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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
/*
Sonic Visualiser
An audio file viewer and annotation editor.
Centre for Digital Music, Queen Mary, University of London.
This file copyright 2006-2016 Chris Cannam and QMUL.
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. See the file
COPYING included with this distribution for more information.
*/
#ifndef SV_HELPER_EXEC_PATH_H
#define SV_HELPER_EXEC_PATH_H
#include <QStringList>
namespace sv {
/**
* Class to find helper executables that have been installed alongside
* the application. There may be more than one executable available
* with a given base name, because it's possible to have more than one
* implementation of a given service. For example, a plugin helper or
* scanner may exist in both 32-bit and 64-bit variants.
*
* This class encodes both the expected locations of helper
* executables, and the expected priority between different
* implementations (e.g. preferring the architecture that matches that
* of the host).
*/
class HelperExecPath
{
public:
enum SearchType {
NativeArchitectureOnly,
AllInstalled
};
HelperExecPath(SearchType type) : m_type(type) { }
/**
* Find a helper executable with the given base name in the bundle
* directory or installation location, if one exists, and return
* its full path. Equivalent to calling getHelperExecutables() and
* taking the first result from the returned list (or "" if empty).
*/
QString getHelperExecutable(QString basename);
struct HelperExec {
QString executable;
QString tag;
};
/**
* Find all helper executables with the given base name in the
* bundle directory or installation location, and return their
* full paths in order of priority. The "tag" string contains an
* identifier for the location or architecture of the helper, for
* example "32", "64", "js" etc. An empty tag signifies a default
* helper that matches the application's architecture.
*/
QList<HelperExec> getHelperExecutables(QString basename);
/**
* Return the list of directories searched for helper
* executables.
*/
QStringList getHelperDirPaths();
/**
* Return the list of executable paths examined in the search for
* the helper executable with the given basename.
*/
QStringList getHelperCandidatePaths(QString basename);
/**
* Return the list of directories searched for bundled plugins.
*/
QStringList getBundledPluginPaths();
private:
SearchType m_type;
QList<HelperExec> search(QString, QStringList &);
QStringList getTags();
};
} // end namespace sv
#endif
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