Move QTextCodec support out of QtCore

* Assume UTF-8 on all Unix like systems
* Export some functions to be able to compile QTextCodec once
  moved to Qt5Compat.

Task-number: QTBUG-75665
Change-Id: I52ec47a848bc0ba72e9c7689668b1bcc5d736c29
Reviewed-by: Lars Knoll <lars.knoll@qt.io>

1 files changed, 0 insertions, 248 deletions

diff --git a/examples/widgets/tools/codecs/previewform.cpp b/examples/widgets/tools/codecs/previewform.cpp
deleted file mode 100644
index 80a99bf271..0000000000
--- a/examples/widgets/tools/codecs/previewform.cpp
+++ /dev/null
@@ -1,248 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2016 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of the examples of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:BSD$
-** 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.
-**
-** BSD License Usage
-** Alternatively, you may use this file under the terms of the BSD license
-** as follows:
-**
-** "Redistribution and use in source and binary forms, with or without
-** modification, are permitted provided that the following conditions are
-** met:
-**   * Redistributions of source code must retain the above copyright
-**     notice, this list of conditions and the following disclaimer.
-**   * Redistributions in binary form must reproduce the above copyright
-**     notice, this list of conditions and the following disclaimer in
-**     the documentation and/or other materials provided with the
-**     distribution.
-**   * Neither the name of The Qt Company Ltd nor the names of its
-**     contributors may be used to endorse or promote products derived
-**     from this software without specific prior written permission.
-**
-**
-** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include "previewform.h"
-
-#include <QApplication>
-#include <QComboBox>
-#include <QDialogButtonBox>
-#include <QGridLayout>
-#include <QLabel>
-#include <QPlainTextEdit>
-#include <QPushButton>
-#include <QScreen>
-#include <QTextCodec>
-#include <QTextStream>
-
-// Helpers for creating hex dumps
-static void indent(QTextStream &str, int indent)
-{
-    for (int i = 0; i < indent; ++i)
-        str << ' ';
-}
-
-static void formatHex(QTextStream &str, const QByteArray &data)
-{
-    const int fieldWidth = str.fieldWidth();
-    const QTextStream::FieldAlignment alignment = str.fieldAlignment();
-    const int base = str.integerBase();
-    const QChar padChar = str.padChar();
-    str.setIntegerBase(16);
-    str.setPadChar(QLatin1Char('0'));
-    str.setFieldAlignment(QTextStream::AlignRight);
-
-    const unsigned char *p = reinterpret_cast<const unsigned char *>(data.constBegin());
-    for (const unsigned char *end = p + data.size(); p < end; ++p) {
-        str << ' ';
-        str.setFieldWidth(2);
-        str << unsigned(*p);
-        str.setFieldWidth(fieldWidth);
-    }
-    str.setFieldAlignment(alignment);
-    str.setPadChar(padChar);
-    str.setIntegerBase(base);
-}
-
-static void formatPrintableCharacters(QTextStream &str, const QByteArray &data)
-{
-    for (const char c : data) {
-        switch (c) {
-        case '\0':
-            str << "\\0";
-            break;
-        case '\t':
-            str << "\\t";
-            break;
-        case '\r':
-            str << "\\r";
-            break;
-        case '\n':
-            str << "\\n";
-            break;
-        default:
-            if (c >= 32 && uchar(c) < 127)
-                str << ' ' << c;
-            else
-                str << "..";
-            break;
-        }
-    }
-}
-
-static QString formatHexDump(const QByteArray &data)
-{
-    enum { lineWidth = 16 };
-    QString result;
-    QTextStream str(&result);
-    str.setIntegerBase(16);
-    str.setPadChar(QLatin1Char('0'));
-    const int fieldWidth = str.fieldWidth();
-    const QTextStream::FieldAlignment alignment = str.fieldAlignment();
-    for (int a = 0, size = data.size(); a < size; a += lineWidth) {
-        str.setFieldAlignment(QTextStream::AlignRight);
-        str.setFieldWidth(8);
-        str << a;
-        str.setFieldWidth(fieldWidth);
-        str.setFieldAlignment(alignment);
-
-        const int end = qMin(a + lineWidth, size);
-        const QByteArray line = data.mid(a, end - a);
-
-        formatHex(str, line);
-        indent(str, 3 * (lineWidth - line.size()));
-
-        str << ' ';
-        formatPrintableCharacters(str, line);
-        indent(str, 2 * (lineWidth - line.size()));
-        str << '\n';
-    }
-    return result;
-}
-
-PreviewForm::PreviewForm(QWidget *parent)
-    : QDialog(parent)
-{
-    setWindowFlags(windowFlags() & ~Qt::WindowContextHelpButtonHint);
-    encodingComboBox = new QComboBox;
-
-    QLabel *encodingLabel = new QLabel(tr("&Encoding:"));
-    encodingLabel->setBuddy(encodingComboBox);
-
-    textEdit = new QPlainTextEdit;
-    textEdit->setLineWrapMode(QPlainTextEdit::NoWrap);
-    textEdit->setReadOnly(true);
-    hexDumpEdit = new QPlainTextEdit;
-    hexDumpEdit->setLineWrapMode(QPlainTextEdit::NoWrap);
-    hexDumpEdit->setReadOnly(true);
-    hexDumpEdit->setFont(QFontDatabase::systemFont(QFontDatabase::FixedFont));
-
-    QDialogButtonBox *buttonBox =
-        new QDialogButtonBox(QDialogButtonBox::Ok | QDialogButtonBox::Cancel);
-    okButton = buttonBox->button(QDialogButtonBox::Ok);
-
-    connect(encodingComboBox, &QComboBox::activated,
-            this, &PreviewForm::updateTextEdit);
-    connect(buttonBox, &QDialogButtonBox::accepted, this, &QDialog::accept);
-    connect(buttonBox, &QDialogButtonBox::rejected, this, &QDialog::reject);
-
-    QGridLayout *mainLayout = new QGridLayout(this);
-    mainLayout->addWidget(encodingLabel, 0, 0);
-    mainLayout->addWidget(encodingComboBox, 0, 1);
-    tabWidget = new QTabWidget;
-    tabWidget->addTab(textEdit, tr("Preview"));
-    tabWidget->addTab(hexDumpEdit, tr("Hex Dump"));
-    mainLayout->addWidget(tabWidget, 1, 0, 1, 2);
-    statusLabel = new QLabel;
-    mainLayout->addWidget(statusLabel, 2, 0, 1, 2);
-    mainLayout->addWidget(buttonBox, 3, 0, 1, 2);
-
-    const QRect screenGeometry = screen()->geometry();
-    resize(screenGeometry.width() * 2 / 5, screenGeometry.height() / 2);
-}
-
-void PreviewForm::setCodecList(const QVector<QTextCodec *> &list)
-{
-    encodingComboBox->clear();
-    for (const QTextCodec *codec : list) {
-        encodingComboBox->addItem(QLatin1String(codec->name()),
-                                  QVariant(codec->mibEnum()));
-    }
-}
-
-void PreviewForm::reset()
-{
-    decodedStr.clear();
-    textEdit->clear();
-    hexDumpEdit->clear();
-    statusLabel->clear();
-    statusLabel->setStyleSheet(QString());
-    okButton->setEnabled(false);
-    tabWidget->setCurrentIndex(0);
-}
-
-void PreviewForm::setEncodedData(const QByteArray &data)
-{
-    reset();
-    encodedData = data;
-    hexDumpEdit->setPlainText(formatHexDump(data));
-    updateTextEdit();
-}
-
-void PreviewForm::updateTextEdit()
-{
-    int mib = encodingComboBox->itemData(
-                      encodingComboBox->currentIndex()).toInt();
-    const QTextCodec *codec = QTextCodec::codecForMib(mib);
-    const QString name = QLatin1String(codec->name());
-
-    QTextCodec::ConverterState state;
-    decodedStr = codec->toUnicode(encodedData.constData(), encodedData.size(), &state);
-
-    bool success = true;
-    if (state.remainingChars) {
-        success = false;
-        const QString message =
-            tr("%1: conversion error at character %2")
-            .arg(name).arg(encodedData.size() - state.remainingChars + 1);
-        statusLabel->setText(message);
-        statusLabel->setStyleSheet(QStringLiteral("background-color: \"red\";"));
-    } else if (state.invalidChars) {
-        statusLabel->setText(tr("%1: %n invalid characters", nullptr, state.invalidChars).arg(name));
-        statusLabel->setStyleSheet(QStringLiteral("background-color: \"yellow\";"));
-    } else {
-        statusLabel->setText(tr("%1: %n bytes converted", nullptr, encodedData.size()).arg(name));
-        statusLabel->setStyleSheet(QString());
-    }
-    if (success)
-        textEdit->setPlainText(decodedStr);
-    else
-        textEdit->clear();
-    okButton->setEnabled(success);
-}