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string_list: add function string_list_append_nodup()

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Add a new function that appends a string to a string_list without
copying it.  This can be used to pass ownership of an already-copied
string to a string_list that has strdup_strings set.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Michael Haggerty
2012-09-12 16:04:42 +02:00
committed by Junio C Hamano
parent 0ce9864461
commit e448fed8e6
3 changed files with 47 additions and 8 deletions
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18
string-list.h
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@ -29,6 +29,7 @@ int for_each_string_list(struct string_list *list,
#define for_each_string_list_item(item,list) \
for (item = (list)->items; item < (list)->items + (list)->nr; ++item)
/* 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,
@ -38,11 +39,28 @@ struct string_list_item *string_list_insert_at_index(struct string_list *list,
int insert_at, const char *string);
struct string_list_item *string_list_lookup(struct string_list *list, const char *string);
/* Use these functions only on unsorted lists: */
/*
* Add string to the end of list. If list->strdup_string is set, then
* string is copied; otherwise the new string_list_entry refers to the
* input string.
*/
struct string_list_item *string_list_append(struct string_list *list, const char *string);
/*
* Like string_list_append(), except string is never copied. When
* list->strdup_strings is set, this function can be used to hand
* ownership of a malloc()ed string to list without making an extra
* copy.
*/
struct string_list_item *string_list_append_nodup(struct string_list *list, char *string);
void sort_string_list(struct string_list *list);
int unsorted_string_list_has_string(struct string_list *list, const char *string);
struct string_list_item *unsorted_string_list_lookup(struct string_list *list,
const char *string);
void unsorted_string_list_delete_item(struct string_list *list, int i, int free_util);
#endif /* STRING_LIST_H */