+#include "engine.h"
+#include <QDateTime>
+#include <QTextStream>
+#include <QSettings>
+#include <QStandardPaths>
+#include "globals.h"
+#include "fileworker.h"
+
+Engine::Engine(QObject *parent) :
+ QObject(parent),
+ m_clipboardContainsCopy(false),
+ m_progress(0),
+ m_selectedFilename(""),
+ m_extensionFilter("")
+{
+ m_fileWorker = new FileWorker;
+
+ // update progress property when worker progresses
+ connect(m_fileWorker, SIGNAL(progressChanged(int, QString)),
+ this, SLOT(setProgress(int, QString)));
+
+ // pass worker end signals to QML
+ connect(m_fileWorker, SIGNAL(done()), this, SIGNAL(workerDone()));
+ connect(m_fileWorker, SIGNAL(errorOccurred(QString, QString)),
+ this, SIGNAL(workerErrorOccurred(QString, QString)));
+ connect(m_fileWorker, SIGNAL(fileDeleted(QString)), this, SIGNAL(fileDeleted(QString)));
+}
+
+Engine::~Engine()
+{
+ // is this the way to force stop the worker thread?
+ m_fileWorker->cancel(); // stop possibly running background thread
+ m_fileWorker->wait(); // wait until thread stops
+ delete m_fileWorker; // delete it
+}
+
+void Engine::deleteFiles(QStringList filenames)
+{
+ setProgress(0, "");
+ m_fileWorker->startDeleteFiles(filenames);
+}
+
+void Engine::cutFiles(QStringList filenames)
+{
+ m_clipboardFiles = filenames;
+ m_clipboardContainsCopy = false;
+ emit clipboardCountChanged();
+ emit clipboardContainsCopyChanged();
+}
+
+void Engine::copyFiles(QStringList filenames)
+{
+ m_clipboardFiles = filenames;
+ m_clipboardContainsCopy = true;
+ emit clipboardCountChanged();
+ emit clipboardContainsCopyChanged();
+}
+
+void Engine::pasteFiles(QString destDirectory)
+{
+ if (m_clipboardFiles.isEmpty()) {
+ emit workerErrorOccurred("No files to paste", "");
+ return;
+ }
+
+ QStringList files = m_clipboardFiles;
+ setProgress(0, "");
+
+ QDir dest(destDirectory);
+ if (!dest.exists()) {
+ emit workerErrorOccurred(tr("Destination does not exist"), destDirectory);
+ return;
+ }
+
+ foreach (QString filename, files) {
+ QFileInfo fileInfo(filename);
+ QString newname = dest.absoluteFilePath(fileInfo.fileName());
+
+ // source and dest filenames are the same?
+ if (filename == newname) {
+ emit workerErrorOccurred(tr("Can't overwrite itself"), newname);
+ return;
+ }
+
+ // dest is under source? (directory)
+ if (newname.startsWith(filename)) {
+ emit workerErrorOccurred(tr("Can't move/copy to itself"), filename);
+ return;
+ }
+ }
+
+ m_clipboardFiles.clear();
+ emit clipboardCountChanged();
+
+ if (m_clipboardContainsCopy) {
+ m_fileWorker->startCopyFiles(files, destDirectory);
+ return;
+ }
+
+ m_fileWorker->startMoveFiles(files, destDirectory);
+}
+
+void Engine::cancel()
+{
+ m_fileWorker->cancel();
+}
+
+QString Engine::homeFolder() const
+{
+ return QStandardPaths::writableLocation(QStandardPaths::HomeLocation);
+}
+
+int Engine::startDepth() const
+{
+ return 2;
+}
+
+bool Engine::exists(QString filename)
+{
+ return QFile::exists(filename);
+}
+
+QStringList Engine::diskSpace(QString path)
+{
+ // run df to get disk space
+ QString blockSize = "--block-size=1024";
+ QString result = execute("/bin/df", QStringList() << blockSize << path, false);
+ if (result.isEmpty())
+ return QStringList();
+
+ // parse result
+ QStringList lines = result.split(QRegExp("[\n\r]"));
+ if (lines.count() < 2)
+ return QStringList();
+
+ QString line = lines.at(1);
+ QStringList columns = line.split(QRegExp("\\s+"), QString::SkipEmptyParts);
+ if (columns.count() < 5)
+ return QStringList();
+
+ QString totalString = columns.at(1);
+ QString usedString = columns.at(2);
+ QString percentageString = columns.at(4);
+ qint64 total = totalString.toLongLong() * 1024LL;
+ qint64 used = usedString.toLongLong() * 1024LL;
+
+ return QStringList() << percentageString << filesizeToString(used)+"/"+filesizeToString(total);
+}
+
+QStringList Engine::readFile(QString filename)
+{
+ int maxLines = 1000;
+ int maxSize = 10000;
+ int maxBinSize = 2048;
+
+ // check permissions
+ if (access(filename, R_OK) == -1)
+ return makeStringList(tr("No permission to read the file\n%1").arg(filename));
+
+ QFile file(filename);
+ if (!file.open(QIODevice::ReadOnly))
+ return makeStringList(tr("Error reading file\n%1").arg(filename));
+
+ // read start of file
+ char buffer[maxSize+1];
+ qint64 readSize = file.read(buffer, maxSize);
+ if (readSize < 0)
+ return makeStringList(tr("Error reading file\n%1").arg(filename));
+
+ if (readSize == 0)
+ return makeStringList(tr("Empty file"));
+
+ bool atEnd = file.atEnd();
+ file.close();
+
+ // detect binary or text file, it is binary if it contains zeros
+ bool isText = true;
+ for (int i = 0; i < readSize; ++i) {
+ if (buffer[i] == 0) {
+ isText = false;
+ break;
+ }
+ }
+
+ // binary output
+ if (!isText) {
+ // two different line widths
+ if (readSize > maxBinSize) {
+ readSize = maxBinSize;
+ atEnd = false;
+ }
+ QString out8 = createHexDump(buffer, readSize, 8);
+ QString out16 = createHexDump(buffer, readSize, 16);
+ QString msg = "";
+
+ if (!atEnd) {
+ msg = tr("--- Binary file preview clipped at %1 kB ---").arg(maxBinSize/1000);
+ msg = tr("--- Binary file preview clipped at %1 kB ---").arg(maxBinSize/1000);
+ }
+
+ return QStringList() << msg << out8 << out16;
+ }
+
+ // read lines to a string list and join
+ QByteArray ba(buffer, readSize);
+ QTextStream in(&ba);
+ QStringList lines;
+ int lineCount = 0;
+ while (!in.atEnd() && lineCount < maxLines) {
+ QString line = in.readLine();
+ lines.append(line);
+ lineCount++;
+ }
+
+ QString msg = "";
+ if (lineCount == maxLines)
+ msg = tr("--- Text file preview clipped at %1 lines ---").arg(maxLines);
+ else if (!atEnd)
+ msg = tr("--- Text file preview clipped at %1 kB ---").arg(maxSize/1000);
+
+ return makeStringList(msg, lines.join("\n"));
+}
+
+QString Engine::mkdir(QString path, QString name)
+{
+ QDir dir(path);
+
+ if (!dir.mkdir(name)) {
+ if (access(dir.absolutePath(), W_OK) == -1)
+ return tr("Cannot create folder %1\nPermission denied").arg(name);
+
+ return tr("Cannot create folder %1").arg(name);
+ }
+
+ return QString();
+}
+
+QStringList Engine::rename(QString fullOldFilename, QString newName)
+{
+ QFile file(fullOldFilename);
+ QFileInfo fileInfo(fullOldFilename);
+ QDir dir = fileInfo.absoluteDir();
+ QString fullNewFilename = dir.absoluteFilePath(newName);
+
+ QString errorMessage;
+ if (!file.rename(fullNewFilename)) {
+ QString oldName = fileInfo.fileName();
+ errorMessage = tr("Cannot rename %1\n%2").arg(oldName).arg(file.errorString());
+ }
+
+ return QStringList() << fullNewFilename << errorMessage;
+}
+
+QString Engine::chmod(QString path,
+ bool ownerRead, bool ownerWrite, bool ownerExecute,
+ bool groupRead, bool groupWrite, bool groupExecute,
+ bool othersRead, bool othersWrite, bool othersExecute)
+{
+ QFile file(path);
+ QFileDevice::Permissions p;
+ if (ownerRead) p |= QFileDevice::ReadOwner;
+ if (ownerWrite) p |= QFileDevice::WriteOwner;
+ if (ownerExecute) p |= QFileDevice::ExeOwner;
+ if (groupRead) p |= QFileDevice::ReadGroup;
+ if (groupWrite) p |= QFileDevice::WriteGroup;
+ if (groupExecute) p |= QFileDevice::ExeGroup;
+ if (othersRead) p |= QFileDevice::ReadOther;
+ if (othersWrite) p |= QFileDevice::WriteOther;
+ if (othersExecute) p |= QFileDevice::ExeOther;
+ if (!file.setPermissions(p))
+ return tr("Cannot change permissions\n%1").arg(file.errorString());
+
+ return QString();
+}
+
+QString Engine::readSetting(QString key, QString defaultValue)
+{
+ QSettings settings;
+ return settings.value(key, defaultValue).toString();
+}
+
+void Engine::writeSetting(QString key, QString value)
+{
+ QSettings settings;
+
+ // do nothing if value didn't change
+ if (settings.value(key) == value)
+ return;
+
+ settings.setValue(key, value);
+
+ emit settingsChanged();
+}
+
+void Engine::setProgress(int progress, QString filename)
+{
+ m_progress = progress;
+ m_progressFilename = filename;
+ emit progressChanged();
+ emit progressFilenameChanged();
+}
+
+QString Engine::createHexDump(char *buffer, int size, int bytesPerLine)
+{
+ QString out;
+ QString ascDump;
+ int i;
+ for (i = 0; i < size; ++i) {
+ if ((i % bytesPerLine) == 0) { // line change
+ out += " "+ascDump+"\n"+
+ QString("%1").arg(QString::number(i, 16), 4, QLatin1Char('0'))+": ";
+ ascDump.clear();
+ }
+
+ out += QString("%1").arg(QString::number((unsigned char)buffer[i], 16),
+ 2, QLatin1Char('0'))+" ";
+ if (buffer[i] >= 32 && buffer[i] <= 126)
+ ascDump += buffer[i];
+ else
+ ascDump += ".";
+ }
+ // write out remaining asc dump
+ if ((i % bytesPerLine) > 0) {
+ int emptyBytes = bytesPerLine - (i % bytesPerLine);
+ for (int j = 0; j < emptyBytes; ++j) {
+ out += " ";
+ }
+ }
+ out += " "+ascDump;
+
+ return out;
+}
+
+QStringList Engine::makeStringList(QString msg, QString str)
+{
+ QStringList list;
+ list << msg << str << str;
+ return list;
+}
+
+void Engine::setSelectedFilename(QString selectedFilename)
+{
+ m_selectedFilename = selectedFilename;
+ emit selectedFilenameChanged();
+}
+
+void Engine::setExtensionFilter(QString extensionFilter)
+{
+ if (m_extensionFilter != extensionFilter) {
+ m_extensionFilter = extensionFilter;
+ emit extensionFilterChanged();
+ }
+}
projects / openvpnui.git / commitdiff
