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Commit | Line | Data |
---|---|---|
812666c8 | 1 | #include "cache.h" |
a2fab531 | 2 | #include "refs.h" |
d4241f52 | 3 | #include "utf8.h" |
d1df5743 | 4 | |
95662315 CC |
5 | int starts_with(const char *str, const char *prefix) |
6 | { | |
7 | for (; ; str++, prefix++) | |
8 | if (!*prefix) | |
9 | return 1; | |
10 | else if (*str != *prefix) | |
11 | return 0; | |
12 | } | |
13 | ||
afaef55e CC |
14 | int skip_to_optional_arg_default(const char *str, const char *prefix, |
15 | const char **arg, const char *def) | |
16 | { | |
17 | const char *p; | |
18 | ||
19 | if (!skip_prefix(str, prefix, &p)) | |
20 | return 0; | |
21 | ||
22 | if (!*p) { | |
23 | if (arg) | |
24 | *arg = def; | |
25 | return 1; | |
26 | } | |
27 | ||
28 | if (*p != '=') | |
29 | return 0; | |
30 | ||
31 | if (arg) | |
32 | *arg = p + 1; | |
33 | return 1; | |
34 | } | |
35 | ||
b315c5c0 PH |
36 | /* |
37 | * Used as the default ->buf value, so that people can always assume | |
38 | * buf is non NULL and ->buf is NUL terminated even for a freshly | |
39 | * initialized strbuf. | |
40 | */ | |
41 | char strbuf_slopbuf[1]; | |
42 | ||
917c9a71 PH |
43 | void strbuf_init(struct strbuf *sb, size_t hint) |
44 | { | |
b315c5c0 PH |
45 | sb->alloc = sb->len = 0; |
46 | sb->buf = strbuf_slopbuf; | |
8c74ef1e | 47 | if (hint) |
f1696ee3 | 48 | strbuf_grow(sb, hint); |
d1df5743 JH |
49 | } |
50 | ||
917c9a71 PH |
51 | void strbuf_release(struct strbuf *sb) |
52 | { | |
b315c5c0 PH |
53 | if (sb->alloc) { |
54 | free(sb->buf); | |
55 | strbuf_init(sb, 0); | |
56 | } | |
b449f4cf PH |
57 | } |
58 | ||
b315c5c0 | 59 | char *strbuf_detach(struct strbuf *sb, size_t *sz) |
917c9a71 | 60 | { |
08ad56f3 JK |
61 | char *res; |
62 | strbuf_grow(sb, 0); | |
63 | res = sb->buf; | |
b315c5c0 PH |
64 | if (sz) |
65 | *sz = sb->len; | |
f1696ee3 | 66 | strbuf_init(sb, 0); |
b449f4cf PH |
67 | return res; |
68 | } | |
69 | ||
917c9a71 PH |
70 | void strbuf_attach(struct strbuf *sb, void *buf, size_t len, size_t alloc) |
71 | { | |
72 | strbuf_release(sb); | |
73 | sb->buf = buf; | |
74 | sb->len = len; | |
75 | sb->alloc = alloc; | |
76 | strbuf_grow(sb, 0); | |
77 | sb->buf[sb->len] = '\0'; | |
78 | } | |
79 | ||
80 | void strbuf_grow(struct strbuf *sb, size_t extra) | |
81 | { | |
8c74ef1e | 82 | int new_buf = !sb->alloc; |
1368f650 JN |
83 | if (unsigned_add_overflows(extra, 1) || |
84 | unsigned_add_overflows(sb->len, extra + 1)) | |
b449f4cf | 85 | die("you want to use way too much memory"); |
8c74ef1e | 86 | if (new_buf) |
b315c5c0 | 87 | sb->buf = NULL; |
b449f4cf | 88 | ALLOC_GROW(sb->buf, sb->len + extra + 1, sb->alloc); |
8c74ef1e TR |
89 | if (new_buf) |
90 | sb->buf[0] = '\0'; | |
b449f4cf PH |
91 | } |
92 | ||
eacd6dc5 LS |
93 | void strbuf_trim(struct strbuf *sb) |
94 | { | |
3bb55e8a BG |
95 | strbuf_rtrim(sb); |
96 | strbuf_ltrim(sb); | |
eacd6dc5 | 97 | } |
c64a8d20 | 98 | |
f1696ee3 PH |
99 | void strbuf_rtrim(struct strbuf *sb) |
100 | { | |
101 | while (sb->len > 0 && isspace((unsigned char)sb->buf[sb->len - 1])) | |
102 | sb->len--; | |
103 | sb->buf[sb->len] = '\0'; | |
104 | } | |
105 | ||
c64a8d20 NTND |
106 | void strbuf_trim_trailing_dir_sep(struct strbuf *sb) |
107 | { | |
108 | while (sb->len > 0 && is_dir_sep((unsigned char)sb->buf[sb->len - 1])) | |
109 | sb->len--; | |
110 | sb->buf[sb->len] = '\0'; | |
111 | } | |
112 | ||
eacd6dc5 LS |
113 | void strbuf_ltrim(struct strbuf *sb) |
114 | { | |
115 | char *b = sb->buf; | |
116 | while (sb->len > 0 && isspace(*b)) { | |
117 | b++; | |
118 | sb->len--; | |
119 | } | |
120 | memmove(sb->buf, b, sb->len); | |
121 | sb->buf[sb->len] = '\0'; | |
122 | } | |
123 | ||
d4241f52 JK |
124 | int strbuf_reencode(struct strbuf *sb, const char *from, const char *to) |
125 | { | |
126 | char *out; | |
127 | int len; | |
128 | ||
129 | if (same_encoding(from, to)) | |
130 | return 0; | |
131 | ||
132 | out = reencode_string_len(sb->buf, sb->len, to, from, &len); | |
133 | if (!out) | |
134 | return -1; | |
135 | ||
136 | strbuf_attach(sb, out, len, len); | |
137 | return 0; | |
138 | } | |
139 | ||
ffb20ce1 JK |
140 | void strbuf_tolower(struct strbuf *sb) |
141 | { | |
142 | char *p = sb->buf, *end = sb->buf + sb->len; | |
143 | for (; p < end; p++) | |
144 | *p = tolower(*p); | |
145 | } | |
146 | ||
17b73dc6 MH |
147 | struct strbuf **strbuf_split_buf(const char *str, size_t slen, |
148 | int terminator, int max) | |
eacd6dc5 | 149 | { |
b8c2c1fa MH |
150 | struct strbuf **ret = NULL; |
151 | size_t nr = 0, alloc = 0; | |
eacd6dc5 LS |
152 | struct strbuf *t; |
153 | ||
1173bb33 MH |
154 | while (slen) { |
155 | int len = slen; | |
156 | if (max <= 0 || nr + 1 < max) { | |
17b73dc6 | 157 | const char *end = memchr(str, terminator, slen); |
1173bb33 MH |
158 | if (end) |
159 | len = end - str + 1; | |
160 | } | |
eacd6dc5 LS |
161 | t = xmalloc(sizeof(struct strbuf)); |
162 | strbuf_init(t, len); | |
1173bb33 | 163 | strbuf_add(t, str, len); |
b8c2c1fa MH |
164 | ALLOC_GROW(ret, nr + 2, alloc); |
165 | ret[nr++] = t; | |
1173bb33 MH |
166 | str += len; |
167 | slen -= len; | |
eacd6dc5 | 168 | } |
b8c2c1fa MH |
169 | ALLOC_GROW(ret, nr + 1, alloc); /* In case string was empty */ |
170 | ret[nr] = NULL; | |
eacd6dc5 LS |
171 | return ret; |
172 | } | |
173 | ||
174 | void strbuf_list_free(struct strbuf **sbs) | |
175 | { | |
176 | struct strbuf **s = sbs; | |
177 | ||
178 | while (*s) { | |
179 | strbuf_release(*s); | |
180 | free(*s++); | |
181 | } | |
182 | free(sbs); | |
183 | } | |
184 | ||
9b200fd6 | 185 | int strbuf_cmp(const struct strbuf *a, const struct strbuf *b) |
45f66f64 | 186 | { |
8f024655 AR |
187 | int len = a->len < b->len ? a->len: b->len; |
188 | int cmp = memcmp(a->buf, b->buf, len); | |
189 | if (cmp) | |
190 | return cmp; | |
191 | return a->len < b->len ? -1: a->len != b->len; | |
45f66f64 PH |
192 | } |
193 | ||
917c9a71 PH |
194 | void strbuf_splice(struct strbuf *sb, size_t pos, size_t len, |
195 | const void *data, size_t dlen) | |
196 | { | |
1368f650 | 197 | if (unsigned_add_overflows(pos, len)) |
917c9a71 PH |
198 | die("you want to use way too much memory"); |
199 | if (pos > sb->len) | |
200 | die("`pos' is too far after the end of the buffer"); | |
201 | if (pos + len > sb->len) | |
202 | die("`pos + len' is too far after the end of the buffer"); | |
203 | ||
204 | if (dlen >= len) | |
205 | strbuf_grow(sb, dlen - len); | |
206 | memmove(sb->buf + pos + dlen, | |
207 | sb->buf + pos + len, | |
208 | sb->len - pos - len); | |
209 | memcpy(sb->buf + pos, data, dlen); | |
210 | strbuf_setlen(sb, sb->len + dlen - len); | |
211 | } | |
212 | ||
c76689df PH |
213 | void strbuf_insert(struct strbuf *sb, size_t pos, const void *data, size_t len) |
214 | { | |
215 | strbuf_splice(sb, pos, 0, data, len); | |
216 | } | |
217 | ||
218 | void strbuf_remove(struct strbuf *sb, size_t pos, size_t len) | |
219 | { | |
a8342a41 | 220 | strbuf_splice(sb, pos, len, "", 0); |
c76689df PH |
221 | } |
222 | ||
917c9a71 PH |
223 | void strbuf_add(struct strbuf *sb, const void *data, size_t len) |
224 | { | |
b449f4cf PH |
225 | strbuf_grow(sb, len); |
226 | memcpy(sb->buf + sb->len, data, len); | |
227 | strbuf_setlen(sb, sb->len + len); | |
228 | } | |
229 | ||
31471ba2 RS |
230 | void strbuf_addbuf(struct strbuf *sb, const struct strbuf *sb2) |
231 | { | |
232 | strbuf_grow(sb, sb2->len); | |
233 | memcpy(sb->buf + sb->len, sb2->buf, sb2->len); | |
234 | strbuf_setlen(sb, sb->len + sb2->len); | |
235 | } | |
236 | ||
d07235a0 RS |
237 | void strbuf_addchars(struct strbuf *sb, int c, size_t n) |
238 | { | |
239 | strbuf_grow(sb, n); | |
240 | memset(sb->buf + sb->len, c, n); | |
241 | strbuf_setlen(sb, sb->len + n); | |
242 | } | |
243 | ||
917c9a71 PH |
244 | void strbuf_addf(struct strbuf *sb, const char *fmt, ...) |
245 | { | |
b449f4cf | 246 | va_list ap; |
ebeb6090 JK |
247 | va_start(ap, fmt); |
248 | strbuf_vaddf(sb, fmt, ap); | |
249 | va_end(ap); | |
250 | } | |
251 | ||
eff80a9f JH |
252 | static void add_lines(struct strbuf *out, |
253 | const char *prefix1, | |
254 | const char *prefix2, | |
255 | const char *buf, size_t size) | |
256 | { | |
257 | while (size) { | |
258 | const char *prefix; | |
259 | const char *next = memchr(buf, '\n', size); | |
260 | next = next ? (next + 1) : (buf + size); | |
261 | ||
d55aeb76 JH |
262 | prefix = ((prefix2 && (buf[0] == '\n' || buf[0] == '\t')) |
263 | ? prefix2 : prefix1); | |
eff80a9f JH |
264 | strbuf_addstr(out, prefix); |
265 | strbuf_add(out, buf, next - buf); | |
266 | size -= next - buf; | |
267 | buf = next; | |
268 | } | |
269 | strbuf_complete_line(out); | |
270 | } | |
271 | ||
272 | void strbuf_add_commented_lines(struct strbuf *out, const char *buf, size_t size) | |
273 | { | |
274 | static char prefix1[3]; | |
275 | static char prefix2[2]; | |
276 | ||
277 | if (prefix1[0] != comment_line_char) { | |
5096d490 JK |
278 | xsnprintf(prefix1, sizeof(prefix1), "%c ", comment_line_char); |
279 | xsnprintf(prefix2, sizeof(prefix2), "%c", comment_line_char); | |
eff80a9f JH |
280 | } |
281 | add_lines(out, prefix1, prefix2, buf, size); | |
282 | } | |
283 | ||
284 | void strbuf_commented_addf(struct strbuf *sb, const char *fmt, ...) | |
285 | { | |
286 | va_list params; | |
287 | struct strbuf buf = STRBUF_INIT; | |
288 | int incomplete_line = sb->len && sb->buf[sb->len - 1] != '\n'; | |
289 | ||
290 | va_start(params, fmt); | |
291 | strbuf_vaddf(&buf, fmt, params); | |
292 | va_end(params); | |
293 | ||
294 | strbuf_add_commented_lines(sb, buf.buf, buf.len); | |
295 | if (incomplete_line) | |
296 | sb->buf[--sb->len] = '\0'; | |
297 | ||
298 | strbuf_release(&buf); | |
299 | } | |
300 | ||
ebeb6090 JK |
301 | void strbuf_vaddf(struct strbuf *sb, const char *fmt, va_list ap) |
302 | { | |
303 | int len; | |
304 | va_list cp; | |
b449f4cf | 305 | |
f141bd80 SP |
306 | if (!strbuf_avail(sb)) |
307 | strbuf_grow(sb, 64); | |
ebeb6090 JK |
308 | va_copy(cp, ap); |
309 | len = vsnprintf(sb->buf + sb->len, sb->alloc - sb->len, fmt, cp); | |
310 | va_end(cp); | |
f141bd80 | 311 | if (len < 0) |
ebeb6090 | 312 | die("BUG: your vsnprintf is broken (returned %d)", len); |
f1696ee3 | 313 | if (len > strbuf_avail(sb)) { |
b449f4cf | 314 | strbuf_grow(sb, len); |
b449f4cf | 315 | len = vsnprintf(sb->buf + sb->len, sb->alloc - sb->len, fmt, ap); |
ebeb6090 JK |
316 | if (len > strbuf_avail(sb)) |
317 | die("BUG: your vsnprintf is broken (insatiable)"); | |
b449f4cf PH |
318 | } |
319 | strbuf_setlen(sb, sb->len + len); | |
d1df5743 JH |
320 | } |
321 | ||
c3a670de MC |
322 | void strbuf_expand(struct strbuf *sb, const char *format, expand_fn_t fn, |
323 | void *context) | |
cde75e59 RS |
324 | { |
325 | for (;;) { | |
c3a670de MC |
326 | const char *percent; |
327 | size_t consumed; | |
cde75e59 RS |
328 | |
329 | percent = strchrnul(format, '%'); | |
330 | strbuf_add(sb, format, percent - format); | |
331 | if (!*percent) | |
332 | break; | |
333 | format = percent + 1; | |
334 | ||
0a0416a3 JK |
335 | if (*format == '%') { |
336 | strbuf_addch(sb, '%'); | |
337 | format++; | |
338 | continue; | |
339 | } | |
340 | ||
c3a670de MC |
341 | consumed = fn(sb, format, context); |
342 | if (consumed) | |
343 | format += consumed; | |
344 | else | |
cde75e59 RS |
345 | strbuf_addch(sb, '%'); |
346 | } | |
347 | } | |
348 | ||
9b864e73 RS |
349 | size_t strbuf_expand_dict_cb(struct strbuf *sb, const char *placeholder, |
350 | void *context) | |
351 | { | |
352 | struct strbuf_expand_dict_entry *e = context; | |
353 | size_t len; | |
354 | ||
355 | for (; e->placeholder && (len = strlen(e->placeholder)); e++) { | |
356 | if (!strncmp(placeholder, e->placeholder, len)) { | |
357 | if (e->value) | |
358 | strbuf_addstr(sb, e->value); | |
359 | return len; | |
360 | } | |
361 | } | |
362 | return 0; | |
363 | } | |
364 | ||
361df5df JK |
365 | void strbuf_addbuf_percentquote(struct strbuf *dst, const struct strbuf *src) |
366 | { | |
367 | int i, len = src->len; | |
368 | ||
369 | for (i = 0; i < len; i++) { | |
370 | if (src->buf[i] == '%') | |
371 | strbuf_addch(dst, '%'); | |
372 | strbuf_addch(dst, src->buf[i]); | |
373 | } | |
374 | } | |
375 | ||
917c9a71 PH |
376 | size_t strbuf_fread(struct strbuf *sb, size_t size, FILE *f) |
377 | { | |
b449f4cf | 378 | size_t res; |
2fc64700 | 379 | size_t oldalloc = sb->alloc; |
b449f4cf PH |
380 | |
381 | strbuf_grow(sb, size); | |
382 | res = fread(sb->buf + sb->len, 1, size, f); | |
2fc64700 | 383 | if (res > 0) |
b449f4cf | 384 | strbuf_setlen(sb, sb->len + res); |
6651c3f7 | 385 | else if (oldalloc == 0) |
2fc64700 | 386 | strbuf_release(sb); |
b449f4cf | 387 | return res; |
d1df5743 JH |
388 | } |
389 | ||
f1696ee3 | 390 | ssize_t strbuf_read(struct strbuf *sb, int fd, size_t hint) |
b449f4cf PH |
391 | { |
392 | size_t oldlen = sb->len; | |
2fc64700 | 393 | size_t oldalloc = sb->alloc; |
b449f4cf | 394 | |
f1696ee3 | 395 | strbuf_grow(sb, hint ? hint : 8192); |
b449f4cf | 396 | for (;;) { |
3ebbd00c JH |
397 | ssize_t want = sb->alloc - sb->len - 1; |
398 | ssize_t got = read_in_full(fd, sb->buf + sb->len, want); | |
b449f4cf | 399 | |
3ebbd00c | 400 | if (got < 0) { |
2fc64700 RS |
401 | if (oldalloc == 0) |
402 | strbuf_release(sb); | |
403 | else | |
404 | strbuf_setlen(sb, oldlen); | |
b449f4cf PH |
405 | return -1; |
406 | } | |
3ebbd00c JH |
407 | sb->len += got; |
408 | if (got < want) | |
b449f4cf | 409 | break; |
f1696ee3 | 410 | strbuf_grow(sb, 8192); |
b449f4cf PH |
411 | } |
412 | ||
413 | sb->buf[sb->len] = '\0'; | |
414 | return sb->len - oldlen; | |
d1df5743 JH |
415 | } |
416 | ||
b4e04fb6 SB |
417 | ssize_t strbuf_read_once(struct strbuf *sb, int fd, size_t hint) |
418 | { | |
c3ff8f6c | 419 | size_t oldalloc = sb->alloc; |
b4e04fb6 SB |
420 | ssize_t cnt; |
421 | ||
422 | strbuf_grow(sb, hint ? hint : 8192); | |
423 | cnt = xread(fd, sb->buf + sb->len, sb->alloc - sb->len - 1); | |
424 | if (cnt > 0) | |
425 | strbuf_setlen(sb, sb->len + cnt); | |
c3ff8f6c RS |
426 | else if (oldalloc == 0) |
427 | strbuf_release(sb); | |
b4e04fb6 SB |
428 | return cnt; |
429 | } | |
430 | ||
2dac9b56 SB |
431 | ssize_t strbuf_write(struct strbuf *sb, FILE *f) |
432 | { | |
433 | return sb->len ? fwrite(sb->buf, 1, sb->len, f) : 0; | |
434 | } | |
435 | ||
436 | ||
b11b7e13 LT |
437 | #define STRBUF_MAXLINK (2*PATH_MAX) |
438 | ||
439 | int strbuf_readlink(struct strbuf *sb, const char *path, size_t hint) | |
440 | { | |
2fc64700 RS |
441 | size_t oldalloc = sb->alloc; |
442 | ||
b11b7e13 LT |
443 | if (hint < 32) |
444 | hint = 32; | |
445 | ||
446 | while (hint < STRBUF_MAXLINK) { | |
447 | int len; | |
448 | ||
449 | strbuf_grow(sb, hint); | |
450 | len = readlink(path, sb->buf, hint); | |
451 | if (len < 0) { | |
452 | if (errno != ERANGE) | |
453 | break; | |
454 | } else if (len < hint) { | |
455 | strbuf_setlen(sb, len); | |
456 | return 0; | |
457 | } | |
458 | ||
459 | /* .. the buffer was too small - try again */ | |
460 | hint *= 2; | |
461 | } | |
2fc64700 RS |
462 | if (oldalloc == 0) |
463 | strbuf_release(sb); | |
b11b7e13 LT |
464 | return -1; |
465 | } | |
466 | ||
f22a76e9 RS |
467 | int strbuf_getcwd(struct strbuf *sb) |
468 | { | |
469 | size_t oldalloc = sb->alloc; | |
470 | size_t guessed_len = 128; | |
471 | ||
472 | for (;; guessed_len *= 2) { | |
473 | strbuf_grow(sb, guessed_len); | |
474 | if (getcwd(sb->buf, sb->alloc)) { | |
475 | strbuf_setlen(sb, strlen(sb->buf)); | |
476 | return 0; | |
477 | } | |
a54e938e RS |
478 | |
479 | /* | |
480 | * If getcwd(3) is implemented as a syscall that falls | |
481 | * back to a regular lookup using readdir(3) etc. then | |
482 | * we may be able to avoid EACCES by providing enough | |
483 | * space to the syscall as it's not necessarily bound | |
484 | * to the same restrictions as the fallback. | |
485 | */ | |
486 | if (errno == EACCES && guessed_len < PATH_MAX) | |
487 | continue; | |
488 | ||
f22a76e9 RS |
489 | if (errno != ERANGE) |
490 | break; | |
491 | } | |
492 | if (oldalloc == 0) | |
493 | strbuf_release(sb); | |
494 | else | |
495 | strbuf_reset(sb); | |
496 | return -1; | |
497 | } | |
498 | ||
0cc30e0e JK |
499 | #ifdef HAVE_GETDELIM |
500 | int strbuf_getwholeline(struct strbuf *sb, FILE *fp, int term) | |
501 | { | |
502 | ssize_t r; | |
503 | ||
504 | if (feof(fp)) | |
505 | return EOF; | |
506 | ||
507 | strbuf_reset(sb); | |
508 | ||
509 | /* Translate slopbuf to NULL, as we cannot call realloc on it */ | |
510 | if (!sb->alloc) | |
511 | sb->buf = NULL; | |
642956cf | 512 | errno = 0; |
0cc30e0e JK |
513 | r = getdelim(&sb->buf, &sb->alloc, term, fp); |
514 | ||
515 | if (r > 0) { | |
516 | sb->len = r; | |
517 | return 0; | |
518 | } | |
519 | assert(r == -1); | |
520 | ||
521 | /* | |
522 | * Normally we would have called xrealloc, which will try to free | |
523 | * memory and recover. But we have no way to tell getdelim() to do so. | |
524 | * Worse, we cannot try to recover ENOMEM ourselves, because we have | |
525 | * no idea how many bytes were read by getdelim. | |
526 | * | |
527 | * Dying here is reasonable. It mirrors what xrealloc would do on | |
528 | * catastrophic memory failure. We skip the opportunity to free pack | |
529 | * memory and retry, but that's unlikely to help for a malloc small | |
530 | * enough to hold a single line of input, anyway. | |
531 | */ | |
532 | if (errno == ENOMEM) | |
533 | die("Out of memory, getdelim failed"); | |
534 | ||
b7090430 JK |
535 | /* |
536 | * Restore strbuf invariants; if getdelim left us with a NULL pointer, | |
537 | * we can just re-init, but otherwise we should make sure that our | |
538 | * length is empty, and that the result is NUL-terminated. | |
539 | */ | |
0cc30e0e JK |
540 | if (!sb->buf) |
541 | strbuf_init(sb, 0); | |
b7090430 JK |
542 | else |
543 | strbuf_reset(sb); | |
0cc30e0e JK |
544 | return EOF; |
545 | } | |
546 | #else | |
c7e4f0d7 | 547 | int strbuf_getwholeline(struct strbuf *sb, FILE *fp, int term) |
917c9a71 | 548 | { |
d1df5743 | 549 | int ch; |
e6c019d0 | 550 | |
e6c019d0 PH |
551 | if (feof(fp)) |
552 | return EOF; | |
b449f4cf PH |
553 | |
554 | strbuf_reset(sb); | |
82912d1d JK |
555 | flockfile(fp); |
556 | while ((ch = getc_unlocked(fp)) != EOF) { | |
f80c153b JK |
557 | if (!strbuf_avail(sb)) |
558 | strbuf_grow(sb, 1); | |
b449f4cf | 559 | sb->buf[sb->len++] = ch; |
c7e4f0d7 BC |
560 | if (ch == term) |
561 | break; | |
d1df5743 | 562 | } |
82912d1d | 563 | funlockfile(fp); |
e6c019d0 PH |
564 | if (ch == EOF && sb->len == 0) |
565 | return EOF; | |
b449f4cf | 566 | |
b449f4cf | 567 | sb->buf[sb->len] = '\0'; |
e6c019d0 | 568 | return 0; |
d1df5743 | 569 | } |
0cc30e0e | 570 | #endif |
a9390b9f | 571 | |
1a0c8dfd | 572 | static int strbuf_getdelim(struct strbuf *sb, FILE *fp, int term) |
c7e4f0d7 BC |
573 | { |
574 | if (strbuf_getwholeline(sb, fp, term)) | |
575 | return EOF; | |
dce80bd1 JH |
576 | if (sb->buf[sb->len - 1] == term) |
577 | strbuf_setlen(sb, sb->len - 1); | |
c7e4f0d7 BC |
578 | return 0; |
579 | } | |
580 | ||
1a0c8dfd | 581 | int strbuf_getline(struct strbuf *sb, FILE *fp) |
c8aa9fdf JH |
582 | { |
583 | if (strbuf_getwholeline(sb, fp, '\n')) | |
584 | return EOF; | |
585 | if (sb->buf[sb->len - 1] == '\n') { | |
586 | strbuf_setlen(sb, sb->len - 1); | |
587 | if (sb->len && sb->buf[sb->len - 1] == '\r') | |
588 | strbuf_setlen(sb, sb->len - 1); | |
589 | } | |
590 | return 0; | |
591 | } | |
592 | ||
8f309aeb JH |
593 | int strbuf_getline_lf(struct strbuf *sb, FILE *fp) |
594 | { | |
1a0c8dfd | 595 | return strbuf_getdelim(sb, fp, '\n'); |
8f309aeb JH |
596 | } |
597 | ||
598 | int strbuf_getline_nul(struct strbuf *sb, FILE *fp) | |
599 | { | |
1a0c8dfd | 600 | return strbuf_getdelim(sb, fp, '\0'); |
8f309aeb JH |
601 | } |
602 | ||
5e8617f5 TR |
603 | int strbuf_getwholeline_fd(struct strbuf *sb, int fd, int term) |
604 | { | |
605 | strbuf_reset(sb); | |
606 | ||
607 | while (1) { | |
608 | char ch; | |
609 | ssize_t len = xread(fd, &ch, 1); | |
610 | if (len <= 0) | |
611 | return EOF; | |
612 | strbuf_addch(sb, ch); | |
613 | if (ch == term) | |
614 | break; | |
615 | } | |
616 | return 0; | |
617 | } | |
618 | ||
6c8afe49 | 619 | ssize_t strbuf_read_file(struct strbuf *sb, const char *path, size_t hint) |
a9390b9f | 620 | { |
6c8afe49 MH |
621 | int fd; |
622 | ssize_t len; | |
79f0ba15 | 623 | int saved_errno; |
a9390b9f KH |
624 | |
625 | fd = open(path, O_RDONLY); | |
626 | if (fd < 0) | |
627 | return -1; | |
387e7e19 | 628 | len = strbuf_read(sb, fd, hint); |
79f0ba15 | 629 | saved_errno = errno; |
a9390b9f | 630 | close(fd); |
79f0ba15 JK |
631 | if (len < 0) { |
632 | errno = saved_errno; | |
a9390b9f | 633 | return -1; |
79f0ba15 | 634 | } |
a9390b9f KH |
635 | |
636 | return len; | |
637 | } | |
895680f0 JH |
638 | |
639 | void strbuf_add_lines(struct strbuf *out, const char *prefix, | |
640 | const char *buf, size_t size) | |
641 | { | |
eff80a9f | 642 | add_lines(out, prefix, NULL, buf, size); |
895680f0 | 643 | } |
367d20ec | 644 | |
5963c036 MH |
645 | void strbuf_addstr_xml_quoted(struct strbuf *buf, const char *s) |
646 | { | |
647 | while (*s) { | |
648 | size_t len = strcspn(s, "\"<>&"); | |
649 | strbuf_add(buf, s, len); | |
650 | s += len; | |
651 | switch (*s) { | |
652 | case '"': | |
653 | strbuf_addstr(buf, """); | |
654 | break; | |
655 | case '<': | |
656 | strbuf_addstr(buf, "<"); | |
657 | break; | |
658 | case '>': | |
659 | strbuf_addstr(buf, ">"); | |
660 | break; | |
661 | case '&': | |
662 | strbuf_addstr(buf, "&"); | |
663 | break; | |
664 | case 0: | |
665 | return; | |
666 | } | |
667 | s++; | |
668 | } | |
669 | } | |
670 | ||
c505116b JK |
671 | static int is_rfc3986_reserved(char ch) |
672 | { | |
673 | switch (ch) { | |
674 | case '!': case '*': case '\'': case '(': case ')': case ';': | |
675 | case ':': case '@': case '&': case '=': case '+': case '$': | |
676 | case ',': case '/': case '?': case '#': case '[': case ']': | |
677 | return 1; | |
678 | } | |
679 | return 0; | |
680 | } | |
681 | ||
682 | static int is_rfc3986_unreserved(char ch) | |
683 | { | |
684 | return isalnum(ch) || | |
685 | ch == '-' || ch == '_' || ch == '.' || ch == '~'; | |
686 | } | |
687 | ||
ea03a8e1 JH |
688 | static void strbuf_add_urlencode(struct strbuf *sb, const char *s, size_t len, |
689 | int reserved) | |
c505116b JK |
690 | { |
691 | strbuf_grow(sb, len); | |
692 | while (len--) { | |
693 | char ch = *s++; | |
694 | if (is_rfc3986_unreserved(ch) || | |
695 | (!reserved && is_rfc3986_reserved(ch))) | |
696 | strbuf_addch(sb, ch); | |
697 | else | |
4c267f2a | 698 | strbuf_addf(sb, "%%%02x", (unsigned char)ch); |
c505116b JK |
699 | } |
700 | } | |
701 | ||
702 | void strbuf_addstr_urlencode(struct strbuf *sb, const char *s, | |
703 | int reserved) | |
704 | { | |
705 | strbuf_add_urlencode(sb, s, strlen(s), reserved); | |
706 | } | |
9a0a30aa | 707 | |
079b546a AP |
708 | void strbuf_humanise_bytes(struct strbuf *buf, off_t bytes) |
709 | { | |
710 | if (bytes > 1 << 30) { | |
711 | strbuf_addf(buf, "%u.%2.2u GiB", | |
712 | (int)(bytes >> 30), | |
713 | (int)(bytes & ((1 << 30) - 1)) / 10737419); | |
714 | } else if (bytes > 1 << 20) { | |
715 | int x = bytes + 5243; /* for rounding */ | |
716 | strbuf_addf(buf, "%u.%2.2u MiB", | |
717 | x >> 20, ((x & ((1 << 20) - 1)) * 100) >> 20); | |
718 | } else if (bytes > 1 << 10) { | |
719 | int x = bytes + 5; /* for rounding */ | |
720 | strbuf_addf(buf, "%u.%2.2u KiB", | |
721 | x >> 10, ((x & ((1 << 10) - 1)) * 100) >> 10); | |
722 | } else { | |
723 | strbuf_addf(buf, "%u bytes", (int)bytes); | |
724 | } | |
725 | } | |
726 | ||
679eebe2 RS |
727 | void strbuf_add_absolute_path(struct strbuf *sb, const char *path) |
728 | { | |
729 | if (!*path) | |
730 | die("The empty string is not a valid path"); | |
731 | if (!is_absolute_path(path)) { | |
732 | struct stat cwd_stat, pwd_stat; | |
733 | size_t orig_len = sb->len; | |
734 | char *cwd = xgetcwd(); | |
735 | char *pwd = getenv("PWD"); | |
736 | if (pwd && strcmp(pwd, cwd) && | |
737 | !stat(cwd, &cwd_stat) && | |
738 | (cwd_stat.st_dev || cwd_stat.st_ino) && | |
739 | !stat(pwd, &pwd_stat) && | |
740 | pwd_stat.st_dev == cwd_stat.st_dev && | |
741 | pwd_stat.st_ino == cwd_stat.st_ino) | |
742 | strbuf_addstr(sb, pwd); | |
743 | else | |
744 | strbuf_addstr(sb, cwd); | |
745 | if (sb->len > orig_len && !is_dir_sep(sb->buf[sb->len - 1])) | |
746 | strbuf_addch(sb, '/'); | |
747 | free(cwd); | |
748 | } | |
749 | strbuf_addstr(sb, path); | |
750 | } | |
751 | ||
33ad9ddd RS |
752 | void strbuf_add_real_path(struct strbuf *sb, const char *path) |
753 | { | |
754 | if (sb->len) { | |
755 | struct strbuf resolved = STRBUF_INIT; | |
756 | strbuf_realpath(&resolved, path, 1); | |
757 | strbuf_addbuf(sb, &resolved); | |
758 | strbuf_release(&resolved); | |
759 | } else | |
760 | strbuf_realpath(sb, path, 1); | |
761 | } | |
762 | ||
9a0a30aa NTND |
763 | int printf_ln(const char *fmt, ...) |
764 | { | |
765 | int ret; | |
766 | va_list ap; | |
767 | va_start(ap, fmt); | |
768 | ret = vprintf(fmt, ap); | |
769 | va_end(ap); | |
770 | if (ret < 0 || putchar('\n') == EOF) | |
771 | return -1; | |
772 | return ret + 1; | |
773 | } | |
774 | ||
775 | int fprintf_ln(FILE *fp, const char *fmt, ...) | |
776 | { | |
777 | int ret; | |
778 | va_list ap; | |
779 | va_start(ap, fmt); | |
780 | ret = vfprintf(fp, fmt, ap); | |
781 | va_end(ap); | |
782 | if (ret < 0 || putc('\n', fp) == EOF) | |
783 | return -1; | |
784 | return ret + 1; | |
785 | } | |
88d5a6f6 JK |
786 | |
787 | char *xstrdup_tolower(const char *string) | |
788 | { | |
789 | char *result; | |
790 | size_t len, i; | |
791 | ||
792 | len = strlen(string); | |
3733e694 | 793 | result = xmallocz(len); |
88d5a6f6 JK |
794 | for (i = 0; i < len; i++) |
795 | result[i] = tolower(string[i]); | |
796 | result[i] = '\0'; | |
797 | return result; | |
798 | } | |
30a0ddb7 JK |
799 | |
800 | char *xstrvfmt(const char *fmt, va_list ap) | |
801 | { | |
802 | struct strbuf buf = STRBUF_INIT; | |
803 | strbuf_vaddf(&buf, fmt, ap); | |
804 | return strbuf_detach(&buf, NULL); | |
805 | } | |
806 | ||
807 | char *xstrfmt(const char *fmt, ...) | |
808 | { | |
809 | va_list ap; | |
810 | char *ret; | |
811 | ||
812 | va_start(ap, fmt); | |
813 | ret = xstrvfmt(fmt, ap); | |
814 | va_end(ap); | |
815 | ||
816 | return ret; | |
817 | } | |
aa1462cc | 818 | |
c3fbf81a | 819 | void strbuf_addftime(struct strbuf *sb, const char *fmt, const struct tm *tm, |
3b702239 | 820 | int tz_offset, int suppress_tz_name) |
aa1462cc | 821 | { |
c3fbf81a | 822 | struct strbuf munged_fmt = STRBUF_INIT; |
e4f031e3 | 823 | size_t hint = 128; |
aa1462cc JK |
824 | size_t len; |
825 | ||
e4f031e3 JK |
826 | if (!*fmt) |
827 | return; | |
828 | ||
c3fbf81a RS |
829 | /* |
830 | * There is no portable way to pass timezone information to | |
831 | * strftime, so we handle %z and %Z here. | |
832 | */ | |
833 | for (;;) { | |
834 | const char *percent = strchrnul(fmt, '%'); | |
835 | strbuf_add(&munged_fmt, fmt, percent - fmt); | |
836 | if (!*percent) | |
837 | break; | |
838 | fmt = percent + 1; | |
839 | switch (*fmt) { | |
840 | case '%': | |
841 | strbuf_addstr(&munged_fmt, "%%"); | |
842 | fmt++; | |
843 | break; | |
844 | case 'z': | |
845 | strbuf_addf(&munged_fmt, "%+05d", tz_offset); | |
846 | fmt++; | |
847 | break; | |
848 | case 'Z': | |
3b702239 | 849 | if (suppress_tz_name) { |
c3fbf81a RS |
850 | fmt++; |
851 | break; | |
852 | } | |
853 | /* FALLTHROUGH */ | |
854 | default: | |
855 | strbuf_addch(&munged_fmt, '%'); | |
856 | } | |
857 | } | |
858 | fmt = munged_fmt.buf; | |
859 | ||
e4f031e3 | 860 | strbuf_grow(sb, hint); |
aa1462cc JK |
861 | len = strftime(sb->buf + sb->len, sb->alloc - sb->len, fmt, tm); |
862 | ||
863 | if (!len) { | |
864 | /* | |
e4f031e3 JK |
865 | * strftime reports "0" if it could not fit the result in the buffer. |
866 | * Unfortunately, it also reports "0" if the requested time string | |
867 | * takes 0 bytes. So our strategy is to munge the format so that the | |
868 | * output contains at least one character, and then drop the extra | |
869 | * character before returning. | |
aa1462cc | 870 | */ |
c3fbf81a | 871 | strbuf_addch(&munged_fmt, ' '); |
e4f031e3 JK |
872 | while (!len) { |
873 | hint *= 2; | |
874 | strbuf_grow(sb, hint); | |
875 | len = strftime(sb->buf + sb->len, sb->alloc - sb->len, | |
876 | munged_fmt.buf, tm); | |
877 | } | |
e4f031e3 | 878 | len--; /* drop munged space */ |
aa1462cc | 879 | } |
c3fbf81a | 880 | strbuf_release(&munged_fmt); |
e4f031e3 | 881 | strbuf_setlen(sb, sb->len + len); |
aa1462cc | 882 | } |
af49c6d0 | 883 | |
30e677e0 | 884 | void strbuf_add_unique_abbrev(struct strbuf *sb, const struct object_id *oid, |
af49c6d0 JK |
885 | int abbrev_len) |
886 | { | |
887 | int r; | |
888 | strbuf_grow(sb, GIT_SHA1_HEXSZ + 1); | |
aab9583f | 889 | r = find_unique_abbrev_r(sb->buf + sb->len, oid, abbrev_len); |
af49c6d0 JK |
890 | strbuf_setlen(sb, sb->len + r); |
891 | } | |
1ad7c0f6 | 892 | |
63af4a84 TK |
893 | /* |
894 | * Returns the length of a line, without trailing spaces. | |
895 | * | |
896 | * If the line ends with newline, it will be removed too. | |
897 | */ | |
898 | static size_t cleanup(char *line, size_t len) | |
899 | { | |
900 | while (len) { | |
901 | unsigned char c = line[len - 1]; | |
902 | if (!isspace(c)) | |
903 | break; | |
904 | len--; | |
905 | } | |
906 | ||
907 | return len; | |
908 | } | |
909 | ||
910 | /* | |
911 | * Remove empty lines from the beginning and end | |
912 | * and also trailing spaces from every line. | |
913 | * | |
914 | * Turn multiple consecutive empty lines between paragraphs | |
915 | * into just one empty line. | |
916 | * | |
917 | * If the input has only empty lines and spaces, | |
918 | * no output will be produced. | |
919 | * | |
920 | * If last line does not have a newline at the end, one is added. | |
921 | * | |
922 | * Enable skip_comments to skip every line starting with comment | |
923 | * character. | |
924 | */ | |
925 | void strbuf_stripspace(struct strbuf *sb, int skip_comments) | |
926 | { | |
927 | int empties = 0; | |
928 | size_t i, j, len, newlen; | |
929 | char *eol; | |
930 | ||
931 | /* We may have to add a newline. */ | |
932 | strbuf_grow(sb, 1); | |
933 | ||
934 | for (i = j = 0; i < sb->len; i += len, j += newlen) { | |
935 | eol = memchr(sb->buf + i, '\n', sb->len - i); | |
936 | len = eol ? eol - (sb->buf + i) + 1 : sb->len - i; | |
937 | ||
938 | if (skip_comments && len && sb->buf[i] == comment_line_char) { | |
939 | newlen = 0; | |
940 | continue; | |
941 | } | |
942 | newlen = cleanup(sb->buf + i, len); | |
943 | ||
944 | /* Not just an empty line? */ | |
945 | if (newlen) { | |
946 | if (empties > 0 && j > 0) | |
947 | sb->buf[j++] = '\n'; | |
948 | empties = 0; | |
949 | memmove(sb->buf + j, sb->buf + i, newlen); | |
950 | sb->buf[newlen + j++] = '\n'; | |
951 | } else { | |
952 | empties++; | |
953 | } | |
954 | } | |
955 | ||
956 | strbuf_setlen(sb, j); | |
957 | } | |
670c359d JK |
958 | |
959 | int strbuf_normalize_path(struct strbuf *src) | |
960 | { | |
961 | struct strbuf dst = STRBUF_INIT; | |
962 | ||
963 | strbuf_grow(&dst, src->len); | |
964 | if (normalize_path_copy(dst.buf, src->buf) < 0) { | |
965 | strbuf_release(&dst); | |
966 | return -1; | |
967 | } | |
968 | ||
969 | /* | |
970 | * normalize_path does not tell us the new length, so we have to | |
971 | * compute it by looking for the new NUL it placed | |
972 | */ | |
973 | strbuf_setlen(&dst, strlen(dst.buf)); | |
974 | strbuf_swap(src, &dst); | |
975 | strbuf_release(&dst); | |
976 | return 0; | |
977 | } |