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108 lines
2.8 KiB
ObjectPascal
108 lines
2.8 KiB
ObjectPascal
unit FileReader;
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{(*}
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(*------------------------------------------------------------------------------
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Delphi Code formatter source code
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The Original Code is FileReader.pas, released April 2000.
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The Initial Developer of the Original Code is Anthony Steele.
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Portions created by Anthony Steele are Copyright (C) 1999-2000 Anthony Steele.
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All Rights Reserved.
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Contributor(s): Anthony Steele.
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The contents of this file are subject to the Mozilla Public License Version 1.1
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(the "License"). you may not use this file except in compliance with the License.
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You may obtain a copy of the License at http://www.mozilla.org/NPL/
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Software distributed under the License is distributed on an "AS IS" basis,
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WITHOUT WARRANTY OF ANY KIND, either express or implied.
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See the License for the specific language governing rights and limitations
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under the License.
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Alternatively, the contents of this file may be used under the terms of
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the GNU General Public License Version 2 or later (the "GPL")
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See http://www.gnu.org/licenses/gpl.html
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------------------------------------------------------------------------------*)
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{*)}
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{ Created AFS 27 November 1999
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reader for Code formatting util
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The method is to first read the entire file into a string
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This is a textbook optimization - 1 read for the whole file
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instead of 1 per char. The file may be large
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(the largest file that ships with Delphi5, excel2000.pas, is 4Mb!!!!)
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but even this should fit into memory
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This technique is not optimised for files of that size,
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but hey, that is not the normal case,
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and code like that has got to be machine-generated anyway.
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Why would it need machine-reformatting?
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8 Jan 2K - the original code is now split into
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TReader (base class) and TFileReader (read from file
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so that another subclass (TIDEReader) can be made for the IDE pluggin
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with the same interface
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}
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{$I JcfGlobal.inc}
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interface
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uses CodeReader;
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type
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TFileReader = class(TCodeReader)
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private
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{ working vars }
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{ property implementation }
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FsSourceFileName: string;
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procedure SetSourceFileName(const psValue: string);
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protected
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procedure ReadFromSource; override;
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public
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procedure Clear; override;
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property SourceFileName: string Read FsSourceFileName Write SetSourceFileName;
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end;
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implementation
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uses
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{delphi }SysUtils,
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JclAnsiStrings;
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{ TFileReader }
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procedure TFileReader.Clear;
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begin
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inherited;
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FsSourceFileName := '';
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end;
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procedure TFileReader.SetSourceFileName(const psValue: string);
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begin
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FsSourceFileName := psValue;
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end;
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procedure TFileReader.ReadFromSource;
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begin
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if fbHasRead then
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exit;
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// Open the file
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Assert(FileExists(SourceFileName), 'No file ' + SourceFileName);
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fsSource := FileToString(SourceFileName);
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fiSourceLength := Length(fsSource);
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fiReadIndex := 1;
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fiBufferLength := 1;
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fbHasRead := True;
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end;
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end.
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