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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 | 668e3cac | Luiz Capitulino | /*
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57 | 668e3cac | Luiz Capitulino | * IMPORTANT: This function aborts on error, thus it must not
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58 | 668e3cac | Luiz Capitulino | * be used with untrusted arguments.
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59 | 668e3cac | Luiz Capitulino | */
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60 | b4748b9b | Anthony Liguori | QObject *qobject_from_jsonf(const char *string, ...) |
61 | b4748b9b | Anthony Liguori | { |
62 | 8ff5a7d3 | Luiz Capitulino | QObject *obj; |
63 | b4748b9b | Anthony Liguori | va_list ap; |
64 | b4748b9b | Anthony Liguori | |
65 | b4748b9b | Anthony Liguori | va_start(ap, string); |
66 | 8ff5a7d3 | Luiz Capitulino | obj = qobject_from_jsonv(string, &ap); |
67 | b4748b9b | Anthony Liguori | va_end(ap); |
68 | b4748b9b | Anthony Liguori | |
69 | 668e3cac | Luiz Capitulino | assert(obj != NULL);
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70 | 8ff5a7d3 | Luiz Capitulino | return obj;
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71 | b4748b9b | Anthony Liguori | } |
72 | 1fd825f7 | Anthony Liguori | |
73 | 1fd825f7 | Anthony Liguori | typedef struct ToJsonIterState |
74 | 1fd825f7 | Anthony Liguori | { |
75 | 212b6008 | Daniel P. Berrange | int indent;
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76 | 212b6008 | Daniel P. Berrange | int pretty;
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77 | 1fd825f7 | Anthony Liguori | int count;
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78 | 1fd825f7 | Anthony Liguori | QString *str; |
79 | 1fd825f7 | Anthony Liguori | } ToJsonIterState; |
80 | 1fd825f7 | Anthony Liguori | |
81 | 212b6008 | Daniel P. Berrange | static void to_json(const QObject *obj, QString *str, int pretty, int indent); |
82 | 1fd825f7 | Anthony Liguori | |
83 | 1fd825f7 | Anthony Liguori | static void to_json_dict_iter(const char *key, QObject *obj, void *opaque) |
84 | 1fd825f7 | Anthony Liguori | { |
85 | 1fd825f7 | Anthony Liguori | ToJsonIterState *s = opaque; |
86 | 1fd825f7 | Anthony Liguori | QString *qkey; |
87 | 212b6008 | Daniel P. Berrange | int j;
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88 | 1fd825f7 | Anthony Liguori | |
89 | 212b6008 | Daniel P. Berrange | if (s->count)
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90 | 1fd825f7 | Anthony Liguori | qstring_append(s->str, ", ");
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91 | 212b6008 | Daniel P. Berrange | |
92 | 212b6008 | Daniel P. Berrange | if (s->pretty) {
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93 | 212b6008 | Daniel P. Berrange | qstring_append(s->str, "\n");
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94 | 212b6008 | Daniel P. Berrange | for (j = 0 ; j < s->indent ; j++) |
95 | 212b6008 | Daniel P. Berrange | qstring_append(s->str, " ");
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96 | 1fd825f7 | Anthony Liguori | } |
97 | 1fd825f7 | Anthony Liguori | |
98 | 1fd825f7 | Anthony Liguori | qkey = qstring_from_str(key); |
99 | 212b6008 | Daniel P. Berrange | to_json(QOBJECT(qkey), s->str, s->pretty, s->indent); |
100 | 1fd825f7 | Anthony Liguori | QDECREF(qkey); |
101 | 1fd825f7 | Anthony Liguori | |
102 | 1fd825f7 | Anthony Liguori | qstring_append(s->str, ": ");
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103 | 212b6008 | Daniel P. Berrange | to_json(obj, s->str, s->pretty, s->indent); |
104 | 1fd825f7 | Anthony Liguori | s->count++; |
105 | 1fd825f7 | Anthony Liguori | } |
106 | 1fd825f7 | Anthony Liguori | |
107 | 1fd825f7 | Anthony Liguori | static void to_json_list_iter(QObject *obj, void *opaque) |
108 | 1fd825f7 | Anthony Liguori | { |
109 | 1fd825f7 | Anthony Liguori | ToJsonIterState *s = opaque; |
110 | 212b6008 | Daniel P. Berrange | int j;
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111 | 1fd825f7 | Anthony Liguori | |
112 | 212b6008 | Daniel P. Berrange | if (s->count)
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113 | 1fd825f7 | Anthony Liguori | qstring_append(s->str, ", ");
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114 | 212b6008 | Daniel P. Berrange | |
115 | 212b6008 | Daniel P. Berrange | if (s->pretty) {
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116 | 212b6008 | Daniel P. Berrange | qstring_append(s->str, "\n");
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117 | 212b6008 | Daniel P. Berrange | for (j = 0 ; j < s->indent ; j++) |
118 | 212b6008 | Daniel P. Berrange | qstring_append(s->str, " ");
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119 | 1fd825f7 | Anthony Liguori | } |
120 | 1fd825f7 | Anthony Liguori | |
121 | 212b6008 | Daniel P. Berrange | to_json(obj, s->str, s->pretty, s->indent); |
122 | 1fd825f7 | Anthony Liguori | s->count++; |
123 | 1fd825f7 | Anthony Liguori | } |
124 | 1fd825f7 | Anthony Liguori | |
125 | 212b6008 | Daniel P. Berrange | static void to_json(const QObject *obj, QString *str, int pretty, int indent) |
126 | 1fd825f7 | Anthony Liguori | { |
127 | 1fd825f7 | Anthony Liguori | switch (qobject_type(obj)) {
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128 | 1fd825f7 | Anthony Liguori | case QTYPE_QINT: {
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129 | 1fd825f7 | Anthony Liguori | QInt *val = qobject_to_qint(obj); |
130 | 1fd825f7 | Anthony Liguori | char buffer[1024]; |
131 | 1fd825f7 | Anthony Liguori | |
132 | 1fd825f7 | Anthony Liguori | snprintf(buffer, sizeof(buffer), "%" PRId64, qint_get_int(val)); |
133 | 1fd825f7 | Anthony Liguori | qstring_append(str, buffer); |
134 | 1fd825f7 | Anthony Liguori | break;
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135 | 1fd825f7 | Anthony Liguori | } |
136 | 1fd825f7 | Anthony Liguori | case QTYPE_QSTRING: {
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137 | 1fd825f7 | Anthony Liguori | QString *val = qobject_to_qstring(obj); |
138 | 1fd825f7 | Anthony Liguori | const char *ptr; |
139 | 1fd825f7 | Anthony Liguori | |
140 | 1fd825f7 | Anthony Liguori | ptr = qstring_get_str(val); |
141 | 1fd825f7 | Anthony Liguori | qstring_append(str, "\"");
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142 | 1fd825f7 | Anthony Liguori | while (*ptr) {
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143 | 1fd825f7 | Anthony Liguori | if ((ptr[0] & 0xE0) == 0xE0 && |
144 | 1fd825f7 | Anthony Liguori | (ptr[1] & 0x80) && (ptr[2] & 0x80)) { |
145 | 1fd825f7 | Anthony Liguori | uint16_t wchar; |
146 | 1fd825f7 | Anthony Liguori | char escape[7]; |
147 | 1fd825f7 | Anthony Liguori | |
148 | 1fd825f7 | Anthony Liguori | wchar = (ptr[0] & 0x0F) << 12; |
149 | 1fd825f7 | Anthony Liguori | wchar |= (ptr[1] & 0x3F) << 6; |
150 | 1fd825f7 | Anthony Liguori | wchar |= (ptr[2] & 0x3F); |
151 | 1fd825f7 | Anthony Liguori | ptr += 2;
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152 | 1fd825f7 | Anthony Liguori | |
153 | 1fd825f7 | Anthony Liguori | snprintf(escape, sizeof(escape), "\\u%04X", wchar); |
154 | 1fd825f7 | Anthony Liguori | qstring_append(str, escape); |
155 | 1fd825f7 | Anthony Liguori | } else if ((ptr[0] & 0xE0) == 0xC0 && (ptr[1] & 0x80)) { |
156 | 1fd825f7 | Anthony Liguori | uint16_t wchar; |
157 | 1fd825f7 | Anthony Liguori | char escape[7]; |
158 | 1fd825f7 | Anthony Liguori | |
159 | 1fd825f7 | Anthony Liguori | wchar = (ptr[0] & 0x1F) << 6; |
160 | 1fd825f7 | Anthony Liguori | wchar |= (ptr[1] & 0x3F); |
161 | 1fd825f7 | Anthony Liguori | ptr++; |
162 | 1fd825f7 | Anthony Liguori | |
163 | 1fd825f7 | Anthony Liguori | snprintf(escape, sizeof(escape), "\\u%04X", wchar); |
164 | 1fd825f7 | Anthony Liguori | qstring_append(str, escape); |
165 | 1fd825f7 | Anthony Liguori | } else switch (ptr[0]) { |
166 | 1fd825f7 | Anthony Liguori | case '\"': |
167 | 1fd825f7 | Anthony Liguori | qstring_append(str, "\\\"");
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168 | 1fd825f7 | Anthony Liguori | break;
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169 | 1fd825f7 | Anthony Liguori | case '\\': |
170 | 1fd825f7 | Anthony Liguori | qstring_append(str, "\\\\");
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171 | 1fd825f7 | Anthony Liguori | break;
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172 | 1fd825f7 | Anthony Liguori | case '\b': |
173 | 1fd825f7 | Anthony Liguori | qstring_append(str, "\\b");
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174 | 1fd825f7 | Anthony Liguori | break;
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175 | bd032695 | Luiz Capitulino | case '\f': |
176 | bd032695 | Luiz Capitulino | qstring_append(str, "\\f");
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177 | bd032695 | Luiz Capitulino | break;
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178 | 1fd825f7 | Anthony Liguori | case '\n': |
179 | 1fd825f7 | Anthony Liguori | qstring_append(str, "\\n");
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180 | 1fd825f7 | Anthony Liguori | break;
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181 | 1fd825f7 | Anthony Liguori | case '\r': |
182 | 1fd825f7 | Anthony Liguori | qstring_append(str, "\\r");
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183 | 1fd825f7 | Anthony Liguori | break;
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184 | 1fd825f7 | Anthony Liguori | case '\t': |
185 | 1fd825f7 | Anthony Liguori | qstring_append(str, "\\t");
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186 | 1fd825f7 | Anthony Liguori | break;
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187 | 1fd825f7 | Anthony Liguori | default: {
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188 | ff06ea21 | Anthony Liguori | if (ptr[0] <= 0x1F) { |
189 | ff06ea21 | Anthony Liguori | char escape[7]; |
190 | ff06ea21 | Anthony Liguori | snprintf(escape, sizeof(escape), "\\u%04X", ptr[0]); |
191 | ff06ea21 | Anthony Liguori | qstring_append(str, escape); |
192 | ff06ea21 | Anthony Liguori | } else {
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193 | ff06ea21 | Anthony Liguori | char buf[2] = { ptr[0], 0 }; |
194 | ff06ea21 | Anthony Liguori | qstring_append(str, buf); |
195 | ff06ea21 | Anthony Liguori | } |
196 | 1fd825f7 | Anthony Liguori | break;
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197 | 1fd825f7 | Anthony Liguori | } |
198 | 1fd825f7 | Anthony Liguori | } |
199 | 1fd825f7 | Anthony Liguori | ptr++; |
200 | 1fd825f7 | Anthony Liguori | } |
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_QDICT: {
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205 | 1fd825f7 | Anthony Liguori | ToJsonIterState s; |
206 | 1fd825f7 | Anthony Liguori | QDict *val = qobject_to_qdict(obj); |
207 | 1fd825f7 | Anthony Liguori | |
208 | 1fd825f7 | Anthony Liguori | s.count = 0;
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209 | 1fd825f7 | Anthony Liguori | s.str = str; |
210 | 212b6008 | Daniel P. Berrange | s.indent = indent + 1;
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211 | 212b6008 | Daniel P. Berrange | s.pretty = pretty; |
212 | 1fd825f7 | Anthony Liguori | qstring_append(str, "{");
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213 | 1fd825f7 | Anthony Liguori | qdict_iter(val, to_json_dict_iter, &s); |
214 | 212b6008 | Daniel P. Berrange | if (pretty) {
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215 | 212b6008 | Daniel P. Berrange | int j;
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216 | 212b6008 | Daniel P. Berrange | qstring_append(str, "\n");
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217 | 212b6008 | Daniel P. Berrange | for (j = 0 ; j < indent ; j++) |
218 | 212b6008 | Daniel P. Berrange | qstring_append(str, " ");
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219 | 212b6008 | Daniel P. Berrange | } |
220 | 1fd825f7 | Anthony Liguori | qstring_append(str, "}");
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221 | 1fd825f7 | Anthony Liguori | break;
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222 | 1fd825f7 | Anthony Liguori | } |
223 | 1fd825f7 | Anthony Liguori | case QTYPE_QLIST: {
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224 | 1fd825f7 | Anthony Liguori | ToJsonIterState s; |
225 | 1fd825f7 | Anthony Liguori | QList *val = qobject_to_qlist(obj); |
226 | 1fd825f7 | Anthony Liguori | |
227 | 1fd825f7 | Anthony Liguori | s.count = 0;
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228 | 1fd825f7 | Anthony Liguori | s.str = str; |
229 | 212b6008 | Daniel P. Berrange | s.indent = indent + 1;
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230 | 212b6008 | Daniel P. Berrange | s.pretty = pretty; |
231 | 1fd825f7 | Anthony Liguori | qstring_append(str, "[");
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232 | 1fd825f7 | Anthony Liguori | qlist_iter(val, (void *)to_json_list_iter, &s);
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233 | 212b6008 | Daniel P. Berrange | if (pretty) {
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234 | 212b6008 | Daniel P. Berrange | int j;
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235 | 212b6008 | Daniel P. Berrange | qstring_append(str, "\n");
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236 | 212b6008 | Daniel P. Berrange | for (j = 0 ; j < indent ; j++) |
237 | 212b6008 | Daniel P. Berrange | qstring_append(str, " ");
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238 | 212b6008 | Daniel P. Berrange | } |
239 | 1fd825f7 | Anthony Liguori | qstring_append(str, "]");
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240 | 1fd825f7 | Anthony Liguori | break;
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241 | 1fd825f7 | Anthony Liguori | } |
242 | 1fd825f7 | Anthony Liguori | case QTYPE_QFLOAT: {
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243 | 1fd825f7 | Anthony Liguori | QFloat *val = qobject_to_qfloat(obj); |
244 | 1fd825f7 | Anthony Liguori | char buffer[1024]; |
245 | 1fd825f7 | Anthony Liguori | int len;
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246 | 1fd825f7 | Anthony Liguori | |
247 | 1fd825f7 | Anthony Liguori | len = snprintf(buffer, sizeof(buffer), "%f", qfloat_get_double(val)); |
248 | 1fd825f7 | Anthony Liguori | while (len > 0 && buffer[len - 1] == '0') { |
249 | 1fd825f7 | Anthony Liguori | len--; |
250 | 1fd825f7 | Anthony Liguori | } |
251 | 1fd825f7 | Anthony Liguori | |
252 | 1fd825f7 | Anthony Liguori | if (len && buffer[len - 1] == '.') { |
253 | 1fd825f7 | Anthony Liguori | buffer[len - 1] = 0; |
254 | 1fd825f7 | Anthony Liguori | } else {
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255 | 1fd825f7 | Anthony Liguori | buffer[len] = 0;
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256 | 1fd825f7 | Anthony Liguori | } |
257 | 1fd825f7 | Anthony Liguori | |
258 | 1fd825f7 | Anthony Liguori | qstring_append(str, buffer); |
259 | 1fd825f7 | Anthony Liguori | break;
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260 | 1fd825f7 | Anthony Liguori | } |
261 | 1fd825f7 | Anthony Liguori | case QTYPE_QBOOL: {
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262 | 1fd825f7 | Anthony Liguori | QBool *val = qobject_to_qbool(obj); |
263 | 1fd825f7 | Anthony Liguori | |
264 | 1fd825f7 | Anthony Liguori | if (qbool_get_int(val)) {
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265 | 1fd825f7 | Anthony Liguori | qstring_append(str, "true");
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266 | 1fd825f7 | Anthony Liguori | } else {
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267 | 1fd825f7 | Anthony Liguori | qstring_append(str, "false");
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268 | 1fd825f7 | Anthony Liguori | } |
269 | 1fd825f7 | Anthony Liguori | break;
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270 | 1fd825f7 | Anthony Liguori | } |
271 | 9f9daf9a | Luiz Capitulino | case QTYPE_QERROR:
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272 | 9f9daf9a | Luiz Capitulino | /* XXX: should QError be emitted? */
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273 | 1fd825f7 | Anthony Liguori | case QTYPE_NONE:
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274 | 1fd825f7 | Anthony Liguori | break;
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275 | 1fd825f7 | Anthony Liguori | } |
276 | 1fd825f7 | Anthony Liguori | } |
277 | 1fd825f7 | Anthony Liguori | |
278 | 1fd825f7 | Anthony Liguori | QString *qobject_to_json(const QObject *obj)
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279 | 1fd825f7 | Anthony Liguori | { |
280 | 1fd825f7 | Anthony Liguori | QString *str = qstring_new(); |
281 | 1fd825f7 | Anthony Liguori | |
282 | 212b6008 | Daniel P. Berrange | to_json(obj, str, 0, 0); |
283 | 212b6008 | Daniel P. Berrange | |
284 | 212b6008 | Daniel P. Berrange | return str;
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285 | 212b6008 | Daniel P. Berrange | } |
286 | 212b6008 | Daniel P. Berrange | |
287 | 212b6008 | Daniel P. Berrange | QString *qobject_to_json_pretty(const QObject *obj)
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288 | 212b6008 | Daniel P. Berrange | { |
289 | 212b6008 | Daniel P. Berrange | QString *str = qstring_new(); |
290 | 212b6008 | Daniel P. Berrange | |
291 | 212b6008 | Daniel P. Berrange | to_json(obj, str, 1, 0); |
292 | 1fd825f7 | Anthony Liguori | |
293 | 1fd825f7 | Anthony Liguori | return str;
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294 | 1fd825f7 | Anthony Liguori | } |