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string-list: add string_list initializer helper function

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The string-list API has STRING_LIST_INIT_* macros to be used
to define variables with initializers, but lacks functions
to initialize an uninitialized piece of memory to be used as
a string-list at the run-time.
Introduce `string_list_init()` function for that.

Signed-off-by: Tanay Abhra <tanayabh@gmail.com>
Reviewed-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Tanay Abhra 2014-07-18 02:18:59 -07:00 committed by Junio C Hamano
parent 3d15f536a7
commit 3ed3f5fe85
3 changed files with 13 additions and 0 deletions
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5
Documentation/technical/api-string-list.txt
View File

@ -68,6 +68,11 @@ Functions
* General ones (works with sorted and unsorted lists as well)
`string_list_init`::
Initialize the members of the string_list, set `strdup_strings`
member according to the value of the second parameter.
`filter_string_list`::
Apply a function to each item in a list, retaining only the

6
string-list.c
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@ -1,6 +1,12 @@
#include "cache.h"
#include "string-list.h"
void string_list_init(struct string_list *list, int strdup_strings)
{
memset(list, 0, sizeof(*list));
list->strdup_strings = strdup_strings;
}
/* if there is no exact match, point to the index where the entry could be
* inserted */
static int get_entry_index(const struct string_list *list, const char *string,

2
string-list.h
View File

@ -18,6 +18,8 @@ struct string_list {
#define STRING_LIST_INIT_NODUP { NULL, 0, 0, 0, NULL }
#define STRING_LIST_INIT_DUP { NULL, 0, 0, 1, NULL }
void string_list_init(struct string_list *list, int strdup_strings);
void print_string_list(const struct string_list *p, const char *text);
void string_list_clear(struct string_list *list, int free_util);