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Commit | Line | Data |
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a6dc3d36 | 1 | #include "cache.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" |
f6f77559 | 9 | #include "string-list.h" |
d4241f52 | 10 | #include "utf8.h" |
88c7b4c3 | 11 | #include "date.h" |
d5ebb50d | 12 | #include "wrapper.h" |
d1df5743 | 13 | |
95662315 CC |
14 | int starts_with(const char *str, const char *prefix) |
15 | { | |
16 | for (; ; str++, prefix++) | |
17 | if (!*prefix) | |
18 | return 1; | |
19 | else if (*str != *prefix) | |
20 | return 0; | |
21 | } | |
22 | ||
66b8af3e LS |
23 | int istarts_with(const char *str, const char *prefix) |
24 | { | |
25 | for (; ; str++, prefix++) | |
26 | if (!*prefix) | |
27 | return 1; | |
28 | else if (tolower(*str) != tolower(*prefix)) | |
29 | return 0; | |
30 | } | |
31 | ||
afaef55e CC |
32 | int skip_to_optional_arg_default(const char *str, const char *prefix, |
33 | const char **arg, const char *def) | |
34 | { | |
35 | const char *p; | |
36 | ||
37 | if (!skip_prefix(str, prefix, &p)) | |
38 | return 0; | |
39 | ||
40 | if (!*p) { | |
41 | if (arg) | |
42 | *arg = def; | |
43 | return 1; | |
44 | } | |
45 | ||
46 | if (*p != '=') | |
47 | return 0; | |
48 | ||
49 | if (arg) | |
50 | *arg = p + 1; | |
51 | return 1; | |
52 | } | |
53 | ||
b315c5c0 PH |
54 | /* |
55 | * Used as the default ->buf value, so that people can always assume | |
56 | * buf is non NULL and ->buf is NUL terminated even for a freshly | |
57 | * initialized strbuf. | |
58 | */ | |
59 | char strbuf_slopbuf[1]; | |
60 | ||
917c9a71 PH |
61 | void strbuf_init(struct strbuf *sb, size_t hint) |
62 | { | |
5726a6b4 ÆAB |
63 | struct strbuf blank = STRBUF_INIT; |
64 | memcpy(sb, &blank, sizeof(*sb)); | |
8c74ef1e | 65 | if (hint) |
f1696ee3 | 66 | strbuf_grow(sb, hint); |
d1df5743 JH |
67 | } |
68 | ||
917c9a71 PH |
69 | void strbuf_release(struct strbuf *sb) |
70 | { | |
b315c5c0 PH |
71 | if (sb->alloc) { |
72 | free(sb->buf); | |
73 | strbuf_init(sb, 0); | |
74 | } | |
b449f4cf PH |
75 | } |
76 | ||
b315c5c0 | 77 | char *strbuf_detach(struct strbuf *sb, size_t *sz) |
917c9a71 | 78 | { |
08ad56f3 JK |
79 | char *res; |
80 | strbuf_grow(sb, 0); | |
81 | res = sb->buf; | |
b315c5c0 PH |
82 | if (sz) |
83 | *sz = sb->len; | |
f1696ee3 | 84 | strbuf_init(sb, 0); |
b449f4cf PH |
85 | return res; |
86 | } | |
87 | ||
917c9a71 PH |
88 | void strbuf_attach(struct strbuf *sb, void *buf, size_t len, size_t alloc) |
89 | { | |
90 | strbuf_release(sb); | |
91 | sb->buf = buf; | |
92 | sb->len = len; | |
93 | sb->alloc = alloc; | |
94 | strbuf_grow(sb, 0); | |
95 | sb->buf[sb->len] = '\0'; | |
96 | } | |
97 | ||
98 | void strbuf_grow(struct strbuf *sb, size_t extra) | |
99 | { | |
8c74ef1e | 100 | int new_buf = !sb->alloc; |
1368f650 JN |
101 | if (unsigned_add_overflows(extra, 1) || |
102 | unsigned_add_overflows(sb->len, extra + 1)) | |
b449f4cf | 103 | die("you want to use way too much memory"); |
8c74ef1e | 104 | if (new_buf) |
b315c5c0 | 105 | sb->buf = NULL; |
b449f4cf | 106 | ALLOC_GROW(sb->buf, sb->len + extra + 1, sb->alloc); |
8c74ef1e TR |
107 | if (new_buf) |
108 | sb->buf[0] = '\0'; | |
b449f4cf PH |
109 | } |
110 | ||
eacd6dc5 LS |
111 | void strbuf_trim(struct strbuf *sb) |
112 | { | |
3bb55e8a BG |
113 | strbuf_rtrim(sb); |
114 | strbuf_ltrim(sb); | |
eacd6dc5 | 115 | } |
c64a8d20 | 116 | |
f1696ee3 PH |
117 | void strbuf_rtrim(struct strbuf *sb) |
118 | { | |
119 | while (sb->len > 0 && isspace((unsigned char)sb->buf[sb->len - 1])) | |
120 | sb->len--; | |
121 | sb->buf[sb->len] = '\0'; | |
122 | } | |
123 | ||
c64a8d20 NTND |
124 | void strbuf_trim_trailing_dir_sep(struct strbuf *sb) |
125 | { | |
126 | while (sb->len > 0 && is_dir_sep((unsigned char)sb->buf[sb->len - 1])) | |
127 | sb->len--; | |
128 | sb->buf[sb->len] = '\0'; | |
129 | } | |
130 | ||
f9573628 PK |
131 | void strbuf_trim_trailing_newline(struct strbuf *sb) |
132 | { | |
133 | if (sb->len > 0 && sb->buf[sb->len - 1] == '\n') { | |
134 | if (--sb->len > 0 && sb->buf[sb->len - 1] == '\r') | |
135 | --sb->len; | |
136 | sb->buf[sb->len] = '\0'; | |
137 | } | |
138 | } | |
139 | ||
eacd6dc5 LS |
140 | void strbuf_ltrim(struct strbuf *sb) |
141 | { | |
142 | char *b = sb->buf; | |
143 | while (sb->len > 0 && isspace(*b)) { | |
144 | b++; | |
145 | sb->len--; | |
146 | } | |
147 | memmove(sb->buf, b, sb->len); | |
148 | sb->buf[sb->len] = '\0'; | |
149 | } | |
150 | ||
d4241f52 JK |
151 | int strbuf_reencode(struct strbuf *sb, const char *from, const char *to) |
152 | { | |
153 | char *out; | |
c7d017d7 | 154 | size_t len; |
d4241f52 JK |
155 | |
156 | if (same_encoding(from, to)) | |
157 | return 0; | |
158 | ||
159 | out = reencode_string_len(sb->buf, sb->len, to, from, &len); | |
160 | if (!out) | |
161 | return -1; | |
162 | ||
163 | strbuf_attach(sb, out, len, len); | |
164 | return 0; | |
165 | } | |
166 | ||
ffb20ce1 JK |
167 | void strbuf_tolower(struct strbuf *sb) |
168 | { | |
169 | char *p = sb->buf, *end = sb->buf + sb->len; | |
170 | for (; p < end; p++) | |
171 | *p = tolower(*p); | |
172 | } | |
173 | ||
17b73dc6 MH |
174 | struct strbuf **strbuf_split_buf(const char *str, size_t slen, |
175 | int terminator, int max) | |
eacd6dc5 | 176 | { |
b8c2c1fa MH |
177 | struct strbuf **ret = NULL; |
178 | size_t nr = 0, alloc = 0; | |
eacd6dc5 LS |
179 | struct strbuf *t; |
180 | ||
1173bb33 MH |
181 | while (slen) { |
182 | int len = slen; | |
183 | if (max <= 0 || nr + 1 < max) { | |
17b73dc6 | 184 | const char *end = memchr(str, terminator, slen); |
1173bb33 MH |
185 | if (end) |
186 | len = end - str + 1; | |
187 | } | |
eacd6dc5 LS |
188 | t = xmalloc(sizeof(struct strbuf)); |
189 | strbuf_init(t, len); | |
1173bb33 | 190 | strbuf_add(t, str, len); |
b8c2c1fa MH |
191 | ALLOC_GROW(ret, nr + 2, alloc); |
192 | ret[nr++] = t; | |
1173bb33 MH |
193 | str += len; |
194 | slen -= len; | |
eacd6dc5 | 195 | } |
b8c2c1fa MH |
196 | ALLOC_GROW(ret, nr + 1, alloc); /* In case string was empty */ |
197 | ret[nr] = NULL; | |
eacd6dc5 LS |
198 | return ret; |
199 | } | |
200 | ||
f6f77559 EN |
201 | void strbuf_add_separated_string_list(struct strbuf *str, |
202 | const char *sep, | |
203 | struct string_list *slist) | |
204 | { | |
205 | struct string_list_item *item; | |
206 | int sep_needed = 0; | |
207 | ||
208 | for_each_string_list_item(item, slist) { | |
209 | if (sep_needed) | |
210 | strbuf_addstr(str, sep); | |
211 | strbuf_addstr(str, item->string); | |
212 | sep_needed = 1; | |
213 | } | |
214 | } | |
215 | ||
eacd6dc5 LS |
216 | void strbuf_list_free(struct strbuf **sbs) |
217 | { | |
218 | struct strbuf **s = sbs; | |
219 | ||
f3a96807 AH |
220 | if (!s) |
221 | return; | |
eacd6dc5 LS |
222 | while (*s) { |
223 | strbuf_release(*s); | |
224 | free(*s++); | |
225 | } | |
226 | free(sbs); | |
227 | } | |
228 | ||
9b200fd6 | 229 | int strbuf_cmp(const struct strbuf *a, const struct strbuf *b) |
45f66f64 | 230 | { |
26114c00 | 231 | size_t len = a->len < b->len ? a->len: b->len; |
8f024655 AR |
232 | int cmp = memcmp(a->buf, b->buf, len); |
233 | if (cmp) | |
234 | return cmp; | |
235 | return a->len < b->len ? -1: a->len != b->len; | |
45f66f64 PH |
236 | } |
237 | ||
917c9a71 PH |
238 | void strbuf_splice(struct strbuf *sb, size_t pos, size_t len, |
239 | const void *data, size_t dlen) | |
240 | { | |
1368f650 | 241 | if (unsigned_add_overflows(pos, len)) |
917c9a71 PH |
242 | die("you want to use way too much memory"); |
243 | if (pos > sb->len) | |
244 | die("`pos' is too far after the end of the buffer"); | |
245 | if (pos + len > sb->len) | |
246 | die("`pos + len' is too far after the end of the buffer"); | |
247 | ||
248 | if (dlen >= len) | |
249 | strbuf_grow(sb, dlen - len); | |
250 | memmove(sb->buf + pos + dlen, | |
251 | sb->buf + pos + len, | |
252 | sb->len - pos - len); | |
253 | memcpy(sb->buf + pos, data, dlen); | |
254 | strbuf_setlen(sb, sb->len + dlen - len); | |
255 | } | |
256 | ||
c76689df PH |
257 | void strbuf_insert(struct strbuf *sb, size_t pos, const void *data, size_t len) |
258 | { | |
259 | strbuf_splice(sb, pos, 0, data, len); | |
260 | } | |
261 | ||
5ef264db PSU |
262 | void strbuf_vinsertf(struct strbuf *sb, size_t pos, const char *fmt, va_list ap) |
263 | { | |
264 | int len, len2; | |
265 | char save; | |
266 | va_list cp; | |
267 | ||
268 | if (pos > sb->len) | |
269 | die("`pos' is too far after the end of the buffer"); | |
270 | va_copy(cp, ap); | |
271 | len = vsnprintf(sb->buf + sb->len, 0, fmt, cp); | |
272 | va_end(cp); | |
273 | if (len < 0) | |
274 | BUG("your vsnprintf is broken (returned %d)", len); | |
275 | if (!len) | |
276 | return; /* nothing to do */ | |
277 | if (unsigned_add_overflows(sb->len, len)) | |
278 | die("you want to use way too much memory"); | |
279 | strbuf_grow(sb, len); | |
280 | memmove(sb->buf + pos + len, sb->buf + pos, sb->len - pos); | |
281 | /* vsnprintf() will append a NUL, overwriting one of our characters */ | |
282 | save = sb->buf[pos + len]; | |
283 | len2 = vsnprintf(sb->buf + pos, len + 1, fmt, ap); | |
284 | sb->buf[pos + len] = save; | |
285 | if (len2 != len) | |
286 | BUG("your vsnprintf is broken (returns inconsistent lengths)"); | |
287 | strbuf_setlen(sb, sb->len + len); | |
288 | } | |
289 | ||
290 | void strbuf_insertf(struct strbuf *sb, size_t pos, const char *fmt, ...) | |
291 | { | |
292 | va_list ap; | |
293 | va_start(ap, fmt); | |
294 | strbuf_vinsertf(sb, pos, fmt, ap); | |
295 | va_end(ap); | |
296 | } | |
297 | ||
c76689df PH |
298 | void strbuf_remove(struct strbuf *sb, size_t pos, size_t len) |
299 | { | |
a8342a41 | 300 | strbuf_splice(sb, pos, len, "", 0); |
c76689df PH |
301 | } |
302 | ||
917c9a71 PH |
303 | void strbuf_add(struct strbuf *sb, const void *data, size_t len) |
304 | { | |
b449f4cf PH |
305 | strbuf_grow(sb, len); |
306 | memcpy(sb->buf + sb->len, data, len); | |
307 | strbuf_setlen(sb, sb->len + len); | |
308 | } | |
309 | ||
31471ba2 RS |
310 | void strbuf_addbuf(struct strbuf *sb, const struct strbuf *sb2) |
311 | { | |
312 | strbuf_grow(sb, sb2->len); | |
313 | memcpy(sb->buf + sb->len, sb2->buf, sb2->len); | |
314 | strbuf_setlen(sb, sb->len + sb2->len); | |
315 | } | |
316 | ||
e71c4a88 PSU |
317 | const char *strbuf_join_argv(struct strbuf *buf, |
318 | int argc, const char **argv, char delim) | |
319 | { | |
320 | if (!argc) | |
321 | return buf->buf; | |
322 | ||
323 | strbuf_addstr(buf, *argv); | |
324 | while (--argc) { | |
325 | strbuf_addch(buf, delim); | |
326 | strbuf_addstr(buf, *(++argv)); | |
327 | } | |
328 | ||
329 | return buf->buf; | |
330 | } | |
331 | ||
d07235a0 RS |
332 | void strbuf_addchars(struct strbuf *sb, int c, size_t n) |
333 | { | |
334 | strbuf_grow(sb, n); | |
335 | memset(sb->buf + sb->len, c, n); | |
336 | strbuf_setlen(sb, sb->len + n); | |
337 | } | |
338 | ||
917c9a71 PH |
339 | void strbuf_addf(struct strbuf *sb, const char *fmt, ...) |
340 | { | |
b449f4cf | 341 | va_list ap; |
ebeb6090 JK |
342 | va_start(ap, fmt); |
343 | strbuf_vaddf(sb, fmt, ap); | |
344 | va_end(ap); | |
345 | } | |
346 | ||
eff80a9f JH |
347 | static void add_lines(struct strbuf *out, |
348 | const char *prefix1, | |
349 | const char *prefix2, | |
350 | const char *buf, size_t size) | |
351 | { | |
352 | while (size) { | |
353 | const char *prefix; | |
354 | const char *next = memchr(buf, '\n', size); | |
355 | next = next ? (next + 1) : (buf + size); | |
356 | ||
d55aeb76 JH |
357 | prefix = ((prefix2 && (buf[0] == '\n' || buf[0] == '\t')) |
358 | ? prefix2 : prefix1); | |
eff80a9f JH |
359 | strbuf_addstr(out, prefix); |
360 | strbuf_add(out, buf, next - buf); | |
361 | size -= next - buf; | |
362 | buf = next; | |
363 | } | |
364 | strbuf_complete_line(out); | |
365 | } | |
366 | ||
367 | void strbuf_add_commented_lines(struct strbuf *out, const char *buf, size_t size) | |
368 | { | |
369 | static char prefix1[3]; | |
370 | static char prefix2[2]; | |
371 | ||
372 | if (prefix1[0] != comment_line_char) { | |
5096d490 JK |
373 | xsnprintf(prefix1, sizeof(prefix1), "%c ", comment_line_char); |
374 | xsnprintf(prefix2, sizeof(prefix2), "%c", comment_line_char); | |
eff80a9f JH |
375 | } |
376 | add_lines(out, prefix1, prefix2, buf, size); | |
377 | } | |
378 | ||
379 | void strbuf_commented_addf(struct strbuf *sb, const char *fmt, ...) | |
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 | ||
389 | strbuf_add_commented_lines(sb, buf.buf, buf.len); | |
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 | ||
c3a670de MC |
417 | void strbuf_expand(struct strbuf *sb, const char *format, expand_fn_t fn, |
418 | void *context) | |
cde75e59 RS |
419 | { |
420 | for (;;) { | |
c3a670de MC |
421 | const char *percent; |
422 | size_t consumed; | |
cde75e59 RS |
423 | |
424 | percent = strchrnul(format, '%'); | |
425 | strbuf_add(sb, format, percent - format); | |
426 | if (!*percent) | |
427 | break; | |
428 | format = percent + 1; | |
429 | ||
0a0416a3 JK |
430 | if (*format == '%') { |
431 | strbuf_addch(sb, '%'); | |
432 | format++; | |
433 | continue; | |
434 | } | |
435 | ||
c3a670de MC |
436 | consumed = fn(sb, format, context); |
437 | if (consumed) | |
438 | format += consumed; | |
439 | else | |
cde75e59 RS |
440 | strbuf_addch(sb, '%'); |
441 | } | |
442 | } | |
443 | ||
fd2015b3 AW |
444 | size_t strbuf_expand_literal_cb(struct strbuf *sb, |
445 | const char *placeholder, | |
5cf88fd8 | 446 | void *context UNUSED) |
fd2015b3 AW |
447 | { |
448 | int ch; | |
449 | ||
450 | switch (placeholder[0]) { | |
451 | case 'n': /* newline */ | |
452 | strbuf_addch(sb, '\n'); | |
453 | return 1; | |
454 | case 'x': | |
455 | /* %x00 == NUL, %x0a == LF, etc. */ | |
456 | ch = hex2chr(placeholder + 1); | |
457 | if (ch < 0) | |
458 | return 0; | |
459 | strbuf_addch(sb, ch); | |
460 | return 3; | |
461 | } | |
462 | return 0; | |
463 | } | |
464 | ||
9b864e73 RS |
465 | size_t strbuf_expand_dict_cb(struct strbuf *sb, const char *placeholder, |
466 | void *context) | |
467 | { | |
468 | struct strbuf_expand_dict_entry *e = context; | |
469 | size_t len; | |
470 | ||
471 | for (; e->placeholder && (len = strlen(e->placeholder)); e++) { | |
472 | if (!strncmp(placeholder, e->placeholder, len)) { | |
473 | if (e->value) | |
474 | strbuf_addstr(sb, e->value); | |
475 | return len; | |
476 | } | |
477 | } | |
478 | return 0; | |
479 | } | |
480 | ||
361df5df JK |
481 | void strbuf_addbuf_percentquote(struct strbuf *dst, const struct strbuf *src) |
482 | { | |
26114c00 | 483 | size_t i, len = src->len; |
361df5df JK |
484 | |
485 | for (i = 0; i < len; i++) { | |
486 | if (src->buf[i] == '%') | |
487 | strbuf_addch(dst, '%'); | |
488 | strbuf_addch(dst, src->buf[i]); | |
489 | } | |
490 | } | |
491 | ||
b44d0118 | 492 | #define URL_UNSAFE_CHARS " <>\"%{}|\\^`:?#[]@!$&'()*+,;=" |
46fd7b39 | 493 | |
b44d0118 | 494 | void strbuf_add_percentencode(struct strbuf *dst, const char *src, int flags) |
46fd7b39 | 495 | { |
496 | size_t i, len = strlen(src); | |
497 | ||
498 | for (i = 0; i < len; i++) { | |
499 | unsigned char ch = src[i]; | |
b44d0118 | 500 | if (ch <= 0x1F || ch >= 0x7F || |
501 | (ch == '/' && (flags & STRBUF_ENCODE_SLASH)) || | |
502 | strchr(URL_UNSAFE_CHARS, ch)) | |
46fd7b39 | 503 | strbuf_addf(dst, "%%%02X", (unsigned char)ch); |
504 | else | |
505 | strbuf_addch(dst, ch); | |
506 | } | |
507 | } | |
508 | ||
917c9a71 PH |
509 | size_t strbuf_fread(struct strbuf *sb, size_t size, FILE *f) |
510 | { | |
b449f4cf | 511 | size_t res; |
2fc64700 | 512 | size_t oldalloc = sb->alloc; |
b449f4cf PH |
513 | |
514 | strbuf_grow(sb, size); | |
515 | res = fread(sb->buf + sb->len, 1, size, f); | |
2fc64700 | 516 | if (res > 0) |
b449f4cf | 517 | strbuf_setlen(sb, sb->len + res); |
6651c3f7 | 518 | else if (oldalloc == 0) |
2fc64700 | 519 | strbuf_release(sb); |
b449f4cf | 520 | return res; |
d1df5743 JH |
521 | } |
522 | ||
f1696ee3 | 523 | ssize_t strbuf_read(struct strbuf *sb, int fd, size_t hint) |
b449f4cf PH |
524 | { |
525 | size_t oldlen = sb->len; | |
2fc64700 | 526 | size_t oldalloc = sb->alloc; |
b449f4cf | 527 | |
f1696ee3 | 528 | strbuf_grow(sb, hint ? hint : 8192); |
b449f4cf | 529 | for (;;) { |
3ebbd00c JH |
530 | ssize_t want = sb->alloc - sb->len - 1; |
531 | ssize_t got = read_in_full(fd, sb->buf + sb->len, want); | |
b449f4cf | 532 | |
3ebbd00c | 533 | if (got < 0) { |
2fc64700 RS |
534 | if (oldalloc == 0) |
535 | strbuf_release(sb); | |
536 | else | |
537 | strbuf_setlen(sb, oldlen); | |
b449f4cf PH |
538 | return -1; |
539 | } | |
3ebbd00c JH |
540 | sb->len += got; |
541 | if (got < want) | |
b449f4cf | 542 | break; |
f1696ee3 | 543 | strbuf_grow(sb, 8192); |
b449f4cf PH |
544 | } |
545 | ||
546 | sb->buf[sb->len] = '\0'; | |
547 | return sb->len - oldlen; | |
d1df5743 JH |
548 | } |
549 | ||
b4e04fb6 SB |
550 | ssize_t strbuf_read_once(struct strbuf *sb, int fd, size_t hint) |
551 | { | |
c3ff8f6c | 552 | size_t oldalloc = sb->alloc; |
b4e04fb6 SB |
553 | ssize_t cnt; |
554 | ||
555 | strbuf_grow(sb, hint ? hint : 8192); | |
556 | cnt = xread(fd, sb->buf + sb->len, sb->alloc - sb->len - 1); | |
557 | if (cnt > 0) | |
558 | strbuf_setlen(sb, sb->len + cnt); | |
c3ff8f6c RS |
559 | else if (oldalloc == 0) |
560 | strbuf_release(sb); | |
b4e04fb6 SB |
561 | return cnt; |
562 | } | |
563 | ||
2dac9b56 SB |
564 | ssize_t strbuf_write(struct strbuf *sb, FILE *f) |
565 | { | |
566 | return sb->len ? fwrite(sb->buf, 1, sb->len, f) : 0; | |
567 | } | |
568 | ||
b11b7e13 LT |
569 | #define STRBUF_MAXLINK (2*PATH_MAX) |
570 | ||
571 | int strbuf_readlink(struct strbuf *sb, const char *path, size_t hint) | |
572 | { | |
2fc64700 RS |
573 | size_t oldalloc = sb->alloc; |
574 | ||
b11b7e13 LT |
575 | if (hint < 32) |
576 | hint = 32; | |
577 | ||
578 | while (hint < STRBUF_MAXLINK) { | |
f3e76ed2 | 579 | ssize_t len; |
b11b7e13 LT |
580 | |
581 | strbuf_grow(sb, hint); | |
582 | len = readlink(path, sb->buf, hint); | |
583 | if (len < 0) { | |
584 | if (errno != ERANGE) | |
585 | break; | |
586 | } else if (len < hint) { | |
587 | strbuf_setlen(sb, len); | |
588 | return 0; | |
589 | } | |
590 | ||
591 | /* .. the buffer was too small - try again */ | |
592 | hint *= 2; | |
593 | } | |
2fc64700 RS |
594 | if (oldalloc == 0) |
595 | strbuf_release(sb); | |
b11b7e13 LT |
596 | return -1; |
597 | } | |
598 | ||
f22a76e9 RS |
599 | int strbuf_getcwd(struct strbuf *sb) |
600 | { | |
601 | size_t oldalloc = sb->alloc; | |
602 | size_t guessed_len = 128; | |
603 | ||
604 | for (;; guessed_len *= 2) { | |
605 | strbuf_grow(sb, guessed_len); | |
606 | if (getcwd(sb->buf, sb->alloc)) { | |
607 | strbuf_setlen(sb, strlen(sb->buf)); | |
608 | return 0; | |
609 | } | |
a54e938e RS |
610 | |
611 | /* | |
612 | * If getcwd(3) is implemented as a syscall that falls | |
613 | * back to a regular lookup using readdir(3) etc. then | |
614 | * we may be able to avoid EACCES by providing enough | |
615 | * space to the syscall as it's not necessarily bound | |
616 | * to the same restrictions as the fallback. | |
617 | */ | |
618 | if (errno == EACCES && guessed_len < PATH_MAX) | |
619 | continue; | |
620 | ||
f22a76e9 RS |
621 | if (errno != ERANGE) |
622 | break; | |
623 | } | |
624 | if (oldalloc == 0) | |
625 | strbuf_release(sb); | |
626 | else | |
627 | strbuf_reset(sb); | |
628 | return -1; | |
629 | } | |
630 | ||
0cc30e0e JK |
631 | #ifdef HAVE_GETDELIM |
632 | int strbuf_getwholeline(struct strbuf *sb, FILE *fp, int term) | |
633 | { | |
634 | ssize_t r; | |
635 | ||
636 | if (feof(fp)) | |
637 | return EOF; | |
638 | ||
639 | strbuf_reset(sb); | |
640 | ||
641 | /* Translate slopbuf to NULL, as we cannot call realloc on it */ | |
642 | if (!sb->alloc) | |
643 | sb->buf = NULL; | |
642956cf | 644 | errno = 0; |
0cc30e0e JK |
645 | r = getdelim(&sb->buf, &sb->alloc, term, fp); |
646 | ||
647 | if (r > 0) { | |
648 | sb->len = r; | |
649 | return 0; | |
650 | } | |
651 | assert(r == -1); | |
652 | ||
653 | /* | |
654 | * Normally we would have called xrealloc, which will try to free | |
655 | * memory and recover. But we have no way to tell getdelim() to do so. | |
656 | * Worse, we cannot try to recover ENOMEM ourselves, because we have | |
657 | * no idea how many bytes were read by getdelim. | |
658 | * | |
659 | * Dying here is reasonable. It mirrors what xrealloc would do on | |
660 | * catastrophic memory failure. We skip the opportunity to free pack | |
661 | * memory and retry, but that's unlikely to help for a malloc small | |
662 | * enough to hold a single line of input, anyway. | |
663 | */ | |
664 | if (errno == ENOMEM) | |
665 | die("Out of memory, getdelim failed"); | |
666 | ||
b7090430 JK |
667 | /* |
668 | * Restore strbuf invariants; if getdelim left us with a NULL pointer, | |
669 | * we can just re-init, but otherwise we should make sure that our | |
670 | * length is empty, and that the result is NUL-terminated. | |
671 | */ | |
0cc30e0e JK |
672 | if (!sb->buf) |
673 | strbuf_init(sb, 0); | |
b7090430 JK |
674 | else |
675 | strbuf_reset(sb); | |
0cc30e0e JK |
676 | return EOF; |
677 | } | |
678 | #else | |
c7e4f0d7 | 679 | int strbuf_getwholeline(struct strbuf *sb, FILE *fp, int term) |
917c9a71 | 680 | { |
d1df5743 | 681 | int ch; |
e6c019d0 | 682 | |
e6c019d0 PH |
683 | if (feof(fp)) |
684 | return EOF; | |
b449f4cf PH |
685 | |
686 | strbuf_reset(sb); | |
82912d1d JK |
687 | flockfile(fp); |
688 | while ((ch = getc_unlocked(fp)) != EOF) { | |
f80c153b JK |
689 | if (!strbuf_avail(sb)) |
690 | strbuf_grow(sb, 1); | |
b449f4cf | 691 | sb->buf[sb->len++] = ch; |
c7e4f0d7 BC |
692 | if (ch == term) |
693 | break; | |
d1df5743 | 694 | } |
82912d1d | 695 | funlockfile(fp); |
e6c019d0 PH |
696 | if (ch == EOF && sb->len == 0) |
697 | return EOF; | |
b449f4cf | 698 | |
b449f4cf | 699 | sb->buf[sb->len] = '\0'; |
e6c019d0 | 700 | return 0; |
d1df5743 | 701 | } |
0cc30e0e | 702 | #endif |
a9390b9f | 703 | |
bd021f39 PS |
704 | int strbuf_appendwholeline(struct strbuf *sb, FILE *fp, int term) |
705 | { | |
706 | struct strbuf line = STRBUF_INIT; | |
707 | if (strbuf_getwholeline(&line, fp, term)) | |
708 | return EOF; | |
709 | strbuf_addbuf(sb, &line); | |
710 | strbuf_release(&line); | |
711 | return 0; | |
712 | } | |
713 | ||
1a0c8dfd | 714 | static int strbuf_getdelim(struct strbuf *sb, FILE *fp, int term) |
c7e4f0d7 BC |
715 | { |
716 | if (strbuf_getwholeline(sb, fp, term)) | |
717 | return EOF; | |
dce80bd1 JH |
718 | if (sb->buf[sb->len - 1] == term) |
719 | strbuf_setlen(sb, sb->len - 1); | |
c7e4f0d7 BC |
720 | return 0; |
721 | } | |
722 | ||
1a0c8dfd | 723 | int strbuf_getline(struct strbuf *sb, FILE *fp) |
c8aa9fdf JH |
724 | { |
725 | if (strbuf_getwholeline(sb, fp, '\n')) | |
726 | return EOF; | |
727 | if (sb->buf[sb->len - 1] == '\n') { | |
728 | strbuf_setlen(sb, sb->len - 1); | |
729 | if (sb->len && sb->buf[sb->len - 1] == '\r') | |
730 | strbuf_setlen(sb, sb->len - 1); | |
731 | } | |
732 | return 0; | |
733 | } | |
734 | ||
8f309aeb JH |
735 | int strbuf_getline_lf(struct strbuf *sb, FILE *fp) |
736 | { | |
1a0c8dfd | 737 | return strbuf_getdelim(sb, fp, '\n'); |
8f309aeb JH |
738 | } |
739 | ||
740 | int strbuf_getline_nul(struct strbuf *sb, FILE *fp) | |
741 | { | |
1a0c8dfd | 742 | return strbuf_getdelim(sb, fp, '\0'); |
8f309aeb JH |
743 | } |
744 | ||
5e8617f5 TR |
745 | int strbuf_getwholeline_fd(struct strbuf *sb, int fd, int term) |
746 | { | |
747 | strbuf_reset(sb); | |
748 | ||
749 | while (1) { | |
750 | char ch; | |
751 | ssize_t len = xread(fd, &ch, 1); | |
752 | if (len <= 0) | |
753 | return EOF; | |
754 | strbuf_addch(sb, ch); | |
755 | if (ch == term) | |
756 | break; | |
757 | } | |
758 | return 0; | |
759 | } | |
760 | ||
6c8afe49 | 761 | ssize_t strbuf_read_file(struct strbuf *sb, const char *path, size_t hint) |
a9390b9f | 762 | { |
6c8afe49 MH |
763 | int fd; |
764 | ssize_t len; | |
79f0ba15 | 765 | int saved_errno; |
a9390b9f KH |
766 | |
767 | fd = open(path, O_RDONLY); | |
768 | if (fd < 0) | |
769 | return -1; | |
387e7e19 | 770 | len = strbuf_read(sb, fd, hint); |
79f0ba15 | 771 | saved_errno = errno; |
a9390b9f | 772 | close(fd); |
79f0ba15 JK |
773 | if (len < 0) { |
774 | errno = saved_errno; | |
a9390b9f | 775 | return -1; |
79f0ba15 | 776 | } |
a9390b9f KH |
777 | |
778 | return len; | |
779 | } | |
895680f0 JH |
780 | |
781 | void strbuf_add_lines(struct strbuf *out, const char *prefix, | |
782 | const char *buf, size_t size) | |
783 | { | |
eff80a9f | 784 | add_lines(out, prefix, NULL, buf, size); |
895680f0 | 785 | } |
367d20ec | 786 | |
5963c036 MH |
787 | void strbuf_addstr_xml_quoted(struct strbuf *buf, const char *s) |
788 | { | |
789 | while (*s) { | |
790 | size_t len = strcspn(s, "\"<>&"); | |
791 | strbuf_add(buf, s, len); | |
792 | s += len; | |
793 | switch (*s) { | |
794 | case '"': | |
795 | strbuf_addstr(buf, """); | |
796 | break; | |
797 | case '<': | |
798 | strbuf_addstr(buf, "<"); | |
799 | break; | |
800 | case '>': | |
801 | strbuf_addstr(buf, ">"); | |
802 | break; | |
803 | case '&': | |
804 | strbuf_addstr(buf, "&"); | |
805 | break; | |
806 | case 0: | |
807 | return; | |
808 | } | |
809 | s++; | |
810 | } | |
811 | } | |
812 | ||
c2694952 | 813 | int is_rfc3986_reserved_or_unreserved(char ch) |
c505116b | 814 | { |
c2694952 MD |
815 | if (is_rfc3986_unreserved(ch)) |
816 | return 1; | |
c505116b JK |
817 | switch (ch) { |
818 | case '!': case '*': case '\'': case '(': case ')': case ';': | |
819 | case ':': case '@': case '&': case '=': case '+': case '$': | |
820 | case ',': case '/': case '?': case '#': case '[': case ']': | |
821 | return 1; | |
822 | } | |
823 | return 0; | |
824 | } | |
825 | ||
c2694952 | 826 | int is_rfc3986_unreserved(char ch) |
c505116b JK |
827 | { |
828 | return isalnum(ch) || | |
829 | ch == '-' || ch == '_' || ch == '.' || ch == '~'; | |
830 | } | |
831 | ||
ea03a8e1 | 832 | static void strbuf_add_urlencode(struct strbuf *sb, const char *s, size_t len, |
c2694952 | 833 | char_predicate allow_unencoded_fn) |
c505116b JK |
834 | { |
835 | strbuf_grow(sb, len); | |
836 | while (len--) { | |
837 | char ch = *s++; | |
c2694952 | 838 | if (allow_unencoded_fn(ch)) |
c505116b JK |
839 | strbuf_addch(sb, ch); |
840 | else | |
4c267f2a | 841 | strbuf_addf(sb, "%%%02x", (unsigned char)ch); |
c505116b JK |
842 | } |
843 | } | |
844 | ||
845 | void strbuf_addstr_urlencode(struct strbuf *sb, const char *s, | |
c2694952 | 846 | char_predicate allow_unencoded_fn) |
c505116b | 847 | { |
c2694952 | 848 | strbuf_add_urlencode(sb, s, strlen(s), allow_unencoded_fn); |
c505116b | 849 | } |
9a0a30aa | 850 | |
8f354a1f DR |
851 | static void strbuf_humanise(struct strbuf *buf, off_t bytes, |
852 | int humanise_rate) | |
079b546a AP |
853 | { |
854 | if (bytes > 1 << 30) { | |
8f354a1f DR |
855 | strbuf_addf(buf, |
856 | humanise_rate == 0 ? | |
857 | /* TRANSLATORS: IEC 80000-13:2008 gibibyte */ | |
858 | _("%u.%2.2u GiB") : | |
859 | /* TRANSLATORS: IEC 80000-13:2008 gibibyte/second */ | |
860 | _("%u.%2.2u GiB/s"), | |
7726d360 JK |
861 | (unsigned)(bytes >> 30), |
862 | (unsigned)(bytes & ((1 << 30) - 1)) / 10737419); | |
079b546a | 863 | } else if (bytes > 1 << 20) { |
7726d360 | 864 | unsigned x = bytes + 5243; /* for rounding */ |
8f354a1f DR |
865 | strbuf_addf(buf, |
866 | humanise_rate == 0 ? | |
867 | /* TRANSLATORS: IEC 80000-13:2008 mebibyte */ | |
868 | _("%u.%2.2u MiB") : | |
869 | /* TRANSLATORS: IEC 80000-13:2008 mebibyte/second */ | |
870 | _("%u.%2.2u MiB/s"), | |
079b546a AP |
871 | x >> 20, ((x & ((1 << 20) - 1)) * 100) >> 20); |
872 | } else if (bytes > 1 << 10) { | |
7726d360 | 873 | unsigned x = bytes + 5; /* for rounding */ |
8f354a1f DR |
874 | strbuf_addf(buf, |
875 | humanise_rate == 0 ? | |
876 | /* TRANSLATORS: IEC 80000-13:2008 kibibyte */ | |
877 | _("%u.%2.2u KiB") : | |
878 | /* TRANSLATORS: IEC 80000-13:2008 kibibyte/second */ | |
879 | _("%u.%2.2u KiB/s"), | |
079b546a AP |
880 | x >> 10, ((x & ((1 << 10) - 1)) * 100) >> 10); |
881 | } else { | |
8f354a1f DR |
882 | strbuf_addf(buf, |
883 | humanise_rate == 0 ? | |
884 | /* TRANSLATORS: IEC 80000-13:2008 byte */ | |
6f693252 | 885 | Q_("%u byte", "%u bytes", bytes) : |
8f354a1f | 886 | /* TRANSLATORS: IEC 80000-13:2008 byte/second */ |
6f693252 | 887 | Q_("%u byte/s", "%u bytes/s", bytes), |
8f354a1f | 888 | (unsigned)bytes); |
079b546a AP |
889 | } |
890 | } | |
891 | ||
8f354a1f DR |
892 | void strbuf_humanise_bytes(struct strbuf *buf, off_t bytes) |
893 | { | |
894 | strbuf_humanise(buf, bytes, 0); | |
895 | } | |
896 | ||
897 | void strbuf_humanise_rate(struct strbuf *buf, off_t bytes) | |
898 | { | |
899 | strbuf_humanise(buf, bytes, 1); | |
900 | } | |
901 | ||
679eebe2 RS |
902 | void strbuf_add_absolute_path(struct strbuf *sb, const char *path) |
903 | { | |
904 | if (!*path) | |
905 | die("The empty string is not a valid path"); | |
906 | if (!is_absolute_path(path)) { | |
907 | struct stat cwd_stat, pwd_stat; | |
908 | size_t orig_len = sb->len; | |
909 | char *cwd = xgetcwd(); | |
910 | char *pwd = getenv("PWD"); | |
911 | if (pwd && strcmp(pwd, cwd) && | |
912 | !stat(cwd, &cwd_stat) && | |
913 | (cwd_stat.st_dev || cwd_stat.st_ino) && | |
914 | !stat(pwd, &pwd_stat) && | |
915 | pwd_stat.st_dev == cwd_stat.st_dev && | |
916 | pwd_stat.st_ino == cwd_stat.st_ino) | |
917 | strbuf_addstr(sb, pwd); | |
918 | else | |
919 | strbuf_addstr(sb, cwd); | |
920 | if (sb->len > orig_len && !is_dir_sep(sb->buf[sb->len - 1])) | |
921 | strbuf_addch(sb, '/'); | |
922 | free(cwd); | |
923 | } | |
924 | strbuf_addstr(sb, path); | |
925 | } | |
926 | ||
33ad9ddd RS |
927 | void strbuf_add_real_path(struct strbuf *sb, const char *path) |
928 | { | |
929 | if (sb->len) { | |
930 | struct strbuf resolved = STRBUF_INIT; | |
931 | strbuf_realpath(&resolved, path, 1); | |
932 | strbuf_addbuf(sb, &resolved); | |
933 | strbuf_release(&resolved); | |
934 | } else | |
935 | strbuf_realpath(sb, path, 1); | |
936 | } | |
937 | ||
9a0a30aa NTND |
938 | int printf_ln(const char *fmt, ...) |
939 | { | |
940 | int ret; | |
941 | va_list ap; | |
942 | va_start(ap, fmt); | |
943 | ret = vprintf(fmt, ap); | |
944 | va_end(ap); | |
945 | if (ret < 0 || putchar('\n') == EOF) | |
946 | return -1; | |
947 | return ret + 1; | |
948 | } | |
949 | ||
950 | int fprintf_ln(FILE *fp, const char *fmt, ...) | |
951 | { | |
952 | int ret; | |
953 | va_list ap; | |
954 | va_start(ap, fmt); | |
955 | ret = vfprintf(fp, fmt, ap); | |
956 | va_end(ap); | |
957 | if (ret < 0 || putc('\n', fp) == EOF) | |
958 | return -1; | |
959 | return ret + 1; | |
960 | } | |
88d5a6f6 JK |
961 | |
962 | char *xstrdup_tolower(const char *string) | |
963 | { | |
964 | char *result; | |
965 | size_t len, i; | |
966 | ||
967 | len = strlen(string); | |
3733e694 | 968 | result = xmallocz(len); |
88d5a6f6 JK |
969 | for (i = 0; i < len; i++) |
970 | result[i] = tolower(string[i]); | |
88d5a6f6 JK |
971 | return result; |
972 | } | |
30a0ddb7 | 973 | |
13ecb463 LS |
974 | char *xstrdup_toupper(const char *string) |
975 | { | |
976 | char *result; | |
977 | size_t len, i; | |
978 | ||
979 | len = strlen(string); | |
980 | result = xmallocz(len); | |
981 | for (i = 0; i < len; i++) | |
982 | result[i] = toupper(string[i]); | |
88d5a6f6 JK |
983 | return result; |
984 | } | |
30a0ddb7 JK |
985 | |
986 | char *xstrvfmt(const char *fmt, va_list ap) | |
987 | { | |
988 | struct strbuf buf = STRBUF_INIT; | |
989 | strbuf_vaddf(&buf, fmt, ap); | |
990 | return strbuf_detach(&buf, NULL); | |
991 | } | |
992 | ||
993 | char *xstrfmt(const char *fmt, ...) | |
994 | { | |
995 | va_list ap; | |
996 | char *ret; | |
997 | ||
998 | va_start(ap, fmt); | |
999 | ret = xstrvfmt(fmt, ap); | |
1000 | va_end(ap); | |
1001 | ||
1002 | return ret; | |
1003 | } | |
aa1462cc | 1004 | |
c3fbf81a | 1005 | void strbuf_addftime(struct strbuf *sb, const char *fmt, const struct tm *tm, |
3b702239 | 1006 | int tz_offset, int suppress_tz_name) |
aa1462cc | 1007 | { |
c3fbf81a | 1008 | struct strbuf munged_fmt = STRBUF_INIT; |
e4f031e3 | 1009 | size_t hint = 128; |
aa1462cc JK |
1010 | size_t len; |
1011 | ||
e4f031e3 JK |
1012 | if (!*fmt) |
1013 | return; | |
1014 | ||
c3fbf81a RS |
1015 | /* |
1016 | * There is no portable way to pass timezone information to | |
9b591b94 JK |
1017 | * strftime, so we handle %z and %Z here. Likewise '%s', because |
1018 | * going back to an epoch time requires knowing the zone. | |
1019 | * | |
1020 | * Note that tz_offset is in the "[-+]HHMM" decimal form; this is what | |
1021 | * we want for %z, but the computation for %s has to convert to number | |
1022 | * of seconds. | |
c3fbf81a RS |
1023 | */ |
1024 | for (;;) { | |
1025 | const char *percent = strchrnul(fmt, '%'); | |
1026 | strbuf_add(&munged_fmt, fmt, percent - fmt); | |
1027 | if (!*percent) | |
1028 | break; | |
1029 | fmt = percent + 1; | |
1030 | switch (*fmt) { | |
1031 | case '%': | |
1032 | strbuf_addstr(&munged_fmt, "%%"); | |
1033 | fmt++; | |
1034 | break; | |
9b591b94 JK |
1035 | case 's': |
1036 | strbuf_addf(&munged_fmt, "%"PRItime, | |
1037 | (timestamp_t)tm_to_time_t(tm) - | |
1038 | 3600 * (tz_offset / 100) - | |
1039 | 60 * (tz_offset % 100)); | |
1040 | fmt++; | |
1041 | break; | |
c3fbf81a RS |
1042 | case 'z': |
1043 | strbuf_addf(&munged_fmt, "%+05d", tz_offset); | |
1044 | fmt++; | |
1045 | break; | |
1046 | case 'Z': | |
3b702239 | 1047 | if (suppress_tz_name) { |
c3fbf81a RS |
1048 | fmt++; |
1049 | break; | |
1050 | } | |
1051 | /* FALLTHROUGH */ | |
1052 | default: | |
1053 | strbuf_addch(&munged_fmt, '%'); | |
1054 | } | |
1055 | } | |
1056 | fmt = munged_fmt.buf; | |
1057 | ||
e4f031e3 | 1058 | strbuf_grow(sb, hint); |
aa1462cc JK |
1059 | len = strftime(sb->buf + sb->len, sb->alloc - sb->len, fmt, tm); |
1060 | ||
1061 | if (!len) { | |
1062 | /* | |
e4f031e3 JK |
1063 | * strftime reports "0" if it could not fit the result in the buffer. |
1064 | * Unfortunately, it also reports "0" if the requested time string | |
1065 | * takes 0 bytes. So our strategy is to munge the format so that the | |
1066 | * output contains at least one character, and then drop the extra | |
1067 | * character before returning. | |
aa1462cc | 1068 | */ |
c3fbf81a | 1069 | strbuf_addch(&munged_fmt, ' '); |
e4f031e3 JK |
1070 | while (!len) { |
1071 | hint *= 2; | |
1072 | strbuf_grow(sb, hint); | |
1073 | len = strftime(sb->buf + sb->len, sb->alloc - sb->len, | |
1074 | munged_fmt.buf, tm); | |
1075 | } | |
e4f031e3 | 1076 | len--; /* drop munged space */ |
aa1462cc | 1077 | } |
c3fbf81a | 1078 | strbuf_release(&munged_fmt); |
e4f031e3 | 1079 | strbuf_setlen(sb, sb->len + len); |
aa1462cc | 1080 | } |
af49c6d0 | 1081 | |
155b517d JT |
1082 | void strbuf_repo_add_unique_abbrev(struct strbuf *sb, struct repository *repo, |
1083 | const struct object_id *oid, int abbrev_len) | |
af49c6d0 JK |
1084 | { |
1085 | int r; | |
4b048c91 | 1086 | strbuf_grow(sb, GIT_MAX_HEXSZ + 1); |
155b517d | 1087 | r = repo_find_unique_abbrev_r(repo, sb->buf + sb->len, oid, abbrev_len); |
af49c6d0 JK |
1088 | strbuf_setlen(sb, sb->len + r); |
1089 | } | |
1ad7c0f6 | 1090 | |
155b517d JT |
1091 | void strbuf_add_unique_abbrev(struct strbuf *sb, const struct object_id *oid, |
1092 | int abbrev_len) | |
1093 | { | |
1094 | strbuf_repo_add_unique_abbrev(sb, the_repository, oid, abbrev_len); | |
1095 | } | |
1096 | ||
63af4a84 TK |
1097 | /* |
1098 | * Returns the length of a line, without trailing spaces. | |
1099 | * | |
1100 | * If the line ends with newline, it will be removed too. | |
1101 | */ | |
1102 | static size_t cleanup(char *line, size_t len) | |
1103 | { | |
1104 | while (len) { | |
1105 | unsigned char c = line[len - 1]; | |
1106 | if (!isspace(c)) | |
1107 | break; | |
1108 | len--; | |
1109 | } | |
1110 | ||
1111 | return len; | |
1112 | } | |
1113 | ||
1114 | /* | |
1115 | * Remove empty lines from the beginning and end | |
1116 | * and also trailing spaces from every line. | |
1117 | * | |
1118 | * Turn multiple consecutive empty lines between paragraphs | |
1119 | * into just one empty line. | |
1120 | * | |
1121 | * If the input has only empty lines and spaces, | |
1122 | * no output will be produced. | |
1123 | * | |
1124 | * If last line does not have a newline at the end, one is added. | |
1125 | * | |
1126 | * Enable skip_comments to skip every line starting with comment | |
1127 | * character. | |
1128 | */ | |
1129 | void strbuf_stripspace(struct strbuf *sb, int skip_comments) | |
1130 | { | |
26114c00 | 1131 | size_t empties = 0; |
63af4a84 TK |
1132 | size_t i, j, len, newlen; |
1133 | char *eol; | |
1134 | ||
1135 | /* We may have to add a newline. */ | |
1136 | strbuf_grow(sb, 1); | |
1137 | ||
1138 | for (i = j = 0; i < sb->len; i += len, j += newlen) { | |
1139 | eol = memchr(sb->buf + i, '\n', sb->len - i); | |
1140 | len = eol ? eol - (sb->buf + i) + 1 : sb->len - i; | |
1141 | ||
1142 | if (skip_comments && len && sb->buf[i] == comment_line_char) { | |
1143 | newlen = 0; | |
1144 | continue; | |
1145 | } | |
1146 | newlen = cleanup(sb->buf + i, len); | |
1147 | ||
1148 | /* Not just an empty line? */ | |
1149 | if (newlen) { | |
1150 | if (empties > 0 && j > 0) | |
1151 | sb->buf[j++] = '\n'; | |
1152 | empties = 0; | |
1153 | memmove(sb->buf + j, sb->buf + i, newlen); | |
1154 | sb->buf[newlen + j++] = '\n'; | |
1155 | } else { | |
1156 | empties++; | |
1157 | } | |
1158 | } | |
1159 | ||
1160 | strbuf_setlen(sb, j); | |
1161 | } | |
670c359d JK |
1162 | |
1163 | int strbuf_normalize_path(struct strbuf *src) | |
1164 | { | |
1165 | struct strbuf dst = STRBUF_INIT; | |
1166 | ||
1167 | strbuf_grow(&dst, src->len); | |
1168 | if (normalize_path_copy(dst.buf, src->buf) < 0) { | |
1169 | strbuf_release(&dst); | |
1170 | return -1; | |
1171 | } | |
1172 | ||
1173 | /* | |
1174 | * normalize_path does not tell us the new length, so we have to | |
1175 | * compute it by looking for the new NUL it placed | |
1176 | */ | |
1177 | strbuf_setlen(&dst, strlen(dst.buf)); | |
1178 | strbuf_swap(src, &dst); | |
1179 | strbuf_release(&dst); | |
1180 | return 0; | |
1181 | } | |
b38dd9e7 JS |
1182 | |
1183 | int strbuf_edit_interactively(struct strbuf *buffer, const char *path, | |
1184 | const char *const *env) | |
1185 | { | |
1186 | char *path2 = NULL; | |
1187 | int fd, res = 0; | |
1188 | ||
1189 | if (!is_absolute_path(path)) | |
1190 | path = path2 = xstrdup(git_path("%s", path)); | |
1191 | ||
1192 | fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0666); | |
1193 | if (fd < 0) | |
1194 | res = error_errno(_("could not open '%s' for writing"), path); | |
1195 | else if (write_in_full(fd, buffer->buf, buffer->len) < 0) { | |
1196 | res = error_errno(_("could not write to '%s'"), path); | |
1197 | close(fd); | |
1198 | } else if (close(fd) < 0) | |
1199 | res = error_errno(_("could not close '%s'"), path); | |
1200 | else { | |
1201 | strbuf_reset(buffer); | |
1202 | if (launch_editor(path, buffer, env) < 0) | |
1203 | res = error_errno(_("could not edit '%s'"), path); | |
1204 | unlink(path); | |
1205 | } | |
1206 | ||
1207 | free(path2); | |
1208 | return res; | |
1209 | } | |
9ea57964 DS |
1210 | |
1211 | void strbuf_strip_file_from_path(struct strbuf *sb) | |
1212 | { | |
1213 | char *path_sep = find_last_dir_sep(sb->buf); | |
1214 | strbuf_setlen(sb, path_sep ? path_sep - sb->buf + 1 : 0); | |
1215 | } |