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/*
* JSON output formatting functions.
*
* No copyright is claimed. This code is in the public domain; do with
* it what you wish.
*
* Written by Karel Zak <kzak@redhat.com>
*/
#include <stdio.h>
#include <inttypes.h>
#include "c.h"
#include "carefulputc.h"
#include "jsonwrt.h"
void ul_jsonwrt_init(struct ul_jsonwrt *fmt, FILE *out, int indent)
{
fmt->out = out;
fmt->indent = indent;
}
void ul_jsonwrt_indent(struct ul_jsonwrt *fmt)
{
int i;
for (i = 0; i < fmt->indent; i++)
fputs(" ", fmt->out);
}
void ul_jsonwrt_open(struct ul_jsonwrt *fmt, const char *name, int type)
{
if (fmt->postponed_break && !name)
;
else {
ul_jsonwrt_indent(fmt);
if (name)
fputs_quoted_json_lower(name, fmt->out);
}
switch (type) {
case UL_JSON_OBJECT:
fputs(name ? ": {\n" : "{\n", fmt->out);
fmt->indent++;
break;
case UL_JSON_ARRAY:
fputs(name ? ": [\n" : "{\n", fmt->out);
fmt->indent++;
break;
case UL_JSON_VALUE:
fputs(name ? ": " : " ", fmt->out);
break;
}
fmt->postponed_break = 0;
}
void ul_jsonwrt_close(struct ul_jsonwrt *fmt, int type, int islast)
{
if (fmt->indent == 0) {
fputs("}\n", fmt->out);
fmt->indent--;
return;
}
assert(fmt->indent > 0);
switch (type) {
case UL_JSON_OBJECT:
fmt->indent--;
ul_jsonwrt_indent(fmt);
fputs(islast ? "}" : "},", fmt->out);
break;
case UL_JSON_ARRAY:
fmt->indent--;
ul_jsonwrt_indent(fmt);
fputs(islast ? "]" : "],", fmt->out);
break;
case UL_JSON_VALUE:
if (!islast)
fputc(',', fmt->out);
break;
}
if (!islast && (type == UL_JSON_OBJECT || type == UL_JSON_ARRAY))
fmt->postponed_break = 1;
else {
fputc('\n', fmt->out);
fmt->postponed_break = 0;
}
}
void ul_jsonwrt_value_raw(struct ul_jsonwrt *fmt,
const char *name, const char *data, int islast)
{
ul_jsonwrt_value_open(fmt, name);
if (data && *data)
fputs(data, fmt->out);
else
fputs("null", fmt->out);
ul_jsonwrt_value_close(fmt, islast);
}
void ul_jsonwrt_value_s(struct ul_jsonwrt *fmt,
const char *name, const char *data, int islast)
{
ul_jsonwrt_value_open(fmt, name);
if (data && *data)
fputs_quoted_json(data, fmt->out);
else
fputs("null", fmt->out);
ul_jsonwrt_value_close(fmt, islast);
}
void ul_jsonwrt_value_u64(struct ul_jsonwrt *fmt,
const char *name, uint64_t data, int islast)
{
ul_jsonwrt_value_open(fmt, name);
fprintf(fmt->out, "%"PRIu64, data);
ul_jsonwrt_value_close(fmt, islast);
}
void ul_jsonwrt_value_boolean(struct ul_jsonwrt *fmt,
const char *name, int data, int islast)
{
ul_jsonwrt_value_open(fmt, name);
fputs(data ? "true" : "false", fmt->out);
ul_jsonwrt_value_close(fmt, islast);
}
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