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+/****************************************************************************
+**
+** Copyright (C) 2018 Intel Corporation.
+** 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 "converter.h"
+
+#include <QCommandLineParser>
+#include <QCommandLineOption>
+#include <QCoreApplication>
+#include <QFile>
+#include <QFileInfo>
+
+#include <stdio.h>
+
+static QVector<Converter *> *availableConverters;
+
+Converter::Converter()
+{
+ if (!availableConverters)
+ availableConverters = new QVector<Converter *>;
+ availableConverters->append(this);
+}
+
+Converter::~Converter()
+{
+ availableConverters->removeAll(this);
+}
+
+int main(int argc, char *argv[])
+{
+ QCoreApplication app(argc, argv);
+
+ QStringList inputFormats;
+ QStringList outputFormats;
+ for (Converter *conv : qAsConst(*availableConverters)) {
+ auto direction = conv->directions();
+ QString name = conv->name();
+ if (direction & Converter::In)
+ inputFormats << name;
+ if (direction & Converter::Out)
+ outputFormats << name;
+ }
+ inputFormats.sort();
+ outputFormats.sort();
+ inputFormats.prepend("auto");
+ outputFormats.prepend("auto");
+
+ QCommandLineParser parser;
+ parser.setApplicationDescription(QStringLiteral("Qt file format conversion tool"));
+ parser.addHelpOption();
+
+ QCommandLineOption inputFormatOption(QStringList{"I", "input-format"});
+ inputFormatOption.setDescription(QLatin1String("Select the input format for the input file. Available formats: ") +
+ inputFormats.join(", "));
+ inputFormatOption.setValueName("format");
+ inputFormatOption.setDefaultValue(inputFormats.constFirst());
+ parser.addOption(inputFormatOption);
+
+ QCommandLineOption outputFormatOption(QStringList{"O", "output-format"});
+ outputFormatOption.setDescription(QLatin1String("Select the output format for the output file. Available formats: ") +
+ outputFormats.join(", "));
+ outputFormatOption.setValueName("format");
+ outputFormatOption.setDefaultValue(outputFormats.constFirst());
+ parser.addOption(outputFormatOption);
+
+ QCommandLineOption optionOption(QStringList{"o", "option"});
+ optionOption.setDescription(QStringLiteral("Format-specific options. Use --format-options to find out what options are available."));
+ optionOption.setValueName("options...");
+ optionOption.setDefaultValues({});
+ parser.addOption(optionOption);
+
+ QCommandLineOption formatOptionsOption("format-options");
+ formatOptionsOption.setDescription(QStringLiteral("Prints the list of valid options for --option for the converter format <format>."));
+ formatOptionsOption.setValueName("format");
+ parser.addOption(formatOptionsOption);
+
+ parser.addPositionalArgument(QStringLiteral("[source]"),
+ QStringLiteral("File to read from (stdin if none)"));
+ parser.addPositionalArgument(QStringLiteral("[destination]"),
+ QStringLiteral("File to write to (stdout if none)"));
+
+ parser.process(app);
+
+ if (parser.isSet(formatOptionsOption)) {
+ QString format = parser.value(formatOptionsOption);
+ for (Converter *conv : qAsConst(*availableConverters)) {
+ if (conv->name() == format) {
+ const char *help = conv->optionsHelp();
+ if (help)
+ printf("The following options are available for format '%s':\n\n%s", qPrintable(format), help);
+ else
+ printf("Format '%s' supports no options.\n", qPrintable(format));
+ return EXIT_SUCCESS;
+ }
+ }
+
+ fprintf(stderr, "Unknown file format '%s'\n", qPrintable(format));
+ return EXIT_FAILURE;
+ }
+
+ Converter *inconv = nullptr;
+ QString format = parser.value(inputFormatOption);
+ if (format != "auto") {
+ for (Converter *conv : qAsConst(*availableConverters)) {
+ if (conv->name() == format) {
+ inconv = conv;
+ break;
+ }
+ }
+
+ if (!inconv) {
+ fprintf(stderr, "Unknown file format \"%s\"\n", qPrintable(format));
+ return EXIT_FAILURE;
+ }
+ }
+
+ Converter *outconv = nullptr;
+ format = parser.value(outputFormatOption);
+ if (format != "auto") {
+ for (Converter *conv : qAsConst(*availableConverters)) {
+ if (conv->name() == format) {
+ outconv = conv;
+ break;
+ }
+ }
+
+ if (!outconv) {
+ fprintf(stderr, "Unknown file format \"%s\"\n", qPrintable(format));
+ return EXIT_FAILURE;
+ }
+ }
+
+ QStringList files = parser.positionalArguments();
+ QFile input(files.value(0));
+ QFile output(files.value(1));
+
+ if (input.fileName().isEmpty())
+ input.open(stdin, QIODevice::ReadOnly);
+ else
+ input.open(QIODevice::ReadOnly);
+ if (!input.isOpen()) {
+ fprintf(stderr, "Could not open \"%s\" for reading: %s\n",
+ qPrintable(input.fileName()), qPrintable(input.errorString()));
+ return EXIT_FAILURE;
+ }
+
+ if (output.fileName().isEmpty())
+ output.open(stdout, QIODevice::WriteOnly | QIODevice::Truncate);
+ else
+ output.open(QIODevice::WriteOnly | QIODevice::Truncate);
+ if (!output.isOpen()) {
+ fprintf(stderr, "Could not open \"%s\" for writing: %s\n",
+ qPrintable(output.fileName()), qPrintable(output.errorString()));
+ return EXIT_FAILURE;
+ }
+
+ if (!inconv) {
+ // probe the input to find a file format
+ for (Converter *conv : qAsConst(*availableConverters)) {
+ if (conv->directions() & Converter::In && conv->probeFile(&input)) {
+ inconv = conv;
+ break;
+ }
+ }
+
+ if (!inconv) {
+ fprintf(stderr, "Could not determine input format. pass -I option.\n");
+ return EXIT_FAILURE;
+ }
+ }
+
+ if (!outconv) {
+ // probe the output to find a file format
+ for (Converter *conv : qAsConst(*availableConverters)) {
+ if (conv->directions() & Converter::Out && conv->probeFile(&output)) {
+ outconv = conv;
+ break;
+ }
+ }
+ }
+
+ // now finally perform the conversion
+ QVariant data = inconv->loadFile(&input, outconv);
+ Q_ASSERT_X(outconv, "Converter Tool",
+ "Internal error: converter format did not provide default");
+ outconv->saveFile(&output, data, parser.values(optionOption));
+ return EXIT_SUCCESS;
+}