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Add find_insert_index, insert_at_index and clear_func functions to string_list

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string_list_find_insert_index() and string_list_insert_at_index()
enables you to see if an item is in the string_list, and to
insert at the appropriate index in the list, if not there.
This is usefull if you need to manipulate an existing item,
if present, and insert a new item if not.

Future mailmap code will use this construct to enable
complex (old_name, old_email) -> (new_name, new_email)
lookups.

The string_list_clear_func() allows to call a custom
cleanup function on each item in a string_list, which is
useful is the util member points to a complex structure.

Signed-off-by: Marius Storm-Olsen <marius@trolltech.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Marius Storm-Olsen
2009-02-08 15:34:28 +01:00
committed by Junio C Hamano
parent d551a48816
commit cfa1ee6b34
2 changed files with 48 additions and 4 deletions
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9
string-list.h
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@ -15,9 +15,18 @@ struct string_list
void print_string_list(const char *text, const struct string_list *p);
void string_list_clear(struct string_list *list, int free_util);
/* Use this function to call a custom clear function on each util pointer */
/* The string associated with the util pointer is passed as the second argument */
typedef void (*string_list_clear_func_t)(void *p, const char *str);
void string_list_clear_func(struct string_list *list, string_list_clear_func_t clearfunc);
/* Use these functions only on sorted lists: */
int string_list_has_string(const struct string_list *list, const char *string);
int string_list_find_insert_index(const struct string_list *list, const char *string,
int negative_existing_index);
struct string_list_item *string_list_insert(const char *string, struct string_list *list);
struct string_list_item *string_list_insert_at_index(int insert_at,
const char *string, struct string_list *list);
struct string_list_item *string_list_lookup(const char *string, struct string_list *list);
/* Use these functions only on unsorted lists: */