stash: teach 'push' (and 'create_stash') to honor pathspec
[git.git] / strbuf.c
blob8fec6579f70cae4bc6b330e4e0ca3e7cc595f366
1 #include "cache.h"
2 #include "refs.h"
3 #include "utf8.h"
5 int starts_with(const char *str, const char *prefix)
7 for (; ; str++, prefix++)
8 if (!*prefix)
9 return 1;
10 else if (*str != *prefix)
11 return 0;
15 * Used as the default ->buf value, so that people can always assume
16 * buf is non NULL and ->buf is NUL terminated even for a freshly
17 * initialized strbuf.
19 char strbuf_slopbuf[1];
21 void strbuf_init(struct strbuf *sb, size_t hint)
23 sb->alloc = sb->len = 0;
24 sb->buf = strbuf_slopbuf;
25 if (hint)
26 strbuf_grow(sb, hint);
29 void strbuf_release(struct strbuf *sb)
31 if (sb->alloc) {
32 free(sb->buf);
33 strbuf_init(sb, 0);
37 char *strbuf_detach(struct strbuf *sb, size_t *sz)
39 char *res;
40 strbuf_grow(sb, 0);
41 res = sb->buf;
42 if (sz)
43 *sz = sb->len;
44 strbuf_init(sb, 0);
45 return res;
48 void strbuf_attach(struct strbuf *sb, void *buf, size_t len, size_t alloc)
50 strbuf_release(sb);
51 sb->buf = buf;
52 sb->len = len;
53 sb->alloc = alloc;
54 strbuf_grow(sb, 0);
55 sb->buf[sb->len] = '\0';
58 void strbuf_grow(struct strbuf *sb, size_t extra)
60 int new_buf = !sb->alloc;
61 if (unsigned_add_overflows(extra, 1) ||
62 unsigned_add_overflows(sb->len, extra + 1))
63 die("you want to use way too much memory");
64 if (new_buf)
65 sb->buf = NULL;
66 ALLOC_GROW(sb->buf, sb->len + extra + 1, sb->alloc);
67 if (new_buf)
68 sb->buf[0] = '\0';
71 void strbuf_trim(struct strbuf *sb)
73 strbuf_rtrim(sb);
74 strbuf_ltrim(sb);
76 void strbuf_rtrim(struct strbuf *sb)
78 while (sb->len > 0 && isspace((unsigned char)sb->buf[sb->len - 1]))
79 sb->len--;
80 sb->buf[sb->len] = '\0';
83 void strbuf_ltrim(struct strbuf *sb)
85 char *b = sb->buf;
86 while (sb->len > 0 && isspace(*b)) {
87 b++;
88 sb->len--;
90 memmove(sb->buf, b, sb->len);
91 sb->buf[sb->len] = '\0';
94 int strbuf_reencode(struct strbuf *sb, const char *from, const char *to)
96 char *out;
97 int len;
99 if (same_encoding(from, to))
100 return 0;
102 out = reencode_string_len(sb->buf, sb->len, to, from, &len);
103 if (!out)
104 return -1;
106 strbuf_attach(sb, out, len, len);
107 return 0;
110 void strbuf_tolower(struct strbuf *sb)
112 char *p = sb->buf, *end = sb->buf + sb->len;
113 for (; p < end; p++)
114 *p = tolower(*p);
117 struct strbuf **strbuf_split_buf(const char *str, size_t slen,
118 int terminator, int max)
120 struct strbuf **ret = NULL;
121 size_t nr = 0, alloc = 0;
122 struct strbuf *t;
124 while (slen) {
125 int len = slen;
126 if (max <= 0 || nr + 1 < max) {
127 const char *end = memchr(str, terminator, slen);
128 if (end)
129 len = end - str + 1;
131 t = xmalloc(sizeof(struct strbuf));
132 strbuf_init(t, len);
133 strbuf_add(t, str, len);
134 ALLOC_GROW(ret, nr + 2, alloc);
135 ret[nr++] = t;
136 str += len;
137 slen -= len;
139 ALLOC_GROW(ret, nr + 1, alloc); /* In case string was empty */
140 ret[nr] = NULL;
141 return ret;
144 void strbuf_list_free(struct strbuf **sbs)
146 struct strbuf **s = sbs;
148 while (*s) {
149 strbuf_release(*s);
150 free(*s++);
152 free(sbs);
155 int strbuf_cmp(const struct strbuf *a, const struct strbuf *b)
157 int len = a->len < b->len ? a->len: b->len;
158 int cmp = memcmp(a->buf, b->buf, len);
159 if (cmp)
160 return cmp;
161 return a->len < b->len ? -1: a->len != b->len;
164 void strbuf_splice(struct strbuf *sb, size_t pos, size_t len,
165 const void *data, size_t dlen)
167 if (unsigned_add_overflows(pos, len))
168 die("you want to use way too much memory");
169 if (pos > sb->len)
170 die("`pos' is too far after the end of the buffer");
171 if (pos + len > sb->len)
172 die("`pos + len' is too far after the end of the buffer");
174 if (dlen >= len)
175 strbuf_grow(sb, dlen - len);
176 memmove(sb->buf + pos + dlen,
177 sb->buf + pos + len,
178 sb->len - pos - len);
179 memcpy(sb->buf + pos, data, dlen);
180 strbuf_setlen(sb, sb->len + dlen - len);
183 void strbuf_insert(struct strbuf *sb, size_t pos, const void *data, size_t len)
185 strbuf_splice(sb, pos, 0, data, len);
188 void strbuf_remove(struct strbuf *sb, size_t pos, size_t len)
190 strbuf_splice(sb, pos, len, "", 0);
193 void strbuf_add(struct strbuf *sb, const void *data, size_t len)
195 strbuf_grow(sb, len);
196 memcpy(sb->buf + sb->len, data, len);
197 strbuf_setlen(sb, sb->len + len);
200 void strbuf_addbuf(struct strbuf *sb, const struct strbuf *sb2)
202 strbuf_grow(sb, sb2->len);
203 memcpy(sb->buf + sb->len, sb2->buf, sb2->len);
204 strbuf_setlen(sb, sb->len + sb2->len);
207 void strbuf_adddup(struct strbuf *sb, size_t pos, size_t len)
209 strbuf_grow(sb, len);
210 memcpy(sb->buf + sb->len, sb->buf + pos, len);
211 strbuf_setlen(sb, sb->len + len);
214 void strbuf_addchars(struct strbuf *sb, int c, size_t n)
216 strbuf_grow(sb, n);
217 memset(sb->buf + sb->len, c, n);
218 strbuf_setlen(sb, sb->len + n);
221 void strbuf_addf(struct strbuf *sb, const char *fmt, ...)
223 va_list ap;
224 va_start(ap, fmt);
225 strbuf_vaddf(sb, fmt, ap);
226 va_end(ap);
229 static void add_lines(struct strbuf *out,
230 const char *prefix1,
231 const char *prefix2,
232 const char *buf, size_t size)
234 while (size) {
235 const char *prefix;
236 const char *next = memchr(buf, '\n', size);
237 next = next ? (next + 1) : (buf + size);
239 prefix = ((prefix2 && (buf[0] == '\n' || buf[0] == '\t'))
240 ? prefix2 : prefix1);
241 strbuf_addstr(out, prefix);
242 strbuf_add(out, buf, next - buf);
243 size -= next - buf;
244 buf = next;
246 strbuf_complete_line(out);
249 void strbuf_add_commented_lines(struct strbuf *out, const char *buf, size_t size)
251 static char prefix1[3];
252 static char prefix2[2];
254 if (prefix1[0] != comment_line_char) {
255 xsnprintf(prefix1, sizeof(prefix1), "%c ", comment_line_char);
256 xsnprintf(prefix2, sizeof(prefix2), "%c", comment_line_char);
258 add_lines(out, prefix1, prefix2, buf, size);
261 void strbuf_commented_addf(struct strbuf *sb, const char *fmt, ...)
263 va_list params;
264 struct strbuf buf = STRBUF_INIT;
265 int incomplete_line = sb->len && sb->buf[sb->len - 1] != '\n';
267 va_start(params, fmt);
268 strbuf_vaddf(&buf, fmt, params);
269 va_end(params);
271 strbuf_add_commented_lines(sb, buf.buf, buf.len);
272 if (incomplete_line)
273 sb->buf[--sb->len] = '\0';
275 strbuf_release(&buf);
278 void strbuf_vaddf(struct strbuf *sb, const char *fmt, va_list ap)
280 int len;
281 va_list cp;
283 if (!strbuf_avail(sb))
284 strbuf_grow(sb, 64);
285 va_copy(cp, ap);
286 len = vsnprintf(sb->buf + sb->len, sb->alloc - sb->len, fmt, cp);
287 va_end(cp);
288 if (len < 0)
289 die("BUG: your vsnprintf is broken (returned %d)", len);
290 if (len > strbuf_avail(sb)) {
291 strbuf_grow(sb, len);
292 len = vsnprintf(sb->buf + sb->len, sb->alloc - sb->len, fmt, ap);
293 if (len > strbuf_avail(sb))
294 die("BUG: your vsnprintf is broken (insatiable)");
296 strbuf_setlen(sb, sb->len + len);
299 void strbuf_expand(struct strbuf *sb, const char *format, expand_fn_t fn,
300 void *context)
302 for (;;) {
303 const char *percent;
304 size_t consumed;
306 percent = strchrnul(format, '%');
307 strbuf_add(sb, format, percent - format);
308 if (!*percent)
309 break;
310 format = percent + 1;
312 if (*format == '%') {
313 strbuf_addch(sb, '%');
314 format++;
315 continue;
318 consumed = fn(sb, format, context);
319 if (consumed)
320 format += consumed;
321 else
322 strbuf_addch(sb, '%');
326 size_t strbuf_expand_dict_cb(struct strbuf *sb, const char *placeholder,
327 void *context)
329 struct strbuf_expand_dict_entry *e = context;
330 size_t len;
332 for (; e->placeholder && (len = strlen(e->placeholder)); e++) {
333 if (!strncmp(placeholder, e->placeholder, len)) {
334 if (e->value)
335 strbuf_addstr(sb, e->value);
336 return len;
339 return 0;
342 void strbuf_addbuf_percentquote(struct strbuf *dst, const struct strbuf *src)
344 int i, len = src->len;
346 for (i = 0; i < len; i++) {
347 if (src->buf[i] == '%')
348 strbuf_addch(dst, '%');
349 strbuf_addch(dst, src->buf[i]);
353 size_t strbuf_fread(struct strbuf *sb, size_t size, FILE *f)
355 size_t res;
356 size_t oldalloc = sb->alloc;
358 strbuf_grow(sb, size);
359 res = fread(sb->buf + sb->len, 1, size, f);
360 if (res > 0)
361 strbuf_setlen(sb, sb->len + res);
362 else if (oldalloc == 0)
363 strbuf_release(sb);
364 return res;
367 ssize_t strbuf_read(struct strbuf *sb, int fd, size_t hint)
369 size_t oldlen = sb->len;
370 size_t oldalloc = sb->alloc;
372 strbuf_grow(sb, hint ? hint : 8192);
373 for (;;) {
374 ssize_t want = sb->alloc - sb->len - 1;
375 ssize_t got = read_in_full(fd, sb->buf + sb->len, want);
377 if (got < 0) {
378 if (oldalloc == 0)
379 strbuf_release(sb);
380 else
381 strbuf_setlen(sb, oldlen);
382 return -1;
384 sb->len += got;
385 if (got < want)
386 break;
387 strbuf_grow(sb, 8192);
390 sb->buf[sb->len] = '\0';
391 return sb->len - oldlen;
394 ssize_t strbuf_read_once(struct strbuf *sb, int fd, size_t hint)
396 ssize_t cnt;
398 strbuf_grow(sb, hint ? hint : 8192);
399 cnt = xread(fd, sb->buf + sb->len, sb->alloc - sb->len - 1);
400 if (cnt > 0)
401 strbuf_setlen(sb, sb->len + cnt);
402 return cnt;
405 ssize_t strbuf_write(struct strbuf *sb, FILE *f)
407 return sb->len ? fwrite(sb->buf, 1, sb->len, f) : 0;
411 #define STRBUF_MAXLINK (2*PATH_MAX)
413 int strbuf_readlink(struct strbuf *sb, const char *path, size_t hint)
415 size_t oldalloc = sb->alloc;
417 if (hint < 32)
418 hint = 32;
420 while (hint < STRBUF_MAXLINK) {
421 int len;
423 strbuf_grow(sb, hint);
424 len = readlink(path, sb->buf, hint);
425 if (len < 0) {
426 if (errno != ERANGE)
427 break;
428 } else if (len < hint) {
429 strbuf_setlen(sb, len);
430 return 0;
433 /* .. the buffer was too small - try again */
434 hint *= 2;
436 if (oldalloc == 0)
437 strbuf_release(sb);
438 return -1;
441 int strbuf_getcwd(struct strbuf *sb)
443 size_t oldalloc = sb->alloc;
444 size_t guessed_len = 128;
446 for (;; guessed_len *= 2) {
447 strbuf_grow(sb, guessed_len);
448 if (getcwd(sb->buf, sb->alloc)) {
449 strbuf_setlen(sb, strlen(sb->buf));
450 return 0;
452 if (errno != ERANGE)
453 break;
455 if (oldalloc == 0)
456 strbuf_release(sb);
457 else
458 strbuf_reset(sb);
459 return -1;
462 #ifdef HAVE_GETDELIM
463 int strbuf_getwholeline(struct strbuf *sb, FILE *fp, int term)
465 ssize_t r;
467 if (feof(fp))
468 return EOF;
470 strbuf_reset(sb);
472 /* Translate slopbuf to NULL, as we cannot call realloc on it */
473 if (!sb->alloc)
474 sb->buf = NULL;
475 r = getdelim(&sb->buf, &sb->alloc, term, fp);
477 if (r > 0) {
478 sb->len = r;
479 return 0;
481 assert(r == -1);
484 * Normally we would have called xrealloc, which will try to free
485 * memory and recover. But we have no way to tell getdelim() to do so.
486 * Worse, we cannot try to recover ENOMEM ourselves, because we have
487 * no idea how many bytes were read by getdelim.
489 * Dying here is reasonable. It mirrors what xrealloc would do on
490 * catastrophic memory failure. We skip the opportunity to free pack
491 * memory and retry, but that's unlikely to help for a malloc small
492 * enough to hold a single line of input, anyway.
494 if (errno == ENOMEM)
495 die("Out of memory, getdelim failed");
498 * Restore strbuf invariants; if getdelim left us with a NULL pointer,
499 * we can just re-init, but otherwise we should make sure that our
500 * length is empty, and that the result is NUL-terminated.
502 if (!sb->buf)
503 strbuf_init(sb, 0);
504 else
505 strbuf_reset(sb);
506 return EOF;
508 #else
509 int strbuf_getwholeline(struct strbuf *sb, FILE *fp, int term)
511 int ch;
513 if (feof(fp))
514 return EOF;
516 strbuf_reset(sb);
517 flockfile(fp);
518 while ((ch = getc_unlocked(fp)) != EOF) {
519 if (!strbuf_avail(sb))
520 strbuf_grow(sb, 1);
521 sb->buf[sb->len++] = ch;
522 if (ch == term)
523 break;
525 funlockfile(fp);
526 if (ch == EOF && sb->len == 0)
527 return EOF;
529 sb->buf[sb->len] = '\0';
530 return 0;
532 #endif
534 static int strbuf_getdelim(struct strbuf *sb, FILE *fp, int term)
536 if (strbuf_getwholeline(sb, fp, term))
537 return EOF;
538 if (sb->buf[sb->len - 1] == term)
539 strbuf_setlen(sb, sb->len - 1);
540 return 0;
543 int strbuf_getline(struct strbuf *sb, FILE *fp)
545 if (strbuf_getwholeline(sb, fp, '\n'))
546 return EOF;
547 if (sb->buf[sb->len - 1] == '\n') {
548 strbuf_setlen(sb, sb->len - 1);
549 if (sb->len && sb->buf[sb->len - 1] == '\r')
550 strbuf_setlen(sb, sb->len - 1);
552 return 0;
555 int strbuf_getline_lf(struct strbuf *sb, FILE *fp)
557 return strbuf_getdelim(sb, fp, '\n');
560 int strbuf_getline_nul(struct strbuf *sb, FILE *fp)
562 return strbuf_getdelim(sb, fp, '\0');
565 int strbuf_getwholeline_fd(struct strbuf *sb, int fd, int term)
567 strbuf_reset(sb);
569 while (1) {
570 char ch;
571 ssize_t len = xread(fd, &ch, 1);
572 if (len <= 0)
573 return EOF;
574 strbuf_addch(sb, ch);
575 if (ch == term)
576 break;
578 return 0;
581 ssize_t strbuf_read_file(struct strbuf *sb, const char *path, size_t hint)
583 int fd;
584 ssize_t len;
586 fd = open(path, O_RDONLY);
587 if (fd < 0)
588 return -1;
589 len = strbuf_read(sb, fd, hint);
590 close(fd);
591 if (len < 0)
592 return -1;
594 return len;
597 void strbuf_add_lines(struct strbuf *out, const char *prefix,
598 const char *buf, size_t size)
600 add_lines(out, prefix, NULL, buf, size);
603 void strbuf_addstr_xml_quoted(struct strbuf *buf, const char *s)
605 while (*s) {
606 size_t len = strcspn(s, "\"<>&");
607 strbuf_add(buf, s, len);
608 s += len;
609 switch (*s) {
610 case '"':
611 strbuf_addstr(buf, "&quot;");
612 break;
613 case '<':
614 strbuf_addstr(buf, "&lt;");
615 break;
616 case '>':
617 strbuf_addstr(buf, "&gt;");
618 break;
619 case '&':
620 strbuf_addstr(buf, "&amp;");
621 break;
622 case 0:
623 return;
625 s++;
629 static int is_rfc3986_reserved(char ch)
631 switch (ch) {
632 case '!': case '*': case '\'': case '(': case ')': case ';':
633 case ':': case '@': case '&': case '=': case '+': case '$':
634 case ',': case '/': case '?': case '#': case '[': case ']':
635 return 1;
637 return 0;
640 static int is_rfc3986_unreserved(char ch)
642 return isalnum(ch) ||
643 ch == '-' || ch == '_' || ch == '.' || ch == '~';
646 static void strbuf_add_urlencode(struct strbuf *sb, const char *s, size_t len,
647 int reserved)
649 strbuf_grow(sb, len);
650 while (len--) {
651 char ch = *s++;
652 if (is_rfc3986_unreserved(ch) ||
653 (!reserved && is_rfc3986_reserved(ch)))
654 strbuf_addch(sb, ch);
655 else
656 strbuf_addf(sb, "%%%02x", ch);
660 void strbuf_addstr_urlencode(struct strbuf *sb, const char *s,
661 int reserved)
663 strbuf_add_urlencode(sb, s, strlen(s), reserved);
666 void strbuf_humanise_bytes(struct strbuf *buf, off_t bytes)
668 if (bytes > 1 << 30) {
669 strbuf_addf(buf, "%u.%2.2u GiB",
670 (int)(bytes >> 30),
671 (int)(bytes & ((1 << 30) - 1)) / 10737419);
672 } else if (bytes > 1 << 20) {
673 int x = bytes + 5243; /* for rounding */
674 strbuf_addf(buf, "%u.%2.2u MiB",
675 x >> 20, ((x & ((1 << 20) - 1)) * 100) >> 20);
676 } else if (bytes > 1 << 10) {
677 int x = bytes + 5; /* for rounding */
678 strbuf_addf(buf, "%u.%2.2u KiB",
679 x >> 10, ((x & ((1 << 10) - 1)) * 100) >> 10);
680 } else {
681 strbuf_addf(buf, "%u bytes", (int)bytes);
685 void strbuf_add_absolute_path(struct strbuf *sb, const char *path)
687 if (!*path)
688 die("The empty string is not a valid path");
689 if (!is_absolute_path(path)) {
690 struct stat cwd_stat, pwd_stat;
691 size_t orig_len = sb->len;
692 char *cwd = xgetcwd();
693 char *pwd = getenv("PWD");
694 if (pwd && strcmp(pwd, cwd) &&
695 !stat(cwd, &cwd_stat) &&
696 (cwd_stat.st_dev || cwd_stat.st_ino) &&
697 !stat(pwd, &pwd_stat) &&
698 pwd_stat.st_dev == cwd_stat.st_dev &&
699 pwd_stat.st_ino == cwd_stat.st_ino)
700 strbuf_addstr(sb, pwd);
701 else
702 strbuf_addstr(sb, cwd);
703 if (sb->len > orig_len && !is_dir_sep(sb->buf[sb->len - 1]))
704 strbuf_addch(sb, '/');
705 free(cwd);
707 strbuf_addstr(sb, path);
710 int printf_ln(const char *fmt, ...)
712 int ret;
713 va_list ap;
714 va_start(ap, fmt);
715 ret = vprintf(fmt, ap);
716 va_end(ap);
717 if (ret < 0 || putchar('\n') == EOF)
718 return -1;
719 return ret + 1;
722 int fprintf_ln(FILE *fp, const char *fmt, ...)
724 int ret;
725 va_list ap;
726 va_start(ap, fmt);
727 ret = vfprintf(fp, fmt, ap);
728 va_end(ap);
729 if (ret < 0 || putc('\n', fp) == EOF)
730 return -1;
731 return ret + 1;
734 char *xstrdup_tolower(const char *string)
736 char *result;
737 size_t len, i;
739 len = strlen(string);
740 result = xmallocz(len);
741 for (i = 0; i < len; i++)
742 result[i] = tolower(string[i]);
743 result[i] = '\0';
744 return result;
747 char *xstrvfmt(const char *fmt, va_list ap)
749 struct strbuf buf = STRBUF_INIT;
750 strbuf_vaddf(&buf, fmt, ap);
751 return strbuf_detach(&buf, NULL);
754 char *xstrfmt(const char *fmt, ...)
756 va_list ap;
757 char *ret;
759 va_start(ap, fmt);
760 ret = xstrvfmt(fmt, ap);
761 va_end(ap);
763 return ret;
766 void strbuf_addftime(struct strbuf *sb, const char *fmt, const struct tm *tm)
768 size_t hint = 128;
769 size_t len;
771 if (!*fmt)
772 return;
774 strbuf_grow(sb, hint);
775 len = strftime(sb->buf + sb->len, sb->alloc - sb->len, fmt, tm);
777 if (!len) {
779 * strftime reports "0" if it could not fit the result in the buffer.
780 * Unfortunately, it also reports "0" if the requested time string
781 * takes 0 bytes. So our strategy is to munge the format so that the
782 * output contains at least one character, and then drop the extra
783 * character before returning.
785 struct strbuf munged_fmt = STRBUF_INIT;
786 strbuf_addf(&munged_fmt, "%s ", fmt);
787 while (!len) {
788 hint *= 2;
789 strbuf_grow(sb, hint);
790 len = strftime(sb->buf + sb->len, sb->alloc - sb->len,
791 munged_fmt.buf, tm);
793 strbuf_release(&munged_fmt);
794 len--; /* drop munged space */
796 strbuf_setlen(sb, sb->len + len);
799 void strbuf_add_unique_abbrev(struct strbuf *sb, const unsigned char *sha1,
800 int abbrev_len)
802 int r;
803 strbuf_grow(sb, GIT_SHA1_HEXSZ + 1);
804 r = find_unique_abbrev_r(sb->buf + sb->len, sha1, abbrev_len);
805 strbuf_setlen(sb, sb->len + r);
809 * Returns the length of a line, without trailing spaces.
811 * If the line ends with newline, it will be removed too.
813 static size_t cleanup(char *line, size_t len)
815 while (len) {
816 unsigned char c = line[len - 1];
817 if (!isspace(c))
818 break;
819 len--;
822 return len;
826 * Remove empty lines from the beginning and end
827 * and also trailing spaces from every line.
829 * Turn multiple consecutive empty lines between paragraphs
830 * into just one empty line.
832 * If the input has only empty lines and spaces,
833 * no output will be produced.
835 * If last line does not have a newline at the end, one is added.
837 * Enable skip_comments to skip every line starting with comment
838 * character.
840 void strbuf_stripspace(struct strbuf *sb, int skip_comments)
842 int empties = 0;
843 size_t i, j, len, newlen;
844 char *eol;
846 /* We may have to add a newline. */
847 strbuf_grow(sb, 1);
849 for (i = j = 0; i < sb->len; i += len, j += newlen) {
850 eol = memchr(sb->buf + i, '\n', sb->len - i);
851 len = eol ? eol - (sb->buf + i) + 1 : sb->len - i;
853 if (skip_comments && len && sb->buf[i] == comment_line_char) {
854 newlen = 0;
855 continue;
857 newlen = cleanup(sb->buf + i, len);
859 /* Not just an empty line? */
860 if (newlen) {
861 if (empties > 0 && j > 0)
862 sb->buf[j++] = '\n';
863 empties = 0;
864 memmove(sb->buf + j, sb->buf + i, newlen);
865 sb->buf[newlen + j++] = '\n';
866 } else {
867 empties++;
871 strbuf_setlen(sb, j);
874 int strbuf_normalize_path(struct strbuf *src)
876 struct strbuf dst = STRBUF_INIT;
878 strbuf_grow(&dst, src->len);
879 if (normalize_path_copy(dst.buf, src->buf) < 0) {
880 strbuf_release(&dst);
881 return -1;
885 * normalize_path does not tell us the new length, so we have to
886 * compute it by looking for the new NUL it placed
888 strbuf_setlen(&dst, strlen(dst.buf));
889 strbuf_swap(src, &dst);
890 strbuf_release(&dst);
891 return 0;