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chromium / external / github.com / git / git / refs/tags/v2.10.5 / . / quote.c
blob: 53b98a5b840d8fd4d73fab27348b657501923dca [file] [log] [blame]
Junio C Hamano6fb737b2005-07-08 06:58:32[diff] [blame]1#include "cache.h"
2#include "quote.h"
Jeff King37e81612011-09-13 21:58:08[diff] [blame]3#include "argv-array.h"
Junio C Hamano6fb737b2005-07-08 06:58:32[diff] [blame]4
Dmitry Potapov5b8e6f82008-06-27 20:46:42[diff] [blame]5int quote_path_fully = 1;
6
Christian Couder44cd91e2015-10-07 22:05:50[diff] [blame]7static inline int need_bs_quote(char c)
8{
9 return (c == '\'' || c == '!');
10}
11
Junio C Hamano6fb737b2005-07-08 06:58:32[diff] [blame]12/* Help to copy the thing properly quoted for the shell safety.
H. Peter Anvin77d604c2005-10-10 21:46:10[diff] [blame]13 * any single quote is replaced with '\'', any exclamation point
14 * is replaced with '\!', and the whole thing is enclosed in a
Christian Couderca9da0d2015-10-07 22:05:49[diff] [blame]15 * single quote pair.
Junio C Hamano6fb737b2005-07-08 06:58:32[diff] [blame]16 *
17 * E.g.
18 * original sq_quote result
19 * name ==> name ==> 'name'
20 * a b ==> a b ==> 'a b'
21 * a'b ==> a'\''b ==> 'a'\''b'
H. Peter Anvin77d604c2005-10-10 21:46:10[diff] [blame]22 * a!b ==> a'\!'b ==> 'a'\!'b'
Junio C Hamano6fb737b2005-07-08 06:58:32[diff] [blame]23 */
Pierre Habouzit7a33bcb2007-09-19 22:42:13[diff] [blame]24void sq_quote_buf(struct strbuf *dst, const char *src)
Junio C Hamano6fb737b2005-07-08 06:58:32[diff] [blame]25{
Pierre Habouzit7a33bcb2007-09-19 22:42:13[diff] [blame]26 char *to_free = NULL;
Junio C Hamano6fb737b2005-07-08 06:58:32[diff] [blame]27
Pierre Habouzit7a33bcb2007-09-19 22:42:13[diff] [blame]28 if (dst->buf == src)
Pierre Habouzitb315c5c2007-09-27 10:58:23[diff] [blame]29 to_free = strbuf_detach(dst, NULL);
Pierre Habouzit7a33bcb2007-09-19 22:42:13[diff] [blame]30
31 strbuf_addch(dst, '\'');
32 while (*src) {
Johannes Sixtc2015b32007-11-04 20:26:22[diff] [blame]33 size_t len = strcspn(src, "'!");
Pierre Habouzit7a33bcb2007-09-19 22:42:13[diff] [blame]34 strbuf_add(dst, src, len);
35 src += len;
36 while (need_bs_quote(*src)) {
37 strbuf_addstr(dst, "'\\");
38 strbuf_addch(dst, *src++);
39 strbuf_addch(dst, '\'');
Junio C Hamano6fb737b2005-07-08 06:58:32[diff] [blame]40 }
41 }
Pierre Habouzit7a33bcb2007-09-19 22:42:13[diff] [blame]42 strbuf_addch(dst, '\'');
43 free(to_free);
H. Peter Anvin77d604c2005-10-10 21:46:10[diff] [blame]44}
45
Jacob Kellere70986d2016-02-29 22:58:34[diff] [blame]46void sq_quotef(struct strbuf *dst, const char *fmt, ...)
47{
48 struct strbuf src = STRBUF_INIT;
49
50 va_list ap;
51 va_start(ap, fmt);
52 strbuf_vaddf(&src, fmt, ap);
53 va_end(ap);
54
55 sq_quote_buf(dst, src.buf);
56 strbuf_release(&src);
57}
58
Christian Couderb319ce42007-12-03 04:51:50[diff] [blame]59void sq_quote_argv(struct strbuf *dst, const char** argv, size_t maxlen)
Christian Couder7cf67202006-08-31 06:42:11[diff] [blame]60{
Christian Couder7cf67202006-08-31 06:42:11[diff] [blame]61 int i;
Christian Couder7cf67202006-08-31 06:42:11[diff] [blame]62
Christian Couder7cf67202006-08-31 06:42:11[diff] [blame]63 /* Copy into destination buffer. */
Christian Couderb319ce42007-12-03 04:51:50[diff] [blame]64 strbuf_grow(dst, 255);
65 for (i = 0; argv[i]; ++i) {
Pierre Habouzit7a33bcb2007-09-19 22:42:13[diff] [blame]66 strbuf_addch(dst, ' ');
67 sq_quote_buf(dst, argv[i]);
68 if (maxlen && dst->len > maxlen)
69 die("Too many or long arguments");
Christian Couder7cf67202006-08-31 06:42:11[diff] [blame]70 }
Christian Couder86257aa2006-09-11 04:59:22[diff] [blame]71}
72
Junio C Hamano758e9152010-01-12 06:31:06[diff] [blame]73static char *sq_dequote_step(char *arg, char **next)
Linus Torvalds35eb2d32005-10-23 21:30:45[diff] [blame]74{
75 char *dst = arg;
76 char *src = arg;
77 char c;
78
79 if (*src != '\'')
80 return NULL;
81 for (;;) {
82 c = *++src;
83 if (!c)
84 return NULL;
85 if (c != '\'') {
86 *dst++ = c;
87 continue;
88 }
89 /* We stepped out of sq */
90 switch (*++src) {
91 case '\0':
92 *dst = 0;
Christian Couderebbc0882009-03-29 09:44:44[diff] [blame]93 if (next)
94 *next = NULL;
Linus Torvalds35eb2d32005-10-23 21:30:45[diff] [blame]95 return arg;
96 case '\\':
97 c = *++src;
98 if (need_bs_quote(c) && *++src == '\'') {
99 *dst++ = c;
100 continue;
101 }
102 /* Fallthrough */
103 default:
Christian Couderebbc0882009-03-29 09:44:44[diff] [blame]104 if (!next || !isspace(*src))
105 return NULL;
106 do {
107 c = *++src;
108 } while (isspace(c));
109 *dst = 0;
110 *next = src;
111 return arg;
Linus Torvalds35eb2d32005-10-23 21:30:45[diff] [blame]112 }
113 }
114}
115
Christian Couderebbc0882009-03-29 09:44:44[diff] [blame]116char *sq_dequote(char *arg)
117{
118 return sq_dequote_step(arg, NULL);
119}
120
Jeff King37e81612011-09-13 21:58:08[diff] [blame]121static int sq_dequote_to_argv_internal(char *arg,
122 const char ***argv, int *nr, int *alloc,
123 struct argv_array *array)
Christian Coudereaa759b2009-03-29 09:44:52[diff] [blame]124{
125 char *next = arg;
126
127 if (!*arg)
128 return 0;
129 do {
130 char *dequoted = sq_dequote_step(next, &next);
131 if (!dequoted)
132 return -1;
Jeff King37e81612011-09-13 21:58:08[diff] [blame]133 if (argv) {
134 ALLOC_GROW(*argv, *nr + 1, *alloc);
135 (*argv)[(*nr)++] = dequoted;
136 }
137 if (array)
138 argv_array_push(array, dequoted);
Christian Coudereaa759b2009-03-29 09:44:52[diff] [blame]139 } while (next);
140
141 return 0;
142}
143
Jeff King37e81612011-09-13 21:58:08[diff] [blame]144int sq_dequote_to_argv(char *arg, const char ***argv, int *nr, int *alloc)
145{
146 return sq_dequote_to_argv_internal(arg, argv, nr, alloc, NULL);
147}
148
149int sq_dequote_to_argv_array(char *arg, struct argv_array *array)
150{
151 return sq_dequote_to_argv_internal(arg, NULL, NULL, NULL, array);
152}
153
Pierre Habouzit663af342007-09-19 22:42:15[diff] [blame]154/* 1 means: quote as octal
155 * 0 means: quote as octal if (quote_path_fully)
156 * -1 means: never quote
157 * c: quote as "\\c"
158 */
159#define X8(x) x, x, x, x, x, x, x, x
160#define X16(x) X8(x), X8(x)
161static signed char const sq_lookup[256] = {
162 /* 0 1 2 3 4 5 6 7 */
163 /* 0x00 */ 1, 1, 1, 1, 1, 1, 1, 'a',
164 /* 0x08 */ 'b', 't', 'n', 'v', 'f', 'r', 1, 1,
165 /* 0x10 */ X16(1),
166 /* 0x20 */ -1, -1, '"', -1, -1, -1, -1, -1,
167 /* 0x28 */ X16(-1), X16(-1), X16(-1),
168 /* 0x58 */ -1, -1, -1, -1,'\\', -1, -1, -1,
169 /* 0x60 */ X16(-1), X8(-1),
170 /* 0x78 */ -1, -1, -1, -1, -1, -1, -1, 1,
171 /* 0x80 */ /* set to 0 */
172};
173
Junio C Hamanof3fa1832007-11-08 23:35:32[diff] [blame]174static inline int sq_must_quote(char c)
175{
Pierre Habouzit663af342007-09-19 22:42:15[diff] [blame]176 return sq_lookup[(unsigned char)c] + quote_path_fully > 0;
177}
178
179/* returns the longest prefix not needing a quote up to maxlen if positive.
180 This stops at the first \0 because it's marked as a character needing an
181 escape */
182static size_t next_quote_pos(const char *s, ssize_t maxlen)
183{
184 size_t len;
185 if (maxlen < 0) {
186 for (len = 0; !sq_must_quote(s[len]); len++);
187 } else {
188 for (len = 0; len < maxlen && !sq_must_quote(s[len]); len++);
189 }
190 return len;
191}
192
Junio C Hamano4f6fbcd2005-10-15 04:54:47[diff] [blame]193/*
194 * C-style name quoting.
195 *
Pierre Habouzit663af342007-09-19 22:42:15[diff] [blame]196 * (1) if sb and fp are both NULL, inspect the input name and counts the
197 * number of bytes that are needed to hold c_style quoted version of name,
198 * counting the double quotes around it but not terminating NUL, and
199 * returns it.
200 * However, if name does not need c_style quoting, it returns 0.
Junio C Hamano4f6fbcd2005-10-15 04:54:47[diff] [blame]201 *
Pierre Habouzit663af342007-09-19 22:42:15[diff] [blame]202 * (2) if sb or fp are not NULL, it emits the c_style quoted version
203 * of name, enclosed with double quotes if asked and needed only.
204 * Return value is the same as in (1).
Junio C Hamano4f6fbcd2005-10-15 04:54:47[diff] [blame]205 */
Pierre Habouzit663af342007-09-19 22:42:15[diff] [blame]206static size_t quote_c_style_counted(const char *name, ssize_t maxlen,
207 struct strbuf *sb, FILE *fp, int no_dq)
Junio C Hamano4f6fbcd2005-10-15 04:54:47[diff] [blame]208{
209#undef EMIT
Pierre Habouzit663af342007-09-19 22:42:15[diff] [blame]210#define EMIT(c) \
211 do { \
212 if (sb) strbuf_addch(sb, (c)); \
213 if (fp) fputc((c), fp); \
214 count++; \
215 } while (0)
216#define EMITBUF(s, l) \
217 do { \
218 if (sb) strbuf_add(sb, (s), (l)); \
219 if (fp) fwrite((s), (l), 1, fp); \
220 count += (l); \
221 } while (0)
Junio C Hamano4f6fbcd2005-10-15 04:54:47[diff] [blame]222
Pierre Habouzit663af342007-09-19 22:42:15[diff] [blame]223 size_t len, count = 0;
224 const char *p = name;
Junio C Hamano4f6fbcd2005-10-15 04:54:47[diff] [blame]225
Pierre Habouzit663af342007-09-19 22:42:15[diff] [blame]226 for (;;) {
227 int ch;
Junio C Hamano4f6fbcd2005-10-15 04:54:47[diff] [blame]228
Pierre Habouzit663af342007-09-19 22:42:15[diff] [blame]229 len = next_quote_pos(p, maxlen);
Jeff King84249812010-02-01 13:39:03[diff] [blame]230 if (len == maxlen || (maxlen < 0 && !p[len]))
Pavel Roskin50e7b062005-12-21 20:35:48[diff] [blame]231 break;
Junio C Hamano4f6fbcd2005-10-15 04:54:47[diff] [blame]232
Pierre Habouzit663af342007-09-19 22:42:15[diff] [blame]233 if (!no_dq && p == name)
234 EMIT('"');
235
236 EMITBUF(p, len);
237 EMIT('\\');
238 p += len;
239 ch = (unsigned char)*p++;
Jeff King84249812010-02-01 13:39:03[diff] [blame]240 if (maxlen >= 0)
241 maxlen -= len + 1;
Pierre Habouzit663af342007-09-19 22:42:15[diff] [blame]242 if (sq_lookup[ch] >= ' ') {
243 EMIT(sq_lookup[ch]);
244 } else {
245 EMIT(((ch >> 6) & 03) + '0');
246 EMIT(((ch >> 3) & 07) + '0');
247 EMIT(((ch >> 0) & 07) + '0');
Junio C Hamano4f6fbcd2005-10-15 04:54:47[diff] [blame]248 }
Junio C Hamano4f6fbcd2005-10-15 04:54:47[diff] [blame]249 }
Pierre Habouzit663af342007-09-19 22:42:15[diff] [blame]250
251 EMITBUF(p, len);
252 if (p == name) /* no ending quote needed */
253 return 0;
254
Junio C Hamano4f6fbcd2005-10-15 04:54:47[diff] [blame]255 if (!no_dq)
256 EMIT('"');
Pierre Habouzit663af342007-09-19 22:42:15[diff] [blame]257 return count;
Junio C Hamano4f6fbcd2005-10-15 04:54:47[diff] [blame]258}
259
Pierre Habouzit663af342007-09-19 22:42:15[diff] [blame]260size_t quote_c_style(const char *name, struct strbuf *sb, FILE *fp, int nodq)
Junio C Hamano9ef2b3c2005-11-29 06:55:25[diff] [blame]261{
Pierre Habouzit663af342007-09-19 22:42:15[diff] [blame]262 return quote_c_style_counted(name, -1, sb, fp, nodq);
263}
264
Junio C Hamanod5625092007-12-27 01:13:36[diff] [blame]265void quote_two_c_style(struct strbuf *sb, const char *prefix, const char *path, int nodq)
266{
267 if (quote_c_style(prefix, NULL, NULL, 0) ||
268 quote_c_style(path, NULL, NULL, 0)) {
269 if (!nodq)
270 strbuf_addch(sb, '"');
271 quote_c_style(prefix, sb, NULL, 1);
272 quote_c_style(path, sb, NULL, 1);
273 if (!nodq)
274 strbuf_addch(sb, '"');
275 } else {
276 strbuf_addstr(sb, prefix);
277 strbuf_addstr(sb, path);
278 }
279}
280
Pierre Habouzit663af342007-09-19 22:42:15[diff] [blame]281void write_name_quoted(const char *name, FILE *fp, int terminator)
282{
283 if (terminator) {
284 quote_c_style(name, NULL, fp, 0);
285 } else {
286 fputs(name, fp);
287 }
288 fputc(terminator, fp);
289}
290
Jiang Xine9a820c2013-06-25 15:53:46[diff] [blame]291void write_name_quoted_relative(const char *name, const char *prefix,
Clemens Buchacherb167cff2010-06-03 13:36:31[diff] [blame]292 FILE *fp, int terminator)
293{
294 struct strbuf sb = STRBUF_INIT;
295
Jiang Xinad66df22013-06-25 15:53:44[diff] [blame]296 name = relative_path(name, prefix, &sb);
Clemens Buchacherb167cff2010-06-03 13:36:31[diff] [blame]297 write_name_quoted(name, fp, terminator);
298
299 strbuf_release(&sb);
300}
301
Dmitry Potapova734d0b2008-03-07 02:30:58[diff] [blame]302/* quote path as relative to the given prefix */
Jiang Xin39598f92013-06-25 15:53:45[diff] [blame]303char *quote_path_relative(const char *in, const char *prefix,
304 struct strbuf *out)
Dmitry Potapova734d0b2008-03-07 02:30:58[diff] [blame]305{
Clemens Buchacherb167cff2010-06-03 13:36:31[diff] [blame]306 struct strbuf sb = STRBUF_INIT;
Jiang Xinad66df22013-06-25 15:53:44[diff] [blame]307 const char *rel = relative_path(in, prefix, &sb);
Clemens Buchacherb167cff2010-06-03 13:36:31[diff] [blame]308 strbuf_reset(out);
309 quote_c_style_counted(rel, strlen(rel), out, NULL, 0);
310 strbuf_release(&sb);
Dmitry Potapova734d0b2008-03-07 02:30:58[diff] [blame]311
Dmitry Potapova734d0b2008-03-07 02:30:58[diff] [blame]312 return out->buf;
313}
314
Junio C Hamano4f6fbcd2005-10-15 04:54:47[diff] [blame]315/*
316 * C-style name unquoting.
317 *
Pierre Habouzit7fb10112007-09-19 22:42:14[diff] [blame]318 * Quoted should point at the opening double quote.
319 * + Returns 0 if it was able to unquote the string properly, and appends the
320 * result in the strbuf `sb'.
321 * + Returns -1 in case of error, and doesn't touch the strbuf. Though note
322 * that this function will allocate memory in the strbuf, so calling
323 * strbuf_release is mandatory whichever result unquote_c_style returns.
324 *
325 * Updates endp pointer to point at one past the ending double quote if given.
Junio C Hamano4f6fbcd2005-10-15 04:54:47[diff] [blame]326 */
Pierre Habouzit7fb10112007-09-19 22:42:14[diff] [blame]327int unquote_c_style(struct strbuf *sb, const char *quoted, const char **endp)
Junio C Hamano4f6fbcd2005-10-15 04:54:47[diff] [blame]328{
Pierre Habouzit7fb10112007-09-19 22:42:14[diff] [blame]329 size_t oldlen = sb->len, len;
330 int ch, ac;
Junio C Hamano4f6fbcd2005-10-15 04:54:47[diff] [blame]331
332 if (*quoted++ != '"')
Pierre Habouzit7fb10112007-09-19 22:42:14[diff] [blame]333 return -1;
Junio C Hamano4f6fbcd2005-10-15 04:54:47[diff] [blame]334
Pierre Habouzit7fb10112007-09-19 22:42:14[diff] [blame]335 for (;;) {
336 len = strcspn(quoted, "\"\\");
337 strbuf_add(sb, quoted, len);
338 quoted += len;
Junio C Hamano4f6fbcd2005-10-15 04:54:47[diff] [blame]339
Pierre Habouzit7fb10112007-09-19 22:42:14[diff] [blame]340 switch (*quoted++) {
341 case '"':
342 if (endp)
Pierre Habouzitc8744d62008-03-06 21:28:19[diff] [blame]343 *endp = quoted;
Pierre Habouzit7fb10112007-09-19 22:42:14[diff] [blame]344 return 0;
345 case '\\':
346 break;
347 default:
348 goto error;
349 }
Junio C Hamano4f6fbcd2005-10-15 04:54:47[diff] [blame]350
Pierre Habouzit7fb10112007-09-19 22:42:14[diff] [blame]351 switch ((ch = *quoted++)) {
352 case 'a': ch = '\a'; break;
353 case 'b': ch = '\b'; break;
354 case 'f': ch = '\f'; break;
355 case 'n': ch = '\n'; break;
356 case 'r': ch = '\r'; break;
357 case 't': ch = '\t'; break;
358 case 'v': ch = '\v'; break;
359
360 case '\\': case '"':
361 break; /* verbatim */
362
363 /* octal values with first digit over 4 overflow */
364 case '0': case '1': case '2': case '3':
Junio C Hamano4f6fbcd2005-10-15 04:54:47[diff] [blame]365 ac = ((ch - '0') << 6);
Pierre Habouzit7fb10112007-09-19 22:42:14[diff] [blame]366 if ((ch = *quoted++) < '0' || '7' < ch)
367 goto error;
Junio C Hamano4f6fbcd2005-10-15 04:54:47[diff] [blame]368 ac |= ((ch - '0') << 3);
Pierre Habouzit7fb10112007-09-19 22:42:14[diff] [blame]369 if ((ch = *quoted++) < '0' || '7' < ch)
370 goto error;
Junio C Hamano4f6fbcd2005-10-15 04:54:47[diff] [blame]371 ac |= (ch - '0');
372 ch = ac;
373 break;
374 default:
Pierre Habouzit7fb10112007-09-19 22:42:14[diff] [blame]375 goto error;
Junio C Hamano4f6fbcd2005-10-15 04:54:47[diff] [blame]376 }
Pierre Habouzit7fb10112007-09-19 22:42:14[diff] [blame]377 strbuf_addch(sb, ch);
Junio C Hamano4f6fbcd2005-10-15 04:54:47[diff] [blame]378 }
379
Pierre Habouzit7fb10112007-09-19 22:42:14[diff] [blame]380 error:
381 strbuf_setlen(sb, oldlen);
382 return -1;
Junio C Hamano4f6fbcd2005-10-15 04:54:47[diff] [blame]383}
384
Junio C Hamano9f613dd2006-09-15 20:30:02[diff] [blame]385/* quoting as a string literal for other languages */
386
Nguyễn Thái Ngọc Duy10d01672013-07-30 08:31:25[diff] [blame]387void perl_quote_buf(struct strbuf *sb, const char *src)
Junio C Hamano9f613dd2006-09-15 20:30:02[diff] [blame]388{
389 const char sq = '\'';
390 const char bq = '\\';
391 char c;
392
Nguyễn Thái Ngọc Duy10d01672013-07-30 08:31:25[diff] [blame]393 strbuf_addch(sb, sq);
Junio C Hamano9f613dd2006-09-15 20:30:02[diff] [blame]394 while ((c = *src++)) {
395 if (c == sq || c == bq)
Nguyễn Thái Ngọc Duy10d01672013-07-30 08:31:25[diff] [blame]396 strbuf_addch(sb, bq);
397 strbuf_addch(sb, c);
Junio C Hamano9f613dd2006-09-15 20:30:02[diff] [blame]398 }
Nguyễn Thái Ngọc Duy10d01672013-07-30 08:31:25[diff] [blame]399 strbuf_addch(sb, sq);
Junio C Hamano9f613dd2006-09-15 20:30:02[diff] [blame]400}
401
Nguyễn Thái Ngọc Duy10d01672013-07-30 08:31:25[diff] [blame]402void python_quote_buf(struct strbuf *sb, const char *src)
Junio C Hamano9f613dd2006-09-15 20:30:02[diff] [blame]403{
404 const char sq = '\'';
405 const char bq = '\\';
406 const char nl = '\n';
407 char c;
408
Nguyễn Thái Ngọc Duy10d01672013-07-30 08:31:25[diff] [blame]409 strbuf_addch(sb, sq);
Junio C Hamano9f613dd2006-09-15 20:30:02[diff] [blame]410 while ((c = *src++)) {
411 if (c == nl) {
Nguyễn Thái Ngọc Duy10d01672013-07-30 08:31:25[diff] [blame]412 strbuf_addch(sb, bq);
413 strbuf_addch(sb, 'n');
Junio C Hamano9f613dd2006-09-15 20:30:02[diff] [blame]414 continue;
415 }
416 if (c == sq || c == bq)
Nguyễn Thái Ngọc Duy10d01672013-07-30 08:31:25[diff] [blame]417 strbuf_addch(sb, bq);
418 strbuf_addch(sb, c);
Junio C Hamano9f613dd2006-09-15 20:30:02[diff] [blame]419 }
Nguyễn Thái Ngọc Duy10d01672013-07-30 08:31:25[diff] [blame]420 strbuf_addch(sb, sq);
Junio C Hamano9f613dd2006-09-15 20:30:02[diff] [blame]421}
Shawn O. Pearce5558e552007-01-28 07:39:13[diff] [blame]422
Nguyễn Thái Ngọc Duy10d01672013-07-30 08:31:25[diff] [blame]423void tcl_quote_buf(struct strbuf *sb, const char *src)
Shawn O. Pearce5558e552007-01-28 07:39:13[diff] [blame]424{
425 char c;
426
Nguyễn Thái Ngọc Duy10d01672013-07-30 08:31:25[diff] [blame]427 strbuf_addch(sb, '"');
Shawn O. Pearce5558e552007-01-28 07:39:13[diff] [blame]428 while ((c = *src++)) {
429 switch (c) {
430 case '[': case ']':
431 case '{': case '}':
432 case '$': case '\\': case '"':
Nguyễn Thái Ngọc Duy10d01672013-07-30 08:31:25[diff] [blame]433 strbuf_addch(sb, '\\');
Shawn O. Pearce5558e552007-01-28 07:39:13[diff] [blame]434 default:
Nguyễn Thái Ngọc Duy10d01672013-07-30 08:31:25[diff] [blame]435 strbuf_addch(sb, c);
Shawn O. Pearce5558e552007-01-28 07:39:13[diff] [blame]436 break;
437 case '\f':
Nguyễn Thái Ngọc Duy10d01672013-07-30 08:31:25[diff] [blame]438 strbuf_addstr(sb, "\\f");
Shawn O. Pearce5558e552007-01-28 07:39:13[diff] [blame]439 break;
440 case '\r':
Nguyễn Thái Ngọc Duy10d01672013-07-30 08:31:25[diff] [blame]441 strbuf_addstr(sb, "\\r");
Shawn O. Pearce5558e552007-01-28 07:39:13[diff] [blame]442 break;
443 case '\n':
Nguyễn Thái Ngọc Duy10d01672013-07-30 08:31:25[diff] [blame]444 strbuf_addstr(sb, "\\n");
Shawn O. Pearce5558e552007-01-28 07:39:13[diff] [blame]445 break;
446 case '\t':
Nguyễn Thái Ngọc Duy10d01672013-07-30 08:31:25[diff] [blame]447 strbuf_addstr(sb, "\\t");
Shawn O. Pearce5558e552007-01-28 07:39:13[diff] [blame]448 break;
449 case '\v':
Nguyễn Thái Ngọc Duy10d01672013-07-30 08:31:25[diff] [blame]450 strbuf_addstr(sb, "\\v");
Shawn O. Pearce5558e552007-01-28 07:39:13[diff] [blame]451 break;
452 }
453 }
Nguyễn Thái Ngọc Duy10d01672013-07-30 08:31:25[diff] [blame]454 strbuf_addch(sb, '"');
Shawn O. Pearce5558e552007-01-28 07:39:13[diff] [blame]455}
Nguyễn Thái Ngọc Duy793dc672016-06-25 05:22:31[diff] [blame]456
457void basic_regex_quote_buf(struct strbuf *sb, const char *src)
458{
459 char c;
460
461 if (*src == '^') {
462 /* only beginning '^' is special and needs quoting */
463 strbuf_addch(sb, '\\');
464 strbuf_addch(sb, *src++);
465 }
466 if (*src == '*')
467 /* beginning '*' is not special, no quoting */
468 strbuf_addch(sb, *src++);
469
470 while ((c = *src++)) {
471 switch (c) {
472 case '[':
473 case '.':
474 case '\\':
475 case '*':
476 strbuf_addch(sb, '\\');
477 strbuf_addch(sb, c);
478 break;
479
480 case '$':
481 /* only the end '$' is special and needs quoting */
482 if (*src == '\0')
483 strbuf_addch(sb, '\\');
484 strbuf_addch(sb, c);
485 break;
486
487 default:
488 strbuf_addch(sb, c);
489 break;
490 }
491 }
492}