Code

detect close failure on just-written file handles
[git.git] / path-list.c
1 #include "cache.h"
2 #include "path-list.h"
4 /* if there is no exact match, point to the index where the entry could be
5  * inserted */
6 static int get_entry_index(const struct path_list *list, const char *path,
7                 int *exact_match)
8 {
9         int left = -1, right = list->nr;
11         while (left + 1 < right) {
12                 int middle = (left + right) / 2;
13                 int compare = strcmp(path, list->items[middle].path);
14                 if (compare < 0)
15                         right = middle;
16                 else if (compare > 0)
17                         left = middle;
18                 else {
19                         *exact_match = 1;
20                         return middle;
21                 }
22         }
24         *exact_match = 0;
25         return right;
26 }
28 /* returns -1-index if already exists */
29 static int add_entry(struct path_list *list, const char *path)
30 {
31         int exact_match;
32         int index = get_entry_index(list, path, &exact_match);
34         if (exact_match)
35                 return -1 - index;
37         if (list->nr + 1 >= list->alloc) {
38                 list->alloc += 32;
39                 list->items = xrealloc(list->items, list->alloc
40                                 * sizeof(struct path_list_item));
41         }
42         if (index < list->nr)
43                 memmove(list->items + index + 1, list->items + index,
44                                 (list->nr - index)
45                                 * sizeof(struct path_list_item));
46         list->items[index].path = list->strdup_paths ?
47                 xstrdup(path) : (char *)path;
48         list->items[index].util = NULL;
49         list->nr++;
51         return index;
52 }
54 struct path_list_item *path_list_insert(const char *path, struct path_list *list)
55 {
56         int index = add_entry(list, path);
58         if (index < 0)
59                 index = -1 - index;
61         return list->items + index;
62 }
64 int path_list_has_path(const struct path_list *list, const char *path)
65 {
66         int exact_match;
67         get_entry_index(list, path, &exact_match);
68         return exact_match;
69 }
71 struct path_list_item *path_list_lookup(const char *path, struct path_list *list)
72 {
73         int exact_match, i = get_entry_index(list, path, &exact_match);
74         if (!exact_match)
75                 return NULL;
76         return list->items + i;
77 }
79 void path_list_clear(struct path_list *list, int free_items)
80 {
81         if (list->items) {
82                 int i;
83                 if (free_items)
84                         for (i = 0; i < list->nr; i++) {
85                                 if (list->strdup_paths)
86                                         free(list->items[i].path);
87                                 free(list->items[i].util);
88                         }
89                 free(list->items);
90         }
91         list->items = NULL;
92         list->nr = list->alloc = 0;
93 }
95 void print_path_list(const char *text, const struct path_list *p)
96 {
97         int i;
98         if ( text )
99                 printf("%s\n", text);
100         for (i = 0; i < p->nr; i++)
101                 printf("%s:%p\n", p->items[i].path, p->items[i].util);