File 0002-spa_string-add-spa_streq-and-spa_strneq-for-string.patch of Package pipewire.30043

From d8a9534a9afc09afbb387eb28b01b01f32d5ffe4 Mon Sep 17 00:00:00 2001
From: Peter Hutterer <peter.hutterer@who-t.net>
Date: Tue, 18 May 2021 11:00:25 +1000
Subject: [PATCH] spa/string: add spa_streq() and spa_strneq() for string
 equality

Easier to use than strcmp() since their return value matches expectations. And
they do what is expected with NULL strings, two NULL pointers are equal, one
NULL pointer is not equal.
---
 spa/include/spa/utils/string.h | 22 ++++++++++++++++++++++
 spa/tests/test-utils.c         | 17 +++++++++++++++++
 2 files changed, 39 insertions(+)

diff --git a/spa/include/spa/utils/string.h b/spa/include/spa/utils/string.h
index eddffe9486..31b3a5c8a5 100644
--- a/spa/include/spa/utils/string.h
+++ b/spa/include/spa/utils/string.h
@@ -32,6 +32,28 @@ extern "C" {
 #include <stdbool.h>
 #include <errno.h>
 
+#include <spa/utils/defs.h>
+
+/**
+ * \return true if the two strings are equal, false otherwise
+ *
+ * If both \a a and \a b are NULL, the two are considered equal.
+ */
+static inline bool spa_streq(const char *s1, const char *s2)
+{
+	return SPA_LIKELY(s1 && s2) ? strcmp(s1, s2) == 0 : s1 == s2;
+}
+
+/**
+ * \return true if the two strings are equal, false otherwise
+ *
+ * If both \a a and \a b are NULL, the two are considered equal.
+ */
+static inline bool spa_strneq(const char *s1, const char *s2, size_t len)
+{
+	return SPA_LIKELY(s1 && s2) ? strncmp(s1, s2, len) == 0 : s1 == s2;
+}
+
 /**
  * Convert \a str to an int32_t with the given \a base and store the
  * result in \a val.
diff --git a/spa/tests/test-utils.c b/spa/tests/test-utils.c
index fdf75e6786..7f55ab817c 100644
--- a/spa/tests/test-utils.c
+++ b/spa/tests/test-utils.c
@@ -477,6 +477,22 @@ static void test_strtol(void)
 	spa_assert(!spa_atoi32(NULL, &v, 16) && v == 0xabcd);
 }
 
+static void test_streq(void)
+{
+	spa_assert(spa_streq(NULL, NULL));
+	spa_assert(spa_streq("", ""));
+	spa_assert(spa_streq("a", "a"));
+	spa_assert(spa_streq("abc", "abc"));
+	spa_assert(!spa_streq(NULL, "abc"));
+	spa_assert(!spa_streq("abc", NULL));
+
+	spa_assert(spa_strneq("abc", "aaa", 1));
+	spa_assert(spa_strneq("abc", "abc", 7));
+	spa_assert(!spa_strneq("abc", "aaa", 2));
+	spa_assert(!spa_strneq("abc", NULL, 7));
+	spa_assert(!spa_strneq(NULL, "abc", 7));
+}
+
 int main(int argc, char *argv[])
 {
     test_abi();
@@ -487,5 +503,6 @@ int main(int argc, char *argv[])
     test_hook();
     test_ringbuffer();
     test_strtol();
+    test_streq();
     return 0;
 }
-- 
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