use g_ascii_strdown() instead of the custom lowerstr()

Don't duplicate code which is already provided by glib.

3 files changed, 17 insertions, 27 deletions

diff --git a/src/conf.c b/src/conf.c
index 05eb28ff7..ff627e0b6 100644
--- a/src/conf.c
+++ b/src/conf.c
@@ -332,14 +332,15 @@ check_screen_list(char *value)
 	i=0;
 	j=0;
 	while( tmp && tmp[i] ) {
-		tmp[i] = lowerstr(tmp[i]);
-		if (screen_lookup_name(tmp[i]) == NULL)
+		char *name = g_ascii_strdown(tmp[i], -1);
+		if (screen_lookup_name(name) == NULL) {
 			fprintf(stderr,
 				_("Error: Unsupported screen \"%s\"\n"),
-				tmp[i]);
-		else {
+				name);
+			free(name);
+		} else {
 			screen = g_realloc(screen, (j+2)*sizeof(char *));
-			screen[j++] = g_strdup(tmp[i]);
+			screen[j++] = name;
 			screen[j] = NULL;
 		}
 		i++;
diff --git a/src/support.c b/src/support.c
index 3f30671f9..ca0266c1b 100644
--- a/src/support.c
+++ b/src/support.c
@@ -43,24 +43,6 @@ remove_trailing_slash(char *path)
 	return path;
 }
 
-char *
-lowerstr(char *str)
-{
-	gsize i;
-	gsize len = strlen(str);
-
-	if (str == NULL)
-		return NULL;
-
-	i = 0;
-	while (i < len && str[i]) {
-		str[i] = tolower(str[i]);
-		i++;
-	}
-	return str;
-}
-
-
 #ifndef HAVE_BASENAME
 char *
 basename(char *path)
@@ -84,13 +66,21 @@ basename(char *path)
 
 
 #ifndef HAVE_STRCASESTR
-char *
+const char *
 strcasestr(const char *haystack, const char *needle)
 {
+	char *haystack2 = g_utf8_strdown(haystack, -1);
+	char *needle2 = g_utf8_strdown(needle, -1);
+	char *result;
+
 	assert(haystack != NULL);
 	assert(needle != NULL);
 
-	return strstr(lowerstr(haystack), lowerstr(needle));
+	result = strstr(haystack2, needle2);
+	g_free(haystack2);
+	g_free(needle2);
+
+	return haystack + (result - haystack2);
 }
 #endif /* HAVE_STRCASESTR */
 
diff --git a/src/support.h b/src/support.h
index 0679ddc86..5d67b8fa7 100644
--- a/src/support.h
+++ b/src/support.h
@@ -14,8 +14,7 @@ char *basename(char *path);
 #define IS_WHITESPACE(c) (c==' ' || c=='\t' || c=='\r' || c=='\n')
 
 char *remove_trailing_slash(char *path);
-char *lowerstr(char *str);
-char *strcasestr(const char *haystack, const char *needle);
+const char *strcasestr(const char *haystack, const char *needle);
 
 typedef struct {
 	gsize offset;