#include "mimeutils.h"
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#include <QApplication>
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#include <QDir>
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#include <QDirIterator>
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#include <QProcess>
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#include <QDebug>
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#include <QMessageBox>
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#include <QMimeDatabase>
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#include <QMimeType>
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#define MIME_APPS1 "/.local/share/applications/mimeapps.list"
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#define MIME_APPS2 "/usr/share/applications/mimeapps.list"
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/**
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* @brief Creates mime utils
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* @param parent
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*/
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MimeUtils::MimeUtils(QObject *parent) : QObject(parent) {
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QString path(QDir::homePath() + MIME_APPS1);
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QFileInfo fi(path);
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if(fi.exists()){
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defaultsFileName = path;
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} else {
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QFileInfo ff(MIME_APPS2);
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if(ff.exists())
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defaultsFileName = MIME_APPS2;
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}
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getProperties();
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load(defaultsFileName, "Default Applications");
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defaultsChanged = false;
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}
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MimeUtils::~MimeUtils() {
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}
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//---------------------------------------------------------------------------
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/**
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* @brief Loads property file
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* @param fileName
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* @param group
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* @return true if load was successful
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*/
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bool MimeUtils::load(const QString &fileName, const QString &group) {
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// NOTE: This class is used for reading of property files instead of QSettings
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// class, which considers separator ';' as comment
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// Try open file
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QFile file(fileName);
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if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) {
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return false;
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}
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// Clear old data
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data.clear();
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// Indicator whether group was found or not, if name of group was not
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// specified, groupFound is always true
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bool groupFound = group.isEmpty();
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// Read propeties
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QTextStream in(&file);
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while (!in.atEnd()) {
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// Read new line
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QString line = in.readLine();
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// Skip empty line or line with invalid format
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if (line.trimmed().isEmpty()) {
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continue;
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}
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// Read group
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// NOTE: symbols '[' and ']' can be found not only in group names, but
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// only group can start with '['
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if (!group.isEmpty() && line.trimmed().startsWith("[")) {
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QString tmp = line.trimmed().replace("[", "").replace("]", "");
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groupFound = group.trimmed().compare(tmp) == 0;
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}
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// If we are in correct group and line contains assignment then read data
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if (groupFound && line.contains("=")) {
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QStringList tmp = line.split("=");
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data.insert(tmp.at(0), tmp.at(1));
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}
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}
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file.close();
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return true;
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}
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QVariant MimeUtils::value(const QString &key, const QVariant &defaultValue) {
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return data.value(key, defaultValue);
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}
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void MimeUtils::getProperties(const QString &fileName, const QString &group) {
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if (!fileName.isEmpty()) {
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load(fileName, group);
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}
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}
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/**
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* @brief Returns mime type of given file
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* @note This operation is slow, prevent its mass application
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* @param path path to file
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* @return mime type
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*/
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QString MimeUtils::getMimeType(const QString &path) {
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QMimeDatabase db;
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QMimeType type = db.mimeTypeForFile(path);
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//qDebug() << "mime type" << type.name() << path;
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return type.name();
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}
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void MimeUtils::getDesktopFile(const QString &fileName) {
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// Store file name
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this->fileName = fileName;
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// File validity
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if (!QFile::exists(fileName)) {
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return;
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}
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// Loads .desktop file (read from 'Desktop Entry' group)
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getProperties(fileName, "Desktop Entry");
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name = value("Name", "").toString();
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genericName = value("GenericName", "").toString();
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exec = value("Exec", "").toString();
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icon = value("Icon", "").toString();
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type = value("Type", "Application").toString();
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no_display = value("NoDisplay", false).toBool();
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terminal = value("Terminal", false).toBool();
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categories = value("Categories").toString().remove(" ").split(";");
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mimeType = value("MimeType").toString().remove(" ").split(";");
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// Fix categories
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if (categories.first().compare("") == 0) {
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categories.removeFirst();
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}
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}
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//---------------------------------------------------------------------------
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QStringList MimeUtils::applicationLocations(QString appPath)
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{
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QStringList result;
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result << QString("%1/.local/share/applications").arg(QDir::homePath());
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result << QString("%1/../share/applications").arg(appPath);
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result << "/usr/share/applications" << "/usr/local/share/applications";
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return result;
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}
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QString MimeUtils::findApplication(QString appPath, QString desktopFile)
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{
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QString result;
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if (desktopFile.isEmpty()) { return result; }
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QStringList apps = applicationLocations(appPath);
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for (int i=0;i<apps.size();++i) {
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QDirIterator it(apps.at(i), QStringList("*.desktop"), QDir::Files|QDir::NoDotAndDotDot);
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while (it.hasNext()) {
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QString found = it.next();
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if (found.split("/").takeLast()==desktopFile) {
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//qDebug() << "found app" << found;
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return found;
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}
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}
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}
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return result;
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}
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void MimeUtils::checkAndKillRunningApp(QString &appName)
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{
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QProcess p;
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QString s;
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s = "ps -aux";
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p.start(s);
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p.waitForStarted();
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p.waitForFinished();
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QByteArray b = p.readAll();
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QString out = QString::fromLocal8Bit(b);
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if(out.contains(appName)){
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QString str = appName.mid(appName.lastIndexOf('/') + 1, s.size());
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s = "killall " + str;
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qDebug() << "killing existing app: " + str;
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p.start(s);
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p.waitForFinished();
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}
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}
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/**
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* @brief Opens file in a default application
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* @param file
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* @param processOwner
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*/
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void MimeUtils::openInApp(const QFileInfo &file, QString termCmd) {
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qDebug() << "openInApp without app";
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QString mime = getMimeType(file.absoluteFilePath());
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load(defaultsFileName, "Default Applications");
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QString app = value(mime).toString().split(";").first();
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if (app.isEmpty() && mime.startsWith("text/") && mime != "text/plain") {
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// fallback for text
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app = value("text/plain").toString().split(";").first();
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}
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QString desktop = findApplication(qApp->applicationFilePath(), app);
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qDebug() << "openInApp" << file.absoluteFilePath() << termCmd << mime << app << desktop;
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if (!desktop.isEmpty()) {
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getDesktopFile(desktop);
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if (!terminal) { termCmd.clear(); }
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else {
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if (termCmd.isEmpty()) { termCmd = "xterm"; }
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}
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openInApp(exec, file, termCmd);
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} else {
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QString title = tr("No default application");
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QString msg = tr("No default application for mime: %1!").arg(mime);
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QMessageBox::warning(Q_NULLPTR, title, msg);
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}
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}
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//---------------------------------------------------------------------------
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/**
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* @brief Opens file in a given application
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* @param exe name of application to be executed
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* @param file to be opened in executed application
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* @param processOwner process owner (default NULL)
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*/
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void MimeUtils::openInApp(QString exe, const QFileInfo &file,
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QString termCmd) {
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qDebug() << "openInApp" << exe << file.absoluteFilePath() << termCmd;
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// This is not the right the solution, but qpdfview won't start otherwise
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// TODO: Repair it correctly
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if (exe.contains("qpdfview")) {
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exe = "qpdfview";
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}
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// Separate application name from its arguments
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QStringList split = exe.split(" ");
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QString name = split.takeAt(0);
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QString args = split.join(" ");
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// Get relative path
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//args = args.split(QDir::separator()).last();
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// Replace parameters with file name. If there are no parameters simply append
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// file name to the end of argument list
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if (args.toLower().contains("%f")) {
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args.replace("%f", "\"" + file.filePath() + "\"", Qt::CaseInsensitive);
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} else if (args.toLower().contains("%u")) {
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args.replace("%u", "\"" + file.filePath() + "\"", Qt::CaseInsensitive);
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} else {
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args.append(args.isEmpty() ? "" : " ");
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args.append("\"" + file.filePath() + "\"");
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}
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qDebug() << "qprocess start detached" << name << args;
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checkAndKillRunningApp(name);
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// Start application
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/* QProcess *myProcess = new QProcess(processOwner);
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myProcess->startDetached(name, QStringList() << args);
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myProcess->waitForFinished(1000);
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//myProcess->terminate();*/
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//Q_UNUSED(processOwner)
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QString cmd = name;
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if (termCmd.isEmpty()) {
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cmd.append(" ");
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cmd.append(args);
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} else {
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cmd = QString("%1 -e \"%2 %3\"").arg(termCmd).arg(name).arg(args);
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}
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qDebug() << "running:" << cmd;
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QProcess::startDetached(cmd);
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}
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void MimeUtils::openFiles(const QStringList &files) {
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qDebug() << "openInApp without app";
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QString mime = getMimeType(files[0]);
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load(defaultsFileName, "Default Applications");
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QString app = value(mime).toString().split(";").first();
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QString desktop = findApplication(qApp->applicationFilePath(), app);
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QString file;
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for(int i = 0; i < files.size(); i++){
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file.append(files[i]).append(" ");
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}
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qDebug() << "openInApp" << file << mime << app << desktop;
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if (!desktop.isEmpty()) {
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getDesktopFile(desktop);
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// openInApp(exec, file, termCmd);
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qDebug() << "openInApp" << exec << file;
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// Separate application name from its arguments
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QStringList split = exec.split(" ");
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QString name = split.takeAt(0);
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QString args = split.join(" ");
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if (args.toLower().contains("%f")) {
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args.replace("%f", file, Qt::CaseInsensitive);
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} else if (args.toLower().contains("%u")) {
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args.replace("%u", file, Qt::CaseInsensitive);
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} else {
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args.append(args.isEmpty() ? "" : " ");
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args.append(file);
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}
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qDebug() << "qprocess start detached" << name << args;
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checkAndKillRunningApp(name);
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QString cmd = name;
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cmd.append(" ");
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cmd.append(args);
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qDebug() << "running:" << cmd;
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QProcess::startDetached(cmd);
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} else {
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QString title = tr("No default application");
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QString msg = tr("No default application for mime: %1!").arg(mime);
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QMessageBox::warning(Q_NULLPTR, title, msg);
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}
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}
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