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string_list: add a new function, string_list_remove_duplicates()

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Add a function that deletes duplicate entries from a sorted
string_list.

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 16:04:45 +02:00
committed by Junio C Hamano
parent eb5f0c7a61
commit 31d5451eed
5 changed files with 60 additions and 0 deletions
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17
string-list.c
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@ -92,6 +92,23 @@ struct string_list_item *string_list_lookup(struct string_list *list, const char
return list->items + i;
}
void string_list_remove_duplicates(struct string_list *list, int free_util)
{
if (list->nr > 1) {
int src, dst;
for (src = dst = 1; src < list->nr; src++) {
if (!strcmp(list->items[dst - 1].string, list->items[src].string)) {
if (list->strdup_strings)
free(list->items[src].string);
if (free_util)
free(list->items[src].util);
} else
list->items[dst++] = list->items[src];
}
list->nr = dst;
}
}
int for_each_string_list(struct string_list *list,
string_list_each_func_t fn, void *cb_data)
{