string_list: add a function string_list_longest_prefix()
Add a function that finds the longest string from a string_list that
is a prefix of a given string.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/test-string-list.c b/test-string-list.c
index 2d6eda7..5e9631f 100644
--- a/test-string-list.c
+++ b/test-string-list.c
@@ -97,6 +97,26 @@
return 0;
}
+ if (argc == 4 && !strcmp(argv[1], "longest_prefix")) {
+ /* arguments: <colon-separated-prefixes>|- <string> */
+ struct string_list prefixes = STRING_LIST_INIT_DUP;
+ int retval;
+ const char *prefix_string = argv[2];
+ const char *string = argv[3];
+ const char *match;
+
+ parse_string_list(&prefixes, prefix_string);
+ match = string_list_longest_prefix(&prefixes, string);
+ if (match) {
+ printf("%s\n", match);
+ retval = 0;
+ }
+ else
+ retval = 1;
+ string_list_clear(&prefixes, 0);
+ return retval;
+ }
+
fprintf(stderr, "%s: unknown function name: %s\n", argv[0],
argv[1] ? argv[1] : "(there was none)");
return 1;
