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/*
* Copyright (c) 2020 - 2023 the ThorVG project. All rights reserved.
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <cstring>
#include "tvgSvgUtil.h"
/************************************************************************/
/* Internal Class Implementation */
/************************************************************************/
static uint8_t _hexCharToDec(const char c)
{
if (c >= 'a') return c - 'a' + 10;
else if (c >= 'A') return c - 'A' + 10;
else return c - '0';
}
/************************************************************************/
/* External Class Implementation */
/************************************************************************/
string svgUtilURLDecode(const char *src)
{
if (!src) return nullptr;
auto length = strlen(src);
if (length == 0) return nullptr;
string decoded;
decoded.reserve(length);
char a, b;
while (*src) {
if (*src == '%' &&
((a = src[1]) && (b = src[2])) &&
(isxdigit(a) && isxdigit(b))) {
decoded += (_hexCharToDec(a) << 4) + _hexCharToDec(b);
src+=3;
} else if (*src == '+') {
decoded += ' ';
src++;
} else {
decoded += *src++;
}
}
return decoded;
}
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