1 #include "git-compat-util.h"
4 #include "environment.h"
7 #include "object-name.h"
9 #include "repository.h"
10 #include "string-list.h"
15 int starts_with(const char *str
, const char *prefix
)
17 for (; ; str
++, prefix
++)
20 else if (*str
!= *prefix
)
24 int istarts_with(const char *str
, const char *prefix
)
26 for (; ; str
++, prefix
++)
29 else if (tolower(*str
) != tolower(*prefix
))
33 int skip_to_optional_arg_default(const char *str
, const char *prefix
,
34 const char **arg
, const char *def
)
38 if (!skip_prefix(str
, prefix
, &p
))
56 * Used as the default ->buf value, so that people can always assume
57 * buf is non NULL and ->buf is NUL terminated even for a freshly
60 char strbuf_slopbuf
[1];
62 void strbuf_init(struct strbuf
*sb
, size_t hint
)
64 struct strbuf blank
= STRBUF_INIT
;
65 memcpy(sb
, &blank
, sizeof(*sb
));
67 strbuf_grow(sb
, hint
);
70 void strbuf_release(struct strbuf
*sb
)
78 char *strbuf_detach(struct strbuf
*sb
, size_t *sz
)
89 void strbuf_attach(struct strbuf
*sb
, void *buf
, size_t len
, size_t alloc
)
96 sb
->buf
[sb
->len
] = '\0';
99 void strbuf_grow(struct strbuf
*sb
, size_t extra
)
101 int new_buf
= !sb
->alloc
;
102 if (unsigned_add_overflows(extra
, 1) ||
103 unsigned_add_overflows(sb
->len
, extra
+ 1))
104 die("you want to use way too much memory");
107 ALLOC_GROW(sb
->buf
, sb
->len
+ extra
+ 1, sb
->alloc
);
112 void strbuf_trim(struct strbuf
*sb
)
118 void strbuf_rtrim(struct strbuf
*sb
)
120 while (sb
->len
> 0 && isspace((unsigned char)sb
->buf
[sb
->len
- 1]))
122 sb
->buf
[sb
->len
] = '\0';
125 void strbuf_trim_trailing_dir_sep(struct strbuf
*sb
)
127 while (sb
->len
> 0 && is_dir_sep((unsigned char)sb
->buf
[sb
->len
- 1]))
129 sb
->buf
[sb
->len
] = '\0';
132 void strbuf_trim_trailing_newline(struct strbuf
*sb
)
134 if (sb
->len
> 0 && sb
->buf
[sb
->len
- 1] == '\n') {
135 if (--sb
->len
> 0 && sb
->buf
[sb
->len
- 1] == '\r')
137 sb
->buf
[sb
->len
] = '\0';
141 void strbuf_ltrim(struct strbuf
*sb
)
144 while (sb
->len
> 0 && isspace(*b
)) {
148 memmove(sb
->buf
, b
, sb
->len
);
149 sb
->buf
[sb
->len
] = '\0';
152 int strbuf_reencode(struct strbuf
*sb
, const char *from
, const char *to
)
157 if (same_encoding(from
, to
))
160 out
= reencode_string_len(sb
->buf
, sb
->len
, to
, from
, &len
);
164 strbuf_attach(sb
, out
, len
, len
);
168 void strbuf_tolower(struct strbuf
*sb
)
170 char *p
= sb
->buf
, *end
= sb
->buf
+ sb
->len
;
175 struct strbuf
**strbuf_split_buf(const char *str
, size_t slen
,
176 int terminator
, int max
)
178 struct strbuf
**ret
= NULL
;
179 size_t nr
= 0, alloc
= 0;
184 if (max
<= 0 || nr
+ 1 < max
) {
185 const char *end
= memchr(str
, terminator
, slen
);
189 t
= xmalloc(sizeof(struct strbuf
));
191 strbuf_add(t
, str
, len
);
192 ALLOC_GROW(ret
, nr
+ 2, alloc
);
197 ALLOC_GROW(ret
, nr
+ 1, alloc
); /* In case string was empty */
202 void strbuf_add_separated_string_list(struct strbuf
*str
,
204 struct string_list
*slist
)
206 struct string_list_item
*item
;
209 for_each_string_list_item(item
, slist
) {
211 strbuf_addstr(str
, sep
);
212 strbuf_addstr(str
, item
->string
);
217 void strbuf_list_free(struct strbuf
**sbs
)
219 struct strbuf
**s
= sbs
;
230 int strbuf_cmp(const struct strbuf
*a
, const struct strbuf
*b
)
232 size_t len
= a
->len
< b
->len
? a
->len
: b
->len
;
233 int cmp
= memcmp(a
->buf
, b
->buf
, len
);
236 return a
->len
< b
->len
? -1: a
->len
!= b
->len
;
239 void strbuf_splice(struct strbuf
*sb
, size_t pos
, size_t len
,
240 const void *data
, size_t dlen
)
242 if (unsigned_add_overflows(pos
, len
))
243 die("you want to use way too much memory");
245 die("`pos' is too far after the end of the buffer");
246 if (pos
+ len
> sb
->len
)
247 die("`pos + len' is too far after the end of the buffer");
250 strbuf_grow(sb
, dlen
- len
);
251 memmove(sb
->buf
+ pos
+ dlen
,
253 sb
->len
- pos
- len
);
254 memcpy(sb
->buf
+ pos
, data
, dlen
);
255 strbuf_setlen(sb
, sb
->len
+ dlen
- len
);
258 void strbuf_insert(struct strbuf
*sb
, size_t pos
, const void *data
, size_t len
)
260 strbuf_splice(sb
, pos
, 0, data
, len
);
263 void strbuf_vinsertf(struct strbuf
*sb
, size_t pos
, const char *fmt
, va_list ap
)
270 die("`pos' is too far after the end of the buffer");
272 len
= vsnprintf(sb
->buf
+ sb
->len
, 0, fmt
, cp
);
275 BUG("your vsnprintf is broken (returned %d)", len
);
277 return; /* nothing to do */
278 if (unsigned_add_overflows(sb
->len
, len
))
279 die("you want to use way too much memory");
280 strbuf_grow(sb
, len
);
281 memmove(sb
->buf
+ pos
+ len
, sb
->buf
+ pos
, sb
->len
- pos
);
282 /* vsnprintf() will append a NUL, overwriting one of our characters */
283 save
= sb
->buf
[pos
+ len
];
284 len2
= vsnprintf(sb
->buf
+ pos
, len
+ 1, fmt
, ap
);
285 sb
->buf
[pos
+ len
] = save
;
287 BUG("your vsnprintf is broken (returns inconsistent lengths)");
288 strbuf_setlen(sb
, sb
->len
+ len
);
291 void strbuf_insertf(struct strbuf
*sb
, size_t pos
, const char *fmt
, ...)
295 strbuf_vinsertf(sb
, pos
, fmt
, ap
);
299 void strbuf_remove(struct strbuf
*sb
, size_t pos
, size_t len
)
301 strbuf_splice(sb
, pos
, len
, "", 0);
304 void strbuf_add(struct strbuf
*sb
, const void *data
, size_t len
)
306 strbuf_grow(sb
, len
);
307 memcpy(sb
->buf
+ sb
->len
, data
, len
);
308 strbuf_setlen(sb
, sb
->len
+ len
);
311 void strbuf_addbuf(struct strbuf
*sb
, const struct strbuf
*sb2
)
313 strbuf_grow(sb
, sb2
->len
);
314 memcpy(sb
->buf
+ sb
->len
, sb2
->buf
, sb2
->len
);
315 strbuf_setlen(sb
, sb
->len
+ sb2
->len
);
318 const char *strbuf_join_argv(struct strbuf
*buf
,
319 int argc
, const char **argv
, char delim
)
324 strbuf_addstr(buf
, *argv
);
326 strbuf_addch(buf
, delim
);
327 strbuf_addstr(buf
, *(++argv
));
333 void strbuf_addchars(struct strbuf
*sb
, int c
, size_t n
)
336 memset(sb
->buf
+ sb
->len
, c
, n
);
337 strbuf_setlen(sb
, sb
->len
+ n
);
340 void strbuf_addf(struct strbuf
*sb
, const char *fmt
, ...)
344 strbuf_vaddf(sb
, fmt
, ap
);
348 static void add_lines(struct strbuf
*out
,
351 const char *buf
, size_t size
)
355 const char *next
= memchr(buf
, '\n', size
);
356 next
= next
? (next
+ 1) : (buf
+ size
);
358 prefix
= ((prefix2
&& (buf
[0] == '\n' || buf
[0] == '\t'))
359 ? prefix2
: prefix1
);
360 strbuf_addstr(out
, prefix
);
361 strbuf_add(out
, buf
, next
- buf
);
365 strbuf_complete_line(out
);
368 void strbuf_add_commented_lines(struct strbuf
*out
, const char *buf
, size_t size
)
370 static char prefix1
[3];
371 static char prefix2
[2];
373 if (prefix1
[0] != comment_line_char
) {
374 xsnprintf(prefix1
, sizeof(prefix1
), "%c ", comment_line_char
);
375 xsnprintf(prefix2
, sizeof(prefix2
), "%c", comment_line_char
);
377 add_lines(out
, prefix1
, prefix2
, buf
, size
);
380 void strbuf_commented_addf(struct strbuf
*sb
, const char *fmt
, ...)
383 struct strbuf buf
= STRBUF_INIT
;
384 int incomplete_line
= sb
->len
&& sb
->buf
[sb
->len
- 1] != '\n';
386 va_start(params
, fmt
);
387 strbuf_vaddf(&buf
, fmt
, params
);
390 strbuf_add_commented_lines(sb
, buf
.buf
, buf
.len
);
392 sb
->buf
[--sb
->len
] = '\0';
394 strbuf_release(&buf
);
397 void strbuf_vaddf(struct strbuf
*sb
, const char *fmt
, va_list ap
)
402 if (!strbuf_avail(sb
))
405 len
= vsnprintf(sb
->buf
+ sb
->len
, sb
->alloc
- sb
->len
, fmt
, cp
);
408 BUG("your vsnprintf is broken (returned %d)", len
);
409 if (len
> strbuf_avail(sb
)) {
410 strbuf_grow(sb
, len
);
411 len
= vsnprintf(sb
->buf
+ sb
->len
, sb
->alloc
- sb
->len
, fmt
, ap
);
412 if (len
> strbuf_avail(sb
))
413 BUG("your vsnprintf is broken (insatiable)");
415 strbuf_setlen(sb
, sb
->len
+ len
);
418 int strbuf_expand_step(struct strbuf
*sb
, const char **formatp
)
420 const char *format
= *formatp
;
421 const char *percent
= strchrnul(format
, '%');
423 strbuf_add(sb
, format
, percent
- format
);
426 *formatp
= percent
+ 1;
430 size_t strbuf_expand_literal_cb(struct strbuf
*sb
,
431 const char *placeholder
,
432 void *context UNUSED
)
436 switch (placeholder
[0]) {
437 case 'n': /* newline */
438 strbuf_addch(sb
, '\n');
441 /* %x00 == NUL, %x0a == LF, etc. */
442 ch
= hex2chr(placeholder
+ 1);
445 strbuf_addch(sb
, ch
);
451 void strbuf_addbuf_percentquote(struct strbuf
*dst
, const struct strbuf
*src
)
453 size_t i
, len
= src
->len
;
455 for (i
= 0; i
< len
; i
++) {
456 if (src
->buf
[i
] == '%')
457 strbuf_addch(dst
, '%');
458 strbuf_addch(dst
, src
->buf
[i
]);
462 #define URL_UNSAFE_CHARS " <>\"%{}|\\^`:?#[]@!$&'()*+,;="
464 void strbuf_add_percentencode(struct strbuf
*dst
, const char *src
, int flags
)
466 size_t i
, len
= strlen(src
);
468 for (i
= 0; i
< len
; i
++) {
469 unsigned char ch
= src
[i
];
470 if (ch
<= 0x1F || ch
>= 0x7F ||
471 (ch
== '/' && (flags
& STRBUF_ENCODE_SLASH
)) ||
472 strchr(URL_UNSAFE_CHARS
, ch
))
473 strbuf_addf(dst
, "%%%02X", (unsigned char)ch
);
475 strbuf_addch(dst
, ch
);
479 size_t strbuf_fread(struct strbuf
*sb
, size_t size
, FILE *f
)
482 size_t oldalloc
= sb
->alloc
;
484 strbuf_grow(sb
, size
);
485 res
= fread(sb
->buf
+ sb
->len
, 1, size
, f
);
487 strbuf_setlen(sb
, sb
->len
+ res
);
488 else if (oldalloc
== 0)
493 ssize_t
strbuf_read(struct strbuf
*sb
, int fd
, size_t hint
)
495 size_t oldlen
= sb
->len
;
496 size_t oldalloc
= sb
->alloc
;
498 strbuf_grow(sb
, hint
? hint
: 8192);
500 ssize_t want
= sb
->alloc
- sb
->len
- 1;
501 ssize_t got
= read_in_full(fd
, sb
->buf
+ sb
->len
, want
);
507 strbuf_setlen(sb
, oldlen
);
513 strbuf_grow(sb
, 8192);
516 sb
->buf
[sb
->len
] = '\0';
517 return sb
->len
- oldlen
;
520 ssize_t
strbuf_read_once(struct strbuf
*sb
, int fd
, size_t hint
)
522 size_t oldalloc
= sb
->alloc
;
525 strbuf_grow(sb
, hint
? hint
: 8192);
526 cnt
= xread(fd
, sb
->buf
+ sb
->len
, sb
->alloc
- sb
->len
- 1);
528 strbuf_setlen(sb
, sb
->len
+ cnt
);
529 else if (oldalloc
== 0)
534 ssize_t
strbuf_write(struct strbuf
*sb
, FILE *f
)
536 return sb
->len
? fwrite(sb
->buf
, 1, sb
->len
, f
) : 0;
539 #define STRBUF_MAXLINK (2*PATH_MAX)
541 int strbuf_readlink(struct strbuf
*sb
, const char *path
, size_t hint
)
543 size_t oldalloc
= sb
->alloc
;
548 while (hint
< STRBUF_MAXLINK
) {
551 strbuf_grow(sb
, hint
);
552 len
= readlink(path
, sb
->buf
, hint
);
556 } else if (len
< hint
) {
557 strbuf_setlen(sb
, len
);
561 /* .. the buffer was too small - try again */
569 int strbuf_getcwd(struct strbuf
*sb
)
571 size_t oldalloc
= sb
->alloc
;
572 size_t guessed_len
= 128;
574 for (;; guessed_len
*= 2) {
575 strbuf_grow(sb
, guessed_len
);
576 if (getcwd(sb
->buf
, sb
->alloc
)) {
577 strbuf_setlen(sb
, strlen(sb
->buf
));
582 * If getcwd(3) is implemented as a syscall that falls
583 * back to a regular lookup using readdir(3) etc. then
584 * we may be able to avoid EACCES by providing enough
585 * space to the syscall as it's not necessarily bound
586 * to the same restrictions as the fallback.
588 if (errno
== EACCES
&& guessed_len
< PATH_MAX
)
602 int strbuf_getwholeline(struct strbuf
*sb
, FILE *fp
, int term
)
611 /* Translate slopbuf to NULL, as we cannot call realloc on it */
615 r
= getdelim(&sb
->buf
, &sb
->alloc
, term
, fp
);
624 * Normally we would have called xrealloc, which will try to free
625 * memory and recover. But we have no way to tell getdelim() to do so.
626 * Worse, we cannot try to recover ENOMEM ourselves, because we have
627 * no idea how many bytes were read by getdelim.
629 * Dying here is reasonable. It mirrors what xrealloc would do on
630 * catastrophic memory failure. We skip the opportunity to free pack
631 * memory and retry, but that's unlikely to help for a malloc small
632 * enough to hold a single line of input, anyway.
635 die("Out of memory, getdelim failed");
638 * Restore strbuf invariants; if getdelim left us with a NULL pointer,
639 * we can just re-init, but otherwise we should make sure that our
640 * length is empty, and that the result is NUL-terminated.
649 int strbuf_getwholeline(struct strbuf
*sb
, FILE *fp
, int term
)
658 while ((ch
= getc_unlocked(fp
)) != EOF
) {
659 if (!strbuf_avail(sb
))
661 sb
->buf
[sb
->len
++] = ch
;
666 if (ch
== EOF
&& sb
->len
== 0)
669 sb
->buf
[sb
->len
] = '\0';
674 int strbuf_appendwholeline(struct strbuf
*sb
, FILE *fp
, int term
)
676 struct strbuf line
= STRBUF_INIT
;
677 if (strbuf_getwholeline(&line
, fp
, term
))
679 strbuf_addbuf(sb
, &line
);
680 strbuf_release(&line
);
684 static int strbuf_getdelim(struct strbuf
*sb
, FILE *fp
, int term
)
686 if (strbuf_getwholeline(sb
, fp
, term
))
688 if (sb
->buf
[sb
->len
- 1] == term
)
689 strbuf_setlen(sb
, sb
->len
- 1);
693 int strbuf_getline(struct strbuf
*sb
, FILE *fp
)
695 if (strbuf_getwholeline(sb
, fp
, '\n'))
697 if (sb
->buf
[sb
->len
- 1] == '\n') {
698 strbuf_setlen(sb
, sb
->len
- 1);
699 if (sb
->len
&& sb
->buf
[sb
->len
- 1] == '\r')
700 strbuf_setlen(sb
, sb
->len
- 1);
705 int strbuf_getline_lf(struct strbuf
*sb
, FILE *fp
)
707 return strbuf_getdelim(sb
, fp
, '\n');
710 int strbuf_getline_nul(struct strbuf
*sb
, FILE *fp
)
712 return strbuf_getdelim(sb
, fp
, '\0');
715 int strbuf_getwholeline_fd(struct strbuf
*sb
, int fd
, int term
)
721 ssize_t len
= xread(fd
, &ch
, 1);
724 strbuf_addch(sb
, ch
);
731 ssize_t
strbuf_read_file(struct strbuf
*sb
, const char *path
, size_t hint
)
737 fd
= open(path
, O_RDONLY
);
740 len
= strbuf_read(sb
, fd
, hint
);
751 void strbuf_add_lines(struct strbuf
*out
, const char *prefix
,
752 const char *buf
, size_t size
)
754 add_lines(out
, prefix
, NULL
, buf
, size
);
757 void strbuf_addstr_xml_quoted(struct strbuf
*buf
, const char *s
)
760 size_t len
= strcspn(s
, "\"<>&");
761 strbuf_add(buf
, s
, len
);
765 strbuf_addstr(buf
, """);
768 strbuf_addstr(buf
, "<");
771 strbuf_addstr(buf
, ">");
774 strbuf_addstr(buf
, "&");
783 int is_rfc3986_reserved_or_unreserved(char ch
)
785 if (is_rfc3986_unreserved(ch
))
788 case '!': case '*': case '\'': case '(': case ')': case ';':
789 case ':': case '@': case '&': case '=': case '+': case '$':
790 case ',': case '/': case '?': case '#': case '[': case ']':
796 int is_rfc3986_unreserved(char ch
)
798 return isalnum(ch
) ||
799 ch
== '-' || ch
== '_' || ch
== '.' || ch
== '~';
802 static void strbuf_add_urlencode(struct strbuf
*sb
, const char *s
, size_t len
,
803 char_predicate allow_unencoded_fn
)
805 strbuf_grow(sb
, len
);
808 if (allow_unencoded_fn(ch
))
809 strbuf_addch(sb
, ch
);
811 strbuf_addf(sb
, "%%%02x", (unsigned char)ch
);
815 void strbuf_addstr_urlencode(struct strbuf
*sb
, const char *s
,
816 char_predicate allow_unencoded_fn
)
818 strbuf_add_urlencode(sb
, s
, strlen(s
), allow_unencoded_fn
);
821 static void strbuf_humanise(struct strbuf
*buf
, off_t bytes
,
824 if (bytes
> 1 << 30) {
827 /* TRANSLATORS: IEC 80000-13:2008 gibibyte */
829 /* TRANSLATORS: IEC 80000-13:2008 gibibyte/second */
831 (unsigned)(bytes
>> 30),
832 (unsigned)(bytes
& ((1 << 30) - 1)) / 10737419);
833 } else if (bytes
> 1 << 20) {
834 unsigned x
= bytes
+ 5243; /* for rounding */
837 /* TRANSLATORS: IEC 80000-13:2008 mebibyte */
839 /* TRANSLATORS: IEC 80000-13:2008 mebibyte/second */
841 x
>> 20, ((x
& ((1 << 20) - 1)) * 100) >> 20);
842 } else if (bytes
> 1 << 10) {
843 unsigned x
= bytes
+ 5; /* for rounding */
846 /* TRANSLATORS: IEC 80000-13:2008 kibibyte */
848 /* TRANSLATORS: IEC 80000-13:2008 kibibyte/second */
850 x
>> 10, ((x
& ((1 << 10) - 1)) * 100) >> 10);
854 /* TRANSLATORS: IEC 80000-13:2008 byte */
855 Q_("%u byte", "%u bytes", bytes
) :
856 /* TRANSLATORS: IEC 80000-13:2008 byte/second */
857 Q_("%u byte/s", "%u bytes/s", bytes
),
862 void strbuf_humanise_bytes(struct strbuf
*buf
, off_t bytes
)
864 strbuf_humanise(buf
, bytes
, 0);
867 void strbuf_humanise_rate(struct strbuf
*buf
, off_t bytes
)
869 strbuf_humanise(buf
, bytes
, 1);
872 void strbuf_add_absolute_path(struct strbuf
*sb
, const char *path
)
875 die("The empty string is not a valid path");
876 if (!is_absolute_path(path
)) {
877 struct stat cwd_stat
, pwd_stat
;
878 size_t orig_len
= sb
->len
;
879 char *cwd
= xgetcwd();
880 char *pwd
= getenv("PWD");
881 if (pwd
&& strcmp(pwd
, cwd
) &&
882 !stat(cwd
, &cwd_stat
) &&
883 (cwd_stat
.st_dev
|| cwd_stat
.st_ino
) &&
884 !stat(pwd
, &pwd_stat
) &&
885 pwd_stat
.st_dev
== cwd_stat
.st_dev
&&
886 pwd_stat
.st_ino
== cwd_stat
.st_ino
)
887 strbuf_addstr(sb
, pwd
);
889 strbuf_addstr(sb
, cwd
);
890 if (sb
->len
> orig_len
&& !is_dir_sep(sb
->buf
[sb
->len
- 1]))
891 strbuf_addch(sb
, '/');
894 strbuf_addstr(sb
, path
);
897 void strbuf_add_real_path(struct strbuf
*sb
, const char *path
)
900 struct strbuf resolved
= STRBUF_INIT
;
901 strbuf_realpath(&resolved
, path
, 1);
902 strbuf_addbuf(sb
, &resolved
);
903 strbuf_release(&resolved
);
905 strbuf_realpath(sb
, path
, 1);
908 int printf_ln(const char *fmt
, ...)
913 ret
= vprintf(fmt
, ap
);
915 if (ret
< 0 || putchar('\n') == EOF
)
920 int fprintf_ln(FILE *fp
, const char *fmt
, ...)
925 ret
= vfprintf(fp
, fmt
, ap
);
927 if (ret
< 0 || putc('\n', fp
) == EOF
)
932 char *xstrdup_tolower(const char *string
)
937 len
= strlen(string
);
938 result
= xmallocz(len
);
939 for (i
= 0; i
< len
; i
++)
940 result
[i
] = tolower(string
[i
]);
944 char *xstrdup_toupper(const char *string
)
949 len
= strlen(string
);
950 result
= xmallocz(len
);
951 for (i
= 0; i
< len
; i
++)
952 result
[i
] = toupper(string
[i
]);
956 char *xstrvfmt(const char *fmt
, va_list ap
)
958 struct strbuf buf
= STRBUF_INIT
;
959 strbuf_vaddf(&buf
, fmt
, ap
);
960 return strbuf_detach(&buf
, NULL
);
963 char *xstrfmt(const char *fmt
, ...)
969 ret
= xstrvfmt(fmt
, ap
);
975 void strbuf_addftime(struct strbuf
*sb
, const char *fmt
, const struct tm
*tm
,
976 int tz_offset
, int suppress_tz_name
)
978 struct strbuf munged_fmt
= STRBUF_INIT
;
986 * There is no portable way to pass timezone information to
987 * strftime, so we handle %z and %Z here. Likewise '%s', because
988 * going back to an epoch time requires knowing the zone.
990 * Note that tz_offset is in the "[-+]HHMM" decimal form; this is what
991 * we want for %z, but the computation for %s has to convert to number
994 while (strbuf_expand_step(&munged_fmt
, &fmt
)) {
997 strbuf_addstr(&munged_fmt
, "%%");
1001 strbuf_addf(&munged_fmt
, "%"PRItime
,
1002 (timestamp_t
)tm_to_time_t(tm
) -
1003 3600 * (tz_offset
/ 100) -
1004 60 * (tz_offset
% 100));
1008 strbuf_addf(&munged_fmt
, "%+05d", tz_offset
);
1012 if (suppress_tz_name
) {
1018 strbuf_addch(&munged_fmt
, '%');
1021 fmt
= munged_fmt
.buf
;
1023 strbuf_grow(sb
, hint
);
1024 len
= strftime(sb
->buf
+ sb
->len
, sb
->alloc
- sb
->len
, fmt
, tm
);
1028 * strftime reports "0" if it could not fit the result in the buffer.
1029 * Unfortunately, it also reports "0" if the requested time string
1030 * takes 0 bytes. So our strategy is to munge the format so that the
1031 * output contains at least one character, and then drop the extra
1032 * character before returning.
1034 strbuf_addch(&munged_fmt
, ' ');
1037 strbuf_grow(sb
, hint
);
1038 len
= strftime(sb
->buf
+ sb
->len
, sb
->alloc
- sb
->len
,
1039 munged_fmt
.buf
, tm
);
1041 len
--; /* drop munged space */
1043 strbuf_release(&munged_fmt
);
1044 strbuf_setlen(sb
, sb
->len
+ len
);
1047 void strbuf_repo_add_unique_abbrev(struct strbuf
*sb
, struct repository
*repo
,
1048 const struct object_id
*oid
, int abbrev_len
)
1051 strbuf_grow(sb
, GIT_MAX_HEXSZ
+ 1);
1052 r
= repo_find_unique_abbrev_r(repo
, sb
->buf
+ sb
->len
, oid
, abbrev_len
);
1053 strbuf_setlen(sb
, sb
->len
+ r
);
1056 void strbuf_add_unique_abbrev(struct strbuf
*sb
, const struct object_id
*oid
,
1059 strbuf_repo_add_unique_abbrev(sb
, the_repository
, oid
, abbrev_len
);
1063 * Returns the length of a line, without trailing spaces.
1065 * If the line ends with newline, it will be removed too.
1067 static size_t cleanup(char *line
, size_t len
)
1070 unsigned char c
= line
[len
- 1];
1080 * Remove empty lines from the beginning and end
1081 * and also trailing spaces from every line.
1083 * Turn multiple consecutive empty lines between paragraphs
1084 * into just one empty line.
1086 * If the input has only empty lines and spaces,
1087 * no output will be produced.
1089 * If last line does not have a newline at the end, one is added.
1091 * Enable skip_comments to skip every line starting with comment
1094 void strbuf_stripspace(struct strbuf
*sb
, int skip_comments
)
1097 size_t i
, j
, len
, newlen
;
1100 /* We may have to add a newline. */
1103 for (i
= j
= 0; i
< sb
->len
; i
+= len
, j
+= newlen
) {
1104 eol
= memchr(sb
->buf
+ i
, '\n', sb
->len
- i
);
1105 len
= eol
? eol
- (sb
->buf
+ i
) + 1 : sb
->len
- i
;
1107 if (skip_comments
&& len
&& sb
->buf
[i
] == comment_line_char
) {
1111 newlen
= cleanup(sb
->buf
+ i
, len
);
1113 /* Not just an empty line? */
1115 if (empties
> 0 && j
> 0)
1116 sb
->buf
[j
++] = '\n';
1118 memmove(sb
->buf
+ j
, sb
->buf
+ i
, newlen
);
1119 sb
->buf
[newlen
+ j
++] = '\n';
1125 strbuf_setlen(sb
, j
);
1128 int strbuf_normalize_path(struct strbuf
*src
)
1130 struct strbuf dst
= STRBUF_INIT
;
1132 strbuf_grow(&dst
, src
->len
);
1133 if (normalize_path_copy(dst
.buf
, src
->buf
) < 0) {
1134 strbuf_release(&dst
);
1139 * normalize_path does not tell us the new length, so we have to
1140 * compute it by looking for the new NUL it placed
1142 strbuf_setlen(&dst
, strlen(dst
.buf
));
1143 strbuf_swap(src
, &dst
);
1144 strbuf_release(&dst
);
1148 void strbuf_strip_file_from_path(struct strbuf
*sb
)
1150 char *path_sep
= find_last_dir_sep(sb
->buf
);
1151 strbuf_setlen(sb
, path_sep
? path_sep
- sb
->buf
+ 1 : 0);