wasCSharpSQLite – Blame information for rev 1
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| Rev | Author | Line No. | Line |
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| 1 | office | 1 | /* |
| 2 | * GetsCmd.java -- |
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| 3 | * |
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| 4 | * Copyright (c) 1997 Sun Microsystems, Inc. |
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| 5 | * |
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| 6 | * See the file "license.terms" for information on usage and |
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| 7 | * redistribution of this file, and for a DISCLAIMER OF ALL |
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| 8 | * WARRANTIES. |
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| 9 | * |
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| 10 | * Included in SQLite3 port to C# for use in testharness only; 2008 Noah B Hart |
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| 11 | * |
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| 12 | * RCS @(#) $Id: GetsCmd.java,v 1.6 2003/03/08 03:42:44 mdejong Exp $ |
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| 13 | * |
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| 14 | */ |
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| 15 | using System.Text; |
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| 16 | using System.IO; |
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| 17 | namespace tcl.lang |
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| 18 | { |
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| 19 | |||
| 20 | /// <summary> This class implements the built-in "gets" command in Tcl.</summary> |
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| 21 | |||
| 22 | class GetsCmd : Command |
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| 23 | { |
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| 24 | |||
| 25 | /// <summary> This procedure is invoked to process the "gets" Tcl command. |
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| 26 | /// See the user documentation for details on what it does. |
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| 27 | /// |
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| 28 | /// </summary> |
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| 29 | /// <param name="interp">the current interpreter. |
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| 30 | /// </param> |
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| 31 | /// <param name="argv">command arguments. |
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| 32 | /// </param> |
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| 33 | |||
| 34 | public TCL.CompletionCode cmdProc( Interp interp, TclObject[] argv ) |
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| 35 | { |
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| 36 | |||
| 37 | bool writeToVar = false; // If true write to var passes as arg |
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| 38 | string varName = ""; // The variable to write value to |
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| 39 | Channel chan; // The channel being operated on |
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| 40 | int lineLen; |
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| 41 | TclObject line; |
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| 42 | |||
| 43 | if ( ( argv.Length < 2 ) || ( argv.Length > 3 ) ) |
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| 44 | { |
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| 45 | throw new TclNumArgsException( interp, 1, argv, "channelId ?varName?" ); |
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| 46 | } |
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| 47 | |||
| 48 | if ( argv.Length == 3 ) |
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| 49 | { |
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| 50 | writeToVar = true; |
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| 51 | |||
| 52 | varName = argv[2].ToString(); |
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| 53 | } |
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| 54 | |||
| 55 | |||
| 56 | chan = TclIO.getChannel( interp, argv[1].ToString() ); |
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| 57 | if ( chan == null ) |
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| 58 | { |
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| 59 | |||
| 60 | throw new TclException( interp, "can not find channel named \"" + argv[1].ToString() + "\"" ); |
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| 61 | } |
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| 62 | |||
| 63 | try |
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| 64 | { |
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| 65 | line = TclString.newInstance( new StringBuilder( 64 ) ); |
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| 66 | lineLen = chan.read( interp, line, TclIO.READ_LINE, 0 ); |
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| 67 | if ( lineLen < 0 ) |
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| 68 | { |
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| 69 | // FIXME: Need more specific posix error codes! |
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| 70 | if ( !chan.eof() && !chan.isBlocked( interp ) ) |
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| 71 | { |
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| 72 | |||
| 73 | throw new TclPosixException( interp, TclPosixException.EIO, true, "error reading \"" + argv[1].ToString() + "\"" ); |
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| 74 | } |
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| 75 | lineLen = -1; |
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| 76 | } |
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| 77 | if ( writeToVar ) |
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| 78 | { |
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| 79 | interp.setVar( varName, line, 0 ); |
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| 80 | interp.setResult( lineLen ); |
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| 81 | } |
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| 82 | else |
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| 83 | { |
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| 84 | interp.setResult( line ); |
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| 85 | } |
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| 86 | } |
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| 87 | catch ( IOException e ) |
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| 88 | { |
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| 89 | throw new TclRuntimeError( "GetsCmd.cmdProc() Error: IOException when getting " + chan.ChanName + ": " + e.Message ); |
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| 90 | } |
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| 91 | return TCL.CompletionCode.RETURN; |
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| 92 | } |
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| 93 | } |
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| 94 | } |