--- /dev/null
+/*
+ * QObject JSON integration
+ *
+ * Copyright IBM, Corp. 2009
+ *
+ * Authors:
+ * Anthony Liguori <aliguori@us.ibm.com>
+ *
+ * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
+ * See the COPYING.LIB file in the top-level directory.
+ *
+ */
+
+#include "qapi/qmp/json-lexer.h"
+#include "qapi/qmp/json-parser.h"
+#include "qapi/qmp/json-streamer.h"
+#include "qapi/qmp/qjson.h"
+#include "qapi/qmp/qint.h"
+#include "qapi/qmp/qlist.h"
+#include "qapi/qmp/qbool.h"
+#include "qapi/qmp/qfloat.h"
+#include "qapi/qmp/qdict.h"
+
+typedef struct JSONParsingState
+{
+ JSONMessageParser parser;
+ va_list *ap;
+ QObject *result;
+} JSONParsingState;
+
+static void parse_json(JSONMessageParser *parser, QList *tokens)
+{
+ JSONParsingState *s = container_of(parser, JSONParsingState, parser);
+ s->result = json_parser_parse(tokens, s->ap);
+}
+
+QObject *qobject_from_jsonv(const char *string, va_list *ap)
+{
+ JSONParsingState state = {};
+
+ state.ap = ap;
+
+ json_message_parser_init(&state.parser, parse_json);
+ json_message_parser_feed(&state.parser, string, strlen(string));
+ json_message_parser_flush(&state.parser);
+ json_message_parser_destroy(&state.parser);
+
+ return state.result;
+}
+
+QObject *qobject_from_json(const char *string)
+{
+ return qobject_from_jsonv(string, NULL);
+}
+
+/*
+ * IMPORTANT: This function aborts on error, thus it must not
+ * be used with untrusted arguments.
+ */
+QObject *qobject_from_jsonf(const char *string, ...)
+{
+ QObject *obj;
+ va_list ap;
+
+ va_start(ap, string);
+ obj = qobject_from_jsonv(string, &ap);
+ va_end(ap);
+
+ assert(obj != NULL);
+ return obj;
+}
+
+typedef struct ToJsonIterState
+{
+ int indent;
+ int pretty;
+ int count;
+ QString *str;
+} ToJsonIterState;
+
+static void to_json(const QObject *obj, QString *str, int pretty, int indent);
+
+static void to_json_dict_iter(const char *key, QObject *obj, void *opaque)
+{
+ ToJsonIterState *s = opaque;
+ QString *qkey;
+ int j;
+
+ if (s->count) {
+ qstring_append(s->str, s->pretty ? "," : ", ");
+ }
+
+ if (s->pretty) {
+ qstring_append(s->str, "\n");
+ for (j = 0 ; j < s->indent ; j++)
+ qstring_append(s->str, " ");
+ }
+
+ qkey = qstring_from_str(key);
+ to_json(QOBJECT(qkey), s->str, s->pretty, s->indent);
+ QDECREF(qkey);
+
+ qstring_append(s->str, ": ");
+ to_json(obj, s->str, s->pretty, s->indent);
+ s->count++;
+}
+
+static void to_json_list_iter(QObject *obj, void *opaque)
+{
+ ToJsonIterState *s = opaque;
+ int j;
+
+ if (s->count) {
+ qstring_append(s->str, s->pretty ? "," : ", ");
+ }
+
+ if (s->pretty) {
+ qstring_append(s->str, "\n");
+ for (j = 0 ; j < s->indent ; j++)
+ qstring_append(s->str, " ");
+ }
+
+ to_json(obj, s->str, s->pretty, s->indent);
+ s->count++;
+}
+
+static void to_json(const QObject *obj, QString *str, int pretty, int indent)
+{
+ switch (qobject_type(obj)) {
+ case QTYPE_QNULL:
+ qstring_append(str, "null");
+ break;
+ case QTYPE_QINT: {
+ QInt *val = qobject_to_qint(obj);
+ char buffer[1024];
+
+ snprintf(buffer, sizeof(buffer), "%" PRId64, qint_get_int(val));
+ qstring_append(str, buffer);
+ break;
+ }
+ case QTYPE_QSTRING: {
+ QString *val = qobject_to_qstring(obj);
+ const char *ptr;
+ int cp;
+ char buf[16];
+ char *end;
+
+ ptr = qstring_get_str(val);
+ qstring_append(str, "\"");
+
+ for (; *ptr; ptr = end) {
+ cp = mod_utf8_codepoint(ptr, 6, &end);
+ switch (cp) {
+ case '\"':
+ qstring_append(str, "\\\"");
+ break;
+ case '\\':
+ qstring_append(str, "\\\\");
+ break;
+ case '\b':
+ qstring_append(str, "\\b");
+ break;
+ case '\f':
+ qstring_append(str, "\\f");
+ break;
+ case '\n':
+ qstring_append(str, "\\n");
+ break;
+ case '\r':
+ qstring_append(str, "\\r");
+ break;
+ case '\t':
+ qstring_append(str, "\\t");
+ break;
+ default:
+ if (cp < 0) {
+ cp = 0xFFFD; /* replacement character */
+ }
+ if (cp > 0xFFFF) {
+ /* beyond BMP; need a surrogate pair */
+ snprintf(buf, sizeof(buf), "\\u%04X\\u%04X",
+ 0xD800 + ((cp - 0x10000) >> 10),
+ 0xDC00 + ((cp - 0x10000) & 0x3FF));
+ } else if (cp < 0x20 || cp >= 0x7F) {
+ snprintf(buf, sizeof(buf), "\\u%04X", cp);
+ } else {
+ buf[0] = cp;
+ buf[1] = 0;
+ }
+ qstring_append(str, buf);
+ }
+ };
+
+ qstring_append(str, "\"");
+ break;
+ }
+ case QTYPE_QDICT: {
+ ToJsonIterState s;
+ QDict *val = qobject_to_qdict(obj);
+
+ s.count = 0;
+ s.str = str;
+ s.indent = indent + 1;
+ s.pretty = pretty;
+ qstring_append(str, "{");
+ qdict_iter(val, to_json_dict_iter, &s);
+ if (pretty) {
+ int j;
+ qstring_append(str, "\n");
+ for (j = 0 ; j < indent ; j++)
+ qstring_append(str, " ");
+ }
+ qstring_append(str, "}");
+ break;
+ }
+ case QTYPE_QLIST: {
+ ToJsonIterState s;
+ QList *val = qobject_to_qlist(obj);
+
+ s.count = 0;
+ s.str = str;
+ s.indent = indent + 1;
+ s.pretty = pretty;
+ qstring_append(str, "[");
+ qlist_iter(val, (void *)to_json_list_iter, &s);
+ if (pretty) {
+ int j;
+ qstring_append(str, "\n");
+ for (j = 0 ; j < indent ; j++)
+ qstring_append(str, " ");
+ }
+ qstring_append(str, "]");
+ break;
+ }
+ case QTYPE_QFLOAT: {
+ QFloat *val = qobject_to_qfloat(obj);
+ char buffer[1024];
+ int len;
+
+ len = snprintf(buffer, sizeof(buffer), "%f", qfloat_get_double(val));
+ while (len > 0 && buffer[len - 1] == '0') {
+ len--;
+ }
+
+ if (len && buffer[len - 1] == '.') {
+ buffer[len - 1] = 0;
+ } else {
+ buffer[len] = 0;
+ }
+
+ qstring_append(str, buffer);
+ break;
+ }
+ case QTYPE_QBOOL: {
+ QBool *val = qobject_to_qbool(obj);
+
+ if (qbool_get_bool(val)) {
+ qstring_append(str, "true");
+ } else {
+ qstring_append(str, "false");
+ }
+ break;
+ }
+ default:
+ abort();
+ }
+}
+
+QString *qobject_to_json(const QObject *obj)
+{
+ QString *str = qstring_new();
+
+ to_json(obj, str, 0, 0);
+
+ return str;
+}
+
+QString *qobject_to_json_pretty(const QObject *obj)
+{
+ QString *str = qstring_new();
+
+ to_json(obj, str, 1, 0);
+
+ return str;
+}
Code Review / kvmfornfv.git / blobdiff