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unit RebreakLines;
{(*}
(*------------------------------------------------------------------------------
Delphi Code formatter source code
The Original Code is RebreakLines, released May 2003.
The Initial Developer of the Original Code is Anthony Steele.
Portions created by Anthony Steele are Copyright (C) 1999-2008 Anthony Steele.
All Rights Reserved.
Contributor(s): Anthony Steele.
The contents of this file are subject to the Mozilla Public License Version 1.1
(the "License"). you may not use this file except in compliance with the License.
You may obtain a copy of the License at http://www.mozilla.org/NPL/
Software distributed under the License is distributed on an "AS IS" basis,
WITHOUT WARRANTY OF ANY KIND, either express or implied.
See the License for the specific language governing rights and limitations
under the License.
Alternatively, the contents of this file may be used under the terms of
the GNU General Public License Version 2 or later (the "GPL")
See http://www.gnu.org/licenses/gpl.html
------------------------------------------------------------------------------*)
{*)}
{$I JcfGlobal.inc}
interface
{ AFS 29 December 2002
Obfuscate process
break lines at regular intervals
}
uses SwitchableVisitor;
type
TRebreakLines = class(TSwitchableVisitor)
private
xPos: integer;
protected
function EnabledVisitSourceToken(const pcNode: TObject): Boolean; override;
public
constructor Create; override;
end;
implementation
uses
JcfStringUtils, SourceToken, Tokens, FormatFlags, TokenUtils, ParseTreeNodeType;
function CanBreakHere(const pt: TSourceToken): boolean;
var
lbInString: Boolean;
lcNext: TSourceToken;
begin
lbInString := pt.HasParentNode(nLiteralString);
if lbInString then
begin
lcNext := pt.NextToken;
lbInString := (lcNext <> nil) and lcNext.HasParentNode(nLiteralString);
end;
Result := not lbInString;
end;
constructor TRebreakLines.Create;
begin
inherited;
FormatFlags := FormatFlags + [eObfuscate];
xPos := 1;
end;
function TRebreakLines.EnabledVisitSourceToken(const pcNode: TObject): Boolean;
const
LINE_LENGTH = 80;
var
lcToken: TSourceToken;
lcNext, lcNew: TSourceToken;
liLen: integer;
begin
Result := False;
lcToken := TSourceToken(pcNode);
if lcToken.TokenType = ttReturn then
begin
xPos := 0
end
else
begin
liLen := Length(lcToken.SourceCode);
if ((XPos + liLen) > LINE_LENGTH) and CanBreakHere(lcToken) then
begin
{ no space directly after the new return }
lcNext := lcToken.NextToken;
if (lcNext <> nil) and (lcNext.TokenType = ttWhiteSpace) and
(lcNext.SourceCode <> '') then
BlankToken(lcNext);
{ need a return? }
if (lcNext <> nil) and (lcNext.TokenType <> ttReturn) then
begin
lcNew := TSourceToken.Create;
lcNew.TokenType := ttReturn;
lcNew.SourceCode := NativeLineBreak;
XPos := 0;
InsertTokenAfter(lcToken, lcNew);
end;
end
else
// not at enhd of line yet
xPos := xPos + liLen;
end;
end;
end.
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