From f70920015c5882213e7de269c4d4ef5d45f5e7e7 Mon Sep 17 00:00:00 2001
From: Anna Schumaker <Anna@OcarinaProject.net>
Date: Thu, 19 May 2016 12:02:56 -0400
Subject: [PATCH] core/string: Add a function for matching tokens

This will be used to replace the current filtering code with a token
comparison for each track.

Signed-off-by: Anna Schumaker <Anna@OcarinaProject.net>
---
 core/string.c         | 12 ++++++++++++
 include/core/string.h |  3 +++
 tests/core/string.c   | 10 ++++++++++
 3 files changed, 25 insertions(+)

diff --git a/core/string.c b/core/string.c
index 0bef7953..512a1202 100644
--- a/core/string.c
+++ b/core/string.c
@@ -118,3 +118,15 @@ int string_compare_tokens(gchar **lhs, gchar **rhs)
 		return -1;
 	return 0;
 }
+
+bool string_match_token(const gchar *prefix, gchar **tokens)
+{
+	unsigned int i;
+
+	for (i = 0; tokens[i]; i++) {
+		if (g_str_has_prefix(tokens[i], prefix))
+			return true;
+	}
+
+	return false;
+}
diff --git a/include/core/string.h b/include/core/string.h
index 4f154448..1fab6ef7 100644
--- a/include/core/string.h
+++ b/include/core/string.h
@@ -40,6 +40,9 @@ static inline bool string_match(const gchar *a, const gchar *b)
 	return (a && b) ? string_compare(a, b) == 0 : false;
 }
 
+/* Returns True if one of the tokens begins with the specified prefix. */
+bool string_match_token(const gchar *, gchar **);
+
 /* Return the length of the string, with NULL checks */
 static inline int string_length(const gchar *str)
 {
diff --git a/tests/core/string.c b/tests/core/string.c
index 727f8ed6..9ed35550 100644
--- a/tests/core/string.c
+++ b/tests/core/string.c
@@ -136,6 +136,15 @@ void test_match()
 	test_equal(string_match("A",  "B"),  (bool)false);
 }
 
+void test_match_tokens()
+{
+	gchar *tokens[3] = { "hyrule", "symphony", NULL };
+
+	test_equal(string_match_token("hyr",  tokens), (bool)true);
+	test_equal(string_match_token("sym",  tokens), (bool)true);
+	test_equal(string_match_token("rule", tokens), (bool)false);
+}
+
 void test_length()
 {
 	test_equal(string_length(NULL), 0);
@@ -152,5 +161,6 @@ DECLARE_UNIT_TESTS(
 	UNIT_TEST("String Comparison", test_compare),
 	UNIT_TEST("String Comparison (Tokens)", test_compare_tokens),
 	UNIT_TEST("String Match", test_match),
+	UNIT_TEST("String Match (Tokens)", test_match_tokens),
 	UNIT_TEST("String Length", test_length),
 );