qjsonwriter.cpp

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1/****************************************************************************-
2**-
3** Copyright (C) 2015 The Qt Company Ltd.-
4** Copyright (C) 2013 Intel Corporation-
5** Contact: http://www.qt.io/licensing/-
6**-
7** This file is part of the QtCore module of the Qt Toolkit.-
8**-
9** $QT_BEGIN_LICENSE:LGPL21$-
10** Commercial License Usage-
11** Licensees holding valid commercial Qt licenses may use this file in-
12** accordance with the commercial license agreement provided with the-
13** Software or, alternatively, in accordance with the terms contained in-
14** a written agreement between you and The Qt Company. For licensing terms-
15** and conditions see http://www.qt.io/terms-conditions. For further-
16** information use the contact form at http://www.qt.io/contact-us.-
17**-
18** GNU Lesser General Public License Usage-
19** Alternatively, this file may be used under the terms of the GNU Lesser-
20** General Public License version 2.1 or version 3 as published by the Free-
21** Software Foundation and appearing in the file LICENSE.LGPLv21 and-
22** LICENSE.LGPLv3 included in the packaging of this file. Please review the-
23** following information to ensure the GNU Lesser General Public License-
24** requirements will be met: https://www.gnu.org/licenses/lgpl.html and-
25** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.-
26**-
27** As a special exception, The Qt Company gives you certain additional-
28** rights. These rights are described in The Qt Company LGPL Exception-
29** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.-
30**-
31** $QT_END_LICENSE$-
32**-
33****************************************************************************/-
34-
35#include "qjsonwriter_p.h"-
36#include "qjson_p.h"-
37#include "private/qutfcodec_p.h"-
38-
39QT_BEGIN_NAMESPACE-
40-
41using namespace QJsonPrivate;-
42-
43static void objectContentToJson(const QJsonPrivate::Object *o, QByteArray &json, int indent, bool compact);-
44static void arrayContentToJson(const QJsonPrivate::Array *a, QByteArray &json, int indent, bool compact);-
45-
46static inline uchar hexdig(uint u)-
47{-
48 return (u < 0xa ? '0' + u : 'a' + u - 0xa);
never executed: return (u < 0xa ? '0' + u : 'a' + u - 0xa);
u < 0xaDescription
TRUEnever evaluated
FALSEnever evaluated
0
49}-
50-
51static QByteArray escapedString(const QString &s)-
52{-
53 const uchar replacement = '?';-
54 QByteArray ba(s.length(), Qt::Uninitialized);-
55-
56 uchar *cursor = reinterpret_cast<uchar *>(const_cast<char *>(ba.constData()));-
57 const uchar *ba_end = cursor + ba.length();-
58 const ushort *src = reinterpret_cast<const ushort *>(s.constBegin());-
59 const ushort *const end = reinterpret_cast<const ushort *>(s.constEnd());-
60-
61 while (src != end) {
src != endDescription
TRUEnever evaluated
FALSEnever evaluated
0
62 if (cursor >= ba_end - 6) {
cursor >= ba_end - 6Description
TRUEnever evaluated
FALSEnever evaluated
0
63 // ensure we have enough space-
64 int pos = cursor - (const uchar *)ba.constData();-
65 ba.resize(ba.size()*2);-
66 cursor = (uchar *)ba.data() + pos;-
67 ba_end = (const uchar *)ba.constData() + ba.length();-
68 }
never executed: end of block
0
69-
70 uint u = *src++;-
71 if (u < 0x80) {
u < 0x80Description
TRUEnever evaluated
FALSEnever evaluated
0
72 if (u < 0x20 || u == 0x22 || u == 0x5c) {
u < 0x20Description
TRUEnever evaluated
FALSEnever evaluated
u == 0x22Description
TRUEnever evaluated
FALSEnever evaluated
u == 0x5cDescription
TRUEnever evaluated
FALSEnever evaluated
0
73 *cursor++ = '\\';-
74 switch (u) {-
75 case 0x22:
never executed: case 0x22:
0
76 *cursor++ = '"';-
77 break;
never executed: break;
0
78 case 0x5c:
never executed: case 0x5c:
0
79 *cursor++ = '\\';-
80 break;
never executed: break;
0
81 case 0x8:
never executed: case 0x8:
0
82 *cursor++ = 'b';-
83 break;
never executed: break;
0
84 case 0xc:
never executed: case 0xc:
0
85 *cursor++ = 'f';-
86 break;
never executed: break;
0
87 case 0xa:
never executed: case 0xa:
0
88 *cursor++ = 'n';-
89 break;
never executed: break;
0
90 case 0xd:
never executed: case 0xd:
0
91 *cursor++ = 'r';-
92 break;
never executed: break;
0
93 case 0x9:
never executed: case 0x9:
0
94 *cursor++ = 't';-
95 break;
never executed: break;
0
96 default:
never executed: default:
0
97 *cursor++ = 'u';-
98 *cursor++ = '0';-
99 *cursor++ = '0';-
100 *cursor++ = hexdig(u>>4);-
101 *cursor++ = hexdig(u & 0xf);-
102 }
never executed: end of block
0
103 } else {-
104 *cursor++ = (uchar)u;-
105 }
never executed: end of block
0
106 } else {-
107 if (QUtf8Functions::toUtf8<QUtf8BaseTraits>(u, cursor, src, end) < 0)
QUtf8Functions... src, end) < 0Description
TRUEnever evaluated
FALSEnever evaluated
0
108 *cursor++ = replacement;
never executed: *cursor++ = replacement;
0
109 }
never executed: end of block
0
110 }-
111-
112 ba.resize(cursor - (const uchar *)ba.constData());-
113 return ba;
never executed: return ba;
0
114}-
115-
116static void valueToJson(const QJsonPrivate::Base *b, const QJsonPrivate::Value &v, QByteArray &json, int indent, bool compact)-
117{-
118 QJsonValue::Type type = (QJsonValue::Type)(uint)v.type;-
119 switch (type) {-
120 case QJsonValue::Bool:
never executed: case QJsonValue::Bool:
0
121 json += v.toBoolean() ? "true" : "false";
v.toBoolean()Description
TRUEnever evaluated
FALSEnever evaluated
0
122 break;
never executed: break;
0
123 case QJsonValue::Double: {
never executed: case QJsonValue::Double:
0
124 const double d = v.toDouble(b);-
125 if (qIsFinite(d)) // +2 to format to ensure the expected precision
qIsFinite(d)Description
TRUEnever evaluated
FALSEnever evaluated
0
126 json += QByteArray::number(d, 'g', std::numeric_limits<double>::digits10 + 2); // ::digits10 is 15
never executed: json += QByteArray::number(d, 'g', std::numeric_limits<double>::digits10 + 2);
0
127 else-
128 json += "null"; // +INF || -INF || NaN (see RFC4627#section2.4)
never executed: json += "null";
0
129 break;
never executed: break;
0
130 }-
131 case QJsonValue::String:
never executed: case QJsonValue::String:
0
132 json += '"';-
133 json += escapedString(v.toString(b));-
134 json += '"';-
135 break;
never executed: break;
0
136 case QJsonValue::Array:
never executed: case QJsonValue::Array:
0
137 json += compact ? "[" : "[\n";
compactDescription
TRUEnever evaluated
FALSEnever evaluated
0
138 arrayContentToJson(static_cast<QJsonPrivate::Array *>(v.base(b)), json, indent + (compact ? 0 : 1), compact);-
139 json += QByteArray(4*indent, ' ');-
140 json += ']';-
141 break;
never executed: break;
0
142 case QJsonValue::Object:
never executed: case QJsonValue::Object:
0
143 json += compact ? "{" : "{\n";
compactDescription
TRUEnever evaluated
FALSEnever evaluated
0
144 objectContentToJson(static_cast<QJsonPrivate::Object *>(v.base(b)), json, indent + (compact ? 0 : 1), compact);-
145 json += QByteArray(4*indent, ' ');-
146 json += '}';-
147 break;
never executed: break;
0
148 case QJsonValue::Null:
never executed: case QJsonValue::Null:
0
149 default:
never executed: default:
0
150 json += "null";-
151 }
never executed: end of block
0
152}-
153-
154static void arrayContentToJson(const QJsonPrivate::Array *a, QByteArray &json, int indent, bool compact)-
155{-
156 if (!a || !a->length)
!aDescription
TRUEnever evaluated
FALSEnever evaluated
!a->lengthDescription
TRUEnever evaluated
FALSEnever evaluated
0
157 return;
never executed: return;
0
158-
159 QByteArray indentString(4*indent, ' ');-
160-
161 uint i = 0;-
162 while (1) {-
163 json += indentString;-
164 valueToJson(a, a->at(i), json, indent, compact);-
165-
166 if (++i == a->length) {
++i == a->lengthDescription
TRUEnever evaluated
FALSEnever evaluated
0
167 if (!compact)
!compactDescription
TRUEnever evaluated
FALSEnever evaluated
0
168 json += '\n';
never executed: json += '\n';
0
169 break;
never executed: break;
0
170 }-
171-
172 json += compact ? "," : ",\n";
compactDescription
TRUEnever evaluated
FALSEnever evaluated
0
173 }
never executed: end of block
0
174}
never executed: end of block
0
175-
176-
177static void objectContentToJson(const QJsonPrivate::Object *o, QByteArray &json, int indent, bool compact)-
178{-
179 if (!o || !o->length)
!oDescription
TRUEnever evaluated
FALSEnever evaluated
!o->lengthDescription
TRUEnever evaluated
FALSEnever evaluated
0
180 return;
never executed: return;
0
181-
182 QByteArray indentString(4*indent, ' ');-
183-
184 uint i = 0;-
185 while (1) {-
186 QJsonPrivate::Entry *e = o->entryAt(i);-
187 json += indentString;-
188 json += '"';-
189 json += escapedString(e->key());-
190 json += compact ? "\":" : "\": ";
compactDescription
TRUEnever evaluated
FALSEnever evaluated
0
191 valueToJson(o, e->value, json, indent, compact);-
192-
193 if (++i == o->length) {
++i == o->lengthDescription
TRUEnever evaluated
FALSEnever evaluated
0
194 if (!compact)
!compactDescription
TRUEnever evaluated
FALSEnever evaluated
0
195 json += '\n';
never executed: json += '\n';
0
196 break;
never executed: break;
0
197 }-
198-
199 json += compact ? "," : ",\n";
compactDescription
TRUEnever evaluated
FALSEnever evaluated
0
200 }
never executed: end of block
0
201}
never executed: end of block
0
202-
203void Writer::objectToJson(const QJsonPrivate::Object *o, QByteArray &json, int indent, bool compact)-
204{-
205 json.reserve(json.size() + (o ? (int)o->size : 16));-
206 json += compact ? "{" : "{\n";
compactDescription
TRUEnever evaluated
FALSEnever evaluated
0
207 objectContentToJson(o, json, indent + (compact ? 0 : 1), compact);-
208 json += QByteArray(4*indent, ' ');-
209 json += compact ? "}" : "}\n";
compactDescription
TRUEnever evaluated
FALSEnever evaluated
0
210}
never executed: end of block
0
211-
212void Writer::arrayToJson(const QJsonPrivate::Array *a, QByteArray &json, int indent, bool compact)-
213{-
214 json.reserve(json.size() + (a ? (int)a->size : 16));-
215 json += compact ? "[" : "[\n";
compactDescription
TRUEnever evaluated
FALSEnever evaluated
0
216 arrayContentToJson(a, json, indent + (compact ? 0 : 1), compact);-
217 json += QByteArray(4*indent, ' ');-
218 json += compact ? "]" : "]\n";
compactDescription
TRUEnever evaluated
FALSEnever evaluated
0
219}
never executed: end of block
0
220-
221QT_END_NAMESPACE-
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