qjsonwriter.cpp

Absolute File Name:/home/qt/qt5_coco/qt5/qtbase/src/corelib/json/qjsonwriter.cpp
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1-
2-
3-
4using namespace QJsonPrivate;-
5-
6static void objectContentToJson(const QJsonPrivate::Object *o, QByteArray &json, int indent, bool compact);-
7static void arrayContentToJson(const QJsonPrivate::Array *a, QByteArray &json, int indent, bool compact);-
8-
9static inline uchar hexdig(uint u)-
10{-
11 return (u < 0xa ? '0' + u : 'a' + u - 0xa);-
12}-
13-
14static QByteArray escapedString(const QString &s)-
15{-
16 const uchar replacement = '?';-
17 QByteArray ba(s.length(), Qt::Uninitialized);-
18-
19 uchar *cursor = reinterpret_cast<uchar *>(const_cast<char *>(ba.constData()));-
20 const uchar *ba_end = cursor + ba.length();-
21 const ushort *src = reinterpret_cast<const ushort *>(s.constBegin());-
22 const ushort *const end = reinterpret_cast<const ushort *>(s.constEnd());-
23-
24 while (src != end) {-
25 if (cursor >= ba_end - 6) {-
26-
27 int pos = cursor - (const uchar *)ba.constData();-
28 ba.resize(ba.size()*2);-
29 cursor = (uchar *)ba.data() + pos;-
30 ba_end = (const uchar *)ba.constData() + ba.length();-
31 }-
32-
33 uint u = *src++;-
34 if (u < 0x80) {-
35 if (u < 0x20 || u == 0x22 || u == 0x5c) {-
36 *cursor++ = '\\';-
37 switch (u) {-
38 case 0x22:-
39 *cursor++ = '"';-
40 break;-
41 case 0x5c:-
42 *cursor++ = '\\';-
43 break;-
44 case 0x8:-
45 *cursor++ = 'b';-
46 break;-
47 case 0xc:-
48 *cursor++ = 'f';-
49 break;-
50 case 0xa:-
51 *cursor++ = 'n';-
52 break;-
53 case 0xd:-
54 *cursor++ = 'r';-
55 break;-
56 case 0x9:-
57 *cursor++ = 't';-
58 break;-
59 default:-
60 *cursor++ = 'u';-
61 *cursor++ = '0';-
62 *cursor++ = '0';-
63 *cursor++ = hexdig(u>>4);-
64 *cursor++ = hexdig(u & 0xf);-
65 }-
66 } else {-
67 *cursor++ = (uchar)u;-
68 }-
69 } else {-
70 if (QUtf8Functions::toUtf8<QUtf8BaseTraits>(u, cursor, src, end) < 0)-
71 *cursor++ = replacement;-
72 }-
73 }-
74-
75 ba.resize(cursor - (const uchar *)ba.constData());-
76 return ba;-
77}-
78-
79static void valueToJson(const QJsonPrivate::Base *b, const QJsonPrivate::Value &v, QByteArray &json, int indent, bool compact)-
80{-
81 QJsonValue::Type type = (QJsonValue::Type)(uint)v.type;-
82 switch (type) {-
83 case
never executed: case QJsonValue::Bool:
 QJsonValue::Bool:
never executed: case QJsonValue::Bool:
0
84 json += v.toBoolean()
v.toBoolean()Description
TRUEnever evaluated
FALSEnever evaluated
 ? "true" : "false";		0
85 break;
never executed: break;
0
86 case
never executed: case QJsonValue::Double:
 QJsonValue::Double:
never executed: case QJsonValue::Double:
 {		0
87 const double d = v.toDouble(b);-
88 if (qIsFinite(d)
qIsFinite(d)Description
TRUEnever evaluated
FALSEnever evaluated
)		0
89 json += QByteArray::number(d, 'g', stdQLocale::numeric_limits<double>::digits10 + 2FloatingPointShortest);
never executed: json += QByteArray::number(d, 'g', QLocale::FloatingPointShortest);
0
90 else-
91 json += "null";
never executed: json += "null";
0
92 break;
never executed: break;
0
93 }-
94 case
never executed: case QJsonValue::String:
 QJsonValue::String:
never executed: case QJsonValue::String:
0
95 json += '"';-
96 json += escapedString(v.toString(b));-
97 json += '"';-
98 break;
never executed: break;
0
99 case
never executed: case QJsonValue::Array:
 QJsonValue::Array:
never executed: case QJsonValue::Array:
0
100 json += compact
compactDescription
TRUEnever evaluated
FALSEnever evaluated
 ? "[" : "[\n";		0
101 arrayContentToJson(static_cast<QJsonPrivate::Array *>(v.base(b)), json, indent + (compact ? 0 : 1), compact);-
102 json += QByteArray(4*indent, ' ');-
103 json += ']';-
104 break;
never executed: break;
0
105 case
never executed: case QJsonValue::Object:
 QJsonValue::Object:
never executed: case QJsonValue::Object:
0
106 json += compact
compactDescription
TRUEnever evaluated
FALSEnever evaluated
 ? "{" : "{\n";		0
107 objectContentToJson(static_cast<QJsonPrivate::Object *>(v.base(b)), json, indent + (compact ? 0 : 1), compact);-
108 json += QByteArray(4*indent, ' ');-
109 json += '}';-
110 break;
never executed: break;
0
111 case
never executed: case QJsonValue::Null:
 QJsonValue::Null:
never executed: case QJsonValue::Null:
0
112 default
never executed: default:
:
never executed: default:
0
113 json += "null";-
114 }
never executed: end of block
0
115}-
116-
117static void arrayContentToJson(const QJsonPrivate::Array *a, QByteArray &json, int indent, bool compact)-
118{-
119 if (!a || !a->length)-
120 return;-
121-
122 QByteArray indentString(4*indent, ' ');-
123-
124 uint i = 0;-
125 while (1) {-
126 json += indentString;-
127 valueToJson(a, a->at(i), json, indent, compact);-
128-
129 if (++i == a->length) {-
130 if (!compact)-
131 json += '\n';-
132 break;-
133 }-
134-
135 json += compact ? "," : ",\n";-
136 }-
137}-
138-
139-
140static void objectContentToJson(const QJsonPrivate::Object *o, QByteArray &json, int indent, bool compact)-
141{-
142 if (!o || !o->length)-
143 return;-
144-
145 QByteArray indentString(4*indent, ' ');-
146-
147 uint i = 0;-
148 while (1) {-
149 QJsonPrivate::Entry *e = o->entryAt(i);-
150 json += indentString;-
151 json += '"';-
152 json += escapedString(e->key());-
153 json += compact ? "\":" : "\": ";-
154 valueToJson(o, e->value, json, indent, compact);-
155-
156 if (++i == o->length) {-
157 if (!compact)-
158 json += '\n';-
159 break;-
160 }-
161-
162 json += compact ? "," : ",\n";-
163 }-
164}-
165-
166void Writer::objectToJson(const QJsonPrivate::Object *o, QByteArray &json, int indent, bool compact)-
167{-
168 json.reserve(json.size() + (o ? (int)o->size : 16));-
169 json += compact ? "{" : "{\n";-
170 objectContentToJson(o, json, indent + (compact ? 0 : 1), compact);-
171 json += QByteArray(4*indent, ' ');-
172 json += compact ? "}" : "}\n";-
173}-
174-
175void Writer::arrayToJson(const QJsonPrivate::Array *a, QByteArray &json, int indent, bool compact)-
176{-
177 json.reserve(json.size() + (a ? (int)a->size : 16));-
178 json += compact ? "[" : "[\n";-
179 arrayContentToJson(a, json, indent + (compact ? 0 : 1), compact);-
180 json += QByteArray(4*indent, ' ');-
181 json += compact ? "]" : "]\n";-
182}-
183-
184-
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