diff options
-rw-r--r-- | Documentation/technical/api-argv-array.txt | 8 | ||||
-rw-r--r-- | argv-array.c | 20 | ||||
-rw-r--r-- | argv-array.h | 2 |
3 files changed, 30 insertions, 0 deletions
diff --git a/Documentation/technical/api-argv-array.txt b/Documentation/technical/api-argv-array.txt index 1b7d8f140c..6b97d6db74 100644 --- a/Documentation/technical/api-argv-array.txt +++ b/Documentation/technical/api-argv-array.txt @@ -49,3 +49,11 @@ Functions `argv_array_clear`:: Free all memory associated with the array and return it to the initial, empty state. + +`argv_array_detach`:: + Detach the argv array from the `struct argv_array`, transfering + ownership of the allocated array and strings. + +`argv_array_free_detached`:: + Free the memory allocated by a `struct argv_array` that was later + detached and is now no longer needed. diff --git a/argv-array.c b/argv-array.c index 0b5f8898a1..aab50d6a97 100644 --- a/argv-array.c +++ b/argv-array.c @@ -59,3 +59,23 @@ void argv_array_clear(struct argv_array *array) } argv_array_init(array); } + +const char **argv_array_detach(struct argv_array *array, int *argc) +{ + const char **argv = + array->argv == empty_argv || array->argc == 0 ? NULL : array->argv; + if (argc) + *argc = array->argc; + argv_array_init(array); + return argv; +} + +void argv_array_free_detached(const char **argv) +{ + if (argv) { + int i; + for (i = 0; argv[i]; i++) + free((char **)argv[i]); + free(argv); + } +} diff --git a/argv-array.h b/argv-array.h index b93a69c36c..b3ef351b44 100644 --- a/argv-array.h +++ b/argv-array.h @@ -17,5 +17,7 @@ __attribute__((format (printf,2,3))) void argv_array_pushf(struct argv_array *, const char *fmt, ...); void argv_array_pushl(struct argv_array *, ...); void argv_array_clear(struct argv_array *); +const char **argv_array_detach(struct argv_array *array, int *argc); +void argv_array_free_detached(const char **argv); #endif /* ARGV_ARRAY_H */ |