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/*
* SPL - The SPL Programming Language
* Copyright (C) 2004, 2005 Clifford Wolf <clifford@clifford.at>
*
* 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
*
* mod_encode_xml.c: A simple XML encoding function
*/
/**
* A simple XML encoding function
*/
#include <stdlib.h>
#include "spl.h"
#include "compat.h"
extern void SPL_ABI(spl_mod_encode_xml_init)(struct spl_vm *vm, struct spl_module *mod, int restore);
extern void SPL_ABI(spl_mod_encode_xml_done)(struct spl_vm *vm, struct spl_module *mod);
static char *xml_encode(const char *source)
{
int source_i, target_i;
for (source_i = target_i = 0; source[source_i]; source_i++)
switch (source[source_i]) {
case '&':
/* & */
target_i += 5;
break;
case '<':
/* < */
target_i += 4;
break;
case '>':
/* > */
target_i += 4;
break;
case '"':
/* " */
target_i += 6;
break;
case '\'':
/* ' */
target_i += 6;
break;
default:
target_i++;
}
char *target = malloc(target_i+1);
for (source_i = target_i = 0; source[source_i]; source_i++)
switch (source[source_i]) {
case '&':
/* & */
target[target_i++] = '&';
target[target_i++] = 'a';
target[target_i++] = 'm';
target[target_i++] = 'p';
target[target_i++] = ';';
break;
case '<':
/* < */
target[target_i++] = '&';
target[target_i++] = 'l';
target[target_i++] = 't';
target[target_i++] = ';';
break;
case '>':
/* > */
target[target_i++] = '&';
target[target_i++] = 'g';
target[target_i++] = 't';
target[target_i++] = ';';
break;
case '"':
/* " */
target[target_i++] = '&';
target[target_i++] = 'q';
target[target_i++] = 'u';
target[target_i++] = 'o';
target[target_i++] = 't';
target[target_i++] = ';';
break;
case '\'':
/* ' */
target[target_i++] = '&';
target[target_i++] = 'a';
target[target_i++] = 'p';
target[target_i++] = 'o';
target[target_i++] = 's';
target[target_i++] = ';';
break;
default:
target[target_i++] = source[source_i];
}
target[target_i] = 0;
return target;
}
/**
* This function ecodes a text in XML. I.e. the characters &, <, >, " and '
* are translated to &, <, >, ", and '.
*
* This function is designed to be used with the encoding/quoting operator (::).
*/
// builtin encode_xml(text)
static struct spl_node *handler_encode_xml(struct spl_task *task, void *data UNUSED)
{
char *source = spl_clib_get_string(task);
return SPL_NEW_STRING(xml_encode(source));
}
void SPL_ABI(spl_mod_encode_xml_init)(struct spl_vm *vm, struct spl_module *mod UNUSED, int restore UNUSED)
{
spl_clib_reg(vm, "encode_xml", handler_encode_xml, 0);
}
void SPL_ABI(spl_mod_encode_xml_done)(struct spl_vm *vm UNUSED, struct spl_module *mod UNUSED)
{
return;
}
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