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/* -*- c -*- */
/*
* builtins/www.c
*
* chpp
*
* Copyright (C) 1998 Mark Probst
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <assert.h>
#include "../environment.h"
#include "../output.h"
#include "../error.h"
#include "builtins.h"
void
builtInUrldecode (int numArgs, macroArgument *args, environment *env, outputWriter *ow)
{
int i,
length;
char *data;
if (!(numArgs == 1))
{
issueError(ERRMAC_WRONG_NUM_ARGS, "w3urldecode");
return;
}
transformArgumentToScalar(&args[0]);
length = args[0].value.value->v.scalar.scalar.length;
data = args[0].value.value->v.scalar.scalar.data;
for (i = 0; i < length; ++i)
{
int c;
if (data[i] == '+')
c = ' ';
else if (data[i] == '%')
{
assert(i + 2 < length);
++i;
if (data[i] >= '0' && data[i] <= '9')
c = data[i] - '0';
else if (data[i] >= 'a' && data[i] <= 'f')
c = data[i] - 'a' + 10;
else if (data[i] >= 'A' && data[i] <= 'F')
c = data[i] - 'A' + 10;
else
assert(0);
c <<= 4;
++i;
if (data[i] >= '0' && data[i] <= '9')
c |= data[i] - '0';
else if (data[i] >= 'a' && data[i] <= 'f')
c |= data[i] - 'a' + 10;
else if (data[i] >= 'A' && data[i] <= 'F')
c |= data[i] - 'A' + 10;
else
assert(0);
}
else
c = data[i];
OUT_CHAR(ow, c);
}
}
void
registerWWWBuiltIns (void)
{
registerBuiltIn("w3urldecode", builtInUrldecode, 1, 0, 0);
}
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