qjsonwriter.cpp

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1/****************************************************************************-
2**-
3** Copyright (C) 2016 The Qt Company Ltd.-
4** Copyright (C) 2016 Intel Corporation.-
5** Contact: https://www.qt.io/licensing/-
6**-
7** This file is part of the QtCore module of the Qt Toolkit.-
8**-
9** $QT_BEGIN_LICENSE:LGPL$-
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 https://www.qt.io/terms-conditions. For further-
16** information use the contact form at https://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 3 as published by the Free Software-
21** Foundation and appearing in the file LICENSE.LGPL3 included in the-
22** packaging of this file. Please review the following information to-
23** ensure the GNU Lesser General Public License version 3 requirements-
24** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.-
25**-
26** GNU General Public License Usage-
27** Alternatively, this file may be used under the terms of the GNU-
28** General Public License version 2.0 or (at your option) the GNU General-
29** Public license version 3 or any later version approved by the KDE Free-
30** Qt Foundation. The licenses are as published by the Free Software-
31** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3-
32** included in the packaging of this file. Please review the following-
33** information to ensure the GNU General Public License requirements will-
34** be met: https://www.gnu.org/licenses/gpl-2.0.html and-
35** https://www.gnu.org/licenses/gpl-3.0.html.-
36**-
37** $QT_END_LICENSE$-
38**-
39****************************************************************************/-
40-
41#include <qlocale.h>-
42#include "qjsonwriter_p.h"-
43#include "qjson_p.h"-
44#include "private/qutfcodec_p.h"-
45-
46QT_BEGIN_NAMESPACE-
47-
48using namespace QJsonPrivate;-
49-
50static void objectContentToJson(const QJsonPrivate::Object *o, QByteArray &json, int indent, bool compact);-
51static void arrayContentToJson(const QJsonPrivate::Array *a, QByteArray &json, int indent, bool compact);-
52-
53static inline uchar hexdig(uint u)-
54{-
55 return (u < 0xa ? '0' + u : 'a' + u - 0xa);
never executed: return (u < 0xa ? '0' + u : 'a' + u - 0xa);
0
56}-
57-
58static QByteArray escapedString(const QString &s)-
59{-
60 const uchar replacement = '?';-
61 QByteArray ba(s.length(), Qt::Uninitialized);-
62-
63 uchar *cursor = reinterpret_cast<uchar *>(const_cast<char *>(ba.constData()));-
64 const uchar *ba_end = cursor + ba.length();-
65 const ushort *src = reinterpret_cast<const ushort *>(s.constBegin());-
66 const ushort *const end = reinterpret_cast<const ushort *>(s.constEnd());-
67-
68 while (src != end) {
src != endDescription
TRUEnever evaluated
FALSEnever evaluated
0
69 if (cursor >= ba_end - 6) {
cursor >= ba_end - 6Description
TRUEnever evaluated
FALSEnever evaluated
0
70 // ensure we have enough space-
71 int pos = cursor - (const uchar *)ba.constData();-
72 ba.resize(ba.size()*2);-
73 cursor = (uchar *)ba.data() + pos;-
74 ba_end = (const uchar *)ba.constData() + ba.length();-
75 }
never executed: end of block
0
76-
77 uint u = *src++;-
78 if (u < 0x80) {
u < 0x80Description
TRUEnever evaluated
FALSEnever evaluated
0
79 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
80 *cursor++ = '\\';-
81 switch (u) {-
82 case 0x22:
never executed: case 0x22:
0
83 *cursor++ = '"';-
84 break;
never executed: break;
0
85 case 0x5c:
never executed: case 0x5c:
0
86 *cursor++ = '\\';-
87 break;
never executed: break;
0
88 case 0x8:
never executed: case 0x8:
0
89 *cursor++ = 'b';-
90 break;
never executed: break;
0
91 case 0xc:
never executed: case 0xc:
0
92 *cursor++ = 'f';-
93 break;
never executed: break;
0
94 case 0xa:
never executed: case 0xa:
0
95 *cursor++ = 'n';-
96 break;
never executed: break;
0
97 case 0xd:
never executed: case 0xd:
0
98 *cursor++ = 'r';-
99 break;
never executed: break;
0
100 case 0x9:
never executed: case 0x9:
0
101 *cursor++ = 't';-
102 break;
never executed: break;
0
103 default:
never executed: default:
0
104 *cursor++ = 'u';-
105 *cursor++ = '0';-
106 *cursor++ = '0';-
107 *cursor++ = hexdig(u>>4);-
108 *cursor++ = hexdig(u & 0xf);-
109 }
never executed: end of block
0
110 } else {-
111 *cursor++ = (uchar)u;-
112 }
never executed: end of block
0
113 } else {-
114 if (QUtf8Functions::toUtf8<QUtf8BaseTraits>(u, cursor, src, end) < 0)
QUtf8Functions... src, end) < 0Description
TRUEnever evaluated
FALSEnever evaluated
0
115 *cursor++ = replacement;
never executed: *cursor++ = replacement;
0
116 }
never executed: end of block
0
117 }-
118-
119 ba.resize(cursor - (const uchar *)ba.constData());-
120 return ba;
never executed: return ba;
0
121}-
122-
123static void valueToJson(const QJsonPrivate::Base *b, const QJsonPrivate::Value &v, QByteArray &json, int indent, bool compact)-
124{-
125 QJsonValue::Type type = (QJsonValue::Type)(uint)v.type;-
126 switch (type) {-
127 case QJsonValue::Bool:
never executed: case QJsonValue::Bool:
0
128 json += v.toBoolean() ? "true" : "false";
v.toBoolean()Description
TRUEnever evaluated
FALSEnever evaluated
0
129 break;
never executed: break;
0
130 case QJsonValue::Double: {
never executed: case QJsonValue::Double:
0
131 const double d = v.toDouble(b);-
132 if (qIsFinite(d)) // +2 to format to ensure the expected precision
qIsFinite(d)Description
TRUEnever evaluated
FALSEnever evaluated
0
133 json += QByteArray::number(d, 'g', QLocale::FloatingPointShortest);
never executed: json += QByteArray::number(d, 'g', QLocale::FloatingPointShortest);
0
134 else-
135 json += "null"; // +INF || -INF || NaN (see RFC4627#section2.4)
never executed: json += "null";
0
136 break;
never executed: break;
0
137 }-
138 case QJsonValue::String:
never executed: case QJsonValue::String:
0
139 json += '"';-
140 json += escapedString(v.toString(b));-
141 json += '"';-
142 break;
never executed: break;
0
143 case QJsonValue::Array:
never executed: case QJsonValue::Array:
0
144 json += compact ? "[" : "[\n";
compactDescription
TRUEnever evaluated
FALSEnever evaluated
0
145 arrayContentToJson(static_cast<QJsonPrivate::Array *>(v.base(b)), json, indent + (compact ? 0 : 1), compact);-
146 json += QByteArray(4*indent, ' ');-
147 json += ']';-
148 break;
never executed: break;
0
149 case QJsonValue::Object:
never executed: case QJsonValue::Object:
0
150 json += compact ? "{" : "{\n";
compactDescription
TRUEnever evaluated
FALSEnever evaluated
0
151 objectContentToJson(static_cast<QJsonPrivate::Object *>(v.base(b)), json, indent + (compact ? 0 : 1), compact);-
152 json += QByteArray(4*indent, ' ');-
153 json += '}';-
154 break;
never executed: break;
0
155 case QJsonValue::Null:
never executed: case QJsonValue::Null:
0
156 default:
never executed: default:
0
157 json += "null";-
158 }
never executed: end of block
0
159}-
160-
161static void arrayContentToJson(const QJsonPrivate::Array *a, QByteArray &json, int indent, bool compact)-
162{-
163 if (!a || !a->length)
!aDescription
TRUEnever evaluated
FALSEnever evaluated
!a->lengthDescription
TRUEnever evaluated
FALSEnever evaluated
0
164 return;
never executed: return;
0
165-
166 QByteArray indentString(4*indent, ' ');-
167-
168 uint i = 0;-
169 while (1) {-
170 json += indentString;-
171 valueToJson(a, a->at(i), json, indent, compact);-
172-
173 if (++i == a->length) {
++i == a->lengthDescription
TRUEnever evaluated
FALSEnever evaluated
0
174 if (!compact)
!compactDescription
TRUEnever evaluated
FALSEnever evaluated
0
175 json += '\n';
never executed: json += '\n';
0
176 break;
never executed: break;
0
177 }-
178-
179 json += compact ? "," : ",\n";
compactDescription
TRUEnever evaluated
FALSEnever evaluated
0
180 }
never executed: end of block
0
181}
never executed: end of block
0
182-
183-
184static void objectContentToJson(const QJsonPrivate::Object *o, QByteArray &json, int indent, bool compact)-
185{-
186 if (!o || !o->length)
!oDescription
TRUEnever evaluated
FALSEnever evaluated
!o->lengthDescription
TRUEnever evaluated
FALSEnever evaluated
0
187 return;
never executed: return;
0
188-
189 QByteArray indentString(4*indent, ' ');-
190-
191 uint i = 0;-
192 while (1) {-
193 QJsonPrivate::Entry *e = o->entryAt(i);-
194 json += indentString;-
195 json += '"';-
196 json += escapedString(e->key());-
197 json += compact ? "\":" : "\": ";
compactDescription
TRUEnever evaluated
FALSEnever evaluated
0
198 valueToJson(o, e->value, json, indent, compact);-
199-
200 if (++i == o->length) {
++i == o->lengthDescription
TRUEnever evaluated
FALSEnever evaluated
0
201 if (!compact)
!compactDescription
TRUEnever evaluated
FALSEnever evaluated
0
202 json += '\n';
never executed: json += '\n';
0
203 break;
never executed: break;
0
204 }-
205-
206 json += compact ? "," : ",\n";
compactDescription
TRUEnever evaluated
FALSEnever evaluated
0
207 }
never executed: end of block
0
208}
never executed: end of block
0
209-
210void Writer::objectToJson(const QJsonPrivate::Object *o, QByteArray &json, int indent, bool compact)-
211{-
212 json.reserve(json.size() + (o ? (int)o->size : 16));-
213 json += compact ? "{" : "{\n";
compactDescription
TRUEnever evaluated
FALSEnever evaluated
0
214 objectContentToJson(o, json, indent + (compact ? 0 : 1), compact);-
215 json += QByteArray(4*indent, ' ');-
216 json += compact ? "}" : "}\n";
compactDescription
TRUEnever evaluated
FALSEnever evaluated
0
217}
never executed: end of block
0
218-
219void Writer::arrayToJson(const QJsonPrivate::Array *a, QByteArray &json, int indent, bool compact)-
220{-
221 json.reserve(json.size() + (a ? (int)a->size : 16));-
222 json += compact ? "[" : "[\n";
compactDescription
TRUEnever evaluated
FALSEnever evaluated
0
223 arrayContentToJson(a, json, indent + (compact ? 0 : 1), compact);-
224 json += QByteArray(4*indent, ' ');-
225 json += compact ? "]" : "]\n";
compactDescription
TRUEnever evaluated
FALSEnever evaluated
0
226}
never executed: end of block
0
227-
228QT_END_NAMESPACE-
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