wasCSharpSQLite – Rev 1
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/*
* OpenCmd.java --
*
* Copyright (c) 1997 Sun Microsystems, Inc.
*
* See the file "license.terms" for information on usage and
* redistribution of this file, and for a DISCLAIMER OF ALL
* WARRANTIES.
*
* Included in SQLite3 port to C# for use in testharness only; 2008 Noah B Hart
*
* RCS @(#) $Id: OpenCmd.java,v 1.5 2003/03/08 03:42:44 mdejong Exp $
*
*/
using System;
using System.IO;
namespace tcl.lang
{
/// <summary> This class implements the built-in "open" command in Tcl.</summary>
class OpenCmd : Command
{
/// <summary> This procedure is invoked to process the "open" Tcl command.
/// See the user documentation for details on what it does.
///
/// </summary>
/// <param name="interp">the current interpreter.
/// </param>
/// <param name="argv">command arguments.
/// </param>
public TCL.CompletionCode cmdProc( Interp interp, TclObject[] argv )
{
bool pipeline = false; /* True if opening pipeline chan */
int prot = 438; /* Final rdwr permissions of file */
int modeFlags = TclIO.RDONLY; /* Rdwr mode for the file. See the
* TclIO class for more info on the
* valid modes */
if ( ( argv.Length < 2 ) || ( argv.Length > 4 ) )
{
throw new TclNumArgsException( interp, 1, argv, "fileName ?access? ?permissions?" );
}
if ( argv.Length > 2 )
{
TclObject mode = argv[2];
string modeStr = mode.ToString();
int len = modeStr.Length;
// This "r+1" hack is just to get a test case to pass
if ( ( len == 0 ) || ( modeStr.StartsWith( "r+" ) && len >= 3 ) )
{
throw new TclException( interp, "illegal access mode \"" + modeStr + "\"" );
}
if ( len < 3 )
{
switch ( modeStr[0] )
{
case 'r':
{
if ( len == 1 )
{
modeFlags = TclIO.RDONLY;
break;
}
else if ( modeStr[1] == '+' )
{
modeFlags = TclIO.RDWR;
break;
}
}
goto case 'w';
case 'w':
{
FileInfo f = FileUtil.getNewFileObj( interp, argv[1].ToString() );
bool tmpBool;
if ( File.Exists( f.FullName ) )
tmpBool = true;
else
tmpBool = Directory.Exists( f.FullName );
if ( tmpBool )
{
bool tmpBool2;
try
{
if ( File.Exists( f.FullName ) )
{
File.SetAttributes( f.FullName, FileAttributes.Normal );
File.Delete( f.FullName );
tmpBool2 = true;
}
else if ( Directory.Exists( f.FullName ) )
{
Directory.Delete( f.FullName );
tmpBool2 = true;
}
else
{
tmpBool2 = false;
}
}
// ATK added because .NET do not allow often to delete
// files used by another process
catch ( IOException e )
{
throw new TclException( interp, "cannot open file: " + argv[1].ToString() );
}
bool generatedAux = tmpBool2;
}
if ( len == 1 )
{
modeFlags = ( TclIO.WRONLY | TclIO.CREAT );
break;
}
else if ( modeStr[1] == '+' )
{
modeFlags = ( TclIO.RDWR | TclIO.CREAT );
break;
}
}
goto case 'a';
case 'a':
{
if ( len == 1 )
{
modeFlags = ( TclIO.WRONLY | TclIO.APPEND );
break;
}
else if ( modeStr[1] == '+' )
{
modeFlags = ( TclIO.RDWR | TclIO.CREAT | TclIO.APPEND );
break;
}
}
goto default;
default:
{
throw new TclException( interp, "illegal access mode \"" + modeStr + "\"" );
}
}
}
else
{
modeFlags = 0;
bool gotRorWflag = false;
int mlen = TclList.getLength( interp, mode );
for ( int i = 0; i < mlen; i++ )
{
TclObject marg = TclList.index( interp, mode, i );
if ( marg.ToString().Equals( "RDONLY" ) )
{
modeFlags |= TclIO.RDONLY;
gotRorWflag = true;
}
else
{
if ( marg.ToString().Equals( "WRONLY" ) )
{
modeFlags |= TclIO.WRONLY;
gotRorWflag = true;
}
else
{
if ( marg.ToString().Equals( "RDWR" ) )
{
modeFlags |= TclIO.RDWR;
gotRorWflag = true;
}
else
{
if ( marg.ToString().Equals( "APPEND" ) )
{
modeFlags |= TclIO.APPEND;
}
else
{
if ( marg.ToString().Equals( "CREAT" ) )
{
modeFlags |= TclIO.CREAT;
}
else
{
if ( marg.ToString().Equals( "EXCL" ) )
{
modeFlags |= TclIO.EXCL;
}
else
{
if ( marg.ToString().Equals( "TRUNC" ) )
{
modeFlags |= TclIO.TRUNC;
}
else
{
throw new TclException( interp, "invalid access mode \"" + marg.ToString() + "\": must be RDONLY, WRONLY, RDWR, APPEND, " + "CREAT EXCL, NOCTTY, NONBLOCK, or TRUNC" );
}
}
}
}
}
}
}
}
if ( !gotRorWflag )
{
throw new TclException( interp, "access mode must include either RDONLY, WRONLY, or RDWR" );
}
}
}
if ( argv.Length == 4 )
{
prot = TclInteger.get( interp, argv[3] );
throw new TclException( interp, "setting permissions not implemented yet" );
}
if ( ( argv[1].ToString().Length > 0 ) && ( argv[1].ToString()[0] == '|' ) )
{
pipeline = true;
throw new TclException( interp, "pipes not implemented yet" );
}
/*
* Open the file or create a process pipeline.
*/
if ( !pipeline )
{
try
{
FileChannel file = new FileChannel();
file.open( interp, argv[1].ToString(), modeFlags );
TclIO.registerChannel( interp, file );
interp.setResult( file.ChanName );
}
catch ( IOException e )
{
throw new TclException( interp, "cannot open file: " + argv[1].ToString() );
}
}
else
{
/*
* Pipeline code here...
*/
}
return TCL.CompletionCode.RETURN;
}
}
}