[PATCH 5/7] string-list: add unsorted_string_list_lookup()
From: Stephen Boyd <hidden>
Date: 2016-06-15 22:48:29
Subsystem:
documentation, the rest · Maintainers:
Jonathan Corbet, Linus Torvalds
Sometimes users need to lookup a string in an unsorted string_list. In that case they should use this function instead of the version for sorted strings. Signed-off-by: Stephen Boyd <redacted> --- Documentation/technical/api-string-list.txt | 6 +++++- string-list.c | 13 ++++++++++--- string-list.h | 3 ++- 3 files changed, 17 insertions(+), 5 deletions(-)
diff --git a/Documentation/technical/api-string-list.txt b/Documentation/technical/api-string-list.txt
index 293bb15..6d8c24b 100644
--- a/Documentation/technical/api-string-list.txt
+++ b/Documentation/technical/api-string-list.txt@@ -104,8 +104,12 @@ write `string_list_insert(...)->util = ...;`. `unsorted_string_list_has_string`:: It's like `string_list_has_string()` but for unsorted lists. + +`unsorted_string_list_lookup`:: + + It's like `string_list_lookup()` but for unsorted lists. + -This function needs to look through all items, as opposed to its +The above two functions need to look through all items, as opposed to their counterpart for sorted lists, which performs a binary search. Data structures
diff --git a/string-list.c b/string-list.c
index 1ac536e..c9ad7fc 100644
--- a/string-list.c
+++ b/string-list.c@@ -168,12 +168,19 @@ 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; }
diff --git a/string-list.h b/string-list.h
index 6569cf6..63b69c8 100644
--- a/string-list.h
+++ b/string-list.h@@ -38,5 +38,6 @@ struct string_list_item *string_list_lookup(const char *string, struct string_li struct string_list_item *string_list_append(const char *string, struct string_list *list); void sort_string_list(struct string_list *list); 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); #endif /* STRING_LIST_H */
--
1.7.0.3.254.g4503b