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author | Simon Ser <contact@emersion.fr> | 2023-02-28 16:00:28 +0100 |
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committer | Simon Ser <contact@emersion.fr> | 2023-04-14 18:34:54 +0200 |
commit | aab4c9da5fb4138ca5f07df8bd8b698d02242a62 (patch) | |
tree | 4f26a160ebce948ca29855da4f05fa42e3c5e815 /common/stringop.c | |
parent | Use output_match_name_or_id() in workspace functions (diff) | |
download | sway-aab4c9da5fb4138ca5f07df8bd8b698d02242a62.tar.gz sway-aab4c9da5fb4138ca5f07df8bd8b698d02242a62.tar.zst sway-aab4c9da5fb4138ca5f07df8bd8b698d02242a62.zip |
Add format_str() and vformat_str()
Simple helpers to allocate and format a string.
Diffstat (limited to 'common/stringop.c')
-rw-r--r-- | common/stringop.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/common/stringop.c b/common/stringop.c index 7fb3fe12..c503143a 100644 --- a/common/stringop.c +++ b/common/stringop.c | |||
@@ -1,5 +1,6 @@ | |||
1 | #define _POSIX_C_SOURCE 200809L | 1 | #define _POSIX_C_SOURCE 200809L |
2 | #include <ctype.h> | 2 | #include <ctype.h> |
3 | #include <stdarg.h> | ||
3 | #include <stdbool.h> | 4 | #include <stdbool.h> |
4 | #include <stdio.h> | 5 | #include <stdio.h> |
5 | #include <stdlib.h> | 6 | #include <stdlib.h> |
@@ -328,3 +329,35 @@ bool expand_path(char **path) { | |||
328 | wordfree(&p); | 329 | wordfree(&p); |
329 | return true; | 330 | return true; |
330 | } | 331 | } |
332 | |||
333 | char *vformat_str(const char *fmt, va_list args) { | ||
334 | char *str = NULL; | ||
335 | va_list args_copy; | ||
336 | va_copy(args_copy, args); | ||
337 | |||
338 | int len = vsnprintf(NULL, 0, fmt, args); | ||
339 | if (len < 0) { | ||
340 | sway_log_errno(SWAY_ERROR, "vsnprintf(\"%s\") failed", fmt); | ||
341 | goto out; | ||
342 | } | ||
343 | |||
344 | str = malloc(len + 1); | ||
345 | if (str == NULL) { | ||
346 | sway_log_errno(SWAY_ERROR, "malloc() failed"); | ||
347 | goto out; | ||
348 | } | ||
349 | |||
350 | vsnprintf(str, len + 1, fmt, args_copy); | ||
351 | |||
352 | out: | ||
353 | va_end(args_copy); | ||
354 | return str; | ||
355 | } | ||
356 | |||
357 | char *format_str(const char *fmt, ...) { | ||
358 | va_list args; | ||
359 | va_start(args, fmt); | ||
360 | char *str = vformat_str(fmt, args); | ||
361 | va_end(args); | ||
362 | return str; | ||
363 | } | ||