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/*********************************************************************
*
* Copyright 2001 by Sean Conner. All Rights Reserved.
*
* 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.
*
* Comments, questions and criticisms can be sent to: sean@conman.org
*
*********************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <assert.h>
#include "conversion.h"
/*********************************************************************/
static ssize_t fj_write(void *cookie,char const *buffer,size_t bytes)
{
FILE *realout = cookie;
size_t size = bytes;
assert(cookie != NULL);
assert(buffer != NULL);
while(size)
{
switch(*buffer)
{
case '"' : fputc('\\',realout); fputc(*buffer,realout); break;
case '\\': fputc('\\',realout); fputc(*buffer,realout); break;
case '\b': fputc('\\',realout); fputc('b',realout); break;
case '\f': fputc('\\',realout); fputc('f',realout); break;
case '\n': fputc('\\',realout); fputc('n',realout); break;
case '\r': fputc('\\',realout); fputc('r',realout); break;
case '\t': fputc('\\',realout); fputc('t',realout); break;
default: fputc(*buffer,realout); break;
}
buffer++;
size--;
}
return bytes;
}
/*********************************************************************/
FILE *fjson_encode_onwrite(FILE *out)
{
assert(out != NULL);
return fopencookie(out,"w",(cookie_io_functions_t) {
NULL,
fj_write,
NULL,
NULL
});
}
/*********************************************************************/
static bool char_entity(char const **tag,size_t *ps,int c)
{
assert(tag != NULL);
assert(ps != NULL);
switch(c)
{
case '<': *tag = "<"; *ps = 4; return true;
case '>': *tag = ">"; *ps = 4; return true;
case '&': *tag = "&"; *ps = 5; return true;
case '"': *tag = """; *ps = 6; return true;
default: return false;
}
}
/**********************************************************************/
static ssize_t few_write(void *cookie,char const *buffer,size_t bytes)
{
FILE *realout = cookie;
size_t size = bytes;
char const *replace;
size_t repsize;
assert(buffer != NULL);
assert(cookie != NULL);
while(bytes)
{
if (char_entity(&replace,&repsize,*buffer))
fputs(replace,realout);
else
fputc(*buffer,realout);
buffer++;
bytes--;
}
return size;
}
/*******************************************************************/
FILE *fentity_encode_onwrite(FILE *out)
{
assert(out != NULL);
return fopencookie(out,"w",(cookie_io_functions_t)
{
NULL,
few_write,
NULL,
NULL
});
}
/******************************************************************/
.
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