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/*
* Copyright 2010, 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/yajl_parse.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
static void
usage(const char * progname)
{
fprintf(stderr, "%s: validate json from stdin\n"
"usage: json_verify [options]\n"
" -q quiet mode\n"
" -c allow comments\n"
" -u allow invalid utf8 inside strings\n",
progname);
exit(1);
}
int
main(int argc, char ** argv)
{
yajl_status stat;
size_t rd;
yajl_handle hand;
static unsigned char fileData[65536];
int quiet = 0;
int retval = 0, done = 0;
yajl_parser_config cfg = { 0, 1 };
/* check arguments.*/
int a = 1;
while ((a < argc) && (argv[a][0] == '-') && (strlen(argv[a]) > 1)) {
unsigned int i;
for ( i=1; i < strlen(argv[a]); i++) {
switch (argv[a][i]) {
case 'q':
quiet = 1;
break;
case 'c':
cfg.allowComments = 1;
break;
case 'u':
cfg.checkUTF8 = 0;
break;
default:
fprintf(stderr, "unrecognized option: '%c'\n\n", argv[a][i]);
usage(argv[0]);
}
}
++a;
}
if (a < argc) {
usage(argv[0]);
}
/* allocate a parser */
hand = yajl_alloc(NULL, &cfg, NULL, NULL);
while (!done) {
rd = fread((void *) fileData, 1, sizeof(fileData) - 1, stdin);
retval = 0;
if (rd == 0) {
if (!feof(stdin)) {
if (!quiet) {
fprintf(stderr, "error encountered on file read\n");
}
retval = 1;
break;
}
done = 1;
}
fileData[rd] = 0;
if (done)
/* parse any remaining buffered data */
stat = yajl_parse_complete(hand);
else
/* read file data, pass to parser */
stat = yajl_parse(hand, fileData, rd);
if (stat != yajl_status_ok &&
stat != yajl_status_insufficient_data)
{
if (!quiet) {
unsigned char * str = yajl_get_error(hand, 1, fileData, rd);
fprintf(stderr, "%s", (const char *) str);
yajl_free_error(hand, str);
}
retval = 1;
break;
}
}
yajl_free(hand);
if (!quiet) {
printf("JSON is %s\n", retval ? "invalid" : "valid");
}
return retval;
}
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