mirror of
https://github.com/git/git.git
synced 2024-12-14 04:18:16 +08:00
9befac470b
Like xmalloc and xrealloc xstrdup dies with a useful message if the native strdup() implementation returns NULL rather than a valid pointer. I just tried to use xstrdup in new code and found it to be missing. However I expected it to be present as xmalloc and xrealloc are already commonly used throughout the code. [jc: removed the part that deals with last_XXX, which I am finding more and more dubious these days.] Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
105 lines
2.3 KiB
C
105 lines
2.3 KiB
C
#include <stdio.h>
|
|
#include "cache.h"
|
|
#include "path-list.h"
|
|
|
|
/* if there is no exact match, point to the index where the entry could be
|
|
* inserted */
|
|
static int get_entry_index(const struct path_list *list, const char *path,
|
|
int *exact_match)
|
|
{
|
|
int left = -1, right = list->nr;
|
|
|
|
while (left + 1 < right) {
|
|
int middle = (left + right) / 2;
|
|
int compare = strcmp(path, list->items[middle].path);
|
|
if (compare < 0)
|
|
right = middle;
|
|
else if (compare > 0)
|
|
left = middle;
|
|
else {
|
|
*exact_match = 1;
|
|
return middle;
|
|
}
|
|
}
|
|
|
|
*exact_match = 0;
|
|
return right;
|
|
}
|
|
|
|
/* returns -1-index if already exists */
|
|
static int add_entry(struct path_list *list, const char *path)
|
|
{
|
|
int exact_match;
|
|
int index = get_entry_index(list, path, &exact_match);
|
|
|
|
if (exact_match)
|
|
return -1 - index;
|
|
|
|
if (list->nr + 1 >= list->alloc) {
|
|
list->alloc += 32;
|
|
list->items = xrealloc(list->items, list->alloc
|
|
* sizeof(struct path_list_item));
|
|
}
|
|
if (index < list->nr)
|
|
memmove(list->items + index + 1, list->items + index,
|
|
(list->nr - index)
|
|
* sizeof(struct path_list_item));
|
|
list->items[index].path = list->strdup_paths ?
|
|
xstrdup(path) : (char *)path;
|
|
list->items[index].util = NULL;
|
|
list->nr++;
|
|
|
|
return index;
|
|
}
|
|
|
|
struct path_list_item *path_list_insert(const char *path, struct path_list *list)
|
|
{
|
|
int index = add_entry(list, path);
|
|
|
|
if (index < 0)
|
|
index = 1 - index;
|
|
|
|
return list->items + index;
|
|
}
|
|
|
|
int path_list_has_path(const struct path_list *list, const char *path)
|
|
{
|
|
int exact_match;
|
|
get_entry_index(list, path, &exact_match);
|
|
return exact_match;
|
|
}
|
|
|
|
struct path_list_item *path_list_lookup(const char *path, struct path_list *list)
|
|
{
|
|
int exact_match, i = get_entry_index(list, path, &exact_match);
|
|
if (!exact_match)
|
|
return NULL;
|
|
return list->items + i;
|
|
}
|
|
|
|
void path_list_clear(struct path_list *list, int free_items)
|
|
{
|
|
if (list->items) {
|
|
int i;
|
|
if (free_items)
|
|
for (i = 0; i < list->nr; i++) {
|
|
if (list->strdup_paths)
|
|
free(list->items[i].path);
|
|
free(list->items[i].util);
|
|
}
|
|
free(list->items);
|
|
}
|
|
list->items = NULL;
|
|
list->nr = list->alloc = 0;
|
|
}
|
|
|
|
void print_path_list(const char *text, const struct path_list *p)
|
|
{
|
|
int i;
|
|
if ( text )
|
|
printf("%s\n", text);
|
|
for (i = 0; i < p->nr; i++)
|
|
printf("%s:%p\n", p->items[i].path, p->items[i].util);
|
|
}
|
|
|