args.h

/*  wcecompat: Windows CE C Runtime Library "compatibility" library.
 *
 *  Copyright (C) 2001-2002 Essemer Pty Ltd.  All rights reserved.
 *  http://www.essemer.com.au/
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 of the License, or (at your option) any later version.
 *
 *  This library 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
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */


#ifndef __wcecompat__ARGS_H__
#define __wcecompat__ARGS_H__


#include <windows.h>


// generate argc/argv from program name and lpCmdLine
// returns 0 on failure, or argc on success
int processCmdLine(LPTSTR lpCmdLine, char*** pArgv);


enum RedirType {
        RT_NONE,
        RT_PIPE_UNSPEC,         // unspecified pipe (one of stdin, stdout, stderr, but unknown which it is)
        RT_PIPE_STDIN,
        RT_PIPE_STDOUT,         // 2>&1 >file (stderr is redirected to original stdout, stdout to file)
        RT_PIPE_STDERR,         // >&2 2>file (stdout is redirected to original stderr, stderr to file)
        RT_HANDLE,                      // >file 2>&1 (stdout is redirected to file, stderr to same file via stdout)
        RT_FILE,                        // >file 2>file <file
};

typedef struct
{
        RedirType       redirType;
        int                     fd;                             // file descriptor being redirected
        int                     fd2;                    // file descriptor being redirected to/from (only valid if redirType==RT_HANDLE)
        TCHAR*          filename;               // filename associated with redirection (only valid if redirType==RT_FILE or PIPE_UNSP*)
        bool            append;                 // true if the file being redirected to should be appending to
        bool            openForRead;    // true if the file being redirected to/from should be opened for reading
        bool            openForWrite;   // true if the file being redirected to/from should be opened for writing
} RedirArg;

// get redirection arguments, ie. filenames that relate to redirection.
// NULL returned for redirections that aren't specified.
// Same filename may be returned for multiple redirections, such as for: >foo 2>&1
// The filename buffers must be free()'d.
bool getRedirArgs(LPTSTR lpCmdLine, RedirArg** redirArgs, int* numRedirArgs);

bool removeRedirArgs(LPTSTR lpCmdLine);


#endif // __wcecompat__ARGS_H__

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