PathTest.h

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/* Copyright (C) 2002 Carsten Griwodz
 *
 * You are allowed to use all other parts of the code under the following terms:
 *
 * For non-commercial use, this code may be used in unmodified form
 * provided that this copyright notice and this permission notice appear
 * in supporting documentation.
 *
 * The code may be made subject to the terms of the GNU General Public
 * License, Version 2, and re-distributed under the terms of this license.
 *
 * Commercial use other than under the terms of the GNU General Public
 * License is allowed only after negotiation of conditions with the authors.
 */
#ifndef OS_PATH_TEST_H
#define OS_PATH_TEST_H

#include <list>
#include "MNString.h"

using std::list;

class PathTest;

class AbsPath
{
public:
    enum Mode
    {
        Executable
    };

private:
    MNString  _filename;
    Mode      _mode;
    MNString  _abs_filename;
    PathTest* _path_test;
    bool      _found;

public:
    AbsPath( const char* filename,
             const char* execname,
             Mode        mode = Executable );
    void prependSearchDir( const char* dirname );
    void appendSearchDir( const char* dirname );

    bool exists( MNString& absfilename );
};

class PathTest
{
    MNString       _cwd;
    list<MNString> _searchpath;

public:
    PathTest( const char* execname, const char* env = "PATH" );
    void prependSearchDir( const char* dirname );
    void appendSearchDir( const char* dirname );
    bool find( MNString      filename,
               AbsPath::Mode mode,
               MNString&     absfilename );

private:
    MNString makeAbsolute( MNString in );
    bool     accessibleDir( const MNString& in );
    void     private_append( MNString in );
};

#endif /* OS_PATH_TEST_H */

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