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/

main.cpp@0:34f4a53d4ca3, 2009-11-18 (annotated)

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

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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	#include "mbed.h"
rolf	0:34f4a53d4ca3	34
rolf	0:34f4a53d4ca3	35	LocalFileSystem local("local");
rolf	0:34f4a53d4ca3	36
rolf	0:34f4a53d4ca3	37	#ifdef __cplusplus
rolf	0:34f4a53d4ca3	38	extern "C" {
rolf	0:34f4a53d4ca3	39	#endif
rolf	0:34f4a53d4ca3	40
rolf	0:34f4a53d4ca3	41	#include <yajl/yajl_parse.h>
rolf	0:34f4a53d4ca3	42	#include <yajl/yajl_gen.h>
rolf	0:34f4a53d4ca3	43
rolf	0:34f4a53d4ca3	44	#include <stdio.h>
rolf	0:34f4a53d4ca3	45	#include <stdlib.h>
rolf	0:34f4a53d4ca3	46	#include <string.h>
rolf	0:34f4a53d4ca3	47
rolf	0:34f4a53d4ca3	48	#include <assert.h>
rolf	0:34f4a53d4ca3	49
rolf	0:34f4a53d4ca3	50	/* memory debugging routines */
rolf	0:34f4a53d4ca3	51	typedef struct {
rolf	0:34f4a53d4ca3	52	unsigned int numFrees;
rolf	0:34f4a53d4ca3	53	unsigned int numMallocs;
rolf	0:34f4a53d4ca3	54	/* XXX: we really need a hash table here with per-allocation
rolf	0:34f4a53d4ca3	55	* information */
rolf	0:34f4a53d4ca3	56	} yajlTestMemoryContext;
rolf	0:34f4a53d4ca3	57
rolf	0:34f4a53d4ca3	58	/* cast void * into context */
rolf	0:34f4a53d4ca3	59	#define TEST_CTX(vptr) ((yajlTestMemoryContext *) (vptr))
rolf	0:34f4a53d4ca3	60
rolf	0:34f4a53d4ca3	61	static void yajlTestFree(void * ctx, void * ptr) {
rolf	0:34f4a53d4ca3	62	assert(ptr != NULL);
rolf	0:34f4a53d4ca3	63	TEST_CTX(ctx)->numFrees++;
rolf	0:34f4a53d4ca3	64	free(ptr);
rolf	0:34f4a53d4ca3	65	}
rolf	0:34f4a53d4ca3	66
rolf	0:34f4a53d4ca3	67	static void * yajlTestMalloc(void * ctx, unsigned int sz) {
rolf	0:34f4a53d4ca3	68	assert(sz != 0);
rolf	0:34f4a53d4ca3	69	TEST_CTX(ctx)->numMallocs++;
rolf	0:34f4a53d4ca3	70	return malloc(sz);
rolf	0:34f4a53d4ca3	71	}
rolf	0:34f4a53d4ca3	72
rolf	0:34f4a53d4ca3	73	static void * yajlTestRealloc(void * ctx, void * ptr, unsigned int sz) {
rolf	0:34f4a53d4ca3	74	if (ptr == NULL) {
rolf	0:34f4a53d4ca3	75	assert(sz != 0);
rolf	0:34f4a53d4ca3	76	TEST_CTX(ctx)->numMallocs++;
rolf	0:34f4a53d4ca3	77	} else if (sz == 0) {
rolf	0:34f4a53d4ca3	78	TEST_CTX(ctx)->numFrees++;
rolf	0:34f4a53d4ca3	79	}
rolf	0:34f4a53d4ca3	80
rolf	0:34f4a53d4ca3	81	return realloc(ctx, sz);
rolf	0:34f4a53d4ca3	82	}
rolf	0:34f4a53d4ca3	83
rolf	0:34f4a53d4ca3	84
rolf	0:34f4a53d4ca3	85	/* begin parsing callback routines */
rolf	0:34f4a53d4ca3	86	#define BUF_SIZE 2048
rolf	0:34f4a53d4ca3	87
rolf	0:34f4a53d4ca3	88	static int test_yajl_null(void *ctx) {
rolf	0:34f4a53d4ca3	89	printf("null\n");
rolf	0:34f4a53d4ca3	90	return 1;
rolf	0:34f4a53d4ca3	91	}
rolf	0:34f4a53d4ca3	92
rolf	0:34f4a53d4ca3	93	static int test_yajl_boolean(void * ctx, int boolVal) {
rolf	0:34f4a53d4ca3	94	printf("bool: %s\n", boolVal ? "true" : "false");
rolf	0:34f4a53d4ca3	95	return 1;
rolf	0:34f4a53d4ca3	96	}
rolf	0:34f4a53d4ca3	97
rolf	0:34f4a53d4ca3	98	static int test_yajl_integer(void *ctx, long integerVal) {
rolf	0:34f4a53d4ca3	99	printf("integer: %ld\n", integerVal);
rolf	0:34f4a53d4ca3	100	return 1;
rolf	0:34f4a53d4ca3	101	}
rolf	0:34f4a53d4ca3	102
rolf	0:34f4a53d4ca3	103	static int test_yajl_double(void *ctx, double doubleVal) {
rolf	0:34f4a53d4ca3	104	printf("double: %g\n", doubleVal);
rolf	0:34f4a53d4ca3	105	return 1;
rolf	0:34f4a53d4ca3	106	}
rolf	0:34f4a53d4ca3	107
rolf	0:34f4a53d4ca3	108	static int test_yajl_string(void ctx, const unsigned char stringVal, unsigned int stringLen) {
rolf	0:34f4a53d4ca3	109	printf("string: '");
rolf	0:34f4a53d4ca3	110	fwrite(stringVal, 1, stringLen, stdout);
rolf	0:34f4a53d4ca3	111	printf("'\n");
rolf	0:34f4a53d4ca3	112	return 1;
rolf	0:34f4a53d4ca3	113	}
rolf	0:34f4a53d4ca3	114
rolf	0:34f4a53d4ca3	115	static int test_yajl_map_key(void ctx, const unsigned char stringVal, unsigned int stringLen) {
rolf	0:34f4a53d4ca3	116	char * str = (char *) malloc(stringLen + 1);
rolf	0:34f4a53d4ca3	117	str[stringLen] = 0;
rolf	0:34f4a53d4ca3	118	memcpy(str, stringVal, stringLen);
rolf	0:34f4a53d4ca3	119	printf("key: '%s'\n", str);
rolf	0:34f4a53d4ca3	120	free(str);
rolf	0:34f4a53d4ca3	121	return 1;
rolf	0:34f4a53d4ca3	122	}
rolf	0:34f4a53d4ca3	123
rolf	0:34f4a53d4ca3	124	static int test_yajl_start_map(void *ctx) {
rolf	0:34f4a53d4ca3	125	printf("map open '{'\n");
rolf	0:34f4a53d4ca3	126	return 1;
rolf	0:34f4a53d4ca3	127	}
rolf	0:34f4a53d4ca3	128
rolf	0:34f4a53d4ca3	129
rolf	0:34f4a53d4ca3	130	static int test_yajl_end_map(void *ctx) {
rolf	0:34f4a53d4ca3	131	printf("map close '}'\n");
rolf	0:34f4a53d4ca3	132	return 1;
rolf	0:34f4a53d4ca3	133	}
rolf	0:34f4a53d4ca3	134
rolf	0:34f4a53d4ca3	135	static int test_yajl_start_array(void *ctx) {
rolf	0:34f4a53d4ca3	136	printf("array open '['\n");
rolf	0:34f4a53d4ca3	137	return 1;
rolf	0:34f4a53d4ca3	138	}
rolf	0:34f4a53d4ca3	139
rolf	0:34f4a53d4ca3	140	static int test_yajl_end_array(void *ctx) {
rolf	0:34f4a53d4ca3	141	printf("array close ']'\n");
rolf	0:34f4a53d4ca3	142	return 1;
rolf	0:34f4a53d4ca3	143	}
rolf	0:34f4a53d4ca3	144
rolf	0:34f4a53d4ca3	145	static yajl_callbacks callbacks = {
rolf	0:34f4a53d4ca3	146	test_yajl_null,
rolf	0:34f4a53d4ca3	147	test_yajl_boolean,
rolf	0:34f4a53d4ca3	148	test_yajl_integer,
rolf	0:34f4a53d4ca3	149	test_yajl_double,
rolf	0:34f4a53d4ca3	150	NULL,
rolf	0:34f4a53d4ca3	151	test_yajl_string,
rolf	0:34f4a53d4ca3	152	test_yajl_start_map,
rolf	0:34f4a53d4ca3	153	test_yajl_map_key,
rolf	0:34f4a53d4ca3	154	test_yajl_end_map,
rolf	0:34f4a53d4ca3	155	test_yajl_start_array,
rolf	0:34f4a53d4ca3	156	test_yajl_end_array
rolf	0:34f4a53d4ca3	157	};
rolf	0:34f4a53d4ca3	158
rolf	0:34f4a53d4ca3	159	static void usage(const char * progname) {
rolf	0:34f4a53d4ca3	160	fprintf(stderr,
rolf	0:34f4a53d4ca3	161	"usage: %s [options] <filename>\n"
rolf	0:34f4a53d4ca3	162	" -c allow comments\n"
rolf	0:34f4a53d4ca3	163	" -b set the read buffer size\n",
rolf	0:34f4a53d4ca3	164	progname);
rolf	0:34f4a53d4ca3	165	exit(1);
rolf	0:34f4a53d4ca3	166	}
rolf	0:34f4a53d4ca3	167
rolf	0:34f4a53d4ca3	168	#ifdef __cplusplus
rolf	0:34f4a53d4ca3	169	}
rolf	0:34f4a53d4ca3	170	#endif
rolf	0:34f4a53d4ca3	171
rolf	0:34f4a53d4ca3	172	int main() {
rolf	0:34f4a53d4ca3	173	printf("Main\n");
rolf	0:34f4a53d4ca3	174	yajl_handle hand;
rolf	0:34f4a53d4ca3	175	const char * fileName;
rolf	0:34f4a53d4ca3	176	static unsigned char * fileData = NULL;
rolf	0:34f4a53d4ca3	177	unsigned int bufSize = BUF_SIZE;
rolf	0:34f4a53d4ca3	178	yajl_status stat;
rolf	0:34f4a53d4ca3	179	size_t rd;
rolf	0:34f4a53d4ca3	180	yajl_parser_config cfg = { 0, 1 };
rolf	0:34f4a53d4ca3	181	int done;
rolf	0:34f4a53d4ca3	182
rolf	0:34f4a53d4ca3	183	/* memory allocation debugging: allocate a structure which collects
rolf	0:34f4a53d4ca3	184	* statistics */
rolf	0:34f4a53d4ca3	185	yajlTestMemoryContext memCtx = { 0,0 };
rolf	0:34f4a53d4ca3	186
rolf	0:34f4a53d4ca3	187	/* memory allocation debugging: allocate a structure which holds
rolf	0:34f4a53d4ca3	188	* allocation routines */
rolf	0:34f4a53d4ca3	189	yajl_alloc_funcs allocFuncs = {
rolf	0:34f4a53d4ca3	190	yajlTestMalloc,
rolf	0:34f4a53d4ca3	191	yajlTestRealloc,
rolf	0:34f4a53d4ca3	192	yajlTestFree,
rolf	0:34f4a53d4ca3	193	(void *) NULL
rolf	0:34f4a53d4ca3	194	};
rolf	0:34f4a53d4ca3	195
rolf	0:34f4a53d4ca3	196	allocFuncs.ctx = (void *) &memCtx;
rolf	0:34f4a53d4ca3	197
rolf	0:34f4a53d4ca3	198	/* check arguments. We expect exactly one! */
rolf	0:34f4a53d4ca3	199	cfg.allowComments = 1;
rolf	0:34f4a53d4ca3	200	bufSize = 2048;
rolf	0:34f4a53d4ca3	201
rolf	0:34f4a53d4ca3	202	fileData = new unsigned char[bufSize];
rolf	0:34f4a53d4ca3	203
rolf	0:34f4a53d4ca3	204	if (fileData == NULL) {
rolf	0:34f4a53d4ca3	205	printf("failed to allocate read buffer of %u bytes, exiting.",
rolf	0:34f4a53d4ca3	206	bufSize);
rolf	0:34f4a53d4ca3	207	exit(2);
rolf	0:34f4a53d4ca3	208	}
rolf	0:34f4a53d4ca3	209
rolf	0:34f4a53d4ca3	210	fileName = "/local/json.txt";
rolf	0:34f4a53d4ca3	211	FILE *file = fopen(fileName, "r");
rolf	0:34f4a53d4ca3	212
rolf	0:34f4a53d4ca3	213	printf("Lets start\n");
rolf	0:34f4a53d4ca3	214
rolf	0:34f4a53d4ca3	215	/* ok. open file. let's read and parse */
rolf	0:34f4a53d4ca3	216	hand = yajl_alloc(&callbacks, &cfg, &allocFuncs, NULL);
rolf	0:34f4a53d4ca3	217
rolf	0:34f4a53d4ca3	218	done = 0;
rolf	0:34f4a53d4ca3	219	printf("While loop\n");
rolf	0:34f4a53d4ca3	220	while (!done) {
rolf	0:34f4a53d4ca3	221	rd = fread((void *) fileData, 1, bufSize, file);
rolf	0:34f4a53d4ca3	222
rolf	0:34f4a53d4ca3	223	if (rd == 0) {
rolf	0:34f4a53d4ca3	224	if (!feof(file)) {
rolf	0:34f4a53d4ca3	225	fprintf(stderr, "error reading from '%s'\n", fileName);
rolf	0:34f4a53d4ca3	226	break;
rolf	0:34f4a53d4ca3	227	}
rolf	0:34f4a53d4ca3	228	done = 1;
rolf	0:34f4a53d4ca3	229	}
rolf	0:34f4a53d4ca3	230
rolf	0:34f4a53d4ca3	231	if (done) {
rolf	0:34f4a53d4ca3	232	/* parse any remaining buffered data */
rolf	0:34f4a53d4ca3	233	stat = yajl_parse_complete(hand);
rolf	0:34f4a53d4ca3	234	} else {
rolf	0:34f4a53d4ca3	235	/* read file data, pass to parser */
rolf	0:34f4a53d4ca3	236	stat = yajl_parse(hand, fileData, rd);
rolf	0:34f4a53d4ca3	237	}
rolf	0:34f4a53d4ca3	238
rolf	0:34f4a53d4ca3	239	if(stat != yajl_status_insufficient_data &&
rolf	0:34f4a53d4ca3	240	stat != yajl_status_ok) {
rolf	0:34f4a53d4ca3	241	unsigned char * str = yajl_get_error(hand, 0, fileData, rd);
rolf	0:34f4a53d4ca3	242	fflush(stdout);
rolf	0:34f4a53d4ca3	243	fprintf(stderr, (char *) str);
rolf	0:34f4a53d4ca3	244	yajl_free_error(hand, str);
rolf	0:34f4a53d4ca3	245	break;
rolf	0:34f4a53d4ca3	246	}
rolf	0:34f4a53d4ca3	247	}
rolf	0:34f4a53d4ca3	248
rolf	0:34f4a53d4ca3	249	yajl_free(hand);
rolf	0:34f4a53d4ca3	250	free(fileData);
rolf	0:34f4a53d4ca3	251
rolf	0:34f4a53d4ca3	252	/* finally, print out some memory statistics */
rolf	0:34f4a53d4ca3	253
rolf	0:34f4a53d4ca3	254	/* (lth) only print leaks here, as allocations and frees may vary depending
rolf	0:34f4a53d4ca3	255	* on read buffer size, causing false failures.
rolf	0:34f4a53d4ca3	256	*
rolf	0:34f4a53d4ca3	257	* printf("allocations:\t%u\n", memCtx.numMallocs);
rolf	0:34f4a53d4ca3	258	* printf("frees:\t\t%u\n", memCtx.numFrees);
rolf	0:34f4a53d4ca3	259	*/
rolf	0:34f4a53d4ca3	260	fflush(stderr);
rolf	0:34f4a53d4ca3	261	fflush(stdout);
rolf	0:34f4a53d4ca3	262	printf("memory leaks:\t%u\n", memCtx.numMallocs - memCtx.numFrees);
rolf	0:34f4a53d4ca3	263
rolf	0:34f4a53d4ca3	264	return 0;
rolf	0:34f4a53d4ca3	265	}

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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

main.cpp@0:34f4a53d4ca3, 2009-11-18 (annotated)

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