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1 | b4748b9b | Anthony Liguori | /*
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2 | b4748b9b | Anthony Liguori | * QObject JSON integration
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3 | b4748b9b | Anthony Liguori | *
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4 | b4748b9b | Anthony Liguori | * Copyright IBM, Corp. 2009
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5 | b4748b9b | Anthony Liguori | *
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6 | b4748b9b | Anthony Liguori | * Authors:
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7 | b4748b9b | Anthony Liguori | * Anthony Liguori <aliguori@us.ibm.com>
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8 | b4748b9b | Anthony Liguori | *
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9 | b4748b9b | Anthony Liguori | * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
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10 | b4748b9b | Anthony Liguori | * See the COPYING.LIB file in the top-level directory.
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11 | b4748b9b | Anthony Liguori | *
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12 | b4748b9b | Anthony Liguori | */
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13 | b4748b9b | Anthony Liguori | |
14 | b4748b9b | Anthony Liguori | #include "json-lexer.h" |
15 | b4748b9b | Anthony Liguori | #include "json-parser.h" |
16 | b4748b9b | Anthony Liguori | #include "json-streamer.h" |
17 | b4748b9b | Anthony Liguori | #include "qjson.h" |
18 | 1fd825f7 | Anthony Liguori | #include "qint.h" |
19 | 1fd825f7 | Anthony Liguori | #include "qlist.h" |
20 | 1fd825f7 | Anthony Liguori | #include "qbool.h" |
21 | 1fd825f7 | Anthony Liguori | #include "qfloat.h" |
22 | 1fd825f7 | Anthony Liguori | #include "qdict.h" |
23 | b4748b9b | Anthony Liguori | |
24 | b4748b9b | Anthony Liguori | typedef struct JSONParsingState |
25 | b4748b9b | Anthony Liguori | { |
26 | b4748b9b | Anthony Liguori | JSONMessageParser parser; |
27 | b4748b9b | Anthony Liguori | va_list *ap; |
28 | b4748b9b | Anthony Liguori | QObject *result; |
29 | b4748b9b | Anthony Liguori | } JSONParsingState; |
30 | b4748b9b | Anthony Liguori | |
31 | b4748b9b | Anthony Liguori | static void parse_json(JSONMessageParser *parser, QList *tokens) |
32 | b4748b9b | Anthony Liguori | { |
33 | b4748b9b | Anthony Liguori | JSONParsingState *s = container_of(parser, JSONParsingState, parser); |
34 | b4748b9b | Anthony Liguori | s->result = json_parser_parse(tokens, s->ap); |
35 | b4748b9b | Anthony Liguori | } |
36 | b4748b9b | Anthony Liguori | |
37 | 8ff5a7d3 | Luiz Capitulino | QObject *qobject_from_jsonv(const char *string, va_list *ap) |
38 | b4748b9b | Anthony Liguori | { |
39 | b4748b9b | Anthony Liguori | JSONParsingState state = {}; |
40 | b4748b9b | Anthony Liguori | |
41 | 8ff5a7d3 | Luiz Capitulino | state.ap = ap; |
42 | 8ff5a7d3 | Luiz Capitulino | |
43 | b4748b9b | Anthony Liguori | json_message_parser_init(&state.parser, parse_json); |
44 | b4748b9b | Anthony Liguori | json_message_parser_feed(&state.parser, string, strlen(string)); |
45 | b4748b9b | Anthony Liguori | json_message_parser_flush(&state.parser); |
46 | b4748b9b | Anthony Liguori | json_message_parser_destroy(&state.parser); |
47 | b4748b9b | Anthony Liguori | |
48 | b4748b9b | Anthony Liguori | return state.result;
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49 | b4748b9b | Anthony Liguori | } |
50 | b4748b9b | Anthony Liguori | |
51 | 8ff5a7d3 | Luiz Capitulino | QObject *qobject_from_json(const char *string) |
52 | 8ff5a7d3 | Luiz Capitulino | { |
53 | 8ff5a7d3 | Luiz Capitulino | return qobject_from_jsonv(string, NULL); |
54 | 8ff5a7d3 | Luiz Capitulino | } |
55 | 8ff5a7d3 | Luiz Capitulino | |
56 | b4748b9b | Anthony Liguori | QObject *qobject_from_jsonf(const char *string, ...) |
57 | b4748b9b | Anthony Liguori | { |
58 | 8ff5a7d3 | Luiz Capitulino | QObject *obj; |
59 | b4748b9b | Anthony Liguori | va_list ap; |
60 | b4748b9b | Anthony Liguori | |
61 | b4748b9b | Anthony Liguori | va_start(ap, string); |
62 | 8ff5a7d3 | Luiz Capitulino | obj = qobject_from_jsonv(string, &ap); |
63 | b4748b9b | Anthony Liguori | va_end(ap); |
64 | b4748b9b | Anthony Liguori | |
65 | 8ff5a7d3 | Luiz Capitulino | return obj;
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66 | b4748b9b | Anthony Liguori | } |
67 | 1fd825f7 | Anthony Liguori | |
68 | 1fd825f7 | Anthony Liguori | typedef struct ToJsonIterState |
69 | 1fd825f7 | Anthony Liguori | { |
70 | 1fd825f7 | Anthony Liguori | int count;
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71 | 1fd825f7 | Anthony Liguori | QString *str; |
72 | 1fd825f7 | Anthony Liguori | } ToJsonIterState; |
73 | 1fd825f7 | Anthony Liguori | |
74 | 1fd825f7 | Anthony Liguori | static void to_json(const QObject *obj, QString *str); |
75 | 1fd825f7 | Anthony Liguori | |
76 | 1fd825f7 | Anthony Liguori | static void to_json_dict_iter(const char *key, QObject *obj, void *opaque) |
77 | 1fd825f7 | Anthony Liguori | { |
78 | 1fd825f7 | Anthony Liguori | ToJsonIterState *s = opaque; |
79 | 1fd825f7 | Anthony Liguori | QString *qkey; |
80 | 1fd825f7 | Anthony Liguori | |
81 | 1fd825f7 | Anthony Liguori | if (s->count) {
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82 | 1fd825f7 | Anthony Liguori | qstring_append(s->str, ", ");
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83 | 1fd825f7 | Anthony Liguori | } |
84 | 1fd825f7 | Anthony Liguori | |
85 | 1fd825f7 | Anthony Liguori | qkey = qstring_from_str(key); |
86 | 1fd825f7 | Anthony Liguori | to_json(QOBJECT(qkey), s->str); |
87 | 1fd825f7 | Anthony Liguori | QDECREF(qkey); |
88 | 1fd825f7 | Anthony Liguori | |
89 | 1fd825f7 | Anthony Liguori | qstring_append(s->str, ": ");
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90 | 1fd825f7 | Anthony Liguori | to_json(obj, s->str); |
91 | 1fd825f7 | Anthony Liguori | s->count++; |
92 | 1fd825f7 | Anthony Liguori | } |
93 | 1fd825f7 | Anthony Liguori | |
94 | 1fd825f7 | Anthony Liguori | static void to_json_list_iter(QObject *obj, void *opaque) |
95 | 1fd825f7 | Anthony Liguori | { |
96 | 1fd825f7 | Anthony Liguori | ToJsonIterState *s = opaque; |
97 | 1fd825f7 | Anthony Liguori | |
98 | 1fd825f7 | Anthony Liguori | if (s->count) {
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99 | 1fd825f7 | Anthony Liguori | qstring_append(s->str, ", ");
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100 | 1fd825f7 | Anthony Liguori | } |
101 | 1fd825f7 | Anthony Liguori | |
102 | 1fd825f7 | Anthony Liguori | to_json(obj, s->str); |
103 | 1fd825f7 | Anthony Liguori | s->count++; |
104 | 1fd825f7 | Anthony Liguori | } |
105 | 1fd825f7 | Anthony Liguori | |
106 | 1fd825f7 | Anthony Liguori | static void to_json(const QObject *obj, QString *str) |
107 | 1fd825f7 | Anthony Liguori | { |
108 | 1fd825f7 | Anthony Liguori | switch (qobject_type(obj)) {
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109 | 1fd825f7 | Anthony Liguori | case QTYPE_QINT: {
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110 | 1fd825f7 | Anthony Liguori | QInt *val = qobject_to_qint(obj); |
111 | 1fd825f7 | Anthony Liguori | char buffer[1024]; |
112 | 1fd825f7 | Anthony Liguori | |
113 | 1fd825f7 | Anthony Liguori | snprintf(buffer, sizeof(buffer), "%" PRId64, qint_get_int(val)); |
114 | 1fd825f7 | Anthony Liguori | qstring_append(str, buffer); |
115 | 1fd825f7 | Anthony Liguori | break;
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116 | 1fd825f7 | Anthony Liguori | } |
117 | 1fd825f7 | Anthony Liguori | case QTYPE_QSTRING: {
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118 | 1fd825f7 | Anthony Liguori | QString *val = qobject_to_qstring(obj); |
119 | 1fd825f7 | Anthony Liguori | const char *ptr; |
120 | 1fd825f7 | Anthony Liguori | |
121 | 1fd825f7 | Anthony Liguori | ptr = qstring_get_str(val); |
122 | 1fd825f7 | Anthony Liguori | qstring_append(str, "\"");
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123 | 1fd825f7 | Anthony Liguori | while (*ptr) {
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124 | 1fd825f7 | Anthony Liguori | if ((ptr[0] & 0xE0) == 0xE0 && |
125 | 1fd825f7 | Anthony Liguori | (ptr[1] & 0x80) && (ptr[2] & 0x80)) { |
126 | 1fd825f7 | Anthony Liguori | uint16_t wchar; |
127 | 1fd825f7 | Anthony Liguori | char escape[7]; |
128 | 1fd825f7 | Anthony Liguori | |
129 | 1fd825f7 | Anthony Liguori | wchar = (ptr[0] & 0x0F) << 12; |
130 | 1fd825f7 | Anthony Liguori | wchar |= (ptr[1] & 0x3F) << 6; |
131 | 1fd825f7 | Anthony Liguori | wchar |= (ptr[2] & 0x3F); |
132 | 1fd825f7 | Anthony Liguori | ptr += 2;
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133 | 1fd825f7 | Anthony Liguori | |
134 | 1fd825f7 | Anthony Liguori | snprintf(escape, sizeof(escape), "\\u%04X", wchar); |
135 | 1fd825f7 | Anthony Liguori | qstring_append(str, escape); |
136 | 1fd825f7 | Anthony Liguori | } else if ((ptr[0] & 0xE0) == 0xC0 && (ptr[1] & 0x80)) { |
137 | 1fd825f7 | Anthony Liguori | uint16_t wchar; |
138 | 1fd825f7 | Anthony Liguori | char escape[7]; |
139 | 1fd825f7 | Anthony Liguori | |
140 | 1fd825f7 | Anthony Liguori | wchar = (ptr[0] & 0x1F) << 6; |
141 | 1fd825f7 | Anthony Liguori | wchar |= (ptr[1] & 0x3F); |
142 | 1fd825f7 | Anthony Liguori | ptr++; |
143 | 1fd825f7 | Anthony Liguori | |
144 | 1fd825f7 | Anthony Liguori | snprintf(escape, sizeof(escape), "\\u%04X", wchar); |
145 | 1fd825f7 | Anthony Liguori | qstring_append(str, escape); |
146 | 1fd825f7 | Anthony Liguori | } else switch (ptr[0]) { |
147 | 1fd825f7 | Anthony Liguori | case '\"': |
148 | 1fd825f7 | Anthony Liguori | qstring_append(str, "\\\"");
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149 | 1fd825f7 | Anthony Liguori | break;
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150 | 1fd825f7 | Anthony Liguori | case '\\': |
151 | 1fd825f7 | Anthony Liguori | qstring_append(str, "\\\\");
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152 | 1fd825f7 | Anthony Liguori | break;
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153 | 1fd825f7 | Anthony Liguori | case '\b': |
154 | 1fd825f7 | Anthony Liguori | qstring_append(str, "\\b");
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155 | 1fd825f7 | Anthony Liguori | break;
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156 | 1fd825f7 | Anthony Liguori | case '\n': |
157 | 1fd825f7 | Anthony Liguori | qstring_append(str, "\\n");
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158 | 1fd825f7 | Anthony Liguori | break;
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159 | 1fd825f7 | Anthony Liguori | case '\r': |
160 | 1fd825f7 | Anthony Liguori | qstring_append(str, "\\r");
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161 | 1fd825f7 | Anthony Liguori | break;
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162 | 1fd825f7 | Anthony Liguori | case '\t': |
163 | 1fd825f7 | Anthony Liguori | qstring_append(str, "\\t");
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164 | 1fd825f7 | Anthony Liguori | break;
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165 | 1fd825f7 | Anthony Liguori | default: {
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166 | ff06ea21 | Anthony Liguori | if (ptr[0] <= 0x1F) { |
167 | ff06ea21 | Anthony Liguori | char escape[7]; |
168 | ff06ea21 | Anthony Liguori | snprintf(escape, sizeof(escape), "\\u%04X", ptr[0]); |
169 | ff06ea21 | Anthony Liguori | qstring_append(str, escape); |
170 | ff06ea21 | Anthony Liguori | } else {
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171 | ff06ea21 | Anthony Liguori | char buf[2] = { ptr[0], 0 }; |
172 | ff06ea21 | Anthony Liguori | qstring_append(str, buf); |
173 | ff06ea21 | Anthony Liguori | } |
174 | 1fd825f7 | Anthony Liguori | break;
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175 | 1fd825f7 | Anthony Liguori | } |
176 | 1fd825f7 | Anthony Liguori | } |
177 | 1fd825f7 | Anthony Liguori | ptr++; |
178 | 1fd825f7 | Anthony Liguori | } |
179 | 1fd825f7 | Anthony Liguori | qstring_append(str, "\"");
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180 | 1fd825f7 | Anthony Liguori | break;
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181 | 1fd825f7 | Anthony Liguori | } |
182 | 1fd825f7 | Anthony Liguori | case QTYPE_QDICT: {
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183 | 1fd825f7 | Anthony Liguori | ToJsonIterState s; |
184 | 1fd825f7 | Anthony Liguori | QDict *val = qobject_to_qdict(obj); |
185 | 1fd825f7 | Anthony Liguori | |
186 | 1fd825f7 | Anthony Liguori | s.count = 0;
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187 | 1fd825f7 | Anthony Liguori | s.str = str; |
188 | 1fd825f7 | Anthony Liguori | qstring_append(str, "{");
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189 | 1fd825f7 | Anthony Liguori | qdict_iter(val, to_json_dict_iter, &s); |
190 | 1fd825f7 | Anthony Liguori | qstring_append(str, "}");
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191 | 1fd825f7 | Anthony Liguori | break;
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192 | 1fd825f7 | Anthony Liguori | } |
193 | 1fd825f7 | Anthony Liguori | case QTYPE_QLIST: {
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194 | 1fd825f7 | Anthony Liguori | ToJsonIterState s; |
195 | 1fd825f7 | Anthony Liguori | QList *val = qobject_to_qlist(obj); |
196 | 1fd825f7 | Anthony Liguori | |
197 | 1fd825f7 | Anthony Liguori | s.count = 0;
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198 | 1fd825f7 | Anthony Liguori | s.str = str; |
199 | 1fd825f7 | Anthony Liguori | qstring_append(str, "[");
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200 | 1fd825f7 | Anthony Liguori | qlist_iter(val, (void *)to_json_list_iter, &s);
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201 | 1fd825f7 | Anthony Liguori | qstring_append(str, "]");
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202 | 1fd825f7 | Anthony Liguori | break;
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203 | 1fd825f7 | Anthony Liguori | } |
204 | 1fd825f7 | Anthony Liguori | case QTYPE_QFLOAT: {
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205 | 1fd825f7 | Anthony Liguori | QFloat *val = qobject_to_qfloat(obj); |
206 | 1fd825f7 | Anthony Liguori | char buffer[1024]; |
207 | 1fd825f7 | Anthony Liguori | int len;
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208 | 1fd825f7 | Anthony Liguori | |
209 | 1fd825f7 | Anthony Liguori | len = snprintf(buffer, sizeof(buffer), "%f", qfloat_get_double(val)); |
210 | 1fd825f7 | Anthony Liguori | while (len > 0 && buffer[len - 1] == '0') { |
211 | 1fd825f7 | Anthony Liguori | len--; |
212 | 1fd825f7 | Anthony Liguori | } |
213 | 1fd825f7 | Anthony Liguori | |
214 | 1fd825f7 | Anthony Liguori | if (len && buffer[len - 1] == '.') { |
215 | 1fd825f7 | Anthony Liguori | buffer[len - 1] = 0; |
216 | 1fd825f7 | Anthony Liguori | } else {
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217 | 1fd825f7 | Anthony Liguori | buffer[len] = 0;
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218 | 1fd825f7 | Anthony Liguori | } |
219 | 1fd825f7 | Anthony Liguori | |
220 | 1fd825f7 | Anthony Liguori | qstring_append(str, buffer); |
221 | 1fd825f7 | Anthony Liguori | break;
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222 | 1fd825f7 | Anthony Liguori | } |
223 | 1fd825f7 | Anthony Liguori | case QTYPE_QBOOL: {
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224 | 1fd825f7 | Anthony Liguori | QBool *val = qobject_to_qbool(obj); |
225 | 1fd825f7 | Anthony Liguori | |
226 | 1fd825f7 | Anthony Liguori | if (qbool_get_int(val)) {
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227 | 1fd825f7 | Anthony Liguori | qstring_append(str, "true");
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228 | 1fd825f7 | Anthony Liguori | } else {
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229 | 1fd825f7 | Anthony Liguori | qstring_append(str, "false");
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230 | 1fd825f7 | Anthony Liguori | } |
231 | 1fd825f7 | Anthony Liguori | break;
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232 | 1fd825f7 | Anthony Liguori | } |
233 | 9f9daf9a | Luiz Capitulino | case QTYPE_QERROR:
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234 | 9f9daf9a | Luiz Capitulino | /* XXX: should QError be emitted? */
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235 | 1fd825f7 | Anthony Liguori | case QTYPE_NONE:
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236 | 1fd825f7 | Anthony Liguori | break;
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237 | 1fd825f7 | Anthony Liguori | } |
238 | 1fd825f7 | Anthony Liguori | } |
239 | 1fd825f7 | Anthony Liguori | |
240 | 1fd825f7 | Anthony Liguori | QString *qobject_to_json(const QObject *obj)
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241 | 1fd825f7 | Anthony Liguori | { |
242 | 1fd825f7 | Anthony Liguori | QString *str = qstring_new(); |
243 | 1fd825f7 | Anthony Liguori | |
244 | 1fd825f7 | Anthony Liguori | to_json(obj, str); |
245 | 1fd825f7 | Anthony Liguori | |
246 | 1fd825f7 | Anthony Liguori | return str;
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247 | 1fd825f7 | Anthony Liguori | } |