156 lines
3.7 KiB
C
156 lines
3.7 KiB
C
/*
|
|
* This file Copyright (C) 2008 Charles Kerr <charles@rebelbase.com>
|
|
*
|
|
* This file is licensed by the GPL version 2. Works owned by the
|
|
* Transmission project are granted a special exemption to clause 2(b)
|
|
* so that the bulk of its code can remain under the MIT license.
|
|
* This exemption does not extend to derived works not owned by
|
|
* the Transmission project.
|
|
*
|
|
* $Id$
|
|
*/
|
|
|
|
#include <assert.h>
|
|
#include <ctype.h>
|
|
#include <string.h>
|
|
#include <stdio.h> /* printf */
|
|
|
|
#include <event.h> /* evbuffer */
|
|
|
|
#include "JSON_parser.h"
|
|
|
|
#include "transmission.h"
|
|
#include "bencode.h"
|
|
#include "ptrarray.h"
|
|
#include "utils.h"
|
|
|
|
struct json_benc_data
|
|
{
|
|
tr_benc * top;
|
|
tr_ptrArray * stack;
|
|
char * key;
|
|
};
|
|
|
|
static tr_benc*
|
|
getNode( struct json_benc_data * data )
|
|
{
|
|
tr_benc * parent;
|
|
tr_benc * node = NULL;
|
|
|
|
if( tr_ptrArrayEmpty( data->stack ) )
|
|
parent = NULL;
|
|
else
|
|
parent = tr_ptrArrayBack( data->stack );
|
|
|
|
if( !parent )
|
|
node = data->top;
|
|
else if( tr_bencIsList( parent ) )
|
|
node = tr_bencListAdd( parent );
|
|
else if( tr_bencIsDict( parent ) && data->key ) {
|
|
node = tr_bencDictAdd( parent, data->key );
|
|
tr_free( data->key );
|
|
data->key = NULL;
|
|
}
|
|
|
|
return node;
|
|
}
|
|
|
|
static int
|
|
callback( void * vdata, int type, const JSON_value * value )
|
|
{
|
|
struct json_benc_data * data = vdata;
|
|
tr_benc * node;
|
|
|
|
switch( type )
|
|
{
|
|
case JSON_T_ARRAY_BEGIN:
|
|
node = getNode( data );
|
|
tr_bencInitList( node, 0 );
|
|
tr_ptrArrayAppend( data->stack, node );
|
|
break;
|
|
|
|
case JSON_T_ARRAY_END:
|
|
tr_ptrArrayPop( data->stack );
|
|
break;
|
|
|
|
case JSON_T_OBJECT_BEGIN:
|
|
node = getNode( data );
|
|
tr_bencInitDict( node, 0 );
|
|
tr_ptrArrayAppend( data->stack, node );
|
|
break;
|
|
|
|
case JSON_T_OBJECT_END:
|
|
tr_ptrArrayPop( data->stack );
|
|
break;
|
|
|
|
case JSON_T_FLOAT: {
|
|
char buf[128];
|
|
tr_snprintf( buf, sizeof( buf ), "%f", (double)value->vu.float_value );
|
|
tr_bencInitStrDup( getNode( data ), buf );
|
|
break;
|
|
}
|
|
|
|
case JSON_T_NULL:
|
|
break;
|
|
|
|
case JSON_T_INTEGER:
|
|
tr_bencInitInt( getNode( data ), value->vu.integer_value );
|
|
break;
|
|
|
|
case JSON_T_TRUE:
|
|
tr_bencInitInt( getNode( data ), 1 );
|
|
break;
|
|
|
|
case JSON_T_FALSE:
|
|
tr_bencInitInt( getNode( data ), 0 );
|
|
break;
|
|
|
|
case JSON_T_STRING:
|
|
tr_bencInitStrDup( getNode( data ), value->vu.str.value );
|
|
break;
|
|
|
|
case JSON_T_KEY:
|
|
assert( !data->key );
|
|
data->key = tr_strdup( value->vu.str.value );
|
|
break;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
int
|
|
tr_jsonParse( const void * vbuf,
|
|
size_t len,
|
|
tr_benc * setme_benc,
|
|
const uint8_t ** setme_end )
|
|
{
|
|
int err = 0;
|
|
const char * buf = vbuf;
|
|
const void * bufend = buf + len;
|
|
struct JSON_config_struct config;
|
|
struct JSON_parser_struct * checker;
|
|
struct json_benc_data data;
|
|
|
|
init_JSON_config( &config );
|
|
config.callback = callback;
|
|
config.callback_ctx = &data;
|
|
config.depth = -1;
|
|
|
|
data.key = NULL;
|
|
data.top = setme_benc;
|
|
data.stack = tr_ptrArrayNew( );
|
|
|
|
checker = new_JSON_parser( &config );
|
|
while( ( buf != bufend ) && JSON_parser_char( checker, *buf ) )
|
|
++buf;
|
|
if( buf != bufend )
|
|
err = TR_ERROR;
|
|
|
|
if( setme_end )
|
|
*setme_end = (const uint8_t*) buf;
|
|
|
|
delete_JSON_parser( checker );
|
|
tr_ptrArrayFree( data.stack, NULL );
|
|
return err;
|
|
}
|