelistidx;
}
}
++curbuf->b_changelistlen;
}
}
curbuf->b_changelist[curbuf->b_changelistlen - 1] =
curbuf->b_last_change;
/* The current window is always after the last change, so that "g,"
* takes you back to it. */
curwin->w_changelistidx = curbuf->b_changelistlen;
}
FOR_ALL_TAB_WINDOWS(tp, wp) {
if (wp->w_buffer == curbuf) {
/* Mark this window to be redrawn later. */
if (wp->w_redr_type < VALID)
wp->w_redr_type = VALID;
/* Check if a change in the buffer has invalidated the cached
* values for the cursor. */
/*
* Update the folds for this window. Can't postpone this, because
* a following operator might work on the whole fold: ">>dd".
*/
foldUpdate(wp, lnum, lnume + xtra - 1);
/* The change may cause lines above or below the change to become
* included in a fold. Set lnum/lnume to the first/last line that
* might be displayed differently.
* Set w_cline_folded here as an efficient way to update it when
* inserting lines just above a closed fold. */
bool folded = hasFoldingWin(wp, lnum, &lnum, NULL, false, NULL);
if (wp->w_cursor.lnum == lnum)
wp->w_cline_folded = folded;
folded = hasFoldingWin(wp, lnume, NULL, &lnume, false, NULL);
if (wp->w_cursor.lnum == lnume)
wp->w_cline_folded = folded;
/* If the changed line is in a range of previously folded lines,
* compare with the first line in that range. */
if (wp->w_cursor.lnum <= lnum) {
i = find_wl_entry(wp, lnum);
if (i >= 0 && wp->w_cursor.lnum > wp->w_lines[i].wl_lnum)
changed_line_abv_curs_win(wp);
}
if (wp->w_cursor.lnum > lnum)
changed_line_abv_curs_win(wp);
else if (wp->w_cursor.lnum == lnum && wp->w_cursor.col >= col)
changed_cline_bef_curs_win(wp);
if (wp->w_botline >= lnum) {
/* Assume that botline doesn't change (inserted lines make
* other lines scroll down below botline). */
approximate_botline_win(wp);
}
/* Check if any w_lines[] entries have become invalid.
* For entries below the change: Correct the lnums for
* inserted/deleted lines. Makes it possible to stop displaying
* after the change. */
for (i = 0; i < wp->w_lines_valid; ++i)
if (wp->w_lines[i].wl_valid) {
if (wp->w_lines[i].wl_lnum >= lnum) {
if (wp->w_lines[i].wl_lnum < lnume) {
/* line included in change */
wp->w_lines[i].wl_valid = FALSE;
} else if (xtra != 0) {
/* line below change */
wp->w_lines[i].wl_lnum += xtra;
wp->w_lines[i].wl_lastlnum += xtra;
}
} else if (wp->w_lines[i].wl_lastlnum >= lnum) {
/* change somewhere inside this range of folded lines,
* may need to be redrawn */
wp->w_lines[i].wl_valid = FALSE;
}
}
/* Take care of side effects for setting w_topline when folds have
* changed. Esp. when the buffer was changed in another window. */
if (hasAnyFolding(wp))
set_topline(wp, wp->w_topline);
// relative numbering may require updating more
if (wp->w_p_rnu) {
redraw_win_later(wp, SOME_VALID);
}
}
}
/* Call update_screen() later, which checks out what needs to be redrawn,
* since it notices b_mod_set and then uses b_mod_*. */
if (must_redraw < VALID)
must_redraw = VALID;
/* when the cursor line is changed always trigger CursorMoved */
if (lnum <= curwin->w_cursor.lnum
&& lnume + (xtra < 0 ? -xtra : xtra) > curwin->w_cursor.lnum)
curwin->w_last_cursormoved.lnum = 0;
}
/*
* unchanged() is called when the changed flag must be reset for buffer 'buf'
*/
void
unchanged (
buf_T *buf,
int ff /* also reset 'fileformat' */
)
{
if (buf->b_changed || (ff && file_ff_differs(buf, false))) {
buf->b_changed = false;
ml_setflags(buf);
if (ff)
save_file_ff(buf);
check_status(buf);
redraw_tabline = TRUE;
need_maketitle = TRUE; /* set window title later */
}
buf_inc_changedtick(buf);
}
/*
* check_status: called when the status bars for the buffer 'buf'
* need to be updated
*/
void check_status(buf_T *buf)
{
FOR_ALL_WINDOWS_IN_TAB(wp, curtab) {
if (wp->w_buffer == buf && wp->w_status_height) {
wp->w_redr_status = TRUE;
if (must_redraw < VALID) {
must_redraw = VALID;
}
}
}
}
/*
* If the file is readonly, give a warning message with the first change.
* Don't do this for autocommands.
* Don't use emsg(), because it flushes the macro buffer.
* If we have undone all changes b_changed will be false, but "b_did_warn"
* will be true.
* Careful: may trigger autocommands that reload the buffer.
*/
void
change_warning (
int col /* column for message; non-zero when in insert
mode and 'showmode' is on */
)
{
static char *w_readonly = N_("W10: Warning: Changing a readonly file");
if (curbuf->b_did_warn == false
&& curbufIsChanged() == 0
&& !autocmd_busy
&& curbuf->b_p_ro) {
++curbuf_lock;
apply_autocmds(EVENT_FILECHANGEDRO, NULL, NULL, FALSE, curbuf);
--curbuf_lock;
if (!curbuf->b_p_ro)
return;
/*
* Do what msg() does, but with a column offset if the warning should
* be after the mode message.
*/
msg_start();
if (msg_row == Rows - 1)
msg_col = col;
msg_source(HL_ATTR(HLF_W));
MSG_PUTS_ATTR(_(w_readonly), HL_ATTR(HLF_W) | MSG_HIST);
set_vim_var_string(VV_WARNINGMSG, _(w_readonly), -1);
msg_clr_eos();
(void)msg_end();
if (msg_silent == 0 && !silent_mode && ui_active()) {
ui_flush();
os_delay(1000L, true); /* give the user time to think about it */
}
curbuf->b_did_warn = true;
redraw_cmdline = FALSE; /* don't redraw and erase the message */
if (msg_row < Rows - 1)
showmode();
}
}
/// Ask for a reply from the user, 'y' or 'n'
///
/// No other characters are accepted, the message is repeated until a valid
/// reply is entered or <C-c> is hit.
///
/// @param[in] str Prompt: question to ask user. Is always followed by
/// " (y/n)?".
/// @param[in] direct Determines what function to use to get user input. If
/// true then ui_inchar() will be used, otherwise vgetc().
/// I.e. when direct is true then characters are obtained
/// directly from the user without buffers involved.
///
/// @return 'y' or 'n'. Last is also what will be returned in case of interrupt.
int ask_yesno(const char *const str, const bool direct)
{
const int save_State = State;
no_wait_return++;
State = CONFIRM; // Mouse behaves like with :confirm.
setmouse(); // Disable mouse in xterm.
no_mapping++;
int r = ' ';
while (r != 'y' && r != 'n') {
// Same highlighting as for wait_return.
smsg_attr(HL_ATTR(HLF_R), "%s (y/n)?", str);
if (direct) {
r = get_keystroke();
} else {
r = plain_vgetc();
}
if (r == Ctrl_C || r == ESC) {
r = 'n';
}
msg_putchar(r); // Show what you typed.
ui_flush();
}
no_wait_return--;
State = save_State;
setmouse();
no_mapping--;
return r;
}
/*
* Return TRUE if "c" is a mouse key.
*/
int is_mouse_key(int c)
{
return c == K_LEFTMOUSE
|| c == K_LEFTMOUSE_NM
|| c == K_LEFTDRAG
|| c == K_LEFTRELEASE
|| c == K_LEFTRELEASE_NM
|| c == K_MIDDLEMOUSE
|| c == K_MIDDLEDRAG
|| c == K_MIDDLERELEASE
|| c == K_RIGHTMOUSE
|| c == K_RIGHTDRAG
|| c == K_RIGHTRELEASE
|| c == K_MOUSEDOWN
|| c == K_MOUSEUP
|| c == K_MOUSELEFT
|| c == K_MOUSERIGHT
|| c == K_X1MOUSE
|| c == K_X1DRAG
|| c == K_X1RELEASE
|| c == K_X2MOUSE
|| c == K_X2DRAG
|| c == K_X2RELEASE;
}
/*
* Get a key stroke directly from the user.
* Ignores mouse clicks and scrollbar events, except a click for the left
* button (used at the more prompt).
* Doesn't use vgetc(), because it syncs undo and eats mapped characters.
* Disadvantage: typeahead is ignored.
* Translates the interrupt character for unix to ESC.
*/
int get_keystroke(void)
{
char_u *buf = NULL;
int buflen = 150;
int maxlen;
int len = 0;
int n;
int save_mapped_ctrl_c = mapped_ctrl_c;
int waited = 0;
mapped_ctrl_c = 0; // mappings are not used here
for (;; ) {
// flush output before waiting
ui_flush();
/* Leave some room for check_termcode() to insert a key code into (max
* 5 chars plus NUL). And fix_input_buffer() can triple the number of
* bytes. */
maxlen = (buflen - 6 - len) / 3;
if (buf == NULL) {
buf = xmalloc((size_t)buflen);
} else if (maxlen < 10) {
// Need some more space. This might happen when receiving a long
// escape sequence.
buflen += 100;
buf = xrealloc(buf, (size_t)buflen);
maxlen = (buflen - 6 - len) / 3;
}
/* First time: blocking wait. Second time: wait up to 100ms for a
* terminal code to complete. */
n = os_inchar(buf + len, maxlen, len == 0 ? -1L : 100L, 0);
if (n > 0) {
// Replace zero and CSI by a special key code.
n = fix_input_buffer(buf + len, n);
len += n;
waited = 0;
} else if (len > 0)
++waited; /* keep track of the waiting time */
if (n == KEYLEN_REMOVED) { /* key code removed */
if (must_redraw != 0 && !need_wait_return && (State & CMDLINE) == 0) {
/* Redrawing was postponed, do it now. */
update_screen(0);
setcursor(); /* put cursor back where it belongs */
}
continue;
}
if (n > 0) /* found a termcode: adjust length */
len = n;
if (len == 0) /* nothing typed yet */
continue;
/* Handle modifier and/or special key code. */
n = buf[0];
if (n == K_SPECIAL) {
n = TO_SPECIAL(buf[1], buf[2]);
if (buf[1] == KS_MODIFIER
|| n == K_IGNORE
|| (is_mouse_key(n) && n != K_LEFTMOUSE)
) {
if (buf[1] == KS_MODIFIER)
mod_mask = buf[2];
len -= 3;
if (len > 0)
memmove(buf, buf + 3, (size_t)len);
continue;
}
break;
}
if (MB_BYTE2LEN(n) > len) {
// more bytes to get.
continue;
}
buf[len >= buflen ? buflen - 1 : len] = NUL;
n = utf_ptr2char(buf);
break;
}
xfree(buf);
mapped_ctrl_c = save_mapped_ctrl_c;
return n;
}
/*
* Get a number from the user.
* When "mouse_used" is not NULL allow using the mouse.
*/
int
get_number (
int colon, /* allow colon to abort */
int *mouse_used
)
{
int n = 0;
int c;
int typed = 0;
if (mouse_used != NULL)
*mouse_used = FALSE;
/* When not printing messages, the user won't know what to type, return a
* zero (as if CR was hit). */
if (msg_silent != 0)
return 0;
no_mapping++;
for (;; ) {
ui_cursor_goto(msg_row, msg_col);
c = safe_vgetc();
if (ascii_isdigit(c)) {
n = n * 10 + c - '0';
msg_putchar(c);
++typed;
} else if (c == K_DEL || c == K_KDEL || c == K_BS || c == Ctrl_H) {
if (typed > 0) {
MSG_PUTS("\b \b");
--typed;
}
n /= 10;
} else if (mouse_used != NULL && c == K_LEFTMOUSE) {
*mouse_used = TRUE;
n = mouse_row + 1;
break;
} else if (n == 0 && c == ':' && colon) {
stuffcharReadbuff(':');
if (!exmode_active)
cmdline_row = msg_row;
skip_redraw = TRUE; /* skip redraw once */
do_redraw = FALSE;
break;
} else if (c == CAR || c == NL || c == Ctrl_C || c == ESC)
break;
}
no_mapping--;
return n;
}
/*
* Ask the user to enter a number.
* When "mouse_used" is not NULL allow using the mouse and in that case return
* the line number.
*/
int prompt_for_number(int *mouse_used)
{
int i;
int save_cmdline_row;
int save_State;
/* When using ":silent" assume that <CR> was entered. */
if (mouse_used != NULL)
MSG_PUTS(_("Type number and <Enter> or click with mouse (empty cancels): "));
else
MSG_PUTS(_("Type number and <Enter> (empty cancels): "));
/* Set the state such that text can be selected/copied/pasted and we still
* get mouse events. */
save_cmdline_row = cmdline_row;
cmdline_row = 0;
save_State = State;
State = ASKMORE; // prevents a screen update when using a timer
i = get_number(TRUE, mouse_used);
if (KeyTyped) {
/* don't call wait_return() now */
/* msg_putchar('\n'); */
cmdline_row = msg_row - 1;
need_wait_return = FALSE;
msg_didany = FALSE;
msg_didout = FALSE;
} else
cmdline_row = save_cmdline_row;
State = save_State;
return i;
}
void msgmore(long n)
{
long pn;
if (global_busy /* no messages now, wait until global is finished */
|| !messaging()) /* 'lazyredraw' set, don't do messages now */
return;
/* We don't want to overwrite another important message, but do overwrite
* a previous "more lines" or "fewer lines" message, so that "5dd" and
* then "put" reports the last action. */
if (keep_msg != NULL && !keep_msg_more)
return;
if (n > 0)
pn = n;
else
pn = -n;
if (pn > p_report) {
if (pn == 1) {
if (n > 0)
STRLCPY(msg_buf, _("1 more line"), MSG_BUF_LEN);
else
STRLCPY(msg_buf, _("1 line less"), MSG_BUF_LEN);
} else {
if (n > 0)
vim_snprintf((char *)msg_buf, MSG_BUF_LEN,
_("%" PRId64 " more lines"), (int64_t)pn);
else
vim_snprintf((char *)msg_buf, MSG_BUF_LEN,
_("%" PRId64 " fewer lines"), (int64_t)pn);
}
if (got_int) {
xstrlcat((char *)msg_buf, _(" (Interrupted)"), MSG_BUF_LEN);
}
if (msg(msg_buf)) {
set_keep_msg(msg_buf, 0);
keep_msg_more = TRUE;
}
}
}
/*
* flush map and typeahead buffers and give a warning for an error
*/
void beep_flush(void)
{
if (emsg_silent == 0) {
flush_buffers(FLUSH_MINIMAL);
vim_beep(BO_ERROR);
}
}
// Give a warning for an error
// val is one of the BO_ values, e.g., BO_OPER
void vim_beep(unsigned val)
{
if (emsg_silent == 0) {
if (!((bo_flags & val) || (bo_flags & BO_ALL))) {
if (p_vb) {
ui_call_visual_bell();
} else {
ui_call_bell();
}
}
/* When 'verbose' is set and we are sourcing a script or executing a
* function give the user a hint where the beep comes from. */
if (vim_strchr(p_debug, 'e') != NULL) {
msg_source(HL_ATTR(HLF_W));
msg_attr(_("Beep!"), HL_ATTR(HLF_W));
}
}
}
#if defined(EXITFREE)
void free_users(void)
{
ga_clear_strings(&ga_users);
}
#endif
/*
* Find all user names for user completion.
* Done only once and then cached.
*/
static void init_users(void)
{
static int lazy_init_done = FALSE;
if (lazy_init_done) {
return;
}
lazy_init_done = TRUE;
os_get_usernames(&ga_users);
}
/*
* Function given to ExpandGeneric() to obtain an user names.
*/
char_u *get_users(expand_T *xp, int idx)
{
init_users();
if (idx < ga_users.ga_len)
return ((char_u **)ga_users.ga_data)[idx];
return NULL;
}
/*
* Check whether name matches a user name. Return:
* 0 if name does not match any user name.
* 1 if name partially matches the beginning of a user name.
* 2 is name fully matches a user name.
*/
int match_user(char_u *name)
{
int n = (int)STRLEN(name);
int result = 0;
init_users();
for (int i = 0; i < ga_users.ga_len; i++) {
if (STRCMP(((char_u **)ga_users.ga_data)[i], name) == 0)
return 2; /* full match */
if (STRNCMP(((char_u **)ga_users.ga_data)[i], name, n) == 0)
result = 1; /* partial match */
}
return result;
}
/// Preserve files and exit.
/// @note IObuff must contain a message.
/// @note This may be called from deadly_signal() in a signal handler, avoid
/// unsafe functions, such as allocating memory.
void preserve_exit(void)
FUNC_ATTR_NORETURN
{
// 'true' when we are sure to exit, e.g., after a deadly signal
static bool really_exiting = false;
// Prevent repeated calls into this method.
if (really_exiting) {
if (input_global_fd() >= 0) {
// normalize stream (#2598)
stream_set_blocking(input_global_fd(), true);
}
exit(2);
}
really_exiting = true;
// Ignore SIGHUP while we are already exiting. #9274
signal_reject_deadly();
mch_errmsg(IObuff);
mch_errmsg("\n");
ui_flush();
ml_close_notmod(); // close all not-modified buffers
FOR_ALL_BUFFERS(buf) {
if (buf->b_ml.ml_mfp != NULL && buf->b_ml.ml_mfp->mf_fname != NULL) {
mch_errmsg((uint8_t *)"Vim: preserving files...\n");
ui_flush();
ml_sync_all(false, false, true); // preserve all swap files
break;
}
}
ml_close_all(false); // close all memfiles, without deleting
mch_errmsg("Vim: Finished.\n");
getout(1);
}
/*
* Check for CTRL-C pressed, but only once in a while.
* Should be used instead of os_breakcheck() for functions that check for
* each line in the file. Calling os_breakcheck() each time takes too much
* time, because it can be a system call.
*/
#ifndef BREAKCHECK_SKIP
# define BREAKCHECK_SKIP 32
#endif
static int breakcheck_count = 0;
void line_breakcheck(void)
{
if (++breakcheck_count >= BREAKCHECK_SKIP) {
breakcheck_count = 0;
os_breakcheck();
}
}
/*
* Like line_breakcheck() but check 10 times less often.
*/
void fast_breakcheck(void)
{
if (++breakcheck_count >= BREAKCHECK_SKIP * 10) {
breakcheck_count = 0;
os_breakcheck();
}
}
/// os_call_shell() wrapper. Handles 'verbose', :profile, and v:shell_error.
/// Invalidates cached tags.
///
/// @return shell command exit code
int call_shell(char_u *cmd, ShellOpts opts, char_u *extra_shell_arg)
{
int retval;
proftime_T wait_time;
if (p_verbose > 3) {
verbose_enter();
smsg(_("Executing command: \"%s\""), cmd == NULL ? p_sh : cmd);
msg_putchar('\n');
verbose_leave();
}
if (do_profiling == PROF_YES) {
prof_child_enter(&wait_time);
}
if (*p_sh == NUL) {
EMSG(_(e_shellempty));
retval = -1;
} else {
// The external command may update a tags file, clear cached tags.
tag_freematch();
retval = os_call_shell(cmd, opts, extra_shell_arg);
}
set_vim_var_nr(VV_SHELL_ERROR, (varnumber_T)retval);
if (do_profiling == PROF_YES) {
prof_child_exit(&wait_time);
}
return retval;
}
/// Get the stdout of an external command.
/// If "ret_len" is NULL replace NUL characters with NL. When "ret_len" is not
/// NULL store the length there.
///
/// @param cmd command to execute
/// @param infile optional input file name
/// @param flags can be kShellOptSilent or 0
/// @param ret_len length of the stdout
///
/// @return an allocated string, or NULL for error.
char_u *get_cmd_output(char_u *cmd, char_u *infile, ShellOpts flags,
size_t *ret_len)
{
char_u *buffer = NULL;
if (check_restricted() || check_secure())
return NULL;
// get a name for the temp file
char_u *tempname = vim_tempname();
if (tempname == NULL) {
EMSG(_(e_notmp));
return NULL;
}
// Add the redirection stuff
char_u *command = make_filter_cmd(cmd, infile, tempname);
/*
* Call the shell to execute the command (errors are ignored).
* Don't check timestamps here.
*/
++no_check_timestamps;
call_shell(command, kShellOptDoOut | kShellOptExpand | flags, NULL);
--no_check_timestamps;
xfree(command);
// read the names from the file into memory
FILE *fd = mch_fopen((char *)tempname, READBIN);
if (fd == NULL) {
EMSG2(_(e_notopen), tempname);
goto done;
}
fseek(fd, 0L, SEEK_END);
size_t len = (size_t)ftell(fd); // get size of temp file
fseek(fd, 0L, SEEK_SET);
buffer = xmalloc(len + 1);
size_t i = fread((char *)buffer, 1, len, fd);
fclose(fd);
os_remove((char *)tempname);
if (i != len) {
EMSG2(_(e_notread), tempname);
xfree(buffer);
buffer = NULL;
} else if (ret_len == NULL) {
/* Change NUL into SOH, otherwise the string is truncated. */
for (i = 0; i < len; ++i)
if (buffer[i] == NUL)
buffer[i] = 1;
buffer[len] = NUL; /* make sure the buffer is terminated */
} else {
*ret_len = len;
}
done:
xfree(tempname);
return buffer;
}
/*
* Free the list of files returned by expand_wildcards() or other expansion
* functions.
*/
void FreeWild(int count, char_u **files)
{
if (count <= 0 || files == NULL)
return;
while (count--)
xfree(files[count]);
xfree(files);
}
/*
* Return TRUE when need to go to Insert mode because of 'insertmode'.
* Don't do this when still processing a command or a mapping.
* Don't do this when inside a ":normal" command.
*/
int goto_im(void)
{
return p_im && stuff_empty() && typebuf_typed();
}
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