3 #include "argv-array.h"
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 for (p = src; *p; p++) {
52 if (!isalpha(*p) && !isdigit(*p) && !strchr(ok_punct, *p)) {
53 sq_quote_buf(dst, src);
58 /* if we get here, we did not need quoting */
59 strbuf_addstr(dst, src);
62 void sq_quotef(struct strbuf *dst, const char *fmt, ...)
64 struct strbuf src = STRBUF_INIT;
68 strbuf_vaddf(&src, fmt, ap);
71 sq_quote_buf(dst, src.buf);
75 void sq_quote_argv(struct strbuf *dst, const char **argv)
79 /* Copy into destination buffer. */
80 strbuf_grow(dst, 255);
81 for (i = 0; argv[i]; ++i) {
82 strbuf_addch(dst, ' ');
83 sq_quote_buf(dst, argv[i]);
87 void sq_quote_argv_pretty(struct strbuf *dst, const char **argv)
91 for (i = 0; argv[i]; i++) {
92 strbuf_addch(dst, ' ');
93 sq_quote_buf_pretty(dst, argv[i]);
97 static char *sq_dequote_step(char *arg, char **next)
113 /* We stepped out of sq */
122 if (need_bs_quote(c) && *++src == '\'') {
128 if (!next || !isspace(*src))
132 } while (isspace(c));
140 char *sq_dequote(char *arg)
142 return sq_dequote_step(arg, NULL);
145 static int sq_dequote_to_argv_internal(char *arg,
146 const char ***argv, int *nr, int *alloc,
147 struct argv_array *array)
154 char *dequoted = sq_dequote_step(next, &next);
158 ALLOC_GROW(*argv, *nr + 1, *alloc);
159 (*argv)[(*nr)++] = dequoted;
162 argv_array_push(array, dequoted);
168 int sq_dequote_to_argv(char *arg, const char ***argv, int *nr, int *alloc)
170 return sq_dequote_to_argv_internal(arg, argv, nr, alloc, NULL);
173 int sq_dequote_to_argv_array(char *arg, struct argv_array *array)
175 return sq_dequote_to_argv_internal(arg, NULL, NULL, NULL, array);
178 /* 1 means: quote as octal
179 * 0 means: quote as octal if (quote_path_fully)
180 * -1 means: never quote
183 #define X8(x) x, x, x, x, x, x, x, x
184 #define X16(x) X8(x), X8(x)
185 static signed char const sq_lookup[256] = {
186 /* 0 1 2 3 4 5 6 7 */
187 /* 0x00 */ 1, 1, 1, 1, 1, 1, 1, 'a',
188 /* 0x08 */ 'b', 't', 'n', 'v', 'f', 'r', 1, 1,
190 /* 0x20 */ -1, -1, '"', -1, -1, -1, -1, -1,
191 /* 0x28 */ X16(-1), X16(-1), X16(-1),
192 /* 0x58 */ -1, -1, -1, -1,'\\', -1, -1, -1,
193 /* 0x60 */ X16(-1), X8(-1),
194 /* 0x78 */ -1, -1, -1, -1, -1, -1, -1, 1,
195 /* 0x80 */ /* set to 0 */
198 static inline int sq_must_quote(char c)
200 return sq_lookup[(unsigned char)c] + quote_path_fully > 0;
203 /* returns the longest prefix not needing a quote up to maxlen if positive.
204 This stops at the first \0 because it's marked as a character needing an
206 static size_t next_quote_pos(const char *s, ssize_t maxlen)
210 for (len = 0; !sq_must_quote(s[len]); len++);
212 for (len = 0; len < maxlen && !sq_must_quote(s[len]); len++);
218 * C-style name quoting.
220 * (1) if sb and fp are both NULL, inspect the input name and counts the
221 * number of bytes that are needed to hold c_style quoted version of name,
222 * counting the double quotes around it but not terminating NUL, and
224 * However, if name does not need c_style quoting, it returns 0.
226 * (2) if sb or fp are not NULL, it emits the c_style quoted version
227 * of name, enclosed with double quotes if asked and needed only.
228 * Return value is the same as in (1).
230 static size_t quote_c_style_counted(const char *name, ssize_t maxlen,
231 struct strbuf *sb, FILE *fp, int no_dq)
236 if (sb) strbuf_addch(sb, (c)); \
237 if (fp) fputc((c), fp); \
240 #define EMITBUF(s, l) \
242 if (sb) strbuf_add(sb, (s), (l)); \
243 if (fp) fwrite((s), (l), 1, fp); \
247 size_t len, count = 0;
248 const char *p = name;
253 len = next_quote_pos(p, maxlen);
254 if (len == maxlen || (maxlen < 0 && !p[len]))
257 if (!no_dq && p == name)
263 ch = (unsigned char)*p++;
266 if (sq_lookup[ch] >= ' ') {
269 EMIT(((ch >> 6) & 03) + '0');
270 EMIT(((ch >> 3) & 07) + '0');
271 EMIT(((ch >> 0) & 07) + '0');
276 if (p == name) /* no ending quote needed */
284 size_t quote_c_style(const char *name, struct strbuf *sb, FILE *fp, int nodq)
286 return quote_c_style_counted(name, -1, sb, fp, nodq);
289 void quote_two_c_style(struct strbuf *sb, const char *prefix, const char *path, int nodq)
291 if (quote_c_style(prefix, NULL, NULL, 0) ||
292 quote_c_style(path, NULL, NULL, 0)) {
294 strbuf_addch(sb, '"');
295 quote_c_style(prefix, sb, NULL, 1);
296 quote_c_style(path, sb, NULL, 1);
298 strbuf_addch(sb, '"');
300 strbuf_addstr(sb, prefix);
301 strbuf_addstr(sb, path);
305 void write_name_quoted(const char *name, FILE *fp, int terminator)
308 quote_c_style(name, NULL, fp, 0);
312 fputc(terminator, fp);
315 void write_name_quoted_relative(const char *name, const char *prefix,
316 FILE *fp, int terminator)
318 struct strbuf sb = STRBUF_INIT;
320 name = relative_path(name, prefix, &sb);
321 write_name_quoted(name, fp, terminator);
326 /* quote path as relative to the given prefix */
327 char *quote_path_relative(const char *in, const char *prefix,
330 struct strbuf sb = STRBUF_INIT;
331 const char *rel = relative_path(in, prefix, &sb);
333 quote_c_style_counted(rel, strlen(rel), out, NULL, 0);
340 * C-style name unquoting.
342 * Quoted should point at the opening double quote.
343 * + Returns 0 if it was able to unquote the string properly, and appends the
344 * result in the strbuf `sb'.
345 * + Returns -1 in case of error, and doesn't touch the strbuf. Though note
346 * that this function will allocate memory in the strbuf, so calling
347 * strbuf_release is mandatory whichever result unquote_c_style returns.
349 * Updates endp pointer to point at one past the ending double quote if given.
351 int unquote_c_style(struct strbuf *sb, const char *quoted, const char **endp)
353 size_t oldlen = sb->len, len;
356 if (*quoted++ != '"')
360 len = strcspn(quoted, "\"\\");
361 strbuf_add(sb, quoted, len);
375 switch ((ch = *quoted++)) {
376 case 'a': ch = '\a'; break;
377 case 'b': ch = '\b'; break;
378 case 'f': ch = '\f'; break;
379 case 'n': ch = '\n'; break;
380 case 'r': ch = '\r'; break;
381 case 't': ch = '\t'; break;
382 case 'v': ch = '\v'; break;
385 break; /* verbatim */
387 /* octal values with first digit over 4 overflow */
388 case '0': case '1': case '2': case '3':
389 ac = ((ch - '0') << 6);
390 if ((ch = *quoted++) < '0' || '7' < ch)
392 ac |= ((ch - '0') << 3);
393 if ((ch = *quoted++) < '0' || '7' < ch)
401 strbuf_addch(sb, ch);
405 strbuf_setlen(sb, oldlen);
409 /* quoting as a string literal for other languages */
411 void perl_quote_buf(struct strbuf *sb, const char *src)
413 const char sq = '\'';
414 const char bq = '\\';
417 strbuf_addch(sb, sq);
418 while ((c = *src++)) {
419 if (c == sq || c == bq)
420 strbuf_addch(sb, bq);
423 strbuf_addch(sb, sq);
426 void python_quote_buf(struct strbuf *sb, const char *src)
428 const char sq = '\'';
429 const char bq = '\\';
430 const char nl = '\n';
433 strbuf_addch(sb, sq);
434 while ((c = *src++)) {
436 strbuf_addch(sb, bq);
437 strbuf_addch(sb, 'n');
440 if (c == sq || c == bq)
441 strbuf_addch(sb, bq);
444 strbuf_addch(sb, sq);
447 void tcl_quote_buf(struct strbuf *sb, const char *src)
451 strbuf_addch(sb, '"');
452 while ((c = *src++)) {
456 case '$': case '\\': case '"':
457 strbuf_addch(sb, '\\');
463 strbuf_addstr(sb, "\\f");
466 strbuf_addstr(sb, "\\r");
469 strbuf_addstr(sb, "\\n");
472 strbuf_addstr(sb, "\\t");
475 strbuf_addstr(sb, "\\v");
479 strbuf_addch(sb, '"');
482 void basic_regex_quote_buf(struct strbuf *sb, const char *src)
487 /* only beginning '^' is special and needs quoting */
488 strbuf_addch(sb, '\\');
489 strbuf_addch(sb, *src++);
492 /* beginning '*' is not special, no quoting */
493 strbuf_addch(sb, *src++);
495 while ((c = *src++)) {
501 strbuf_addch(sb, '\\');
506 /* only the end '$' is special and needs quoting */
508 strbuf_addch(sb, '\\');