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/*
* Copyright (c) 2007-2014, Lloyd Hilaiel <me@lloyd.io>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <yajl/yajl_parse.h>
#include <yajl/yajl_gen.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
/* non-zero when we're reformatting a stream */
static int s_streamReformat = 0;
#define GEN_AND_RETURN(func) \
{ \
yajl_gen_status __stat = func; \
if (__stat == yajl_gen_generation_complete && s_streamReformat) { \
yajl_gen_reset(g, "\n"); \
__stat = func; \
} \
return __stat == yajl_gen_status_ok; }
static int reformat_null(void * ctx)
{
yajl_gen g = (yajl_gen) ctx;
GEN_AND_RETURN(yajl_gen_null(g));
}
static int reformat_boolean(void * ctx, int boolean)
{
yajl_gen g = (yajl_gen) ctx;
GEN_AND_RETURN(yajl_gen_bool(g, boolean));
}
static int reformat_number(void * ctx, const char * s, size_t l)
{
yajl_gen g = (yajl_gen) ctx;
GEN_AND_RETURN(yajl_gen_number(g, s, l));
}
static int reformat_string(void * ctx, const unsigned char * stringVal,
size_t stringLen)
{
yajl_gen g = (yajl_gen) ctx;
GEN_AND_RETURN(yajl_gen_string(g, stringVal, stringLen));
}
static int reformat_map_key(void * ctx, const unsigned char * stringVal,
size_t stringLen)
{
yajl_gen g = (yajl_gen) ctx;
GEN_AND_RETURN(yajl_gen_string(g, stringVal, stringLen));
}
static int reformat_start_map(void * ctx)
{
yajl_gen g = (yajl_gen) ctx;
GEN_AND_RETURN(yajl_gen_map_open(g));
}
static int reformat_end_map(void * ctx)
{
yajl_gen g = (yajl_gen) ctx;
GEN_AND_RETURN(yajl_gen_map_close(g));
}
static int reformat_start_array(void * ctx)
{
yajl_gen g = (yajl_gen) ctx;
GEN_AND_RETURN(yajl_gen_array_open(g));
}
static int reformat_end_array(void * ctx)
{
yajl_gen g = (yajl_gen) ctx;
GEN_AND_RETURN(yajl_gen_array_close(g));
}
static yajl_callbacks callbacks = {
reformat_null,
reformat_boolean,
NULL,
NULL,
reformat_number,
reformat_string,
reformat_start_map,
reformat_map_key,
reformat_end_map,
reformat_start_array,
reformat_end_array
};
static void
usage(const char * progname)
{
fprintf(stderr, "%s: reformat json from stdin\n"
"usage: json_reformat [options]\n"
" -e escape any forward slashes (for embedding in HTML)\n"
" -m minimize json rather than beautify (default)\n"
" -s reformat a stream of multiple json entites\n"
" -u allow invalid UTF8 inside strings during parsing\n",
progname);
exit(1);
}
int
main(int argc, char ** argv)
{
yajl_handle hand;
static unsigned char fileData[65536];
/* generator config */
yajl_gen g;
yajl_status stat;
size_t rd;
int retval = 0;
int a = 1;
g = yajl_gen_alloc(NULL);
yajl_gen_config(g, yajl_gen_beautify, 1);
yajl_gen_config(g, yajl_gen_validate_utf8, 1);
/* ok. open file. let's read and parse */
hand = yajl_alloc(&callbacks, NULL, (void *) g);
/* and let's allow comments by default */
yajl_config(hand, yajl_allow_comments, 1);
/* check arguments.*/
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 'm':
yajl_gen_config(g, yajl_gen_beautify, 0);
break;
case 's':
yajl_config(hand, yajl_allow_multiple_values, 1);
s_streamReformat = 1;
break;
case 'u':
yajl_config(hand, yajl_dont_validate_strings, 1);
break;
case 'e':
yajl_gen_config(g, yajl_gen_escape_solidus, 1);
break;
default:
fprintf(stderr, "unrecognized option: '%c'\n\n",
argv[a][i]);
usage(argv[0]);
}
}
++a;
}
if (a < argc) {
usage(argv[0]);
}
for (;;) {
rd = fread((void *) fileData, 1, sizeof(fileData) - 1, stdin);
if (rd == 0) {
if (!feof(stdin)) {
fprintf(stderr, "error on file read.\n");
retval = 1;
}
break;
}
fileData[rd] = 0;
stat = yajl_parse(hand, fileData, rd);
if (stat != yajl_status_ok) break;
{
const unsigned char * buf;
size_t len;
yajl_gen_get_buf(g, &buf, &len);
fwrite(buf, 1, len, stdout);
yajl_gen_clear(g);
}
}
stat = yajl_complete_parse(hand);
if (stat != yajl_status_ok) {
unsigned char * str = yajl_get_error(hand, 1, fileData, rd);
fprintf(stderr, "%s", (const char *) str);
yajl_free_error(hand, str);
retval = 1;
}
yajl_gen_free(g);
yajl_free(hand);
return retval;
}
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