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61 lines
1.5 KiB
61 lines
1.5 KiB
/**
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* \file
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*
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* \author Georg Hopp
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*
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* \copyright
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* Copyright © 2013 Georg Hopp
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <sys/types.h>
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#include "hexmap.h"
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/**
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* Decode an url encoded string. This expects a valid url
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* encoded string and it size as arguments, else the behaviour
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* of this function is undefined.
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* This function modifies the data in buffer. No copy is made.
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* The reason for this is only performance.
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*/
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size_t
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TR_urldecode(char * buffer, size_t nbuffer)
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{
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char * buf_ptr = buffer;
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char * res_ptr = buffer;
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for(; 0 < nbuffer; nbuffer--, buf_ptr++, res_ptr++) {
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switch(*buf_ptr) {
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case '%':
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*res_ptr = HEXVAL(&(buf_ptr[1]));
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buf_ptr += 2;
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nbuffer -= 2;
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break;
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case '+':
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*buf_ptr = ' ';
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/* intended drop through */
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default:
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*res_ptr = *buf_ptr;
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break;
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}
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}
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return res_ptr - buffer;
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}
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// vim: set ft=c ts=4 sw=4:
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