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authorHeinrich Schuchardt <xypron.glpk@gmx.de>2018-09-04 19:34:56 +0200
committerAlexander Graf <agraf@suse.de>2018-09-23 21:55:29 +0200
commitb5130a81251d338be96e02134d6fca7c00229e07 (patch)
tree2569d4a46d4a4a7ce392edf778969e9526b80cd6 /lib/charset.c
parent5b2118a2ad3bd1b75dd1650db193a2f6182fa3de (diff)
lib: charset: upper/lower case conversion
Provide functions for upper and lower case conversion. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'lib/charset.c')
-rw-r--r--lib/charset.c47
1 files changed, 47 insertions, 0 deletions
diff --git a/lib/charset.c b/lib/charset.c
index 39c8329830..72c808ce64 100644
--- a/lib/charset.c
+++ b/lib/charset.c
@@ -6,8 +6,18 @@
*/
#include <charset.h>
+#include <capitalization.h>
#include <malloc.h>
+static struct capitalization_table capitalization_table[] =
+#ifdef CONFIG_EFI_UNICODE_CAPITALIZATION
+ UNICODE_CAPITALIZATION_TABLE;
+#elif CONFIG_FAT_DEFAULT_CODEPAGE == 1250
+ CP1250_CAPITALIZATION_TABLE;
+#else
+ CP437_CAPITALIZATION_TABLE;
+#endif
+
s32 utf8_get(const char **src)
{
s32 code = 0;
@@ -241,6 +251,43 @@ int utf16_utf8_strncpy(char **dst, const u16 *src, size_t count)
return 0;
}
+s32 utf_to_lower(const s32 code)
+{
+ struct capitalization_table *pos = capitalization_table;
+ s32 ret = code;
+
+ if (code <= 0x7f) {
+ if (code >= 'A' && code <= 'Z')
+ ret += 0x20;
+ return ret;
+ }
+ for (; pos->upper; ++pos) {
+ if (pos->upper == code) {
+ ret = pos->lower;
+ break;
+ }
+ }
+ return ret;
+}
+
+s32 utf_to_upper(const s32 code)
+{
+ struct capitalization_table *pos = capitalization_table;
+ s32 ret = code;
+
+ if (code <= 0x7f) {
+ if (code >= 'a' && code <= 'z')
+ ret -= 0x20;
+ return ret;
+ }
+ for (; pos->lower; ++pos) {
+ if (pos->lower == code) {
+ ret = pos->upper;
+ break;
+ }
+ }
+ return ret;
+}
size_t u16_strlen(const u16 *in)
{