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neovim/src/nvim/usercmd.c
Jan Edmund Lazo b3d29f396d vim-patch:8.1.1259: crash when exiting early (#35552) 
Problem:    Crash when exiting early. (Ralf Schandl)
Solution:   Only pop/push the title when it was set. (closes vim/vim#4334)

e5c83286bb

Co-authored-by: Bram Moolenaar <Bram@vim.org>
2025-08-30 13:48:24 +08:00

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// usercmd.c: User defined command support
#include <assert.h>
#include <inttypes.h>
#include <lauxlib.h>
#include <stdbool.h>
#include <stdio.h>
#include <string.h>
#include "auto/config.h"
#include "nvim/api/private/helpers.h"
#include "nvim/ascii_defs.h"
#include "nvim/buffer_defs.h"
#include "nvim/charset.h"
#include "nvim/cmdexpand_defs.h"
#include "nvim/eval.h"
#include "nvim/ex_docmd.h"
#include "nvim/garray.h"
#include "nvim/gettext_defs.h"
#include "nvim/globals.h"
#include "nvim/highlight_defs.h"
#include "nvim/keycodes.h"
#include "nvim/lua/executor.h"
#include "nvim/macros_defs.h"
#include "nvim/mapping.h"
#include "nvim/mbyte.h"
#include "nvim/memory.h"
#include "nvim/memory_defs.h"
#include "nvim/menu.h"
#include "nvim/message.h"
#include "nvim/option_vars.h"
#include "nvim/os/input.h"
#include "nvim/runtime.h"
#include "nvim/strings.h"
#include "nvim/usercmd.h"
#include "nvim/vim_defs.h"
#include "nvim/window.h"
#include "usercmd.c.generated.h"
garray_T ucmds = { 0, 0, sizeof(ucmd_T), 4, NULL };
static const char e_argument_required_for_str[]
= N_("E179: Argument required for %s");
static const char e_no_such_user_defined_command_str[]
= N_("E184: No such user-defined command: %s");
static const char e_complete_used_without_allowing_arguments[]
= N_("E1208: -complete used without allowing arguments");
static const char e_no_such_user_defined_command_in_current_buffer_str[]
= N_("E1237: No such user-defined command in current buffer: %s");
/// List of names for completion for ":command" with the EXPAND_ flag.
/// Must be alphabetical for completion.
static const char *command_complete[] = {
[EXPAND_ARGLIST] = "arglist",
[EXPAND_AUGROUP] = "augroup",
[EXPAND_BUFFERS] = "buffer",
[EXPAND_CHECKHEALTH] = "checkhealth",
[EXPAND_COLORS] = "color",
[EXPAND_COMMANDS] = "command",
[EXPAND_COMPILER] = "compiler",
[EXPAND_USER_DEFINED] = "custom",
[EXPAND_USER_LIST] = "customlist",
[EXPAND_USER_LUA] = "<Lua function>",
[EXPAND_DIFF_BUFFERS] = "diff_buffer",
[EXPAND_DIRECTORIES] = "dir",
[EXPAND_ENV_VARS] = "environment",
[EXPAND_EVENTS] = "event",
[EXPAND_EXPRESSION] = "expression",
[EXPAND_FILES] = "file",
[EXPAND_FILES_IN_PATH] = "file_in_path",
[EXPAND_FILETYPE] = "filetype",
[EXPAND_FILETYPECMD] = "filetypecmd",
[EXPAND_FUNCTIONS] = "function",
[EXPAND_HELP] = "help",
[EXPAND_HIGHLIGHT] = "highlight",
[EXPAND_HISTORY] = "history",
[EXPAND_KEYMAP] = "keymap",
#ifdef HAVE_WORKING_LIBINTL
[EXPAND_LOCALES] = "locale",
#endif
[EXPAND_LUA] = "lua",
[EXPAND_MAPCLEAR] = "mapclear",
[EXPAND_MAPPINGS] = "mapping",
[EXPAND_MENUS] = "menu",
[EXPAND_MESSAGES] = "messages",
[EXPAND_OWNSYNTAX] = "syntax",
[EXPAND_SYNTIME] = "syntime",
[EXPAND_SETTINGS] = "option",
[EXPAND_PACKADD] = "packadd",
[EXPAND_RETAB] = "retab",
[EXPAND_RUNTIME] = "runtime",
[EXPAND_SHELLCMD] = "shellcmd",
[EXPAND_SHELLCMDLINE] = "shellcmdline",
[EXPAND_SIGN] = "sign",
[EXPAND_TAGS] = "tag",
[EXPAND_TAGS_LISTFILES] = "tag_listfiles",
[EXPAND_USER] = "user",
[EXPAND_USER_VARS] = "var",
[EXPAND_BREAKPOINT] = "breakpoint",
[EXPAND_SCRIPTNAMES] = "scriptnames",
[EXPAND_DIRS_IN_CDPATH] = "dir_in_path",
};
/// List of names of address types. Must be alphabetical for completion.
static struct {
cmd_addr_T expand;
char *name;
char *shortname;
} addr_type_complete[] = {
{ ADDR_ARGUMENTS, "arguments", "arg" },
{ ADDR_LINES, "lines", "line" },
{ ADDR_LOADED_BUFFERS, "loaded_buffers", "load" },
{ ADDR_TABS, "tabs", "tab" },
{ ADDR_BUFFERS, "buffers", "buf" },
{ ADDR_WINDOWS, "windows", "win" },
{ ADDR_QUICKFIX, "quickfix", "qf" },
{ ADDR_OTHER, "other", "?" },
{ ADDR_NONE, NULL, NULL }
};
/// Search for a user command that matches "eap->cmd".
/// Return cmdidx in "eap->cmdidx", flags in "eap->argt", idx in "eap->useridx".
/// Return a pointer to just after the command.
/// Return NULL if there is no matching command.
///
/// @param *p end of the command (possibly including count)
/// @param full set to true for a full match
/// @param xp used for completion, NULL otherwise
/// @param complp completion flags or NULL
char *find_ucmd(exarg_T *eap, char *p, int *full, expand_T *xp, int *complp)
{
int len = (int)(p - eap->cmd);
int matchlen = 0;
bool found = false;
bool possible = false;
bool amb_local = false; // Found ambiguous buffer-local command,
// only full match global is accepted.
// Look for buffer-local user commands first, then global ones.
garray_T *gap = &prevwin_curwin()->w_buffer->b_ucmds;
while (true) {
int j;
for (j = 0; j < gap->ga_len; j++) {
ucmd_T *uc = USER_CMD_GA(gap, j);
char *cp = eap->cmd;
char *np = uc->uc_name;
int k = 0;
while (k < len && *np != NUL && *cp++ == *np++) {
k++;
}
if (k == len || (*np == NUL && ascii_isdigit(eap->cmd[k]))) {
// If finding a second match, the command is ambiguous. But
// not if a buffer-local command wasn't a full match and a
// global command is a full match.
if (k == len && found && *np != NUL) {
if (gap == &ucmds) {
return NULL;
}
amb_local = true;
}
if (!found || (k == len && *np == NUL)) {
// If we matched up to a digit, then there could
// be another command including the digit that we
// should use instead.
if (k == len) {
found = true;
} else {
possible = true;
}
if (gap == &ucmds) {
eap->cmdidx = CMD_USER;
} else {
eap->cmdidx = CMD_USER_BUF;
}
eap->argt = uc->uc_argt;
eap->useridx = j;
eap->addr_type = uc->uc_addr_type;
if (complp != NULL) {
*complp = uc->uc_compl;
}
if (xp != NULL) {
xp->xp_luaref = uc->uc_compl_luaref;
xp->xp_arg = uc->uc_compl_arg;
xp->xp_script_ctx = uc->uc_script_ctx;
xp->xp_script_ctx.sc_lnum += SOURCING_LNUM;
}
// Do not search for further abbreviations
// if this is an exact match.
matchlen = k;
if (k == len && *np == NUL) {
if (full != NULL) {
*full = true;
}
amb_local = false;
break;
}
}
}
}
// Stop if we found a full match or searched all.
if (j < gap->ga_len || gap == &ucmds) {
break;
}
gap = &ucmds;
}
// Only found ambiguous matches.
if (amb_local) {
if (xp != NULL) {
xp->xp_context = EXPAND_UNSUCCESSFUL;
}
return NULL;
}
// The match we found may be followed immediately by a number. Move "p"
// back to point to it.
if (found || possible) {
return p + (matchlen - len);
}
return p;
}
/// Set completion context for :command
const char *set_context_in_user_cmd(expand_T *xp, const char *arg_in)
{
const char *arg = arg_in;
const char *p;
// Check for attributes
while (*arg == '-') {
arg++; // Skip "-".
p = skiptowhite(arg);
if (*p == NUL) {
// Cursor is still in the attribute.
p = strchr(arg, '=');
if (p == NULL) {
// No "=", so complete attribute names.
xp->xp_context = EXPAND_USER_CMD_FLAGS;
xp->xp_pattern = (char *)arg;
return NULL;
}
// For the -complete, -nargs and -addr attributes, we complete
// their arguments as well.
if (STRNICMP(arg, "complete", p - arg) == 0) {
xp->xp_context = EXPAND_USER_COMPLETE;
xp->xp_pattern = (char *)p + 1;
return NULL;
} else if (STRNICMP(arg, "nargs", p - arg) == 0) {
xp->xp_context = EXPAND_USER_NARGS;
xp->xp_pattern = (char *)p + 1;
return NULL;
} else if (STRNICMP(arg, "addr", p - arg) == 0) {
xp->xp_context = EXPAND_USER_ADDR_TYPE;
xp->xp_pattern = (char *)p + 1;
return NULL;
}
return NULL;
}
arg = skipwhite(p);
}
// After the attributes comes the new command name.
p = skiptowhite(arg);
if (*p == NUL) {
xp->xp_context = EXPAND_USER_COMMANDS;
xp->xp_pattern = (char *)arg;
return NULL;
}
// And finally comes a normal command.
return skipwhite(p);
}
/// Set the completion context for the argument of a user defined command.
const char *set_context_in_user_cmdarg(const char *cmd FUNC_ATTR_UNUSED, const char *arg,
uint32_t argt, int context, expand_T *xp, bool forceit)
{
if (context == EXPAND_NOTHING) {
return NULL;
}
if (argt & EX_XFILE) {
// EX_XFILE: file names are handled before this call.
return NULL;
}
if (context == EXPAND_MENUS) {
return set_context_in_menu_cmd(xp, cmd, (char *)arg, forceit);
}
if (context == EXPAND_COMMANDS) {
return arg;
}
if (context == EXPAND_MAPPINGS) {
return set_context_in_map_cmd(xp, "map", (char *)arg, forceit, false, false,
CMD_map);
}
// Find start of last argument.
const char *p = arg;
while (*p) {
if (*p == ' ') {
// argument starts after a space
arg = p + 1;
} else if (*p == '\\' && *(p + 1) != NUL) {
p++; // skip over escaped character
}
MB_PTR_ADV(p);
}
xp->xp_pattern = (char *)arg;
xp->xp_context = context;
return NULL;
}
char *expand_user_command_name(int idx)
{
return get_user_commands(NULL, idx - CMD_SIZE);
}
/// Function given to ExpandGeneric() to obtain the list of user command names.
char *get_user_commands(expand_T *xp FUNC_ATTR_UNUSED, int idx)
FUNC_ATTR_PURE FUNC_ATTR_WARN_UNUSED_RESULT
{
// In cmdwin, the alternative buffer should be used.
const buf_T *const buf = prevwin_curwin()->w_buffer;
if (idx < buf->b_ucmds.ga_len) {
return USER_CMD_GA(&buf->b_ucmds, idx)->uc_name;
}
idx -= buf->b_ucmds.ga_len;
if (idx < ucmds.ga_len) {
char *name = USER_CMD(idx)->uc_name;
for (int i = 0; i < buf->b_ucmds.ga_len; i++) {
if (strcmp(name, USER_CMD_GA(&buf->b_ucmds, i)->uc_name) == 0) {
// global command is overruled by buffer-local one
return "";
}
}
return name;
}
return NULL;
}
/// Get the name of user command "idx". "cmdidx" can be CMD_USER or
/// CMD_USER_BUF.
///
/// @return NULL if the command is not found.
char *get_user_command_name(int idx, int cmdidx)
{
if (cmdidx == CMD_USER && idx < ucmds.ga_len) {
return USER_CMD(idx)->uc_name;
}
if (cmdidx == CMD_USER_BUF) {
// In cmdwin, the alternative buffer should be used.
const buf_T *const buf = prevwin_curwin()->w_buffer;
if (idx < buf->b_ucmds.ga_len) {
return USER_CMD_GA(&buf->b_ucmds, idx)->uc_name;
}
}
return NULL;
}
/// Function given to ExpandGeneric() to obtain the list of user address type names.
char *get_user_cmd_addr_type(expand_T *xp, int idx)
{
return addr_type_complete[idx].name;
}
/// Function given to ExpandGeneric() to obtain the list of user command
/// attributes.
char *get_user_cmd_flags(expand_T *xp, int idx)
{
static char *user_cmd_flags[] = { "addr", "bang", "bar",
"buffer", "complete", "count",
"nargs", "range", "register",
"keepscript" };
if (idx >= (int)ARRAY_SIZE(user_cmd_flags)) {
return NULL;
}
return user_cmd_flags[idx];
}
/// Function given to ExpandGeneric() to obtain the list of values for -nargs.
char *get_user_cmd_nargs(expand_T *xp, int idx)
{
static char *user_cmd_nargs[] = { "0", "1", "*", "?", "+" };
if (idx >= (int)ARRAY_SIZE(user_cmd_nargs)) {
return NULL;
}
return user_cmd_nargs[idx];
}
static char *get_command_complete(int arg)
{
if (arg < 0 || arg >= (int)(ARRAY_SIZE(command_complete))) {
return NULL;
}
return (char *)command_complete[arg];
}
/// Function given to ExpandGeneric() to obtain the list of values for -complete.
char *get_user_cmd_complete(expand_T *xp, int idx)
{
if (idx >= (int)ARRAY_SIZE(command_complete)) {
return NULL;
}
char *cmd_compl = get_command_complete(idx);
if (cmd_compl == NULL || idx == EXPAND_USER_LUA) {
return "";
}
return cmd_compl;
}
/// Get the name of completion type "expand" as an allocated string.
/// "compl_arg" is the function name for "custom" and "customlist" types.
/// Returns NULL if no completion is available.
char *cmdcomplete_type_to_str(int expand, const char *compl_arg)
{
char *cmd_compl = get_command_complete(expand);
if (cmd_compl == NULL || expand == EXPAND_USER_LUA) {
return NULL;
}
if (expand == EXPAND_USER_LIST || expand == EXPAND_USER_DEFINED) {
size_t buflen = strlen(cmd_compl) + strlen(compl_arg) + 2;
char *buffer = xmalloc(buflen);
snprintf(buffer, buflen, "%s,%s", cmd_compl, compl_arg);
return buffer;
}
return xstrdup(cmd_compl);
}
int cmdcomplete_str_to_type(const char *complete_str)
{
if (strncmp(complete_str, "custom,", 7) == 0) {
return EXPAND_USER_DEFINED;
}
if (strncmp(complete_str, "customlist,", 11) == 0) {
return EXPAND_USER_LIST;
}
for (int i = 0; i < (int)(ARRAY_SIZE(command_complete)); i++) {
char *cmd_compl = get_command_complete(i);
if (cmd_compl == NULL) {
continue;
}
if (strcmp(complete_str, command_complete[i]) == 0) {
return i;
}
}
return EXPAND_NOTHING;
}
static void uc_list(char *name, size_t name_len)
{
bool found = false;
msg_ext_set_kind("list_cmd");
// In cmdwin, the alternative buffer should be used.
const garray_T *gap = &prevwin_curwin()->w_buffer->b_ucmds;
while (true) {
int i;
for (i = 0; i < gap->ga_len; i++) {
ucmd_T *cmd = USER_CMD_GA(gap, i);
uint32_t a = cmd->uc_argt;
// Skip commands which don't match the requested prefix and
// commands filtered out.
if (strncmp(name, cmd->uc_name, name_len) != 0
|| message_filtered(cmd->uc_name)) {
continue;
}
// Put out the title first time
if (!found) {
msg_puts_title(_("\n Name Args Address Complete Definition"));
}
found = true;
msg_putchar('\n');
if (got_int) {
break;
}
// Special cases
size_t len = 4;
if (a & EX_BANG) {
msg_putchar('!');
len--;
}
if (a & EX_REGSTR) {
msg_putchar('"');
len--;
}
if (gap != &ucmds) {
msg_putchar('b');
len--;
}
if (a & EX_TRLBAR) {
msg_putchar('|');
len--;
}
if (len != 0) {
msg_puts(&" "[4 - len]);
}
msg_outtrans(cmd->uc_name, HLF_D, false);
len = strlen(cmd->uc_name) + 4;
if (len < 21) {
// Field padding spaces 12345678901234567
static char spaces[18] = " ";
msg_puts(&spaces[len - 4]);
len = 21;
}
msg_putchar(' ');
len++;
// "over" is how much longer the name is than the column width for
// the name, we'll try to align what comes after.
const int64_t over = (int64_t)len - 22;
len = 0;
// Arguments
switch (a & (EX_EXTRA | EX_NOSPC | EX_NEEDARG)) {
case 0:
IObuff[len++] = '0';
break;
case (EX_EXTRA):
IObuff[len++] = '*';
break;
case (EX_EXTRA | EX_NOSPC):
IObuff[len++] = '?';
break;
case (EX_EXTRA | EX_NEEDARG):
IObuff[len++] = '+';
break;
case (EX_EXTRA | EX_NOSPC | EX_NEEDARG):
IObuff[len++] = '1';
break;
}
do {
IObuff[len++] = ' ';
} while ((int64_t)len < 5 - over);
// Address / Range
if (a & (EX_RANGE | EX_COUNT)) {
if (a & EX_COUNT) {
// -count=N
int rc = snprintf(IObuff + len, IOSIZE - len, "%" PRId64 "c", cmd->uc_def);
assert(rc > 0);
len += (size_t)rc;
} else if (a & EX_DFLALL) {
IObuff[len++] = '%';
} else if (cmd->uc_def >= 0) {
// -range=N
int rc = snprintf(IObuff + len, IOSIZE - len, "%" PRId64 "", cmd->uc_def);
assert(rc > 0);
len += (size_t)rc;
} else {
IObuff[len++] = '.';
}
}
do {
IObuff[len++] = ' ';
} while ((int64_t)len < 8 - over);
// Address Type
for (int j = 0; addr_type_complete[j].expand != ADDR_NONE; j++) {
if (addr_type_complete[j].expand != ADDR_LINES
&& addr_type_complete[j].expand == cmd->uc_addr_type) {
int rc = snprintf(IObuff + len, IOSIZE - len, "%s", addr_type_complete[j].shortname);
assert(rc > 0);
len += (size_t)rc;
break;
}
}
do {
IObuff[len++] = ' ';
} while ((int64_t)len < 13 - over);
// Completion
char *cmd_compl = get_command_complete(cmd->uc_compl);
if (cmd_compl != NULL) {
int rc = snprintf(IObuff + len, IOSIZE - len, "%s", get_command_complete(cmd->uc_compl));
assert(rc > 0);
len += (size_t)rc;
}
do {
IObuff[len++] = ' ';
} while ((int64_t)len < 25 - over);
IObuff[len] = NUL;
msg_outtrans(IObuff, 0, false);
if (cmd->uc_luaref != LUA_NOREF) {
char *fn = nlua_funcref_str(cmd->uc_luaref, NULL);
msg_puts_hl(fn, HLF_8, false);
xfree(fn);
// put the description on a new line
if (*cmd->uc_rep != NUL) {
msg_puts("\n ");
}
}
msg_outtrans_special(cmd->uc_rep, false,
name_len == 0 ? Columns - 47 : 0);
if (p_verbose > 0) {
last_set_msg(cmd->uc_script_ctx);
}
line_breakcheck();
if (got_int) {
break;
}
}
if (gap == &ucmds || i < gap->ga_len) {
break;
}
gap = &ucmds;
}
if (!found) {
msg(_("No user-defined commands found"), 0);
}
}
/// Parse address type argument
int parse_addr_type_arg(char *value, int vallen, cmd_addr_T *addr_type_arg)
FUNC_ATTR_NONNULL_ALL
{
int i;
for (i = 0; addr_type_complete[i].expand != ADDR_NONE; i++) {
int a = (int)strlen(addr_type_complete[i].name) == vallen;
int b = strncmp(value, addr_type_complete[i].name, (size_t)vallen) == 0;
if (a && b) {
*addr_type_arg = addr_type_complete[i].expand;
break;
}
}
if (addr_type_complete[i].expand == ADDR_NONE) {
char *err = value;
for (i = 0; err[i] != NUL && !ascii_iswhite(err[i]); i++) {}
err[i] = NUL;
semsg(_("E180: Invalid address type value: %s"), err);
return FAIL;
}
return OK;
}
/// Parse a completion argument "value[vallen]".
/// The detected completion goes in "*complp", argument type in "*argt".
/// When there is an argument, for function and user defined completion, it's
/// copied to allocated memory and stored in "*compl_arg".
///
/// @return FAIL if something is wrong.
int parse_compl_arg(const char *value, int vallen, int *complp, uint32_t *argt, char **compl_arg)
FUNC_ATTR_NONNULL_ALL
{
const char *arg = NULL;
size_t arglen = 0;
int valend = vallen;
// Look for any argument part - which is the part after any ','
for (int i = 0; i < vallen; i++) {
if (value[i] == ',') {
arg = (char *)&value[i + 1];
arglen = (size_t)(vallen - i - 1);
valend = i;
break;
}
}
int i;
for (i = 0; i < (int)ARRAY_SIZE(command_complete); i++) {
if (get_command_complete(i) == NULL) {
continue;
}
if ((int)strlen(command_complete[i]) == valend
&& strncmp(value, command_complete[i], (size_t)valend) == 0) {
*complp = i;
if (i == EXPAND_BUFFERS) {
*argt |= EX_BUFNAME;
} else if (i == EXPAND_DIRECTORIES || i == EXPAND_FILES
|| i == EXPAND_SHELLCMDLINE) {
*argt |= EX_XFILE;
}
break;
}
}
if (i == (int)ARRAY_SIZE(command_complete)) {
semsg(_("E180: Invalid complete value: %s"), value);
return FAIL;
}
if (*complp != EXPAND_USER_DEFINED && *complp != EXPAND_USER_LIST
&& arg != NULL) {
emsg(_("E468: Completion argument only allowed for custom completion"));
return FAIL;
}
if ((*complp == EXPAND_USER_DEFINED || *complp == EXPAND_USER_LIST)
&& arg == NULL) {
emsg(_("E467: Custom completion requires a function argument"));
return FAIL;
}
if (arg != NULL) {
*compl_arg = xstrnsave(arg, arglen);
}
return OK;
}
static int uc_scan_attr(char *attr, size_t len, uint32_t *argt, int *def, int *flags, int *complp,
char **compl_arg, cmd_addr_T *addr_type_arg)
FUNC_ATTR_NONNULL_ALL
{
if (len == 0) {
emsg(_("E175: No attribute specified"));
return FAIL;
}
// First, try the simple attributes (no arguments)
if (STRNICMP(attr, "bang", len) == 0) {
*argt |= EX_BANG;
} else if (STRNICMP(attr, "buffer", len) == 0) {
*flags |= UC_BUFFER;
} else if (STRNICMP(attr, "register", len) == 0) {
*argt |= EX_REGSTR;
} else if (STRNICMP(attr, "keepscript", len) == 0) {
*argt |= EX_KEEPSCRIPT;
} else if (STRNICMP(attr, "bar", len) == 0) {
*argt |= EX_TRLBAR;
} else {
char *val = NULL;
size_t vallen = 0;
size_t attrlen = len;
// Look for the attribute name - which is the part before any '='
for (int i = 0; i < (int)len; i++) {
if (attr[i] == '=') {
val = &attr[i + 1];
vallen = len - (size_t)i - 1;
attrlen = (size_t)i;
break;
}
}
if (STRNICMP(attr, "nargs", attrlen) == 0) {
if (vallen == 1) {
if (*val == '0') {
// Do nothing - this is the default;
} else if (*val == '1') {
*argt |= (EX_EXTRA | EX_NOSPC | EX_NEEDARG);
} else if (*val == '*') {
*argt |= EX_EXTRA;
} else if (*val == '?') {
*argt |= (EX_EXTRA | EX_NOSPC);
} else if (*val == '+') {
*argt |= (EX_EXTRA | EX_NEEDARG);
} else {
goto wrong_nargs;
}
} else {
wrong_nargs:
emsg(_("E176: Invalid number of arguments"));
return FAIL;
}
} else if (STRNICMP(attr, "range", attrlen) == 0) {
*argt |= EX_RANGE;
if (vallen == 1 && *val == '%') {
*argt |= EX_DFLALL;
} else if (val != NULL) {
char *p = val;
if (*def >= 0) {
two_count:
emsg(_("E177: Count cannot be specified twice"));
return FAIL;
}
*def = getdigits_int(&p, true, 0);
*argt |= EX_ZEROR;
if (p != val + vallen || vallen == 0) {
invalid_count:
emsg(_("E178: Invalid default value for count"));
return FAIL;
}
}
// default for -range is using buffer lines
if (*addr_type_arg == ADDR_NONE) {
*addr_type_arg = ADDR_LINES;
}
} else if (STRNICMP(attr, "count", attrlen) == 0) {
*argt |= (EX_COUNT | EX_ZEROR | EX_RANGE);
// default for -count is using any number
if (*addr_type_arg == ADDR_NONE) {
*addr_type_arg = ADDR_OTHER;
}
if (val != NULL) {
char *p = val;
if (*def >= 0) {
goto two_count;
}
*def = getdigits_int(&p, true, 0);
if (p != val + vallen) {
goto invalid_count;
}
}
*def = MAX(*def, 0);
} else if (STRNICMP(attr, "complete", attrlen) == 0) {
if (val == NULL) {
semsg(_(e_argument_required_for_str), "-complete");
return FAIL;
}
if (parse_compl_arg(val, (int)vallen, complp, argt, compl_arg)
== FAIL) {
return FAIL;
}
} else if (STRNICMP(attr, "addr", attrlen) == 0) {
*argt |= EX_RANGE;
if (val == NULL) {
semsg(_(e_argument_required_for_str), "-addr");
return FAIL;
}
if (parse_addr_type_arg(val, (int)vallen, addr_type_arg) == FAIL) {
return FAIL;
}
if (*addr_type_arg != ADDR_LINES) {
*argt |= EX_ZEROR;
}
} else {
char ch = attr[len];
attr[len] = NUL;
semsg(_("E181: Invalid attribute: %s"), attr);
attr[len] = ch;
return FAIL;
}
}
return OK;
}
/// Check for a valid user command name
///
/// If the given {name} is valid, then a pointer to the end of the valid name is returned.
/// Otherwise, returns NULL.
char *uc_validate_name(char *name)
{
if (ASCII_ISALPHA(*name)) {
while (ASCII_ISALNUM(*name)) {
name++;
}
}
if (!ends_excmd(*name) && !ascii_iswhite(*name)) {
return NULL;
}
return name;
}
/// Create a new user command {name}, if one doesn't already exist.
///
/// This function takes ownership of compl_arg, compl_luaref, and luaref.
///
/// @return OK if the command is created, FAIL otherwise.
int uc_add_command(char *name, size_t name_len, const char *rep, uint32_t argt, int64_t def,
int flags, int context, char *compl_arg, LuaRef compl_luaref,
LuaRef preview_luaref, cmd_addr_T addr_type, LuaRef luaref, bool force)
FUNC_ATTR_NONNULL_ARG(1, 3)
{
ucmd_T *cmd = NULL;
int cmp = 1;
char *rep_buf = NULL;
garray_T *gap;
replace_termcodes(rep, strlen(rep), &rep_buf, 0, 0, NULL, p_cpo);
if (rep_buf == NULL) {
// Can't replace termcodes - try using the string as is
rep_buf = xstrdup(rep);
}
// get address of growarray: global or in curbuf
if (flags & UC_BUFFER) {
gap = &curbuf->b_ucmds;
if (gap->ga_itemsize == 0) {
ga_init(gap, (int)sizeof(ucmd_T), 4);
}
} else {
gap = &ucmds;
}
int i;
// Search for the command in the already defined commands.
for (i = 0; i < gap->ga_len; i++) {
cmd = USER_CMD_GA(gap, i);
size_t len = strlen(cmd->uc_name);
cmp = strncmp(name, cmd->uc_name, name_len);
if (cmp == 0) {
if (name_len < len) {
cmp = -1;
} else if (name_len > len) {
cmp = 1;
}
}
if (cmp == 0) {
// Command can be replaced with "command!" and when sourcing the
// same script again, but only once.
if (!force
&& (cmd->uc_script_ctx.sc_sid != current_sctx.sc_sid
|| cmd->uc_script_ctx.sc_seq == current_sctx.sc_seq)) {
semsg(_("E174: Command already exists: add ! to replace it: %s"),
name);
goto fail;
}
XFREE_CLEAR(cmd->uc_rep);
XFREE_CLEAR(cmd->uc_compl_arg);
NLUA_CLEAR_REF(cmd->uc_luaref);
NLUA_CLEAR_REF(cmd->uc_compl_luaref);
NLUA_CLEAR_REF(cmd->uc_preview_luaref);
break;
}
// Stop as soon as we pass the name to add
if (cmp < 0) {
break;
}
}
// Extend the array unless we're replacing an existing command
if (cmp != 0) {
ga_grow(gap, 1);
char *const p = xstrnsave(name, name_len);
cmd = USER_CMD_GA(gap, i);
memmove(cmd + 1, cmd, (size_t)(gap->ga_len - i) * sizeof(ucmd_T));
gap->ga_len++;
cmd->uc_name = p;
}
cmd->uc_rep = rep_buf;
cmd->uc_argt = argt;
cmd->uc_def = def;
cmd->uc_compl = context;
cmd->uc_script_ctx = current_sctx;
cmd->uc_script_ctx.sc_lnum += SOURCING_LNUM;
nlua_set_sctx(&cmd->uc_script_ctx);
cmd->uc_compl_arg = compl_arg;
cmd->uc_compl_luaref = compl_luaref;
cmd->uc_preview_luaref = preview_luaref;
cmd->uc_addr_type = addr_type;
cmd->uc_luaref = luaref;
return OK;
fail:
xfree(rep_buf);
xfree(compl_arg);
NLUA_CLEAR_REF(luaref);
NLUA_CLEAR_REF(compl_luaref);
NLUA_CLEAR_REF(preview_luaref);
return FAIL;
}
/// ":command ..."
void ex_command(exarg_T *eap)
{
char *end;
uint32_t argt = 0;
int def = -1;
int flags = 0;
int context = EXPAND_NOTHING;
char *compl_arg = NULL;
cmd_addr_T addr_type_arg = ADDR_NONE;
int has_attr = (eap->arg[0] == '-');
char *p = eap->arg;
// Check for attributes
while (*p == '-') {
p++;
end = skiptowhite(p);
if (uc_scan_attr(p, (size_t)(end - p), &argt, &def, &flags, &context, &compl_arg,
&addr_type_arg) == FAIL) {
goto theend;
}
p = skipwhite(end);
}
// Get the name (if any) and skip to the following argument.
char *name = p;
end = uc_validate_name(name);
if (!end) {
emsg(_("E182: Invalid command name"));
goto theend;
}
size_t name_len = (size_t)(end - name);
// If there is nothing after the name, and no attributes were specified,
// we are listing commands
p = skipwhite(end);
if (!has_attr && ends_excmd(*p)) {
uc_list(name, name_len);
} else if (!ASCII_ISUPPER(*name)) {
emsg(_("E183: User defined commands must start with an uppercase letter"));
} else if (name_len <= 4 && strncmp(name, "Next", name_len) == 0) {
emsg(_("E841: Reserved name, cannot be used for user defined command"));
} else if (context > 0 && (argt & EX_EXTRA) == 0) {
emsg(_(e_complete_used_without_allowing_arguments));
} else {
uc_add_command(name, name_len, p, argt, def, flags, context, compl_arg, LUA_NOREF, LUA_NOREF,
addr_type_arg, LUA_NOREF, eap->forceit);
return; // success
}
theend:
xfree(compl_arg);
}
/// ":comclear"
/// Clear all user commands, global and for current buffer.
void ex_comclear(exarg_T *eap)
{
uc_clear(&ucmds);
if (curbuf != NULL) {
uc_clear(&curbuf->b_ucmds);
}
}
void free_ucmd(ucmd_T *cmd)
{
xfree(cmd->uc_name);
xfree(cmd->uc_rep);
xfree(cmd->uc_compl_arg);
NLUA_CLEAR_REF(cmd->uc_compl_luaref);
NLUA_CLEAR_REF(cmd->uc_luaref);
NLUA_CLEAR_REF(cmd->uc_preview_luaref);
}
/// Clear all user commands for "gap".
void uc_clear(garray_T *gap)
{
GA_DEEP_CLEAR(gap, ucmd_T, free_ucmd);
}
void ex_delcommand(exarg_T *eap)
{
int i = 0;
ucmd_T *cmd = NULL;
int res = -1;
const char *arg = eap->arg;
bool buffer_only = false;
if (strncmp(arg, "-buffer", 7) == 0 && ascii_iswhite(arg[7])) {
buffer_only = true;
arg = skipwhite(arg + 7);
}
garray_T *gap = &curbuf->b_ucmds;
while (true) {
for (i = 0; i < gap->ga_len; i++) {
cmd = USER_CMD_GA(gap, i);
res = strcmp(arg, cmd->uc_name);
if (res <= 0) {
break;
}
}
if (gap == &ucmds || res == 0 || buffer_only) {
break;
}
gap = &ucmds;
}
if (res != 0) {
semsg(_(buffer_only
? e_no_such_user_defined_command_in_current_buffer_str
: e_no_such_user_defined_command_str),
arg);
return;
}
free_ucmd(cmd);
gap->ga_len--;
if (i < gap->ga_len) {
memmove(cmd, cmd + 1, (size_t)(gap->ga_len - i) * sizeof(ucmd_T));
}
}
/// Split a string by unescaped whitespace (space & tab), used for f-args on Lua commands callback.
/// Similar to uc_split_args(), but does not allocate, add quotes, add commas and is an iterator.
///
/// @param[in] arg String to split
/// @param[in] arglen Length of {arg}
/// @param[inout] end Index of last character of previous iteration
/// @param[out] buf Buffer to copy string into
/// @param[out] len Length of string in {buf}
///
/// @return true if iteration is complete, else false
bool uc_split_args_iter(const char *arg, size_t arglen, size_t *end, char *buf, size_t *len)
{
if (!arglen) {
return true;
}
size_t pos = *end;
while (pos < arglen && ascii_iswhite(arg[pos])) {
pos++;
}
size_t l = 0;
for (; pos < arglen - 1; pos++) {
if (arg[pos] == '\\' && (arg[pos + 1] == '\\' || ascii_iswhite(arg[pos + 1]))) {
buf[l++] = arg[++pos];
} else {
buf[l++] = arg[pos];
}
if (ascii_iswhite(arg[pos + 1])) {
*end = pos + 1;
*len = l;
return false;
}
}
if (pos < arglen && !ascii_iswhite(arg[pos])) {
buf[l++] = arg[pos];
}
*len = l;
return true;
}
size_t uc_nargs_upper_bound(const char *arg, size_t arglen)
{
bool was_white = true; // space before first arg
size_t nargs = 0;
for (size_t i = 0; i < arglen; i++) {
bool is_white = ascii_iswhite(arg[i]);
if (was_white && !is_white) {
nargs++;
}
was_white = is_white;
}
return nargs;
}
/// split and quote args for <f-args>
static char *uc_split_args(const char *arg, char **args, const size_t *arglens, size_t argc,
size_t *lenp)
{
// Precalculate length
int len = 2; // Initial and final quotes
if (args == NULL) {
const char *p = arg;
while (*p) {
if (p[0] == '\\' && p[1] == '\\') {
len += 2;
p += 2;
} else if (p[0] == '\\' && ascii_iswhite(p[1])) {
len += 1;
p += 2;
} else if (*p == '\\' || *p == '"') {
len += 2;
p += 1;
} else if (ascii_iswhite(*p)) {
p = skipwhite(p);
if (*p == NUL) {
break;
}
len += 4; // ", "
} else {
const int charlen = utfc_ptr2len(p);
len += charlen;
p += charlen;
}
}
} else {
for (size_t i = 0; i < argc; i++) {
const char *p = args[i];
const char *arg_end = args[i] + arglens[i];
while (p < arg_end) {
if (*p == '\\' || *p == '"') {
len += 2;
p += 1;
} else {
const int charlen = utfc_ptr2len(p);
len += charlen;
p += charlen;
}
}
if (i != argc - 1) {
len += 4; // ", "
}
}
}
char *buf = xmalloc((size_t)len + 1);
char *q = buf;
*q++ = '"';
if (args == NULL) {
const char *p = arg;
while (*p) {
if (p[0] == '\\' && p[1] == '\\') {
*q++ = '\\';
*q++ = '\\';
p += 2;
} else if (p[0] == '\\' && ascii_iswhite(p[1])) {
*q++ = p[1];
p += 2;
} else if (*p == '\\' || *p == '"') {
*q++ = '\\';
*q++ = *p++;
} else if (ascii_iswhite(*p)) {
p = skipwhite(p);
if (*p == NUL) {
break;
}
*q++ = '"';
*q++ = ',';
*q++ = ' ';
*q++ = '"';
} else {
mb_copy_char(&p, &q);
}
}
} else {
for (size_t i = 0; i < argc; i++) {
const char *p = args[i];
const char *arg_end = args[i] + arglens[i];
while (p < arg_end) {
if (*p == '\\' || *p == '"') {
*q++ = '\\';
*q++ = *p++;
} else {
mb_copy_char(&p, &q);
}
}
if (i != argc - 1) {
*q++ = '"';
*q++ = ',';
*q++ = ' ';
*q++ = '"';
}
}
}
*q++ = '"';
*q = 0;
*lenp = (size_t)len;
return buf;
}
static size_t add_cmd_modifier(char *buf, char *mod_str, bool *multi_mods)
{
size_t result = strlen(mod_str);
if (*multi_mods) {
result++;
}
if (buf != NULL) {
if (*multi_mods) {
strcat(buf, " ");
}
strcat(buf, mod_str);
}
*multi_mods = true;
return result;
}
/// Add modifiers from "cmod->cmod_split" to "buf". Set "multi_mods" when one
/// was added.
///
/// @return the number of bytes added
size_t add_win_cmd_modifiers(char *buf, const cmdmod_T *cmod, bool *multi_mods)
{
size_t result = 0;
// :aboveleft and :leftabove
if (cmod->cmod_split & WSP_ABOVE) {
result += add_cmd_modifier(buf, "aboveleft", multi_mods);
}
// :belowright and :rightbelow
if (cmod->cmod_split & WSP_BELOW) {
result += add_cmd_modifier(buf, "belowright", multi_mods);
}
// :botright
if (cmod->cmod_split & WSP_BOT) {
result += add_cmd_modifier(buf, "botright", multi_mods);
}
// :tab
if (cmod->cmod_tab > 0) {
int tabnr = cmod->cmod_tab - 1;
if (tabnr == tabpage_index(curtab)) {
// For compatibility, don't add a tabpage number if it is the same
// as the default number for :tab.
result += add_cmd_modifier(buf, "tab", multi_mods);
} else {
char tab_buf[NUMBUFLEN + 3];
snprintf(tab_buf, sizeof(tab_buf), "%dtab", tabnr);
result += add_cmd_modifier(buf, tab_buf, multi_mods);
}
}
// :topleft
if (cmod->cmod_split & WSP_TOP) {
result += add_cmd_modifier(buf, "topleft", multi_mods);
}
// :vertical
if (cmod->cmod_split & WSP_VERT) {
result += add_cmd_modifier(buf, "vertical", multi_mods);
}
// :horizontal
if (cmod->cmod_split & WSP_HOR) {
result += add_cmd_modifier(buf, "horizontal", multi_mods);
}
return result;
}
/// Generate text for the "cmod" command modifiers.
/// If "buf" is NULL just return the length.
size_t uc_mods(char *buf, const cmdmod_T *cmod, bool quote)
{
size_t result = 0;
bool multi_mods = false;
typedef struct {
int flag;
char *name;
} mod_entry_T;
static mod_entry_T mod_entries[] = {
{ CMOD_BROWSE, "browse" },
{ CMOD_CONFIRM, "confirm" },
{ CMOD_HIDE, "hide" },
{ CMOD_KEEPALT, "keepalt" },
{ CMOD_KEEPJUMPS, "keepjumps" },
{ CMOD_KEEPMARKS, "keepmarks" },
{ CMOD_KEEPPATTERNS, "keeppatterns" },
{ CMOD_LOCKMARKS, "lockmarks" },
{ CMOD_NOSWAPFILE, "noswapfile" },
{ CMOD_UNSILENT, "unsilent" },
{ CMOD_NOAUTOCMD, "noautocmd" },
{ CMOD_SANDBOX, "sandbox" },
};
result = quote ? 2 : 0;
if (buf != NULL) {
if (quote) {
*buf++ = '"';
}
*buf = NUL;
}
// the modifiers that are simple flags
for (size_t i = 0; i < ARRAY_SIZE(mod_entries); i++) {
if (cmod->cmod_flags & mod_entries[i].flag) {
result += add_cmd_modifier(buf, mod_entries[i].name, &multi_mods);
}
}
// :silent
if (cmod->cmod_flags & CMOD_SILENT) {
result += add_cmd_modifier(buf,
(cmod->cmod_flags & CMOD_ERRSILENT) ? "silent!" : "silent",
&multi_mods);
}
// :verbose
if (cmod->cmod_verbose > 0) {
int verbose_value = cmod->cmod_verbose - 1;
if (verbose_value == 1) {
result += add_cmd_modifier(buf, "verbose", &multi_mods);
} else {
char verbose_buf[NUMBUFLEN];
snprintf(verbose_buf, sizeof(verbose_buf), "%dverbose", verbose_value);
result += add_cmd_modifier(buf, verbose_buf, &multi_mods);
}
}
// flags from cmod->cmod_split
result += add_win_cmd_modifiers(buf, cmod, &multi_mods);
if (quote && buf != NULL) {
buf += result - 2;
*buf = '"';
}
return result;
}
/// Check for a <> code in a user command.
///
/// @param code points to the '<'. "len" the length of the <> (inclusive).
/// @param buf is where the result is to be added.
/// @param cmd the user command we're expanding
/// @param eap ex arguments
/// @param split_buf points to a buffer used for splitting, caller should free it.
/// @param split_len is the length of what "split_buf" contains.
///
/// @return the length of the replacement, which has been added to "buf".
/// Return -1 if there was no match, and only the "<" has been copied.
static size_t uc_check_code(char *code, size_t len, char *buf, ucmd_T *cmd, exarg_T *eap,
char **split_buf, size_t *split_len)
{
size_t result = 0;
char *p = code + 1;
size_t l = len - 2;
int quote = 0;
enum {
ct_ARGS,
ct_BANG,
ct_COUNT,
ct_LINE1,
ct_LINE2,
ct_RANGE,
ct_MODS,
ct_REGISTER,
ct_LT,
ct_NONE,
} type = ct_NONE;
if ((vim_strchr("qQfF", (uint8_t)(*p)) != NULL) && p[1] == '-') {
quote = (*p == 'q' || *p == 'Q') ? 1 : 2;
p += 2;
l -= 2;
}
l++;
if (l <= 1) {
// type = ct_NONE;
} else if (STRNICMP(p, "args>", l) == 0) {
type = ct_ARGS;
} else if (STRNICMP(p, "bang>", l) == 0) {
type = ct_BANG;
} else if (STRNICMP(p, "count>", l) == 0) {
type = ct_COUNT;
} else if (STRNICMP(p, "line1>", l) == 0) {
type = ct_LINE1;
} else if (STRNICMP(p, "line2>", l) == 0) {
type = ct_LINE2;
} else if (STRNICMP(p, "range>", l) == 0) {
type = ct_RANGE;
} else if (STRNICMP(p, "lt>", l) == 0) {
type = ct_LT;
} else if (STRNICMP(p, "reg>", l) == 0 || STRNICMP(p, "register>", l) == 0) {
type = ct_REGISTER;
} else if (STRNICMP(p, "mods>", l) == 0) {
type = ct_MODS;
}
switch (type) {
case ct_ARGS:
// Simple case first
if (*eap->arg == NUL) {
if (quote == 1) {
result = 2;
if (buf != NULL) {
STRCPY(buf, "''");
}
} else {
result = 0;
}
break;
}
// When specified there is a single argument don't split it.
// Works for ":Cmd %" when % is "a b c".
if ((eap->argt & EX_NOSPC) && quote == 2) {
quote = 1;
}
switch (quote) {
case 0: // No quoting, no splitting
result = strlen(eap->arg);
if (buf != NULL) {
STRCPY(buf, eap->arg);
}
break;
case 1: // Quote, but don't split
result = strlen(eap->arg) + 2;
for (p = eap->arg; *p; p++) {
if (*p == '\\' || *p == '"') {
result++;
}
}
if (buf != NULL) {
*buf++ = '"';
for (p = eap->arg; *p; p++) {
if (*p == '\\' || *p == '"') {
*buf++ = '\\';
}
*buf++ = *p;
}
*buf = '"';
}
break;
case 2: // Quote and split (<f-args>)
// This is hard, so only do it once, and cache the result
if (*split_buf == NULL) {
*split_buf = uc_split_args(eap->arg, eap->args, eap->arglens, eap->argc, split_len);
}
result = *split_len;
if (buf != NULL && result != 0) {
STRCPY(buf, *split_buf);
}
break;
}
break;
case ct_BANG:
result = eap->forceit ? 1 : 0;
if (quote) {
result += 2;
}
if (buf != NULL) {
if (quote) {
*buf++ = '"';
}
if (eap->forceit) {
*buf++ = '!';
}
if (quote) {
*buf = '"';
}
}
break;
case ct_LINE1:
case ct_LINE2:
case ct_RANGE:
case ct_COUNT: {
char num_buf[20];
int64_t num = type == ct_LINE1
? eap->line1
: (type == ct_LINE2
? eap->line2
: (type == ct_RANGE
? eap->addr_count
: (eap->addr_count > 0 ? eap->line2 : cmd->uc_def)));
size_t num_len;
snprintf(num_buf, sizeof(num_buf), "%" PRId64, num);
num_len = strlen(num_buf);
result = num_len;
if (quote) {
result += 2;
}
if (buf != NULL) {
if (quote) {
*buf++ = '"';
}
STRCPY(buf, num_buf);
buf += num_len;
if (quote) {
*buf = '"';
}
}
break;
}
case ct_MODS:
result = uc_mods(buf, &cmdmod, quote);
break;
case ct_REGISTER:
result = eap->regname ? 1 : 0;
if (quote) {
result += 2;
}
if (buf != NULL) {
if (quote) {
*buf++ = '\'';
}
if (eap->regname) {
*buf++ = (char)eap->regname;
}
if (quote) {
*buf = '\'';
}
}
break;
case ct_LT:
result = 1;
if (buf != NULL) {
*buf = '<';
}
break;
default:
// Not recognized: just copy the '<' and return -1.
result = (size_t)-1;
if (buf != NULL) {
*buf = '<';
}
break;
}
return result;
}
int do_ucmd(exarg_T *eap, bool preview)
{
char *end = NULL;
size_t split_len = 0;
char *split_buf = NULL;
ucmd_T *cmd;
if (eap->cmdidx == CMD_USER) {
cmd = USER_CMD(eap->useridx);
} else {
cmd = USER_CMD_GA(&prevwin_curwin()->w_buffer->b_ucmds, eap->useridx);
}
if (preview) {
assert(cmd->uc_preview_luaref > 0);
return nlua_do_ucmd(cmd, eap, true);
}
if (cmd->uc_luaref > 0) {
nlua_do_ucmd(cmd, eap, false);
return 0;
}
// Replace <> in the command by the arguments.
// First round: "buf" is NULL, compute length, allocate "buf".
// Second round: copy result into "buf".
char *buf = NULL;
while (true) {
char *p = cmd->uc_rep; // source
char *q = buf; // destination
size_t totlen = 0;
while (true) {
char *start = vim_strchr(p, '<');
if (start != NULL) {
end = vim_strchr(start + 1, '>');
}
if (buf != NULL) {
char *ksp;
for (ksp = p; *ksp != NUL && (uint8_t)(*ksp) != K_SPECIAL; ksp++) {}
if ((uint8_t)(*ksp) == K_SPECIAL
&& (start == NULL || ksp < start || end == NULL)
&& ((uint8_t)ksp[1] == KS_SPECIAL && ksp[2] == KE_FILLER)) {
// K_SPECIAL has been put in the buffer as K_SPECIAL
// KS_SPECIAL KE_FILLER, like for mappings, but
// do_cmdline() doesn't handle that, so convert it back.
size_t len = (size_t)(ksp - p);
if (len > 0) {
memmove(q, p, len);
q += len;
}
*q++ = (char)K_SPECIAL;
p = ksp + 3;
continue;
}
}
// break if no <item> is found
if (start == NULL || end == NULL) {
break;
}
// Include the '>'
end++;
// Take everything up to the '<'
size_t len = (size_t)(start - p);
if (buf == NULL) {
totlen += len;
} else {
memmove(q, p, len);
q += len;
}
len = uc_check_code(start, (size_t)(end - start), q, cmd, eap, &split_buf, &split_len);
if (len == (size_t)-1) {
// no match, continue after '<'
p = start + 1;
len = 1;
} else {
p = end;
}
if (buf == NULL) {
totlen += len;
} else {
q += len;
}
}
if (buf != NULL) { // second time here, finished
STRCPY(q, p);
break;
}
totlen += strlen(p); // Add on the trailing characters
buf = xmalloc(totlen + 1);
}
sctx_T save_current_sctx;
bool restore_current_sctx = false;
if ((cmd->uc_argt & EX_KEEPSCRIPT) == 0) {
restore_current_sctx = true;
save_current_sctx = current_sctx;
current_sctx.sc_sid = cmd->uc_script_ctx.sc_sid;
}
do_cmdline(buf, eap->ea_getline, eap->cookie,
DOCMD_VERBOSE|DOCMD_NOWAIT|DOCMD_KEYTYPED);
// Careful: Do not use "cmd" here, it may have become invalid if a user
// command was added.
if (restore_current_sctx) {
current_sctx = save_current_sctx;
}
xfree(buf);
xfree(split_buf);
return 0;
}
/// Gets a map of maps describing user-commands defined for buffer `buf` or
/// defined globally if `buf` is NULL.
///
/// @param buf Buffer to inspect, or NULL to get global commands.
///
/// @return Map of maps describing commands
Dict commands_array(buf_T *buf, Arena *arena)
{
garray_T *gap = (buf == NULL) ? &ucmds : &buf->b_ucmds;
Dict rv = arena_dict(arena, (size_t)gap->ga_len);
for (int i = 0; i < gap->ga_len; i++) {
char arg[2] = { 0, 0 };
Dict d = arena_dict(arena, 14);
ucmd_T *cmd = USER_CMD_GA(gap, i);
PUT_C(d, "name", CSTR_AS_OBJ(cmd->uc_name));
PUT_C(d, "definition", CSTR_AS_OBJ(cmd->uc_rep));
PUT_C(d, "script_id", INTEGER_OBJ(cmd->uc_script_ctx.sc_sid));
PUT_C(d, "bang", BOOLEAN_OBJ(!!(cmd->uc_argt & EX_BANG)));
PUT_C(d, "bar", BOOLEAN_OBJ(!!(cmd->uc_argt & EX_TRLBAR)));
PUT_C(d, "register", BOOLEAN_OBJ(!!(cmd->uc_argt & EX_REGSTR)));
PUT_C(d, "keepscript", BOOLEAN_OBJ(!!(cmd->uc_argt & EX_KEEPSCRIPT)));
PUT_C(d, "preview", BOOLEAN_OBJ(!!(cmd->uc_argt & EX_PREVIEW)));
switch (cmd->uc_argt & (EX_EXTRA | EX_NOSPC | EX_NEEDARG)) {
case 0:
arg[0] = '0'; break;
case (EX_EXTRA):
arg[0] = '*'; break;
case (EX_EXTRA | EX_NOSPC):
arg[0] = '?'; break;
case (EX_EXTRA | EX_NEEDARG):
arg[0] = '+'; break;
case (EX_EXTRA | EX_NOSPC | EX_NEEDARG):
arg[0] = '1'; break;
}
PUT_C(d, "nargs", CSTR_TO_ARENA_OBJ(arena, arg));
char *cmd_compl = get_command_complete(cmd->uc_compl);
PUT_C(d, "complete", (cmd_compl == NULL
? NIL : CSTR_AS_OBJ(cmd_compl)));
PUT_C(d, "complete_arg", cmd->uc_compl_arg == NULL
? NIL : CSTR_AS_OBJ(cmd->uc_compl_arg));
Object obj = NIL;
if (cmd->uc_argt & EX_COUNT) {
if (cmd->uc_def >= 0) {
obj = STRING_OBJ(arena_printf(arena, "%" PRId64, cmd->uc_def)); // -count=N
} else {
obj = CSTR_AS_OBJ("0"); // -count
}
}
PUT_C(d, "count", obj);
obj = NIL;
if (cmd->uc_argt & EX_RANGE) {
if (cmd->uc_argt & EX_DFLALL) {
obj = STATIC_CSTR_AS_OBJ("%"); // -range=%
} else if (cmd->uc_def >= 0) {
obj = STRING_OBJ(arena_printf(arena, "%" PRId64, cmd->uc_def)); // -range=N
} else {
obj = STATIC_CSTR_AS_OBJ("."); // -range
}
}
PUT_C(d, "range", obj);
obj = NIL;
for (int j = 0; addr_type_complete[j].expand != ADDR_NONE; j++) {
if (addr_type_complete[j].expand != ADDR_LINES
&& addr_type_complete[j].expand == cmd->uc_addr_type) {
obj = CSTR_AS_OBJ(addr_type_complete[j].name);
break;
}
}
PUT_C(d, "addr", obj);
PUT_C(rv, cmd->uc_name, DICT_OBJ(d));
}
return rv;
}
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