filespecwin.h

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/* ***** BEGIN LICENSE BLOCK *****
 * Source last modified: $Id: filespecwin.h,v 1.1.1.1.50.3 2004/07/09 01:44:42 hubbe Exp $
 * 
 * Portions Copyright (c) 1995-2004 RealNetworks, Inc. All Rights Reserved.
 * 
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 * the file under the current version of the RealNetworks Community
 * Source License (the "RCSL") available at
 * http://www.helixcommunity.org/content/rcsl, in which case the RCSL
 * will apply. You may also obtain the license terms directly from
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 * to this file, the RCSL.  Please see the applicable RPSL or RCSL for
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 * This file is part of the Helix DNA Technology. RealNetworks is the
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 * ***** END LICENSE BLOCK ***** */

#ifndef FILESPECWIN_H
#define FILESPECWIN_H

#include "hxstring.h"

class CHXFileSpecifier;
class CHXDirSpecifier;

// this utility class helps out the two classes below.  It breaks a path up into these components:
//
//  C:/dir1/dir2/dir3/file.ext
//  ^ ^              ^^   ^^
//
// Each arrow above points to the start of a component.  The components are:
//
// volume
// parent [path]
// separator [note: this may be more than one character, for instance:  c:/dir1////file1.txt, which is equivalent to c:/dir1/file1.txt]
// name [for a file, the filename, for a directory, the directory name
// extension separator [I think this is always a single '.']
// extension [note that even directories may have extensions].
//
// Here are some special cases that are handled:
//
// /dir1/dir2/  -- a path with no volume, and trailing slash.
//
//     volume: ""
//     parent: "/dir1"
//     separator: "/"
//     name: "dir2"
//     extension separator: ""
//     extension: ""
//
// \\hostname\drive_1\dev\file1.
//
//     volume: "\\hostname"
//     parent: "\drive_1\dev"
//     separator: "\"
//     name: "file1"
//     extension separator: "."
//     extension: ""
//
// C:bogus.txt -- relative path, no directory
//
//     volume: "C:"
//     parent: ""
//     separator: ""
//     name: "bogus"
//     extension separator: "."
//     extension: "txt"
//
// 


class CHXPathParser
{
    friend class CHXFileSpecifier;
    friend class CHXDirSpecifier;

private:
    CHXPathParser();

    CHXString GetPathName() const;
    BOOL IsSet() const;
	void UnSet();

    CHXPathParser &operator=(const CHXPathParser &other);
    BOOL operator==(const CHXPathParser &other);
    BOOL operator!=(const CHXPathParser &other);

    void ParsePath(const char *psz);

    CHXString GetSubstring(int nStart, int nLength) const;

    CHXString GetPersistentString() const;
    void SetFromPersistentString(const char *pBuffer);



    CHXString m_path;
    BOOL m_bEmpty;

    BOOL m_bIsValid;
    BOOL m_bCannotBeFile;
    BOOL m_bAbsolute;

    int m_nVolumeLength;
    int m_nParentLength;
    int m_nSeparatorLength;
    int m_nNameLength;
    int m_nExtensionSeparatorLength;
    int m_nExtensionLength;
};

#endif // FILESPECWIN_H