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// Copyright (C) 2018 Intel Corporation.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include "converter.h"
#include <QCommandLineParser>
#include <QCommandLineOption>
#include <QCoreApplication>
#include <QFile>
#include <QFileInfo>
#include <stdio.h>
using namespace Qt::StringLiterals;
static QList<const Converter *> *availableConverters;
Converter::Converter()
{
if (!availableConverters)
availableConverters = new QList<const Converter *>;
availableConverters->append(this);
}
Converter::~Converter()
{
availableConverters->removeAll(this);
}
int main(int argc, char *argv[])
{
QCoreApplication app(argc, argv);
QStringList inputFormats;
QStringList outputFormats;
for (const Converter *conv : std::as_const(*availableConverters)) {
auto direction = conv->directions();
QString name = conv->name();
if (direction.testFlag(Converter::Direction::In))
inputFormats << name;
if (direction.testFlag(Converter::Direction::Out))
outputFormats << name;
}
inputFormats.sort();
outputFormats.sort();
inputFormats.prepend("auto"_L1);
outputFormats.prepend("auto"_L1);
QCommandLineParser parser;
parser.setApplicationDescription("Qt file format conversion tool"_L1);
parser.addHelpOption();
QCommandLineOption inputFormatOption(QStringList{ "I"_L1, "input-format"_L1 });
inputFormatOption.setDescription(
"Select the input format for the input file. Available formats: "_L1
+ inputFormats.join(", "_L1));
inputFormatOption.setValueName("format"_L1);
inputFormatOption.setDefaultValue(inputFormats.constFirst());
parser.addOption(inputFormatOption);
QCommandLineOption outputFormatOption(QStringList{ "O"_L1, "output-format"_L1 });
outputFormatOption.setDescription(
"Select the output format for the output file. Available formats: "_L1
+ outputFormats.join(", "_L1));
outputFormatOption.setValueName("format"_L1);
outputFormatOption.setDefaultValue(outputFormats.constFirst());
parser.addOption(outputFormatOption);
QCommandLineOption optionOption(QStringList{ "o"_L1, "option"_L1 });
optionOption.setDescription(
"Format-specific options. Use --format-options to find out what options are available."_L1);
optionOption.setValueName("options..."_L1);
optionOption.setDefaultValues({});
parser.addOption(optionOption);
QCommandLineOption formatOptionsOption("format-options"_L1);
formatOptionsOption.setDescription(
"Prints the list of valid options for --option for the converter format <format>."_L1);
formatOptionsOption.setValueName("format"_L1);
parser.addOption(formatOptionsOption);
parser.addPositionalArgument("[source]"_L1, "File to read from (stdin if none)"_L1);
parser.addPositionalArgument("[destination]"_L1, "File to write to (stdout if none)"_L1);
parser.process(app);
if (parser.isSet(formatOptionsOption)) {
QString format = parser.value(formatOptionsOption);
for (const Converter *conv : std::as_const(*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;
}
const Converter *inconv = nullptr;
QString format = parser.value(inputFormatOption);
if (format != "auto"_L1) {
for (const Converter *conv : std::as_const(*availableConverters)) {
if (conv->name() == format) {
inconv = conv;
break;
}
}
if (!inconv) {
fprintf(stderr, "Unknown file format \"%s\"\n", qPrintable(format));
return EXIT_FAILURE;
}
}
const Converter *outconv = nullptr;
format = parser.value(outputFormatOption);
if (format != "auto"_L1) {
for (const Converter *conv : std::as_const(*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 (const Converter *conv : std::as_const(*availableConverters)) {
if (conv->directions().testFlag(Converter::Direction::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 (const Converter *conv : std::as_const(*availableConverters)) {
if (conv->directions().testFlag(Converter::Direction::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;
}
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