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/* main.c */
/*
This program demonstrates a simple application of JSON_parser. It reads
a JSON text from STDIN, producing an error message if the text is rejected.
% JSON_parser <test/pass1.json
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include <locale.h>
#include "JSON_parser.h"
static int print(void* ctx, int type, const JSON_value* value);
int main(int argc, char* argv[]) {
int count = 0, result = 0;
FILE* input;
JSON_config config;
struct JSON_parser_struct* jc = NULL;
init_JSON_config(&config);
config.depth = 19;
config.callback = &print;
config.allow_comments = 1;
config.handle_floats_manually = 0;
/* Important! Set locale before parser is created.*/
if (argc >= 2) {
if (!setlocale(LC_ALL, argv[1])) {
fprintf(stderr, "Failed to set locale to '%s'\n", argv[1]);
}
} else {
fprintf(stderr, "No locale provided, C locale is used\n");
}
jc = new_JSON_parser(&config);
input = stdin;
for (; input ; ++count) {
int next_char = fgetc(input);
if (next_char <= 0) {
break;
}
if (!JSON_parser_char(jc, next_char)) {
fprintf(stderr, "JSON_parser_char: syntax error, byte %d\n", count);
result = 1;
goto done;
}
}
if (!JSON_parser_done(jc)) {
fprintf(stderr, "JSON_parser_end: syntax error\n");
result = 1;
goto done;
}
done:
delete_JSON_parser(jc);
return result;
}
static size_t s_Level = 0;
static const char* s_pIndention = " ";
static int s_IsKey = 0;
static void print_indention()
{
size_t i;
for (i = 0; i < s_Level; ++i) {
printf("%s", s_pIndention);
}
}
static int print(void* ctx, int type, const JSON_value* value)
{
switch(type) {
case JSON_T_ARRAY_BEGIN:
if (!s_IsKey) print_indention();
s_IsKey = 0;
printf("[\n");
++s_Level;
break;
case JSON_T_ARRAY_END:
assert(!s_IsKey);
if (s_Level > 0) --s_Level;
print_indention();
printf("]\n");
break;
case JSON_T_OBJECT_BEGIN:
if (!s_IsKey) print_indention();
s_IsKey = 0;
printf("{\n");
++s_Level;
break;
case JSON_T_OBJECT_END:
assert(!s_IsKey);
if (s_Level > 0) --s_Level;
print_indention();
printf("}\n");
break;
case JSON_T_INTEGER:
if (!s_IsKey) print_indention();
s_IsKey = 0;
printf("integer: "JSON_PARSER_INTEGER_SPRINTF_TOKEN"\n", value->vu.integer_value);
break;
case JSON_T_FLOAT:
if (!s_IsKey) print_indention();
s_IsKey = 0;
printf("float: %f\n", value->vu.float_value); /* We wanted stringified floats */
break;
case JSON_T_NULL:
if (!s_IsKey) print_indention();
s_IsKey = 0;
printf("null\n");
break;
case JSON_T_TRUE:
if (!s_IsKey) print_indention();
s_IsKey = 0;
printf("true\n");
break;
case JSON_T_FALSE:
if (!s_IsKey) print_indention();
s_IsKey = 0;
printf("false\n");
break;
case JSON_T_KEY:
s_IsKey = 1;
print_indention();
printf("key = '%s', value = ", value->vu.str.value);
break;
case JSON_T_STRING:
if (!s_IsKey) print_indention();
s_IsKey = 0;
printf("string: '%s'\n", value->vu.str.value);
break;
default:
assert(0);
break;
}
return 1;
}
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