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d1df5743 JH |
1 | #ifndef STRBUF_H |
2 | #define STRBUF_H | |
b449f4cf | 3 | |
bdfdaa49 JK |
4 | /** |
5 | * strbuf's are meant to be used with all the usual C string and memory | |
6 | * APIs. Given that the length of the buffer is known, it's often better to | |
7 | * use the mem* functions than a str* one (memchr vs. strchr e.g.). | |
8 | * Though, one has to be careful about the fact that str* functions often | |
9 | * stop on NULs and that strbufs may have embedded NULs. | |
10 | * | |
11 | * A strbuf is NUL terminated for convenience, but no function in the | |
12 | * strbuf API actually relies on the string being free of NULs. | |
13 | * | |
14 | * strbufs have some invariants that are very important to keep in mind: | |
15 | * | |
16 | * . The `buf` member is never NULL, so it can be used in any usual C | |
17 | * string operations safely. strbuf's _have_ to be initialized either by | |
18 | * `strbuf_init()` or by `= STRBUF_INIT` before the invariants, though. | |
19 | * + | |
20 | * Do *not* assume anything on what `buf` really is (e.g. if it is | |
21 | * allocated memory or not), use `strbuf_detach()` to unwrap a memory | |
22 | * buffer from its strbuf shell in a safe way. That is the sole supported | |
23 | * way. This will give you a malloced buffer that you can later `free()`. | |
24 | * + | |
25 | * However, it is totally safe to modify anything in the string pointed by | |
26 | * the `buf` member, between the indices `0` and `len-1` (inclusive). | |
27 | * | |
28 | * . The `buf` member is a byte array that has at least `len + 1` bytes | |
29 | * allocated. The extra byte is used to store a `'\0'`, allowing the | |
30 | * `buf` member to be a valid C-string. Every strbuf function ensure this | |
31 | * invariant is preserved. | |
32 | * + | |
33 | * NOTE: It is OK to "play" with the buffer directly if you work it this | |
34 | * way: | |
35 | * + | |
36 | * ---- | |
37 | * strbuf_grow(sb, SOME_SIZE); <1> | |
38 | * strbuf_setlen(sb, sb->len + SOME_OTHER_SIZE); | |
39 | * ---- | |
40 | * <1> Here, the memory array starting at `sb->buf`, and of length | |
41 | * `strbuf_avail(sb)` is all yours, and you can be sure that | |
42 | * `strbuf_avail(sb)` is at least `SOME_SIZE`. | |
43 | * + | |
44 | * NOTE: `SOME_OTHER_SIZE` must be smaller or equal to `strbuf_avail(sb)`. | |
45 | * + | |
46 | * Doing so is safe, though if it has to be done in many places, adding the | |
47 | * missing API to the strbuf module is the way to go. | |
48 | * + | |
49 | * WARNING: Do _not_ assume that the area that is yours is of size `alloc | |
50 | * - 1` even if it's true in the current implementation. Alloc is somehow a | |
51 | * "private" member that should not be messed with. Use `strbuf_avail()` | |
52 | * instead. | |
53 | */ | |
b449f4cf | 54 | |
bdfdaa49 JK |
55 | /** |
56 | * Data Structures | |
57 | * --------------- | |
58 | */ | |
59 | ||
60 | /** | |
61 | * This is the string buffer structure. The `len` member can be used to | |
62 | * determine the current length of the string, and `buf` member provides | |
63 | * access to the string itself. | |
64 | */ | |
d1df5743 | 65 | struct strbuf { |
b449f4cf PH |
66 | size_t alloc; |
67 | size_t len; | |
bf0f910d | 68 | char *buf; |
d1df5743 JH |
69 | }; |
70 | ||
bdfdaa49 | 71 | extern char strbuf_slopbuf[]; |
b315c5c0 | 72 | #define STRBUF_INIT { 0, 0, strbuf_slopbuf } |
b449f4cf | 73 | |
bdfdaa49 JK |
74 | /** |
75 | * Functions | |
76 | * --------- | |
77 | */ | |
78 | ||
79 | /** | |
80 | * * Life Cycle | |
81 | */ | |
82 | ||
83 | /** | |
84 | * Initialize the structure. The second parameter can be zero or a bigger | |
85 | * number to allocate memory, in case you want to prevent further reallocs. | |
86 | */ | |
f1696ee3 | 87 | extern void strbuf_init(struct strbuf *, size_t); |
bdfdaa49 JK |
88 | |
89 | /** | |
90 | * Release a string buffer and the memory it used. You should not use the | |
91 | * string buffer after using this function, unless you initialize it again. | |
92 | */ | |
b449f4cf | 93 | extern void strbuf_release(struct strbuf *); |
bdfdaa49 JK |
94 | |
95 | /** | |
96 | * Detach the string from the strbuf and returns it; you now own the | |
97 | * storage the string occupies and it is your responsibility from then on | |
98 | * to release it with `free(3)` when you are done with it. | |
99 | */ | |
b315c5c0 | 100 | extern char *strbuf_detach(struct strbuf *, size_t *); |
bdfdaa49 JK |
101 | |
102 | /** | |
103 | * Attach a string to a buffer. You should specify the string to attach, | |
104 | * the current length of the string and the amount of allocated memory. | |
105 | * The amount must be larger than the string length, because the string you | |
106 | * pass is supposed to be a NUL-terminated string. This string _must_ be | |
107 | * malloc()ed, and after attaching, the pointer cannot be relied upon | |
108 | * anymore, and neither be free()d directly. | |
109 | */ | |
917c9a71 | 110 | extern void strbuf_attach(struct strbuf *, void *, size_t, size_t); |
bdfdaa49 JK |
111 | |
112 | /** | |
113 | * Swap the contents of two string buffers. | |
114 | */ | |
187e290a NTND |
115 | static inline void strbuf_swap(struct strbuf *a, struct strbuf *b) |
116 | { | |
c76689df PH |
117 | struct strbuf tmp = *a; |
118 | *a = *b; | |
119 | *b = tmp; | |
120 | } | |
b449f4cf | 121 | |
bdfdaa49 JK |
122 | |
123 | /** | |
124 | * * Related to the size of the buffer | |
125 | */ | |
126 | ||
127 | /** | |
128 | * Determine the amount of allocated but unused memory. | |
129 | */ | |
187e290a NTND |
130 | static inline size_t strbuf_avail(const struct strbuf *sb) |
131 | { | |
c76689df | 132 | return sb->alloc ? sb->alloc - sb->len - 1 : 0; |
b449f4cf | 133 | } |
a8f3e221 | 134 | |
bdfdaa49 JK |
135 | /** |
136 | * Ensure that at least this amount of unused memory is available after | |
137 | * `len`. This is used when you know a typical size for what you will add | |
138 | * and want to avoid repetitive automatic resizing of the underlying buffer. | |
139 | * This is never a needed operation, but can be critical for performance in | |
140 | * some cases. | |
141 | */ | |
a8f3e221 JH |
142 | extern void strbuf_grow(struct strbuf *, size_t); |
143 | ||
bdfdaa49 JK |
144 | /** |
145 | * Set the length of the buffer to a given value. This function does *not* | |
146 | * allocate new memory, so you should not perform a `strbuf_setlen()` to a | |
147 | * length that is larger than `len + strbuf_avail()`. `strbuf_setlen()` is | |
148 | * just meant as a 'please fix invariants from this strbuf I just messed | |
149 | * with'. | |
150 | */ | |
187e290a NTND |
151 | static inline void strbuf_setlen(struct strbuf *sb, size_t len) |
152 | { | |
7141efab RS |
153 | if (len > (sb->alloc ? sb->alloc - 1 : 0)) |
154 | die("BUG: strbuf_setlen() beyond buffer"); | |
c76689df PH |
155 | sb->len = len; |
156 | sb->buf[len] = '\0'; | |
b449f4cf | 157 | } |
bdfdaa49 JK |
158 | |
159 | /** | |
160 | * Empty the buffer by setting the size of it to zero. | |
161 | */ | |
b315c5c0 | 162 | #define strbuf_reset(sb) strbuf_setlen(sb, 0) |
b449f4cf | 163 | |
bdfdaa49 JK |
164 | |
165 | /** | |
166 | * * Related to the contents of the buffer | |
167 | */ | |
168 | ||
169 | /** | |
170 | * Strip whitespace from the beginning and end of a string. | |
171 | * Equivalent to performing `strbuf_rtrim()` followed by `strbuf_ltrim()`. | |
172 | */ | |
eacd6dc5 | 173 | extern void strbuf_trim(struct strbuf *); |
bdfdaa49 JK |
174 | |
175 | /** | |
176 | * Strip whitespace from the end of a string. | |
177 | */ | |
f1696ee3 | 178 | extern void strbuf_rtrim(struct strbuf *); |
bdfdaa49 JK |
179 | |
180 | /** | |
181 | * Strip whitespace from the beginning of a string. | |
182 | */ | |
eacd6dc5 | 183 | extern void strbuf_ltrim(struct strbuf *); |
bdfdaa49 JK |
184 | |
185 | /** | |
186 | * Replace the contents of the strbuf with a reencoded form. Returns -1 | |
187 | * on error, 0 on success. | |
188 | */ | |
d4241f52 | 189 | extern int strbuf_reencode(struct strbuf *sb, const char *from, const char *to); |
bdfdaa49 JK |
190 | |
191 | /** | |
192 | * Lowercase each character in the buffer using `tolower`. | |
193 | */ | |
ffb20ce1 | 194 | extern void strbuf_tolower(struct strbuf *sb); |
bdfdaa49 JK |
195 | |
196 | /** | |
197 | * Compare two buffers. Returns an integer less than, equal to, or greater | |
198 | * than zero if the first buffer is found, respectively, to be less than, | |
199 | * to match, or be greater than the second buffer. | |
200 | */ | |
9b200fd6 | 201 | extern int strbuf_cmp(const struct strbuf *, const struct strbuf *); |
eacd6dc5 | 202 | |
bdfdaa49 JK |
203 | |
204 | /** | |
205 | * * Adding data to the buffer | |
206 | * | |
207 | * NOTE: All of the functions in this section will grow the buffer as | |
208 | * necessary. If they fail for some reason other than memory shortage and the | |
209 | * buffer hadn't been allocated before (i.e. the `struct strbuf` was set to | |
210 | * `STRBUF_INIT`), then they will free() it. | |
211 | */ | |
212 | ||
213 | /** | |
214 | * Add a single character to the buffer. | |
215 | */ | |
216 | static inline void strbuf_addch(struct strbuf *sb, int c) | |
217 | { | |
218 | strbuf_grow(sb, 1); | |
219 | sb->buf[sb->len++] = c; | |
220 | sb->buf[sb->len] = '\0'; | |
221 | } | |
222 | ||
223 | /** | |
224 | * Add a character the specified number of times to the buffer. | |
225 | */ | |
226 | extern void strbuf_addchars(struct strbuf *sb, int c, size_t n); | |
227 | ||
228 | /** | |
229 | * Insert data to the given position of the buffer. The remaining contents | |
230 | * will be shifted, not overwritten. | |
231 | */ | |
232 | extern void strbuf_insert(struct strbuf *, size_t pos, const void *, size_t); | |
233 | ||
234 | /** | |
235 | * Remove given amount of data from a given position of the buffer. | |
236 | */ | |
237 | extern void strbuf_remove(struct strbuf *, size_t pos, size_t len); | |
238 | ||
239 | /** | |
240 | * Remove the bytes between `pos..pos+len` and replace it with the given | |
241 | * data. | |
242 | */ | |
243 | extern void strbuf_splice(struct strbuf *, size_t pos, size_t len, | |
244 | const void *, size_t); | |
245 | ||
246 | /** | |
247 | * Add a NUL-terminated string to the buffer. Each line will be prepended | |
248 | * by a comment character and a blank. | |
249 | */ | |
250 | extern void strbuf_add_commented_lines(struct strbuf *out, const char *buf, size_t size); | |
251 | ||
252 | ||
253 | /** | |
254 | * Add data of given length to the buffer. | |
255 | */ | |
256 | extern void strbuf_add(struct strbuf *, const void *, size_t); | |
257 | ||
258 | /** | |
259 | * Add a NUL-terminated string to the buffer. | |
260 | * | |
261 | * NOTE: This function will *always* be implemented as an inline or a macro | |
262 | * using strlen, meaning that this is efficient to write things like: | |
263 | * | |
264 | * ---- | |
265 | * strbuf_addstr(sb, "immediate string"); | |
266 | * ---- | |
267 | * | |
268 | */ | |
269 | static inline void strbuf_addstr(struct strbuf *sb, const char *s) | |
270 | { | |
271 | strbuf_add(sb, s, strlen(s)); | |
272 | } | |
273 | ||
274 | /** | |
275 | * Copy the contents of another buffer at the end of the current one. | |
276 | */ | |
277 | static inline void strbuf_addbuf(struct strbuf *sb, const struct strbuf *sb2) | |
278 | { | |
279 | strbuf_grow(sb, sb2->len); | |
280 | strbuf_add(sb, sb2->buf, sb2->len); | |
281 | } | |
282 | ||
283 | /** | |
284 | * Copy part of the buffer from a given position till a given length to the | |
285 | * end of the buffer. | |
286 | */ | |
287 | extern void strbuf_adddup(struct strbuf *sb, size_t pos, size_t len); | |
288 | ||
289 | /** | |
290 | * This function can be used to expand a format string containing | |
291 | * placeholders. To that end, it parses the string and calls the specified | |
292 | * function for every percent sign found. | |
293 | * | |
294 | * The callback function is given a pointer to the character after the `%` | |
295 | * and a pointer to the struct strbuf. It is expected to add the expanded | |
296 | * version of the placeholder to the strbuf, e.g. to add a newline | |
297 | * character if the letter `n` appears after a `%`. The function returns | |
298 | * the length of the placeholder recognized and `strbuf_expand()` skips | |
299 | * over it. | |
300 | * | |
301 | * The format `%%` is automatically expanded to a single `%` as a quoting | |
302 | * mechanism; callers do not need to handle the `%` placeholder themselves, | |
303 | * and the callback function will not be invoked for this placeholder. | |
304 | * | |
305 | * All other characters (non-percent and not skipped ones) are copied | |
306 | * verbatim to the strbuf. If the callback returned zero, meaning that the | |
307 | * placeholder is unknown, then the percent sign is copied, too. | |
308 | * | |
309 | * In order to facilitate caching and to make it possible to give | |
310 | * parameters to the callback, `strbuf_expand()` passes a context pointer, | |
311 | * which can be used by the programmer of the callback as she sees fit. | |
312 | */ | |
313 | typedef size_t (*expand_fn_t) (struct strbuf *sb, const char *placeholder, void *context); | |
314 | extern void strbuf_expand(struct strbuf *sb, const char *format, expand_fn_t fn, void *context); | |
315 | ||
316 | /** | |
317 | * Used as callback for `strbuf_expand()`, expects an array of | |
318 | * struct strbuf_expand_dict_entry as context, i.e. pairs of | |
319 | * placeholder and replacement string. The array needs to be | |
320 | * terminated by an entry with placeholder set to NULL. | |
321 | */ | |
322 | struct strbuf_expand_dict_entry { | |
323 | const char *placeholder; | |
324 | const char *value; | |
325 | }; | |
326 | extern size_t strbuf_expand_dict_cb(struct strbuf *sb, const char *placeholder, void *context); | |
327 | ||
328 | /** | |
329 | * Append the contents of one strbuf to another, quoting any | |
330 | * percent signs ("%") into double-percents ("%%") in the | |
331 | * destination. This is useful for literal data to be fed to either | |
332 | * strbuf_expand or to the *printf family of functions. | |
333 | */ | |
334 | extern void strbuf_addbuf_percentquote(struct strbuf *dst, const struct strbuf *src); | |
335 | ||
336 | /** | |
337 | * Append the given byte size as a human-readable string (i.e. 12.23 KiB, | |
338 | * 3.50 MiB). | |
339 | */ | |
340 | extern void strbuf_humanise_bytes(struct strbuf *buf, off_t bytes); | |
341 | ||
342 | /** | |
343 | * Add a formatted string to the buffer. | |
344 | */ | |
345 | __attribute__((format (printf,2,3))) | |
346 | extern void strbuf_addf(struct strbuf *sb, const char *fmt, ...); | |
347 | ||
348 | /** | |
349 | * Add a formatted string prepended by a comment character and a | |
350 | * blank to the buffer. | |
351 | */ | |
352 | __attribute__((format (printf, 2, 3))) | |
353 | extern void strbuf_commented_addf(struct strbuf *sb, const char *fmt, ...); | |
354 | ||
355 | __attribute__((format (printf,2,0))) | |
356 | extern void strbuf_vaddf(struct strbuf *sb, const char *fmt, va_list ap); | |
357 | ||
358 | /** | |
359 | * Read a given size of data from a FILE* pointer to the buffer. | |
360 | * | |
361 | * NOTE: The buffer is rewound if the read fails. If -1 is returned, | |
362 | * `errno` must be consulted, like you would do for `read(3)`. | |
363 | * `strbuf_read()`, `strbuf_read_file()` and `strbuf_getline()` has the | |
364 | * same behaviour as well. | |
365 | */ | |
366 | extern size_t strbuf_fread(struct strbuf *, size_t, FILE *); | |
367 | ||
368 | /** | |
369 | * Read the contents of a given file descriptor. The third argument can be | |
370 | * used to give a hint about the file size, to avoid reallocs. If read fails, | |
371 | * any partial read is undone. | |
372 | */ | |
373 | extern ssize_t strbuf_read(struct strbuf *, int fd, size_t hint); | |
374 | ||
375 | /** | |
376 | * Read the contents of a file, specified by its path. The third argument | |
377 | * can be used to give a hint about the file size, to avoid reallocs. | |
378 | */ | |
379 | extern int strbuf_read_file(struct strbuf *sb, const char *path, size_t hint); | |
380 | ||
381 | /** | |
382 | * Read the target of a symbolic link, specified by its path. The third | |
383 | * argument can be used to give a hint about the size, to avoid reallocs. | |
384 | */ | |
385 | extern int strbuf_readlink(struct strbuf *sb, const char *path, size_t hint); | |
386 | ||
387 | /** | |
388 | * Read a line from a FILE *, overwriting the existing contents | |
389 | * of the strbuf. The second argument specifies the line | |
390 | * terminator character, typically `'\n'`. | |
391 | * Reading stops after the terminator or at EOF. The terminator | |
392 | * is removed from the buffer before returning. Returns 0 unless | |
393 | * there was nothing left before EOF, in which case it returns `EOF`. | |
394 | */ | |
395 | extern int strbuf_getline(struct strbuf *, FILE *, int); | |
396 | ||
397 | /** | |
398 | * Like `strbuf_getline`, but keeps the trailing terminator (if | |
399 | * any) in the buffer. | |
400 | */ | |
401 | extern int strbuf_getwholeline(struct strbuf *, FILE *, int); | |
402 | ||
403 | /** | |
404 | * Like `strbuf_getwholeline`, but operates on a file descriptor. | |
405 | * It reads one character at a time, so it is very slow. Do not | |
406 | * use it unless you need the correct position in the file | |
407 | * descriptor. | |
408 | */ | |
409 | extern int strbuf_getwholeline_fd(struct strbuf *, int, int); | |
410 | ||
411 | /** | |
412 | * Set the buffer to the path of the current working directory. | |
413 | */ | |
414 | extern int strbuf_getcwd(struct strbuf *sb); | |
415 | ||
416 | /** | |
417 | * Add a path to a buffer, converting a relative path to an | |
418 | * absolute one in the process. Symbolic links are not | |
419 | * resolved. | |
420 | */ | |
421 | extern void strbuf_add_absolute_path(struct strbuf *sb, const char *path); | |
422 | ||
423 | /** | |
424 | * Strip whitespace from a buffer. The second parameter controls if | |
425 | * comments are considered contents to be removed or not. | |
426 | */ | |
427 | extern void stripspace(struct strbuf *buf, int skip_comments); | |
428 | ||
6dda4e60 JK |
429 | static inline int strbuf_strip_suffix(struct strbuf *sb, const char *suffix) |
430 | { | |
431 | if (strip_suffix_mem(sb->buf, &sb->len, suffix)) { | |
432 | strbuf_setlen(sb, sb->len); | |
433 | return 1; | |
434 | } else | |
435 | return 0; | |
436 | } | |
437 | ||
06379a65 MH |
438 | /* |
439 | * Split str (of length slen) at the specified terminator character. | |
440 | * Return a null-terminated array of pointers to strbuf objects | |
441 | * holding the substrings. The substrings include the terminator, | |
442 | * except for the last substring, which might be unterminated if the | |
443 | * original string did not end with a terminator. If max is positive, | |
444 | * then split the string into at most max substrings (with the last | |
445 | * substring containing everything following the (max-1)th terminator | |
446 | * character). | |
447 | * | |
448 | * For lighter-weight alternatives, see string_list_split() and | |
449 | * string_list_split_in_place(). | |
450 | */ | |
2f1d9e2b | 451 | extern struct strbuf **strbuf_split_buf(const char *, size_t, |
17b73dc6 | 452 | int terminator, int max); |
06379a65 MH |
453 | |
454 | /* | |
455 | * Split a NUL-terminated string at the specified terminator | |
456 | * character. See strbuf_split_buf() for more information. | |
457 | */ | |
2f1d9e2b | 458 | static inline struct strbuf **strbuf_split_str(const char *str, |
17b73dc6 | 459 | int terminator, int max) |
2f1d9e2b | 460 | { |
17b73dc6 | 461 | return strbuf_split_buf(str, strlen(str), terminator, max); |
2f1d9e2b | 462 | } |
06379a65 MH |
463 | |
464 | /* | |
465 | * Split a strbuf at the specified terminator character. See | |
466 | * strbuf_split_buf() for more information. | |
467 | */ | |
2f1d9e2b | 468 | static inline struct strbuf **strbuf_split_max(const struct strbuf *sb, |
17b73dc6 | 469 | int terminator, int max) |
2f1d9e2b | 470 | { |
17b73dc6 | 471 | return strbuf_split_buf(sb->buf, sb->len, terminator, max); |
2f1d9e2b | 472 | } |
06379a65 MH |
473 | |
474 | /* | |
475 | * Split a strbuf at the specified terminator character. See | |
476 | * strbuf_split_buf() for more information. | |
477 | */ | |
17b73dc6 MH |
478 | static inline struct strbuf **strbuf_split(const struct strbuf *sb, |
479 | int terminator) | |
28fc3a68 | 480 | { |
17b73dc6 | 481 | return strbuf_split_max(sb, terminator, 0); |
28fc3a68 | 482 | } |
06379a65 MH |
483 | |
484 | /* | |
485 | * Free a NULL-terminated list of strbufs (for example, the return | |
486 | * values of the strbuf_split*() functions). | |
487 | */ | |
eacd6dc5 | 488 | extern void strbuf_list_free(struct strbuf **); |
f1696ee3 | 489 | |
bdfdaa49 JK |
490 | /** |
491 | * Launch the user preferred editor to edit a file and fill the buffer | |
492 | * with the file's contents upon the user completing their editing. The | |
493 | * third argument can be used to set the environment which the editor is | |
494 | * run in. If the buffer is NULL the editor is launched as usual but the | |
495 | * file's contents are not read into the buffer upon completion. | |
496 | */ | |
497 | extern int launch_editor(const char *path, struct strbuf *buffer, const char *const *env); | |
b449f4cf | 498 | |
895680f0 JH |
499 | extern void strbuf_add_lines(struct strbuf *sb, const char *prefix, const char *buf, size_t size); |
500 | ||
5963c036 MH |
501 | /* |
502 | * Append s to sb, with the characters '<', '>', '&' and '"' converted | |
503 | * into XML entities. | |
504 | */ | |
505 | extern void strbuf_addstr_xml_quoted(struct strbuf *sb, const char *s); | |
506 | ||
895680f0 JH |
507 | static inline void strbuf_complete_line(struct strbuf *sb) |
508 | { | |
509 | if (sb->len && sb->buf[sb->len - 1] != '\n') | |
510 | strbuf_addch(sb, '\n'); | |
511 | } | |
512 | ||
a552de75 | 513 | extern int strbuf_branchname(struct strbuf *sb, const char *name); |
a2fab531 | 514 | extern int strbuf_check_branch_ref(struct strbuf *sb, const char *name); |
a552de75 | 515 | |
c505116b JK |
516 | extern void strbuf_addstr_urlencode(struct strbuf *, const char *, |
517 | int reserved); | |
679eebe2 | 518 | |
9a0a30aa NTND |
519 | __attribute__((format (printf,1,2))) |
520 | extern int printf_ln(const char *fmt, ...); | |
521 | __attribute__((format (printf,2,3))) | |
522 | extern int fprintf_ln(FILE *fp, const char *fmt, ...); | |
523 | ||
88d5a6f6 JK |
524 | char *xstrdup_tolower(const char *); |
525 | ||
30a0ddb7 JK |
526 | /* |
527 | * Create a newly allocated string using printf format. You can do this easily | |
528 | * with a strbuf, but this provides a shortcut to save a few lines. | |
529 | */ | |
530 | __attribute__((format (printf, 1, 0))) | |
531 | char *xstrvfmt(const char *fmt, va_list ap); | |
532 | __attribute__((format (printf, 1, 2))) | |
533 | char *xstrfmt(const char *fmt, ...); | |
534 | ||
d1df5743 | 535 | #endif /* STRBUF_H */ |