aboutsummaryrefslogtreecommitdiff
path: root/lib/src/unescape.c
diff options
context:
space:
mode:
Diffstat (limited to 'lib/src/unescape.c')
-rw-r--r--lib/src/unescape.c94
1 files changed, 0 insertions, 94 deletions
diff --git a/lib/src/unescape.c b/lib/src/unescape.c
deleted file mode 100644
index 2d48c92..0000000
--- a/lib/src/unescape.c
+++ /dev/null
@@ -1,94 +0,0 @@
-/* SPDX-License-Identifier: GPL-3.0-or-later */
-/*
- * Copyright (C) 2018 - David Oberhollenzer
- *
- * 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 3 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 <https://www.gnu.org/licenses/>.
- */
-#include <stdlib.h>
-#include <ctype.h>
-#include <errno.h>
-
-#include "util.h"
-
-static int xdigit(int x)
-{
- if (isupper(x))
- return x - 'A' + 0x0A;
- if (islower(x))
- return x - 'a' + 0x0A;
- return x - '0';
-}
-
-int unescape(char *src)
-{
- char *dst = src;
- int c;
-
- for (;;) {
- while (*src != '"' && *src != '\0')
- *(dst++) = *(src++);
-
- if (*src == '\0')
- break;
-
- ++src;
-
- while ((c = *(src++)) != '"') {
- if (c == '\0')
- return -1;
-
- if (c == '\\') {
- c = *(src++);
-
- switch (c) {
- case 'a': c = '\a'; break;
- case 'b': c = '\b'; break;
- case 'f': c = '\f'; break;
- case 'n': c = '\n'; break;
- case 't': c = '\t'; break;
- case '\\':
- case '"':
- case '%':
- break;
- case 'x':
- c = 0;
- if (isxdigit(*src))
- c = (c<<4) | xdigit(*(src++));
- if (isxdigit(*src))
- c = (c<<4) | xdigit(*(src++));
- break;
- case '0':
- c = 0;
- if (isdigit(*src) && *src < '8')
- c = (c<<3) | (*(src++) - '0');
- if (isdigit(*src) && *src < '8')
- c = (c<<3) | (*(src++) - '0');
- if (isdigit(*src) && *src < '8')
- c = (c<<3) | (*(src++) - '0');
- break;
- default:
- return -1;
- }
-
- if (c == 0)
- return -1;
- }
-
- *(dst++) = c;
- }
- }
-
- *(dst++) = '\0';
- return 0;
-}