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/*
This file is part of KDE Schema Parser
Copyright (c) 2005 Tobias Koenig <tokoe@kde.org>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "fileprovider.h"
#include <QCoreApplication>
#include <QEventLoop>
#include <QFile>
#include <QUrl>
#include <QDebug>
#include <QDir>
#include <QNetworkAccessManager>
#include <QNetworkRequest>
#include <QNetworkReply>
#include <QTemporaryFile>
#ifndef Q_OS_WIN
# include <unistd.h>
#endif
static QHash<QUrl, QByteArray> fileProviderCache;
FileProvider::FileProvider(bool useLocalFilesOnly, const QStringList &importPathList,
const QMap<QUrl, QString> &localSchemas)
: mUseLocalFilesOnly(useLocalFilesOnly),
mImportPathList(importPathList),
mLocalSchemas(localSchemas)
{
}
FileProvider::~FileProvider()
{
cleanUp();
}
void FileProvider::cleanUp()
{
if (!mFileName.isEmpty()) {
QFile::remove(mFileName);
mFileName = QString();
}
}
bool FileProvider::get(const QUrl &url, QString &target)
{
if (!mFileName.isEmpty()) {
cleanUp();
}
if (url.isLocalFile()) {
target = url.toLocalFile();
return true;
}
if (url.scheme() == QLatin1String("qrc")) {
target = QLatin1String(":") + url.path();
return true;
}
const auto localSchemaIt = mLocalSchemas.constFind(url);
if (localSchemaIt != mLocalSchemas.constEnd()) {
target = localSchemaIt.value();
return true;
}
Q_FOREACH (const QString &importPath, mImportPathList) {
QDir importDir(importPath);
QString path = importDir.absoluteFilePath(url.host() + QDir::separator() + url.path());
if (QFile::exists(path)) {
qDebug("Using import path '%s'", qPrintable(path));
target = path;
return true;
}
}
if (mUseLocalFilesOnly) {
qCritical("ERROR: Could not find the local file for '%s'", qPrintable(url.toEncoded()));
qCritical("ERROR: Try to download the file using:");
qCritical("ERROR: $ cd %s", qPrintable(mImportPathList.first()));
qCritical("ERROR: $ wget -r %s", qPrintable(url.toEncoded()));
qCritical("ERROR: Or use the -import-path argument to set the correct search path");
QCoreApplication::exit(12);
return false;
}
if (target.isEmpty()) {
QTemporaryFile tmpFile;
tmpFile.setAutoRemove(false);
tmpFile.open();
target = tmpFile.fileName();
mFileName = target;
}
QByteArray data;
const QHash<QUrl, QByteArray>::const_iterator it = fileProviderCache.constFind(url);
if (it != fileProviderCache.constEnd()) {
data = it.value();
} else {
qDebug("Downloading '%s'", url.toEncoded().constData());
QNetworkAccessManager manager;
manager.setRedirectPolicy(QNetworkRequest::NoLessSafeRedirectPolicy);
QNetworkRequest request(url);
QNetworkReply *job = manager.get(request);
QEventLoop loop;
QObject::connect(job, &QNetworkReply::finished, &loop, &QEventLoop::quit);
loop.exec();
if (job->error()) {
qWarning("Error downloading '%s': %s", url.toEncoded().constData(),
qPrintable(job->errorString()));
return false;
}
qDebug("Download successful");
data = job->readAll();
fileProviderCache[url] = data;
}
QFile file(mFileName);
if (!file.open(QIODevice::WriteOnly)) {
qWarning() << "Unable to create" << mFileName << ":" << file.errorString();
return false;
}
file.write(data);
file.close();
return true;
}
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