Make factory samples relative (LMMS#3510)

* Make factory samples relative
Fixes LMMS#3491
Related LMMS#1719

src/core/ConfigManager.cpp

@@ -63,7 +63,12 @@ ConfigManager::ConfigManager() :
 
 	// If we're in development (lmms is not installed) let's get the source and
 	// binary directories by reading the CMake Cache
-	QFile cmakeCache(qApp->applicationDirPath() + "/CMakeCache.txt");
+	QDir appPath = qApp->applicationDirPath();
+	// If in tests, get parent directory
+	if (appPath.dirName() == "tests") {
+		appPath.cdUp();
+	}
+	QFile cmakeCache(appPath.absoluteFilePath("CMakeCache.txt"));
 	if (cmakeCache.exists()) {
 		cmakeCache.open(QFile::ReadOnly);
 		QTextStream stream(&cmakeCache);

src/core/SampleBuffer.cpp

@@ -1411,25 +1411,35 @@ void SampleBuffer::setReversed( bool _on )
 
 
 
-QString SampleBuffer::tryToMakeRelative( const QString & _file )
+QString SampleBuffer::tryToMakeRelative( const QString & file )
 {
-	if( QFileInfo( _file ).isRelative() == false )
+	if( QFileInfo( file ).isRelative() == false )
 	{
-		QString f = QString( _file ).replace( QDir::separator(), '/' );
-		QString fsd = ConfigManager::inst()->factorySamplesDir();
-		QString usd = ConfigManager::inst()->userSamplesDir();
-		fsd.replace( QDir::separator(), '/' );
-		usd.replace( QDir::separator(), '/' );
-		if( f.startsWith( fsd ) )
+		QString f = QString( file ).replace( QDir::separator(), '/' );
+
+		// First, look in factory samples
+		// Isolate "samples/" from "data:/samples/"
+		QString samplesSuffix = ConfigManager::inst()->factorySamplesDir().mid( ConfigManager::inst()->dataDir().length() );
+
+		// Iterate over all valid "data:/" searchPaths
+		for ( const QString & path : QDir::searchPaths( "data" ) )
 		{
-			return QString( f ).mid( fsd.length() );
+			QString samplesPath = QString( path + samplesSuffix ).replace( QDir::separator(), '/' );
+			if ( f.startsWith( samplesPath ) )
+			{
+				return QString( f ).mid( samplesPath.length() );
+			}
 		}
-		else if( f.startsWith( usd ) )
+
+		// Next, look in user samples
+		QString usd = ConfigManager::inst()->userSamplesDir();
+		usd.replace( QDir::separator(), '/' );
+		if( f.startsWith( usd ) )
 		{
 			return QString( f ).mid( usd.length() );
 		}
 	}
-	return _file;
+	return file;
 }
 
 

tests/CMakeLists.txt

@@ -19,6 +19,7 @@ ADD_EXECUTABLE(tests
 	$<TARGET_OBJECTS:lmmsobjs>
 
 	src/core/ProjectVersionTest.cpp
+	src/core/RelativePathsTest.cpp
 
 	src/tracks/AutomationTrackTest.cpp
 )

tests/src/core/RelativePathsTest.cpp

@@ -0,0 +1,48 @@
+/*
+ * RelativePathsTest.cpp
+ *
+ * Copyright (c) 2017 Tres Finocchiaro <tres/dot/finocchiaro/at/gmail.com>
+ *
+ * This file is part of LMMS - https://lmms.io
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This program 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program (see COPYING); if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA.
+ *
+ */
+
+#include "QTestSuite.h"
+
+#include "ConfigManager.h"
+#include "SampleBuffer.h"
+
+#include <QDir>
+
+class RelativePathsTest : QTestSuite
+{
+	Q_OBJECT
+private slots:
+	void RelativePathComparisonTests()
+	{
+		QFileInfo fi(ConfigManager::inst()->factorySamplesDir() + "/drums/kick01.ogg");
+		QVERIFY(fi.exists());
+
+		QString absPath = fi.absoluteFilePath();
+		QString relPath = "drums/kick01.ogg";
+		QCOMPARE(SampleBuffer::tryToMakeRelative(absPath), relPath);
+		QCOMPARE(SampleBuffer::tryToMakeAbsolute(relPath), absPath);
+	}
+} RelativePathTests;
+
+#include "RelativePathsTest.moc"