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Commit | Line | Data |
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e93fc5d7 | 1 | #include "git-compat-util.h" |
0b027f6c | 2 | #include "abspath.h" |
36bf1958 | 3 | #include "alloc.h" |
7ee24e18 | 4 | #include "environment.h" |
f394e093 | 5 | #include "gettext.h" |
41771fa4 | 6 | #include "hex.h" |
dabab1d6 | 7 | #include "object-name.h" |
a2fab531 | 8 | #include "refs.h" |
c339932b | 9 | #include "path.h" |
d1cbe1e6 | 10 | #include "repository.h" |
f6f77559 | 11 | #include "string-list.h" |
d4241f52 | 12 | #include "utf8.h" |
88c7b4c3 | 13 | #include "date.h" |
d5ebb50d | 14 | #include "wrapper.h" |
d1df5743 | 15 | |
95662315 CC |
16 | int starts_with(const char *str, const char *prefix) |
17 | { | |
18 | for (; ; str++, prefix++) | |
19 | if (!*prefix) | |
20 | return 1; | |
21 | else if (*str != *prefix) | |
22 | return 0; | |
23 | } | |
24 | ||
66b8af3e LS |
25 | int istarts_with(const char *str, const char *prefix) |
26 | { | |
27 | for (; ; str++, prefix++) | |
28 | if (!*prefix) | |
29 | return 1; | |
30 | else if (tolower(*str) != tolower(*prefix)) | |
31 | return 0; | |
32 | } | |
33 | ||
afaef55e CC |
34 | int skip_to_optional_arg_default(const char *str, const char *prefix, |
35 | const char **arg, const char *def) | |
36 | { | |
37 | const char *p; | |
38 | ||
39 | if (!skip_prefix(str, prefix, &p)) | |
40 | return 0; | |
41 | ||
42 | if (!*p) { | |
43 | if (arg) | |
44 | *arg = def; | |
45 | return 1; | |
46 | } | |
47 | ||
48 | if (*p != '=') | |
49 | return 0; | |
50 | ||
51 | if (arg) | |
52 | *arg = p + 1; | |
53 | return 1; | |
54 | } | |
55 | ||
b315c5c0 PH |
56 | /* |
57 | * Used as the default ->buf value, so that people can always assume | |
58 | * buf is non NULL and ->buf is NUL terminated even for a freshly | |
59 | * initialized strbuf. | |
60 | */ | |
61 | char strbuf_slopbuf[1]; | |
62 | ||
917c9a71 PH |
63 | void strbuf_init(struct strbuf *sb, size_t hint) |
64 | { | |
5726a6b4 ÆAB |
65 | struct strbuf blank = STRBUF_INIT; |
66 | memcpy(sb, &blank, sizeof(*sb)); | |
8c74ef1e | 67 | if (hint) |
f1696ee3 | 68 | strbuf_grow(sb, hint); |
d1df5743 JH |
69 | } |
70 | ||
917c9a71 PH |
71 | void strbuf_release(struct strbuf *sb) |
72 | { | |
b315c5c0 PH |
73 | if (sb->alloc) { |
74 | free(sb->buf); | |
75 | strbuf_init(sb, 0); | |
76 | } | |
b449f4cf PH |
77 | } |
78 | ||
b315c5c0 | 79 | char *strbuf_detach(struct strbuf *sb, size_t *sz) |
917c9a71 | 80 | { |
08ad56f3 JK |
81 | char *res; |
82 | strbuf_grow(sb, 0); | |
83 | res = sb->buf; | |
b315c5c0 PH |
84 | if (sz) |
85 | *sz = sb->len; | |
f1696ee3 | 86 | strbuf_init(sb, 0); |
b449f4cf PH |
87 | return res; |
88 | } | |
89 | ||
917c9a71 PH |
90 | void strbuf_attach(struct strbuf *sb, void *buf, size_t len, size_t alloc) |
91 | { | |
92 | strbuf_release(sb); | |
93 | sb->buf = buf; | |
94 | sb->len = len; | |
95 | sb->alloc = alloc; | |
96 | strbuf_grow(sb, 0); | |
97 | sb->buf[sb->len] = '\0'; | |
98 | } | |
99 | ||
100 | void strbuf_grow(struct strbuf *sb, size_t extra) | |
101 | { | |
8c74ef1e | 102 | int new_buf = !sb->alloc; |
1368f650 JN |
103 | if (unsigned_add_overflows(extra, 1) || |
104 | unsigned_add_overflows(sb->len, extra + 1)) | |
b449f4cf | 105 | die("you want to use way too much memory"); |
8c74ef1e | 106 | if (new_buf) |
b315c5c0 | 107 | sb->buf = NULL; |
b449f4cf | 108 | ALLOC_GROW(sb->buf, sb->len + extra + 1, sb->alloc); |
8c74ef1e TR |
109 | if (new_buf) |
110 | sb->buf[0] = '\0'; | |
b449f4cf PH |
111 | } |
112 | ||
eacd6dc5 LS |
113 | void strbuf_trim(struct strbuf *sb) |
114 | { | |
3bb55e8a BG |
115 | strbuf_rtrim(sb); |
116 | strbuf_ltrim(sb); | |
eacd6dc5 | 117 | } |
c64a8d20 | 118 | |
f1696ee3 PH |
119 | void strbuf_rtrim(struct strbuf *sb) |
120 | { | |
121 | while (sb->len > 0 && isspace((unsigned char)sb->buf[sb->len - 1])) | |
122 | sb->len--; | |
123 | sb->buf[sb->len] = '\0'; | |
124 | } | |
125 | ||
c64a8d20 NTND |
126 | void strbuf_trim_trailing_dir_sep(struct strbuf *sb) |
127 | { | |
128 | while (sb->len > 0 && is_dir_sep((unsigned char)sb->buf[sb->len - 1])) | |
129 | sb->len--; | |
130 | sb->buf[sb->len] = '\0'; | |
131 | } | |
132 | ||
f9573628 PK |
133 | void strbuf_trim_trailing_newline(struct strbuf *sb) |
134 | { | |
135 | if (sb->len > 0 && sb->buf[sb->len - 1] == '\n') { | |
136 | if (--sb->len > 0 && sb->buf[sb->len - 1] == '\r') | |
137 | --sb->len; | |
138 | sb->buf[sb->len] = '\0'; | |
139 | } | |
140 | } | |
141 | ||
eacd6dc5 LS |
142 | void strbuf_ltrim(struct strbuf *sb) |
143 | { | |
144 | char *b = sb->buf; | |
145 | while (sb->len > 0 && isspace(*b)) { | |
146 | b++; | |
147 | sb->len--; | |
148 | } | |
149 | memmove(sb->buf, b, sb->len); | |
150 | sb->buf[sb->len] = '\0'; | |
151 | } | |
152 | ||
d4241f52 JK |
153 | int strbuf_reencode(struct strbuf *sb, const char *from, const char *to) |
154 | { | |
155 | char *out; | |
c7d017d7 | 156 | size_t len; |
d4241f52 JK |
157 | |
158 | if (same_encoding(from, to)) | |
159 | return 0; | |
160 | ||
161 | out = reencode_string_len(sb->buf, sb->len, to, from, &len); | |
162 | if (!out) | |
163 | return -1; | |
164 | ||
165 | strbuf_attach(sb, out, len, len); | |
166 | return 0; | |
167 | } | |
168 | ||
ffb20ce1 JK |
169 | void strbuf_tolower(struct strbuf *sb) |
170 | { | |
171 | char *p = sb->buf, *end = sb->buf + sb->len; | |
172 | for (; p < end; p++) | |
173 | *p = tolower(*p); | |
174 | } | |
175 | ||
17b73dc6 MH |
176 | struct strbuf **strbuf_split_buf(const char *str, size_t slen, |
177 | int terminator, int max) | |
eacd6dc5 | 178 | { |
b8c2c1fa MH |
179 | struct strbuf **ret = NULL; |
180 | size_t nr = 0, alloc = 0; | |
eacd6dc5 LS |
181 | struct strbuf *t; |
182 | ||
1173bb33 MH |
183 | while (slen) { |
184 | int len = slen; | |
185 | if (max <= 0 || nr + 1 < max) { | |
17b73dc6 | 186 | const char *end = memchr(str, terminator, slen); |
1173bb33 MH |
187 | if (end) |
188 | len = end - str + 1; | |
189 | } | |
eacd6dc5 LS |
190 | t = xmalloc(sizeof(struct strbuf)); |
191 | strbuf_init(t, len); | |
1173bb33 | 192 | strbuf_add(t, str, len); |
b8c2c1fa MH |
193 | ALLOC_GROW(ret, nr + 2, alloc); |
194 | ret[nr++] = t; | |
1173bb33 MH |
195 | str += len; |
196 | slen -= len; | |
eacd6dc5 | 197 | } |
b8c2c1fa MH |
198 | ALLOC_GROW(ret, nr + 1, alloc); /* In case string was empty */ |
199 | ret[nr] = NULL; | |
eacd6dc5 LS |
200 | return ret; |
201 | } | |
202 | ||
f6f77559 EN |
203 | void strbuf_add_separated_string_list(struct strbuf *str, |
204 | const char *sep, | |
205 | struct string_list *slist) | |
206 | { | |
207 | struct string_list_item *item; | |
208 | int sep_needed = 0; | |
209 | ||
210 | for_each_string_list_item(item, slist) { | |
211 | if (sep_needed) | |
212 | strbuf_addstr(str, sep); | |
213 | strbuf_addstr(str, item->string); | |
214 | sep_needed = 1; | |
215 | } | |
216 | } | |
217 | ||
eacd6dc5 LS |
218 | void strbuf_list_free(struct strbuf **sbs) |
219 | { | |
220 | struct strbuf **s = sbs; | |
221 | ||
f3a96807 AH |
222 | if (!s) |
223 | return; | |
eacd6dc5 LS |
224 | while (*s) { |
225 | strbuf_release(*s); | |
226 | free(*s++); | |
227 | } | |
228 | free(sbs); | |
229 | } | |
230 | ||
9b200fd6 | 231 | int strbuf_cmp(const struct strbuf *a, const struct strbuf *b) |
45f66f64 | 232 | { |
26114c00 | 233 | size_t len = a->len < b->len ? a->len: b->len; |
8f024655 AR |
234 | int cmp = memcmp(a->buf, b->buf, len); |
235 | if (cmp) | |
236 | return cmp; | |
237 | return a->len < b->len ? -1: a->len != b->len; | |
45f66f64 PH |
238 | } |
239 | ||
917c9a71 PH |
240 | void strbuf_splice(struct strbuf *sb, size_t pos, size_t len, |
241 | const void *data, size_t dlen) | |
242 | { | |
1368f650 | 243 | if (unsigned_add_overflows(pos, len)) |
917c9a71 PH |
244 | die("you want to use way too much memory"); |
245 | if (pos > sb->len) | |
246 | die("`pos' is too far after the end of the buffer"); | |
247 | if (pos + len > sb->len) | |
248 | die("`pos + len' is too far after the end of the buffer"); | |
249 | ||
250 | if (dlen >= len) | |
251 | strbuf_grow(sb, dlen - len); | |
252 | memmove(sb->buf + pos + dlen, | |
253 | sb->buf + pos + len, | |
254 | sb->len - pos - len); | |
255 | memcpy(sb->buf + pos, data, dlen); | |
256 | strbuf_setlen(sb, sb->len + dlen - len); | |
257 | } | |
258 | ||
c76689df PH |
259 | void strbuf_insert(struct strbuf *sb, size_t pos, const void *data, size_t len) |
260 | { | |
261 | strbuf_splice(sb, pos, 0, data, len); | |
262 | } | |
263 | ||
5ef264db PSU |
264 | void strbuf_vinsertf(struct strbuf *sb, size_t pos, const char *fmt, va_list ap) |
265 | { | |
266 | int len, len2; | |
267 | char save; | |
268 | va_list cp; | |
269 | ||
270 | if (pos > sb->len) | |
271 | die("`pos' is too far after the end of the buffer"); | |
272 | va_copy(cp, ap); | |
273 | len = vsnprintf(sb->buf + sb->len, 0, fmt, cp); | |
274 | va_end(cp); | |
275 | if (len < 0) | |
276 | BUG("your vsnprintf is broken (returned %d)", len); | |
277 | if (!len) | |
278 | return; /* nothing to do */ | |
279 | if (unsigned_add_overflows(sb->len, len)) | |
280 | die("you want to use way too much memory"); | |
281 | strbuf_grow(sb, len); | |
282 | memmove(sb->buf + pos + len, sb->buf + pos, sb->len - pos); | |
283 | /* vsnprintf() will append a NUL, overwriting one of our characters */ | |
284 | save = sb->buf[pos + len]; | |
285 | len2 = vsnprintf(sb->buf + pos, len + 1, fmt, ap); | |
286 | sb->buf[pos + len] = save; | |
287 | if (len2 != len) | |
288 | BUG("your vsnprintf is broken (returns inconsistent lengths)"); | |
289 | strbuf_setlen(sb, sb->len + len); | |
290 | } | |
291 | ||
292 | void strbuf_insertf(struct strbuf *sb, size_t pos, const char *fmt, ...) | |
293 | { | |
294 | va_list ap; | |
295 | va_start(ap, fmt); | |
296 | strbuf_vinsertf(sb, pos, fmt, ap); | |
297 | va_end(ap); | |
298 | } | |
299 | ||
c76689df PH |
300 | void strbuf_remove(struct strbuf *sb, size_t pos, size_t len) |
301 | { | |
a8342a41 | 302 | strbuf_splice(sb, pos, len, "", 0); |
c76689df PH |
303 | } |
304 | ||
917c9a71 PH |
305 | void strbuf_add(struct strbuf *sb, const void *data, size_t len) |
306 | { | |
b449f4cf PH |
307 | strbuf_grow(sb, len); |
308 | memcpy(sb->buf + sb->len, data, len); | |
309 | strbuf_setlen(sb, sb->len + len); | |
310 | } | |
311 | ||
31471ba2 RS |
312 | void strbuf_addbuf(struct strbuf *sb, const struct strbuf *sb2) |
313 | { | |
314 | strbuf_grow(sb, sb2->len); | |
315 | memcpy(sb->buf + sb->len, sb2->buf, sb2->len); | |
316 | strbuf_setlen(sb, sb->len + sb2->len); | |
317 | } | |
318 | ||
e71c4a88 PSU |
319 | const char *strbuf_join_argv(struct strbuf *buf, |
320 | int argc, const char **argv, char delim) | |
321 | { | |
322 | if (!argc) | |
323 | return buf->buf; | |
324 | ||
325 | strbuf_addstr(buf, *argv); | |
326 | while (--argc) { | |
327 | strbuf_addch(buf, delim); | |
328 | strbuf_addstr(buf, *(++argv)); | |
329 | } | |
330 | ||
331 | return buf->buf; | |
332 | } | |
333 | ||
d07235a0 RS |
334 | void strbuf_addchars(struct strbuf *sb, int c, size_t n) |
335 | { | |
336 | strbuf_grow(sb, n); | |
337 | memset(sb->buf + sb->len, c, n); | |
338 | strbuf_setlen(sb, sb->len + n); | |
339 | } | |
340 | ||
917c9a71 PH |
341 | void strbuf_addf(struct strbuf *sb, const char *fmt, ...) |
342 | { | |
b449f4cf | 343 | va_list ap; |
ebeb6090 JK |
344 | va_start(ap, fmt); |
345 | strbuf_vaddf(sb, fmt, ap); | |
346 | va_end(ap); | |
347 | } | |
348 | ||
eff80a9f JH |
349 | static void add_lines(struct strbuf *out, |
350 | const char *prefix1, | |
351 | const char *prefix2, | |
352 | const char *buf, size_t size) | |
353 | { | |
354 | while (size) { | |
355 | const char *prefix; | |
356 | const char *next = memchr(buf, '\n', size); | |
357 | next = next ? (next + 1) : (buf + size); | |
358 | ||
d55aeb76 JH |
359 | prefix = ((prefix2 && (buf[0] == '\n' || buf[0] == '\t')) |
360 | ? prefix2 : prefix1); | |
eff80a9f JH |
361 | strbuf_addstr(out, prefix); |
362 | strbuf_add(out, buf, next - buf); | |
363 | size -= next - buf; | |
364 | buf = next; | |
365 | } | |
366 | strbuf_complete_line(out); | |
367 | } | |
368 | ||
369 | void strbuf_add_commented_lines(struct strbuf *out, const char *buf, size_t size) | |
370 | { | |
371 | static char prefix1[3]; | |
372 | static char prefix2[2]; | |
373 | ||
374 | if (prefix1[0] != comment_line_char) { | |
5096d490 JK |
375 | xsnprintf(prefix1, sizeof(prefix1), "%c ", comment_line_char); |
376 | xsnprintf(prefix2, sizeof(prefix2), "%c", comment_line_char); | |
eff80a9f JH |
377 | } |
378 | add_lines(out, prefix1, prefix2, buf, size); | |
379 | } | |
380 | ||
381 | void strbuf_commented_addf(struct strbuf *sb, const char *fmt, ...) | |
382 | { | |
383 | va_list params; | |
384 | struct strbuf buf = STRBUF_INIT; | |
385 | int incomplete_line = sb->len && sb->buf[sb->len - 1] != '\n'; | |
386 | ||
387 | va_start(params, fmt); | |
388 | strbuf_vaddf(&buf, fmt, params); | |
389 | va_end(params); | |
390 | ||
391 | strbuf_add_commented_lines(sb, buf.buf, buf.len); | |
392 | if (incomplete_line) | |
393 | sb->buf[--sb->len] = '\0'; | |
394 | ||
395 | strbuf_release(&buf); | |
396 | } | |
397 | ||
ebeb6090 JK |
398 | void strbuf_vaddf(struct strbuf *sb, const char *fmt, va_list ap) |
399 | { | |
400 | int len; | |
401 | va_list cp; | |
b449f4cf | 402 | |
f141bd80 SP |
403 | if (!strbuf_avail(sb)) |
404 | strbuf_grow(sb, 64); | |
ebeb6090 JK |
405 | va_copy(cp, ap); |
406 | len = vsnprintf(sb->buf + sb->len, sb->alloc - sb->len, fmt, cp); | |
407 | va_end(cp); | |
f141bd80 | 408 | if (len < 0) |
033abf97 | 409 | BUG("your vsnprintf is broken (returned %d)", len); |
f1696ee3 | 410 | if (len > strbuf_avail(sb)) { |
b449f4cf | 411 | strbuf_grow(sb, len); |
b449f4cf | 412 | len = vsnprintf(sb->buf + sb->len, sb->alloc - sb->len, fmt, ap); |
ebeb6090 | 413 | if (len > strbuf_avail(sb)) |
033abf97 | 414 | BUG("your vsnprintf is broken (insatiable)"); |
b449f4cf PH |
415 | } |
416 | strbuf_setlen(sb, sb->len + len); | |
d1df5743 JH |
417 | } |
418 | ||
c3a670de MC |
419 | void strbuf_expand(struct strbuf *sb, const char *format, expand_fn_t fn, |
420 | void *context) | |
cde75e59 RS |
421 | { |
422 | for (;;) { | |
c3a670de MC |
423 | const char *percent; |
424 | size_t consumed; | |
cde75e59 RS |
425 | |
426 | percent = strchrnul(format, '%'); | |
427 | strbuf_add(sb, format, percent - format); | |
428 | if (!*percent) | |
429 | break; | |
430 | format = percent + 1; | |
431 | ||
0a0416a3 JK |
432 | if (*format == '%') { |
433 | strbuf_addch(sb, '%'); | |
434 | format++; | |
435 | continue; | |
436 | } | |
437 | ||
c3a670de MC |
438 | consumed = fn(sb, format, context); |
439 | if (consumed) | |
440 | format += consumed; | |
441 | else | |
cde75e59 RS |
442 | strbuf_addch(sb, '%'); |
443 | } | |
444 | } | |
445 | ||
fd2015b3 AW |
446 | size_t strbuf_expand_literal_cb(struct strbuf *sb, |
447 | const char *placeholder, | |
5cf88fd8 | 448 | void *context UNUSED) |
fd2015b3 AW |
449 | { |
450 | int ch; | |
451 | ||
452 | switch (placeholder[0]) { | |
453 | case 'n': /* newline */ | |
454 | strbuf_addch(sb, '\n'); | |
455 | return 1; | |
456 | case 'x': | |
457 | /* %x00 == NUL, %x0a == LF, etc. */ | |
458 | ch = hex2chr(placeholder + 1); | |
459 | if (ch < 0) | |
460 | return 0; | |
461 | strbuf_addch(sb, ch); | |
462 | return 3; | |
463 | } | |
464 | return 0; | |
465 | } | |
466 | ||
9b864e73 RS |
467 | size_t strbuf_expand_dict_cb(struct strbuf *sb, const char *placeholder, |
468 | void *context) | |
469 | { | |
470 | struct strbuf_expand_dict_entry *e = context; | |
471 | size_t len; | |
472 | ||
473 | for (; e->placeholder && (len = strlen(e->placeholder)); e++) { | |
474 | if (!strncmp(placeholder, e->placeholder, len)) { | |
475 | if (e->value) | |
476 | strbuf_addstr(sb, e->value); | |
477 | return len; | |
478 | } | |
479 | } | |
480 | return 0; | |
481 | } | |
482 | ||
361df5df JK |
483 | void strbuf_addbuf_percentquote(struct strbuf *dst, const struct strbuf *src) |
484 | { | |
26114c00 | 485 | size_t i, len = src->len; |
361df5df JK |
486 | |
487 | for (i = 0; i < len; i++) { | |
488 | if (src->buf[i] == '%') | |
489 | strbuf_addch(dst, '%'); | |
490 | strbuf_addch(dst, src->buf[i]); | |
491 | } | |
492 | } | |
493 | ||
b44d0118 | 494 | #define URL_UNSAFE_CHARS " <>\"%{}|\\^`:?#[]@!$&'()*+,;=" |
46fd7b39 | 495 | |
b44d0118 | 496 | void strbuf_add_percentencode(struct strbuf *dst, const char *src, int flags) |
46fd7b39 | 497 | { |
498 | size_t i, len = strlen(src); | |
499 | ||
500 | for (i = 0; i < len; i++) { | |
501 | unsigned char ch = src[i]; | |
b44d0118 | 502 | if (ch <= 0x1F || ch >= 0x7F || |
503 | (ch == '/' && (flags & STRBUF_ENCODE_SLASH)) || | |
504 | strchr(URL_UNSAFE_CHARS, ch)) | |
46fd7b39 | 505 | strbuf_addf(dst, "%%%02X", (unsigned char)ch); |
506 | else | |
507 | strbuf_addch(dst, ch); | |
508 | } | |
509 | } | |
510 | ||
917c9a71 PH |
511 | size_t strbuf_fread(struct strbuf *sb, size_t size, FILE *f) |
512 | { | |
b449f4cf | 513 | size_t res; |
2fc64700 | 514 | size_t oldalloc = sb->alloc; |
b449f4cf PH |
515 | |
516 | strbuf_grow(sb, size); | |
517 | res = fread(sb->buf + sb->len, 1, size, f); | |
2fc64700 | 518 | if (res > 0) |
b449f4cf | 519 | strbuf_setlen(sb, sb->len + res); |
6651c3f7 | 520 | else if (oldalloc == 0) |
2fc64700 | 521 | strbuf_release(sb); |
b449f4cf | 522 | return res; |
d1df5743 JH |
523 | } |
524 | ||
f1696ee3 | 525 | ssize_t strbuf_read(struct strbuf *sb, int fd, size_t hint) |
b449f4cf PH |
526 | { |
527 | size_t oldlen = sb->len; | |
2fc64700 | 528 | size_t oldalloc = sb->alloc; |
b449f4cf | 529 | |
f1696ee3 | 530 | strbuf_grow(sb, hint ? hint : 8192); |
b449f4cf | 531 | for (;;) { |
3ebbd00c JH |
532 | ssize_t want = sb->alloc - sb->len - 1; |
533 | ssize_t got = read_in_full(fd, sb->buf + sb->len, want); | |
b449f4cf | 534 | |
3ebbd00c | 535 | if (got < 0) { |
2fc64700 RS |
536 | if (oldalloc == 0) |
537 | strbuf_release(sb); | |
538 | else | |
539 | strbuf_setlen(sb, oldlen); | |
b449f4cf PH |
540 | return -1; |
541 | } | |
3ebbd00c JH |
542 | sb->len += got; |
543 | if (got < want) | |
b449f4cf | 544 | break; |
f1696ee3 | 545 | strbuf_grow(sb, 8192); |
b449f4cf PH |
546 | } |
547 | ||
548 | sb->buf[sb->len] = '\0'; | |
549 | return sb->len - oldlen; | |
d1df5743 JH |
550 | } |
551 | ||
b4e04fb6 SB |
552 | ssize_t strbuf_read_once(struct strbuf *sb, int fd, size_t hint) |
553 | { | |
c3ff8f6c | 554 | size_t oldalloc = sb->alloc; |
b4e04fb6 SB |
555 | ssize_t cnt; |
556 | ||
557 | strbuf_grow(sb, hint ? hint : 8192); | |
558 | cnt = xread(fd, sb->buf + sb->len, sb->alloc - sb->len - 1); | |
559 | if (cnt > 0) | |
560 | strbuf_setlen(sb, sb->len + cnt); | |
c3ff8f6c RS |
561 | else if (oldalloc == 0) |
562 | strbuf_release(sb); | |
b4e04fb6 SB |
563 | return cnt; |
564 | } | |
565 | ||
2dac9b56 SB |
566 | ssize_t strbuf_write(struct strbuf *sb, FILE *f) |
567 | { | |
568 | return sb->len ? fwrite(sb->buf, 1, sb->len, f) : 0; | |
569 | } | |
570 | ||
b11b7e13 LT |
571 | #define STRBUF_MAXLINK (2*PATH_MAX) |
572 | ||
573 | int strbuf_readlink(struct strbuf *sb, const char *path, size_t hint) | |
574 | { | |
2fc64700 RS |
575 | size_t oldalloc = sb->alloc; |
576 | ||
b11b7e13 LT |
577 | if (hint < 32) |
578 | hint = 32; | |
579 | ||
580 | while (hint < STRBUF_MAXLINK) { | |
f3e76ed2 | 581 | ssize_t len; |
b11b7e13 LT |
582 | |
583 | strbuf_grow(sb, hint); | |
584 | len = readlink(path, sb->buf, hint); | |
585 | if (len < 0) { | |
586 | if (errno != ERANGE) | |
587 | break; | |
588 | } else if (len < hint) { | |
589 | strbuf_setlen(sb, len); | |
590 | return 0; | |
591 | } | |
592 | ||
593 | /* .. the buffer was too small - try again */ | |
594 | hint *= 2; | |
595 | } | |
2fc64700 RS |
596 | if (oldalloc == 0) |
597 | strbuf_release(sb); | |
b11b7e13 LT |
598 | return -1; |
599 | } | |
600 | ||
f22a76e9 RS |
601 | int strbuf_getcwd(struct strbuf *sb) |
602 | { | |
603 | size_t oldalloc = sb->alloc; | |
604 | size_t guessed_len = 128; | |
605 | ||
606 | for (;; guessed_len *= 2) { | |
607 | strbuf_grow(sb, guessed_len); | |
608 | if (getcwd(sb->buf, sb->alloc)) { | |
609 | strbuf_setlen(sb, strlen(sb->buf)); | |
610 | return 0; | |
611 | } | |
a54e938e RS |
612 | |
613 | /* | |
614 | * If getcwd(3) is implemented as a syscall that falls | |
615 | * back to a regular lookup using readdir(3) etc. then | |
616 | * we may be able to avoid EACCES by providing enough | |
617 | * space to the syscall as it's not necessarily bound | |
618 | * to the same restrictions as the fallback. | |
619 | */ | |
620 | if (errno == EACCES && guessed_len < PATH_MAX) | |
621 | continue; | |
622 | ||
f22a76e9 RS |
623 | if (errno != ERANGE) |
624 | break; | |
625 | } | |
626 | if (oldalloc == 0) | |
627 | strbuf_release(sb); | |
628 | else | |
629 | strbuf_reset(sb); | |
630 | return -1; | |
631 | } | |
632 | ||
0cc30e0e JK |
633 | #ifdef HAVE_GETDELIM |
634 | int strbuf_getwholeline(struct strbuf *sb, FILE *fp, int term) | |
635 | { | |
636 | ssize_t r; | |
637 | ||
638 | if (feof(fp)) | |
639 | return EOF; | |
640 | ||
641 | strbuf_reset(sb); | |
642 | ||
643 | /* Translate slopbuf to NULL, as we cannot call realloc on it */ | |
644 | if (!sb->alloc) | |
645 | sb->buf = NULL; | |
642956cf | 646 | errno = 0; |
0cc30e0e JK |
647 | r = getdelim(&sb->buf, &sb->alloc, term, fp); |
648 | ||
649 | if (r > 0) { | |
650 | sb->len = r; | |
651 | return 0; | |
652 | } | |
653 | assert(r == -1); | |
654 | ||
655 | /* | |
656 | * Normally we would have called xrealloc, which will try to free | |
657 | * memory and recover. But we have no way to tell getdelim() to do so. | |
658 | * Worse, we cannot try to recover ENOMEM ourselves, because we have | |
659 | * no idea how many bytes were read by getdelim. | |
660 | * | |
661 | * Dying here is reasonable. It mirrors what xrealloc would do on | |
662 | * catastrophic memory failure. We skip the opportunity to free pack | |
663 | * memory and retry, but that's unlikely to help for a malloc small | |
664 | * enough to hold a single line of input, anyway. | |
665 | */ | |
666 | if (errno == ENOMEM) | |
667 | die("Out of memory, getdelim failed"); | |
668 | ||
b7090430 JK |
669 | /* |
670 | * Restore strbuf invariants; if getdelim left us with a NULL pointer, | |
671 | * we can just re-init, but otherwise we should make sure that our | |
672 | * length is empty, and that the result is NUL-terminated. | |
673 | */ | |
0cc30e0e JK |
674 | if (!sb->buf) |
675 | strbuf_init(sb, 0); | |
b7090430 JK |
676 | else |
677 | strbuf_reset(sb); | |
0cc30e0e JK |
678 | return EOF; |
679 | } | |
680 | #else | |
c7e4f0d7 | 681 | int strbuf_getwholeline(struct strbuf *sb, FILE *fp, int term) |
917c9a71 | 682 | { |
d1df5743 | 683 | int ch; |
e6c019d0 | 684 | |
e6c019d0 PH |
685 | if (feof(fp)) |
686 | return EOF; | |
b449f4cf PH |
687 | |
688 | strbuf_reset(sb); | |
82912d1d JK |
689 | flockfile(fp); |
690 | while ((ch = getc_unlocked(fp)) != EOF) { | |
f80c153b JK |
691 | if (!strbuf_avail(sb)) |
692 | strbuf_grow(sb, 1); | |
b449f4cf | 693 | sb->buf[sb->len++] = ch; |
c7e4f0d7 BC |
694 | if (ch == term) |
695 | break; | |
d1df5743 | 696 | } |
82912d1d | 697 | funlockfile(fp); |
e6c019d0 PH |
698 | if (ch == EOF && sb->len == 0) |
699 | return EOF; | |
b449f4cf | 700 | |
b449f4cf | 701 | sb->buf[sb->len] = '\0'; |
e6c019d0 | 702 | return 0; |
d1df5743 | 703 | } |
0cc30e0e | 704 | #endif |
a9390b9f | 705 | |
bd021f39 PS |
706 | int strbuf_appendwholeline(struct strbuf *sb, FILE *fp, int term) |
707 | { | |
708 | struct strbuf line = STRBUF_INIT; | |
709 | if (strbuf_getwholeline(&line, fp, term)) | |
710 | return EOF; | |
711 | strbuf_addbuf(sb, &line); | |
712 | strbuf_release(&line); | |
713 | return 0; | |
714 | } | |
715 | ||
1a0c8dfd | 716 | static int strbuf_getdelim(struct strbuf *sb, FILE *fp, int term) |
c7e4f0d7 BC |
717 | { |
718 | if (strbuf_getwholeline(sb, fp, term)) | |
719 | return EOF; | |
dce80bd1 JH |
720 | if (sb->buf[sb->len - 1] == term) |
721 | strbuf_setlen(sb, sb->len - 1); | |
c7e4f0d7 BC |
722 | return 0; |
723 | } | |
724 | ||
1a0c8dfd | 725 | int strbuf_getline(struct strbuf *sb, FILE *fp) |
c8aa9fdf JH |
726 | { |
727 | if (strbuf_getwholeline(sb, fp, '\n')) | |
728 | return EOF; | |
729 | if (sb->buf[sb->len - 1] == '\n') { | |
730 | strbuf_setlen(sb, sb->len - 1); | |
731 | if (sb->len && sb->buf[sb->len - 1] == '\r') | |
732 | strbuf_setlen(sb, sb->len - 1); | |
733 | } | |
734 | return 0; | |
735 | } | |
736 | ||
8f309aeb JH |
737 | int strbuf_getline_lf(struct strbuf *sb, FILE *fp) |
738 | { | |
1a0c8dfd | 739 | return strbuf_getdelim(sb, fp, '\n'); |
8f309aeb JH |
740 | } |
741 | ||
742 | int strbuf_getline_nul(struct strbuf *sb, FILE *fp) | |
743 | { | |
1a0c8dfd | 744 | return strbuf_getdelim(sb, fp, '\0'); |
8f309aeb JH |
745 | } |
746 | ||
5e8617f5 TR |
747 | int strbuf_getwholeline_fd(struct strbuf *sb, int fd, int term) |
748 | { | |
749 | strbuf_reset(sb); | |
750 | ||
751 | while (1) { | |
752 | char ch; | |
753 | ssize_t len = xread(fd, &ch, 1); | |
754 | if (len <= 0) | |
755 | return EOF; | |
756 | strbuf_addch(sb, ch); | |
757 | if (ch == term) | |
758 | break; | |
759 | } | |
760 | return 0; | |
761 | } | |
762 | ||
6c8afe49 | 763 | ssize_t strbuf_read_file(struct strbuf *sb, const char *path, size_t hint) |
a9390b9f | 764 | { |
6c8afe49 MH |
765 | int fd; |
766 | ssize_t len; | |
79f0ba15 | 767 | int saved_errno; |
a9390b9f KH |
768 | |
769 | fd = open(path, O_RDONLY); | |
770 | if (fd < 0) | |
771 | return -1; | |
387e7e19 | 772 | len = strbuf_read(sb, fd, hint); |
79f0ba15 | 773 | saved_errno = errno; |
a9390b9f | 774 | close(fd); |
79f0ba15 JK |
775 | if (len < 0) { |
776 | errno = saved_errno; | |
a9390b9f | 777 | return -1; |
79f0ba15 | 778 | } |
a9390b9f KH |
779 | |
780 | return len; | |
781 | } | |
895680f0 JH |
782 | |
783 | void strbuf_add_lines(struct strbuf *out, const char *prefix, | |
784 | const char *buf, size_t size) | |
785 | { | |
eff80a9f | 786 | add_lines(out, prefix, NULL, buf, size); |
895680f0 | 787 | } |
367d20ec | 788 | |
5963c036 MH |
789 | void strbuf_addstr_xml_quoted(struct strbuf *buf, const char *s) |
790 | { | |
791 | while (*s) { | |
792 | size_t len = strcspn(s, "\"<>&"); | |
793 | strbuf_add(buf, s, len); | |
794 | s += len; | |
795 | switch (*s) { | |
796 | case '"': | |
797 | strbuf_addstr(buf, """); | |
798 | break; | |
799 | case '<': | |
800 | strbuf_addstr(buf, "<"); | |
801 | break; | |
802 | case '>': | |
803 | strbuf_addstr(buf, ">"); | |
804 | break; | |
805 | case '&': | |
806 | strbuf_addstr(buf, "&"); | |
807 | break; | |
808 | case 0: | |
809 | return; | |
810 | } | |
811 | s++; | |
812 | } | |
813 | } | |
814 | ||
c2694952 | 815 | int is_rfc3986_reserved_or_unreserved(char ch) |
c505116b | 816 | { |
c2694952 MD |
817 | if (is_rfc3986_unreserved(ch)) |
818 | return 1; | |
c505116b JK |
819 | switch (ch) { |
820 | case '!': case '*': case '\'': case '(': case ')': case ';': | |
821 | case ':': case '@': case '&': case '=': case '+': case '$': | |
822 | case ',': case '/': case '?': case '#': case '[': case ']': | |
823 | return 1; | |
824 | } | |
825 | return 0; | |
826 | } | |
827 | ||
c2694952 | 828 | int is_rfc3986_unreserved(char ch) |
c505116b JK |
829 | { |
830 | return isalnum(ch) || | |
831 | ch == '-' || ch == '_' || ch == '.' || ch == '~'; | |
832 | } | |
833 | ||
ea03a8e1 | 834 | static void strbuf_add_urlencode(struct strbuf *sb, const char *s, size_t len, |
c2694952 | 835 | char_predicate allow_unencoded_fn) |
c505116b JK |
836 | { |
837 | strbuf_grow(sb, len); | |
838 | while (len--) { | |
839 | char ch = *s++; | |
c2694952 | 840 | if (allow_unencoded_fn(ch)) |
c505116b JK |
841 | strbuf_addch(sb, ch); |
842 | else | |
4c267f2a | 843 | strbuf_addf(sb, "%%%02x", (unsigned char)ch); |
c505116b JK |
844 | } |
845 | } | |
846 | ||
847 | void strbuf_addstr_urlencode(struct strbuf *sb, const char *s, | |
c2694952 | 848 | char_predicate allow_unencoded_fn) |
c505116b | 849 | { |
c2694952 | 850 | strbuf_add_urlencode(sb, s, strlen(s), allow_unencoded_fn); |
c505116b | 851 | } |
9a0a30aa | 852 | |
8f354a1f DR |
853 | static void strbuf_humanise(struct strbuf *buf, off_t bytes, |
854 | int humanise_rate) | |
079b546a AP |
855 | { |
856 | if (bytes > 1 << 30) { | |
8f354a1f DR |
857 | strbuf_addf(buf, |
858 | humanise_rate == 0 ? | |
859 | /* TRANSLATORS: IEC 80000-13:2008 gibibyte */ | |
860 | _("%u.%2.2u GiB") : | |
861 | /* TRANSLATORS: IEC 80000-13:2008 gibibyte/second */ | |
862 | _("%u.%2.2u GiB/s"), | |
7726d360 JK |
863 | (unsigned)(bytes >> 30), |
864 | (unsigned)(bytes & ((1 << 30) - 1)) / 10737419); | |
079b546a | 865 | } else if (bytes > 1 << 20) { |
7726d360 | 866 | unsigned x = bytes + 5243; /* for rounding */ |
8f354a1f DR |
867 | strbuf_addf(buf, |
868 | humanise_rate == 0 ? | |
869 | /* TRANSLATORS: IEC 80000-13:2008 mebibyte */ | |
870 | _("%u.%2.2u MiB") : | |
871 | /* TRANSLATORS: IEC 80000-13:2008 mebibyte/second */ | |
872 | _("%u.%2.2u MiB/s"), | |
079b546a AP |
873 | x >> 20, ((x & ((1 << 20) - 1)) * 100) >> 20); |
874 | } else if (bytes > 1 << 10) { | |
7726d360 | 875 | unsigned x = bytes + 5; /* for rounding */ |
8f354a1f DR |
876 | strbuf_addf(buf, |
877 | humanise_rate == 0 ? | |
878 | /* TRANSLATORS: IEC 80000-13:2008 kibibyte */ | |
879 | _("%u.%2.2u KiB") : | |
880 | /* TRANSLATORS: IEC 80000-13:2008 kibibyte/second */ | |
881 | _("%u.%2.2u KiB/s"), | |
079b546a AP |
882 | x >> 10, ((x & ((1 << 10) - 1)) * 100) >> 10); |
883 | } else { | |
8f354a1f DR |
884 | strbuf_addf(buf, |
885 | humanise_rate == 0 ? | |
886 | /* TRANSLATORS: IEC 80000-13:2008 byte */ | |
6f693252 | 887 | Q_("%u byte", "%u bytes", bytes) : |
8f354a1f | 888 | /* TRANSLATORS: IEC 80000-13:2008 byte/second */ |
6f693252 | 889 | Q_("%u byte/s", "%u bytes/s", bytes), |
8f354a1f | 890 | (unsigned)bytes); |
079b546a AP |
891 | } |
892 | } | |
893 | ||
8f354a1f DR |
894 | void strbuf_humanise_bytes(struct strbuf *buf, off_t bytes) |
895 | { | |
896 | strbuf_humanise(buf, bytes, 0); | |
897 | } | |
898 | ||
899 | void strbuf_humanise_rate(struct strbuf *buf, off_t bytes) | |
900 | { | |
901 | strbuf_humanise(buf, bytes, 1); | |
902 | } | |
903 | ||
679eebe2 RS |
904 | void strbuf_add_absolute_path(struct strbuf *sb, const char *path) |
905 | { | |
906 | if (!*path) | |
907 | die("The empty string is not a valid path"); | |
908 | if (!is_absolute_path(path)) { | |
909 | struct stat cwd_stat, pwd_stat; | |
910 | size_t orig_len = sb->len; | |
911 | char *cwd = xgetcwd(); | |
912 | char *pwd = getenv("PWD"); | |
913 | if (pwd && strcmp(pwd, cwd) && | |
914 | !stat(cwd, &cwd_stat) && | |
915 | (cwd_stat.st_dev || cwd_stat.st_ino) && | |
916 | !stat(pwd, &pwd_stat) && | |
917 | pwd_stat.st_dev == cwd_stat.st_dev && | |
918 | pwd_stat.st_ino == cwd_stat.st_ino) | |
919 | strbuf_addstr(sb, pwd); | |
920 | else | |
921 | strbuf_addstr(sb, cwd); | |
922 | if (sb->len > orig_len && !is_dir_sep(sb->buf[sb->len - 1])) | |
923 | strbuf_addch(sb, '/'); | |
924 | free(cwd); | |
925 | } | |
926 | strbuf_addstr(sb, path); | |
927 | } | |
928 | ||
33ad9ddd RS |
929 | void strbuf_add_real_path(struct strbuf *sb, const char *path) |
930 | { | |
931 | if (sb->len) { | |
932 | struct strbuf resolved = STRBUF_INIT; | |
933 | strbuf_realpath(&resolved, path, 1); | |
934 | strbuf_addbuf(sb, &resolved); | |
935 | strbuf_release(&resolved); | |
936 | } else | |
937 | strbuf_realpath(sb, path, 1); | |
938 | } | |
939 | ||
9a0a30aa NTND |
940 | int printf_ln(const char *fmt, ...) |
941 | { | |
942 | int ret; | |
943 | va_list ap; | |
944 | va_start(ap, fmt); | |
945 | ret = vprintf(fmt, ap); | |
946 | va_end(ap); | |
947 | if (ret < 0 || putchar('\n') == EOF) | |
948 | return -1; | |
949 | return ret + 1; | |
950 | } | |
951 | ||
952 | int fprintf_ln(FILE *fp, const char *fmt, ...) | |
953 | { | |
954 | int ret; | |
955 | va_list ap; | |
956 | va_start(ap, fmt); | |
957 | ret = vfprintf(fp, fmt, ap); | |
958 | va_end(ap); | |
959 | if (ret < 0 || putc('\n', fp) == EOF) | |
960 | return -1; | |
961 | return ret + 1; | |
962 | } | |
88d5a6f6 JK |
963 | |
964 | char *xstrdup_tolower(const char *string) | |
965 | { | |
966 | char *result; | |
967 | size_t len, i; | |
968 | ||
969 | len = strlen(string); | |
3733e694 | 970 | result = xmallocz(len); |
88d5a6f6 JK |
971 | for (i = 0; i < len; i++) |
972 | result[i] = tolower(string[i]); | |
88d5a6f6 JK |
973 | return result; |
974 | } | |
30a0ddb7 | 975 | |
13ecb463 LS |
976 | char *xstrdup_toupper(const char *string) |
977 | { | |
978 | char *result; | |
979 | size_t len, i; | |
980 | ||
981 | len = strlen(string); | |
982 | result = xmallocz(len); | |
983 | for (i = 0; i < len; i++) | |
984 | result[i] = toupper(string[i]); | |
88d5a6f6 JK |
985 | return result; |
986 | } | |
30a0ddb7 JK |
987 | |
988 | char *xstrvfmt(const char *fmt, va_list ap) | |
989 | { | |
990 | struct strbuf buf = STRBUF_INIT; | |
991 | strbuf_vaddf(&buf, fmt, ap); | |
992 | return strbuf_detach(&buf, NULL); | |
993 | } | |
994 | ||
995 | char *xstrfmt(const char *fmt, ...) | |
996 | { | |
997 | va_list ap; | |
998 | char *ret; | |
999 | ||
1000 | va_start(ap, fmt); | |
1001 | ret = xstrvfmt(fmt, ap); | |
1002 | va_end(ap); | |
1003 | ||
1004 | return ret; | |
1005 | } | |
aa1462cc | 1006 | |
c3fbf81a | 1007 | void strbuf_addftime(struct strbuf *sb, const char *fmt, const struct tm *tm, |
3b702239 | 1008 | int tz_offset, int suppress_tz_name) |
aa1462cc | 1009 | { |
c3fbf81a | 1010 | struct strbuf munged_fmt = STRBUF_INIT; |
e4f031e3 | 1011 | size_t hint = 128; |
aa1462cc JK |
1012 | size_t len; |
1013 | ||
e4f031e3 JK |
1014 | if (!*fmt) |
1015 | return; | |
1016 | ||
c3fbf81a RS |
1017 | /* |
1018 | * There is no portable way to pass timezone information to | |
9b591b94 JK |
1019 | * strftime, so we handle %z and %Z here. Likewise '%s', because |
1020 | * going back to an epoch time requires knowing the zone. | |
1021 | * | |
1022 | * Note that tz_offset is in the "[-+]HHMM" decimal form; this is what | |
1023 | * we want for %z, but the computation for %s has to convert to number | |
1024 | * of seconds. | |
c3fbf81a RS |
1025 | */ |
1026 | for (;;) { | |
1027 | const char *percent = strchrnul(fmt, '%'); | |
1028 | strbuf_add(&munged_fmt, fmt, percent - fmt); | |
1029 | if (!*percent) | |
1030 | break; | |
1031 | fmt = percent + 1; | |
1032 | switch (*fmt) { | |
1033 | case '%': | |
1034 | strbuf_addstr(&munged_fmt, "%%"); | |
1035 | fmt++; | |
1036 | break; | |
9b591b94 JK |
1037 | case 's': |
1038 | strbuf_addf(&munged_fmt, "%"PRItime, | |
1039 | (timestamp_t)tm_to_time_t(tm) - | |
1040 | 3600 * (tz_offset / 100) - | |
1041 | 60 * (tz_offset % 100)); | |
1042 | fmt++; | |
1043 | break; | |
c3fbf81a RS |
1044 | case 'z': |
1045 | strbuf_addf(&munged_fmt, "%+05d", tz_offset); | |
1046 | fmt++; | |
1047 | break; | |
1048 | case 'Z': | |
3b702239 | 1049 | if (suppress_tz_name) { |
c3fbf81a RS |
1050 | fmt++; |
1051 | break; | |
1052 | } | |
1053 | /* FALLTHROUGH */ | |
1054 | default: | |
1055 | strbuf_addch(&munged_fmt, '%'); | |
1056 | } | |
1057 | } | |
1058 | fmt = munged_fmt.buf; | |
1059 | ||
e4f031e3 | 1060 | strbuf_grow(sb, hint); |
aa1462cc JK |
1061 | len = strftime(sb->buf + sb->len, sb->alloc - sb->len, fmt, tm); |
1062 | ||
1063 | if (!len) { | |
1064 | /* | |
e4f031e3 JK |
1065 | * strftime reports "0" if it could not fit the result in the buffer. |
1066 | * Unfortunately, it also reports "0" if the requested time string | |
1067 | * takes 0 bytes. So our strategy is to munge the format so that the | |
1068 | * output contains at least one character, and then drop the extra | |
1069 | * character before returning. | |
aa1462cc | 1070 | */ |
c3fbf81a | 1071 | strbuf_addch(&munged_fmt, ' '); |
e4f031e3 JK |
1072 | while (!len) { |
1073 | hint *= 2; | |
1074 | strbuf_grow(sb, hint); | |
1075 | len = strftime(sb->buf + sb->len, sb->alloc - sb->len, | |
1076 | munged_fmt.buf, tm); | |
1077 | } | |
e4f031e3 | 1078 | len--; /* drop munged space */ |
aa1462cc | 1079 | } |
c3fbf81a | 1080 | strbuf_release(&munged_fmt); |
e4f031e3 | 1081 | strbuf_setlen(sb, sb->len + len); |
aa1462cc | 1082 | } |
af49c6d0 | 1083 | |
155b517d JT |
1084 | void strbuf_repo_add_unique_abbrev(struct strbuf *sb, struct repository *repo, |
1085 | const struct object_id *oid, int abbrev_len) | |
af49c6d0 JK |
1086 | { |
1087 | int r; | |
4b048c91 | 1088 | strbuf_grow(sb, GIT_MAX_HEXSZ + 1); |
155b517d | 1089 | r = repo_find_unique_abbrev_r(repo, sb->buf + sb->len, oid, abbrev_len); |
af49c6d0 JK |
1090 | strbuf_setlen(sb, sb->len + r); |
1091 | } | |
1ad7c0f6 | 1092 | |
155b517d JT |
1093 | void strbuf_add_unique_abbrev(struct strbuf *sb, const struct object_id *oid, |
1094 | int abbrev_len) | |
1095 | { | |
1096 | strbuf_repo_add_unique_abbrev(sb, the_repository, oid, abbrev_len); | |
1097 | } | |
1098 | ||
63af4a84 TK |
1099 | /* |
1100 | * Returns the length of a line, without trailing spaces. | |
1101 | * | |
1102 | * If the line ends with newline, it will be removed too. | |
1103 | */ | |
1104 | static size_t cleanup(char *line, size_t len) | |
1105 | { | |
1106 | while (len) { | |
1107 | unsigned char c = line[len - 1]; | |
1108 | if (!isspace(c)) | |
1109 | break; | |
1110 | len--; | |
1111 | } | |
1112 | ||
1113 | return len; | |
1114 | } | |
1115 | ||
1116 | /* | |
1117 | * Remove empty lines from the beginning and end | |
1118 | * and also trailing spaces from every line. | |
1119 | * | |
1120 | * Turn multiple consecutive empty lines between paragraphs | |
1121 | * into just one empty line. | |
1122 | * | |
1123 | * If the input has only empty lines and spaces, | |
1124 | * no output will be produced. | |
1125 | * | |
1126 | * If last line does not have a newline at the end, one is added. | |
1127 | * | |
1128 | * Enable skip_comments to skip every line starting with comment | |
1129 | * character. | |
1130 | */ | |
1131 | void strbuf_stripspace(struct strbuf *sb, int skip_comments) | |
1132 | { | |
26114c00 | 1133 | size_t empties = 0; |
63af4a84 TK |
1134 | size_t i, j, len, newlen; |
1135 | char *eol; | |
1136 | ||
1137 | /* We may have to add a newline. */ | |
1138 | strbuf_grow(sb, 1); | |
1139 | ||
1140 | for (i = j = 0; i < sb->len; i += len, j += newlen) { | |
1141 | eol = memchr(sb->buf + i, '\n', sb->len - i); | |
1142 | len = eol ? eol - (sb->buf + i) + 1 : sb->len - i; | |
1143 | ||
1144 | if (skip_comments && len && sb->buf[i] == comment_line_char) { | |
1145 | newlen = 0; | |
1146 | continue; | |
1147 | } | |
1148 | newlen = cleanup(sb->buf + i, len); | |
1149 | ||
1150 | /* Not just an empty line? */ | |
1151 | if (newlen) { | |
1152 | if (empties > 0 && j > 0) | |
1153 | sb->buf[j++] = '\n'; | |
1154 | empties = 0; | |
1155 | memmove(sb->buf + j, sb->buf + i, newlen); | |
1156 | sb->buf[newlen + j++] = '\n'; | |
1157 | } else { | |
1158 | empties++; | |
1159 | } | |
1160 | } | |
1161 | ||
1162 | strbuf_setlen(sb, j); | |
1163 | } | |
670c359d JK |
1164 | |
1165 | int strbuf_normalize_path(struct strbuf *src) | |
1166 | { | |
1167 | struct strbuf dst = STRBUF_INIT; | |
1168 | ||
1169 | strbuf_grow(&dst, src->len); | |
1170 | if (normalize_path_copy(dst.buf, src->buf) < 0) { | |
1171 | strbuf_release(&dst); | |
1172 | return -1; | |
1173 | } | |
1174 | ||
1175 | /* | |
1176 | * normalize_path does not tell us the new length, so we have to | |
1177 | * compute it by looking for the new NUL it placed | |
1178 | */ | |
1179 | strbuf_setlen(&dst, strlen(dst.buf)); | |
1180 | strbuf_swap(src, &dst); | |
1181 | strbuf_release(&dst); | |
1182 | return 0; | |
1183 | } | |
b38dd9e7 | 1184 | |
9ea57964 DS |
1185 | void strbuf_strip_file_from_path(struct strbuf *sb) |
1186 | { | |
1187 | char *path_sep = find_last_dir_sep(sb->buf); | |
1188 | strbuf_setlen(sb, path_sep ? path_sep - sb->buf + 1 : 0); | |
1189 | } |