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chromium / external / github.com / git / git / refs/tags/v2.35.6 / . / strbuf.c
blob: 613fee8c82e0f1682e99b5facee338c5e14cd28a [file] [log] [blame]
Christopher Li812666c2005-04-26 19:00:58[diff] [blame]1#include "cache.h"
Junio C Hamanoa2fab532009-03-21 21:35:51[diff] [blame]2#include "refs.h"
Elijah Newrenf6f77552018-04-19 17:58:08[diff] [blame]3#include "string-list.h"
Jeff Kingd4241f52014-05-22 09:30:14[diff] [blame]4#include "utf8.h"
Junio C Hamanod1df5742005-04-26 01:26:45[diff] [blame]5
Christian Couder95662312013-12-01 07:49:16[diff] [blame]6int starts_with(const char *str, const char *prefix)
7{
8 for (; ; str++, prefix++)
9 if (!*prefix)
10 return 1;
11 else if (*str != *prefix)
12 return 0;
13}
14
Lars Schneider66b8af32018-03-09 17:35:29[diff] [blame]15int istarts_with(const char *str, const char *prefix)
16{
17 for (; ; str++, prefix++)
18 if (!*prefix)
19 return 1;
20 else if (tolower(*str) != tolower(*prefix))
21 return 0;
22}
23
Christian Couderafaef552017-12-09 20:40:07[diff] [blame]24int skip_to_optional_arg_default(const char *str, const char *prefix,
25 const char **arg, const char *def)
26{
27 const char *p;
28
29 if (!skip_prefix(str, prefix, &p))
30 return 0;
31
32 if (!*p) {
33 if (arg)
34 *arg = def;
35 return 1;
36 }
37
38 if (*p != '=')
39 return 0;
40
41 if (arg)
42 *arg = p + 1;
43 return 1;
44}
45
Pierre Habouzitb315c5c2007-09-27 10:58:23[diff] [blame]46/*
47 * Used as the default ->buf value, so that people can always assume
48 * buf is non NULL and ->buf is NUL terminated even for a freshly
49 * initialized strbuf.
50 */
51char strbuf_slopbuf[1];
52
Pierre Habouzit917c9a72007-09-15 13:56:50[diff] [blame]53void strbuf_init(struct strbuf *sb, size_t hint)
54{
Ævar Arnfjörð Bjarmason5726a6b2021-07-01 10:51:26[diff] [blame]55 struct strbuf blank = STRBUF_INIT;
56 memcpy(sb, &blank, sizeof(*sb));
Thomas Rast8c74ef12011-08-29 21:16:12[diff] [blame]57 if (hint)
Pierre Habouzitf1696ee2007-09-10 10:35:04[diff] [blame]58 strbuf_grow(sb, hint);
Junio C Hamanod1df5742005-04-26 01:26:45[diff] [blame]59}
60
Pierre Habouzit917c9a72007-09-15 13:56:50[diff] [blame]61void strbuf_release(struct strbuf *sb)
62{
Pierre Habouzitb315c5c2007-09-27 10:58:23[diff] [blame]63 if (sb->alloc) {
64 free(sb->buf);
65 strbuf_init(sb, 0);
66 }
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]67}
68
Pierre Habouzitb315c5c2007-09-27 10:58:23[diff] [blame]69char *strbuf_detach(struct strbuf *sb, size_t *sz)
Pierre Habouzit917c9a72007-09-15 13:56:50[diff] [blame]70{
Jeff King08ad56f2012-10-18 10:00:12[diff] [blame]71 char *res;
72 strbuf_grow(sb, 0);
73 res = sb->buf;
Pierre Habouzitb315c5c2007-09-27 10:58:23[diff] [blame]74 if (sz)
75 *sz = sb->len;
Pierre Habouzitf1696ee2007-09-10 10:35:04[diff] [blame]76 strbuf_init(sb, 0);
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]77 return res;
Junio C Hamanod1df5742005-04-26 01:26:45[diff] [blame]78}
79
Pierre Habouzit917c9a72007-09-15 13:56:50[diff] [blame]80void strbuf_attach(struct strbuf *sb, void *buf, size_t len, size_t alloc)
81{
82 strbuf_release(sb);
83 sb->buf = buf;
84 sb->len = len;
85 sb->alloc = alloc;
86 strbuf_grow(sb, 0);
87 sb->buf[sb->len] = '\0';
88}
89
90void strbuf_grow(struct strbuf *sb, size_t extra)
91{
Thomas Rast8c74ef12011-08-29 21:16:12[diff] [blame]92 int new_buf = !sb->alloc;
Jonathan Nieder1368f652010-10-11 02:59:26[diff] [blame]93 if (unsigned_add_overflows(extra, 1) ||
94 unsigned_add_overflows(sb->len, extra + 1))
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]95 die("you want to use way too much memory");
Thomas Rast8c74ef12011-08-29 21:16:12[diff] [blame]96 if (new_buf)
Pierre Habouzitb315c5c2007-09-27 10:58:23[diff] [blame]97 sb->buf = NULL;
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]98 ALLOC_GROW(sb->buf, sb->len + extra + 1, sb->alloc);
Thomas Rast8c74ef12011-08-29 21:16:12[diff] [blame]99 if (new_buf)
100 sb->buf[0] = '\0';
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]101}
102
Lukas Sandströmeacd6dc2008-07-13 18:29:18[diff] [blame]103void strbuf_trim(struct strbuf *sb)
104{
Brian Gesiak3bb55e82014-04-30 08:58:06[diff] [blame]105 strbuf_rtrim(sb);
106 strbuf_ltrim(sb);
Lukas Sandströmeacd6dc2008-07-13 18:29:18[diff] [blame]107}
Nguyễn Thái Ngọc Duyc64a8d22018-02-12 09:49:37[diff] [blame]108
Pierre Habouzitf1696ee2007-09-10 10:35:04[diff] [blame]109void strbuf_rtrim(struct strbuf *sb)
110{
111 while (sb->len > 0 && isspace((unsigned char)sb->buf[sb->len - 1]))
112 sb->len--;
113 sb->buf[sb->len] = '\0';
114}
115
Nguyễn Thái Ngọc Duyc64a8d22018-02-12 09:49:37[diff] [blame]116void strbuf_trim_trailing_dir_sep(struct strbuf *sb)
117{
118 while (sb->len > 0 && is_dir_sep((unsigned char)sb->buf[sb->len - 1]))
119 sb->len--;
120 sb->buf[sb->len] = '\0';
121}
122
Pratik Karkif9573622018-08-08 15:06:16[diff] [blame]123void strbuf_trim_trailing_newline(struct strbuf *sb)
124{
125 if (sb->len > 0 && sb->buf[sb->len - 1] == '\n') {
126 if (--sb->len > 0 && sb->buf[sb->len - 1] == '\r')
127 --sb->len;
128 sb->buf[sb->len] = '\0';
129 }
130}
131
Lukas Sandströmeacd6dc2008-07-13 18:29:18[diff] [blame]132void strbuf_ltrim(struct strbuf *sb)
133{
134 char *b = sb->buf;
135 while (sb->len > 0 && isspace(*b)) {
136 b++;
137 sb->len--;
138 }
139 memmove(sb->buf, b, sb->len);
140 sb->buf[sb->len] = '\0';
141}
142
Jeff Kingd4241f52014-05-22 09:30:14[diff] [blame]143int strbuf_reencode(struct strbuf *sb, const char *from, const char *to)
144{
145 char *out;
Jeff Kingc7d017d2018-07-24 10:50:33[diff] [blame]146 size_t len;
Jeff Kingd4241f52014-05-22 09:30:14[diff] [blame]147
148 if (same_encoding(from, to))
149 return 0;
150
151 out = reencode_string_len(sb->buf, sb->len, to, from, &len);
152 if (!out)
153 return -1;
154
155 strbuf_attach(sb, out, len, len);
156 return 0;
157}
158
Jeff Kingffb20ce2014-05-23 20:03:47[diff] [blame]159void strbuf_tolower(struct strbuf *sb)
160{
161 char *p = sb->buf, *end = sb->buf + sb->len;
162 for (; p < end; p++)
163 *p = tolower(*p);
164}
165
Michael Haggerty17b73dc2012-11-04 06:46:53[diff] [blame]166struct strbuf **strbuf_split_buf(const char *str, size_t slen,
167 int terminator, int max)
Lukas Sandströmeacd6dc2008-07-13 18:29:18[diff] [blame]168{
Michael Haggertyb8c2c1f2012-11-04 06:46:51[diff] [blame]169 struct strbuf **ret = NULL;
170 size_t nr = 0, alloc = 0;
Lukas Sandströmeacd6dc2008-07-13 18:29:18[diff] [blame]171 struct strbuf *t;
172
Michael Haggerty1173bb32012-11-04 06:46:52[diff] [blame]173 while (slen) {
174 int len = slen;
175 if (max <= 0 || nr + 1 < max) {
Michael Haggerty17b73dc2012-11-04 06:46:53[diff] [blame]176 const char *end = memchr(str, terminator, slen);
Michael Haggerty1173bb32012-11-04 06:46:52[diff] [blame]177 if (end)
178 len = end - str + 1;
179 }
Lukas Sandströmeacd6dc2008-07-13 18:29:18[diff] [blame]180 t = xmalloc(sizeof(struct strbuf));
181 strbuf_init(t, len);
Michael Haggerty1173bb32012-11-04 06:46:52[diff] [blame]182 strbuf_add(t, str, len);
Michael Haggertyb8c2c1f2012-11-04 06:46:51[diff] [blame]183 ALLOC_GROW(ret, nr + 2, alloc);
184 ret[nr++] = t;
Michael Haggerty1173bb32012-11-04 06:46:52[diff] [blame]185 str += len;
186 slen -= len;
Lukas Sandströmeacd6dc2008-07-13 18:29:18[diff] [blame]187 }
Michael Haggertyb8c2c1f2012-11-04 06:46:51[diff] [blame]188 ALLOC_GROW(ret, nr + 1, alloc); /* In case string was empty */
189 ret[nr] = NULL;
Lukas Sandströmeacd6dc2008-07-13 18:29:18[diff] [blame]190 return ret;
191}
192
Elijah Newrenf6f77552018-04-19 17:58:08[diff] [blame]193void strbuf_add_separated_string_list(struct strbuf *str,
194 const char *sep,
195 struct string_list *slist)
196{
197 struct string_list_item *item;
198 int sep_needed = 0;
199
200 for_each_string_list_item(item, slist) {
201 if (sep_needed)
202 strbuf_addstr(str, sep);
203 strbuf_addstr(str, item->string);
204 sep_needed = 1;
205 }
206}
207
Lukas Sandströmeacd6dc2008-07-13 18:29:18[diff] [blame]208void strbuf_list_free(struct strbuf **sbs)
209{
210 struct strbuf **s = sbs;
211
Andrzej Huntf3a96802021-04-25 14:16:16[diff] [blame]212 if (!s)
213 return;
Lukas Sandströmeacd6dc2008-07-13 18:29:18[diff] [blame]214 while (*s) {
215 strbuf_release(*s);
216 free(*s++);
217 }
218 free(sbs);
219}
220
Lukas Sandström9b200fd2008-07-13 18:28:24[diff] [blame]221int strbuf_cmp(const struct strbuf *a, const struct strbuf *b)
Pierre Habouzit45f66f62007-09-24 09:25:03[diff] [blame]222{
Jeff King26114c02018-07-24 10:51:08[diff] [blame]223 size_t len = a->len < b->len ? a->len: b->len;
Alex Riesen8f024652009-03-19 22:27:32[diff] [blame]224 int cmp = memcmp(a->buf, b->buf, len);
225 if (cmp)
226 return cmp;
227 return a->len < b->len ? -1: a->len != b->len;
Pierre Habouzit45f66f62007-09-24 09:25:03[diff] [blame]228}
229
Pierre Habouzit917c9a72007-09-15 13:56:50[diff] [blame]230void strbuf_splice(struct strbuf *sb, size_t pos, size_t len,
231 const void *data, size_t dlen)
232{
Jonathan Nieder1368f652010-10-11 02:59:26[diff] [blame]233 if (unsigned_add_overflows(pos, len))
Pierre Habouzit917c9a72007-09-15 13:56:50[diff] [blame]234 die("you want to use way too much memory");
235 if (pos > sb->len)
236 die("`pos' is too far after the end of the buffer");
237 if (pos + len > sb->len)
238 die("`pos + len' is too far after the end of the buffer");
239
240 if (dlen >= len)
241 strbuf_grow(sb, dlen - len);
242 memmove(sb->buf + pos + dlen,
243 sb->buf + pos + len,
244 sb->len - pos - len);
245 memcpy(sb->buf + pos, data, dlen);
246 strbuf_setlen(sb, sb->len + dlen - len);
247}
248
Pierre Habouzitc76689d2007-09-19 22:42:12[diff] [blame]249void strbuf_insert(struct strbuf *sb, size_t pos, const void *data, size_t len)
250{
251 strbuf_splice(sb, pos, 0, data, len);
252}
253
Paul-Sebastian Ungureanu5ef264d2019-02-25 23:16:07[diff] [blame]254void strbuf_vinsertf(struct strbuf *sb, size_t pos, const char *fmt, va_list ap)
255{
256 int len, len2;
257 char save;
258 va_list cp;
259
260 if (pos > sb->len)
261 die("`pos' is too far after the end of the buffer");
262 va_copy(cp, ap);
263 len = vsnprintf(sb->buf + sb->len, 0, fmt, cp);
264 va_end(cp);
265 if (len < 0)
266 BUG("your vsnprintf is broken (returned %d)", len);
267 if (!len)
268 return; /* nothing to do */
269 if (unsigned_add_overflows(sb->len, len))
270 die("you want to use way too much memory");
271 strbuf_grow(sb, len);
272 memmove(sb->buf + pos + len, sb->buf + pos, sb->len - pos);
273 /* vsnprintf() will append a NUL, overwriting one of our characters */
274 save = sb->buf[pos + len];
275 len2 = vsnprintf(sb->buf + pos, len + 1, fmt, ap);
276 sb->buf[pos + len] = save;
277 if (len2 != len)
278 BUG("your vsnprintf is broken (returns inconsistent lengths)");
279 strbuf_setlen(sb, sb->len + len);
280}
281
282void strbuf_insertf(struct strbuf *sb, size_t pos, const char *fmt, ...)
283{
284 va_list ap;
285 va_start(ap, fmt);
286 strbuf_vinsertf(sb, pos, fmt, ap);
287 va_end(ap);
288}
289
Pierre Habouzitc76689d2007-09-19 22:42:12[diff] [blame]290void strbuf_remove(struct strbuf *sb, size_t pos, size_t len)
291{
René Scharfea8342a42016-09-13 16:40:22[diff] [blame]292 strbuf_splice(sb, pos, len, "", 0);
Pierre Habouzitc76689d2007-09-19 22:42:12[diff] [blame]293}
294
Pierre Habouzit917c9a72007-09-15 13:56:50[diff] [blame]295void strbuf_add(struct strbuf *sb, const void *data, size_t len)
296{
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]297 strbuf_grow(sb, len);
298 memcpy(sb->buf + sb->len, data, len);
299 strbuf_setlen(sb, sb->len + len);
300}
301
René Scharfe31471ba2016-07-21 16:46:44[diff] [blame]302void strbuf_addbuf(struct strbuf *sb, const struct strbuf *sb2)
303{
304 strbuf_grow(sb, sb2->len);
305 memcpy(sb->buf + sb->len, sb2->buf, sb2->len);
306 strbuf_setlen(sb, sb->len + sb2->len);
307}
308
Paul-Sebastian Ungureanue71c4a82019-02-25 23:16:06[diff] [blame]309const char *strbuf_join_argv(struct strbuf *buf,
310 int argc, const char **argv, char delim)
311{
312 if (!argc)
313 return buf->buf;
314
315 strbuf_addstr(buf, *argv);
316 while (--argc) {
317 strbuf_addch(buf, delim);
318 strbuf_addstr(buf, *(++argv));
319 }
320
321 return buf->buf;
322}
323
René Scharfed07235a2014-09-07 07:03:32[diff] [blame]324void strbuf_addchars(struct strbuf *sb, int c, size_t n)
325{
326 strbuf_grow(sb, n);
327 memset(sb->buf + sb->len, c, n);
328 strbuf_setlen(sb, sb->len + n);
329}
330
Pierre Habouzit917c9a72007-09-15 13:56:50[diff] [blame]331void strbuf_addf(struct strbuf *sb, const char *fmt, ...)
332{
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]333 va_list ap;
Jeff Kingebeb6092011-02-26 05:08:53[diff] [blame]334 va_start(ap, fmt);
335 strbuf_vaddf(sb, fmt, ap);
336 va_end(ap);
337}
338
Junio C Hamanoeff80a92013-01-16 19:18:48[diff] [blame]339static void add_lines(struct strbuf *out,
340 const char *prefix1,
341 const char *prefix2,
342 const char *buf, size_t size)
343{
344 while (size) {
345 const char *prefix;
346 const char *next = memchr(buf, '\n', size);
347 next = next ? (next + 1) : (buf + size);
348
Junio C Hamanod55aeb72014-10-27 21:13:15[diff] [blame]349 prefix = ((prefix2 && (buf[0] == '\n' || buf[0] == '\t'))
350 ? prefix2 : prefix1);
Junio C Hamanoeff80a92013-01-16 19:18:48[diff] [blame]351 strbuf_addstr(out, prefix);
352 strbuf_add(out, buf, next - buf);
353 size -= next - buf;
354 buf = next;
355 }
356 strbuf_complete_line(out);
357}
358
359void strbuf_add_commented_lines(struct strbuf *out, const char *buf, size_t size)
360{
361 static char prefix1[3];
362 static char prefix2[2];
363
364 if (prefix1[0] != comment_line_char) {
Jeff King5096d492015-09-24 21:06:08[diff] [blame]365 xsnprintf(prefix1, sizeof(prefix1), "%c ", comment_line_char);
366 xsnprintf(prefix2, sizeof(prefix2), "%c", comment_line_char);
Junio C Hamanoeff80a92013-01-16 19:18:48[diff] [blame]367 }
368 add_lines(out, prefix1, prefix2, buf, size);
369}
370
371void strbuf_commented_addf(struct strbuf *sb, const char *fmt, ...)
372{
373 va_list params;
374 struct strbuf buf = STRBUF_INIT;
375 int incomplete_line = sb->len && sb->buf[sb->len - 1] != '\n';
376
377 va_start(params, fmt);
378 strbuf_vaddf(&buf, fmt, params);
379 va_end(params);
380
381 strbuf_add_commented_lines(sb, buf.buf, buf.len);
382 if (incomplete_line)
383 sb->buf[--sb->len] = '\0';
384
385 strbuf_release(&buf);
386}
387
Jeff Kingebeb6092011-02-26 05:08:53[diff] [blame]388void strbuf_vaddf(struct strbuf *sb, const char *fmt, va_list ap)
389{
390 int len;
391 va_list cp;
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]392
Shawn O. Pearcef141bd82007-11-13 08:22:44[diff] [blame]393 if (!strbuf_avail(sb))
394 strbuf_grow(sb, 64);
Jeff Kingebeb6092011-02-26 05:08:53[diff] [blame]395 va_copy(cp, ap);
396 len = vsnprintf(sb->buf + sb->len, sb->alloc - sb->len, fmt, cp);
397 va_end(cp);
Shawn O. Pearcef141bd82007-11-13 08:22:44[diff] [blame]398 if (len < 0)
Johannes Schindelin033abf92018-05-02 09:38:39[diff] [blame]399 BUG("your vsnprintf is broken (returned %d)", len);
Pierre Habouzitf1696ee2007-09-10 10:35:04[diff] [blame]400 if (len > strbuf_avail(sb)) {
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]401 strbuf_grow(sb, len);
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]402 len = vsnprintf(sb->buf + sb->len, sb->alloc - sb->len, fmt, ap);
Jeff Kingebeb6092011-02-26 05:08:53[diff] [blame]403 if (len > strbuf_avail(sb))
Johannes Schindelin033abf92018-05-02 09:38:39[diff] [blame]404 BUG("your vsnprintf is broken (insatiable)");
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]405 }
406 strbuf_setlen(sb, sb->len + len);
Junio C Hamanod1df5742005-04-26 01:26:45[diff] [blame]407}
408
Marco Costalbac3a670d2008-02-09 14:40:19[diff] [blame]409void strbuf_expand(struct strbuf *sb, const char *format, expand_fn_t fn,
410 void *context)
René Scharfecde75e52007-11-09 00:49:42[diff] [blame]411{
412 for (;;) {
Marco Costalbac3a670d2008-02-09 14:40:19[diff] [blame]413 const char *percent;
414 size_t consumed;
René Scharfecde75e52007-11-09 00:49:42[diff] [blame]415
416 percent = strchrnul(format, '%');
417 strbuf_add(sb, format, percent - format);
418 if (!*percent)
419 break;
420 format = percent + 1;
421
Jeff King0a0416a2010-01-13 17:35:31[diff] [blame]422 if (*format == '%') {
423 strbuf_addch(sb, '%');
424 format++;
425 continue;
426 }
427
Marco Costalbac3a670d2008-02-09 14:40:19[diff] [blame]428 consumed = fn(sb, format, context);
429 if (consumed)
430 format += consumed;
431 else
René Scharfecde75e52007-11-09 00:49:42[diff] [blame]432 strbuf_addch(sb, '%');
433 }
434}
435
Anders Waldenborgfd2015b2019-01-28 21:33:36[diff] [blame]436size_t strbuf_expand_literal_cb(struct strbuf *sb,
437 const char *placeholder,
438 void *context)
439{
440 int ch;
441
442 switch (placeholder[0]) {
443 case 'n': /* newline */
444 strbuf_addch(sb, '\n');
445 return 1;
446 case 'x':
447 /* %x00 == NUL, %x0a == LF, etc. */
448 ch = hex2chr(placeholder + 1);
449 if (ch < 0)
450 return 0;
451 strbuf_addch(sb, ch);
452 return 3;
453 }
454 return 0;
455}
456
René Scharfe9b864e72008-11-22 23:09:30[diff] [blame]457size_t strbuf_expand_dict_cb(struct strbuf *sb, const char *placeholder,
458 void *context)
459{
460 struct strbuf_expand_dict_entry *e = context;
461 size_t len;
462
463 for (; e->placeholder && (len = strlen(e->placeholder)); e++) {
464 if (!strncmp(placeholder, e->placeholder, len)) {
465 if (e->value)
466 strbuf_addstr(sb, e->value);
467 return len;
468 }
469 }
470 return 0;
471}
472
Jeff King361df5d2010-01-13 17:36:42[diff] [blame]473void strbuf_addbuf_percentquote(struct strbuf *dst, const struct strbuf *src)
474{
Jeff King26114c02018-07-24 10:51:08[diff] [blame]475 size_t i, len = src->len;
Jeff King361df5d2010-01-13 17:36:42[diff] [blame]476
477 for (i = 0; i < len; i++) {
478 if (src->buf[i] == '%')
479 strbuf_addch(dst, '%');
480 strbuf_addch(dst, src->buf[i]);
481 }
482}
483
brian m. carlsonb44d0112020-04-27 01:18:08[diff] [blame]484#define URL_UNSAFE_CHARS " <>\"%{}|\\^`:?#[]@!$&'()*+,;="
brian m. carlson46fd7b32020-02-20 02:24:13[diff] [blame]485
brian m. carlsonb44d0112020-04-27 01:18:08[diff] [blame]486void strbuf_add_percentencode(struct strbuf *dst, const char *src, int flags)
brian m. carlson46fd7b32020-02-20 02:24:13[diff] [blame]487{
488 size_t i, len = strlen(src);
489
490 for (i = 0; i < len; i++) {
491 unsigned char ch = src[i];
brian m. carlsonb44d0112020-04-27 01:18:08[diff] [blame]492 if (ch <= 0x1F || ch >= 0x7F ||
493 (ch == '/' && (flags & STRBUF_ENCODE_SLASH)) ||
494 strchr(URL_UNSAFE_CHARS, ch))
brian m. carlson46fd7b32020-02-20 02:24:13[diff] [blame]495 strbuf_addf(dst, "%%%02X", (unsigned char)ch);
496 else
497 strbuf_addch(dst, ch);
498 }
499}
500
Pierre Habouzit917c9a72007-09-15 13:56:50[diff] [blame]501size_t strbuf_fread(struct strbuf *sb, size_t size, FILE *f)
502{
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]503 size_t res;
René Scharfe2fc64702009-01-06 20:41:14[diff] [blame]504 size_t oldalloc = sb->alloc;
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]505
506 strbuf_grow(sb, size);
507 res = fread(sb->buf + sb->len, 1, size, f);
René Scharfe2fc64702009-01-06 20:41:14[diff] [blame]508 if (res > 0)
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]509 strbuf_setlen(sb, sb->len + res);
Roel Kluin6651c3f2009-06-22 16:42:33[diff] [blame]510 else if (oldalloc == 0)
René Scharfe2fc64702009-01-06 20:41:14[diff] [blame]511 strbuf_release(sb);
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]512 return res;
513}
514
Pierre Habouzitf1696ee2007-09-10 10:35:04[diff] [blame]515ssize_t strbuf_read(struct strbuf *sb, int fd, size_t hint)
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]516{
517 size_t oldlen = sb->len;
René Scharfe2fc64702009-01-06 20:41:14[diff] [blame]518 size_t oldalloc = sb->alloc;
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]519
Pierre Habouzitf1696ee2007-09-10 10:35:04[diff] [blame]520 strbuf_grow(sb, hint ? hint : 8192);
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]521 for (;;) {
Jim Hill3ebbd002015-05-31 18:16:45[diff] [blame]522 ssize_t want = sb->alloc - sb->len - 1;
523 ssize_t got = read_in_full(fd, sb->buf + sb->len, want);
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]524
Jim Hill3ebbd002015-05-31 18:16:45[diff] [blame]525 if (got < 0) {
René Scharfe2fc64702009-01-06 20:41:14[diff] [blame]526 if (oldalloc == 0)
527 strbuf_release(sb);
528 else
529 strbuf_setlen(sb, oldlen);
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]530 return -1;
531 }
Jim Hill3ebbd002015-05-31 18:16:45[diff] [blame]532 sb->len += got;
533 if (got < want)
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]534 break;
Pierre Habouzitf1696ee2007-09-10 10:35:04[diff] [blame]535 strbuf_grow(sb, 8192);
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]536 }
537
538 sb->buf[sb->len] = '\0';
539 return sb->len - oldlen;
Junio C Hamanod1df5742005-04-26 01:26:45[diff] [blame]540}
541
Stefan Bellerb4e04fb2015-12-16 00:04:08[diff] [blame]542ssize_t strbuf_read_once(struct strbuf *sb, int fd, size_t hint)
543{
René Scharfec3ff8f62017-12-07 20:51:26[diff] [blame]544 size_t oldalloc = sb->alloc;
Stefan Bellerb4e04fb2015-12-16 00:04:08[diff] [blame]545 ssize_t cnt;
546
547 strbuf_grow(sb, hint ? hint : 8192);
548 cnt = xread(fd, sb->buf + sb->len, sb->alloc - sb->len - 1);
549 if (cnt > 0)
550 strbuf_setlen(sb, sb->len + cnt);
René Scharfec3ff8f62017-12-07 20:51:26[diff] [blame]551 else if (oldalloc == 0)
552 strbuf_release(sb);
Stefan Bellerb4e04fb2015-12-16 00:04:08[diff] [blame]553 return cnt;
554}
555
Stefan Beller2dac9b52016-03-01 02:07:15[diff] [blame]556ssize_t strbuf_write(struct strbuf *sb, FILE *f)
557{
558 return sb->len ? fwrite(sb->buf, 1, sb->len, f) : 0;
559}
560
Linus Torvaldsb11b7e12008-12-17 17:36:40[diff] [blame]561#define STRBUF_MAXLINK (2*PATH_MAX)
562
563int strbuf_readlink(struct strbuf *sb, const char *path, size_t hint)
564{
René Scharfe2fc64702009-01-06 20:41:14[diff] [blame]565 size_t oldalloc = sb->alloc;
566
Linus Torvaldsb11b7e12008-12-17 17:36:40[diff] [blame]567 if (hint < 32)
568 hint = 32;
569
570 while (hint < STRBUF_MAXLINK) {
Jeff Kingf3e76ed2018-07-24 10:51:25[diff] [blame]571 ssize_t len;
Linus Torvaldsb11b7e12008-12-17 17:36:40[diff] [blame]572
573 strbuf_grow(sb, hint);
574 len = readlink(path, sb->buf, hint);
575 if (len < 0) {
576 if (errno != ERANGE)
577 break;
578 } else if (len < hint) {
579 strbuf_setlen(sb, len);
580 return 0;
581 }
582
583 /* .. the buffer was too small - try again */
584 hint *= 2;
585 }
René Scharfe2fc64702009-01-06 20:41:14[diff] [blame]586 if (oldalloc == 0)
587 strbuf_release(sb);
Linus Torvaldsb11b7e12008-12-17 17:36:40[diff] [blame]588 return -1;
589}
590
René Scharfef22a76e2014-07-28 18:24:29[diff] [blame]591int strbuf_getcwd(struct strbuf *sb)
592{
593 size_t oldalloc = sb->alloc;
594 size_t guessed_len = 128;
595
596 for (;; guessed_len *= 2) {
597 strbuf_grow(sb, guessed_len);
598 if (getcwd(sb->buf, sb->alloc)) {
599 strbuf_setlen(sb, strlen(sb->buf));
600 return 0;
601 }
René Scharfea54e9382017-03-26 13:43:50[diff] [blame]602
603 /*
604 * If getcwd(3) is implemented as a syscall that falls
605 * back to a regular lookup using readdir(3) etc. then
606 * we may be able to avoid EACCES by providing enough
607 * space to the syscall as it's not necessarily bound
608 * to the same restrictions as the fallback.
609 */
610 if (errno == EACCES && guessed_len < PATH_MAX)
611 continue;
612
René Scharfef22a76e2014-07-28 18:24:29[diff] [blame]613 if (errno != ERANGE)
614 break;
615 }
616 if (oldalloc == 0)
617 strbuf_release(sb);
618 else
619 strbuf_reset(sb);
620 return -1;
621}
622
Jeff King0cc30e02015-04-16 09:01:38[diff] [blame]623#ifdef HAVE_GETDELIM
624int strbuf_getwholeline(struct strbuf *sb, FILE *fp, int term)
625{
626 ssize_t r;
627
628 if (feof(fp))
629 return EOF;
630
631 strbuf_reset(sb);
632
633 /* Translate slopbuf to NULL, as we cannot call realloc on it */
634 if (!sb->alloc)
635 sb->buf = NULL;
René Scharfe642956c2017-08-10 20:56:40[diff] [blame]636 errno = 0;
Jeff King0cc30e02015-04-16 09:01:38[diff] [blame]637 r = getdelim(&sb->buf, &sb->alloc, term, fp);
638
639 if (r > 0) {
640 sb->len = r;
641 return 0;
642 }
643 assert(r == -1);
644
645 /*
646 * Normally we would have called xrealloc, which will try to free
647 * memory and recover. But we have no way to tell getdelim() to do so.
648 * Worse, we cannot try to recover ENOMEM ourselves, because we have
649 * no idea how many bytes were read by getdelim.
650 *
651 * Dying here is reasonable. It mirrors what xrealloc would do on
652 * catastrophic memory failure. We skip the opportunity to free pack
653 * memory and retry, but that's unlikely to help for a malloc small
654 * enough to hold a single line of input, anyway.
655 */
656 if (errno == ENOMEM)
657 die("Out of memory, getdelim failed");
658
Jeff Kingb7090432016-03-05 18:43:30[diff] [blame]659 /*
660 * Restore strbuf invariants; if getdelim left us with a NULL pointer,
661 * we can just re-init, but otherwise we should make sure that our
662 * length is empty, and that the result is NUL-terminated.
663 */
Jeff King0cc30e02015-04-16 09:01:38[diff] [blame]664 if (!sb->buf)
665 strbuf_init(sb, 0);
Jeff Kingb7090432016-03-05 18:43:30[diff] [blame]666 else
667 strbuf_reset(sb);
Jeff King0cc30e02015-04-16 09:01:38[diff] [blame]668 return EOF;
669}
670#else
Brandon Caseyc7e4f0d2009-08-05 03:31:56[diff] [blame]671int strbuf_getwholeline(struct strbuf *sb, FILE *fp, int term)
Pierre Habouzit917c9a72007-09-15 13:56:50[diff] [blame]672{
Junio C Hamanod1df5742005-04-26 01:26:45[diff] [blame]673 int ch;
Pierre Habouzite6c019d2007-09-17 09:19:04[diff] [blame]674
Pierre Habouzite6c019d2007-09-17 09:19:04[diff] [blame]675 if (feof(fp))
676 return EOF;
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]677
678 strbuf_reset(sb);
Jeff King82912d12015-04-16 08:49:06[diff] [blame]679 flockfile(fp);
680 while ((ch = getc_unlocked(fp)) != EOF) {
Jeff Kingf80c1532015-04-16 08:58:54[diff] [blame]681 if (!strbuf_avail(sb))
682 strbuf_grow(sb, 1);
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]683 sb->buf[sb->len++] = ch;
Brandon Caseyc7e4f0d2009-08-05 03:31:56[diff] [blame]684 if (ch == term)
685 break;
Junio C Hamanod1df5742005-04-26 01:26:45[diff] [blame]686 }
Jeff King82912d12015-04-16 08:49:06[diff] [blame]687 funlockfile(fp);
Pierre Habouzite6c019d2007-09-17 09:19:04[diff] [blame]688 if (ch == EOF && sb->len == 0)
689 return EOF;
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]690
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]691 sb->buf[sb->len] = '\0';
Pierre Habouzite6c019d2007-09-17 09:19:04[diff] [blame]692 return 0;
Junio C Hamanod1df5742005-04-26 01:26:45[diff] [blame]693}
Jeff King0cc30e02015-04-16 09:01:38[diff] [blame]694#endif
Kristian Høgsberga9390b92007-09-18 00:06:46[diff] [blame]695
Patrick Steinhardtbd021f32020-03-30 13:46:27[diff] [blame]696int strbuf_appendwholeline(struct strbuf *sb, FILE *fp, int term)
697{
698 struct strbuf line = STRBUF_INIT;
699 if (strbuf_getwholeline(&line, fp, term))
700 return EOF;
701 strbuf_addbuf(sb, &line);
702 strbuf_release(&line);
703 return 0;
704}
705
Junio C Hamano1a0c8df2016-01-14 02:32:23[diff] [blame]706static int strbuf_getdelim(struct strbuf *sb, FILE *fp, int term)
Brandon Caseyc7e4f0d2009-08-05 03:31:56[diff] [blame]707{
708 if (strbuf_getwholeline(sb, fp, term))
709 return EOF;
Junio C Hamanodce80bd2016-01-13 23:10:45[diff] [blame]710 if (sb->buf[sb->len - 1] == term)
711 strbuf_setlen(sb, sb->len - 1);
Brandon Caseyc7e4f0d2009-08-05 03:31:56[diff] [blame]712 return 0;
713}
714
Junio C Hamano1a0c8df2016-01-14 02:32:23[diff] [blame]715int strbuf_getline(struct strbuf *sb, FILE *fp)
Junio C Hamanoc8aa9fd2015-10-28 20:17:29[diff] [blame]716{
717 if (strbuf_getwholeline(sb, fp, '\n'))
718 return EOF;
719 if (sb->buf[sb->len - 1] == '\n') {
720 strbuf_setlen(sb, sb->len - 1);
721 if (sb->len && sb->buf[sb->len - 1] == '\r')
722 strbuf_setlen(sb, sb->len - 1);
723 }
724 return 0;
725}
726
Junio C Hamano8f309ae2016-01-13 23:31:17[diff] [blame]727int strbuf_getline_lf(struct strbuf *sb, FILE *fp)
728{
Junio C Hamano1a0c8df2016-01-14 02:32:23[diff] [blame]729 return strbuf_getdelim(sb, fp, '\n');
Junio C Hamano8f309ae2016-01-13 23:31:17[diff] [blame]730}
731
732int strbuf_getline_nul(struct strbuf *sb, FILE *fp)
733{
Junio C Hamano1a0c8df2016-01-14 02:32:23[diff] [blame]734 return strbuf_getdelim(sb, fp, '\0');
Junio C Hamano8f309ae2016-01-13 23:31:17[diff] [blame]735}
736
Thomas Rast5e8617f2012-02-22 19:34:22[diff] [blame]737int strbuf_getwholeline_fd(struct strbuf *sb, int fd, int term)
738{
739 strbuf_reset(sb);
740
741 while (1) {
742 char ch;
743 ssize_t len = xread(fd, &ch, 1);
744 if (len <= 0)
745 return EOF;
746 strbuf_addch(sb, ch);
747 if (ch == term)
748 break;
749 }
750 return 0;
751}
752
Michael Haggerty6c8afe42015-07-03 13:59:32[diff] [blame]753ssize_t strbuf_read_file(struct strbuf *sb, const char *path, size_t hint)
Kristian Høgsberga9390b92007-09-18 00:06:46[diff] [blame]754{
Michael Haggerty6c8afe42015-07-03 13:59:32[diff] [blame]755 int fd;
756 ssize_t len;
Jeff King79f0ba12018-02-23 07:00:54[diff] [blame]757 int saved_errno;
Kristian Høgsberga9390b92007-09-18 00:06:46[diff] [blame]758
759 fd = open(path, O_RDONLY);
760 if (fd < 0)
761 return -1;
Pierre Habouzit387e7e12007-09-27 13:25:55[diff] [blame]762 len = strbuf_read(sb, fd, hint);
Jeff King79f0ba12018-02-23 07:00:54[diff] [blame]763 saved_errno = errno;
Kristian Høgsberga9390b92007-09-18 00:06:46[diff] [blame]764 close(fd);
Jeff King79f0ba12018-02-23 07:00:54[diff] [blame]765 if (len < 0) {
766 errno = saved_errno;
Kristian Høgsberga9390b92007-09-18 00:06:46[diff] [blame]767 return -1;
Jeff King79f0ba12018-02-23 07:00:54[diff] [blame]768 }
Kristian Høgsberga9390b92007-09-18 00:06:46[diff] [blame]769
770 return len;
771}
Junio C Hamano895680f2011-11-05 04:06:30[diff] [blame]772
773void strbuf_add_lines(struct strbuf *out, const char *prefix,
774 const char *buf, size_t size)
775{
Junio C Hamanoeff80a92013-01-16 19:18:48[diff] [blame]776 add_lines(out, prefix, NULL, buf, size);
Junio C Hamano895680f2011-11-05 04:06:30[diff] [blame]777}
Junio C Hamano367d20e2011-12-20 00:05:16[diff] [blame]778
Michael Haggerty5963c032012-11-25 11:08:34[diff] [blame]779void strbuf_addstr_xml_quoted(struct strbuf *buf, const char *s)
780{
781 while (*s) {
782 size_t len = strcspn(s, "\"<>&");
783 strbuf_add(buf, s, len);
784 s += len;
785 switch (*s) {
786 case '"':
787 strbuf_addstr(buf, "&quot;");
788 break;
789 case '<':
790 strbuf_addstr(buf, "&lt;");
791 break;
792 case '>':
793 strbuf_addstr(buf, "&gt;");
794 break;
795 case '&':
796 strbuf_addstr(buf, "&amp;");
797 break;
798 case 0:
799 return;
800 }
801 s++;
802 }
803}
804
Matthew DeVorec2694952019-06-27 22:54:11[diff] [blame]805int is_rfc3986_reserved_or_unreserved(char ch)
Jeff Kingc5051162011-12-10 10:34:20[diff] [blame]806{
Matthew DeVorec2694952019-06-27 22:54:11[diff] [blame]807 if (is_rfc3986_unreserved(ch))
808 return 1;
Jeff Kingc5051162011-12-10 10:34:20[diff] [blame]809 switch (ch) {
810 case '!': case '*': case '\'': case '(': case ')': case ';':
811 case ':': case '@': case '&': case '=': case '+': case '$':
812 case ',': case '/': case '?': case '#': case '[': case ']':
813 return 1;
814 }
815 return 0;
816}
817
Matthew DeVorec2694952019-06-27 22:54:11[diff] [blame]818int is_rfc3986_unreserved(char ch)
Jeff Kingc5051162011-12-10 10:34:20[diff] [blame]819{
820 return isalnum(ch) ||
821 ch == '-' || ch == '_' || ch == '.' || ch == '~';
822}
823
Junio C Hamanoea03a8e2012-09-16 05:43:15[diff] [blame]824static void strbuf_add_urlencode(struct strbuf *sb, const char *s, size_t len,
Matthew DeVorec2694952019-06-27 22:54:11[diff] [blame]825 char_predicate allow_unencoded_fn)
Jeff Kingc5051162011-12-10 10:34:20[diff] [blame]826{
827 strbuf_grow(sb, len);
828 while (len--) {
829 char ch = *s++;
Matthew DeVorec2694952019-06-27 22:54:11[diff] [blame]830 if (allow_unencoded_fn(ch))
Jeff Kingc5051162011-12-10 10:34:20[diff] [blame]831 strbuf_addch(sb, ch);
832 else
Julien Dusser4c267f22017-12-22 17:24:37[diff] [blame]833 strbuf_addf(sb, "%%%02x", (unsigned char)ch);
Jeff Kingc5051162011-12-10 10:34:20[diff] [blame]834 }
835}
836
837void strbuf_addstr_urlencode(struct strbuf *sb, const char *s,
Matthew DeVorec2694952019-06-27 22:54:11[diff] [blame]838 char_predicate allow_unencoded_fn)
Jeff Kingc5051162011-12-10 10:34:20[diff] [blame]839{
Matthew DeVorec2694952019-06-27 22:54:11[diff] [blame]840 strbuf_add_urlencode(sb, s, strlen(s), allow_unencoded_fn);
Jeff Kingc5051162011-12-10 10:34:20[diff] [blame]841}
Nguyễn Thái Ngọc Duy9a0a30a2012-04-23 12:30:22[diff] [blame]842
Dimitriy Ryazantcev8f354a12019-07-02 18:22:48[diff] [blame]843static void strbuf_humanise(struct strbuf *buf, off_t bytes,
844 int humanise_rate)
Antoine Pelisse079b5462013-04-10 19:03:23[diff] [blame]845{
846 if (bytes > 1 << 30) {
Dimitriy Ryazantcev8f354a12019-07-02 18:22:48[diff] [blame]847 strbuf_addf(buf,
848 humanise_rate == 0 ?
849 /* TRANSLATORS: IEC 80000-13:2008 gibibyte */
850 _("%u.%2.2u GiB") :
851 /* TRANSLATORS: IEC 80000-13:2008 gibibyte/second */
852 _("%u.%2.2u GiB/s"),
Jeff King7726d362018-07-24 10:52:29[diff] [blame]853 (unsigned)(bytes >> 30),
854 (unsigned)(bytes & ((1 << 30) - 1)) / 10737419);
Antoine Pelisse079b5462013-04-10 19:03:23[diff] [blame]855 } else if (bytes > 1 << 20) {
Jeff King7726d362018-07-24 10:52:29[diff] [blame]856 unsigned x = bytes + 5243; /* for rounding */
Dimitriy Ryazantcev8f354a12019-07-02 18:22:48[diff] [blame]857 strbuf_addf(buf,
858 humanise_rate == 0 ?
859 /* TRANSLATORS: IEC 80000-13:2008 mebibyte */
860 _("%u.%2.2u MiB") :
861 /* TRANSLATORS: IEC 80000-13:2008 mebibyte/second */
862 _("%u.%2.2u MiB/s"),
Antoine Pelisse079b5462013-04-10 19:03:23[diff] [blame]863 x >> 20, ((x & ((1 << 20) - 1)) * 100) >> 20);
864 } else if (bytes > 1 << 10) {
Jeff King7726d362018-07-24 10:52:29[diff] [blame]865 unsigned x = bytes + 5; /* for rounding */
Dimitriy Ryazantcev8f354a12019-07-02 18:22:48[diff] [blame]866 strbuf_addf(buf,
867 humanise_rate == 0 ?
868 /* TRANSLATORS: IEC 80000-13:2008 kibibyte */
869 _("%u.%2.2u KiB") :
870 /* TRANSLATORS: IEC 80000-13:2008 kibibyte/second */
871 _("%u.%2.2u KiB/s"),
Antoine Pelisse079b5462013-04-10 19:03:23[diff] [blame]872 x >> 10, ((x & ((1 << 10) - 1)) * 100) >> 10);
873 } else {
Dimitriy Ryazantcev8f354a12019-07-02 18:22:48[diff] [blame]874 strbuf_addf(buf,
875 humanise_rate == 0 ?
876 /* TRANSLATORS: IEC 80000-13:2008 byte */
877 Q_("%u byte", "%u bytes", (unsigned)bytes) :
878 /* TRANSLATORS: IEC 80000-13:2008 byte/second */
879 Q_("%u byte/s", "%u bytes/s", (unsigned)bytes),
880 (unsigned)bytes);
Antoine Pelisse079b5462013-04-10 19:03:23[diff] [blame]881 }
882}
883
Dimitriy Ryazantcev8f354a12019-07-02 18:22:48[diff] [blame]884void strbuf_humanise_bytes(struct strbuf *buf, off_t bytes)
885{
886 strbuf_humanise(buf, bytes, 0);
887}
888
889void strbuf_humanise_rate(struct strbuf *buf, off_t bytes)
890{
891 strbuf_humanise(buf, bytes, 1);
892}
893
René Scharfe679eebe2014-07-28 18:33:55[diff] [blame]894void strbuf_add_absolute_path(struct strbuf *sb, const char *path)
895{
896 if (!*path)
897 die("The empty string is not a valid path");
898 if (!is_absolute_path(path)) {
899 struct stat cwd_stat, pwd_stat;
900 size_t orig_len = sb->len;
901 char *cwd = xgetcwd();
902 char *pwd = getenv("PWD");
903 if (pwd && strcmp(pwd, cwd) &&
904 !stat(cwd, &cwd_stat) &&
905 (cwd_stat.st_dev || cwd_stat.st_ino) &&
906 !stat(pwd, &pwd_stat) &&
907 pwd_stat.st_dev == cwd_stat.st_dev &&
908 pwd_stat.st_ino == cwd_stat.st_ino)
909 strbuf_addstr(sb, pwd);
910 else
911 strbuf_addstr(sb, cwd);
912 if (sb->len > orig_len && !is_dir_sep(sb->buf[sb->len - 1]))
913 strbuf_addch(sb, '/');
914 free(cwd);
915 }
916 strbuf_addstr(sb, path);
917}
918
René Scharfe33ad9dd2017-02-25 16:00:33[diff] [blame]919void strbuf_add_real_path(struct strbuf *sb, const char *path)
920{
921 if (sb->len) {
922 struct strbuf resolved = STRBUF_INIT;
923 strbuf_realpath(&resolved, path, 1);
924 strbuf_addbuf(sb, &resolved);
925 strbuf_release(&resolved);
926 } else
927 strbuf_realpath(sb, path, 1);
928}
929
Nguyễn Thái Ngọc Duy9a0a30a2012-04-23 12:30:22[diff] [blame]930int printf_ln(const char *fmt, ...)
931{
932 int ret;
933 va_list ap;
934 va_start(ap, fmt);
935 ret = vprintf(fmt, ap);
936 va_end(ap);
937 if (ret < 0 || putchar('\n') == EOF)
938 return -1;
939 return ret + 1;
940}
941
942int fprintf_ln(FILE *fp, const char *fmt, ...)
943{
944 int ret;
945 va_list ap;
946 va_start(ap, fmt);
947 ret = vfprintf(fp, fmt, ap);
948 va_end(ap);
949 if (ret < 0 || putc('\n', fp) == EOF)
950 return -1;
951 return ret + 1;
952}
Jeff King88d5a6f2014-05-22 09:44:09[diff] [blame]953
954char *xstrdup_tolower(const char *string)
955{
956 char *result;
957 size_t len, i;
958
959 len = strlen(string);
Jeff King3733e692016-02-22 22:44:28[diff] [blame]960 result = xmallocz(len);
Jeff King88d5a6f2014-05-22 09:44:09[diff] [blame]961 for (i = 0; i < len; i++)
962 result[i] = tolower(string[i]);
Jeff King88d5a6f2014-05-22 09:44:09[diff] [blame]963 return result;
964}
Jeff King30a0ddb2014-06-18 20:01:34[diff] [blame]965
Lars Schneider13ecb4632018-02-15 15:27:06[diff] [blame]966char *xstrdup_toupper(const char *string)
967{
968 char *result;
969 size_t len, i;
970
971 len = strlen(string);
972 result = xmallocz(len);
973 for (i = 0; i < len; i++)
974 result[i] = toupper(string[i]);
Jeff King88d5a6f2014-05-22 09:44:09[diff] [blame]975 return result;
976}
Jeff King30a0ddb2014-06-18 20:01:34[diff] [blame]977
978char *xstrvfmt(const char *fmt, va_list ap)
979{
980 struct strbuf buf = STRBUF_INIT;
981 strbuf_vaddf(&buf, fmt, ap);
982 return strbuf_detach(&buf, NULL);
983}
984
985char *xstrfmt(const char *fmt, ...)
986{
987 va_list ap;
988 char *ret;
989
990 va_start(ap, fmt);
991 ret = xstrvfmt(fmt, ap);
992 va_end(ap);
993
994 return ret;
995}
Jeff Kingaa1462c2015-06-25 16:55:45[diff] [blame]996
René Scharfec3fbf812017-06-15 12:29:53[diff] [blame]997void strbuf_addftime(struct strbuf *sb, const char *fmt, const struct tm *tm,
Ævar Arnfjörð Bjarmason3b702232017-07-01 13:15:47[diff] [blame]998 int tz_offset, int suppress_tz_name)
Jeff Kingaa1462c2015-06-25 16:55:45[diff] [blame]999{
René Scharfec3fbf812017-06-15 12:29:53[diff] [blame]1000 struct strbuf munged_fmt = STRBUF_INIT;
Jeff Kinge4f031e2015-06-30 13:26:53[diff] [blame]1001 size_t hint = 128;
Jeff Kingaa1462c2015-06-25 16:55:45[diff] [blame]1002 size_t len;
1003
Jeff Kinge4f031e2015-06-30 13:26:53[diff] [blame]1004 if (!*fmt)
1005 return;
1006
René Scharfec3fbf812017-06-15 12:29:53[diff] [blame]1007 /*
1008 * There is no portable way to pass timezone information to
Jeff King9b591b92021-11-02 11:35:34[diff] [blame]1009 * strftime, so we handle %z and %Z here. Likewise '%s', because
1010 * going back to an epoch time requires knowing the zone.
1011 *
1012 * Note that tz_offset is in the "[-+]HHMM" decimal form; this is what
1013 * we want for %z, but the computation for %s has to convert to number
1014 * of seconds.
René Scharfec3fbf812017-06-15 12:29:53[diff] [blame]1015 */
1016 for (;;) {
1017 const char *percent = strchrnul(fmt, '%');
1018 strbuf_add(&munged_fmt, fmt, percent - fmt);
1019 if (!*percent)
1020 break;
1021 fmt = percent + 1;
1022 switch (*fmt) {
1023 case '%':
1024 strbuf_addstr(&munged_fmt, "%%");
1025 fmt++;
1026 break;
Jeff King9b591b92021-11-02 11:35:34[diff] [blame]1027 case 's':
1028 strbuf_addf(&munged_fmt, "%"PRItime,
1029 (timestamp_t)tm_to_time_t(tm) -
1030 3600 * (tz_offset / 100) -
1031 60 * (tz_offset % 100));
1032 fmt++;
1033 break;
René Scharfec3fbf812017-06-15 12:29:53[diff] [blame]1034 case 'z':
1035 strbuf_addf(&munged_fmt, "%+05d", tz_offset);
1036 fmt++;
1037 break;
1038 case 'Z':
Ævar Arnfjörð Bjarmason3b702232017-07-01 13:15:47[diff] [blame]1039 if (suppress_tz_name) {
René Scharfec3fbf812017-06-15 12:29:53[diff] [blame]1040 fmt++;
1041 break;
1042 }
1043 /* FALLTHROUGH */
1044 default:
1045 strbuf_addch(&munged_fmt, '%');
1046 }
1047 }
1048 fmt = munged_fmt.buf;
1049
Jeff Kinge4f031e2015-06-30 13:26:53[diff] [blame]1050 strbuf_grow(sb, hint);
Jeff Kingaa1462c2015-06-25 16:55:45[diff] [blame]1051 len = strftime(sb->buf + sb->len, sb->alloc - sb->len, fmt, tm);
1052
1053 if (!len) {
1054 /*
Jeff Kinge4f031e2015-06-30 13:26:53[diff] [blame]1055 * strftime reports "0" if it could not fit the result in the buffer.
1056 * Unfortunately, it also reports "0" if the requested time string
1057 * takes 0 bytes. So our strategy is to munge the format so that the
1058 * output contains at least one character, and then drop the extra
1059 * character before returning.
Jeff Kingaa1462c2015-06-25 16:55:45[diff] [blame]1060 */
René Scharfec3fbf812017-06-15 12:29:53[diff] [blame]1061 strbuf_addch(&munged_fmt, ' ');
Jeff Kinge4f031e2015-06-30 13:26:53[diff] [blame]1062 while (!len) {
1063 hint *= 2;
1064 strbuf_grow(sb, hint);
1065 len = strftime(sb->buf + sb->len, sb->alloc - sb->len,
1066 munged_fmt.buf, tm);
1067 }
Jeff Kinge4f031e2015-06-30 13:26:53[diff] [blame]1068 len--; /* drop munged space */
Jeff Kingaa1462c2015-06-25 16:55:45[diff] [blame]1069 }
René Scharfec3fbf812017-06-15 12:29:53[diff] [blame]1070 strbuf_release(&munged_fmt);
Jeff Kinge4f031e2015-06-30 13:26:53[diff] [blame]1071 strbuf_setlen(sb, sb->len + len);
Jeff Kingaa1462c2015-06-25 16:55:45[diff] [blame]1072}
Jeff Kingaf49c6d2015-09-24 21:05:45[diff] [blame]1073
Jonathan Tan155b5172021-10-08 21:08:17[diff] [blame]1074void strbuf_repo_add_unique_abbrev(struct strbuf *sb, struct repository *repo,
1075 const struct object_id *oid, int abbrev_len)
Jeff Kingaf49c6d2015-09-24 21:05:45[diff] [blame]1076{
1077 int r;
brian m. carlson4b048c92018-07-16 01:27:57[diff] [blame]1078 strbuf_grow(sb, GIT_MAX_HEXSZ + 1);
Jonathan Tan155b5172021-10-08 21:08:17[diff] [blame]1079 r = repo_find_unique_abbrev_r(repo, sb->buf + sb->len, oid, abbrev_len);
Jeff Kingaf49c6d2015-09-24 21:05:45[diff] [blame]1080 strbuf_setlen(sb, sb->len + r);
1081}
Junio C Hamano1ad7c0f2015-10-26 22:55:20[diff] [blame]1082
Jonathan Tan155b5172021-10-08 21:08:17[diff] [blame]1083void strbuf_add_unique_abbrev(struct strbuf *sb, const struct object_id *oid,
1084 int abbrev_len)
1085{
1086 strbuf_repo_add_unique_abbrev(sb, the_repository, oid, abbrev_len);
1087}
1088
Tobias Klauser63af4a82015-10-16 15:16:42[diff] [blame]1089/*
1090 * Returns the length of a line, without trailing spaces.
1091 *
1092 * If the line ends with newline, it will be removed too.
1093 */
1094static size_t cleanup(char *line, size_t len)
1095{
1096 while (len) {
1097 unsigned char c = line[len - 1];
1098 if (!isspace(c))
1099 break;
1100 len--;
1101 }
1102
1103 return len;
1104}
1105
1106/*
1107 * Remove empty lines from the beginning and end
1108 * and also trailing spaces from every line.
1109 *
1110 * Turn multiple consecutive empty lines between paragraphs
1111 * into just one empty line.
1112 *
1113 * If the input has only empty lines and spaces,
1114 * no output will be produced.
1115 *
1116 * If last line does not have a newline at the end, one is added.
1117 *
1118 * Enable skip_comments to skip every line starting with comment
1119 * character.
1120 */
1121void strbuf_stripspace(struct strbuf *sb, int skip_comments)
1122{
Jeff King26114c02018-07-24 10:51:08[diff] [blame]1123 size_t empties = 0;
Tobias Klauser63af4a82015-10-16 15:16:42[diff] [blame]1124 size_t i, j, len, newlen;
1125 char *eol;
1126
1127 /* We may have to add a newline. */
1128 strbuf_grow(sb, 1);
1129
1130 for (i = j = 0; i < sb->len; i += len, j += newlen) {
1131 eol = memchr(sb->buf + i, '\n', sb->len - i);
1132 len = eol ? eol - (sb->buf + i) + 1 : sb->len - i;
1133
1134 if (skip_comments && len && sb->buf[i] == comment_line_char) {
1135 newlen = 0;
1136 continue;
1137 }
1138 newlen = cleanup(sb->buf + i, len);
1139
1140 /* Not just an empty line? */
1141 if (newlen) {
1142 if (empties > 0 && j > 0)
1143 sb->buf[j++] = '\n';
1144 empties = 0;
1145 memmove(sb->buf + j, sb->buf + i, newlen);
1146 sb->buf[newlen + j++] = '\n';
1147 } else {
1148 empties++;
1149 }
1150 }
1151
1152 strbuf_setlen(sb, j);
1153}
Jeff King670c3592016-10-03 20:34:17[diff] [blame]1154
1155int strbuf_normalize_path(struct strbuf *src)
1156{
1157 struct strbuf dst = STRBUF_INIT;
1158
1159 strbuf_grow(&dst, src->len);
1160 if (normalize_path_copy(dst.buf, src->buf) < 0) {
1161 strbuf_release(&dst);
1162 return -1;
1163 }
1164
1165 /*
1166 * normalize_path does not tell us the new length, so we have to
1167 * compute it by looking for the new NUL it placed
1168 */
1169 strbuf_setlen(&dst, strlen(dst.buf));
1170 strbuf_swap(src, &dst);
1171 strbuf_release(&dst);
1172 return 0;
1173}
Johannes Schindelinb38dd9e2019-12-13 08:08:00[diff] [blame]1174
1175int strbuf_edit_interactively(struct strbuf *buffer, const char *path,
1176 const char *const *env)
1177{
1178 char *path2 = NULL;
1179 int fd, res = 0;
1180
1181 if (!is_absolute_path(path))
1182 path = path2 = xstrdup(git_path("%s", path));
1183
1184 fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0666);
1185 if (fd < 0)
1186 res = error_errno(_("could not open '%s' for writing"), path);
1187 else if (write_in_full(fd, buffer->buf, buffer->len) < 0) {
1188 res = error_errno(_("could not write to '%s'"), path);
1189 close(fd);
1190 } else if (close(fd) < 0)
1191 res = error_errno(_("could not close '%s'"), path);
1192 else {
1193 strbuf_reset(buffer);
1194 if (launch_editor(path, buffer, env) < 0)
1195 res = error_errno(_("could not edit '%s'"), path);
1196 unlink(path);
1197 }
1198
1199 free(path2);
1200 return res;
1201}