5 int quote_path_fully = 1;
7 static inline int need_bs_quote(char c)
9 return (c == '\'' || c == '!');
12 /* Help to copy the thing properly quoted for the shell safety.
13 * any single quote is replaced with '\'', any exclamation point
14 * is replaced with '\!', and the whole thing is enclosed in a
18 * original sq_quote result
19 * name ==> name ==> 'name'
20 * a b ==> a b ==> 'a b'
21 * a'b ==> a'\''b ==> 'a'\''b'
22 * a!b ==> a'\!'b ==> 'a'\!'b'
24 void sq_quote_buf(struct strbuf *dst, const char *src)
29 to_free = strbuf_detach(dst, NULL);
31 strbuf_addch(dst, '\'');
33 size_t len = strcspn(src, "'!");
34 strbuf_add(dst, src, len);
36 while (need_bs_quote(*src)) {
37 strbuf_addstr(dst, "'\\");
38 strbuf_addch(dst, *src++);
39 strbuf_addch(dst, '\'');
42 strbuf_addch(dst, '\'');
46 void sq_quote_buf_pretty(struct strbuf *dst, const char *src)
48 static const char ok_punct[] = "+,-./:=@_^";
51 /* Avoid losing a zero-length string by adding '' */
53 strbuf_addstr(dst, "''");
57 for (p = src; *p; p++) {
58 if (!isalnum(*p) && !strchr(ok_punct, *p)) {
59 sq_quote_buf(dst, src);
64 /* if we get here, we did not need quoting */
65 strbuf_addstr(dst, src);
68 void sq_quotef(struct strbuf *dst, const char *fmt, ...)
70 struct strbuf src = STRBUF_INIT;
74 strbuf_vaddf(&src, fmt, ap);
77 sq_quote_buf(dst, src.buf);
81 void sq_quote_argv(struct strbuf *dst, const char **argv)
85 /* Copy into destination buffer. */
86 strbuf_grow(dst, 255);
87 for (i = 0; argv[i]; ++i) {
88 strbuf_addch(dst, ' ');
89 sq_quote_buf(dst, argv[i]);
94 * Legacy function to append each argv value, quoted as necessasry,
95 * with whitespace before each value. This results in a leading
96 * space in the result.
98 void sq_quote_argv_pretty(struct strbuf *dst, const char **argv)
101 strbuf_addch(dst, ' ');
102 sq_append_quote_argv_pretty(dst, argv);
106 * Append each argv value, quoted as necessary, with whitespace between them.
108 void sq_append_quote_argv_pretty(struct strbuf *dst, const char **argv)
112 for (i = 0; argv[i]; i++) {
114 strbuf_addch(dst, ' ');
115 sq_quote_buf_pretty(dst, argv[i]);
119 static char *sq_dequote_step(char *arg, char **next)
135 /* We stepped out of sq */
144 * Allow backslashed characters outside of
145 * single-quotes only if they need escaping,
146 * and only if we resume the single-quoted part
149 if (need_bs_quote(src[1]) && src[2] == '\'') {
156 if (!next || !isspace(*src))
160 } while (isspace(c));
168 char *sq_dequote(char *arg)
170 return sq_dequote_step(arg, NULL);
173 static int sq_dequote_to_argv_internal(char *arg,
174 const char ***argv, int *nr, int *alloc,
175 struct strvec *array)
182 char *dequoted = sq_dequote_step(next, &next);
186 ALLOC_GROW(*argv, *nr + 1, *alloc);
187 (*argv)[(*nr)++] = dequoted;
190 strvec_push(array, dequoted);
196 int sq_dequote_to_argv(char *arg, const char ***argv, int *nr, int *alloc)
198 return sq_dequote_to_argv_internal(arg, argv, nr, alloc, NULL);
201 int sq_dequote_to_strvec(char *arg, struct strvec *array)
203 return sq_dequote_to_argv_internal(arg, NULL, NULL, NULL, array);
206 /* 1 means: quote as octal
207 * 0 means: quote as octal if (quote_path_fully)
208 * -1 means: never quote
211 #define X8(x) x, x, x, x, x, x, x, x
212 #define X16(x) X8(x), X8(x)
213 static signed char const cq_lookup[256] = {
214 /* 0 1 2 3 4 5 6 7 */
215 /* 0x00 */ 1, 1, 1, 1, 1, 1, 1, 'a',
216 /* 0x08 */ 'b', 't', 'n', 'v', 'f', 'r', 1, 1,
218 /* 0x20 */ -1, -1, '"', -1, -1, -1, -1, -1,
219 /* 0x28 */ X16(-1), X16(-1), X16(-1),
220 /* 0x58 */ -1, -1, -1, -1,'\\', -1, -1, -1,
221 /* 0x60 */ X16(-1), X8(-1),
222 /* 0x78 */ -1, -1, -1, -1, -1, -1, -1, 1,
223 /* 0x80 */ /* set to 0 */
226 static inline int cq_must_quote(char c)
228 return cq_lookup[(unsigned char)c] + quote_path_fully > 0;
231 /* returns the longest prefix not needing a quote up to maxlen if positive.
232 This stops at the first \0 because it's marked as a character needing an
234 static size_t next_quote_pos(const char *s, ssize_t maxlen)
238 for (len = 0; !cq_must_quote(s[len]); len++);
240 for (len = 0; len < maxlen && !cq_must_quote(s[len]); len++);
246 * C-style name quoting.
248 * (1) if sb and fp are both NULL, inspect the input name and counts the
249 * number of bytes that are needed to hold c_style quoted version of name,
250 * counting the double quotes around it but not terminating NUL, and
252 * However, if name does not need c_style quoting, it returns 0.
254 * (2) if sb or fp are not NULL, it emits the c_style quoted version
255 * of name, enclosed with double quotes if asked and needed only.
256 * Return value is the same as in (1).
258 static size_t quote_c_style_counted(const char *name, ssize_t maxlen,
259 struct strbuf *sb, FILE *fp, unsigned flags)
264 if (sb) strbuf_addch(sb, (c)); \
265 if (fp) fputc((c), fp); \
268 #define EMITBUF(s, l) \
270 if (sb) strbuf_add(sb, (s), (l)); \
271 if (fp) fwrite((s), (l), 1, fp); \
275 int no_dq = !!(flags & CQUOTE_NODQ);
276 size_t len, count = 0;
277 const char *p = name;
282 len = next_quote_pos(p, maxlen);
283 if (len == maxlen || (maxlen < 0 && !p[len]))
286 if (!no_dq && p == name)
292 ch = (unsigned char)*p++;
295 if (cq_lookup[ch] >= ' ') {
298 EMIT(((ch >> 6) & 03) + '0');
299 EMIT(((ch >> 3) & 07) + '0');
300 EMIT(((ch >> 0) & 07) + '0');
305 if (p == name) /* no ending quote needed */
313 size_t quote_c_style(const char *name, struct strbuf *sb, FILE *fp, unsigned flags)
315 return quote_c_style_counted(name, -1, sb, fp, flags);
318 void quote_two_c_style(struct strbuf *sb, const char *prefix, const char *path,
321 int nodq = !!(flags & CQUOTE_NODQ);
322 if (quote_c_style(prefix, NULL, NULL, 0) ||
323 quote_c_style(path, NULL, NULL, 0)) {
325 strbuf_addch(sb, '"');
326 quote_c_style(prefix, sb, NULL, CQUOTE_NODQ);
327 quote_c_style(path, sb, NULL, CQUOTE_NODQ);
329 strbuf_addch(sb, '"');
331 strbuf_addstr(sb, prefix);
332 strbuf_addstr(sb, path);
336 void write_name_quoted(const char *name, FILE *fp, int terminator)
339 quote_c_style(name, NULL, fp, 0);
343 fputc(terminator, fp);
346 void write_name_quoted_relative(const char *name, const char *prefix,
347 FILE *fp, int terminator)
349 struct strbuf sb = STRBUF_INIT;
351 name = relative_path(name, prefix, &sb);
352 write_name_quoted(name, fp, terminator);
357 /* quote path as relative to the given prefix */
358 char *quote_path(const char *in, const char *prefix, struct strbuf *out, unsigned flags)
360 struct strbuf sb = STRBUF_INIT;
361 const char *rel = relative_path(in, prefix, &sb);
362 int force_dq = ((flags & QUOTE_PATH_QUOTE_SP) && strchr(rel, ' '));
367 * If the caller wants us to enclose the output in a dq-pair
368 * whether quote_c_style_counted() needs to, we do it ourselves
369 * and tell quote_c_style_counted() not to.
372 strbuf_addch(out, '"');
373 quote_c_style_counted(rel, strlen(rel), out, NULL,
374 force_dq ? CQUOTE_NODQ : 0);
376 strbuf_addch(out, '"');
383 * C-style name unquoting.
385 * Quoted should point at the opening double quote.
386 * + Returns 0 if it was able to unquote the string properly, and appends the
387 * result in the strbuf `sb'.
388 * + Returns -1 in case of error, and doesn't touch the strbuf. Though note
389 * that this function will allocate memory in the strbuf, so calling
390 * strbuf_release is mandatory whichever result unquote_c_style returns.
392 * Updates endp pointer to point at one past the ending double quote if given.
394 int unquote_c_style(struct strbuf *sb, const char *quoted, const char **endp)
396 size_t oldlen = sb->len, len;
399 if (*quoted++ != '"')
403 len = strcspn(quoted, "\"\\");
404 strbuf_add(sb, quoted, len);
418 switch ((ch = *quoted++)) {
419 case 'a': ch = '\a'; break;
420 case 'b': ch = '\b'; break;
421 case 'f': ch = '\f'; break;
422 case 'n': ch = '\n'; break;
423 case 'r': ch = '\r'; break;
424 case 't': ch = '\t'; break;
425 case 'v': ch = '\v'; break;
428 break; /* verbatim */
430 /* octal values with first digit over 4 overflow */
431 case '0': case '1': case '2': case '3':
432 ac = ((ch - '0') << 6);
433 if ((ch = *quoted++) < '0' || '7' < ch)
435 ac |= ((ch - '0') << 3);
436 if ((ch = *quoted++) < '0' || '7' < ch)
444 strbuf_addch(sb, ch);
448 strbuf_setlen(sb, oldlen);
452 /* quoting as a string literal for other languages */
454 void perl_quote_buf(struct strbuf *sb, const char *src)
456 const char sq = '\'';
457 const char bq = '\\';
460 strbuf_addch(sb, sq);
461 while ((c = *src++)) {
462 if (c == sq || c == bq)
463 strbuf_addch(sb, bq);
466 strbuf_addch(sb, sq);
469 void python_quote_buf(struct strbuf *sb, const char *src)
471 const char sq = '\'';
472 const char bq = '\\';
473 const char nl = '\n';
476 strbuf_addch(sb, sq);
477 while ((c = *src++)) {
479 strbuf_addch(sb, bq);
480 strbuf_addch(sb, 'n');
483 if (c == sq || c == bq)
484 strbuf_addch(sb, bq);
487 strbuf_addch(sb, sq);
490 void tcl_quote_buf(struct strbuf *sb, const char *src)
494 strbuf_addch(sb, '"');
495 while ((c = *src++)) {
499 case '$': case '\\': case '"':
500 strbuf_addch(sb, '\\');
506 strbuf_addstr(sb, "\\f");
509 strbuf_addstr(sb, "\\r");
512 strbuf_addstr(sb, "\\n");
515 strbuf_addstr(sb, "\\t");
518 strbuf_addstr(sb, "\\v");
522 strbuf_addch(sb, '"');
525 void basic_regex_quote_buf(struct strbuf *sb, const char *src)
530 /* only beginning '^' is special and needs quoting */
531 strbuf_addch(sb, '\\');
532 strbuf_addch(sb, *src++);
535 /* beginning '*' is not special, no quoting */
536 strbuf_addch(sb, *src++);
538 while ((c = *src++)) {
544 strbuf_addch(sb, '\\');
549 /* only the end '$' is special and needs quoting */
551 strbuf_addch(sb, '\\');