2020-11-12 04:19:13 -06:00
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/*
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* JSON output formatting functions.
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*
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* No copyright is claimed. This code is in the public domain; do with
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* it what you wish.
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*
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* Written by Karel Zak <kzak@redhat.com>
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*/
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#include <stdio.h>
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#include <inttypes.h>
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#include "c.h"
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#include "carefulputc.h"
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#include "jsonwrt.h"
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void ul_jsonwrt_init(struct ul_jsonwrt *fmt, FILE *out, int indent)
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{
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fmt->out = out;
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fmt->indent = indent;
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}
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void ul_jsonwrt_indent(struct ul_jsonwrt *fmt)
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{
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int i;
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for (i = 0; i < fmt->indent; i++)
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fputs(" ", fmt->out);
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}
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void ul_jsonwrt_open(struct ul_jsonwrt *fmt, const char *name, int type)
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{
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if (fmt->postponed_break && !name)
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;
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else {
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ul_jsonwrt_indent(fmt);
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if (name)
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2020-11-12 04:38:55 -06:00
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fputs_quoted_json_lower(name, fmt->out);
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2020-11-12 04:19:13 -06:00
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}
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switch (type) {
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case UL_JSON_OBJECT:
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fputs(name ? ": {\n" : "{\n", fmt->out);
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fmt->indent++;
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break;
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case UL_JSON_ARRAY:
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fputs(name ? ": [\n" : "{\n", fmt->out);
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fmt->indent++;
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break;
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case UL_JSON_VALUE:
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fputs(name ? ": " : " ", fmt->out);
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break;
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}
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fmt->postponed_break = 0;
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}
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void ul_jsonwrt_close(struct ul_jsonwrt *fmt, int type, int islast)
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{
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if (fmt->indent == 0) {
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fputs("}\n", fmt->out);
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fmt->indent--;
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return;
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}
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assert(fmt->indent > 0);
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switch (type) {
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case UL_JSON_OBJECT:
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fmt->indent--;
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ul_jsonwrt_indent(fmt);
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fputs(islast ? "}" : "},", fmt->out);
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break;
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case UL_JSON_ARRAY:
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fmt->indent--;
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ul_jsonwrt_indent(fmt);
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fputs(islast ? "]" : "],", fmt->out);
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break;
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case UL_JSON_VALUE:
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if (!islast)
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fputc(',', fmt->out);
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break;
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}
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if (!islast && (type == UL_JSON_OBJECT || type == UL_JSON_ARRAY))
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fmt->postponed_break = 1;
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else {
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fputc('\n', fmt->out);
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fmt->postponed_break = 0;
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}
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}
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void ul_jsonwrt_value_raw(struct ul_jsonwrt *fmt,
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const char *name, const char *data, int islast)
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{
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ul_jsonwrt_value_open(fmt, name);
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if (data && *data)
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fputs(data, fmt->out);
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else
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fputs("null", fmt->out);
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ul_jsonwrt_value_close(fmt, islast);
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}
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void ul_jsonwrt_value_s(struct ul_jsonwrt *fmt,
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const char *name, const char *data, int islast)
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{
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ul_jsonwrt_value_open(fmt, name);
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if (data && *data)
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2020-11-12 04:38:55 -06:00
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fputs_quoted_json(data, fmt->out);
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2020-11-12 04:19:13 -06:00
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else
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fputs("null", fmt->out);
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ul_jsonwrt_value_close(fmt, islast);
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}
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void ul_jsonwrt_value_u64(struct ul_jsonwrt *fmt,
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const char *name, uint64_t data, int islast)
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{
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ul_jsonwrt_value_open(fmt, name);
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fprintf(fmt->out, "%"PRIu64, data);
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ul_jsonwrt_value_close(fmt, islast);
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}
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void ul_jsonwrt_value_boolean(struct ul_jsonwrt *fmt,
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const char *name, int data, int islast)
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{
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ul_jsonwrt_value_open(fmt, name);
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fputs(data ? "true" : "false", fmt->out);
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ul_jsonwrt_value_close(fmt, islast);
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}
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