130 lines
2.6 KiB
C
130 lines
2.6 KiB
C
/*
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* QEMU JSON writer
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*
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* Copyright Alexander Graf
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*
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* Authors:
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* Alexander Graf <agraf@suse.de>
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*
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* This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
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* See the COPYING.LIB file in the top-level directory.
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*
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*/
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#include <qapi/qmp/qstring.h>
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#include <stdbool.h>
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#include <glib.h>
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#include <qjson.h>
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#include <qemu/module.h>
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#include <qom/object.h>
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struct QJSON {
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Object obj;
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QString *str;
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bool omit_comma;
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};
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#define QJSON(obj) OBJECT_CHECK(QJSON, (obj), TYPE_QJSON)
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static void json_emit_element(QJSON *json, const char *name)
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{
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/* Check whether we need to print a , before an element */
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if (json->omit_comma) {
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json->omit_comma = false;
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} else {
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qstring_append(json->str, ", ");
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}
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if (name) {
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qstring_append(json->str, "\"");
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qstring_append(json->str, name);
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qstring_append(json->str, "\" : ");
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}
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}
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void json_start_object(QJSON *json, const char *name)
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{
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json_emit_element(json, name);
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qstring_append(json->str, "{ ");
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json->omit_comma = true;
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}
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void json_end_object(QJSON *json)
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{
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qstring_append(json->str, " }");
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json->omit_comma = false;
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}
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void json_start_array(QJSON *json, const char *name)
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{
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json_emit_element(json, name);
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qstring_append(json->str, "[ ");
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json->omit_comma = true;
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}
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void json_end_array(QJSON *json)
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{
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qstring_append(json->str, " ]");
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json->omit_comma = false;
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}
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void json_prop_int(QJSON *json, const char *name, int64_t val)
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{
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json_emit_element(json, name);
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qstring_append_int(json->str, val);
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}
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void json_prop_str(QJSON *json, const char *name, const char *str)
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{
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json_emit_element(json, name);
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qstring_append_chr(json->str, '"');
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qstring_append(json->str, str);
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qstring_append_chr(json->str, '"');
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}
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const char *qjson_get_str(QJSON *json)
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{
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return qstring_get_str(json->str);
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}
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QJSON *qjson_new(void)
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{
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QJSON *json = QJSON(object_new(TYPE_QJSON));
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return json;
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}
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void qjson_finish(QJSON *json)
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{
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json_end_object(json);
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}
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static void qjson_initfn(Object *obj)
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{
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QJSON *json = QJSON(obj);
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json->str = qstring_from_str("{ ");
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json->omit_comma = true;
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}
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static void qjson_finalizefn(Object *obj)
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{
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QJSON *json = QJSON(obj);
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qobject_decref(QOBJECT(json->str));
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}
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static const TypeInfo qjson_type_info = {
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.name = TYPE_QJSON,
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.parent = TYPE_OBJECT,
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.instance_size = sizeof(QJSON),
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.instance_init = qjson_initfn,
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.instance_finalize = qjson_finalizefn,
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};
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static void qjson_register_types(void)
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{
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type_register_static(&qjson_type_info);
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}
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type_init(qjson_register_types)
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