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-rw-r--r--src/core/string.c17
1 files changed, 16 insertions, 1 deletions
diff --git a/src/core/string.c b/src/core/string.c
index 188fe0864..9a1b9b72a 100644
--- a/src/core/string.c
+++ b/src/core/string.c
@@ -27,6 +27,7 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
+#include <strings.h>
#include <ctype.h>
/** @file
@@ -205,11 +206,24 @@ int strncmp ( const char *first, const char *second, size_t max ) {
* @ret diff Difference
*/
int strcasecmp ( const char *first, const char *second ) {
+
+ return strncasecmp ( first, second, ~( ( size_t ) 0 ) );
+}
+
+/**
+ * Compare case-insensitive strings
+ *
+ * @v first First string
+ * @v second Second string
+ * @v max Maximum length to compare
+ * @ret diff Difference
+ */
+int strncasecmp ( const char *first, const char *second, size_t max ) {
const uint8_t *first_bytes = ( ( const uint8_t * ) first );
const uint8_t *second_bytes = ( ( const uint8_t * ) second );
int diff;
- for ( ; ; first_bytes++, second_bytes++ ) {
+ for ( ; max-- ; first_bytes++, second_bytes++ ) {
diff = ( toupper ( *first_bytes ) -
toupper ( *second_bytes ) );
if ( diff )
@@ -217,6 +231,7 @@ int strcasecmp ( const char *first, const char *second ) {
if ( ! *first_bytes )
return 0;
}
+ return 0;
}
/**