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/** \file file2uri.c
* Conversion for filename to URI and reverse
*/
/* XTrackCAD - Model Railroad CAD
* Copyright (C) 2019 Martin Fischer
*
* 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <string.h>
#include <stdio.h>
#include "wlib.h"
static char *reservedChars = "?#[]@!$&'()*+,;= ";
unsigned
File2URI(char *fileName, unsigned resultLen, char *resultBuffer)
{
char *currentSource = fileName;
char *currentDest;
currentDest = resultBuffer;
while (*currentSource && ((unsigned)(currentDest - resultBuffer) < resultLen - 1)) {
if (*currentSource == FILE_SEP_CHAR[ 0 ]) {
*currentDest++ = '/';
currentSource++;
continue;
}
if (strchr(reservedChars, *currentSource))
{
sprintf(currentDest, "%%%02x", *currentSource);
currentSource++;
currentDest += 3;
} else {
*currentDest++ = *currentSource++;
}
}
*currentDest = '\0';
return(strlen(resultBuffer));
}
unsigned
URI2File(char *encodedFileName, unsigned resultLen, char *resultBuffer)
{
char *currentSource = encodedFileName;
char *currentDest = resultBuffer;
currentSource = encodedFileName;
while (*currentSource && ((unsigned)(currentDest - resultBuffer) < resultLen - 1)) {
if (*currentSource == '/') {
*currentDest++ = FILE_SEP_CHAR[0];
currentSource++;
continue;
}
if (*currentSource == '%') {
char hexCode[3];
memcpy(hexCode, currentSource + 1, 2);
hexCode[2] = '\0';
sscanf(hexCode, "%x", (unsigned int*)currentDest);
currentDest++;
currentSource += 3;
} else {
*currentDest++ = *currentSource++;
}
}
*currentDest = '\0';
return(strlen(resultBuffer));
}
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