Chris@1243: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@1243: 
Chris@1243: /*
Chris@1243:     Sonic Visualiser
Chris@1243:     An audio file viewer and annotation editor.
Chris@1243:     Centre for Digital Music, Queen Mary, University of London.
Chris@1243:     This file copyright 2006-2016 Chris Cannam and QMUL.
Chris@1243:     
Chris@1243:     This program is free software; you can redistribute it and/or
Chris@1243:     modify it under the terms of the GNU General Public License as
Chris@1243:     published by the Free Software Foundation; either version 2 of the
Chris@1243:     License, or (at your option) any later version.  See the file
Chris@1243:     COPYING included with this distribution for more information.
Chris@1243: */
Chris@1243: 
Chris@1243: #include "HelperExecPath.h"
Chris@1243: 
Chris@1243: #include <QCoreApplication>
Chris@1243: #include <QFile>
Chris@1243: #include <QDir>
Chris@1243: #include <QFileInfo>
Chris@1243: 
Chris@1246: QStringList
Chris@1246: HelperExecPath::getTags()
Chris@1243: {
Chris@1243:     if (sizeof(void *) == 8) {
Chris@1246:         if (m_type == NativeArchitectureOnly) {
Chris@1246:             return { "64", "" };
Chris@1246:         } else {
Chris@1246:             return { "64", "", "32" };
Chris@1246:         }
Chris@1243:     } else {
Chris@1246:         return { "", "32" };
Chris@1243:     }
Chris@1243: }
Chris@1243: 
Chris@1243: static bool
Chris@1243: isGood(QString path)
Chris@1243: {
Chris@1243:     return QFile(path).exists() && QFileInfo(path).isExecutable();
Chris@1243: }
Chris@1243: 
Chris@1246: QList<HelperExecPath::HelperExec>
Chris@1243: HelperExecPath::getHelperExecutables(QString basename)
Chris@1243: {
Chris@1243:     QStringList dummy;
Chris@1243:     return search(basename, dummy);
Chris@1243: }
Chris@1243: 
Chris@1243: QString
Chris@1243: HelperExecPath::getHelperExecutable(QString basename)
Chris@1243: {
Chris@1246:     auto execs = getHelperExecutables(basename);
Chris@1243:     if (execs.empty()) return "";
Chris@1246:     else return execs[0].executable;
Chris@1243: }
Chris@1243: 
Chris@1243: QStringList
Chris@1243: HelperExecPath::getHelperDirPaths()
Chris@1243: {
Chris@1781:     // Helpers are expected to exist in one of the following, in order
Chris@1781:     // from most strongly preferred to least:
Chris@1781:     //
Chris@1781:     // 1. (on Mac only) in <mydir>/../Resources
Chris@1781:     //
Chris@1781:     // 2. (on non-Windows non-Mac platforms only) in
Chris@1781:     // <mydir>/../lib/application-name/
Chris@1781:     //
Chris@1781:     // 3. (on non-Mac platforms only) in <mydir>/helpers
Chris@1781:     //
Chris@1781:     // 4. in <mydir>
Chris@1694: 
Chris@1243:     QStringList dirs;
Chris@1781:     QString appName = QCoreApplication::applicationName();
Chris@1243:     QString myDir = QCoreApplication::applicationDirPath();
Chris@1783:     QString binaryName = QFileInfo(QCoreApplication::arguments().at(0))
Chris@1783:         .fileName();
Chris@1783:         
Chris@1694: #ifdef Q_OS_MAC
Chris@1694:     dirs.push_back(myDir + "/../Resources");
Chris@1694: #else
Chris@1781: #ifndef Q_OS_WIN32
Chris@1783:     if (binaryName != "") {
Chris@1783:         dirs.push_back(myDir + "/../lib/" + binaryName);
Chris@1783:     }
Chris@1781:     dirs.push_back(myDir + "/../lib/" + appName);
Chris@1781: #endif
Chris@1243:     dirs.push_back(myDir + "/helpers");
Chris@1694: #endif
Chris@1243:     dirs.push_back(myDir);
Chris@1243:     return dirs;
Chris@1243: }
Chris@1243: 
Chris@1243: QStringList
Chris@1243: HelperExecPath::getHelperCandidatePaths(QString basename)
Chris@1243: {
Chris@1243:     QStringList candidates;
Chris@1243:     (void)search(basename, candidates);
Chris@1243:     return candidates;
Chris@1243: }
Chris@1243: 
Chris@1246: QList<HelperExecPath::HelperExec>
Chris@1243: HelperExecPath::search(QString basename, QStringList &candidates)
Chris@1243: {
Chris@1243:     QString extension = "";
Chris@1243: #ifdef _WIN32
Chris@1243:     extension = ".exe";
Chris@1243: #endif
Chris@1243: 
Chris@1246:     QList<HelperExec> executables;
Chris@1243:     QStringList dirs = getHelperDirPaths();
Chris@1243:     
Chris@1246:     for (QString t: getTags()) {
Chris@1243:         for (QString d: dirs) {
Chris@1246:             QString path = d + QDir::separator() + basename;
Chris@1246:             if (t != QString()) path += "-" + t;
Chris@1246:             path += extension;
Chris@1243:             candidates.push_back(path);
Chris@1243:             if (isGood(path)) {
Chris@1246:                 executables.push_back({ path, t });
Chris@1243:                 break;
Chris@1243:             }
Chris@1243:         }
Chris@1243:     }
Chris@1243: 
Chris@1243:     return executables;
Chris@1243: }
Chris@1243: