2 #include "string-list.h"
4 void string_list_init(struct string_list *list, int strdup_strings)
6 memset(list, 0, sizeof(*list));
7 list->strdup_strings = strdup_strings;
10 /* if there is no exact match, point to the index where the entry could be
12 static int get_entry_index(const struct string_list *list, const char *string,
15 int left = -1, right = list->nr;
16 compare_strings_fn cmp = list->cmp ? list->cmp : strcmp;
18 while (left + 1 < right) {
19 int middle = (left + right) / 2;
20 int compare = cmp(string, list->items[middle].string);
35 /* returns -1-index if already exists */
36 static int add_entry(int insert_at, struct string_list *list, const char *string)
39 int index = insert_at != -1 ? insert_at : get_entry_index(list, string, &exact_match);
44 if (list->nr + 1 >= list->alloc) {
46 list->items = xrealloc(list->items, list->alloc
47 * sizeof(struct string_list_item));
50 memmove(list->items + index + 1, list->items + index,
52 * sizeof(struct string_list_item));
53 list->items[index].string = list->strdup_strings ?
54 xstrdup(string) : (char *)string;
55 list->items[index].util = NULL;
61 struct string_list_item *string_list_insert(struct string_list *list, const char *string)
63 return string_list_insert_at_index(list, -1, string);
66 struct string_list_item *string_list_insert_at_index(struct string_list *list,
67 int insert_at, const char *string)
69 int index = add_entry(insert_at, list, string);
74 return list->items + index;
77 int string_list_has_string(const struct string_list *list, const char *string)
80 get_entry_index(list, string, &exact_match);
84 int string_list_find_insert_index(const struct string_list *list, const char *string,
85 int negative_existing_index)
88 int index = get_entry_index(list, string, &exact_match);
90 index = -1 - (negative_existing_index ? index : 0);
94 struct string_list_item *string_list_lookup(struct string_list *list, const char *string)
96 int exact_match, i = get_entry_index(list, string, &exact_match);
99 return list->items + i;
102 void string_list_remove_duplicates(struct string_list *list, int free_util)
106 compare_strings_fn cmp = list->cmp ? list->cmp : strcmp;
107 for (src = dst = 1; src < list->nr; src++) {
108 if (!cmp(list->items[dst - 1].string, list->items[src].string)) {
109 if (list->strdup_strings)
110 free(list->items[src].string);
112 free(list->items[src].util);
114 list->items[dst++] = list->items[src];
120 int for_each_string_list(struct string_list *list,
121 string_list_each_func_t fn, void *cb_data)
124 for (i = 0; i < list->nr; i++)
125 if ((ret = fn(&list->items[i], cb_data)))
130 void filter_string_list(struct string_list *list, int free_util,
131 string_list_each_func_t want, void *cb_data)
134 for (src = 0; src < list->nr; src++) {
135 if (want(&list->items[src], cb_data)) {
136 list->items[dst++] = list->items[src];
138 if (list->strdup_strings)
139 free(list->items[src].string);
141 free(list->items[src].util);
147 static int item_is_not_empty(struct string_list_item *item, void *unused)
149 return *item->string != '\0';
152 void string_list_remove_empty_items(struct string_list *list, int free_util) {
153 filter_string_list(list, free_util, item_is_not_empty, NULL);
156 void string_list_clear(struct string_list *list, int free_util)
160 if (list->strdup_strings) {
161 for (i = 0; i < list->nr; i++)
162 free(list->items[i].string);
165 for (i = 0; i < list->nr; i++)
166 free(list->items[i].util);
171 list->nr = list->alloc = 0;
174 void string_list_clear_func(struct string_list *list, string_list_clear_func_t clearfunc)
179 for (i = 0; i < list->nr; i++)
180 clearfunc(list->items[i].util, list->items[i].string);
182 if (list->strdup_strings) {
183 for (i = 0; i < list->nr; i++)
184 free(list->items[i].string);
189 list->nr = list->alloc = 0;
193 void print_string_list(const struct string_list *p, const char *text)
197 printf("%s\n", text);
198 for (i = 0; i < p->nr; i++)
199 printf("%s:%p\n", p->items[i].string, p->items[i].util);
202 struct string_list_item *string_list_append_nodup(struct string_list *list,
205 struct string_list_item *retval;
206 ALLOC_GROW(list->items, list->nr + 1, list->alloc);
207 retval = &list->items[list->nr++];
208 retval->string = string;
213 struct string_list_item *string_list_append(struct string_list *list,
216 return string_list_append_nodup(
218 list->strdup_strings ? xstrdup(string) : (char *)string);
222 static compare_strings_fn compare_for_qsort;
224 /* Only call this from inside sort_string_list! */
225 static int cmp_items(const void *a, const void *b)
227 const struct string_list_item *one = a;
228 const struct string_list_item *two = b;
229 return compare_for_qsort(one->string, two->string);
232 void sort_string_list(struct string_list *list)
234 compare_for_qsort = list->cmp ? list->cmp : strcmp;
235 qsort(list->items, list->nr, sizeof(*list->items), cmp_items);
238 struct string_list_item *unsorted_string_list_lookup(struct string_list *list,
242 compare_strings_fn cmp = list->cmp ? list->cmp : strcmp;
244 for (i = 0; i < list->nr; i++)
245 if (!cmp(string, list->items[i].string))
246 return list->items + i;
250 int unsorted_string_list_has_string(struct string_list *list,
253 return unsorted_string_list_lookup(list, string) != NULL;
256 void unsorted_string_list_delete_item(struct string_list *list, int i, int free_util)
258 if (list->strdup_strings)
259 free(list->items[i].string);
261 free(list->items[i].util);
262 list->items[i] = list->items[list->nr-1];
266 int string_list_split(struct string_list *list, const char *string,
267 int delim, int maxsplit)
270 const char *p = string, *end;
272 if (!list->strdup_strings)
273 die("internal error in string_list_split(): "
274 "list->strdup_strings must be set");
277 if (maxsplit >= 0 && count > maxsplit) {
278 string_list_append(list, p);
281 end = strchr(p, delim);
283 string_list_append_nodup(list, xmemdupz(p, end - p));
286 string_list_append(list, p);
292 int string_list_split_in_place(struct string_list *list, char *string,
293 int delim, int maxsplit)
296 char *p = string, *end;
298 if (list->strdup_strings)
299 die("internal error in string_list_split_in_place(): "
300 "list->strdup_strings must not be set");
303 if (maxsplit >= 0 && count > maxsplit) {
304 string_list_append(list, p);
307 end = strchr(p, delim);
310 string_list_append(list, p);
313 string_list_append(list, p);