case insensitive string comparisons

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@1057 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 28 insertions, 0 deletions

diff --git a/firmware/common/strcasecmp.c b/firmware/common/strcasecmp.c
new file mode 100644
index 0000000000..7bd0d61dd5
--- /dev/null
+++ b/firmware/common/strcasecmp.c
@@ -0,0 +1,28 @@
+
+#include <string.h>
+#include <ctype.h>
+
+int strcasecmp(const char *s1, const char *s2)
+{
+    while (*s1 != '\0' && tolower(*s1) == tolower(*s2)) {
+        s1++;
+        s2++;
+    }
+
+    return tolower(*(unsigned char *) s1) - tolower(*(unsigned char *) s2);
+}
+
+int strncasecmp(const char *s1, const char *s2, size_t n)
+{
+    if(!n)
+      return 0;
+
+    while (n-- != 0 && tolower(*s1) == tolower(*s2)) {
+        if(n == 0 || *s1 == '\0')
+          break;
+        s1++;
+        s2++;
+    }
+
+    return tolower(*(unsigned char *) s1) - tolower(*(unsigned char *) s2);
+}