Refactor Unicode feature (#18333)

1 files changed, 0 insertions, 46 deletions

diff --git a/quantum/utf8.c b/quantum/utf8.c
deleted file mode 100644
index 4b2cd4d8d4..0000000000
--- a/quantum/utf8.c
+++ /dev/null
@@ -1,46 +0,0 @@
-/* Copyright 2021 QMK
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "utf8.h"
-
-// Borrowed from https://nullprogram.com/blog/2017/10/06/
-const char *decode_utf8(const char *str, int32_t *code_point) {
-    const char *next;
-
-    if (str[0] < 0x80) { // U+0000-007F
-        *code_point = str[0];
-        next        = str + 1;
-    } else if ((str[0] & 0xE0) == 0xC0) { // U+0080-07FF
-        *code_point = ((int32_t)(str[0] & 0x1F) << 6) | ((int32_t)(str[1] & 0x3F) << 0);
-        next        = str + 2;
-    } else if ((str[0] & 0xF0) == 0xE0) { // U+0800-FFFF
-        *code_point = ((int32_t)(str[0] & 0x0F) << 12) | ((int32_t)(str[1] & 0x3F) << 6) | ((int32_t)(str[2] & 0x3F) << 0);
-        next        = str + 3;
-    } else if ((str[0] & 0xF8) == 0xF0 && (str[0] <= 0xF4)) { // U+10000-10FFFF
-        *code_point = ((int32_t)(str[0] & 0x07) << 18) | ((int32_t)(str[1] & 0x3F) << 12) | ((int32_t)(str[2] & 0x3F) << 6) | ((int32_t)(str[3] & 0x3F) << 0);
-        next        = str + 4;
-    } else {
-        *code_point = -1;
-        next        = str + 1;
-    }
-
-    // part of a UTF-16 surrogate pair - invalid
-    if (*code_point >= 0xD800 && *code_point <= 0xDFFF) {
-        *code_point = -1;
-    }
-
-    return next;
-}