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Commit | Line | Data |
---|---|---|
e93fc5d7 | 1 | #include "git-compat-util.h" |
f394e093 | 2 | #include "gettext.h" |
d88e8106 | 3 | #include "hex-ll.h" |
16b171fd | 4 | #include "strbuf.h" |
f6f77559 | 5 | #include "string-list.h" |
d4241f52 | 6 | #include "utf8.h" |
88c7b4c3 | 7 | #include "date.h" |
d1df5743 | 8 | |
95662315 CC |
9 | int starts_with(const char *str, const char *prefix) |
10 | { | |
11 | for (; ; str++, prefix++) | |
12 | if (!*prefix) | |
13 | return 1; | |
14 | else if (*str != *prefix) | |
15 | return 0; | |
16 | } | |
17 | ||
66b8af3e LS |
18 | int istarts_with(const char *str, const char *prefix) |
19 | { | |
20 | for (; ; str++, prefix++) | |
21 | if (!*prefix) | |
22 | return 1; | |
23 | else if (tolower(*str) != tolower(*prefix)) | |
24 | return 0; | |
25 | } | |
26 | ||
2ec225d3 JK |
27 | int starts_with_mem(const char *str, size_t len, const char *prefix) |
28 | { | |
29 | const char *end = str + len; | |
30 | for (; ; str++, prefix++) { | |
31 | if (!*prefix) | |
32 | return 1; | |
33 | else if (str == end || *str != *prefix) | |
34 | return 0; | |
35 | } | |
36 | } | |
37 | ||
afaef55e CC |
38 | int skip_to_optional_arg_default(const char *str, const char *prefix, |
39 | const char **arg, const char *def) | |
40 | { | |
41 | const char *p; | |
42 | ||
43 | if (!skip_prefix(str, prefix, &p)) | |
44 | return 0; | |
45 | ||
46 | if (!*p) { | |
47 | if (arg) | |
48 | *arg = def; | |
49 | return 1; | |
50 | } | |
51 | ||
52 | if (*p != '=') | |
53 | return 0; | |
54 | ||
55 | if (arg) | |
56 | *arg = p + 1; | |
57 | return 1; | |
58 | } | |
59 | ||
b315c5c0 PH |
60 | /* |
61 | * Used as the default ->buf value, so that people can always assume | |
62 | * buf is non NULL and ->buf is NUL terminated even for a freshly | |
63 | * initialized strbuf. | |
64 | */ | |
65 | char strbuf_slopbuf[1]; | |
66 | ||
917c9a71 PH |
67 | void strbuf_init(struct strbuf *sb, size_t hint) |
68 | { | |
5726a6b4 ÆAB |
69 | struct strbuf blank = STRBUF_INIT; |
70 | memcpy(sb, &blank, sizeof(*sb)); | |
8c74ef1e | 71 | if (hint) |
f1696ee3 | 72 | strbuf_grow(sb, hint); |
d1df5743 JH |
73 | } |
74 | ||
917c9a71 PH |
75 | void strbuf_release(struct strbuf *sb) |
76 | { | |
b315c5c0 PH |
77 | if (sb->alloc) { |
78 | free(sb->buf); | |
79 | strbuf_init(sb, 0); | |
80 | } | |
b449f4cf PH |
81 | } |
82 | ||
b315c5c0 | 83 | char *strbuf_detach(struct strbuf *sb, size_t *sz) |
917c9a71 | 84 | { |
08ad56f3 JK |
85 | char *res; |
86 | strbuf_grow(sb, 0); | |
87 | res = sb->buf; | |
b315c5c0 PH |
88 | if (sz) |
89 | *sz = sb->len; | |
f1696ee3 | 90 | strbuf_init(sb, 0); |
b449f4cf PH |
91 | return res; |
92 | } | |
93 | ||
917c9a71 PH |
94 | void strbuf_attach(struct strbuf *sb, void *buf, size_t len, size_t alloc) |
95 | { | |
96 | strbuf_release(sb); | |
97 | sb->buf = buf; | |
98 | sb->len = len; | |
99 | sb->alloc = alloc; | |
100 | strbuf_grow(sb, 0); | |
101 | sb->buf[sb->len] = '\0'; | |
102 | } | |
103 | ||
104 | void strbuf_grow(struct strbuf *sb, size_t extra) | |
105 | { | |
8c74ef1e | 106 | int new_buf = !sb->alloc; |
1368f650 JN |
107 | if (unsigned_add_overflows(extra, 1) || |
108 | unsigned_add_overflows(sb->len, extra + 1)) | |
b449f4cf | 109 | die("you want to use way too much memory"); |
8c74ef1e | 110 | if (new_buf) |
b315c5c0 | 111 | sb->buf = NULL; |
b449f4cf | 112 | ALLOC_GROW(sb->buf, sb->len + extra + 1, sb->alloc); |
8c74ef1e TR |
113 | if (new_buf) |
114 | sb->buf[0] = '\0'; | |
b449f4cf PH |
115 | } |
116 | ||
eacd6dc5 LS |
117 | void strbuf_trim(struct strbuf *sb) |
118 | { | |
3bb55e8a BG |
119 | strbuf_rtrim(sb); |
120 | strbuf_ltrim(sb); | |
eacd6dc5 | 121 | } |
c64a8d20 | 122 | |
f1696ee3 PH |
123 | void strbuf_rtrim(struct strbuf *sb) |
124 | { | |
125 | while (sb->len > 0 && isspace((unsigned char)sb->buf[sb->len - 1])) | |
126 | sb->len--; | |
127 | sb->buf[sb->len] = '\0'; | |
128 | } | |
129 | ||
c64a8d20 NTND |
130 | void strbuf_trim_trailing_dir_sep(struct strbuf *sb) |
131 | { | |
132 | while (sb->len > 0 && is_dir_sep((unsigned char)sb->buf[sb->len - 1])) | |
133 | sb->len--; | |
134 | sb->buf[sb->len] = '\0'; | |
135 | } | |
136 | ||
f9573628 PK |
137 | void strbuf_trim_trailing_newline(struct strbuf *sb) |
138 | { | |
139 | if (sb->len > 0 && sb->buf[sb->len - 1] == '\n') { | |
140 | if (--sb->len > 0 && sb->buf[sb->len - 1] == '\r') | |
141 | --sb->len; | |
142 | sb->buf[sb->len] = '\0'; | |
143 | } | |
144 | } | |
145 | ||
eacd6dc5 LS |
146 | void strbuf_ltrim(struct strbuf *sb) |
147 | { | |
148 | char *b = sb->buf; | |
149 | while (sb->len > 0 && isspace(*b)) { | |
150 | b++; | |
151 | sb->len--; | |
152 | } | |
153 | memmove(sb->buf, b, sb->len); | |
154 | sb->buf[sb->len] = '\0'; | |
155 | } | |
156 | ||
d4241f52 JK |
157 | int strbuf_reencode(struct strbuf *sb, const char *from, const char *to) |
158 | { | |
159 | char *out; | |
c7d017d7 | 160 | size_t len; |
d4241f52 JK |
161 | |
162 | if (same_encoding(from, to)) | |
163 | return 0; | |
164 | ||
165 | out = reencode_string_len(sb->buf, sb->len, to, from, &len); | |
166 | if (!out) | |
167 | return -1; | |
168 | ||
169 | strbuf_attach(sb, out, len, len); | |
170 | return 0; | |
171 | } | |
172 | ||
ffb20ce1 JK |
173 | void strbuf_tolower(struct strbuf *sb) |
174 | { | |
175 | char *p = sb->buf, *end = sb->buf + sb->len; | |
176 | for (; p < end; p++) | |
177 | *p = tolower(*p); | |
178 | } | |
179 | ||
17b73dc6 MH |
180 | struct strbuf **strbuf_split_buf(const char *str, size_t slen, |
181 | int terminator, int max) | |
eacd6dc5 | 182 | { |
b8c2c1fa MH |
183 | struct strbuf **ret = NULL; |
184 | size_t nr = 0, alloc = 0; | |
eacd6dc5 LS |
185 | struct strbuf *t; |
186 | ||
1173bb33 MH |
187 | while (slen) { |
188 | int len = slen; | |
189 | if (max <= 0 || nr + 1 < max) { | |
17b73dc6 | 190 | const char *end = memchr(str, terminator, slen); |
1173bb33 MH |
191 | if (end) |
192 | len = end - str + 1; | |
193 | } | |
eacd6dc5 LS |
194 | t = xmalloc(sizeof(struct strbuf)); |
195 | strbuf_init(t, len); | |
1173bb33 | 196 | strbuf_add(t, str, len); |
b8c2c1fa MH |
197 | ALLOC_GROW(ret, nr + 2, alloc); |
198 | ret[nr++] = t; | |
1173bb33 MH |
199 | str += len; |
200 | slen -= len; | |
eacd6dc5 | 201 | } |
b8c2c1fa MH |
202 | ALLOC_GROW(ret, nr + 1, alloc); /* In case string was empty */ |
203 | ret[nr] = NULL; | |
eacd6dc5 LS |
204 | return ret; |
205 | } | |
206 | ||
f6f77559 EN |
207 | void strbuf_add_separated_string_list(struct strbuf *str, |
208 | const char *sep, | |
209 | struct string_list *slist) | |
210 | { | |
211 | struct string_list_item *item; | |
212 | int sep_needed = 0; | |
213 | ||
214 | for_each_string_list_item(item, slist) { | |
215 | if (sep_needed) | |
216 | strbuf_addstr(str, sep); | |
217 | strbuf_addstr(str, item->string); | |
218 | sep_needed = 1; | |
219 | } | |
220 | } | |
221 | ||
eacd6dc5 LS |
222 | void strbuf_list_free(struct strbuf **sbs) |
223 | { | |
224 | struct strbuf **s = sbs; | |
225 | ||
f3a96807 AH |
226 | if (!s) |
227 | return; | |
eacd6dc5 LS |
228 | while (*s) { |
229 | strbuf_release(*s); | |
230 | free(*s++); | |
231 | } | |
232 | free(sbs); | |
233 | } | |
234 | ||
9b200fd6 | 235 | int strbuf_cmp(const struct strbuf *a, const struct strbuf *b) |
45f66f64 | 236 | { |
26114c00 | 237 | size_t len = a->len < b->len ? a->len: b->len; |
8f024655 AR |
238 | int cmp = memcmp(a->buf, b->buf, len); |
239 | if (cmp) | |
240 | return cmp; | |
241 | return a->len < b->len ? -1: a->len != b->len; | |
45f66f64 PH |
242 | } |
243 | ||
917c9a71 PH |
244 | void strbuf_splice(struct strbuf *sb, size_t pos, size_t len, |
245 | const void *data, size_t dlen) | |
246 | { | |
1368f650 | 247 | if (unsigned_add_overflows(pos, len)) |
917c9a71 PH |
248 | die("you want to use way too much memory"); |
249 | if (pos > sb->len) | |
250 | die("`pos' is too far after the end of the buffer"); | |
251 | if (pos + len > sb->len) | |
252 | die("`pos + len' is too far after the end of the buffer"); | |
253 | ||
254 | if (dlen >= len) | |
255 | strbuf_grow(sb, dlen - len); | |
256 | memmove(sb->buf + pos + dlen, | |
257 | sb->buf + pos + len, | |
258 | sb->len - pos - len); | |
259 | memcpy(sb->buf + pos, data, dlen); | |
260 | strbuf_setlen(sb, sb->len + dlen - len); | |
261 | } | |
262 | ||
c76689df PH |
263 | void strbuf_insert(struct strbuf *sb, size_t pos, const void *data, size_t len) |
264 | { | |
265 | strbuf_splice(sb, pos, 0, data, len); | |
266 | } | |
267 | ||
5ef264db PSU |
268 | void strbuf_vinsertf(struct strbuf *sb, size_t pos, const char *fmt, va_list ap) |
269 | { | |
270 | int len, len2; | |
271 | char save; | |
272 | va_list cp; | |
273 | ||
274 | if (pos > sb->len) | |
275 | die("`pos' is too far after the end of the buffer"); | |
276 | va_copy(cp, ap); | |
277 | len = vsnprintf(sb->buf + sb->len, 0, fmt, cp); | |
278 | va_end(cp); | |
279 | if (len < 0) | |
280 | BUG("your vsnprintf is broken (returned %d)", len); | |
281 | if (!len) | |
282 | return; /* nothing to do */ | |
283 | if (unsigned_add_overflows(sb->len, len)) | |
284 | die("you want to use way too much memory"); | |
285 | strbuf_grow(sb, len); | |
286 | memmove(sb->buf + pos + len, sb->buf + pos, sb->len - pos); | |
287 | /* vsnprintf() will append a NUL, overwriting one of our characters */ | |
288 | save = sb->buf[pos + len]; | |
289 | len2 = vsnprintf(sb->buf + pos, len + 1, fmt, ap); | |
290 | sb->buf[pos + len] = save; | |
291 | if (len2 != len) | |
292 | BUG("your vsnprintf is broken (returns inconsistent lengths)"); | |
293 | strbuf_setlen(sb, sb->len + len); | |
294 | } | |
295 | ||
296 | void strbuf_insertf(struct strbuf *sb, size_t pos, const char *fmt, ...) | |
297 | { | |
298 | va_list ap; | |
299 | va_start(ap, fmt); | |
300 | strbuf_vinsertf(sb, pos, fmt, ap); | |
301 | va_end(ap); | |
302 | } | |
303 | ||
c76689df PH |
304 | void strbuf_remove(struct strbuf *sb, size_t pos, size_t len) |
305 | { | |
a8342a41 | 306 | strbuf_splice(sb, pos, len, "", 0); |
c76689df PH |
307 | } |
308 | ||
917c9a71 PH |
309 | void strbuf_add(struct strbuf *sb, const void *data, size_t len) |
310 | { | |
b449f4cf PH |
311 | strbuf_grow(sb, len); |
312 | memcpy(sb->buf + sb->len, data, len); | |
313 | strbuf_setlen(sb, sb->len + len); | |
314 | } | |
315 | ||
31471ba2 RS |
316 | void strbuf_addbuf(struct strbuf *sb, const struct strbuf *sb2) |
317 | { | |
318 | strbuf_grow(sb, sb2->len); | |
319 | memcpy(sb->buf + sb->len, sb2->buf, sb2->len); | |
320 | strbuf_setlen(sb, sb->len + sb2->len); | |
321 | } | |
322 | ||
e71c4a88 PSU |
323 | const char *strbuf_join_argv(struct strbuf *buf, |
324 | int argc, const char **argv, char delim) | |
325 | { | |
326 | if (!argc) | |
327 | return buf->buf; | |
328 | ||
329 | strbuf_addstr(buf, *argv); | |
330 | while (--argc) { | |
331 | strbuf_addch(buf, delim); | |
332 | strbuf_addstr(buf, *(++argv)); | |
333 | } | |
334 | ||
335 | return buf->buf; | |
336 | } | |
337 | ||
d07235a0 RS |
338 | void strbuf_addchars(struct strbuf *sb, int c, size_t n) |
339 | { | |
340 | strbuf_grow(sb, n); | |
341 | memset(sb->buf + sb->len, c, n); | |
342 | strbuf_setlen(sb, sb->len + n); | |
343 | } | |
344 | ||
917c9a71 PH |
345 | void strbuf_addf(struct strbuf *sb, const char *fmt, ...) |
346 | { | |
b449f4cf | 347 | va_list ap; |
ebeb6090 JK |
348 | va_start(ap, fmt); |
349 | strbuf_vaddf(sb, fmt, ap); | |
350 | va_end(ap); | |
351 | } | |
352 | ||
eff80a9f | 353 | static void add_lines(struct strbuf *out, |
db7f9309 JK |
354 | const char *prefix, |
355 | const char *buf, size_t size, | |
356 | int space_after_prefix) | |
eff80a9f JH |
357 | { |
358 | while (size) { | |
eff80a9f JH |
359 | const char *next = memchr(buf, '\n', size); |
360 | next = next ? (next + 1) : (buf + size); | |
361 | ||
eff80a9f | 362 | strbuf_addstr(out, prefix); |
db7f9309 JK |
363 | if (space_after_prefix && buf[0] != '\n' && buf[0] != '\t') |
364 | strbuf_addch(out, ' '); | |
eff80a9f JH |
365 | strbuf_add(out, buf, next - buf); |
366 | size -= next - buf; | |
367 | buf = next; | |
368 | } | |
369 | strbuf_complete_line(out); | |
370 | } | |
371 | ||
787cb8a4 | 372 | void strbuf_add_commented_lines(struct strbuf *out, const char *buf, |
a1bb146a | 373 | size_t size, const char *comment_prefix) |
eff80a9f | 374 | { |
a1bb146a | 375 | add_lines(out, comment_prefix, buf, size, 1); |
eff80a9f JH |
376 | } |
377 | ||
3a35d962 | 378 | void strbuf_commented_addf(struct strbuf *sb, const char *comment_prefix, |
787cb8a4 | 379 | const char *fmt, ...) |
eff80a9f JH |
380 | { |
381 | va_list params; | |
382 | struct strbuf buf = STRBUF_INIT; | |
383 | int incomplete_line = sb->len && sb->buf[sb->len - 1] != '\n'; | |
384 | ||
385 | va_start(params, fmt); | |
386 | strbuf_vaddf(&buf, fmt, params); | |
387 | va_end(params); | |
388 | ||
a1bb146a | 389 | strbuf_add_commented_lines(sb, buf.buf, buf.len, comment_prefix); |
eff80a9f JH |
390 | if (incomplete_line) |
391 | sb->buf[--sb->len] = '\0'; | |
392 | ||
393 | strbuf_release(&buf); | |
394 | } | |
395 | ||
ebeb6090 JK |
396 | void strbuf_vaddf(struct strbuf *sb, const char *fmt, va_list ap) |
397 | { | |
398 | int len; | |
399 | va_list cp; | |
b449f4cf | 400 | |
f141bd80 SP |
401 | if (!strbuf_avail(sb)) |
402 | strbuf_grow(sb, 64); | |
ebeb6090 JK |
403 | va_copy(cp, ap); |
404 | len = vsnprintf(sb->buf + sb->len, sb->alloc - sb->len, fmt, cp); | |
405 | va_end(cp); | |
f141bd80 | 406 | if (len < 0) |
033abf97 | 407 | BUG("your vsnprintf is broken (returned %d)", len); |
f1696ee3 | 408 | if (len > strbuf_avail(sb)) { |
b449f4cf | 409 | strbuf_grow(sb, len); |
b449f4cf | 410 | len = vsnprintf(sb->buf + sb->len, sb->alloc - sb->len, fmt, ap); |
ebeb6090 | 411 | if (len > strbuf_avail(sb)) |
033abf97 | 412 | BUG("your vsnprintf is broken (insatiable)"); |
b449f4cf PH |
413 | } |
414 | strbuf_setlen(sb, sb->len + len); | |
d1df5743 JH |
415 | } |
416 | ||
44ccb337 | 417 | int strbuf_expand_step(struct strbuf *sb, const char **formatp) |
cde75e59 | 418 | { |
44ccb337 RS |
419 | const char *format = *formatp; |
420 | const char *percent = strchrnul(format, '%'); | |
0a0416a3 | 421 | |
44ccb337 RS |
422 | strbuf_add(sb, format, percent - format); |
423 | if (!*percent) | |
424 | return 0; | |
425 | *formatp = percent + 1; | |
426 | return 1; | |
cde75e59 RS |
427 | } |
428 | ||
4416b86c | 429 | size_t strbuf_expand_literal(struct strbuf *sb, const char *placeholder) |
fd2015b3 AW |
430 | { |
431 | int ch; | |
432 | ||
433 | switch (placeholder[0]) { | |
434 | case 'n': /* newline */ | |
435 | strbuf_addch(sb, '\n'); | |
436 | return 1; | |
437 | case 'x': | |
438 | /* %x00 == NUL, %x0a == LF, etc. */ | |
439 | ch = hex2chr(placeholder + 1); | |
440 | if (ch < 0) | |
441 | return 0; | |
442 | strbuf_addch(sb, ch); | |
443 | return 3; | |
444 | } | |
445 | return 0; | |
446 | } | |
447 | ||
361df5df JK |
448 | void strbuf_addbuf_percentquote(struct strbuf *dst, const struct strbuf *src) |
449 | { | |
26114c00 | 450 | size_t i, len = src->len; |
361df5df JK |
451 | |
452 | for (i = 0; i < len; i++) { | |
453 | if (src->buf[i] == '%') | |
454 | strbuf_addch(dst, '%'); | |
455 | strbuf_addch(dst, src->buf[i]); | |
456 | } | |
457 | } | |
458 | ||
b44d0118 | 459 | #define URL_UNSAFE_CHARS " <>\"%{}|\\^`:?#[]@!$&'()*+,;=" |
46fd7b39 | 460 | |
b44d0118 | 461 | void strbuf_add_percentencode(struct strbuf *dst, const char *src, int flags) |
46fd7b39 | 462 | { |
463 | size_t i, len = strlen(src); | |
464 | ||
465 | for (i = 0; i < len; i++) { | |
466 | unsigned char ch = src[i]; | |
b44d0118 | 467 | if (ch <= 0x1F || ch >= 0x7F || |
468 | (ch == '/' && (flags & STRBUF_ENCODE_SLASH)) || | |
469 | strchr(URL_UNSAFE_CHARS, ch)) | |
46fd7b39 | 470 | strbuf_addf(dst, "%%%02X", (unsigned char)ch); |
471 | else | |
472 | strbuf_addch(dst, ch); | |
473 | } | |
474 | } | |
475 | ||
917c9a71 PH |
476 | size_t strbuf_fread(struct strbuf *sb, size_t size, FILE *f) |
477 | { | |
b449f4cf | 478 | size_t res; |
2fc64700 | 479 | size_t oldalloc = sb->alloc; |
b449f4cf PH |
480 | |
481 | strbuf_grow(sb, size); | |
482 | res = fread(sb->buf + sb->len, 1, size, f); | |
2fc64700 | 483 | if (res > 0) |
b449f4cf | 484 | strbuf_setlen(sb, sb->len + res); |
6651c3f7 | 485 | else if (oldalloc == 0) |
2fc64700 | 486 | strbuf_release(sb); |
b449f4cf | 487 | return res; |
d1df5743 JH |
488 | } |
489 | ||
f1696ee3 | 490 | ssize_t strbuf_read(struct strbuf *sb, int fd, size_t hint) |
b449f4cf PH |
491 | { |
492 | size_t oldlen = sb->len; | |
2fc64700 | 493 | size_t oldalloc = sb->alloc; |
b449f4cf | 494 | |
f1696ee3 | 495 | strbuf_grow(sb, hint ? hint : 8192); |
b449f4cf | 496 | for (;;) { |
3ebbd00c JH |
497 | ssize_t want = sb->alloc - sb->len - 1; |
498 | ssize_t got = read_in_full(fd, sb->buf + sb->len, want); | |
b449f4cf | 499 | |
3ebbd00c | 500 | if (got < 0) { |
2fc64700 RS |
501 | if (oldalloc == 0) |
502 | strbuf_release(sb); | |
503 | else | |
504 | strbuf_setlen(sb, oldlen); | |
b449f4cf PH |
505 | return -1; |
506 | } | |
3ebbd00c JH |
507 | sb->len += got; |
508 | if (got < want) | |
b449f4cf | 509 | break; |
f1696ee3 | 510 | strbuf_grow(sb, 8192); |
b449f4cf PH |
511 | } |
512 | ||
513 | sb->buf[sb->len] = '\0'; | |
514 | return sb->len - oldlen; | |
d1df5743 JH |
515 | } |
516 | ||
b4e04fb6 SB |
517 | ssize_t strbuf_read_once(struct strbuf *sb, int fd, size_t hint) |
518 | { | |
c3ff8f6c | 519 | size_t oldalloc = sb->alloc; |
b4e04fb6 SB |
520 | ssize_t cnt; |
521 | ||
522 | strbuf_grow(sb, hint ? hint : 8192); | |
523 | cnt = xread(fd, sb->buf + sb->len, sb->alloc - sb->len - 1); | |
524 | if (cnt > 0) | |
525 | strbuf_setlen(sb, sb->len + cnt); | |
c3ff8f6c RS |
526 | else if (oldalloc == 0) |
527 | strbuf_release(sb); | |
b4e04fb6 SB |
528 | return cnt; |
529 | } | |
530 | ||
2dac9b56 SB |
531 | ssize_t strbuf_write(struct strbuf *sb, FILE *f) |
532 | { | |
533 | return sb->len ? fwrite(sb->buf, 1, sb->len, f) : 0; | |
534 | } | |
535 | ||
b11b7e13 LT |
536 | #define STRBUF_MAXLINK (2*PATH_MAX) |
537 | ||
538 | int strbuf_readlink(struct strbuf *sb, const char *path, size_t hint) | |
539 | { | |
2fc64700 RS |
540 | size_t oldalloc = sb->alloc; |
541 | ||
b11b7e13 LT |
542 | if (hint < 32) |
543 | hint = 32; | |
544 | ||
545 | while (hint < STRBUF_MAXLINK) { | |
f3e76ed2 | 546 | ssize_t len; |
b11b7e13 LT |
547 | |
548 | strbuf_grow(sb, hint); | |
549 | len = readlink(path, sb->buf, hint); | |
550 | if (len < 0) { | |
551 | if (errno != ERANGE) | |
552 | break; | |
553 | } else if (len < hint) { | |
554 | strbuf_setlen(sb, len); | |
555 | return 0; | |
556 | } | |
557 | ||
558 | /* .. the buffer was too small - try again */ | |
559 | hint *= 2; | |
560 | } | |
2fc64700 RS |
561 | if (oldalloc == 0) |
562 | strbuf_release(sb); | |
b11b7e13 LT |
563 | return -1; |
564 | } | |
565 | ||
f22a76e9 RS |
566 | int strbuf_getcwd(struct strbuf *sb) |
567 | { | |
568 | size_t oldalloc = sb->alloc; | |
569 | size_t guessed_len = 128; | |
570 | ||
571 | for (;; guessed_len *= 2) { | |
572 | strbuf_grow(sb, guessed_len); | |
573 | if (getcwd(sb->buf, sb->alloc)) { | |
574 | strbuf_setlen(sb, strlen(sb->buf)); | |
575 | return 0; | |
576 | } | |
a54e938e RS |
577 | |
578 | /* | |
579 | * If getcwd(3) is implemented as a syscall that falls | |
580 | * back to a regular lookup using readdir(3) etc. then | |
581 | * we may be able to avoid EACCES by providing enough | |
582 | * space to the syscall as it's not necessarily bound | |
583 | * to the same restrictions as the fallback. | |
584 | */ | |
585 | if (errno == EACCES && guessed_len < PATH_MAX) | |
586 | continue; | |
587 | ||
f22a76e9 RS |
588 | if (errno != ERANGE) |
589 | break; | |
590 | } | |
591 | if (oldalloc == 0) | |
592 | strbuf_release(sb); | |
593 | else | |
594 | strbuf_reset(sb); | |
595 | return -1; | |
596 | } | |
597 | ||
0cc30e0e JK |
598 | #ifdef HAVE_GETDELIM |
599 | int strbuf_getwholeline(struct strbuf *sb, FILE *fp, int term) | |
600 | { | |
601 | ssize_t r; | |
602 | ||
603 | if (feof(fp)) | |
604 | return EOF; | |
605 | ||
606 | strbuf_reset(sb); | |
607 | ||
608 | /* Translate slopbuf to NULL, as we cannot call realloc on it */ | |
609 | if (!sb->alloc) | |
610 | sb->buf = NULL; | |
642956cf | 611 | errno = 0; |
0cc30e0e JK |
612 | r = getdelim(&sb->buf, &sb->alloc, term, fp); |
613 | ||
614 | if (r > 0) { | |
615 | sb->len = r; | |
616 | return 0; | |
617 | } | |
618 | assert(r == -1); | |
619 | ||
620 | /* | |
621 | * Normally we would have called xrealloc, which will try to free | |
622 | * memory and recover. But we have no way to tell getdelim() to do so. | |
623 | * Worse, we cannot try to recover ENOMEM ourselves, because we have | |
624 | * no idea how many bytes were read by getdelim. | |
625 | * | |
626 | * Dying here is reasonable. It mirrors what xrealloc would do on | |
627 | * catastrophic memory failure. We skip the opportunity to free pack | |
628 | * memory and retry, but that's unlikely to help for a malloc small | |
629 | * enough to hold a single line of input, anyway. | |
630 | */ | |
631 | if (errno == ENOMEM) | |
632 | die("Out of memory, getdelim failed"); | |
633 | ||
b7090430 JK |
634 | /* |
635 | * Restore strbuf invariants; if getdelim left us with a NULL pointer, | |
636 | * we can just re-init, but otherwise we should make sure that our | |
637 | * length is empty, and that the result is NUL-terminated. | |
638 | */ | |
0cc30e0e JK |
639 | if (!sb->buf) |
640 | strbuf_init(sb, 0); | |
b7090430 JK |
641 | else |
642 | strbuf_reset(sb); | |
0cc30e0e JK |
643 | return EOF; |
644 | } | |
645 | #else | |
c7e4f0d7 | 646 | int strbuf_getwholeline(struct strbuf *sb, FILE *fp, int term) |
917c9a71 | 647 | { |
d1df5743 | 648 | int ch; |
e6c019d0 | 649 | |
e6c019d0 PH |
650 | if (feof(fp)) |
651 | return EOF; | |
b449f4cf PH |
652 | |
653 | strbuf_reset(sb); | |
82912d1d JK |
654 | flockfile(fp); |
655 | while ((ch = getc_unlocked(fp)) != EOF) { | |
f80c153b JK |
656 | if (!strbuf_avail(sb)) |
657 | strbuf_grow(sb, 1); | |
b449f4cf | 658 | sb->buf[sb->len++] = ch; |
c7e4f0d7 BC |
659 | if (ch == term) |
660 | break; | |
d1df5743 | 661 | } |
82912d1d | 662 | funlockfile(fp); |
e6c019d0 PH |
663 | if (ch == EOF && sb->len == 0) |
664 | return EOF; | |
b449f4cf | 665 | |
b449f4cf | 666 | sb->buf[sb->len] = '\0'; |
e6c019d0 | 667 | return 0; |
d1df5743 | 668 | } |
0cc30e0e | 669 | #endif |
a9390b9f | 670 | |
bd021f39 PS |
671 | int strbuf_appendwholeline(struct strbuf *sb, FILE *fp, int term) |
672 | { | |
673 | struct strbuf line = STRBUF_INIT; | |
674 | if (strbuf_getwholeline(&line, fp, term)) | |
675 | return EOF; | |
676 | strbuf_addbuf(sb, &line); | |
677 | strbuf_release(&line); | |
678 | return 0; | |
679 | } | |
680 | ||
1a0c8dfd | 681 | static int strbuf_getdelim(struct strbuf *sb, FILE *fp, int term) |
c7e4f0d7 BC |
682 | { |
683 | if (strbuf_getwholeline(sb, fp, term)) | |
684 | return EOF; | |
dce80bd1 JH |
685 | if (sb->buf[sb->len - 1] == term) |
686 | strbuf_setlen(sb, sb->len - 1); | |
c7e4f0d7 BC |
687 | return 0; |
688 | } | |
689 | ||
af35e56b | 690 | int strbuf_getdelim_strip_crlf(struct strbuf *sb, FILE *fp, int term) |
c8aa9fdf | 691 | { |
af35e56b | 692 | if (strbuf_getwholeline(sb, fp, term)) |
c8aa9fdf | 693 | return EOF; |
af35e56b | 694 | if (term == '\n' && sb->buf[sb->len - 1] == '\n') { |
c8aa9fdf JH |
695 | strbuf_setlen(sb, sb->len - 1); |
696 | if (sb->len && sb->buf[sb->len - 1] == '\r') | |
697 | strbuf_setlen(sb, sb->len - 1); | |
698 | } | |
699 | return 0; | |
700 | } | |
701 | ||
af35e56b PS |
702 | int strbuf_getline(struct strbuf *sb, FILE *fp) |
703 | { | |
704 | return strbuf_getdelim_strip_crlf(sb, fp, '\n'); | |
705 | } | |
706 | ||
8f309aeb JH |
707 | int strbuf_getline_lf(struct strbuf *sb, FILE *fp) |
708 | { | |
1a0c8dfd | 709 | return strbuf_getdelim(sb, fp, '\n'); |
8f309aeb JH |
710 | } |
711 | ||
712 | int strbuf_getline_nul(struct strbuf *sb, FILE *fp) | |
713 | { | |
1a0c8dfd | 714 | return strbuf_getdelim(sb, fp, '\0'); |
8f309aeb JH |
715 | } |
716 | ||
5e8617f5 TR |
717 | int strbuf_getwholeline_fd(struct strbuf *sb, int fd, int term) |
718 | { | |
719 | strbuf_reset(sb); | |
720 | ||
721 | while (1) { | |
722 | char ch; | |
723 | ssize_t len = xread(fd, &ch, 1); | |
724 | if (len <= 0) | |
725 | return EOF; | |
726 | strbuf_addch(sb, ch); | |
727 | if (ch == term) | |
728 | break; | |
729 | } | |
730 | return 0; | |
731 | } | |
732 | ||
6c8afe49 | 733 | ssize_t strbuf_read_file(struct strbuf *sb, const char *path, size_t hint) |
a9390b9f | 734 | { |
6c8afe49 MH |
735 | int fd; |
736 | ssize_t len; | |
79f0ba15 | 737 | int saved_errno; |
a9390b9f KH |
738 | |
739 | fd = open(path, O_RDONLY); | |
740 | if (fd < 0) | |
741 | return -1; | |
387e7e19 | 742 | len = strbuf_read(sb, fd, hint); |
79f0ba15 | 743 | saved_errno = errno; |
a9390b9f | 744 | close(fd); |
79f0ba15 JK |
745 | if (len < 0) { |
746 | errno = saved_errno; | |
a9390b9f | 747 | return -1; |
79f0ba15 | 748 | } |
a9390b9f KH |
749 | |
750 | return len; | |
751 | } | |
895680f0 JH |
752 | |
753 | void strbuf_add_lines(struct strbuf *out, const char *prefix, | |
754 | const char *buf, size_t size) | |
755 | { | |
db7f9309 | 756 | add_lines(out, prefix, buf, size, 0); |
895680f0 | 757 | } |
367d20ec | 758 | |
5963c036 MH |
759 | void strbuf_addstr_xml_quoted(struct strbuf *buf, const char *s) |
760 | { | |
761 | while (*s) { | |
762 | size_t len = strcspn(s, "\"<>&"); | |
763 | strbuf_add(buf, s, len); | |
764 | s += len; | |
765 | switch (*s) { | |
766 | case '"': | |
767 | strbuf_addstr(buf, """); | |
768 | break; | |
769 | case '<': | |
770 | strbuf_addstr(buf, "<"); | |
771 | break; | |
772 | case '>': | |
773 | strbuf_addstr(buf, ">"); | |
774 | break; | |
775 | case '&': | |
776 | strbuf_addstr(buf, "&"); | |
777 | break; | |
778 | case 0: | |
779 | return; | |
780 | } | |
781 | s++; | |
782 | } | |
783 | } | |
784 | ||
ea03a8e1 | 785 | static void strbuf_add_urlencode(struct strbuf *sb, const char *s, size_t len, |
c2694952 | 786 | char_predicate allow_unencoded_fn) |
c505116b JK |
787 | { |
788 | strbuf_grow(sb, len); | |
789 | while (len--) { | |
790 | char ch = *s++; | |
c2694952 | 791 | if (allow_unencoded_fn(ch)) |
c505116b JK |
792 | strbuf_addch(sb, ch); |
793 | else | |
4c267f2a | 794 | strbuf_addf(sb, "%%%02x", (unsigned char)ch); |
c505116b JK |
795 | } |
796 | } | |
797 | ||
798 | void strbuf_addstr_urlencode(struct strbuf *sb, const char *s, | |
c2694952 | 799 | char_predicate allow_unencoded_fn) |
c505116b | 800 | { |
c2694952 | 801 | strbuf_add_urlencode(sb, s, strlen(s), allow_unencoded_fn); |
c505116b | 802 | } |
9a0a30aa | 803 | |
8f354a1f DR |
804 | static void strbuf_humanise(struct strbuf *buf, off_t bytes, |
805 | int humanise_rate) | |
079b546a AP |
806 | { |
807 | if (bytes > 1 << 30) { | |
8f354a1f DR |
808 | strbuf_addf(buf, |
809 | humanise_rate == 0 ? | |
810 | /* TRANSLATORS: IEC 80000-13:2008 gibibyte */ | |
811 | _("%u.%2.2u GiB") : | |
812 | /* TRANSLATORS: IEC 80000-13:2008 gibibyte/second */ | |
813 | _("%u.%2.2u GiB/s"), | |
7726d360 JK |
814 | (unsigned)(bytes >> 30), |
815 | (unsigned)(bytes & ((1 << 30) - 1)) / 10737419); | |
079b546a | 816 | } else if (bytes > 1 << 20) { |
7726d360 | 817 | unsigned x = bytes + 5243; /* for rounding */ |
8f354a1f DR |
818 | strbuf_addf(buf, |
819 | humanise_rate == 0 ? | |
820 | /* TRANSLATORS: IEC 80000-13:2008 mebibyte */ | |
821 | _("%u.%2.2u MiB") : | |
822 | /* TRANSLATORS: IEC 80000-13:2008 mebibyte/second */ | |
823 | _("%u.%2.2u MiB/s"), | |
079b546a AP |
824 | x >> 20, ((x & ((1 << 20) - 1)) * 100) >> 20); |
825 | } else if (bytes > 1 << 10) { | |
7726d360 | 826 | unsigned x = bytes + 5; /* for rounding */ |
8f354a1f DR |
827 | strbuf_addf(buf, |
828 | humanise_rate == 0 ? | |
829 | /* TRANSLATORS: IEC 80000-13:2008 kibibyte */ | |
830 | _("%u.%2.2u KiB") : | |
831 | /* TRANSLATORS: IEC 80000-13:2008 kibibyte/second */ | |
832 | _("%u.%2.2u KiB/s"), | |
079b546a AP |
833 | x >> 10, ((x & ((1 << 10) - 1)) * 100) >> 10); |
834 | } else { | |
8f354a1f DR |
835 | strbuf_addf(buf, |
836 | humanise_rate == 0 ? | |
837 | /* TRANSLATORS: IEC 80000-13:2008 byte */ | |
6f693252 | 838 | Q_("%u byte", "%u bytes", bytes) : |
8f354a1f | 839 | /* TRANSLATORS: IEC 80000-13:2008 byte/second */ |
6f693252 | 840 | Q_("%u byte/s", "%u bytes/s", bytes), |
8f354a1f | 841 | (unsigned)bytes); |
079b546a AP |
842 | } |
843 | } | |
844 | ||
8f354a1f DR |
845 | void strbuf_humanise_bytes(struct strbuf *buf, off_t bytes) |
846 | { | |
847 | strbuf_humanise(buf, bytes, 0); | |
848 | } | |
849 | ||
850 | void strbuf_humanise_rate(struct strbuf *buf, off_t bytes) | |
851 | { | |
852 | strbuf_humanise(buf, bytes, 1); | |
853 | } | |
854 | ||
9a0a30aa NTND |
855 | int printf_ln(const char *fmt, ...) |
856 | { | |
857 | int ret; | |
858 | va_list ap; | |
859 | va_start(ap, fmt); | |
860 | ret = vprintf(fmt, ap); | |
861 | va_end(ap); | |
862 | if (ret < 0 || putchar('\n') == EOF) | |
863 | return -1; | |
864 | return ret + 1; | |
865 | } | |
866 | ||
867 | int fprintf_ln(FILE *fp, const char *fmt, ...) | |
868 | { | |
869 | int ret; | |
870 | va_list ap; | |
871 | va_start(ap, fmt); | |
872 | ret = vfprintf(fp, fmt, ap); | |
873 | va_end(ap); | |
874 | if (ret < 0 || putc('\n', fp) == EOF) | |
875 | return -1; | |
876 | return ret + 1; | |
877 | } | |
88d5a6f6 JK |
878 | |
879 | char *xstrdup_tolower(const char *string) | |
880 | { | |
881 | char *result; | |
882 | size_t len, i; | |
883 | ||
884 | len = strlen(string); | |
3733e694 | 885 | result = xmallocz(len); |
88d5a6f6 JK |
886 | for (i = 0; i < len; i++) |
887 | result[i] = tolower(string[i]); | |
88d5a6f6 JK |
888 | return result; |
889 | } | |
30a0ddb7 | 890 | |
13ecb463 LS |
891 | char *xstrdup_toupper(const char *string) |
892 | { | |
893 | char *result; | |
894 | size_t len, i; | |
895 | ||
896 | len = strlen(string); | |
897 | result = xmallocz(len); | |
898 | for (i = 0; i < len; i++) | |
899 | result[i] = toupper(string[i]); | |
88d5a6f6 JK |
900 | return result; |
901 | } | |
30a0ddb7 JK |
902 | |
903 | char *xstrvfmt(const char *fmt, va_list ap) | |
904 | { | |
905 | struct strbuf buf = STRBUF_INIT; | |
906 | strbuf_vaddf(&buf, fmt, ap); | |
907 | return strbuf_detach(&buf, NULL); | |
908 | } | |
909 | ||
910 | char *xstrfmt(const char *fmt, ...) | |
911 | { | |
912 | va_list ap; | |
913 | char *ret; | |
914 | ||
915 | va_start(ap, fmt); | |
916 | ret = xstrvfmt(fmt, ap); | |
917 | va_end(ap); | |
918 | ||
919 | return ret; | |
920 | } | |
aa1462cc | 921 | |
c3fbf81a | 922 | void strbuf_addftime(struct strbuf *sb, const char *fmt, const struct tm *tm, |
3b702239 | 923 | int tz_offset, int suppress_tz_name) |
aa1462cc | 924 | { |
c3fbf81a | 925 | struct strbuf munged_fmt = STRBUF_INIT; |
e4f031e3 | 926 | size_t hint = 128; |
aa1462cc JK |
927 | size_t len; |
928 | ||
e4f031e3 JK |
929 | if (!*fmt) |
930 | return; | |
931 | ||
c3fbf81a RS |
932 | /* |
933 | * There is no portable way to pass timezone information to | |
9b591b94 JK |
934 | * strftime, so we handle %z and %Z here. Likewise '%s', because |
935 | * going back to an epoch time requires knowing the zone. | |
936 | * | |
937 | * Note that tz_offset is in the "[-+]HHMM" decimal form; this is what | |
938 | * we want for %z, but the computation for %s has to convert to number | |
939 | * of seconds. | |
c3fbf81a | 940 | */ |
44ccb337 | 941 | while (strbuf_expand_step(&munged_fmt, &fmt)) { |
945c7225 | 942 | if (skip_prefix(fmt, "%", &fmt)) |
c3fbf81a | 943 | strbuf_addstr(&munged_fmt, "%%"); |
945c7225 | 944 | else if (skip_prefix(fmt, "s", &fmt)) |
9b591b94 JK |
945 | strbuf_addf(&munged_fmt, "%"PRItime, |
946 | (timestamp_t)tm_to_time_t(tm) - | |
947 | 3600 * (tz_offset / 100) - | |
948 | 60 * (tz_offset % 100)); | |
945c7225 | 949 | else if (skip_prefix(fmt, "z", &fmt)) |
c3fbf81a | 950 | strbuf_addf(&munged_fmt, "%+05d", tz_offset); |
945c7225 RS |
951 | else if (suppress_tz_name && skip_prefix(fmt, "Z", &fmt)) |
952 | ; /* nothing */ | |
953 | else | |
c3fbf81a | 954 | strbuf_addch(&munged_fmt, '%'); |
c3fbf81a RS |
955 | } |
956 | fmt = munged_fmt.buf; | |
957 | ||
e4f031e3 | 958 | strbuf_grow(sb, hint); |
aa1462cc JK |
959 | len = strftime(sb->buf + sb->len, sb->alloc - sb->len, fmt, tm); |
960 | ||
961 | if (!len) { | |
962 | /* | |
e4f031e3 JK |
963 | * strftime reports "0" if it could not fit the result in the buffer. |
964 | * Unfortunately, it also reports "0" if the requested time string | |
965 | * takes 0 bytes. So our strategy is to munge the format so that the | |
966 | * output contains at least one character, and then drop the extra | |
967 | * character before returning. | |
aa1462cc | 968 | */ |
c3fbf81a | 969 | strbuf_addch(&munged_fmt, ' '); |
e4f031e3 JK |
970 | while (!len) { |
971 | hint *= 2; | |
972 | strbuf_grow(sb, hint); | |
973 | len = strftime(sb->buf + sb->len, sb->alloc - sb->len, | |
974 | munged_fmt.buf, tm); | |
975 | } | |
e4f031e3 | 976 | len--; /* drop munged space */ |
aa1462cc | 977 | } |
c3fbf81a | 978 | strbuf_release(&munged_fmt); |
e4f031e3 | 979 | strbuf_setlen(sb, sb->len + len); |
aa1462cc | 980 | } |
af49c6d0 | 981 | |
63af4a84 TK |
982 | /* |
983 | * Returns the length of a line, without trailing spaces. | |
984 | * | |
985 | * If the line ends with newline, it will be removed too. | |
986 | */ | |
987 | static size_t cleanup(char *line, size_t len) | |
988 | { | |
989 | while (len) { | |
990 | unsigned char c = line[len - 1]; | |
991 | if (!isspace(c)) | |
992 | break; | |
993 | len--; | |
994 | } | |
995 | ||
996 | return len; | |
997 | } | |
998 | ||
999 | /* | |
1000 | * Remove empty lines from the beginning and end | |
1001 | * and also trailing spaces from every line. | |
1002 | * | |
1003 | * Turn multiple consecutive empty lines between paragraphs | |
1004 | * into just one empty line. | |
1005 | * | |
1006 | * If the input has only empty lines and spaces, | |
1007 | * no output will be produced. | |
1008 | * | |
1009 | * If last line does not have a newline at the end, one is added. | |
1010 | * | |
2982b656 | 1011 | * Pass a non-NULL comment_prefix to skip every line starting |
787cb8a4 | 1012 | * with it. |
63af4a84 | 1013 | */ |
2982b656 | 1014 | void strbuf_stripspace(struct strbuf *sb, const char *comment_prefix) |
63af4a84 | 1015 | { |
26114c00 | 1016 | size_t empties = 0; |
63af4a84 TK |
1017 | size_t i, j, len, newlen; |
1018 | char *eol; | |
1019 | ||
1020 | /* We may have to add a newline. */ | |
1021 | strbuf_grow(sb, 1); | |
1022 | ||
1023 | for (i = j = 0; i < sb->len; i += len, j += newlen) { | |
1024 | eol = memchr(sb->buf + i, '\n', sb->len - i); | |
1025 | len = eol ? eol - (sb->buf + i) + 1 : sb->len - i; | |
1026 | ||
2786d058 | 1027 | if (comment_prefix && len && |
2982b656 | 1028 | starts_with(sb->buf + i, comment_prefix)) { |
63af4a84 TK |
1029 | newlen = 0; |
1030 | continue; | |
1031 | } | |
1032 | newlen = cleanup(sb->buf + i, len); | |
1033 | ||
1034 | /* Not just an empty line? */ | |
1035 | if (newlen) { | |
1036 | if (empties > 0 && j > 0) | |
1037 | sb->buf[j++] = '\n'; | |
1038 | empties = 0; | |
1039 | memmove(sb->buf + j, sb->buf + i, newlen); | |
1040 | sb->buf[newlen + j++] = '\n'; | |
1041 | } else { | |
1042 | empties++; | |
1043 | } | |
1044 | } | |
1045 | ||
1046 | strbuf_setlen(sb, j); | |
1047 | } | |
670c359d | 1048 | |
9ea57964 DS |
1049 | void strbuf_strip_file_from_path(struct strbuf *sb) |
1050 | { | |
1051 | char *path_sep = find_last_dir_sep(sb->buf); | |
1052 | strbuf_setlen(sb, path_sep ? path_sep - sb->buf + 1 : 0); | |
1053 | } |