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Commit | Line | Data |
---|---|---|
812666c8 | 1 | #include "cache.h" |
a2fab531 | 2 | #include "refs.h" |
d1df5743 | 3 | |
698a68be JH |
4 | int prefixcmp(const char *str, const char *prefix) |
5 | { | |
6 | for (; ; str++, prefix++) | |
7 | if (!*prefix) | |
8 | return 0; | |
9 | else if (*str != *prefix) | |
10 | return (unsigned char)*prefix - (unsigned char)*str; | |
11 | } | |
12 | ||
8cc5b290 AP |
13 | int suffixcmp(const char *str, const char *suffix) |
14 | { | |
15 | int len = strlen(str), suflen = strlen(suffix); | |
16 | if (len < suflen) | |
17 | return -1; | |
18 | else | |
19 | return strcmp(str + len - suflen, suffix); | |
20 | } | |
21 | ||
b315c5c0 PH |
22 | /* |
23 | * Used as the default ->buf value, so that people can always assume | |
24 | * buf is non NULL and ->buf is NUL terminated even for a freshly | |
25 | * initialized strbuf. | |
26 | */ | |
27 | char strbuf_slopbuf[1]; | |
28 | ||
917c9a71 PH |
29 | void strbuf_init(struct strbuf *sb, size_t hint) |
30 | { | |
b315c5c0 PH |
31 | sb->alloc = sb->len = 0; |
32 | sb->buf = strbuf_slopbuf; | |
8c74ef1e | 33 | if (hint) |
f1696ee3 | 34 | strbuf_grow(sb, hint); |
d1df5743 JH |
35 | } |
36 | ||
917c9a71 PH |
37 | void strbuf_release(struct strbuf *sb) |
38 | { | |
b315c5c0 PH |
39 | if (sb->alloc) { |
40 | free(sb->buf); | |
41 | strbuf_init(sb, 0); | |
42 | } | |
b449f4cf PH |
43 | } |
44 | ||
b315c5c0 | 45 | char *strbuf_detach(struct strbuf *sb, size_t *sz) |
917c9a71 | 46 | { |
08ad56f3 JK |
47 | char *res; |
48 | strbuf_grow(sb, 0); | |
49 | res = sb->buf; | |
b315c5c0 PH |
50 | if (sz) |
51 | *sz = sb->len; | |
f1696ee3 | 52 | strbuf_init(sb, 0); |
b449f4cf PH |
53 | return res; |
54 | } | |
55 | ||
917c9a71 PH |
56 | void strbuf_attach(struct strbuf *sb, void *buf, size_t len, size_t alloc) |
57 | { | |
58 | strbuf_release(sb); | |
59 | sb->buf = buf; | |
60 | sb->len = len; | |
61 | sb->alloc = alloc; | |
62 | strbuf_grow(sb, 0); | |
63 | sb->buf[sb->len] = '\0'; | |
64 | } | |
65 | ||
66 | void strbuf_grow(struct strbuf *sb, size_t extra) | |
67 | { | |
8c74ef1e | 68 | int new_buf = !sb->alloc; |
1368f650 JN |
69 | if (unsigned_add_overflows(extra, 1) || |
70 | unsigned_add_overflows(sb->len, extra + 1)) | |
b449f4cf | 71 | die("you want to use way too much memory"); |
8c74ef1e | 72 | if (new_buf) |
b315c5c0 | 73 | sb->buf = NULL; |
b449f4cf | 74 | ALLOC_GROW(sb->buf, sb->len + extra + 1, sb->alloc); |
8c74ef1e TR |
75 | if (new_buf) |
76 | sb->buf[0] = '\0'; | |
b449f4cf PH |
77 | } |
78 | ||
eacd6dc5 LS |
79 | void strbuf_trim(struct strbuf *sb) |
80 | { | |
81 | char *b = sb->buf; | |
82 | while (sb->len > 0 && isspace((unsigned char)sb->buf[sb->len - 1])) | |
83 | sb->len--; | |
84 | while (sb->len > 0 && isspace(*b)) { | |
85 | b++; | |
86 | sb->len--; | |
87 | } | |
88 | memmove(sb->buf, b, sb->len); | |
89 | sb->buf[sb->len] = '\0'; | |
90 | } | |
f1696ee3 PH |
91 | void strbuf_rtrim(struct strbuf *sb) |
92 | { | |
93 | while (sb->len > 0 && isspace((unsigned char)sb->buf[sb->len - 1])) | |
94 | sb->len--; | |
95 | sb->buf[sb->len] = '\0'; | |
96 | } | |
97 | ||
eacd6dc5 LS |
98 | void strbuf_ltrim(struct strbuf *sb) |
99 | { | |
100 | char *b = sb->buf; | |
101 | while (sb->len > 0 && isspace(*b)) { | |
102 | b++; | |
103 | sb->len--; | |
104 | } | |
105 | memmove(sb->buf, b, sb->len); | |
106 | sb->buf[sb->len] = '\0'; | |
107 | } | |
108 | ||
17b73dc6 MH |
109 | struct strbuf **strbuf_split_buf(const char *str, size_t slen, |
110 | int terminator, int max) | |
eacd6dc5 | 111 | { |
b8c2c1fa MH |
112 | struct strbuf **ret = NULL; |
113 | size_t nr = 0, alloc = 0; | |
eacd6dc5 LS |
114 | struct strbuf *t; |
115 | ||
1173bb33 MH |
116 | while (slen) { |
117 | int len = slen; | |
118 | if (max <= 0 || nr + 1 < max) { | |
17b73dc6 | 119 | const char *end = memchr(str, terminator, slen); |
1173bb33 MH |
120 | if (end) |
121 | len = end - str + 1; | |
122 | } | |
eacd6dc5 LS |
123 | t = xmalloc(sizeof(struct strbuf)); |
124 | strbuf_init(t, len); | |
1173bb33 | 125 | strbuf_add(t, str, len); |
b8c2c1fa MH |
126 | ALLOC_GROW(ret, nr + 2, alloc); |
127 | ret[nr++] = t; | |
1173bb33 MH |
128 | str += len; |
129 | slen -= len; | |
eacd6dc5 | 130 | } |
b8c2c1fa MH |
131 | ALLOC_GROW(ret, nr + 1, alloc); /* In case string was empty */ |
132 | ret[nr] = NULL; | |
eacd6dc5 LS |
133 | return ret; |
134 | } | |
135 | ||
136 | void strbuf_list_free(struct strbuf **sbs) | |
137 | { | |
138 | struct strbuf **s = sbs; | |
139 | ||
140 | while (*s) { | |
141 | strbuf_release(*s); | |
142 | free(*s++); | |
143 | } | |
144 | free(sbs); | |
145 | } | |
146 | ||
9b200fd6 | 147 | int strbuf_cmp(const struct strbuf *a, const struct strbuf *b) |
45f66f64 | 148 | { |
8f024655 AR |
149 | int len = a->len < b->len ? a->len: b->len; |
150 | int cmp = memcmp(a->buf, b->buf, len); | |
151 | if (cmp) | |
152 | return cmp; | |
153 | return a->len < b->len ? -1: a->len != b->len; | |
45f66f64 PH |
154 | } |
155 | ||
917c9a71 PH |
156 | void strbuf_splice(struct strbuf *sb, size_t pos, size_t len, |
157 | const void *data, size_t dlen) | |
158 | { | |
1368f650 | 159 | if (unsigned_add_overflows(pos, len)) |
917c9a71 PH |
160 | die("you want to use way too much memory"); |
161 | if (pos > sb->len) | |
162 | die("`pos' is too far after the end of the buffer"); | |
163 | if (pos + len > sb->len) | |
164 | die("`pos + len' is too far after the end of the buffer"); | |
165 | ||
166 | if (dlen >= len) | |
167 | strbuf_grow(sb, dlen - len); | |
168 | memmove(sb->buf + pos + dlen, | |
169 | sb->buf + pos + len, | |
170 | sb->len - pos - len); | |
171 | memcpy(sb->buf + pos, data, dlen); | |
172 | strbuf_setlen(sb, sb->len + dlen - len); | |
173 | } | |
174 | ||
c76689df PH |
175 | void strbuf_insert(struct strbuf *sb, size_t pos, const void *data, size_t len) |
176 | { | |
177 | strbuf_splice(sb, pos, 0, data, len); | |
178 | } | |
179 | ||
180 | void strbuf_remove(struct strbuf *sb, size_t pos, size_t len) | |
181 | { | |
182 | strbuf_splice(sb, pos, len, NULL, 0); | |
183 | } | |
184 | ||
917c9a71 PH |
185 | void strbuf_add(struct strbuf *sb, const void *data, size_t len) |
186 | { | |
b449f4cf PH |
187 | strbuf_grow(sb, len); |
188 | memcpy(sb->buf + sb->len, data, len); | |
189 | strbuf_setlen(sb, sb->len + len); | |
190 | } | |
191 | ||
91db267e RS |
192 | void strbuf_adddup(struct strbuf *sb, size_t pos, size_t len) |
193 | { | |
194 | strbuf_grow(sb, len); | |
195 | memcpy(sb->buf + sb->len, sb->buf + pos, len); | |
196 | strbuf_setlen(sb, sb->len + len); | |
197 | } | |
198 | ||
917c9a71 PH |
199 | void strbuf_addf(struct strbuf *sb, const char *fmt, ...) |
200 | { | |
b449f4cf | 201 | va_list ap; |
ebeb6090 JK |
202 | va_start(ap, fmt); |
203 | strbuf_vaddf(sb, fmt, ap); | |
204 | va_end(ap); | |
205 | } | |
206 | ||
207 | void strbuf_vaddf(struct strbuf *sb, const char *fmt, va_list ap) | |
208 | { | |
209 | int len; | |
210 | va_list cp; | |
b449f4cf | 211 | |
f141bd80 SP |
212 | if (!strbuf_avail(sb)) |
213 | strbuf_grow(sb, 64); | |
ebeb6090 JK |
214 | va_copy(cp, ap); |
215 | len = vsnprintf(sb->buf + sb->len, sb->alloc - sb->len, fmt, cp); | |
216 | va_end(cp); | |
f141bd80 | 217 | if (len < 0) |
ebeb6090 | 218 | die("BUG: your vsnprintf is broken (returned %d)", len); |
f1696ee3 | 219 | if (len > strbuf_avail(sb)) { |
b449f4cf | 220 | strbuf_grow(sb, len); |
b449f4cf | 221 | len = vsnprintf(sb->buf + sb->len, sb->alloc - sb->len, fmt, ap); |
ebeb6090 JK |
222 | if (len > strbuf_avail(sb)) |
223 | die("BUG: your vsnprintf is broken (insatiable)"); | |
b449f4cf PH |
224 | } |
225 | strbuf_setlen(sb, sb->len + len); | |
d1df5743 JH |
226 | } |
227 | ||
c3a670de MC |
228 | void strbuf_expand(struct strbuf *sb, const char *format, expand_fn_t fn, |
229 | void *context) | |
cde75e59 RS |
230 | { |
231 | for (;;) { | |
c3a670de MC |
232 | const char *percent; |
233 | size_t consumed; | |
cde75e59 RS |
234 | |
235 | percent = strchrnul(format, '%'); | |
236 | strbuf_add(sb, format, percent - format); | |
237 | if (!*percent) | |
238 | break; | |
239 | format = percent + 1; | |
240 | ||
0a0416a3 JK |
241 | if (*format == '%') { |
242 | strbuf_addch(sb, '%'); | |
243 | format++; | |
244 | continue; | |
245 | } | |
246 | ||
c3a670de MC |
247 | consumed = fn(sb, format, context); |
248 | if (consumed) | |
249 | format += consumed; | |
250 | else | |
cde75e59 RS |
251 | strbuf_addch(sb, '%'); |
252 | } | |
253 | } | |
254 | ||
9b864e73 RS |
255 | size_t strbuf_expand_dict_cb(struct strbuf *sb, const char *placeholder, |
256 | void *context) | |
257 | { | |
258 | struct strbuf_expand_dict_entry *e = context; | |
259 | size_t len; | |
260 | ||
261 | for (; e->placeholder && (len = strlen(e->placeholder)); e++) { | |
262 | if (!strncmp(placeholder, e->placeholder, len)) { | |
263 | if (e->value) | |
264 | strbuf_addstr(sb, e->value); | |
265 | return len; | |
266 | } | |
267 | } | |
268 | return 0; | |
269 | } | |
270 | ||
361df5df JK |
271 | void strbuf_addbuf_percentquote(struct strbuf *dst, const struct strbuf *src) |
272 | { | |
273 | int i, len = src->len; | |
274 | ||
275 | for (i = 0; i < len; i++) { | |
276 | if (src->buf[i] == '%') | |
277 | strbuf_addch(dst, '%'); | |
278 | strbuf_addch(dst, src->buf[i]); | |
279 | } | |
280 | } | |
281 | ||
917c9a71 PH |
282 | size_t strbuf_fread(struct strbuf *sb, size_t size, FILE *f) |
283 | { | |
b449f4cf | 284 | size_t res; |
2fc64700 | 285 | size_t oldalloc = sb->alloc; |
b449f4cf PH |
286 | |
287 | strbuf_grow(sb, size); | |
288 | res = fread(sb->buf + sb->len, 1, size, f); | |
2fc64700 | 289 | if (res > 0) |
b449f4cf | 290 | strbuf_setlen(sb, sb->len + res); |
6651c3f7 | 291 | else if (oldalloc == 0) |
2fc64700 | 292 | strbuf_release(sb); |
b449f4cf | 293 | return res; |
d1df5743 JH |
294 | } |
295 | ||
f1696ee3 | 296 | ssize_t strbuf_read(struct strbuf *sb, int fd, size_t hint) |
b449f4cf PH |
297 | { |
298 | size_t oldlen = sb->len; | |
2fc64700 | 299 | size_t oldalloc = sb->alloc; |
b449f4cf | 300 | |
f1696ee3 | 301 | strbuf_grow(sb, hint ? hint : 8192); |
b449f4cf PH |
302 | for (;;) { |
303 | ssize_t cnt; | |
304 | ||
b449f4cf PH |
305 | cnt = xread(fd, sb->buf + sb->len, sb->alloc - sb->len - 1); |
306 | if (cnt < 0) { | |
2fc64700 RS |
307 | if (oldalloc == 0) |
308 | strbuf_release(sb); | |
309 | else | |
310 | strbuf_setlen(sb, oldlen); | |
b449f4cf PH |
311 | return -1; |
312 | } | |
313 | if (!cnt) | |
314 | break; | |
315 | sb->len += cnt; | |
f1696ee3 | 316 | strbuf_grow(sb, 8192); |
b449f4cf PH |
317 | } |
318 | ||
319 | sb->buf[sb->len] = '\0'; | |
320 | return sb->len - oldlen; | |
d1df5743 JH |
321 | } |
322 | ||
b11b7e13 LT |
323 | #define STRBUF_MAXLINK (2*PATH_MAX) |
324 | ||
325 | int strbuf_readlink(struct strbuf *sb, const char *path, size_t hint) | |
326 | { | |
2fc64700 RS |
327 | size_t oldalloc = sb->alloc; |
328 | ||
b11b7e13 LT |
329 | if (hint < 32) |
330 | hint = 32; | |
331 | ||
332 | while (hint < STRBUF_MAXLINK) { | |
333 | int len; | |
334 | ||
335 | strbuf_grow(sb, hint); | |
336 | len = readlink(path, sb->buf, hint); | |
337 | if (len < 0) { | |
338 | if (errno != ERANGE) | |
339 | break; | |
340 | } else if (len < hint) { | |
341 | strbuf_setlen(sb, len); | |
342 | return 0; | |
343 | } | |
344 | ||
345 | /* .. the buffer was too small - try again */ | |
346 | hint *= 2; | |
347 | } | |
2fc64700 RS |
348 | if (oldalloc == 0) |
349 | strbuf_release(sb); | |
b11b7e13 LT |
350 | return -1; |
351 | } | |
352 | ||
c7e4f0d7 | 353 | int strbuf_getwholeline(struct strbuf *sb, FILE *fp, int term) |
917c9a71 | 354 | { |
d1df5743 | 355 | int ch; |
e6c019d0 | 356 | |
e6c019d0 PH |
357 | if (feof(fp)) |
358 | return EOF; | |
b449f4cf PH |
359 | |
360 | strbuf_reset(sb); | |
d1df5743 | 361 | while ((ch = fgetc(fp)) != EOF) { |
b449f4cf PH |
362 | strbuf_grow(sb, 1); |
363 | sb->buf[sb->len++] = ch; | |
c7e4f0d7 BC |
364 | if (ch == term) |
365 | break; | |
d1df5743 | 366 | } |
e6c019d0 PH |
367 | if (ch == EOF && sb->len == 0) |
368 | return EOF; | |
b449f4cf | 369 | |
b449f4cf | 370 | sb->buf[sb->len] = '\0'; |
e6c019d0 | 371 | return 0; |
d1df5743 | 372 | } |
a9390b9f | 373 | |
c7e4f0d7 BC |
374 | int strbuf_getline(struct strbuf *sb, FILE *fp, int term) |
375 | { | |
376 | if (strbuf_getwholeline(sb, fp, term)) | |
377 | return EOF; | |
378 | if (sb->buf[sb->len-1] == term) | |
379 | strbuf_setlen(sb, sb->len-1); | |
380 | return 0; | |
381 | } | |
382 | ||
5e8617f5 TR |
383 | int strbuf_getwholeline_fd(struct strbuf *sb, int fd, int term) |
384 | { | |
385 | strbuf_reset(sb); | |
386 | ||
387 | while (1) { | |
388 | char ch; | |
389 | ssize_t len = xread(fd, &ch, 1); | |
390 | if (len <= 0) | |
391 | return EOF; | |
392 | strbuf_addch(sb, ch); | |
393 | if (ch == term) | |
394 | break; | |
395 | } | |
396 | return 0; | |
397 | } | |
398 | ||
387e7e19 | 399 | int strbuf_read_file(struct strbuf *sb, const char *path, size_t hint) |
a9390b9f KH |
400 | { |
401 | int fd, len; | |
402 | ||
403 | fd = open(path, O_RDONLY); | |
404 | if (fd < 0) | |
405 | return -1; | |
387e7e19 | 406 | len = strbuf_read(sb, fd, hint); |
a9390b9f KH |
407 | close(fd); |
408 | if (len < 0) | |
409 | return -1; | |
410 | ||
411 | return len; | |
412 | } | |
895680f0 JH |
413 | |
414 | void strbuf_add_lines(struct strbuf *out, const char *prefix, | |
415 | const char *buf, size_t size) | |
416 | { | |
417 | while (size) { | |
418 | const char *next = memchr(buf, '\n', size); | |
419 | next = next ? (next + 1) : (buf + size); | |
420 | strbuf_addstr(out, prefix); | |
421 | strbuf_add(out, buf, next - buf); | |
422 | size -= next - buf; | |
423 | buf = next; | |
424 | } | |
425 | strbuf_complete_line(out); | |
426 | } | |
367d20ec | 427 | |
5963c036 MH |
428 | void strbuf_addstr_xml_quoted(struct strbuf *buf, const char *s) |
429 | { | |
430 | while (*s) { | |
431 | size_t len = strcspn(s, "\"<>&"); | |
432 | strbuf_add(buf, s, len); | |
433 | s += len; | |
434 | switch (*s) { | |
435 | case '"': | |
436 | strbuf_addstr(buf, """); | |
437 | break; | |
438 | case '<': | |
439 | strbuf_addstr(buf, "<"); | |
440 | break; | |
441 | case '>': | |
442 | strbuf_addstr(buf, ">"); | |
443 | break; | |
444 | case '&': | |
445 | strbuf_addstr(buf, "&"); | |
446 | break; | |
447 | case 0: | |
448 | return; | |
449 | } | |
450 | s++; | |
451 | } | |
452 | } | |
453 | ||
c505116b JK |
454 | static int is_rfc3986_reserved(char ch) |
455 | { | |
456 | switch (ch) { | |
457 | case '!': case '*': case '\'': case '(': case ')': case ';': | |
458 | case ':': case '@': case '&': case '=': case '+': case '$': | |
459 | case ',': case '/': case '?': case '#': case '[': case ']': | |
460 | return 1; | |
461 | } | |
462 | return 0; | |
463 | } | |
464 | ||
465 | static int is_rfc3986_unreserved(char ch) | |
466 | { | |
467 | return isalnum(ch) || | |
468 | ch == '-' || ch == '_' || ch == '.' || ch == '~'; | |
469 | } | |
470 | ||
ea03a8e1 JH |
471 | static void strbuf_add_urlencode(struct strbuf *sb, const char *s, size_t len, |
472 | int reserved) | |
c505116b JK |
473 | { |
474 | strbuf_grow(sb, len); | |
475 | while (len--) { | |
476 | char ch = *s++; | |
477 | if (is_rfc3986_unreserved(ch) || | |
478 | (!reserved && is_rfc3986_reserved(ch))) | |
479 | strbuf_addch(sb, ch); | |
480 | else | |
481 | strbuf_addf(sb, "%%%02x", ch); | |
482 | } | |
483 | } | |
484 | ||
485 | void strbuf_addstr_urlencode(struct strbuf *sb, const char *s, | |
486 | int reserved) | |
487 | { | |
488 | strbuf_add_urlencode(sb, s, strlen(s), reserved); | |
489 | } | |
9a0a30aa | 490 | |
9a0a30aa NTND |
491 | int printf_ln(const char *fmt, ...) |
492 | { | |
493 | int ret; | |
494 | va_list ap; | |
495 | va_start(ap, fmt); | |
496 | ret = vprintf(fmt, ap); | |
497 | va_end(ap); | |
498 | if (ret < 0 || putchar('\n') == EOF) | |
499 | return -1; | |
500 | return ret + 1; | |
501 | } | |
502 | ||
503 | int fprintf_ln(FILE *fp, const char *fmt, ...) | |
504 | { | |
505 | int ret; | |
506 | va_list ap; | |
507 | va_start(ap, fmt); | |
508 | ret = vfprintf(fp, fmt, ap); | |
509 | va_end(ap); | |
510 | if (ret < 0 || putc('\n', fp) == EOF) | |
511 | return -1; | |
512 | return ret + 1; | |
513 | } |