1 #ifndef FLIB_UTIL_H_

     2 #define FLIB_UTIL_H_

     3 

     4 #include <stddef.h>

     5 #include <stdarg.h>

     6 

     7 /**

     8  * Prints a format string to a newly allocated buffer of the required size.

     9  * Parameters are like those for printf. Returns NULL on error.

    10  *

    11  * Returned buffer must be free()d

    12  */

    13 char *flib_asprintf(const char *fmt, ...);

    14 

    15 /**

    16  * Exactly as flib_asprintf, but accepts va_args.

    17  */

    18 char *flib_vasprintf(const char *fmt, va_list args);

    19 

    20 /**

    21  * Return a duplicate of the provided string, or NULL if an error

    22  * occurs or if str is already NULL.

    23  *

    24  * Returned buffer must be free()d

    25  */

    26 char *flib_strdupnull(const char *str);

    27 

    28 /**

    29  * Return a duplicate of the provided buffer, or NULL if an error

    30  * occurs or if buf is already NULL or if size is 0.

    31  *

    32  * Returned buffer must be free()d

    33  */

    34 void *flib_bufdupnull(const void *buf, size_t size);

    35 

    36 #endif