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JUCE/src/audio/plugin_host/juce_PluginDirectoryScanner.cpp

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C++

/*
==============================================================================
This file is part of the JUCE library - "Jules' Utility Class Extensions"
Copyright 2004-11 by Raw Material Software Ltd.
------------------------------------------------------------------------------
JUCE can be redistributed and/or modified under the terms of the GNU General
Public License (Version 2), as published by the Free Software Foundation.
A copy of the license is included in the JUCE distribution, or can be found
online at www.gnu.org/licenses.
JUCE 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.
------------------------------------------------------------------------------
To release a closed-source product which uses JUCE, commercial licenses are
available: visit www.rawmaterialsoftware.com/juce for more information.
==============================================================================
*/
#include "../../core/juce_StandardHeader.h"
BEGIN_JUCE_NAMESPACE
#include "juce_PluginDirectoryScanner.h"
#include "juce_AudioPluginFormat.h"
#include "../../io/files/juce_DirectoryIterator.h"
//==============================================================================
PluginDirectoryScanner::PluginDirectoryScanner (KnownPluginList& listToAddTo,
AudioPluginFormat& formatToLookFor,
FileSearchPath directoriesToSearch,
const bool recursive,
const File& deadMansPedalFile_)
: list (listToAddTo),
format (formatToLookFor),
deadMansPedalFile (deadMansPedalFile_),
nextIndex (0),
progress (0)
{
directoriesToSearch.removeRedundantPaths();
filesOrIdentifiersToScan = format.searchPathsForPlugins (directoriesToSearch, recursive);
// If any plugins have crashed recently when being loaded, move them to the
// end of the list to give the others a chance to load correctly..
const StringArray crashedPlugins (getDeadMansPedalFile());
for (int i = 0; i < crashedPlugins.size(); ++i)
{
const String f = crashedPlugins[i];
for (int j = filesOrIdentifiersToScan.size(); --j >= 0;)
if (f == filesOrIdentifiersToScan[j])
filesOrIdentifiersToScan.move (j, -1);
}
}
PluginDirectoryScanner::~PluginDirectoryScanner()
{
}
//==============================================================================
const String PluginDirectoryScanner::getNextPluginFileThatWillBeScanned() const
{
return format.getNameOfPluginFromIdentifier (filesOrIdentifiersToScan [nextIndex]);
}
bool PluginDirectoryScanner::scanNextFile (const bool dontRescanIfAlreadyInList)
{
String file (filesOrIdentifiersToScan [nextIndex]);
if (file.isNotEmpty() && ! list.isListingUpToDate (file))
{
OwnedArray <PluginDescription> typesFound;
// Add this plugin to the end of the dead-man's pedal list in case it crashes...
StringArray crashedPlugins (getDeadMansPedalFile());
crashedPlugins.removeString (file);
crashedPlugins.add (file);
setDeadMansPedalFile (crashedPlugins);
list.scanAndAddFile (file,
dontRescanIfAlreadyInList,
typesFound,
format);
// Managed to load without crashing, so remove it from the dead-man's-pedal..
crashedPlugins.removeString (file);
setDeadMansPedalFile (crashedPlugins);
if (typesFound.size() == 0)
failedFiles.add (file);
}
return skipNextFile();
}
bool PluginDirectoryScanner::skipNextFile()
{
if (nextIndex >= filesOrIdentifiersToScan.size())
return false;
progress = ++nextIndex / (float) filesOrIdentifiersToScan.size();
return nextIndex < filesOrIdentifiersToScan.size();
}
StringArray PluginDirectoryScanner::getDeadMansPedalFile()
{
StringArray lines;
if (deadMansPedalFile != File::nonexistent)
{
lines.addLines (deadMansPedalFile.loadFileAsString());
lines.removeEmptyStrings();
}
return lines;
}
void PluginDirectoryScanner::setDeadMansPedalFile (const StringArray& newContents)
{
if (deadMansPedalFile != File::nonexistent)
deadMansPedalFile.replaceWithText (newContents.joinIntoString ("\n"), true, true);
}
END_JUCE_NAMESPACE