branch: factor out delete_branch_config()

diff --git a/string-list.c b/string-list.c
index d9810aba421cbbc844b45ea5ca713a480a699eb2..c54b816244f69614c67c532d20719081a4b34bd4 100644 (file)
--- a/string-list.c
+++ b/string-list.c
@@ -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)
 {
@@ -102,6 +119,43 @@ int for_each_string_list(struct string_list *list,
        return ret;
 }
 
+void filter_string_list(struct string_list *list, int free_util,
+                       string_list_each_func_t want, void *cb_data)
+{
+       int src, dst = 0;
+       for (src = 0; src < list->nr; src++) {
+               if (want(&list->items[src], cb_data)) {
+                       list->items[dst++] = list->items[src];
+               } else {
+                       if (list->strdup_strings)
+                               free(list->items[src].string);
+                       if (free_util)
+                               free(list->items[src].util);
+               }
+       }
+       list->nr = dst;
+}
+
+char *string_list_longest_prefix(const struct string_list *prefixes,
+                                const char *string)
+{
+       int i, max_len = -1;
+       char *retval = NULL;
+
+       for (i = 0; i < prefixes->nr; i++) {
+               char *prefix = prefixes->items[i].string;
+               if (!prefixcmp(string, prefix)) {
+                       int len = strlen(prefix);
+                       if (len > max_len) {
+                               retval = prefix;
+                               max_len = len;
+                       }
+               }
+       }
+
+       return retval;
+}
+
 void string_list_clear(struct string_list *list, int free_util)
 {
        if (list->items) {
@@ -148,13 +202,23 @@ void print_string_list(const struct string_list *p, const char *text)
                printf("%s:%p\n", p->items[i].string, p->items[i].util);
 }
 
-struct string_list_item *string_list_append(struct string_list *list, const char *string)
+struct string_list_item *string_list_append_nodup(struct string_list *list,
+                                                 char *string)
 {
+       struct string_list_item *retval;
        ALLOC_GROW(list->items, list->nr + 1, list->alloc);
-       list->items[list->nr].string =
-               list->strdup_strings ? xstrdup(string) : (char *)string;
-       list->items[list->nr].util = NULL;
-       return list->items + list->nr++;
+       retval = &list->items[list->nr++];
+       retval->string = string;
+       retval->util = NULL;
+       return retval;
+}
+
+struct string_list_item *string_list_append(struct string_list *list,
+                                           const char *string)
+{
+       return string_list_append_nodup(
+                       list,
+                       list->strdup_strings ? xstrdup(string) : (char *)string);
 }
 
 static int cmp_items(const void *a, const void *b)
@@ -194,3 +258,56 @@ void unsorted_string_list_delete_item(struct string_list *list, int i, int free_
        list->items[i] = list->items[list->nr-1];
        list->nr--;
 }
+
+int string_list_split(struct string_list *list, const char *string,
+                     int delim, int maxsplit)
+{
+       int count = 0;
+       const char *p = string, *end;
+
+       if (!list->strdup_strings)
+               die("internal error in string_list_split(): "
+                   "list->strdup_strings must be set");
+       for (;;) {
+               count++;
+               if (maxsplit >= 0 && count > maxsplit) {
+                       string_list_append(list, p);
+                       return count;
+               }
+               end = strchr(p, delim);
+               if (end) {
+                       string_list_append_nodup(list, xmemdupz(p, end - p));
+                       p = end + 1;
+               } else {
+                       string_list_append(list, p);
+                       return count;
+               }
+       }
+}
+
+int string_list_split_in_place(struct string_list *list, char *string,
+                              int delim, int maxsplit)
+{
+       int count = 0;
+       char *p = string, *end;
+
+       if (list->strdup_strings)
+               die("internal error in string_list_split_in_place(): "
+                   "list->strdup_strings must not be set");
+       for (;;) {
+               count++;
+               if (maxsplit >= 0 && count > maxsplit) {
+                       string_list_append(list, p);
+                       return count;
+               }
+               end = strchr(p, delim);
+               if (end) {
+                       *end = '\0';
+                       string_list_append(list, p);
+                       p = end + 1;
+               } else {
+                       string_list_append(list, p);
+                       return count;
+               }
+       }
+}