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-rw-r--r--src/corelib/serialization/qjsonwriter.cpp231
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diff --git a/src/corelib/serialization/qjsonwriter.cpp b/src/corelib/serialization/qjsonwriter.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Copyright (C) 2016 Intel Corporation.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <cmath>
+#include <qlocale.h>
+#include "qjsonwriter_p.h"
+#include "qjson_p.h"
+#include "private/qutfcodec_p.h"
+
+QT_BEGIN_NAMESPACE
+
+using namespace QJsonPrivate;
+
+static void objectContentToJson(const QJsonPrivate::Object *o, QByteArray &json, int indent, bool compact);
+static void arrayContentToJson(const QJsonPrivate::Array *a, QByteArray &json, int indent, bool compact);
+
+static inline uchar hexdig(uint u)
+{
+ return (u < 0xa ? '0' + u : 'a' + u - 0xa);
+}
+
+static QByteArray escapedString(const QString &s)
+{
+ const uchar replacement = '?';
+ QByteArray ba(s.length(), Qt::Uninitialized);
+
+ uchar *cursor = reinterpret_cast<uchar *>(const_cast<char *>(ba.constData()));
+ const uchar *ba_end = cursor + ba.length();
+ const ushort *src = reinterpret_cast<const ushort *>(s.constBegin());
+ const ushort *const end = reinterpret_cast<const ushort *>(s.constEnd());
+
+ while (src != end) {
+ if (cursor >= ba_end - 6) {
+ // ensure we have enough space
+ int pos = cursor - (const uchar *)ba.constData();
+ ba.resize(ba.size()*2);
+ cursor = (uchar *)ba.data() + pos;
+ ba_end = (const uchar *)ba.constData() + ba.length();
+ }
+
+ uint u = *src++;
+ if (u < 0x80) {
+ if (u < 0x20 || u == 0x22 || u == 0x5c) {
+ *cursor++ = '\\';
+ switch (u) {
+ case 0x22:
+ *cursor++ = '"';
+ break;
+ case 0x5c:
+ *cursor++ = '\\';
+ break;
+ case 0x8:
+ *cursor++ = 'b';
+ break;
+ case 0xc:
+ *cursor++ = 'f';
+ break;
+ case 0xa:
+ *cursor++ = 'n';
+ break;
+ case 0xd:
+ *cursor++ = 'r';
+ break;
+ case 0x9:
+ *cursor++ = 't';
+ break;
+ default:
+ *cursor++ = 'u';
+ *cursor++ = '0';
+ *cursor++ = '0';
+ *cursor++ = hexdig(u>>4);
+ *cursor++ = hexdig(u & 0xf);
+ }
+ } else {
+ *cursor++ = (uchar)u;
+ }
+ } else {
+ if (QUtf8Functions::toUtf8<QUtf8BaseTraits>(u, cursor, src, end) < 0)
+ *cursor++ = replacement;
+ }
+ }
+
+ ba.resize(cursor - (const uchar *)ba.constData());
+ return ba;
+}
+
+static void valueToJson(const QJsonPrivate::Base *b, const QJsonPrivate::Value &v, QByteArray &json, int indent, bool compact)
+{
+ QJsonValue::Type type = (QJsonValue::Type)(uint)v.type;
+ switch (type) {
+ case QJsonValue::Bool:
+ json += v.toBoolean() ? "true" : "false";
+ break;
+ case QJsonValue::Double: {
+ const double d = v.toDouble(b);
+ if (qIsFinite(d)) { // +2 to format to ensure the expected precision
+ const double abs = std::abs(d);
+ json += QByteArray::number(d, abs == static_cast<quint64>(abs) ? 'f' : 'g', QLocale::FloatingPointShortest);
+ } else {
+ json += "null"; // +INF || -INF || NaN (see RFC4627#section2.4)
+ }
+ break;
+ }
+ case QJsonValue::String:
+ json += '"';
+ json += escapedString(v.toString(b));
+ json += '"';
+ break;
+ case QJsonValue::Array:
+ json += compact ? "[" : "[\n";
+ arrayContentToJson(static_cast<QJsonPrivate::Array *>(v.base(b)), json, indent + (compact ? 0 : 1), compact);
+ json += QByteArray(4*indent, ' ');
+ json += ']';
+ break;
+ case QJsonValue::Object:
+ json += compact ? "{" : "{\n";
+ objectContentToJson(static_cast<QJsonPrivate::Object *>(v.base(b)), json, indent + (compact ? 0 : 1), compact);
+ json += QByteArray(4*indent, ' ');
+ json += '}';
+ break;
+ case QJsonValue::Null:
+ default:
+ json += "null";
+ }
+}
+
+static void arrayContentToJson(const QJsonPrivate::Array *a, QByteArray &json, int indent, bool compact)
+{
+ if (!a || !a->length)
+ return;
+
+ QByteArray indentString(4*indent, ' ');
+
+ uint i = 0;
+ while (1) {
+ json += indentString;
+ valueToJson(a, a->at(i), json, indent, compact);
+
+ if (++i == a->length) {
+ if (!compact)
+ json += '\n';
+ break;
+ }
+
+ json += compact ? "," : ",\n";
+ }
+}
+
+
+static void objectContentToJson(const QJsonPrivate::Object *o, QByteArray &json, int indent, bool compact)
+{
+ if (!o || !o->length)
+ return;
+
+ QByteArray indentString(4*indent, ' ');
+
+ uint i = 0;
+ while (1) {
+ QJsonPrivate::Entry *e = o->entryAt(i);
+ json += indentString;
+ json += '"';
+ json += escapedString(e->key());
+ json += compact ? "\":" : "\": ";
+ valueToJson(o, e->value, json, indent, compact);
+
+ if (++i == o->length) {
+ if (!compact)
+ json += '\n';
+ break;
+ }
+
+ json += compact ? "," : ",\n";
+ }
+}
+
+void Writer::objectToJson(const QJsonPrivate::Object *o, QByteArray &json, int indent, bool compact)
+{
+ json.reserve(json.size() + (o ? (int)o->size : 16));
+ json += compact ? "{" : "{\n";
+ objectContentToJson(o, json, indent + (compact ? 0 : 1), compact);
+ json += QByteArray(4*indent, ' ');
+ json += compact ? "}" : "}\n";
+}
+
+void Writer::arrayToJson(const QJsonPrivate::Array *a, QByteArray &json, int indent, bool compact)
+{
+ json.reserve(json.size() + (a ? (int)a->size : 16));
+ json += compact ? "[" : "[\n";
+ arrayContentToJson(a, json, indent + (compact ? 0 : 1), compact);
+ json += QByteArray(4*indent, ' ');
+ json += compact ? "]" : "]\n";
+}
+
+QT_END_NAMESPACE
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