Merge branch 'jc/diff-index-refactor'

diff --git a/string-list.c b/string-list.c
index ddd83c8c76112cecd5d23668aaca467601855a72..51681189e8380cc43ed26d35526a6dff78f1a24c 100644 (file)
--- a/string-list.c
+++ b/string-list.c
@@ -26,10 +26,10 @@ static int get_entry_index(const struct string_list *list, const char *string,
 }
 
 /* returns -1-index if already exists */
-static int add_entry(struct string_list *list, const char *string)
+static int add_entry(int insert_at, struct string_list *list, const char *string)
 {
-       int exact_match;
-       int index = get_entry_index(list, string, &exact_match);
+       int exact_match = 0;
+       int index = insert_at != -1 ? insert_at : get_entry_index(list, string, &exact_match);
 
        if (exact_match)
                return -1 - index;
@@ -51,9 +51,15 @@ static int add_entry(struct string_list *list, const char *string)
        return index;
 }
 
-struct string_list_item *string_list_insert(const char *string, struct string_list *list)
+struct string_list_item *string_list_insert(struct string_list *list, const char *string)
+{
+       return string_list_insert_at_index(list, -1, string);
+}
+
+struct string_list_item *string_list_insert_at_index(struct string_list *list,
+                                                    int insert_at, const char *string)
 {
-       int index = add_entry(list, string);
+       int index = add_entry(insert_at, list, string);
 
        if (index < 0)
                index = -1 - index;
@@ -68,7 +74,17 @@ int string_list_has_string(const struct string_list *list, const char *string)
        return exact_match;
 }
 
-struct string_list_item *string_list_lookup(const char *string, struct string_list *list)
+int string_list_find_insert_index(const struct string_list *list, const char *string,
+                                 int negative_existing_index)
+{
+       int exact_match;
+       int index = get_entry_index(list, string, &exact_match);
+       if (exact_match)
+               index = -1 - (negative_existing_index ? index : 0);
+       return index;
+}
+
+struct string_list_item *string_list_lookup(struct string_list *list, const char *string)
 {
        int exact_match, i = get_entry_index(list, string, &exact_match);
        if (!exact_match)
@@ -76,6 +92,16 @@ struct string_list_item *string_list_lookup(const char *string, struct string_li
        return list->items + i;
 }
 
+int for_each_string_list(struct string_list *list,
+                        string_list_each_func_t fn, void *cb_data)
+{
+       int i, ret = 0;
+       for (i = 0; i < list->nr; i++)
+               if ((ret = fn(&list->items[i], cb_data)))
+                       break;
+       return ret;
+}
+
 void string_list_clear(struct string_list *list, int free_util)
 {
        if (list->items) {
@@ -94,7 +120,26 @@ void string_list_clear(struct string_list *list, int free_util)
        list->nr = list->alloc = 0;
 }
 
-void print_string_list(const char *text, const struct string_list *p)
+void string_list_clear_func(struct string_list *list, string_list_clear_func_t clearfunc)
+{
+       if (list->items) {
+               int i;
+               if (clearfunc) {
+                       for (i = 0; i < list->nr; i++)
+                               clearfunc(list->items[i].util, list->items[i].string);
+               }
+               if (list->strdup_strings) {
+                       for (i = 0; i < list->nr; i++)
+                               free(list->items[i].string);
+               }
+               free(list->items);
+       }
+       list->items = NULL;
+       list->nr = list->alloc = 0;
+}
+
+
+void print_string_list(const struct string_list *p, const char *text)
 {
        int i;
        if ( text )
@@ -103,11 +148,12 @@ void print_string_list(const char *text, const struct string_list *p)
                printf("%s:%p\n", p->items[i].string, p->items[i].util);
 }
 
-struct string_list_item *string_list_append(const char *string, struct string_list *list)
+struct string_list_item *string_list_append(struct string_list *list, const char *string)
 {
        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++;
 }
 
@@ -123,12 +169,19 @@ void sort_string_list(struct string_list *list)
        qsort(list->items, list->nr, sizeof(*list->items), cmp_items);
 }
 
-int unsorted_string_list_has_string(struct string_list *list, const char *string)
+struct string_list_item *unsorted_string_list_lookup(struct string_list *list,
+                                                    const char *string)
 {
        int i;
        for (i = 0; i < list->nr; i++)
                if (!strcmp(string, list->items[i].string))
-                       return 1;
-       return 0;
+                       return list->items + i;
+       return NULL;
+}
+
+int unsorted_string_list_has_string(struct string_list *list,
+                                   const char *string)
+{
+       return unsorted_string_list_lookup(list, string) != NULL;
 }