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/*
* Copyright 2007-2009, Lloyd Hilaiel.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. Neither the name of Lloyd Hilaiel nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "yajl_parse.h"
#include "yajl_lex.h"
#include "yajl_parser.h"
#include "yajl_alloc.h"
#include <stdlib.h>
#include <string.h>
#include <assert.h>
const char *
yajl_status_to_string(yajl_status stat)
{
const char * statStr = "unknown";
switch (stat) {
case yajl_status_ok:
statStr = "ok, no error";
break;
case yajl_status_client_canceled:
statStr = "client canceled parse";
break;
case yajl_status_insufficient_data:
statStr = "eof was met before the parse could complete";
break;
case yajl_status_error:
statStr = "parse error";
break;
}
return statStr;
}
yajl_handle
yajl_alloc(const yajl_callbacks * callbacks,
const yajl_parser_config * config,
const yajl_alloc_funcs * afs,
void * ctx)
{
unsigned int allowComments = 0;
unsigned int validateUTF8 = 0;
yajl_handle hand = NULL;
yajl_alloc_funcs afsBuffer;
/* first order of business is to set up memory allocation routines */
if (afs != NULL) {
if (afs->malloc == NULL || afs->realloc == NULL || afs->free == NULL)
{
return NULL;
}
} else {
yajl_set_default_alloc_funcs(&afsBuffer);
afs = &afsBuffer;
}
hand = (yajl_handle) YA_MALLOC(afs, sizeof(struct yajl_handle_t));
/* copy in pointers to allocation routines */
memcpy((void *) &(hand->alloc), (void *) afs, sizeof(yajl_alloc_funcs));
if (config != NULL) {
allowComments = config->allowComments;
validateUTF8 = config->checkUTF8;
}
hand->callbacks = callbacks;
hand->ctx = ctx;
hand->lexer = yajl_lex_alloc(&(hand->alloc), allowComments, validateUTF8);
hand->errorOffset = 0;
hand->decodeBuf = yajl_buf_alloc(&(hand->alloc));
yajl_bs_init(hand->stateStack, &(hand->alloc));
yajl_bs_push(hand->stateStack, yajl_state_start);
return hand;
}
void
yajl_free(yajl_handle handle)
{
yajl_bs_free(handle->stateStack);
yajl_buf_free(handle->decodeBuf);
yajl_lex_free(handle->lexer);
YA_FREE(&(handle->alloc), handle);
}
yajl_status
yajl_parse(yajl_handle hand, const unsigned char * jsonText,
unsigned int jsonTextLen)
{
unsigned int offset = 0;
yajl_status status;
status = yajl_do_parse(hand, &offset, jsonText, jsonTextLen);
return status;
}
yajl_status
yajl_parse_complete(yajl_handle hand)
{
/* The particular case we want to handle is a trailing number.
* Further input consisting of digits could cause our interpretation
* of the number to change (buffered "1" but "2" comes in).
* A very simple approach to this is to inject whitespace to terminate
* any number in the lex buffer.
*/
return yajl_parse(hand, (const unsigned char *)" ", 1);
}
unsigned char *
yajl_get_error(yajl_handle hand, int verbose,
const unsigned char * jsonText, unsigned int jsonTextLen)
{
return yajl_render_error_string(hand, jsonText, jsonTextLen, verbose);
}
void
yajl_free_error(yajl_handle hand, unsigned char * str)
{
/* use memory allocation functions if set */
YA_FREE(&(hand->alloc), str);
}
/* XXX: add utility routines to parse from file */
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