yajl - yajl - JSON library working with the compiler. U…

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yajl - JSON library working with the compiler. URL: http://lloyd.github.com/yajl/

yajl/core/yajl.c@0:34f4a53d4ca3, 2009-11-18 (annotated)

Committer:: rolf
Date:: Wed Nov 18 17:56:51 2009 +0000
Revision:: 0:34f4a53d4ca3

Who changed what in which revision?

User	Revision	Line number	New contents of line
rolf	0:34f4a53d4ca3	1	/*
rolf	0:34f4a53d4ca3	2	* Copyright 2007-2009, Lloyd Hilaiel.
rolf	0:34f4a53d4ca3	3	*
rolf	0:34f4a53d4ca3	4	* Redistribution and use in source and binary forms, with or without
rolf	0:34f4a53d4ca3	5	* modification, are permitted provided that the following conditions are
rolf	0:34f4a53d4ca3	6	* met:
rolf	0:34f4a53d4ca3	7	*
rolf	0:34f4a53d4ca3	8	* 1. Redistributions of source code must retain the above copyright
rolf	0:34f4a53d4ca3	9	* notice, this list of conditions and the following disclaimer.
rolf	0:34f4a53d4ca3	10	*
rolf	0:34f4a53d4ca3	11	* 2. Redistributions in binary form must reproduce the above copyright
rolf	0:34f4a53d4ca3	12	* notice, this list of conditions and the following disclaimer in
rolf	0:34f4a53d4ca3	13	* the documentation and/or other materials provided with the
rolf	0:34f4a53d4ca3	14	* distribution.
rolf	0:34f4a53d4ca3	15	*
rolf	0:34f4a53d4ca3	16	* 3. Neither the name of Lloyd Hilaiel nor the names of its
rolf	0:34f4a53d4ca3	17	* contributors may be used to endorse or promote products derived
rolf	0:34f4a53d4ca3	18	* from this software without specific prior written permission.
rolf	0:34f4a53d4ca3	19	*
rolf	0:34f4a53d4ca3	20	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
rolf	0:34f4a53d4ca3	21	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
rolf	0:34f4a53d4ca3	22	* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
rolf	0:34f4a53d4ca3	23	* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
rolf	0:34f4a53d4ca3	24	* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
rolf	0:34f4a53d4ca3	25	* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
rolf	0:34f4a53d4ca3	26	* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
rolf	0:34f4a53d4ca3	27	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
rolf	0:34f4a53d4ca3	28	* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
rolf	0:34f4a53d4ca3	29	* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
rolf	0:34f4a53d4ca3	30	* POSSIBILITY OF SUCH DAMAGE.
rolf	0:34f4a53d4ca3	31	*/
rolf	0:34f4a53d4ca3	32
rolf	0:34f4a53d4ca3	33	#ifdef __cplusplus
rolf	0:34f4a53d4ca3	34	extern "C" {
rolf	0:34f4a53d4ca3	35	#endif
rolf	0:34f4a53d4ca3	36
rolf	0:34f4a53d4ca3	37	#include "yajl/yajl_parse.h"
rolf	0:34f4a53d4ca3	38	#include "yajl_lex.h"
rolf	0:34f4a53d4ca3	39	#include "yajl_parser.h"
rolf	0:34f4a53d4ca3	40	#include "yajl_alloc.h"
rolf	0:34f4a53d4ca3	41
rolf	0:34f4a53d4ca3	42	#include <stdlib.h>
rolf	0:34f4a53d4ca3	43	#include <string.h>
rolf	0:34f4a53d4ca3	44	#include <assert.h>
rolf	0:34f4a53d4ca3	45
rolf	0:34f4a53d4ca3	46	const char *
rolf	0:34f4a53d4ca3	47	yajl_status_to_string(yajl_status stat)
rolf	0:34f4a53d4ca3	48	{
rolf	0:34f4a53d4ca3	49	const char * statStr = "unknown";
rolf	0:34f4a53d4ca3	50	switch (stat) {
rolf	0:34f4a53d4ca3	51	case yajl_status_ok:
rolf	0:34f4a53d4ca3	52	statStr = "ok, no error";
rolf	0:34f4a53d4ca3	53	break;
rolf	0:34f4a53d4ca3	54	case yajl_status_client_canceled:
rolf	0:34f4a53d4ca3	55	statStr = "client canceled parse";
rolf	0:34f4a53d4ca3	56	break;
rolf	0:34f4a53d4ca3	57	case yajl_status_insufficient_data:
rolf	0:34f4a53d4ca3	58	statStr = "eof was met before the parse could complete";
rolf	0:34f4a53d4ca3	59	break;
rolf	0:34f4a53d4ca3	60	case yajl_status_error:
rolf	0:34f4a53d4ca3	61	statStr = "parse error";
rolf	0:34f4a53d4ca3	62	break;
rolf	0:34f4a53d4ca3	63	}
rolf	0:34f4a53d4ca3	64	return statStr;
rolf	0:34f4a53d4ca3	65	}
rolf	0:34f4a53d4ca3	66
rolf	0:34f4a53d4ca3	67	yajl_handle
rolf	0:34f4a53d4ca3	68	yajl_alloc(const yajl_callbacks * callbacks,
rolf	0:34f4a53d4ca3	69	const yajl_parser_config * config,
rolf	0:34f4a53d4ca3	70	const yajl_alloc_funcs * afs,
rolf	0:34f4a53d4ca3	71	void * ctx)
rolf	0:34f4a53d4ca3	72	{
rolf	0:34f4a53d4ca3	73	unsigned int allowComments = 0;
rolf	0:34f4a53d4ca3	74	unsigned int validateUTF8 = 0;
rolf	0:34f4a53d4ca3	75	yajl_handle hand = NULL;
rolf	0:34f4a53d4ca3	76	yajl_alloc_funcs afsBuffer;
rolf	0:34f4a53d4ca3	77
rolf	0:34f4a53d4ca3	78	/* first order of business is to set up memory allocation routines */
rolf	0:34f4a53d4ca3	79	if (afs != NULL) {
rolf	0:34f4a53d4ca3	80	if (afs->malloc == NULL \|\| afs->realloc == NULL \|\| afs->free == NULL)
rolf	0:34f4a53d4ca3	81	{
rolf	0:34f4a53d4ca3	82	return NULL;
rolf	0:34f4a53d4ca3	83	}
rolf	0:34f4a53d4ca3	84	} else {
rolf	0:34f4a53d4ca3	85	yajl_set_default_alloc_funcs(&afsBuffer);
rolf	0:34f4a53d4ca3	86	afs = &afsBuffer;
rolf	0:34f4a53d4ca3	87	}
rolf	0:34f4a53d4ca3	88
rolf	0:34f4a53d4ca3	89	hand = (yajl_handle) YA_MALLOC(afs, sizeof(struct yajl_handle_t));
rolf	0:34f4a53d4ca3	90
rolf	0:34f4a53d4ca3	91	/* copy in pointers to allocation routines */
rolf	0:34f4a53d4ca3	92	memcpy((void ) &(hand->alloc), (void ) afs, sizeof(yajl_alloc_funcs));
rolf	0:34f4a53d4ca3	93
rolf	0:34f4a53d4ca3	94	if (config != NULL) {
rolf	0:34f4a53d4ca3	95	allowComments = config->allowComments;
rolf	0:34f4a53d4ca3	96	validateUTF8 = config->checkUTF8;
rolf	0:34f4a53d4ca3	97	}
rolf	0:34f4a53d4ca3	98
rolf	0:34f4a53d4ca3	99	hand->callbacks = callbacks;
rolf	0:34f4a53d4ca3	100	hand->ctx = ctx;
rolf	0:34f4a53d4ca3	101	hand->lexer = yajl_lex_alloc(&(hand->alloc), allowComments, validateUTF8);
rolf	0:34f4a53d4ca3	102	hand->errorOffset = 0;
rolf	0:34f4a53d4ca3	103	hand->decodeBuf = yajl_buf_alloc(&(hand->alloc));
rolf	0:34f4a53d4ca3	104	hand->stateBuf = yajl_buf_alloc(&(hand->alloc));
rolf	0:34f4a53d4ca3	105
rolf	0:34f4a53d4ca3	106	yajl_state_push(hand, yajl_state_start);
rolf	0:34f4a53d4ca3	107
rolf	0:34f4a53d4ca3	108	return hand;
rolf	0:34f4a53d4ca3	109	}
rolf	0:34f4a53d4ca3	110
rolf	0:34f4a53d4ca3	111	void
rolf	0:34f4a53d4ca3	112	yajl_free(yajl_handle handle)
rolf	0:34f4a53d4ca3	113	{
rolf	0:34f4a53d4ca3	114	yajl_buf_free(handle->stateBuf);
rolf	0:34f4a53d4ca3	115	yajl_buf_free(handle->decodeBuf);
rolf	0:34f4a53d4ca3	116	yajl_lex_free(handle->lexer);
rolf	0:34f4a53d4ca3	117	YA_FREE(&(handle->alloc), handle);
rolf	0:34f4a53d4ca3	118	}
rolf	0:34f4a53d4ca3	119
rolf	0:34f4a53d4ca3	120	yajl_status
rolf	0:34f4a53d4ca3	121	yajl_parse(yajl_handle hand, const unsigned char * jsonText,
rolf	0:34f4a53d4ca3	122	unsigned int jsonTextLen)
rolf	0:34f4a53d4ca3	123	{
rolf	0:34f4a53d4ca3	124	unsigned int offset = 0;
rolf	0:34f4a53d4ca3	125	yajl_status status;
rolf	0:34f4a53d4ca3	126	status = yajl_do_parse(hand, &offset, jsonText, jsonTextLen);
rolf	0:34f4a53d4ca3	127	return status;
rolf	0:34f4a53d4ca3	128	}
rolf	0:34f4a53d4ca3	129
rolf	0:34f4a53d4ca3	130	yajl_status
rolf	0:34f4a53d4ca3	131	yajl_parse_complete(yajl_handle hand)
rolf	0:34f4a53d4ca3	132	{
rolf	0:34f4a53d4ca3	133	/* The particular case we want to handle is a trailing number.
rolf	0:34f4a53d4ca3	134	* Further input consisting of digits could cause our interpretation
rolf	0:34f4a53d4ca3	135	* of the number to change (buffered "1" but "2" comes in).
rolf	0:34f4a53d4ca3	136	* A very simple approach to this is to inject whitespace to terminate
rolf	0:34f4a53d4ca3	137	* any number in the lex buffer.
rolf	0:34f4a53d4ca3	138	*/
rolf	0:34f4a53d4ca3	139	return yajl_parse(hand, (const unsigned char *)" ", 1);
rolf	0:34f4a53d4ca3	140	}
rolf	0:34f4a53d4ca3	141
rolf	0:34f4a53d4ca3	142	unsigned char *
rolf	0:34f4a53d4ca3	143	yajl_get_error(yajl_handle hand, int verbose,
rolf	0:34f4a53d4ca3	144	const unsigned char * jsonText, unsigned int jsonTextLen)
rolf	0:34f4a53d4ca3	145	{
rolf	0:34f4a53d4ca3	146	return yajl_render_error_string(hand, jsonText, jsonTextLen, verbose);
rolf	0:34f4a53d4ca3	147	}
rolf	0:34f4a53d4ca3	148
rolf	0:34f4a53d4ca3	149	void
rolf	0:34f4a53d4ca3	150	yajl_free_error(yajl_handle hand, unsigned char * str)
rolf	0:34f4a53d4ca3	151	{
rolf	0:34f4a53d4ca3	152	/* use memory allocation functions if set */
rolf	0:34f4a53d4ca3	153	YA_FREE(&(hand->alloc), str);
rolf	0:34f4a53d4ca3	154	}
rolf	0:34f4a53d4ca3	155
rolf	0:34f4a53d4ca3	156	/* XXX: add utility routines to parse from file */
rolf	0:34f4a53d4ca3	157	#ifdef __cplusplus
rolf	0:34f4a53d4ca3	158	}
rolf	0:34f4a53d4ca3	159	#endif

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	18 Nov 2009
Imports:	8
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	1
Followers:	2

yajl/core/yajl.c@0:34f4a53d4ca3, 2009-11-18 (annotated)

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