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path-list: add functions to work with unsorted lists

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Up to now, path-lists were sorted at all times.  But sometimes it
is much more convenient to build the list and sort it at the end,
or sort it not at all.

Add path_list_append() and sort_path_list() to allow that.

Also, add the unsorted_path_list_has_path() function, to do a linear
search.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Johannes Schindelin 2008-02-29 01:44:56 +00:00 committed by Junio C Hamano
parent 6d21667206
commit 363d59df1a
2 changed files with 38 additions and 2 deletions
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30
path-list.c
View File

@ -102,3 +102,33 @@ void print_path_list(const char *text, const struct path_list *p)
for (i = 0; i < p->nr; i++)
printf("%s:%p\n", p->items[i].path, p->items[i].util);
}
struct path_list_item *path_list_append(const char *path, struct path_list *list)
{
ALLOC_GROW(list->items, list->nr + 1, list->alloc);
list->items[list->nr].path =
list->strdup_paths ? xstrdup(path) : (char *)path;
return list->items + list->nr++;
}
static int cmp_items(const void *a, const void *b)
{
const struct path_list_item *one = a;
const struct path_list_item *two = b;
return strcmp(one->path, two->path);
}
void sort_path_list(struct path_list *list)
{
qsort(list->items, list->nr, sizeof(*list->items), cmp_items);
}
int unsorted_path_list_has_path(struct path_list *list, const char *path)
{
int i;
for (i = 0; i < list->nr; i++)
if (!strcmp(path, list->items[i].path))
return 1;
return 0;
}

10
path-list.h
View File

@ -13,10 +13,16 @@ struct path_list
};
void print_path_list(const char *text, const struct path_list *p);
int path_list_has_path(const struct path_list *list, const char *path);
void path_list_clear(struct path_list *list, int free_util);
/* Use these functions only on sorted lists: */
int path_list_has_path(const struct path_list *list, const char *path);
struct path_list_item *path_list_insert(const char *path, struct path_list *list);
struct path_list_item *path_list_lookup(const char *path, struct path_list *list);
/* Use these functions only on unsorted lists: */
struct path_list_item *path_list_append(const char *path, struct path_list *list);
void sort_path_list(struct path_list *list);
int unsorted_path_list_has_path(struct path_list *list, const char *path);
#endif /* PATH_LIST_H */