9be00330af
This example converts to and from: - Binary JSON - CBOR - CBOR Diagnostic notation (output only) - JSON - Null (output only) - QDataStream - QVariant dump (output only) - Text - XML Change-Id: Ibab69e0efefb40bdbf94fffd150b59f8c0da3174 Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
235 lines
8.7 KiB
C++
235 lines
8.7 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2018 Intel Corporation.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** BSD License Usage
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** Alternatively, you may use this file under the terms of the BSD license
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** as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of The Qt Company Ltd nor the names of its
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** contributors may be used to endorse or promote products derived
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** from this software without specific prior written permission.
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**
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "converter.h"
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#include <QCommandLineParser>
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#include <QCommandLineOption>
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#include <QCoreApplication>
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#include <QFile>
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#include <QFileInfo>
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#include <stdio.h>
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static QVector<Converter *> *availableConverters;
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Converter::Converter()
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{
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if (!availableConverters)
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availableConverters = new QVector<Converter *>;
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availableConverters->append(this);
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}
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Converter::~Converter()
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{
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availableConverters->removeAll(this);
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}
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int main(int argc, char *argv[])
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{
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QCoreApplication app(argc, argv);
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QStringList inputFormats;
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QStringList outputFormats;
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for (Converter *conv : qAsConst(*availableConverters)) {
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auto direction = conv->directions();
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QString name = conv->name();
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if (direction & Converter::In)
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inputFormats << name;
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if (direction & Converter::Out)
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outputFormats << name;
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}
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inputFormats.sort();
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outputFormats.sort();
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inputFormats.prepend("auto");
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outputFormats.prepend("auto");
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QCommandLineParser parser;
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parser.setApplicationDescription(QStringLiteral("Qt file format conversion tool"));
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parser.addHelpOption();
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QCommandLineOption inputFormatOption(QStringList{"I", "input-format"});
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inputFormatOption.setDescription(QLatin1String("Select the input format for the input file. Available formats: ") +
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inputFormats.join(", "));
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inputFormatOption.setValueName("format");
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inputFormatOption.setDefaultValue(inputFormats.constFirst());
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parser.addOption(inputFormatOption);
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QCommandLineOption outputFormatOption(QStringList{"O", "output-format"});
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outputFormatOption.setDescription(QLatin1String("Select the output format for the output file. Available formats: ") +
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outputFormats.join(", "));
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outputFormatOption.setValueName("format");
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outputFormatOption.setDefaultValue(outputFormats.constFirst());
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parser.addOption(outputFormatOption);
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QCommandLineOption optionOption(QStringList{"o", "option"});
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optionOption.setDescription(QStringLiteral("Format-specific options. Use --format-options to find out what options are available."));
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optionOption.setValueName("options...");
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optionOption.setDefaultValues({});
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parser.addOption(optionOption);
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QCommandLineOption formatOptionsOption("format-options");
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formatOptionsOption.setDescription(QStringLiteral("Prints the list of valid options for --option for the converter format <format>."));
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formatOptionsOption.setValueName("format");
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parser.addOption(formatOptionsOption);
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parser.addPositionalArgument(QStringLiteral("[source]"),
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QStringLiteral("File to read from (stdin if none)"));
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parser.addPositionalArgument(QStringLiteral("[destination]"),
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QStringLiteral("File to write to (stdout if none)"));
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parser.process(app);
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if (parser.isSet(formatOptionsOption)) {
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QString format = parser.value(formatOptionsOption);
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for (Converter *conv : qAsConst(*availableConverters)) {
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if (conv->name() == format) {
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const char *help = conv->optionsHelp();
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if (help)
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printf("The following options are available for format '%s':\n\n%s", qPrintable(format), help);
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else
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printf("Format '%s' supports no options.\n", qPrintable(format));
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return EXIT_SUCCESS;
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}
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}
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fprintf(stderr, "Unknown file format '%s'\n", qPrintable(format));
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return EXIT_FAILURE;
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}
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Converter *inconv = nullptr;
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QString format = parser.value(inputFormatOption);
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if (format != "auto") {
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for (Converter *conv : qAsConst(*availableConverters)) {
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if (conv->name() == format) {
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inconv = conv;
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break;
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}
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}
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if (!inconv) {
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fprintf(stderr, "Unknown file format \"%s\"\n", qPrintable(format));
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return EXIT_FAILURE;
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}
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}
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Converter *outconv = nullptr;
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format = parser.value(outputFormatOption);
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if (format != "auto") {
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for (Converter *conv : qAsConst(*availableConverters)) {
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if (conv->name() == format) {
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outconv = conv;
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break;
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}
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}
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if (!outconv) {
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fprintf(stderr, "Unknown file format \"%s\"\n", qPrintable(format));
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return EXIT_FAILURE;
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}
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}
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QStringList files = parser.positionalArguments();
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QFile input(files.value(0));
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QFile output(files.value(1));
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if (input.fileName().isEmpty())
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input.open(stdin, QIODevice::ReadOnly);
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else
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input.open(QIODevice::ReadOnly);
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if (!input.isOpen()) {
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fprintf(stderr, "Could not open \"%s\" for reading: %s\n",
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qPrintable(input.fileName()), qPrintable(input.errorString()));
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return EXIT_FAILURE;
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}
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if (output.fileName().isEmpty())
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output.open(stdout, QIODevice::WriteOnly | QIODevice::Truncate);
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else
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output.open(QIODevice::WriteOnly | QIODevice::Truncate);
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if (!output.isOpen()) {
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fprintf(stderr, "Could not open \"%s\" for writing: %s\n",
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qPrintable(output.fileName()), qPrintable(output.errorString()));
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return EXIT_FAILURE;
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}
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if (!inconv) {
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// probe the input to find a file format
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for (Converter *conv : qAsConst(*availableConverters)) {
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if (conv->directions() & Converter::In && conv->probeFile(&input)) {
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inconv = conv;
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break;
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}
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}
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if (!inconv) {
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fprintf(stderr, "Could not determine input format. pass -I option.\n");
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return EXIT_FAILURE;
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}
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}
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if (!outconv) {
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// probe the output to find a file format
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for (Converter *conv : qAsConst(*availableConverters)) {
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if (conv->directions() & Converter::Out && conv->probeFile(&output)) {
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outconv = conv;
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break;
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}
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}
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}
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// now finally perform the conversion
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QVariant data = inconv->loadFile(&input, outconv);
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Q_ASSERT_X(outconv, "Converter Tool",
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"Internal error: converter format did not provide default");
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outconv->saveFile(&output, data, parser.values(optionOption));
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return EXIT_SUCCESS;
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}
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