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Color management architecture: color profiles

Merged Pekka Paalanen requested to merge pq/weston:mr/color-output into main
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  • 4a884ce1
    shared: add str_printf() · 4a884ce1
    Pekka Paalanen authored
    asprintf() has the problem that it leaves *strp undefined when it
    fails. Here is a simple wrapper that ensures NULL if asprintf() fails,
    which is much more convenient to use.
    
    This will be useful in future patches, where one needs to return error
    messages from maybe failing functions, and more.
    
    Signed-off-by: default avatarPekka Paalanen <pekka.paalanen@collabora.com>
+ 27
0
@@ -31,6 +31,8 @@
#include <stdint.h>
#include <errno.h>
#include <assert.h>
#include <stdarg.h>
#include <stdio.h>
/* Convert string to integer
*
@@ -68,4 +70,29 @@ safe_strtoint(const char *str, int32_t *value)
return true;
}
/**
* Exactly like asprintf(), but sets *str_out to NULL if it fails.
*
* If str_out is NULL, does nothing.
*/
static inline void __attribute__ ((format (printf, 2, 3)))
str_printf(char **str_out, const char *fmt, ...)
{
char *msg;
va_list ap;
int ret;
if (!str_out)
return;
va_start(ap, fmt);
ret = vasprintf(&msg, fmt, ap);
va_end(ap);
if (ret >= 0)
*str_out = msg;
else
*str_out = NULL;
}
#endif /* WESTON_STRING_HELPERS_H */
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