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chromium / external / github.com / git / git / refs/tags/v2.4.4 / . / strbuf.c
blob: 88cafd4a70b8179a4e911c18704fb4ab0f2a21f5 [file] [log] [blame]
Christopher Li812666c2005-04-26 19:00:58[diff] [blame]1#include "cache.h"
Junio C Hamanoa2fab532009-03-21 21:35:51[diff] [blame]2#include "refs.h"
Jeff Kingd4241f52014-05-22 09:30:14[diff] [blame]3#include "utf8.h"
Junio C Hamanod1df5742005-04-26 01:26:45[diff] [blame]4
Christian Couder95662312013-12-01 07:49:16[diff] [blame]5int starts_with(const char *str, const char *prefix)
6{
7 for (; ; str++, prefix++)
8 if (!*prefix)
9 return 1;
10 else if (*str != *prefix)
11 return 0;
12}
13
Pierre Habouzitb315c5c2007-09-27 10:58:23[diff] [blame]14/*
15 * Used as the default ->buf value, so that people can always assume
16 * buf is non NULL and ->buf is NUL terminated even for a freshly
17 * initialized strbuf.
18 */
19char strbuf_slopbuf[1];
20
Pierre Habouzit917c9a72007-09-15 13:56:50[diff] [blame]21void strbuf_init(struct strbuf *sb, size_t hint)
22{
Pierre Habouzitb315c5c2007-09-27 10:58:23[diff] [blame]23 sb->alloc = sb->len = 0;
24 sb->buf = strbuf_slopbuf;
Thomas Rast8c74ef12011-08-29 21:16:12[diff] [blame]25 if (hint)
Pierre Habouzitf1696ee2007-09-10 10:35:04[diff] [blame]26 strbuf_grow(sb, hint);
Junio C Hamanod1df5742005-04-26 01:26:45[diff] [blame]27}
28
Pierre Habouzit917c9a72007-09-15 13:56:50[diff] [blame]29void strbuf_release(struct strbuf *sb)
30{
Pierre Habouzitb315c5c2007-09-27 10:58:23[diff] [blame]31 if (sb->alloc) {
32 free(sb->buf);
33 strbuf_init(sb, 0);
34 }
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]35}
36
Pierre Habouzitb315c5c2007-09-27 10:58:23[diff] [blame]37char *strbuf_detach(struct strbuf *sb, size_t *sz)
Pierre Habouzit917c9a72007-09-15 13:56:50[diff] [blame]38{
Jeff King08ad56f2012-10-18 10:00:12[diff] [blame]39 char *res;
40 strbuf_grow(sb, 0);
41 res = sb->buf;
Pierre Habouzitb315c5c2007-09-27 10:58:23[diff] [blame]42 if (sz)
43 *sz = sb->len;
Pierre Habouzitf1696ee2007-09-10 10:35:04[diff] [blame]44 strbuf_init(sb, 0);
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]45 return res;
Junio C Hamanod1df5742005-04-26 01:26:45[diff] [blame]46}
47
Pierre Habouzit917c9a72007-09-15 13:56:50[diff] [blame]48void strbuf_attach(struct strbuf *sb, void *buf, size_t len, size_t alloc)
49{
50 strbuf_release(sb);
51 sb->buf = buf;
52 sb->len = len;
53 sb->alloc = alloc;
54 strbuf_grow(sb, 0);
55 sb->buf[sb->len] = '\0';
56}
57
58void strbuf_grow(struct strbuf *sb, size_t extra)
59{
Thomas Rast8c74ef12011-08-29 21:16:12[diff] [blame]60 int new_buf = !sb->alloc;
Jonathan Nieder1368f652010-10-11 02:59:26[diff] [blame]61 if (unsigned_add_overflows(extra, 1) ||
62 unsigned_add_overflows(sb->len, extra + 1))
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]63 die("you want to use way too much memory");
Thomas Rast8c74ef12011-08-29 21:16:12[diff] [blame]64 if (new_buf)
Pierre Habouzitb315c5c2007-09-27 10:58:23[diff] [blame]65 sb->buf = NULL;
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]66 ALLOC_GROW(sb->buf, sb->len + extra + 1, sb->alloc);
Thomas Rast8c74ef12011-08-29 21:16:12[diff] [blame]67 if (new_buf)
68 sb->buf[0] = '\0';
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]69}
70
Lukas Sandströmeacd6dc2008-07-13 18:29:18[diff] [blame]71void strbuf_trim(struct strbuf *sb)
72{
Brian Gesiak3bb55e82014-04-30 08:58:06[diff] [blame]73 strbuf_rtrim(sb);
74 strbuf_ltrim(sb);
Lukas Sandströmeacd6dc2008-07-13 18:29:18[diff] [blame]75}
Pierre Habouzitf1696ee2007-09-10 10:35:04[diff] [blame]76void strbuf_rtrim(struct strbuf *sb)
77{
78 while (sb->len > 0 && isspace((unsigned char)sb->buf[sb->len - 1]))
79 sb->len--;
80 sb->buf[sb->len] = '\0';
81}
82
Lukas Sandströmeacd6dc2008-07-13 18:29:18[diff] [blame]83void strbuf_ltrim(struct strbuf *sb)
84{
85 char *b = sb->buf;
86 while (sb->len > 0 && isspace(*b)) {
87 b++;
88 sb->len--;
89 }
90 memmove(sb->buf, b, sb->len);
91 sb->buf[sb->len] = '\0';
92}
93
Jeff Kingd4241f52014-05-22 09:30:14[diff] [blame]94int strbuf_reencode(struct strbuf *sb, const char *from, const char *to)
95{
96 char *out;
97 int len;
98
99 if (same_encoding(from, to))
100 return 0;
101
102 out = reencode_string_len(sb->buf, sb->len, to, from, &len);
103 if (!out)
104 return -1;
105
106 strbuf_attach(sb, out, len, len);
107 return 0;
108}
109
Jeff Kingffb20ce2014-05-23 20:03:47[diff] [blame]110void strbuf_tolower(struct strbuf *sb)
111{
112 char *p = sb->buf, *end = sb->buf + sb->len;
113 for (; p < end; p++)
114 *p = tolower(*p);
115}
116
Michael Haggerty17b73dc2012-11-04 06:46:53[diff] [blame]117struct strbuf **strbuf_split_buf(const char *str, size_t slen,
118 int terminator, int max)
Lukas Sandströmeacd6dc2008-07-13 18:29:18[diff] [blame]119{
Michael Haggertyb8c2c1f2012-11-04 06:46:51[diff] [blame]120 struct strbuf **ret = NULL;
121 size_t nr = 0, alloc = 0;
Lukas Sandströmeacd6dc2008-07-13 18:29:18[diff] [blame]122 struct strbuf *t;
123
Michael Haggerty1173bb32012-11-04 06:46:52[diff] [blame]124 while (slen) {
125 int len = slen;
126 if (max <= 0 || nr + 1 < max) {
Michael Haggerty17b73dc2012-11-04 06:46:53[diff] [blame]127 const char *end = memchr(str, terminator, slen);
Michael Haggerty1173bb32012-11-04 06:46:52[diff] [blame]128 if (end)
129 len = end - str + 1;
130 }
Lukas Sandströmeacd6dc2008-07-13 18:29:18[diff] [blame]131 t = xmalloc(sizeof(struct strbuf));
132 strbuf_init(t, len);
Michael Haggerty1173bb32012-11-04 06:46:52[diff] [blame]133 strbuf_add(t, str, len);
Michael Haggertyb8c2c1f2012-11-04 06:46:51[diff] [blame]134 ALLOC_GROW(ret, nr + 2, alloc);
135 ret[nr++] = t;
Michael Haggerty1173bb32012-11-04 06:46:52[diff] [blame]136 str += len;
137 slen -= len;
Lukas Sandströmeacd6dc2008-07-13 18:29:18[diff] [blame]138 }
Michael Haggertyb8c2c1f2012-11-04 06:46:51[diff] [blame]139 ALLOC_GROW(ret, nr + 1, alloc); /* In case string was empty */
140 ret[nr] = NULL;
Lukas Sandströmeacd6dc2008-07-13 18:29:18[diff] [blame]141 return ret;
142}
143
144void strbuf_list_free(struct strbuf **sbs)
145{
146 struct strbuf **s = sbs;
147
148 while (*s) {
149 strbuf_release(*s);
150 free(*s++);
151 }
152 free(sbs);
153}
154
Lukas Sandström9b200fd2008-07-13 18:28:24[diff] [blame]155int strbuf_cmp(const struct strbuf *a, const struct strbuf *b)
Pierre Habouzit45f66f62007-09-24 09:25:03[diff] [blame]156{
Alex Riesen8f024652009-03-19 22:27:32[diff] [blame]157 int len = a->len < b->len ? a->len: b->len;
158 int cmp = memcmp(a->buf, b->buf, len);
159 if (cmp)
160 return cmp;
161 return a->len < b->len ? -1: a->len != b->len;
Pierre Habouzit45f66f62007-09-24 09:25:03[diff] [blame]162}
163
Pierre Habouzit917c9a72007-09-15 13:56:50[diff] [blame]164void strbuf_splice(struct strbuf *sb, size_t pos, size_t len,
165 const void *data, size_t dlen)
166{
Jonathan Nieder1368f652010-10-11 02:59:26[diff] [blame]167 if (unsigned_add_overflows(pos, len))
Pierre Habouzit917c9a72007-09-15 13:56:50[diff] [blame]168 die("you want to use way too much memory");
169 if (pos > sb->len)
170 die("`pos' is too far after the end of the buffer");
171 if (pos + len > sb->len)
172 die("`pos + len' is too far after the end of the buffer");
173
174 if (dlen >= len)
175 strbuf_grow(sb, dlen - len);
176 memmove(sb->buf + pos + dlen,
177 sb->buf + pos + len,
178 sb->len - pos - len);
179 memcpy(sb->buf + pos, data, dlen);
180 strbuf_setlen(sb, sb->len + dlen - len);
181}
182
Pierre Habouzitc76689d2007-09-19 22:42:12[diff] [blame]183void strbuf_insert(struct strbuf *sb, size_t pos, const void *data, size_t len)
184{
185 strbuf_splice(sb, pos, 0, data, len);
186}
187
188void strbuf_remove(struct strbuf *sb, size_t pos, size_t len)
189{
190 strbuf_splice(sb, pos, len, NULL, 0);
191}
192
Pierre Habouzit917c9a72007-09-15 13:56:50[diff] [blame]193void strbuf_add(struct strbuf *sb, const void *data, size_t len)
194{
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]195 strbuf_grow(sb, len);
196 memcpy(sb->buf + sb->len, data, len);
197 strbuf_setlen(sb, sb->len + len);
198}
199
René Scharfe91db2672007-11-10 11:16:05[diff] [blame]200void strbuf_adddup(struct strbuf *sb, size_t pos, size_t len)
201{
202 strbuf_grow(sb, len);
203 memcpy(sb->buf + sb->len, sb->buf + pos, len);
204 strbuf_setlen(sb, sb->len + len);
205}
206
René Scharfed07235a2014-09-07 07:03:32[diff] [blame]207void strbuf_addchars(struct strbuf *sb, int c, size_t n)
208{
209 strbuf_grow(sb, n);
210 memset(sb->buf + sb->len, c, n);
211 strbuf_setlen(sb, sb->len + n);
212}
213
Pierre Habouzit917c9a72007-09-15 13:56:50[diff] [blame]214void strbuf_addf(struct strbuf *sb, const char *fmt, ...)
215{
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]216 va_list ap;
Jeff Kingebeb6092011-02-26 05:08:53[diff] [blame]217 va_start(ap, fmt);
218 strbuf_vaddf(sb, fmt, ap);
219 va_end(ap);
220}
221
Junio C Hamanoeff80a92013-01-16 19:18:48[diff] [blame]222static void add_lines(struct strbuf *out,
223 const char *prefix1,
224 const char *prefix2,
225 const char *buf, size_t size)
226{
227 while (size) {
228 const char *prefix;
229 const char *next = memchr(buf, '\n', size);
230 next = next ? (next + 1) : (buf + size);
231
Junio C Hamanod55aeb72014-10-27 21:13:15[diff] [blame]232 prefix = ((prefix2 && (buf[0] == '\n' || buf[0] == '\t'))
233 ? prefix2 : prefix1);
Junio C Hamanoeff80a92013-01-16 19:18:48[diff] [blame]234 strbuf_addstr(out, prefix);
235 strbuf_add(out, buf, next - buf);
236 size -= next - buf;
237 buf = next;
238 }
239 strbuf_complete_line(out);
240}
241
242void strbuf_add_commented_lines(struct strbuf *out, const char *buf, size_t size)
243{
244 static char prefix1[3];
245 static char prefix2[2];
246
247 if (prefix1[0] != comment_line_char) {
248 sprintf(prefix1, "%c ", comment_line_char);
249 sprintf(prefix2, "%c", comment_line_char);
250 }
251 add_lines(out, prefix1, prefix2, buf, size);
252}
253
254void strbuf_commented_addf(struct strbuf *sb, const char *fmt, ...)
255{
256 va_list params;
257 struct strbuf buf = STRBUF_INIT;
258 int incomplete_line = sb->len && sb->buf[sb->len - 1] != '\n';
259
260 va_start(params, fmt);
261 strbuf_vaddf(&buf, fmt, params);
262 va_end(params);
263
264 strbuf_add_commented_lines(sb, buf.buf, buf.len);
265 if (incomplete_line)
266 sb->buf[--sb->len] = '\0';
267
268 strbuf_release(&buf);
269}
270
Jeff Kingebeb6092011-02-26 05:08:53[diff] [blame]271void strbuf_vaddf(struct strbuf *sb, const char *fmt, va_list ap)
272{
273 int len;
274 va_list cp;
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]275
Shawn O. Pearcef141bd82007-11-13 08:22:44[diff] [blame]276 if (!strbuf_avail(sb))
277 strbuf_grow(sb, 64);
Jeff Kingebeb6092011-02-26 05:08:53[diff] [blame]278 va_copy(cp, ap);
279 len = vsnprintf(sb->buf + sb->len, sb->alloc - sb->len, fmt, cp);
280 va_end(cp);
Shawn O. Pearcef141bd82007-11-13 08:22:44[diff] [blame]281 if (len < 0)
Jeff Kingebeb6092011-02-26 05:08:53[diff] [blame]282 die("BUG: your vsnprintf is broken (returned %d)", len);
Pierre Habouzitf1696ee2007-09-10 10:35:04[diff] [blame]283 if (len > strbuf_avail(sb)) {
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]284 strbuf_grow(sb, len);
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]285 len = vsnprintf(sb->buf + sb->len, sb->alloc - sb->len, fmt, ap);
Jeff Kingebeb6092011-02-26 05:08:53[diff] [blame]286 if (len > strbuf_avail(sb))
287 die("BUG: your vsnprintf is broken (insatiable)");
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]288 }
289 strbuf_setlen(sb, sb->len + len);
Junio C Hamanod1df5742005-04-26 01:26:45[diff] [blame]290}
291
Marco Costalbac3a670d2008-02-09 14:40:19[diff] [blame]292void strbuf_expand(struct strbuf *sb, const char *format, expand_fn_t fn,
293 void *context)
René Scharfecde75e52007-11-09 00:49:42[diff] [blame]294{
295 for (;;) {
Marco Costalbac3a670d2008-02-09 14:40:19[diff] [blame]296 const char *percent;
297 size_t consumed;
René Scharfecde75e52007-11-09 00:49:42[diff] [blame]298
299 percent = strchrnul(format, '%');
300 strbuf_add(sb, format, percent - format);
301 if (!*percent)
302 break;
303 format = percent + 1;
304
Jeff King0a0416a2010-01-13 17:35:31[diff] [blame]305 if (*format == '%') {
306 strbuf_addch(sb, '%');
307 format++;
308 continue;
309 }
310
Marco Costalbac3a670d2008-02-09 14:40:19[diff] [blame]311 consumed = fn(sb, format, context);
312 if (consumed)
313 format += consumed;
314 else
René Scharfecde75e52007-11-09 00:49:42[diff] [blame]315 strbuf_addch(sb, '%');
316 }
317}
318
René Scharfe9b864e72008-11-22 23:09:30[diff] [blame]319size_t strbuf_expand_dict_cb(struct strbuf *sb, const char *placeholder,
320 void *context)
321{
322 struct strbuf_expand_dict_entry *e = context;
323 size_t len;
324
325 for (; e->placeholder && (len = strlen(e->placeholder)); e++) {
326 if (!strncmp(placeholder, e->placeholder, len)) {
327 if (e->value)
328 strbuf_addstr(sb, e->value);
329 return len;
330 }
331 }
332 return 0;
333}
334
Jeff King361df5d2010-01-13 17:36:42[diff] [blame]335void strbuf_addbuf_percentquote(struct strbuf *dst, const struct strbuf *src)
336{
337 int i, len = src->len;
338
339 for (i = 0; i < len; i++) {
340 if (src->buf[i] == '%')
341 strbuf_addch(dst, '%');
342 strbuf_addch(dst, src->buf[i]);
343 }
344}
345
Pierre Habouzit917c9a72007-09-15 13:56:50[diff] [blame]346size_t strbuf_fread(struct strbuf *sb, size_t size, FILE *f)
347{
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]348 size_t res;
René Scharfe2fc64702009-01-06 20:41:14[diff] [blame]349 size_t oldalloc = sb->alloc;
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]350
351 strbuf_grow(sb, size);
352 res = fread(sb->buf + sb->len, 1, size, f);
René Scharfe2fc64702009-01-06 20:41:14[diff] [blame]353 if (res > 0)
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]354 strbuf_setlen(sb, sb->len + res);
Roel Kluin6651c3f2009-06-22 16:42:33[diff] [blame]355 else if (oldalloc == 0)
René Scharfe2fc64702009-01-06 20:41:14[diff] [blame]356 strbuf_release(sb);
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]357 return res;
358}
359
Pierre Habouzitf1696ee2007-09-10 10:35:04[diff] [blame]360ssize_t strbuf_read(struct strbuf *sb, int fd, size_t hint)
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]361{
362 size_t oldlen = sb->len;
René Scharfe2fc64702009-01-06 20:41:14[diff] [blame]363 size_t oldalloc = sb->alloc;
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]364
Pierre Habouzitf1696ee2007-09-10 10:35:04[diff] [blame]365 strbuf_grow(sb, hint ? hint : 8192);
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]366 for (;;) {
367 ssize_t cnt;
368
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]369 cnt = xread(fd, sb->buf + sb->len, sb->alloc - sb->len - 1);
370 if (cnt < 0) {
René Scharfe2fc64702009-01-06 20:41:14[diff] [blame]371 if (oldalloc == 0)
372 strbuf_release(sb);
373 else
374 strbuf_setlen(sb, oldlen);
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]375 return -1;
376 }
377 if (!cnt)
378 break;
379 sb->len += cnt;
Pierre Habouzitf1696ee2007-09-10 10:35:04[diff] [blame]380 strbuf_grow(sb, 8192);
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]381 }
382
383 sb->buf[sb->len] = '\0';
384 return sb->len - oldlen;
Junio C Hamanod1df5742005-04-26 01:26:45[diff] [blame]385}
386
Linus Torvaldsb11b7e12008-12-17 17:36:40[diff] [blame]387#define STRBUF_MAXLINK (2*PATH_MAX)
388
389int strbuf_readlink(struct strbuf *sb, const char *path, size_t hint)
390{
René Scharfe2fc64702009-01-06 20:41:14[diff] [blame]391 size_t oldalloc = sb->alloc;
392
Linus Torvaldsb11b7e12008-12-17 17:36:40[diff] [blame]393 if (hint < 32)
394 hint = 32;
395
396 while (hint < STRBUF_MAXLINK) {
397 int len;
398
399 strbuf_grow(sb, hint);
400 len = readlink(path, sb->buf, hint);
401 if (len < 0) {
402 if (errno != ERANGE)
403 break;
404 } else if (len < hint) {
405 strbuf_setlen(sb, len);
406 return 0;
407 }
408
409 /* .. the buffer was too small - try again */
410 hint *= 2;
411 }
René Scharfe2fc64702009-01-06 20:41:14[diff] [blame]412 if (oldalloc == 0)
413 strbuf_release(sb);
Linus Torvaldsb11b7e12008-12-17 17:36:40[diff] [blame]414 return -1;
415}
416
René Scharfef22a76e2014-07-28 18:24:29[diff] [blame]417int strbuf_getcwd(struct strbuf *sb)
418{
419 size_t oldalloc = sb->alloc;
420 size_t guessed_len = 128;
421
422 for (;; guessed_len *= 2) {
423 strbuf_grow(sb, guessed_len);
424 if (getcwd(sb->buf, sb->alloc)) {
425 strbuf_setlen(sb, strlen(sb->buf));
426 return 0;
427 }
428 if (errno != ERANGE)
429 break;
430 }
431 if (oldalloc == 0)
432 strbuf_release(sb);
433 else
434 strbuf_reset(sb);
435 return -1;
436}
437
Brandon Caseyc7e4f0d2009-08-05 03:31:56[diff] [blame]438int strbuf_getwholeline(struct strbuf *sb, FILE *fp, int term)
Pierre Habouzit917c9a72007-09-15 13:56:50[diff] [blame]439{
Junio C Hamanod1df5742005-04-26 01:26:45[diff] [blame]440 int ch;
Pierre Habouzite6c019d2007-09-17 09:19:04[diff] [blame]441
Pierre Habouzite6c019d2007-09-17 09:19:04[diff] [blame]442 if (feof(fp))
443 return EOF;
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]444
445 strbuf_reset(sb);
Junio C Hamanod1df5742005-04-26 01:26:45[diff] [blame]446 while ((ch = fgetc(fp)) != EOF) {
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]447 strbuf_grow(sb, 1);
448 sb->buf[sb->len++] = ch;
Brandon Caseyc7e4f0d2009-08-05 03:31:56[diff] [blame]449 if (ch == term)
450 break;
Junio C Hamanod1df5742005-04-26 01:26:45[diff] [blame]451 }
Pierre Habouzite6c019d2007-09-17 09:19:04[diff] [blame]452 if (ch == EOF && sb->len == 0)
453 return EOF;
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]454
Pierre Habouzitb449f4c2007-09-06 11:20:05[diff] [blame]455 sb->buf[sb->len] = '\0';
Pierre Habouzite6c019d2007-09-17 09:19:04[diff] [blame]456 return 0;
Junio C Hamanod1df5742005-04-26 01:26:45[diff] [blame]457}
Kristian Høgsberga9390b92007-09-18 00:06:46[diff] [blame]458
Brandon Caseyc7e4f0d2009-08-05 03:31:56[diff] [blame]459int strbuf_getline(struct strbuf *sb, FILE *fp, int term)
460{
461 if (strbuf_getwholeline(sb, fp, term))
462 return EOF;
463 if (sb->buf[sb->len-1] == term)
464 strbuf_setlen(sb, sb->len-1);
465 return 0;
466}
467
Thomas Rast5e8617f2012-02-22 19:34:22[diff] [blame]468int strbuf_getwholeline_fd(struct strbuf *sb, int fd, int term)
469{
470 strbuf_reset(sb);
471
472 while (1) {
473 char ch;
474 ssize_t len = xread(fd, &ch, 1);
475 if (len <= 0)
476 return EOF;
477 strbuf_addch(sb, ch);
478 if (ch == term)
479 break;
480 }
481 return 0;
482}
483
Pierre Habouzit387e7e12007-09-27 13:25:55[diff] [blame]484int strbuf_read_file(struct strbuf *sb, const char *path, size_t hint)
Kristian Høgsberga9390b92007-09-18 00:06:46[diff] [blame]485{
486 int fd, len;
487
488 fd = open(path, O_RDONLY);
489 if (fd < 0)
490 return -1;
Pierre Habouzit387e7e12007-09-27 13:25:55[diff] [blame]491 len = strbuf_read(sb, fd, hint);
Kristian Høgsberga9390b92007-09-18 00:06:46[diff] [blame]492 close(fd);
493 if (len < 0)
494 return -1;
495
496 return len;
497}
Junio C Hamano895680f2011-11-05 04:06:30[diff] [blame]498
499void strbuf_add_lines(struct strbuf *out, const char *prefix,
500 const char *buf, size_t size)
501{
Junio C Hamanoeff80a92013-01-16 19:18:48[diff] [blame]502 add_lines(out, prefix, NULL, buf, size);
Junio C Hamano895680f2011-11-05 04:06:30[diff] [blame]503}
Junio C Hamano367d20e2011-12-20 00:05:16[diff] [blame]504
Michael Haggerty5963c032012-11-25 11:08:34[diff] [blame]505void strbuf_addstr_xml_quoted(struct strbuf *buf, const char *s)
506{
507 while (*s) {
508 size_t len = strcspn(s, "\"<>&");
509 strbuf_add(buf, s, len);
510 s += len;
511 switch (*s) {
512 case '"':
513 strbuf_addstr(buf, "&quot;");
514 break;
515 case '<':
516 strbuf_addstr(buf, "&lt;");
517 break;
518 case '>':
519 strbuf_addstr(buf, "&gt;");
520 break;
521 case '&':
522 strbuf_addstr(buf, "&amp;");
523 break;
524 case 0:
525 return;
526 }
527 s++;
528 }
529}
530
Jeff Kingc5051162011-12-10 10:34:20[diff] [blame]531static int is_rfc3986_reserved(char ch)
532{
533 switch (ch) {
534 case '!': case '*': case '\'': case '(': case ')': case ';':
535 case ':': case '@': case '&': case '=': case '+': case '$':
536 case ',': case '/': case '?': case '#': case '[': case ']':
537 return 1;
538 }
539 return 0;
540}
541
542static int is_rfc3986_unreserved(char ch)
543{
544 return isalnum(ch) ||
545 ch == '-' || ch == '_' || ch == '.' || ch == '~';
546}
547
Junio C Hamanoea03a8e2012-09-16 05:43:15[diff] [blame]548static void strbuf_add_urlencode(struct strbuf *sb, const char *s, size_t len,
549 int reserved)
Jeff Kingc5051162011-12-10 10:34:20[diff] [blame]550{
551 strbuf_grow(sb, len);
552 while (len--) {
553 char ch = *s++;
554 if (is_rfc3986_unreserved(ch) ||
555 (!reserved && is_rfc3986_reserved(ch)))
556 strbuf_addch(sb, ch);
557 else
558 strbuf_addf(sb, "%%%02x", ch);
559 }
560}
561
562void strbuf_addstr_urlencode(struct strbuf *sb, const char *s,
563 int reserved)
564{
565 strbuf_add_urlencode(sb, s, strlen(s), reserved);
566}
Nguyễn Thái Ngọc Duy9a0a30a2012-04-23 12:30:22[diff] [blame]567
Antoine Pelisse079b5462013-04-10 19:03:23[diff] [blame]568void strbuf_humanise_bytes(struct strbuf *buf, off_t bytes)
569{
570 if (bytes > 1 << 30) {
571 strbuf_addf(buf, "%u.%2.2u GiB",
572 (int)(bytes >> 30),
573 (int)(bytes & ((1 << 30) - 1)) / 10737419);
574 } else if (bytes > 1 << 20) {
575 int x = bytes + 5243; /* for rounding */
576 strbuf_addf(buf, "%u.%2.2u MiB",
577 x >> 20, ((x & ((1 << 20) - 1)) * 100) >> 20);
578 } else if (bytes > 1 << 10) {
579 int x = bytes + 5; /* for rounding */
580 strbuf_addf(buf, "%u.%2.2u KiB",
581 x >> 10, ((x & ((1 << 10) - 1)) * 100) >> 10);
582 } else {
583 strbuf_addf(buf, "%u bytes", (int)bytes);
584 }
585}
586
René Scharfe679eebe2014-07-28 18:33:55[diff] [blame]587void strbuf_add_absolute_path(struct strbuf *sb, const char *path)
588{
589 if (!*path)
590 die("The empty string is not a valid path");
591 if (!is_absolute_path(path)) {
592 struct stat cwd_stat, pwd_stat;
593 size_t orig_len = sb->len;
594 char *cwd = xgetcwd();
595 char *pwd = getenv("PWD");
596 if (pwd && strcmp(pwd, cwd) &&
597 !stat(cwd, &cwd_stat) &&
598 (cwd_stat.st_dev || cwd_stat.st_ino) &&
599 !stat(pwd, &pwd_stat) &&
600 pwd_stat.st_dev == cwd_stat.st_dev &&
601 pwd_stat.st_ino == cwd_stat.st_ino)
602 strbuf_addstr(sb, pwd);
603 else
604 strbuf_addstr(sb, cwd);
605 if (sb->len > orig_len && !is_dir_sep(sb->buf[sb->len - 1]))
606 strbuf_addch(sb, '/');
607 free(cwd);
608 }
609 strbuf_addstr(sb, path);
610}
611
Nguyễn Thái Ngọc Duy9a0a30a2012-04-23 12:30:22[diff] [blame]612int printf_ln(const char *fmt, ...)
613{
614 int ret;
615 va_list ap;
616 va_start(ap, fmt);
617 ret = vprintf(fmt, ap);
618 va_end(ap);
619 if (ret < 0 || putchar('\n') == EOF)
620 return -1;
621 return ret + 1;
622}
623
624int fprintf_ln(FILE *fp, const char *fmt, ...)
625{
626 int ret;
627 va_list ap;
628 va_start(ap, fmt);
629 ret = vfprintf(fp, fmt, ap);
630 va_end(ap);
631 if (ret < 0 || putc('\n', fp) == EOF)
632 return -1;
633 return ret + 1;
634}
Jeff King88d5a6f2014-05-22 09:44:09[diff] [blame]635
636char *xstrdup_tolower(const char *string)
637{
638 char *result;
639 size_t len, i;
640
641 len = strlen(string);
642 result = xmalloc(len + 1);
643 for (i = 0; i < len; i++)
644 result[i] = tolower(string[i]);
645 result[i] = '\0';
646 return result;
647}
Jeff King30a0ddb2014-06-18 20:01:34[diff] [blame]648
649char *xstrvfmt(const char *fmt, va_list ap)
650{
651 struct strbuf buf = STRBUF_INIT;
652 strbuf_vaddf(&buf, fmt, ap);
653 return strbuf_detach(&buf, NULL);
654}
655
656char *xstrfmt(const char *fmt, ...)
657{
658 va_list ap;
659 char *ret;
660
661 va_start(ap, fmt);
662 ret = xstrvfmt(fmt, ap);
663 va_end(ap);
664
665 return ret;
666}