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d29aa12117
additional payload (to reduce problems with lifetime of objects) and are delivered to one or more event sinks. This is more powerful and reduces the complex dependencies between control mode and hooks. Events are now used for hooks, control mode notifications and for monitors (set-hook -B). wait-for can now wait for an event to fire (-E flag, with -F to for filter), with -v to print the payload, as well as listing (-l) waiting clients on an event and forcing one to wake (-w). A few additional hooks are also now available (pane-created, pane-resized, etc) and some of the existing ones have additional format variables available.
127 lines
3.1 KiB
C
127 lines
3.1 KiB
C
/* $OpenBSD: regsub.c,v 1.10 2026/07/08 11:04:51 nicm Exp $ */
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/*
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* Copyright (c) 2019 Nicholas Marriott <nicholas.marriott@gmail.com>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
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* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <regex.h>
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#include <string.h>
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#include "tmux.h"
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static void
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regsub_copy(char **buf, ssize_t *len, const char *text, size_t start,
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size_t end)
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{
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size_t add = end - start;
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*buf = xrealloc(*buf, (*len) + add + 1);
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memcpy((*buf) + *len, text + start, add);
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(*len) += add;
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}
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static void
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regsub_expand(char **buf, ssize_t *len, const char *with, const char *text,
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regmatch_t *m, u_int n)
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{
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const char *cp;
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u_int i;
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for (cp = with; *cp != '\0'; cp++) {
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if (cp[0] == '\\' && cp[1] != '\0') {
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cp++;
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if (*cp >= '0' && *cp <= '9') {
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i = *cp - '0';
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if (i < n && m[i].rm_so != m[i].rm_eo) {
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regsub_copy(buf, len, text, m[i].rm_so,
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m[i].rm_eo);
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continue;
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}
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}
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}
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*buf = xrealloc(*buf, (*len) + 2);
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(*buf)[(*len)++] = *cp;
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}
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}
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char *
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regsub(const char *pattern, const char *with, const char *text, int flags)
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{
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regex_t r;
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regmatch_t m[10];
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ssize_t start, end, last, len = 0;
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int empty = 0;
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char *buf = NULL;
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if (*text == '\0')
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return (xstrdup(""));
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if (*pattern == '\0')
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return (xstrdup(text));
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if (regcomp(&r, pattern, flags) != 0)
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return (NULL);
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start = 0;
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last = 0;
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end = strlen(text);
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while (start <= end) {
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if (regexec(&r, text + start, nitems(m), m, 0) != 0) {
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regsub_copy(&buf, &len, text, start, end);
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break;
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}
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/*
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* Append any text not part of this match (from the end of the
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* last match).
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*/
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regsub_copy(&buf, &len, text, last, m[0].rm_so + start);
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/* For anchored patterns, replace the first match only. */
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if (*pattern == '^') {
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regsub_expand(&buf, &len, with, text + start, m,
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nitems(m));
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last = start + m[0].rm_eo;
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regsub_copy(&buf, &len, text, last, end);
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break;
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}
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/*
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* If the last match was empty and this one isn't (it is either
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* later or has matched text), expand this match. If it is
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* empty, move on one character and try again from there.
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*/
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if (empty ||
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start + m[0].rm_so != last ||
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m[0].rm_so != m[0].rm_eo) {
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regsub_expand(&buf, &len, with, text + start, m,
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nitems(m));
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last = start + m[0].rm_eo;
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start += m[0].rm_eo;
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empty = 0;
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} else {
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last = start + m[0].rm_eo;
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start += m[0].rm_eo + 1;
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empty = 1;
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}
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}
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buf[len] = '\0';
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regfree(&r);
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return (buf);
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}
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