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-rw-r--r--src/nvim/fileio.c253
1 files changed, 144 insertions, 109 deletions
diff --git a/src/nvim/fileio.c b/src/nvim/fileio.c
index b9de46efc8..7be4107c94 100644
--- a/src/nvim/fileio.c
+++ b/src/nvim/fileio.c
@@ -99,8 +99,9 @@
// defined and will have to be executed.
//
typedef struct AutoCmd {
- char_u *cmd; // The command to be executed (NULL
- // when command has been removed)
+ char_u *cmd; // Command to be executed (NULL when
+ // command has been removed)
+ bool once; // "One shot": removed after execution
char nested; // If autocommands nest here
char last; // last command in list
scid_T scriptID; // script ID where defined
@@ -121,20 +122,20 @@ typedef struct AutoPat {
char last; // last pattern for apply_autocmds()
} AutoPat;
-/*
- * struct used to keep status while executing autocommands for an event.
- */
+///
+/// Struct used to keep status while executing autocommands for an event.
+///
typedef struct AutoPatCmd {
- AutoPat *curpat; /* next AutoPat to examine */
- AutoCmd *nextcmd; /* next AutoCmd to execute */
- int group; /* group being used */
- char_u *fname; /* fname to match with */
- char_u *sfname; /* sfname to match with */
- char_u *tail; /* tail of fname */
- event_T event; /* current event */
- int arg_bufnr; /* initially equal to <abuf>, set to zero when
- buf is deleted */
- struct AutoPatCmd *next; /* chain of active apc-s for auto-invalidation*/
+ AutoPat *curpat; // next AutoPat to examine
+ AutoCmd *nextcmd; // next AutoCmd to execute
+ int group; // group being used
+ char_u *fname; // fname to match with
+ char_u *sfname; // sfname to match with
+ char_u *tail; // tail of fname
+ event_T event; // current event
+ int arg_bufnr; // initially equal to <abuf>, set to zero when
+ // buf is deleted
+ struct AutoPatCmd *next; // chain of active apc-s for auto-invalidation
} AutoPatCmd;
#define AUGROUP_DEFAULT -1 /* default autocmd group */
@@ -5563,64 +5564,75 @@ static void show_autocmd(AutoPat *ap, event_T event)
}
}
-/*
- * Mark an autocommand pattern for deletion.
- */
+// Mark an autocommand handler for deletion.
static void au_remove_pat(AutoPat *ap)
{
xfree(ap->pat);
ap->pat = NULL;
ap->buflocal_nr = -1;
- au_need_clean = TRUE;
+ au_need_clean = true;
}
-/*
- * Mark all commands for a pattern for deletion.
- */
+// Mark all commands for a pattern for deletion.
static void au_remove_cmds(AutoPat *ap)
{
- AutoCmd *ac;
-
- for (ac = ap->cmds; ac != NULL; ac = ac->next) {
+ for (AutoCmd *ac = ap->cmds; ac != NULL; ac = ac->next) {
xfree(ac->cmd);
ac->cmd = NULL;
}
- au_need_clean = TRUE;
+ au_need_clean = true;
}
-/*
- * Cleanup autocommands and patterns that have been deleted.
- * This is only done when not executing autocommands.
- */
+// Delete one command from an autocmd pattern.
+static void au_del_cmd(AutoCmd *ac)
+{
+ xfree(ac->cmd);
+ ac->cmd = NULL;
+ au_need_clean = true;
+}
+
+/// Cleanup autocommands and patterns that have been deleted.
+/// This is only done when not executing autocommands.
static void au_cleanup(void)
{
AutoPat *ap, **prev_ap;
AutoCmd *ac, **prev_ac;
event_T event;
- if (autocmd_busy || !au_need_clean)
+ if (autocmd_busy || !au_need_clean) {
return;
+ }
- /* loop over all events */
+ // Loop over all events.
for (event = (event_T)0; (int)event < (int)NUM_EVENTS;
event = (event_T)((int)event + 1)) {
- /* loop over all autocommand patterns */
+ // Loop over all autocommand patterns.
prev_ap = &(first_autopat[(int)event]);
for (ap = *prev_ap; ap != NULL; ap = *prev_ap) {
- /* loop over all commands for this pattern */
+ // Loop over all commands for this pattern.
prev_ac = &(ap->cmds);
+ bool has_cmd = false;
+
for (ac = *prev_ac; ac != NULL; ac = *prev_ac) {
- /* remove the command if the pattern is to be deleted or when
- * the command has been marked for deletion */
+ // Remove the command if the pattern is to be deleted or when
+ // the command has been marked for deletion.
if (ap->pat == NULL || ac->cmd == NULL) {
*prev_ac = ac->next;
xfree(ac->cmd);
xfree(ac);
- } else
+ } else {
+ has_cmd = true;
prev_ac = &(ac->next);
+ }
+ }
+
+ if (ap->pat != NULL && !has_cmd) {
+ // Pattern was not marked for deletion, but all of its commands were.
+ // So mark the pattern for deletion.
+ au_remove_pat(ap);
}
- /* remove the pattern if it has been marked for deletion */
+ // Remove the pattern if it has been marked for deletion.
if (ap->pat == NULL) {
if (ap->next == NULL) {
if (prev_ap == &(first_autopat[(int)event])) {
@@ -5634,12 +5646,13 @@ static void au_cleanup(void)
*prev_ap = ap->next;
vim_regfree(ap->reg_prog);
xfree(ap);
- } else
+ } else {
prev_ap = &(ap->next);
+ }
}
}
- au_need_clean = FALSE;
+ au_need_clean = false;
}
/*
@@ -5674,18 +5687,18 @@ void aubuflocal_remove(buf_T *buf)
au_cleanup();
}
-/*
- * Add an autocmd group name.
- * Return it's ID. Returns AUGROUP_ERROR (< 0) for error.
- */
+// Add an autocmd group name.
+// Return its ID. Returns AUGROUP_ERROR (< 0) for error.
static int au_new_group(char_u *name)
{
int i = au_find_group(name);
- if (i == AUGROUP_ERROR) { /* the group doesn't exist yet, add it */
- /* First try using a free entry. */
- for (i = 0; i < augroups.ga_len; ++i)
- if (AUGROUP_NAME(i) == NULL)
+ if (i == AUGROUP_ERROR) { // the group doesn't exist yet, add it.
+ // First try using a free entry.
+ for (i = 0; i < augroups.ga_len; i++) {
+ if (AUGROUP_NAME(i) == NULL) {
break;
+ }
+ }
if (i == augroups.ga_len) {
ga_grow(&augroups, 1);
}
@@ -5701,9 +5714,7 @@ static int au_new_group(char_u *name)
static void au_del_group(char_u *name)
{
- int i;
-
- i = au_find_group(name);
+ int i = au_find_group(name);
if (i == AUGROUP_ERROR) { // the group doesn't exist
EMSG2(_("E367: No such group: \"%s\""), name);
} else if (i == current_augroup) {
@@ -5760,23 +5771,22 @@ bool au_has_group(const char_u *name)
return au_find_group(name) != AUGROUP_ERROR;
}
-/*
- * ":augroup {name}".
- */
+/// ":augroup {name}".
void do_augroup(char_u *arg, int del_group)
{
if (del_group) {
- if (*arg == NUL)
+ if (*arg == NUL) {
EMSG(_(e_argreq));
- else
+ } else {
au_del_group(arg);
- } else if (STRICMP(arg, "end") == 0) /* ":aug end": back to group 0 */
+ }
+ } else if (STRICMP(arg, "end") == 0) { // ":aug end": back to group 0
current_augroup = AUGROUP_DEFAULT;
- else if (*arg) { /* ":aug xxx": switch to group xxx */
+ } else if (*arg) { // ":aug xxx": switch to group xxx
int i = au_new_group(arg);
if (i != AUGROUP_ERROR)
current_augroup = i;
- } else { /* ":aug": list the group names */
+ } else { // ":aug": list the group names
msg_start();
for (int i = 0; i < augroups.ga_len; ++i) {
if (AUGROUP_NAME(i) != NULL) {
@@ -5957,38 +5967,38 @@ void au_event_restore(char_u *old_ei)
}
}
-/*
- * do_autocmd() -- implements the :autocmd command. Can be used in the
- * following ways:
- *
- * :autocmd <event> <pat> <cmd> Add <cmd> to the list of commands that
- * will be automatically executed for <event>
- * when editing a file matching <pat>, in
- * the current group.
- * :autocmd <event> <pat> Show the autocommands associated with
- * <event> and <pat>.
- * :autocmd <event> Show the autocommands associated with
- * <event>.
- * :autocmd Show all autocommands.
- * :autocmd! <event> <pat> <cmd> Remove all autocommands associated with
- * <event> and <pat>, and add the command
- * <cmd>, for the current group.
- * :autocmd! <event> <pat> Remove all autocommands associated with
- * <event> and <pat> for the current group.
- * :autocmd! <event> Remove all autocommands associated with
- * <event> for the current group.
- * :autocmd! Remove ALL autocommands for the current
- * group.
- *
- * Multiple events and patterns may be given separated by commas. Here are
- * some examples:
- * :autocmd bufread,bufenter *.c,*.h set tw=0 smartindent noic
- * :autocmd bufleave * set tw=79 nosmartindent ic infercase
- *
- * :autocmd * *.c show all autocommands for *.c files.
- *
- * Mostly a {group} argument can optionally appear before <event>.
- */
+// Implements :autocmd.
+// Defines an autocmd (does not execute; cf. apply_autocmds_group).
+//
+// Can be used in the following ways:
+//
+// :autocmd <event> <pat> <cmd> Add <cmd> to the list of commands that
+// will be automatically executed for <event>
+// when editing a file matching <pat>, in
+// the current group.
+// :autocmd <event> <pat> Show the autocommands associated with
+// <event> and <pat>.
+// :autocmd <event> Show the autocommands associated with
+// <event>.
+// :autocmd Show all autocommands.
+// :autocmd! <event> <pat> <cmd> Remove all autocommands associated with
+// <event> and <pat>, and add the command
+// <cmd>, for the current group.
+// :autocmd! <event> <pat> Remove all autocommands associated with
+// <event> and <pat> for the current group.
+// :autocmd! <event> Remove all autocommands associated with
+// <event> for the current group.
+// :autocmd! Remove ALL autocommands for the current
+// group.
+//
+// Multiple events and patterns may be given separated by commas. Here are
+// some examples:
+// :autocmd bufread,bufenter *.c,*.h set tw=0 smartindent noic
+// :autocmd bufleave * set tw=79 nosmartindent ic infercase
+//
+// :autocmd * *.c show all autocommands for *.c files.
+//
+// Mostly a {group} argument can optionally appear before <event>.
void do_autocmd(char_u *arg_in, int forceit)
{
char_u *arg = arg_in;
@@ -5997,6 +6007,7 @@ void do_autocmd(char_u *arg_in, int forceit)
char_u *cmd;
int need_free = false;
int nested = false;
+ bool once = false;
int group;
if (*arg == '|') {
@@ -6046,12 +6057,23 @@ void do_autocmd(char_u *arg_in, int forceit)
}
}
- // Check for "nested" flag.
cmd = skipwhite(cmd);
- if (*cmd != NUL && STRNCMP(cmd, "nested", 6) == 0
- && ascii_iswhite(cmd[6])) {
- nested = true;
- cmd = skipwhite(cmd + 6);
+ for (size_t i = 0; i < 2; i++) {
+ if (*cmd != NUL) {
+ // Check for "++once" flag.
+ if (!once && STRNCMP(cmd, "++once", 6) == 0 && ascii_iswhite(cmd[6])) {
+ once = true;
+ cmd = skipwhite(cmd + 6);
+ }
+ // Check for "++nested" flag.
+ if (!nested
+ && ((STRNCMP(cmd, "++nested", 8) == 0 && ascii_iswhite(cmd[8]))
+ // Deprecated form (without "++").
+ || (STRNCMP(cmd, "nested", 6) == 0 && ascii_iswhite(cmd[6])))) {
+ nested = true;
+ cmd = skipwhite(cmd + ('+' == cmd[0] ? 8 : 6));
+ }
+ }
}
// Find the start of the commands.
@@ -6081,7 +6103,8 @@ void do_autocmd(char_u *arg_in, int forceit)
if (*arg == '*' || *arg == NUL || *arg == '|') {
for (event_T event = (event_T)0; (int)event < (int)NUM_EVENTS;
event = (event_T)((int)event + 1)) {
- if (do_autocmd_event(event, pat, nested, cmd, forceit, group) == FAIL) {
+ if (do_autocmd_event(event, pat, once, nested, cmd, forceit, group)
+ == FAIL) {
break;
}
}
@@ -6089,7 +6112,8 @@ void do_autocmd(char_u *arg_in, int forceit)
while (*arg && *arg != '|' && !ascii_iswhite(*arg)) {
event_T event = event_name2nr(arg, &arg);
assert(event < NUM_EVENTS);
- if (do_autocmd_event(event, pat, nested, cmd, forceit, group) == FAIL) {
+ if (do_autocmd_event(event, pat, once, nested, cmd, forceit, group)
+ == FAIL) {
break;
}
}
@@ -6127,14 +6151,15 @@ static int au_get_grouparg(char_u **argp)
return group;
}
-/*
- * do_autocmd() for one event.
- * If *pat == NUL do for all patterns.
- * If *cmd == NUL show entries.
- * If forceit == TRUE delete entries.
- * If group is not AUGROUP_ALL, only use this group.
- */
-static int do_autocmd_event(event_T event, char_u *pat, int nested, char_u *cmd, int forceit, int group)
+// do_autocmd() for one event.
+// Defines an autocmd (does not execute; cf. apply_autocmds_group).
+//
+// If *pat == NUL: do for all patterns.
+// If *cmd == NUL: show entries.
+// If forceit == TRUE: delete entries.
+// If group is not AUGROUP_ALL: only use this group.
+static int do_autocmd_event(event_T event, char_u *pat, bool once, int nested,
+ char_u *cmd, int forceit, int group)
{
AutoPat *ap;
AutoPat **prev_ap;
@@ -6333,6 +6358,7 @@ static int do_autocmd_event(event_T event, char_u *pat, int nested, char_u *cmd,
ac->scriptID = current_SID;
ac->next = NULL;
*prev_ac = ac;
+ ac->once = once;
ac->nested = nested;
}
}
@@ -6996,7 +7022,7 @@ static bool apply_autocmds_group(event_T event, char_u *fname, char_u *fname_io,
patcmd.event = event;
patcmd.arg_bufnr = autocmd_bufnr;
patcmd.next = NULL;
- auto_next_pat(&patcmd, FALSE);
+ auto_next_pat(&patcmd, false);
/* found one, start executing the autocommands */
if (patcmd.curpat != NULL) {
@@ -7020,8 +7046,11 @@ static bool apply_autocmds_group(event_T event, char_u *fname, char_u *fname_io,
}
ap->last = true;
check_lnums(true); // make sure cursor and topline are valid
+
+ // Execute the autocmd. The `getnextac` callback handles iteration.
do_cmdline(NULL, getnextac, (void *)&patcmd,
DOCMD_NOWAIT|DOCMD_VERBOSE|DOCMD_REPEAT);
+
if (eap != NULL) {
(void)set_cmdarg(NULL, save_cmdarg);
set_vim_var_nr(VV_CMDBANG, save_cmdbang);
@@ -7233,12 +7262,18 @@ char_u *getnextac(int c, void *cookie, int indent)
verbose_leave_scroll();
}
retval = vim_strsave(ac->cmd);
+ // Remove one-shot ("once") autocmd in anticipation of its execution.
+ if (ac->once) {
+ au_del_cmd(ac);
+ }
autocmd_nested = ac->nested;
current_SID = ac->scriptID;
- if (ac->last)
+ if (ac->last) {
acp->nextcmd = NULL;
- else
+ } else {
acp->nextcmd = ac->next;
+ }
+
return retval;
}
generated by cgit (git 2.34.1) at 2025-07-23 21:16:55 +0000