X-Git-Url: https://git.tokkee.org/?p=tig.git;a=blobdiff_plain;f=tig.h;h=7baf8241b53680eeb9ad61a7216b125a081ef95f;hp=ef298c736a1aea2a922e7f92c91499ad2a653826;hb=HEAD;hpb=ec002272b4e4ff0d336b332af615681fe14a4f9f

diff --git a/tig.h b/tig.h
index ef298c7..7baf824 100644
--- a/tig.h
+++ b/tig.h
@@ -132,6 +132,22 @@ name(type **mem, size_t size, size_t increase)					\
 #define prefixcmp(str1, str2) \
 	strncmp(str1, str2, STRING_SIZE(str2))
 
+static inline int
+ascii_toupper(int c)
+{
+	if (c >= 'a' && c <= 'z')
+		c &= ~0x20;
+	return c;
+}
+
+static inline int
+ascii_tolower(int c)
+{
+	if (c >= 'A' && c <= 'Z')
+		c |= 0x20;
+	return c;
+}
+
 static inline int
 suffixcmp(const char *str, int slen, const char *suffix)
 {
@@ -252,7 +268,7 @@ string_enum_compare(const char *str1, const char *str2, int len)
 
 	/* Diff-Header == DIFF_HEADER */
 	for (i = 0; i < len; i++) {
-		if (toupper(str1[i]) == toupper(str2[i]))
+		if (ascii_toupper(str1[i]) == ascii_toupper(str2[i]))
 			continue;
 
 		if (string_enum_sep(str1[i]) &&
@@ -275,7 +291,7 @@ enum_map_name(const char *name, size_t namelen)
 	int bufpos;
 
 	for (bufpos = 0; bufpos <= namelen; bufpos++) {
-		buf[bufpos] = tolower(name[bufpos]);
+		buf[bufpos] = ascii_tolower(name[bufpos]);
 		if (buf[bufpos] == '_')
 			buf[bufpos] = '-';
 	}