paweld/lazarus
1
0
Fork 0
mirror of https://gitlab.com/freepascal.org/lazarus/lazarus.git synced 2025-05-04 01:03:44 +02:00
Code Issues Packages Projects Releases Wiki Activity
bcf68cee11
lazarus/components/codetools/basiccodetools.pas
mattias bcf68cee11 implemented adding Application.Title:= statements 
git-svn-id: trunk@5334 -
2004-03-20 12:55:48 +00:00

2999 lines
87 KiB
ObjectPascal
Raw Blame History

{
***************************************************************************
* *
* This source is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This code 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 *
* General Public License for more details. *
* *
* A copy of the GNU General Public License is available on the World *
* Wide Web at <http://www.gnu.org/copyleft/gpl.html>. You can also *
* obtain it by writing to the Free Software Foundation, *
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
* *
***************************************************************************
Author: Mattias Gaertner
Abstract:
Basic pascal code functions. Many of the functions have counterparts in the
code tools, which are faster, more flexible and aware of compiler settings
and directives.
}
unit BasicCodeTools;
{$ifdef FPC}{$mode objfpc}{$endif}{$H+}
interface
uses
Classes, SysUtils, CodeToolsStrConsts, SourceLog, KeywordFuncLists;
//----------------------------------------------------------------------------
{ These functions are used by the codetools
}
// comments
function FindNextNonSpace(const ASource: string; StartPos: integer
): integer;
function FindCommentEnd(const ASource: string; StartPos: integer;
NestedComments: boolean): integer;
function FindNextCompilerDirective(const ASource: string; StartPos: integer;
NestedComments: boolean): integer;
function FindNextCompilerDirectiveWithName(const ASource: string;
StartPos: integer; const DirectiveName: string;
NestedComments: boolean; var ParamPos: integer): integer;
function FindNextIDEDirective(const ASource: string; StartPos: integer;
NestedComments: boolean): integer;
function CleanCodeFromComments(const DirtyCode: string;
NestedComments: boolean): string;
// indent
procedure GetLineStartEndAtPosition(const Source:string; Position:integer;
var LineStart,LineEnd:integer);
function GetLineIndent(const Source: string; Position: integer): integer;
function GetBlockMinIndent(const Source: string;
StartPos, EndPos: integer): integer;
function GetIndentStr(Indent: integer): string;
procedure IndentText(const Source: string; Indent, TabWidth: integer;
var NewSource: string);
// identifiers
procedure GetIdentStartEndAtPosition(const Source:string; Position:integer;
var IdentStart,IdentEnd:integer);
function GetIdentLen(Identifier: PChar): integer;
function GetIdentifier(Identifier: PChar): string;
function FindNextIdentifier(const Source: string; StartPos, MaxPos: integer
): integer;
// line/code ends
function LineEndCount(const Txt: string): integer;
function LineEndCount(const Txt: string; var LengthOfLastLine:integer): integer;
function EmptyCodeLineCount(const Source: string; StartPos, EndPos: integer;
NestedComments: boolean): integer;
function PositionsInSameLine(const Source: string;
Pos1, Pos2: integer): boolean;
function FindFirstNonSpaceCharInLine(const Source: string;
Position: integer): integer;
function FindLineEndOrCodeInFrontOfPosition(const Source: string;
Position, MinPosition: integer; NestedComments: boolean;
StopAtDirectives: boolean): integer;
function FindLineEndOrCodeAfterPosition(const Source: string;
Position, MaxPosition: integer; NestedComments: boolean): integer;
function FindFirstLineEndInFrontOfInCode(const Source: string;
Position, MinPosition: integer; NestedComments: boolean): integer;
function FindFirstLineEndAfterInCode(const Source: string;
Position, MaxPosition: integer; NestedComments: boolean): integer;
function ChompLineEndsAtEnd(const s: string): string;
function TrimLineEnds(const s: string; TrimStart, TrimEnd: boolean): string;
// brackets
function GetBracketLvl(const Src: string; StartPos, EndPos: integer;
NestedComments: boolean): integer;
// replacements
function ReplacementNeedsLineEnd(const Source: string;
FromPos, ToPos, NewLength, MaxLineLength: integer): boolean;
function CountNeededLineEndsToAddForward(const Src: string;
StartPos, MinLineEnds: integer): integer;
function CountNeededLineEndsToAddBackward(const Src: string;
StartPos, MinLineEnds: integer): integer;
// comparison
function CompareText(Txt1: PChar; Len1: integer; Txt2: PChar; Len2: integer;
CaseSensitive: boolean): integer;
function CompareText(Txt1: PChar; Len1: integer; Txt2: PChar; Len2: integer;
CaseSensitive, IgnoreSpace: boolean): integer;
function CompareTextIgnoringSpace(const Txt1, Txt2: string;
CaseSensitive: boolean): integer;
function CompareTextIgnoringSpace(Txt1: PChar; Len1: integer;
Txt2: PChar; Len2: integer; CaseSensitive: boolean): integer;
function CompareSubStrings(const Find, Txt: string;
FindStartPos, TxtStartPos, Len: integer; CaseSensitive: boolean): integer;
function CompareIdentifiers(Identifier1, Identifier2: PChar): integer;
function ComparePrefixIdent(PrefixIdent, Identifier: PChar): boolean;
// space and special chars
function TrimCodeSpace(const ACode: string): string;
function CodeIsOnlySpace(const ACode: string; FromPos, ToPos: integer): boolean;
function StringToPascalConst(const s: string): string;
// string constants
function SplitStringConstant(const StringConstant: string;
FirstLineLength, OtherLineLengths, Indent: integer;
const NewLine: string): string;
// other useful stuff
procedure RaiseCatchableException(const Msg: string);
//-----------------------------------------------------------------------------
// functions / procedures
{ These functions are not context sensitive. Especially they ignore compiler
settings and compiler directives. They exist only for basic usage.
}
// source type
function FindSourceType(const Source: string;
var SrcNameStart, SrcNameEnd: integer): string;
// program name
function RenameProgramInSource(Source:TSourceLog;
const NewProgramName:string):boolean;
function FindProgramNameInSource(const Source:string;
var ProgramNameStart,ProgramNameEnd:integer):string;
// unit name
function RenameUnitInSource(Source:TSourceLog;const NewUnitName:string):boolean;
function FindUnitNameInSource(const Source:string;
var UnitNameStart,UnitNameEnd:integer):string;
// uses sections
function UnitIsUsedInSource(const Source,UnitName:string):boolean;
function RenameUnitInProgramUsesSection(Source:TSourceLog;
const OldUnitName, NewUnitName, NewInFile:string): boolean;
function AddToProgramUsesSection(Source:TSourceLog;
const AUnitName,InFileName:string):boolean;
function RemoveFromProgramUsesSection(Source:TSourceLog;
const AUnitName:string):boolean;
function RenameUnitInInterfaceUsesSection(Source:TSourceLog;
const OldUnitName, NewUnitName, NewInFile:string): boolean;
function AddToInterfaceUsesSection(Source:TSourceLog;
const AUnitName,InFileName:string):boolean;
function RemoveFromInterfaceUsesSection(Source:TSourceLog;
const AUnitName:string):boolean;
// single uses section
function IsUnitUsedInUsesSection(const Source,UnitName:string;
UsesStart:integer):boolean;
function RenameUnitInUsesSection(Source:TSourceLog; UsesStart: integer;
const OldUnitName, NewUnitName, NewInFile:string): boolean;
function AddUnitToUsesSection(Source:TSourceLog;
const UnitName,InFilename:string; UsesStart:integer):boolean;
function RemoveUnitFromUsesSection(Source:TSourceLog;
const UnitName:string; UsesStart:integer):boolean;
// compiler directives
function FindIncludeDirective(const Source,Section:string; Index:integer;
var IncludeStart,IncludeEnd:integer):boolean;
function SplitCompilerDirective(const Directive:string;
var DirectiveName,Parameters:string):boolean;
// createform
function AddCreateFormToProgram(Source:TSourceLog;
const AClassName,AName:string):boolean;
function RemoveCreateFormFromProgram(Source:TSourceLog;
const AClassName,AName:string):boolean;
function CreateFormExistsInProgram(const Source,
AClassName,AName:string):boolean;
function ListAllCreateFormsInProgram(const Source:string):TStrings;
// resource code
function FindResourceInCode(const Source, AddCode:string;
var Position,EndPosition:integer):boolean;
function AddResourceCode(Source:TSourceLog; const AddCode:string):boolean;
// form components
function FindFormClassDefinitionInSource(const Source, FormClassName:string;
var FormClassNameStartPos, FormBodyStartPos: integer):boolean;
function FindFormComponentInSource(const Source: string;
FormBodyStartPos: integer;
const ComponentName, ComponentClassName: string): integer;
function AddFormComponentToSource(Source:TSourceLog; FormBodyStartPos: integer;
const ComponentName, ComponentClassName: string): boolean;
function RemoveFormComponentFromSource(Source:TSourceLog;
FormBodyStartPos: integer;
ComponentName, ComponentClassName: string): boolean;
function FindClassAncestorName(const Source, FormClassName: string): string;
// code search
function SearchCodeInSource(const Source, Find: string; StartPos:integer;
var EndFoundPosition: integer; CaseSensitive: boolean):integer;
function ReadNextPascalAtom(const Source: string;
var Position, AtomStart: integer): string;
procedure ReadRawNextPascalAtom(const Source: string;
var Position, AtomStart: integer);
//-----------------------------------------------------------------------------
const
MaxLineLength: integer = 80;
//=============================================================================
implementation
var
IsIDChar, // ['a'..'z','A'..'Z','0'..'9','_']
IsIDStartChar, // ['a'..'z','A'..'Z','_']
IsSpaceChar,
IsNumberChar,
IsHexNumberChar
: array[char] of boolean;
function Min(i1, i2: integer): integer;
begin
if i1<i2 then Result:=i1 else Result:=i2;
end;
function Max(i1, i2: integer): integer;
begin
if i1>i2 then Result:=i1 else Result:=i2;
end;
{ most simple code tools - just methods }
function FindIncludeDirective(const Source,Section:string; Index:integer;
var IncludeStart,IncludeEnd:integer):boolean;
var Atom,DirectiveName:string;
Position,EndPos,AtomStart:integer;
Filename:string;
begin
Result:=false;
// find section
Position:=SearchCodeInSource(Source,Section,1,EndPos,false);
if Position<1 then exit;
// search for include directives
repeat
Atom:=ReadNextPascalAtom(Source,Position,AtomStart);
if (copy(Atom,1,2)='{$') or (copy(Atom,1,3)='(*$') then begin
SplitCompilerDirective(Atom,DirectiveName,Filename);
DirectiveName:=lowercase(DirectiveName);
if (DirectiveName='i') or (DirectiveName='include') then begin
// include directive
dec(Index);
if Index=0 then begin
IncludeStart:=AtomStart;
IncludeEnd:=Position;
Result:=true;
exit;
end;
end;
end;
until Atom='';
end;
function SplitCompilerDirective(const Directive:string;
var DirectiveName,Parameters:string):boolean;
var EndPos,DirStart,DirEnd:integer;
begin
if (copy(Directive,1,2)='{$') or (copy(Directive,1,3)='(*$') then begin
if copy(Directive,1,2)='{$' then begin
DirStart:=3;
DirEnd:=length(Directive);
end else begin
DirStart:=4;
DirEnd:=length(Directive)-1;
end;
EndPos:=DirStart;
while (EndPos<DirEnd) and (IsIDChar[Directive[EndPos]]) do
inc(EndPos);
DirectiveName:=lowercase(copy(Directive,DirStart,EndPos-DirStart));
Parameters:=copy(Directive,EndPos+1,DirEnd-EndPos-1);
Result:=true;
end else
Result:=false;
end;
function FindSourceType(const Source: string;
var SrcNameStart, SrcNameEnd: integer): string;
begin
// read first atom for type
SrcNameEnd:=1;
Result:=ReadNextPascalAtom(Source,SrcNameEnd,SrcNameStart);
// read second atom for name
if Result<>'' then
ReadNextPascalAtom(Source,SrcNameEnd,SrcNameStart);
end;
function RenameUnitInSource(Source:TSourceLog;const NewUnitName:string):boolean;
var UnitNameStart,UnitNameEnd:integer;
begin
UnitNameStart:=0;
UnitNameEnd:=0;
Result:=(FindUnitNameInSource(Source.Source,UnitNameStart,UnitNameEnd)<>'');
if Result then
Source.Replace(UnitNameStart,UnitNameEnd-UnitNameStart,NewUnitName);
end;
function FindUnitNameInSource(const Source:string;
var UnitNameStart,UnitNameEnd:integer):string;
begin
if uppercasestr(FindSourceType(Source,UnitNameStart,UnitNameEnd))='UNIT' then
Result:=copy(Source,UnitNameStart,UnitNameEnd-UnitNameStart)
else
Result:='';
end;
function RenameProgramInSource(Source: TSourceLog;
const NewProgramName:string):boolean;
var ProgramNameStart,ProgramNameEnd:integer;
begin
Result:=(FindProgramNameInSource(Source.Source,
ProgramNameStart,ProgramNameEnd)<>'');
if Result then
Source.Replace(ProgramNameStart,
ProgramNameEnd-ProgramNameStart,NewProgramName)
end;
function FindProgramNameInSource(const Source:string;
var ProgramNameStart,ProgramNameEnd:integer):string;
begin
if uppercasestr(FindSourceType(Source,ProgramNameStart,ProgramNameEnd))=
'PROGRAM'
then
Result:=copy(Source,ProgramNameStart,ProgramNameEnd-ProgramNameStart)
else
Result:='';
end;
function UnitIsUsedInSource(const Source,UnitName:string):boolean;
// search in all uses sections
var UsesStart,UsesEnd:integer;
begin
Result:=false;
repeat
UsesStart:=SearchCodeInSource(Source,'uses',1,UsesEnd,false);
if UsesStart>0 then begin
if IsUnitUsedInUsesSection(Source,UnitName,UsesStart) then begin
Result:=true;
exit;
end;
end;
until UsesStart<1;
end;
function RenameUnitInProgramUsesSection(Source:TSourceLog;
const OldUnitName, NewUnitName, NewInFile:string): boolean;
var
ProgramTermStart,ProgramTermEnd,
UsesStart,UsesEnd:integer;
begin
Result:=false;
// search Program section
ProgramTermStart:=SearchCodeInSource(Source.Source,'program',1,ProgramTermEnd
,false);
if ProgramTermStart<1 then exit;
// search programname
ReadNextPascalAtom(Source.Source,ProgramTermEnd,ProgramTermStart);
// search semicolon after programname
if not (ReadNextPascalAtom(Source.Source,ProgramTermEnd,ProgramTermStart)=';')
then exit;
UsesEnd:=ProgramTermEnd;
ReadNextPascalAtom(Source.Source,UsesEnd,UsesStart);
if UsesEnd>length(Source.Source) then exit;
if not (lowercase(copy(Source.Source,UsesStart,UsesEnd-UsesStart))='uses')
then begin
// no uses section in interface -> add one
Source.Insert(ProgramTermEnd,LineEnding+LineEnding+'uses'+LineEnding+' ;');
UsesEnd:=ProgramTermEnd;
ReadNextPascalAtom(Source.Source,UsesEnd,UsesStart);
end;
if not (lowercase(copy(Source.Source,UsesStart,UsesEnd-UsesStart))='uses')
then exit;
Result:=RenameUnitInUsesSection(Source,UsesStart,OldUnitName
,NewUnitName,NewInFile);
end;
function AddToProgramUsesSection(Source:TSourceLog;
const AUnitName,InFileName:string):boolean;
var
ProgramTermStart,ProgramTermEnd,
UsesStart,UsesEnd:integer;
begin
Result:=false;
if (AUnitName='') or (AUnitName=';') then exit;
// search program
ProgramTermStart:=SearchCodeInSource(Source.Source,'program',1,ProgramTermEnd
,false);
if ProgramTermStart<1 then exit;
// search programname
ReadNextPascalAtom(Source.Source,ProgramTermEnd,ProgramTermStart);
// search semicolon after programname
if not (ReadNextPascalAtom(Source.Source,ProgramTermEnd,ProgramTermStart)=';')
then exit;
// search uses section
UsesEnd:=ProgramTermEnd;
ReadNextPascalAtom(Source.Source,UsesEnd,UsesStart);
if UsesEnd>length(Source.Source) then exit;
if not (lowercase(copy(Source.Source,UsesStart,UsesEnd-UsesStart))='uses')
then begin
// no uses section after program term -> add one
Source.Insert(ProgramTermEnd,LineEnding+LineEnding+'uses'+LineEnding+' ;');
UsesEnd:=ProgramTermEnd;
ReadNextPascalAtom(Source.Source,UsesEnd,UsesStart);
end;
if not (lowercase(copy(Source.Source,UsesStart,UsesEnd-UsesStart))='uses')
then exit;
Result:=AddUnitToUsesSection(Source,AUnitName,InFileName,UsesStart);
end;
function RenameUnitInInterfaceUsesSection(Source:TSourceLog;
const OldUnitName, NewUnitName, NewInFile:string): boolean;
var
InterfaceStart,InterfaceWordEnd,
UsesStart,UsesEnd:integer;
begin
Result:=false;
// search interface section
InterfaceStart:=SearchCodeInSource(Source.Source,'interface',1
,InterfaceWordEnd,false);
if InterfaceStart<1 then exit;
UsesEnd:=InterfaceWordEnd;
ReadNextPascalAtom(Source.Source,UsesEnd,UsesStart);
if UsesEnd>length(Source.Source) then exit;
if not (lowercase(copy(Source.Source,UsesStart,UsesEnd-UsesStart))='uses')
then begin
// no uses section in interface -> add one
Source.Insert(InterfaceWordEnd,LineEnding+LineEnding+'uses'+LineEnding+' ;');
UsesEnd:=InterfaceWordEnd;
ReadNextPascalAtom(Source.Source,UsesEnd,UsesStart);
end;
if not (lowercase(copy(Source.Source,UsesStart,UsesEnd-UsesStart))='uses')
then exit;
Result:=RenameUnitInUsesSection(Source,UsesStart,OldUnitName
,NewUnitName,NewInFile);
end;
function AddToInterfaceUsesSection(Source:TSourceLog;
const AUnitName,InFileName:string):boolean;
var
InterfaceStart,InterfaceWordEnd,
UsesStart,UsesEnd:integer;
begin
Result:=false;
if AUnitName='' then exit;
// search interface section
InterfaceStart:=SearchCodeInSource(Source.Source,'interface',1
,InterfaceWordEnd,false);
if InterfaceStart<1 then exit;
UsesEnd:=InterfaceWordEnd;
ReadNextPascalAtom(Source.Source,UsesEnd,UsesStart);
if UsesEnd>length(Source.Source) then exit;
if not (lowercase(copy(Source.Source,UsesStart,UsesEnd-UsesStart))='uses')
then begin
// no uses section in interface -> add one
Source.Insert(InterfaceWordEnd,LineEnding+LineEnding+'uses'+LineEnding+' ;');
UsesEnd:=InterfaceWordEnd;
ReadNextPascalAtom(Source.Source,UsesEnd,UsesStart);
end;
if not (lowercase(copy(Source.Source,UsesStart,UsesEnd-UsesStart))='uses')
then exit;
Result:=AddUnitToUsesSection(Source,AUnitName,InFileName,UsesStart);
end;
function RemoveFromProgramUsesSection(Source:TSourceLog;
const AUnitName:string):boolean;
var
ProgramTermStart,ProgramTermEnd,
UsesStart,UsesEnd:integer;
Atom:string;
begin
Result:=false;
if AUnitName='' then exit;
// search program
ProgramTermStart:=SearchCodeInSource(Source.Source,'program',1
,ProgramTermEnd,false);
if ProgramtermStart<1 then exit;
// search programname
ReadNextPascalAtom(Source.Source,ProgramTermEnd,ProgramTermStart);
// search semicolon after programname
if not (ReadNextPascalAtom(Source.Source,ProgramTermEnd,ProgramTermStart)=';')
then exit;
UsesEnd:=ProgramTermEnd;
Atom:=ReadNextPascalAtom(Source.Source,UsesEnd,UsesStart);
if UsesEnd>length(Source.Source) then exit;
if not (lowercase(Atom)='uses') then exit;
Result:=RemoveUnitFromUsesSection(Source,AUnitName,UsesStart);
end;
function RemoveFromInterfaceUsesSection(Source:TSourceLog;
const AUnitName:string):boolean;
var
InterfaceStart,InterfaceWordEnd,
UsesStart,UsesEnd:integer;
Atom:string;
begin
Result:=false;
if AUnitName='' then exit;
// search interface section
InterfaceStart:=SearchCodeInSource(Source.Source,'interface',1
,InterfaceWordEnd,false);
if InterfaceStart<1 then exit;
UsesEnd:=InterfaceWordEnd;
Atom:=ReadNextPascalAtom(Source.Source,UsesEnd,UsesStart);
if UsesEnd>length(Source.Source) then exit;
if not (lowercase(Atom)='uses') then exit;
Result:=RemoveUnitFromUsesSection(Source,AUnitName,UsesStart);
end;
function IsUnitUsedInUsesSection(const Source,UnitName:string;
UsesStart:integer):boolean;
var UsesEnd:integer;
Atom:string;
begin
Result:=false;
if UnitName='' then exit;
if UsesStart<1 then exit;
if not (lowercase(copy(Source,UsesStart,4))='uses') then exit;
UsesEnd:=UsesStart+4;
// parse through all used units and see if it is there
repeat
Atom:=ReadNextPascalAtom(Source,UsesEnd,UsesStart);
if (lowercase(Atom)=lowercase(UnitName)) then begin
// unit found
Result:=true;
exit;
end;
// read til next comma or semicolon
repeat
Atom:=ReadNextPascalAtom(Source,UsesEnd,UsesStart);
until (Atom=',') or (Atom=';') or (Atom='');
until Atom<>',';
// unit not used
Result:=true;
end;
function RenameUnitInUsesSection(Source:TSourceLog; UsesStart: integer;
const OldUnitName, NewUnitName, NewInFile:string): boolean;
var UsesEnd:integer;
LineStart,LineEnd,OldUsesStart:integer;
s,Atom,NewUnitTerm:string;
begin
Result:=false;
if (OldUnitName='') then begin
Result:=AddUnitToUsesSection(Source,NewUnitName,NewInFile,UsesStart);
exit;
end;
if (NewUnitName='') or (NewUnitName=';')
or (OldUnitName=';') or (UsesStart<1) then exit;
UsesEnd:=UsesStart+4;
if not (lowercase(copy(Source.Source,UsesStart,4))='uses') then exit;
// parse through all used units and see if it is already there
if NewInFile<>'' then
NewUnitTerm:=NewUnitName+' in '''+NewInFile+''''
else
NewUnitTerm:=NewUnitName;
s:=', ';
repeat
Atom:=ReadNextPascalAtom(Source.Source,UsesEnd,UsesStart);
if (lowercase(Atom)=lowercase(OldUnitName)) then begin
// unit already used
OldUsesStart:=UsesStart;
// find comma or semicolon
repeat
Atom:=ReadNextPascalAtom(Source.Source,UsesEnd,UsesStart);
until (Atom=',') or (Atom=';') or (Atom='');
Source.Replace(OldUsesStart,UsesStart-OldUsesStart,NewUnitTerm);
Result:=true;
exit;
end else if (Atom=';') then begin
s:=' ';
break;
end;
// read til next comma or semicolon
while (Atom<>',') and (Atom<>';') and (Atom<>'') do
Atom:=ReadNextPascalAtom(Source.Source,UsesEnd,UsesStart);
until Atom<>',';
// unit not used yet -> add it
Source.Insert(UsesStart,s+NewUnitTerm);
GetLineStartEndAtPosition(Source.Source,UsesStart,LineStart,LineEnd);
if (LineEnd-LineStart>MaxLineLength) or (NewInFile<>'') then
Source.Insert(UsesStart,LineEnding+' ');
Result:=true;
end;
function AddUnitToUsesSection(Source:TSourceLog;
const UnitName,InFilename:string; UsesStart:integer):boolean;
var UsesEnd:integer;
LineStart,LineEnd:integer;
s,Atom,NewUnitTerm:string;
begin
Result:=false;
if (UnitName='') or (UnitName=';') or (UsesStart<1) then exit;
UsesEnd:=UsesStart+4;
if not (lowercase(copy(Source.Source,UsesStart,4))='uses') then exit;
// parse through all used units and see if it is already there
s:=', ';
repeat
Atom:=ReadNextPascalAtom(Source.Source,UsesEnd,UsesStart);
if (lowercase(Atom)=lowercase(UnitName)) then begin
// unit found
Result:=true;
exit;
end else if (Atom=';') then begin
s:=' ';
break;
end;
// read til next comma or semicolon
while (Atom<>',') and (Atom<>';') and (Atom<>'') do
Atom:=ReadNextPascalAtom(Source.Source,UsesEnd,UsesStart);
until Atom<>',';
// unit not used yet -> add it
if InFilename<>'' then
NewUnitTerm:=UnitName+' in '''+InFileName+''''
else
NewUnitTerm:=UnitName;
Source.Insert(UsesStart,s+NewUnitTerm);
GetLineStartEndAtPosition(Source.Source,UsesStart,LineStart,LineEnd);
if (LineEnd-LineStart>MaxLineLength) or (InFileName<>'') then
Source.Insert(UsesStart,LineEnding+' ');
Result:=true;
end;
function RemoveUnitFromUsesSection(Source:TSourceLog; const UnitName:string;
UsesStart:integer):boolean;
var UsesEnd,OldUsesStart,OldUsesEnd:integer;
Atom:string;
begin
Result:=false;
if (UsesStart<1) or (UnitName='') or (UnitName=',') or (UnitName=';') then
exit;
// search interface section
UsesEnd:=UsesStart+4;
if not (lowercase(copy(Source.Source,UsesStart,4))='uses') then exit;
// parse through all used units and see if it is there
OldUsesEnd:=-1;
repeat
Atom:=ReadNextPascalAtom(Source.Source,UsesEnd,UsesStart);
if (lowercase(Atom)=lowercase(UnitName)) then begin
// unit found
OldUsesStart:=UsesStart;
// find comma or semicolon
repeat
Atom:=ReadNextPascalAtom(Source.Source,UsesEnd,UsesStart);
until (Atom=',') or (Atom=';') or (Atom='');
if OldUsesEnd<1 then
// first used unit
Source.Delete(OldUsesStart,UsesStart-OldUsesStart)
else
// not first used unit (remove comma in front of unitname too)
Source.Delete(OldUsesEnd,UsesStart-OldUsesEnd);
Result:=true;
exit;
end else
OldUsesEnd:=UsesEnd;
// read til next comma or semicolon
while (Atom<>',') and (Atom<>';') and (Atom<>'') do
Atom:=ReadNextPascalAtom(Source.Source,UsesEnd,UsesStart);
until Atom<>',';
// unit not used
end;
function AddCreateFormToProgram(Source:TSourceLog;
const AClassName,AName:string):boolean;
// insert 'Application.CreateForm(<AClassName>,<AName>);'
// in front of 'Application.Run;'
var Position, EndPosition: integer;
begin
Result:=false;
Position:=SearchCodeInSource(Source.Source,'application.run',1
,EndPosition,false);
if Position<1 then exit;
Source.Insert(Position,
'Application.CreateForm('+AClassName+','+AName+');'+LineEnding+' ');
Result:=true;
end;
function RemoveCreateFormFromProgram(Source:TSourceLog;
const AClassName,AName:string):boolean;
// remove 'Application.CreateForm(<AClassName>,<AName>);'
var Position,EndPosition,AtomStart:integer;
begin
Result:=false;
Position:=SearchCodeInSource(Source.Source,
'application.createform('+AClassName+','+AName+')',1,EndPosition,false);
if Position<1 then exit;
if ReadNextPascalAtom(Source.Source,EndPosition,AtomStart)=';' then
ReadNextPascalAtom(Source.Source,EndPosition,AtomStart);
EndPosition:=AtomStart;
Source.Delete(Position,EndPosition-Position);
Result:=true;
end;
function CreateFormExistsInProgram(const Source,
AClassName,AName:string):boolean;
var Position,EndPosition:integer;
begin
Position:=SearchCodeInSource(Source,
'application.createform('+AClassName+','+AName+')',1,EndPosition,false);
Result:=Position>0;
end;
function ListAllCreateFormsInProgram(const Source:string):TStrings;
// list format: <formname>:<formclassname>
var Position,EndPosition:integer;
s:string;
begin
Result:=TStringList.Create;
Position:=1;
repeat
Position:=SearchCodeInSource(Source,
'application.createform(',Position,EndPosition,false);
if Position>0 then begin
s:=ReadNextPascalAtom(Source,EndPosition,Position);
ReadNextPascalAtom(Source,EndPosition,Position);
s:=ReadNextPascalAtom(Source,EndPosition,Position)+':'+s;
Result.Add(s);
end;
until Position<1;
end;
function FindResourceInCode(const Source, AddCode:string;
var Position,EndPosition:integer):boolean;
var Find,Atom:string;
FindPosition,FindAtomStart,SemicolonPos:integer;
begin
Result:=false;
if AddCode='' then begin
Result:=true;
exit;
end;
if Source='' then exit;
// search "LazarusResources.Add('<ResourceName>',"
FindPosition:=1;
repeat
Atom:=ReadNextPascalAtom(AddCode,FindPosition,FindAtomStart);
until (Atom='') or (Atom=',');
if Atom='' then exit;
// search the resource start in code
Find:=copy(AddCode,1,FindPosition-1);
Position:=SearchCodeInSource(Source,Find,1,EndPosition,false);
if Position<1 then exit;
// search resource end in code
SemicolonPos:=SearchCodeInSource(Source,');',EndPosition,EndPosition,false);
if SemicolonPos<1 then exit;
Result:=true;
end;
function AddResourceCode(Source:TSourceLog; const AddCode:string):boolean;
var StartPos,EndPos:integer;
begin
if FindResourceInCode(Source.Source,AddCode,StartPos,EndPos) then begin
// resource exists already -> replace it
Source.Replace(StartPos,EndPos-StartPos,AddCode);
end else begin
// add resource
Source.Insert(length(Source.Source)+1,LineEnding+AddCode);
end;
Result:=true;
end;
function FindFormClassDefinitionInSource(const Source, FormClassName:string;
var FormClassNameStartPos, FormBodyStartPos: integer):boolean;
var AtomEnd,AtomStart: integer;
begin
Result:=false;
if FormClassName='' then exit;
repeat
FormClassNameStartPos:=SearchCodeInSource(Source,
FormClassName+'=class(TForm)',1,FormBodyStartPos,false);
if FormClassNameStartPos<1 then exit;
AtomEnd:=FormBodyStartPos;
until ReadNextPascalAtom(Source,AtomEnd,AtomStart)<>';';
Result:=true;
end;
function FindFormComponentInSource(const Source: string;
FormBodyStartPos: integer;
const ComponentName, ComponentClassName: string): integer;
var AtomStart, OldPos: integer;
Atom,LowComponentName,LowComponentClassName: string;
begin
LowComponentName:=lowercase(ComponentName);
LowComponentClassName:=lowercase(ComponentClassName);
Result:=FormBodyStartPos;
repeat
Atom:=lowercase(ReadNextPascalAtom(Source,Result,AtomStart));
if (Atom='public') or (Atom='private') or (Atom='end')
or (Atom='protected') or (Atom='') then begin
Result:=-1;
exit;
end;
OldPos:=Result;
if (lowercase(ReadNextPascalAtom(Source,Result,AtomStart))=LowComponentName)
and (ReadNextPascalAtom(Source,Result,AtomStart)=':')
and (lowercase(ReadNextPascalAtom(Source,Result,AtomStart))=
LowComponentClassName)
and (ReadNextPascalAtom(Source,Result,AtomStart)=';') then begin
Result:=OldPos;
exit;
end;
until Result>length(Source);
Result:=-1;
end;
function AddFormComponentToSource(Source:TSourceLog; FormBodyStartPos: integer;
const ComponentName, ComponentClassName: string): boolean;
var Position, AtomStart: integer;
Atom: string;
PriorSpaces, NextSpaces: string;
begin
Result:=false;
if FindFormComponentInSource(Source.Source,FormBodyStartPos
,ComponentName,ComponentClassName)>0 then begin
Result:=true;
exit;
end;
Position:=FormBodyStartPos;
repeat
// find a good position to insert the component
// in front of next section and in front of procedures/functions
Atom:=lowercase(ReadNextPascalAtom(Source.SOurce,Position,AtomStart));
if (Atom='procedure') or (Atom='function') or (Atom='end') or (Atom='class')
or (Atom='constructor') or (Atom='destructor')
or (Atom='public') or (Atom='private') or (Atom='protected')
or (Atom='published') or (Atom='class') or (Atom='property') then begin
// insert component definition in source
if (Atom='public') or (Atom='private') or (Atom='protected')
or (Atom='published') then begin
PriorSpaces:=' ';
NextSpaces:=' ';
end else begin
PriorSpaces:='';
NextSpaces:=' ';
end;
Source.Insert(AtomStart,
PriorSpaces+ComponentName+': '+ComponentClassName+';'+LineEnding
+NextSpaces);
Result:=true;
exit;
end;
until Position>length(Source.Source);
Result:=false;
end;
function RemoveFormComponentFromSource(Source:TSourceLog;
FormBodyStartPos: integer;
ComponentName, ComponentClassName: string): boolean;
var AtomStart, Position, ComponentStart, LineStart, LineEnd: integer;
Atom: string;
begin
ComponentName:=lowercase(ComponentName);
ComponentClassName:=lowercase(ComponentClassName);
Position:=FormBodyStartPos;
repeat
Atom:=lowercase(ReadNextPascalAtom(Source.Source,Position,AtomStart));
if (Atom='public') or (Atom='private') or (Atom='end')
or (Atom='protected') or (Atom='') then begin
Result:=false;
exit;
end;
if (Atom=ComponentName) then begin
ComponentStart:=AtomStart;
if (ReadNextPascalAtom(Source.Source,Position,AtomStart)=':')
and (lowercase(ReadNextPascalAtom(Source.Source,Position,AtomStart))=
ComponentClassName)
then begin
GetLineStartEndAtPosition(Source.Source,ComponentStart,LineStart,LineEnd);
if (LineEnd<=length(Source.Source))
and (Source.Source[LineEnd] in [#10,#13]) then begin
inc(LineEnd);
if (LineEnd<=length(Source.Source))
and (Source.Source[LineEnd] in [#10,#13])
and (Source.Source[LineEnd]<>Source.Source[LineEnd-1]) then
inc(LineEnd);
end;
Source.Delete(LineStart,LineEnd-LineStart);
Result:=true;
exit;
end;
end;
until Atom='';
Result:=true;
end;
function FindClassAncestorName(const Source, FormClassName: string): string;
var
SrcPos, AtomStart: integer;
begin
Result:='';
if SearchCodeInSource(Source,FormClassName+'=class(',1,SrcPos,false)<1 then
exit;
Result:=ReadNextPascalAtom(Source,SrcPos,AtomStart);
if (Result<>'') and (not IsValidIdent(Result)) then
Result:='';
end;
function SearchCodeInSource(const Source, Find: string; StartPos: integer;
var EndFoundPosition: integer; CaseSensitive: boolean):integer;
// search pascal atoms of Find in Source
// returns the start pos
var
FindLen: Integer;
SrcLen: Integer;
Position: Integer;
FirstFindPos: Integer;
FindAtomStart: Integer;
AtomStart: Integer;
FindAtomLen: Integer;
AtomLen: Integer;
SrcPos: Integer;
FindPos: Integer;
SrcAtomStart: Integer;
FirstFindAtomStart: Integer;
begin
Result:=-1;
if (Find='') or (StartPos>length(Source)) then exit;
FindLen:=length(Find);
SrcLen:=length(Source);
Position:=StartPos;
AtomStart:=StartPos;
FirstFindPos:=1;
FirstFindAtomStart:=1;
// search first atom in find
ReadRawNextPascalAtom(Find,FirstFindPos,FirstFindAtomStart);
FindAtomLen:=FirstFindPos-FirstFindAtomStart;
if FirstFindAtomStart>FindLen then exit;
repeat
// read next atom
ReadRawNextPascalAtom(Source,Position,AtomStart);
if AtomStart>SrcLen then exit;
AtomLen:=Position-AtomStart;
if (AtomLen=FindAtomLen)
and (CompareText(@Find[FirstFindAtomStart],FindAtomLen,
@Source[AtomStart],AtomLen,CaseSensitive)=0)
then begin
// compare all atoms
SrcPos:=Position;
SrcAtomStart:=SrcPos;
FindPos:=FirstFindPos;
FindAtomStart:=FindPos;
repeat
// read the next atom from the find
ReadRawNextPascalAtom(Find,FindPos,FindAtomStart);
if FindAtomStart>FindLen then begin
// found !
EndFoundPosition:=SrcPos;
Result:=AtomStart;
exit;
end;
// read the next atom from the source
ReadRawNextPascalAtom(Source,SrcPos,SrcAtomStart);
// compare
if (CompareText(@Find[FindAtomStart],FindPos-FindAtomStart,
@Source[SrcAtomStart],SrcPos-SrcAtomStart,
CaseSensitive)<>0)
then
break;
until false;
end;
until false;
end;
function FindNextCompilerDirective(const ASource: string; StartPos: integer;
NestedComments: boolean): integer;
var
MaxPos: integer;
begin
MaxPos:=length(ASource);
Result:=StartPos;
while (Result<=MaxPos) do begin
case ASource[Result] of
'''':
begin
inc(Result);
while (Result<=MaxPos) do begin
if (ASource[Result]<>'''') then
inc(Result)
else begin
inc(Result);
break;
end;
end;
end;
'/':
begin
inc(Result);
if (Result<=MaxPos) and (ASource[Result]='/') then begin
// skip Delphi comment
while (Result<=MaxPos) and (not (ASource[Result] in [#10,#13])) do
inc(Result);
end;
end;
'{':
begin
if (Result<MaxPos) and (ASource[Result+1]='$') then
exit;
// skip pascal comment
Result:=FindCommentEnd(ASource,Result,NestedComments);
end;
'(':
begin
if (Result<MaxPos) and (ASource[Result+1]='*') then begin
if (Result+2<=MaxPos) and (ASource[Result+2]='$') then
exit;
// skip TP comment
Result:=FindCommentEnd(ASource,Result,NestedComments);
end else
inc(Result);
end;
else
inc(Result);
end;
end;
if Result>MaxPos+1 then Result:=MaxPos+1;
end;
function FindNextCompilerDirectiveWithName(const ASource: string;
StartPos: integer; const DirectiveName: string;
NestedComments: boolean; var ParamPos: integer): integer;
var
Offset: Integer;
SrcLen: Integer;
begin
Result:=StartPos;
ParamPos:=0;
SrcLen:=length(ASource);
repeat
Result:=FindNextCompilerDirective(ASource,Result,NestedComments);
if (Result<1) or (Result>SrcLen) then break;
if (ASource[Result]='{') then
Offset:=2
else if ASource[Result]='(' then
Offset:=3
else
Offset:=-1;
if Offset>0 then begin
if (CompareIdentifiers(PChar(DirectiveName),@ASource[Result+Offset])=0)
then begin
ParamPos:=FindNextNonSpace(ASource,Result+Offset+length(DirectiveName));
exit;
end;
end;
Result:=FindCommentEnd(ASource,Result,NestedComments);
until false;
Result:=-1;
end;
function FindNextNonSpace(const ASource: string; StartPos: integer
): integer;
var
SrcLen: integer;
begin
SrcLen:=length(ASource);
Result:=StartPos;
while (Result<=SrcLen) and (ASource[Result] in [' ',#9,#10,#13]) do
inc(Result);
end;
function FindCommentEnd(const ASource: string; StartPos: integer;
NestedComments: boolean): integer;
var
MaxPos, CommentLvl: integer;
begin
MaxPos:=length(ASource);
Result:=StartPos;
if Result>MaxPos then exit;
case ASource[Result] of
'/':
begin
if (Result<MaxPos) and (ASource[Result+1]='/') then begin
// skip Delphi comment
while (Result<=MaxPos) and (not (ASource[Result] in [#10,#13])) do
inc(Result);
end;
end;
'{':
begin
CommentLvl:=1;
inc(Result);
while Result<=MaxPos do begin
case ASource[Result] of
'{':
if NestedComments then
inc(CommentLvl);
'}':
begin
dec(CommentLvl);
if CommentLvl=0 then begin
inc(Result);
break;
end;
end;
end;
inc(Result);
end;
end;
'(':
if (Result<MaxPos) and (ASource[Result+1]='*') then begin
inc(Result,2);
while (Result<=MaxPos) do begin
if (Result<MaxPos) and (ASource[Result]='*') and (ASource[Result+1]=')')
then begin
inc(Result,2);
break;
end;
inc(Result);
end;
end;
end;
end;
procedure GetLineStartEndAtPosition(const Source:string; Position:integer;
var LineStart,LineEnd:integer);
begin
LineStart:=Position;
while (LineStart>0) and (not (Source[LineStart] in [#10,#13])) do
dec(LineStart);
inc(LineStart);
LineEnd:=Position;
while (LineEnd<=length(Source)) and (not (Source[LineEnd] in [#10,#13])) do
inc(LineEnd);
end;
function EmptyCodeLineCount(const Source: string; StartPos, EndPos: integer;
NestedComments: boolean): integer;
{ search forward for a line end or code
ignore line ends in comments
Result is Position of Start of Line End
}
var SrcLen: integer;
SrcPos: Integer;
procedure ReadComment(var P: integer);
begin
case Source[P] of
'{':
begin
inc(P);
while (P<=SrcLen) and (Source[P]<>'}') do begin
if NestedComments and (Source[P] in ['{','(','/']) then
ReadComment(P)
else
inc(P);
end;
inc(P);
end;
'(':
begin
inc(P);
if (P<=SrcLen) and (Source[P]='*') then begin
inc(P);
while (P<=SrcLen-1)
and ((Source[P]<>'*') or (Source[P-1]<>')')) do begin
if NestedComments and (Source[P] in ['{','(','/']) then
ReadComment(P)
else
inc(P);
end;
inc(P,2);
end;
end;
'/':
begin
inc(P);
if (P<=SrcLen) and (Source[P]='/') then begin
inc(P);
while (P<=SrcLen)
and (not (Source[P] in [#10,#13])) do begin
if NestedComments and (Source[P] in ['{','(','/']) then
ReadComment(P)
else
inc(P);
end;
end;
end;
end;
end;
begin
Result:=0;
SrcLen:=length(Source);
if EndPos>SrcLen then EndPos:=SrcLen+1;
SrcPos:=StartPos;
while (SrcPos<EndPos) do begin
case Source[SrcPos] of
'{','(','/':
ReadComment(SrcPos);
#10,#13:
begin
// skip line end
inc(SrcPos);
if (SrcPos<EndPos) and (Source[SrcPos] in [#10,#13])
and (Source[SrcPos]<>Source[SrcPos-1]) then
inc(SrcPos);
// count empty lines
if (SrcPos<EndPos) and (Source[SrcPos] in [#10,#13]) then
inc(Result);
end;
else
inc(SrcPos);
end;
end;
end;
function PositionsInSameLine(const Source: string;
Pos1, Pos2: integer): boolean;
var
StartPos: Integer;
EndPos: Integer;
begin
if Pos1<Pos2 then begin
StartPos:=Pos1;
EndPos:=Pos2;
end else begin
StartPos:=Pos2;
EndPos:=Pos1;
end;
if EndPos>length(Source) then EndPos:=length(Source);
while StartPos<=EndPos do begin
if Source[StartPos] in [#10,#13] then begin
Result:=false;
exit;
end else
inc(StartPos);
end;
Result:=true;
end;
procedure GetIdentStartEndAtPosition(const Source: string; Position: integer;
var IdentStart, IdentEnd: integer);
begin
IdentStart:=Position;
IdentEnd:=Position;
if (Position<1) or (Position>length(Source)) then exit;
while (IdentStart>1)
and (IsIdChar[Source[IdentStart-1]]) do
dec(IdentStart);
while (IdentEnd<=length(Source))
and (IsIdChar[Source[IdentEnd]]) do
inc(IdentEnd);
end;
function GetIdentLen(Identifier: PChar): integer;
begin
Result:=0;
if Identifier=nil then exit;
while (IsIDChar[Identifier[Result]]) do inc(Result);
end;
function ReadNextPascalAtom(const Source:string;
var Position,AtomStart:integer):string;
var DirectiveName:string;
DirStart,DirEnd,EndPos:integer;
begin
repeat
ReadRawNextPascalAtom(Source,Position,AtomStart);
Result:=copy(Source,AtomStart,Position-AtomStart);
if (copy(Result,1,2)='{$') or (copy(Result,1,3)='(*$') then begin
if copy(Result,1,2)='{$' then begin
DirStart:=3;
DirEnd:=length(Result);
end else begin
DirStart:=4;
DirEnd:=length(Result)-1;
end;
EndPos:=DirStart;
while (EndPos<DirEnd) and (IsIDChar[Result[EndPos]]) do inc(EndPos);
DirectiveName:=lowercase(copy(Result,DirStart,EndPos-DirStart));
if (length(DirectiveName)=1) and (Result[DirEnd] in ['+','-']) then begin
// switch
end else if (DirectiveName='i') or (DirectiveName='include') then begin
// include directive
break;
end;
// ToDo: compiler directives
end else
break;
until false;
end;
procedure ReadRawNextPascalAtom(const Source:string;
var Position,AtomStart:integer);
var Len:integer;
c1,c2:char;
begin
Len:=length(Source);
// read til next atom
while (Position<=Len) do begin
case Source[Position] of
#0..#32: // spaces and special characters
begin
inc(Position);
end;
'{': // comment start or compiler directive
begin
if (Position<Len) and (Source[Position+1]='$') then
// compiler directive
break
else begin
// read till comment end
while (Position<=Len) and (Source[Position]<>'}') do inc(Position);
inc(Position);
end;
end;
'/': // comment or real division
if (Position<Len) and (Source[Position]='/') then begin
// comment start -> read til line end
inc(Position);
while (Position<=Len) and (not (Source[Position] in [#10,#13])) do
inc(Position);
end else
break;
'(': // comment, bracket or compiler directive
if (Position<Len) and (Source[Position]='*') then begin
if (Position+2<=Len) and (Source[Position]='$') then
// compiler directive
break
else begin
// comment start -> read til comment end
inc(Position,2);
while (Position<Len)
and ((Source[Position]<>'*') or (Source[Position]<>')')) do
inc(Position);
inc(Position,2);
end;
end else
// round bracket open
break;
else
break;
end;
end;
// read atom
AtomStart:=Position;
if Position<=Len then begin
c1:=Source[Position];
if IsIDStartChar[c1] then begin
// identifier
inc(Position);
while (Position<=Len) and (IsIDChar[Source[Position]]) do
inc(Position);
end else begin
case c1 of
'0'..'9': // number
begin
inc(Position);
// read numbers
while (Position<=Len) and (Source[Position] in ['0'..'9']) do
inc(Position);
if (Position<Len) and (Source[Position]='.')
and (Source[Position+1]<>'.') then begin
// real type number
inc(Position);
while (Position<=Len) and (Source[Position] in ['0'..'9']) do
inc(Position);
if (Position<=Len) and (Source[Position] in ['e','E']) then begin
// read exponent
inc(Position);
if (Position<=Len) and (Source[Position]='-') then inc(Position);
while (Position<=Len) and (Source[Position] in ['0'..'9']) do
inc(Position);
end;
end;
end;
'''','#': // string constant
begin
while (Position<=Len) do begin
case (Source[Position]) of
'#':
begin
inc(Position);
while (Position<=Len)
and (Source[Position] in ['0'..'9']) do
inc(Position);
end;
'''':
begin
inc(Position);
while (Position<=Len)
and (Source[Position]<>'''') do
inc(Position);
inc(Position);
end;
else
break;
end;
end;
end;
'$': // hex constant
begin
inc(Position);
while (Position<=Len)
and (Source[Position] in ['0'..'9','A'..'F','a'..'f']) do
inc(Position);
end;
'{': // compiler directive
begin
inc(Position);
while (Position<=Len) and (Source[Position]<>'}') do
inc(Position);
inc(Position);
end;
'(': // bracket or compiler directive
if (Position<Len) and (Source[Position]='*') then begin
// compiler directive -> read til comment end
inc(Position,2);
while (Position<Len)
and ((Source[Position]<>'*') or (Source[Position]<>')')) do
inc(Position);
inc(Position,2);
end else
// round bracket open
inc(Position);
else
inc(Position);
if Position<=Len then begin
c2:=Source[Position];
// test for double char operators :=, +=, -=, /=, *=, <>, <=, >=, **
if ((c2='=') and (c1 in [':','+','-','/','*','<','>']))
or ((c1='<') and (c2='>'))
or ((c1='.') and (c2='.'))
or ((c1='*') and (c2='*'))
then inc(Position);
end;
end;
end;
end;
end;
function LineEndCount(const Txt: string;
var LengthOfLastLine: integer): integer;
var i, LastLineEndPos: integer;
begin
i:=1;
LastLineEndPos:=0;
Result:=0;
while i<=length(Txt) do begin
if (Txt[i] in [#10,#13]) then begin
inc(Result);
inc(i);
if (i<=length(Txt)) and (Txt[i] in [#10,#13]) and (Txt[i-1]<>Txt[i]) then
inc(i);
LastLineEndPos:=i-1;
end else
inc(i);
end;
LengthOfLastLine:=length(Txt)-LastLineEndPos;
end;
function FindFirstNonSpaceCharInLine(const Source: string;
Position: integer): integer;
begin
Result:=Position;
if (Result<0) then Result:=1;
if (Result>length(Source)) then Result:=length(Source);
if Result=0 then exit;
// search beginning of line
while (Result>1) and (not (Source[Result] in [#10,#13])) do
dec(Result);
// search
while (Result<length(Source)) and (Source[Result]<' ') do inc(Result);
end;
function GetLineIndent(const Source: string; Position: integer): integer;
var LineStart: integer;
begin
Result:=0;
LineStart:=Position;
if LineStart=0 then exit;
if (LineStart<0) then LineStart:=1;
if (LineStart>length(Source)+1) then LineStart:=length(Source)+1;
// search beginning of line
repeat
dec(LineStart);
until (LineStart<1) or (Source[LineStart] in [#10,#13]);
inc(LineStart);
// search code
Result:=LineStart;
while (Result<=length(Source)) and (Source[Result]=' ') do inc(Result);
dec(Result,LineStart);
end;
function FindLineEndOrCodeAfterPosition(const Source: string;
Position, MaxPosition: integer; NestedComments: boolean): integer;
{ search forward for a line end or code
ignore line ends in comments
Result is Position of Start of Line End
}
var SrcLen: integer;
procedure ReadComment(var P: integer);
begin
case Source[P] of
'{':
begin
inc(P);
while (P<=SrcLen) and (Source[P]<>'}') do begin
if NestedComments and (Source[P] in ['{','(','/']) then
ReadComment(P)
else
inc(P);
end;
inc(P);
end;
'(':
begin
inc(P);
if (P<=SrcLen) and (Source[P]='*') then begin
inc(P);
while (P<=SrcLen-1)
and ((Source[P]<>'*') or (Source[P-1]<>')')) do begin
if NestedComments and (Source[P] in ['{','(','/']) then
ReadComment(P)
else
inc(P);
end;
inc(P,2);
end;
end;
'/':
begin
inc(P);
if (P<=SrcLen) and (Source[P]='/') then begin
inc(P);
while (P<=SrcLen)
and (not (Source[P] in [#10,#13])) do begin
if NestedComments and (Source[P] in ['{','(','/']) then
ReadComment(P)
else
inc(P);
end;
end;
end;
end;
end;
begin
SrcLen:=length(Source);
if SrcLen>MaxPosition then SrcLen:=MaxPosition;
Result:=Position;
if Result=0 then exit;
while (Result<=SrcLen) do begin
case Source[Result] of
'{','(','/':
ReadComment(Result);
#10,#13:
exit;
#9,' ',';':
inc(Result);
else
exit;
end;
end;
end;
function FindLineEndOrCodeInFrontOfPosition(const Source: string;
Position, MinPosition: integer; NestedComments: boolean;
StopAtDirectives: boolean): integer;
{ search backward for a line end or code
ignore line ends in comments or at the end of comment lines
(comment lines are lines without code and at least one comment)
Result is Position of Start of Line End
examples: Position points at char 'a'
1: |
2: a:=1;
1: b:=1; |
2: // comment
3: // comment
4: a:=1;
1: |
2: /* */
3: a:=1;
1: end;| /*
2: */ a:=1;
1: b:=1; // comment |
2: a:=1;
1: b:=1; /*
2: comment */ |
3: a:=1;
}
var SrcStart: integer;
function ReadComment(var P: integer): boolean;
// false if compiler directive
var OldP: integer;
begin
OldP:=P;
case Source[P] of
'}':
begin
dec(P);
while (P>=SrcStart) and (Source[P]<>'{') do begin
if NestedComments and (Source[P] in ['}',')']) then
ReadComment(P)
else
dec(P);
end;
Result:=not (StopAtDirectives
and (P>=SrcStart) and (Source[P+1]='$'));
dec(P);
end;
')':
begin
dec(P);
if (P>=SrcStart) and (Source[P]='*') then begin
dec(P);
while (P>SrcStart)
and ((Source[P-1]<>'(') or (Source[P]<>'*')) do begin
if NestedComments and (Source[P] in ['}',')']) then
ReadComment(P)
else
dec(P);
end;
Result:=not (StopAtDirectives
and (P>=SrcStart) and (Source[P+1]='$'));
dec(P,2);
end else
Result:=true;
end;
else
Result:=true;
end;
if not Result then P:=OldP+1;
end;
var TestPos: integer;
OnlySpace: boolean;
begin
SrcStart:=MinPosition;
if SrcStart<1 then SrcStart:=1;
if Position<=SrcStart then begin
Result:=SrcStart;
exit;
end;
Result:=Position-1;
if Result>length(Source) then Result:=length(Source);
while (Result>=SrcStart) do begin
case Source[Result] of
'}',')':
if not ReadComment(Result) then exit;
#10,#13:
begin
// line end in code found
if (Result>SrcStart) and (Source[Result-1] in [#10,#13])
and (Source[Result]<>Source[Result-1]) then dec(Result);
// test if it is a comment line (a line without code and at least one
// comment)
TestPos:=Result-1;
OnlySpace:=true;
while (TestPos>SrcStart) do begin
if (Source[TestPos]='/') and (Source[TestPos-1]='/') then begin
// this is a comment line end -> search further
while (TestPos>SrcStart) and (Source[TestPos]='/') do
dec(TestPos);
break;
end else if Source[TestPos] in [#10,#13] then begin
// no comment, the line end ist really there :)
exit;
end else if OnlySpace
and ((Source[TestPos]='}')
or ((Source[TestPos]=')') and (Source[TestPos-1]='*'))) then begin
// this is a comment line end -> search further
break;
end else begin
if (Source[Result]>' ') then OnlySpace:=false;
dec(TestPos);
end;
end;
Result:=TestPos;
end;
' ',';',',':
dec(Result);
else
// code found
inc(Result);
exit;
end;
end;
if Result<SrcStart then Result:=SrcStart;
end;
function FindFirstLineEndAfterInCode(const Source: string;
Position, MaxPosition: integer; NestedComments: boolean): integer;
{ search forward for a line end
ignore line ends in comments
Result is Position of Start of Line End
}
var SrcLen: integer;
procedure ReadComment(var P: integer);
begin
case Source[P] of
'{':
begin
inc(P);
while (P<=SrcLen) and (Source[P]<>'}') do begin
if NestedComments and (Source[P] in ['{','(','/']) then
ReadComment(P)
else
inc(P);
end;
inc(P);
end;
'(':
begin
inc(P);
if (P<=SrcLen) and (Source[P]='*') then begin
inc(P);
while (P<=SrcLen-1)
and ((Source[P]<>'*') or (Source[P-1]<>')')) do begin
if NestedComments and (Source[P] in ['{','(','/']) then
ReadComment(P)
else
inc(P);
end;
inc(P,2);
end;
end;
'/':
begin
inc(P);
if (P<=SrcLen) and (Source[P]='/') then begin
inc(P);
while (P<=SrcLen)
and (not (Source[P] in [#10,#13])) do begin
if NestedComments and (Source[P] in ['{','(','/']) then
ReadComment(P)
else
inc(P);
end;
end;
end;
end;
end;
begin
SrcLen:=length(Source);
if SrcLen>MaxPosition then SrcLen:=MaxPosition;
Result:=Position;
while (Result<=SrcLen) do begin
case Source[Result] of
'{','(','/':
ReadComment(Result);
#10,#13:
exit;
else
inc(Result);
end;
end;
end;
function ChompLineEndsAtEnd(const s: string): string;
var
EndPos: Integer;
begin
EndPos:=length(s)+1;
while (EndPos>1) and (s[EndPos-1] in [#10,#13]) do dec(EndPos);
Result:=s;
SetLength(Result,EndPos-1);
end;
function TrimLineEnds(const s: string; TrimStart, TrimEnd: boolean): string;
var
StartPos: Integer;
EndPos: Integer;
LineEnd: Integer;
begin
StartPos:=1;
if TrimStart then begin
// trim empty lines at start
while (StartPos<=length(s))
and (s[StartPos] in [#10,#13]) do begin
inc(StartPos);
if (StartPos<=length(s))
and (s[StartPos] in [#10,#13])
and (s[StartPos]<>s[StartPos-1]) then
inc(StartPos);
end;
end;
EndPos:=length(s)+1;
if TrimEnd then begin
// trim empty lines at end
while (EndPos>StartPos)
and (s[EndPos-1] in [#10,#13]) do begin
LineEnd:=EndPos-1;
if (LineEnd>StartPos) and (s[LineEnd-1] in [#10,#13])
and (s[LineEnd-1]<>s[LineEnd]) then begin
dec(LineEnd);
end;
if (LineEnd>StartPos) and (s[LineEnd-1] in [#10,#13]) then
EndPos:=LineEnd
else
break;
end;
end;
if EndPos-StartPos<length(s) then
Result:=copy(s,StartPos,EndPos-StartPos)
else
Result:=s;
end;
function GetBracketLvl(const Src: string; StartPos, EndPos: integer;
NestedComments: boolean): integer;
var
SrcLen: Integer;
procedure ReadComment;
var
CommentEndPos: Integer;
begin
CommentEndPos:=FindCommentEnd(Src,StartPos,NestedComments);
if CommentEndPos>=EndPos then begin
// EndPos is in a comment
// -> count bracket lvl in comment
Result:=0;
case Src[StartPos] of
'{': inc(StartPos);
'(','/': inc(StartPos,2);
end;
end else
// continue after the comment
StartPos:=CommentEndPos;
end;
procedure ReadBrackets(ClosingBracket: Char);
begin
while StartPos<EndPos do begin
case Src[StartPos] of
'{','/':
ReadComment;
'(':
if (StartPos<SrcLen) and (Src[StartPos]='*') then
ReadComment
else begin
inc(Result);
inc(StartPos);
ReadBrackets(')');
end;
'[':
begin
inc(Result);
inc(StartPos);
ReadBrackets(']');
end;
')',']':
if (Result>0) then begin
if ClosingBracket=Src[StartPos] then
dec(Result) // for example: ()
else
Result:=0; // for example: [)
exit;
end;
end;
inc(StartPos);
end;
end;
begin
Result:=0;
SrcLen:=length(Src);
if (StartPos<1) then StartPos:=1;
if (StartPos>SrcLen) or (EndPos<StartPos) then exit;
if (EndPos>SrcLen) then EndPos:=SrcLen;
ReadBrackets(#0);
end;
function FindFirstLineEndInFrontOfInCode(const Source: string;
Position, MinPosition: integer; NestedComments: boolean): integer;
{ search backward for a line end
ignore line ends in comments
Result will be at the Start of the Line End
}
var
SrcStart: integer;
procedure ReadComment(var P: integer);
begin
case Source[P] of
'}':
begin
dec(P);
while (P>=SrcStart) and (Source[P]<>'{') do begin
if NestedComments and (Source[P] in ['}',')']) then
ReadComment(P)
else
dec(P);
end;
dec(P);
end;
')':
begin
dec(P);
if (P>=SrcStart) and (Source[P]='*') then begin
dec(P);
while (P>SrcStart)
and ((Source[P-1]<>'(') or (Source[P]<>'*')) do begin
if NestedComments and (Source[P] in ['}',')']) then
ReadComment(P)
else
dec(P);
end;
dec(P,2);
end;
end;
end;
end;
var TestPos: integer;
begin
Result:=Position;
SrcStart:=MinPosition;
if SrcStart<1 then SrcStart:=1;
while (Result>=SrcStart) do begin
case Source[Result] of
'}',')':
ReadComment(Result);
#10,#13:
begin
// test if it is a '//' comment
if (Result>SrcStart) and (Source[Result-1] in [#10,#13])
and (Source[Result]<>Source[Result-1]) then dec(Result);
TestPos:=Result-1;
while (TestPos>SrcStart) do begin
if (Source[TestPos]='/') and (Source[TestPos-1]='/') then begin
// this is a comment line end -> search further
break;
end else if Source[TestPos] in [#10,#13] then begin
// no comment, the line end ist really there :)
exit;
end else
dec(TestPos);
end;
Result:=TestPos;
end;
else
dec(Result);
end;
end;
end;
function ReplacementNeedsLineEnd(const Source: string;
FromPos, ToPos, NewLength, MaxLineLength: integer): boolean;
// test if old text contains a line end
// or if new line is too long
var LineStart, LineEnd: integer;
begin
GetLineStartEndAtPosition(Source,FromPos,LineStart,LineEnd);
Result:=((LineEnd>=FromPos) and (LineEnd<ToPos))
or ((LineEnd-LineStart-(ToPos-FromPos)+NewLength)>MaxLineLength);
end;
function CompareTextIgnoringSpace(const Txt1, Txt2: string;
CaseSensitive: boolean): integer;
begin
Result:=CompareTextIgnoringSpace(
PChar(Txt1),length(Txt1),PChar(Txt2),length(Txt2),
CaseSensitive);
end;
function CompareTextIgnoringSpace(Txt1: PChar; Len1: integer;
Txt2: PChar; Len2: integer; CaseSensitive: boolean): integer;
{ Txt1 Txt2 Result
A A 0
A B 1
A AB 1
A; A -1
}
var P1, P2: integer;
InIdentifier: boolean;
begin
P1:=0;
P2:=0;
InIdentifier:=false;
while (P1<Len1) and (P2<Len2) do begin
if (CaseSensitive and (Txt1[P1]=Txt2[P2]))
or ((not CaseSensitive) and (UpChars[Txt1[P1]]=UpChars[Txt2[P2]])) then
begin
inc(P1);
inc(P2);
end else begin
// different chars found
if InIdentifier and (IsIDChar[Txt1[P1]] xor IsIDChar[Txt2[P2]]) then begin
// one identifier is longer than the other
if IsIDChar[Txt1[P1]] then
// identifier in Txt1 is longer than in Txt2
Result:=-1
else
// identifier in Txt2 is longer than in Txt1
Result:=+1;
exit;
end else if (ord(Txt1[P1])<=ord(' ')) then begin
// ignore/skip spaces in Txt1
repeat
inc(P1);
until (P1>=Len1) or (ord(Txt1[P1])>ord(' '));
end else if (ord(Txt2[P2])<=ord(' ')) then begin
// ignore/skip spaces in Txt2
repeat
inc(P2);
until (P2>=Len2) or (ord(Txt2[P2])>ord(' '));
end else begin
// Txt1<>Txt2
if (CaseSensitive and (Txt1[P1]>Txt2[P2]))
or ((not CaseSensitive) and (UpChars[Txt1[P1]]>UpChars[Txt2[P2]])) then
Result:=-1
else
Result:=+1;
exit;
end;
end;
InIdentifier:=IsIDChar[Txt1[P1]];
end;
// one text was totally read -> check the rest of the other one
// skip spaces
while (P1<Len1) and (ord(Txt1[P1])<=ord(' ')) do
inc(P1);
while (P2<Len2) and (ord(Txt2[P2])<=ord(' ')) do
inc(P2);
if (P1>=Len1) then begin
// rest of P1 was only space
if (P2>=Len2) then
// rest of P2 was only space
Result:=0
else
// there is some text at the end of P2
Result:=1;
end else begin
// there is some text at the end of P1
Result:=-1
end;
end;
function CompareSubStrings(const Find, Txt: string;
FindStartPos, TxtStartPos, Len: integer; CaseSensitive: boolean): integer;
begin
Result:=CompareText(@Find[FindStartPos],Min(length(Find)-FindStartPos+1,Len),
@Txt[TxtStartPos],Min(length(Txt)-TxtStartPos+1,Len),
CaseSensitive);
end;
function FindNextIDEDirective(const ASource: string; StartPos: integer;
NestedComments: boolean): integer;
var
MaxPos: integer;
begin
MaxPos:=length(ASource);
Result:=StartPos;
while (Result<=MaxPos) do begin
case ASource[Result] of
'''':
begin
inc(Result);
while (Result<=MaxPos) do begin
if (ASource[Result]<>'''') then
inc(Result)
else begin
inc(Result);
break;
end;
end;
end;
'/':
begin
inc(Result);
if (Result<=MaxPos) and (ASource[Result]='/') then begin
// skip Delphi comment
while (Result<=MaxPos) and (not (ASource[Result] in [#10,#13])) do
inc(Result);
end;
end;
'{':
begin
if (Result<MaxPos) and (ASource[Result+1]='%') then
exit;
// skip pascal comment
Result:=FindCommentEnd(ASource,Result,NestedComments);
end;
'(':
begin
if (Result<MaxPos) and (ASource[Result+1]='*') then begin
// skip TP comment
Result:=FindCommentEnd(ASource,Result,NestedComments);
end else
inc(Result);
end;
else
inc(Result);
end;
end;
if Result>MaxPos+1 then Result:=MaxPos+1;
end;
function CleanCodeFromComments(const DirtyCode: string;
NestedComments: boolean): string;
var DirtyPos, CleanPos, DirtyLen: integer;
c: char;
procedure ReadComment(var P: integer);
begin
case DirtyCode[P] of
'{':
begin
inc(P);
while (P<=DirtyLen) and (DirtyCode[P]<>'}') do begin
if NestedComments and (DirtyCode[P] in ['{','(','/']) then
ReadComment(P)
else
inc(P);
end;
inc(P);
end;
'(':
begin
inc(P);
if (P<=DirtyLen) and (DirtyCode[P]='*') then begin
inc(P);
while (P<=DirtyLen-1)
and ((DirtyCode[P]<>'*') or (DirtyCode[P-1]<>')')) do begin
if NestedComments and (DirtyCode[P] in ['{','(','/']) then
ReadComment(P)
else
inc(P);
end;
inc(P,2);
end;
end;
'/':
begin
inc(P);
if (P<=DirtyLen) and (DirtyCode[P]='/') then begin
inc(P);
while (P<=DirtyLen)
and (not (DirtyCode[P] in [#10,#13])) do begin
if NestedComments and (DirtyCode[P] in ['{','(','/']) then
ReadComment(P)
else
inc(P);
end;
end;
end;
end;
end;
begin
DirtyLen:=length(DirtyCode);
SetLength(Result,DirtyLen);
DirtyPos:=1;
CleanPos:=1;
while (DirtyPos<=DirtyLen) do begin
c:=DirtyCode[DirtyPos];
if not (c in ['/','{','(']) then begin
Result[CleanPos]:=c;
inc(DirtyPos);
inc(CleanPos);
end else begin
ReadComment(DirtyPos);
end;
end;
SetLength(Result,CleanPos-1);
end;
function CompareIdentifiers(Identifier1, Identifier2: PChar): integer;
begin
if (Identifier1<>nil) then begin
if (Identifier2<>nil) then begin
while (UpChars[Identifier1[0]]=UpChars[Identifier2[0]]) do begin
if (IsIDChar[Identifier1[0]]) then begin
inc(Identifier1);
inc(Identifier2);
end else begin
Result:=0; // for example 'aaA;' 'aAa;'
exit;
end;
end;
if (IsIDChar[Identifier1[0]]) then begin
if (IsIDChar[Identifier2[0]]) then begin
if UpChars[Identifier1[0]]>UpChars[Identifier2[0]] then
Result:=-1 // for example 'aab' 'aaa'
else
Result:=1; // for example 'aaa' 'aab'
end else begin
Result:=-1; // for example 'aaa' 'aa;'
end;
end else begin
if (IsIDChar[Identifier2[0]]) then
Result:=1 // for example 'aa;' 'aaa'
else
Result:=0; // for example 'aa;' 'aa,'
end;
end else begin
Result:=-1; // for example 'aaa' nil
end;
end else begin
if (Identifier2<>nil) then begin
Result:=1; // for example nil 'bbb'
end else begin
Result:=0; // for example nil nil
end;
end;
end;
function ComparePrefixIdent(PrefixIdent, Identifier: PChar): boolean;
begin
if PrefixIdent<>nil then begin
if Identifier<>nil then begin
while UpChars[PrefixIdent^]=UpChars[Identifier^] do begin
inc(PrefixIdent);
inc(Identifier);
end;
Result:=not IsIDChar[PrefixIdent^];
end else begin
Result:=false;
end;
end else begin
Result:=true;
end;
end;
function GetIdentifier(Identifier: PChar): string;
var len: integer;
begin
if Identifier<>nil then begin
len:=0;
while (IsIdChar[Identifier[len]]) do inc(len);
SetLength(Result,len);
if len>0 then
Move(Identifier[0],Result[1],len);
end else
Result:='';
end;
function FindNextIdentifier(const Source: string; StartPos, MaxPos: integer
): integer;
begin
Result:=StartPos;
while (Result<=MaxPos) and (not IsIDStartChar[Source[Result]]) do
inc(Result);
end;
function GetBlockMinIndent(const Source: string;
StartPos, EndPos: integer): integer;
var
SrcLen: Integer;
p: Integer;
CurIndent: Integer;
begin
SrcLen:=length(Source);
if EndPos>SrcLen then EndPos:=SrcLen+1;
Result:=EndPos-StartPos;
p:=StartPos;
while p<=EndPos do begin
// skip line end and empty lines
while (p<EndPos) and (Source[p] in [#10,#13]) do
inc(p);
if (p>=EndPos) then break;
// count spaces at line start
CurIndent:=0;
while (p<EndPos) and (Source[p] in [#9,' ']) do begin
inc(p);
inc(CurIndent);
end;
if CurIndent<Result then Result:=CurIndent;
// skip rest of line
while (p<EndPos) and (not (Source[p] in [#10,#13])) do
inc(p);
end;
end;
function GetIndentStr(Indent: integer): string;
begin
SetLength(Result,Indent);
if Indent>0 then
FillChar(Result[1],length(Result),' ');
end;
procedure IndentText(const Source: string; Indent, TabWidth: integer;
var NewSource: string);
function UnindentTxt(CopyChars: boolean): integer;
var
Unindent: Integer;
SrcPos: Integer;
SrcLen: Integer;
NewSrcPos: Integer;
SkippedSpaces: Integer;
c: Char;
begin
Unindent:=-Indent;
SrcPos:=1;
SrcLen:=length(Source);
NewSrcPos:=1;
while SrcPos<=SrcLen do begin
// skip spaces at start of line
SkippedSpaces:=0;
while (SrcPos<=SrcLen) and (SkippedSpaces<Unindent) do begin
c:=Source[SrcPos];
if c=' ' then begin
inc(SkippedSpaces);
inc(SrcPos);
end else if c=#9 then begin
inc(SkippedSpaces,TabWidth);
inc(SrcPos);
end else
break;
end;
// deleting a tab can unindent too much, so insert some spaces
while SkippedSpaces>Unindent do begin
if CopyChars then
NewSource[NewSrcPos]:=' ';
inc(NewSrcPos);
dec(SkippedSpaces);
end;
// copy the rest of the line
while (SrcPos<=SrcLen) do begin
c:=Source[SrcPos];
// copy char
if CopyChars then
NewSource[NewSrcPos]:=Source[SrcPos];
inc(NewSrcPos);
inc(SrcPos);
if (c in [#10,#13]) then begin
// line end
if (SrcPos<=SrcLen) and (Source[SrcPos] in [#10,#13])
and (Source[SrcPos]<>Source[SrcPos-1]) then begin
if CopyChars then
NewSource[NewSrcPos]:=Source[SrcPos];
inc(NewSrcPos);
inc(SrcPos);
end;
break;
end;
end;
end;
Result:=NewSrcPos-1;
end;
var
LengthOfLastLine: integer;
LineEndCnt: Integer;
SrcPos: Integer;
SrcLen: Integer;
NewSrcPos: Integer;
c: Char;
NewSrcLen: Integer;
procedure AddIndent;
var
i: Integer;
begin
for i:=1 to Indent do begin
NewSource[NewSrcPos]:=' ';
inc(NewSrcPos);
end;
end;
begin
if (Indent=0) or (Source='') then begin
NewSource:=Source;
exit;
end;
if Indent>0 then begin
// indent text
LineEndCnt:=LineEndCount(Source,LengthOfLastLine);
if LengthOfLastLine>0 then inc(LineEndCnt);
SetLength(NewSource,LineEndCnt*Indent+length(Source));
SrcPos:=1;
SrcLen:=length(Source);
NewSrcPos:=1;
AddIndent;
while SrcPos<=SrcLen do begin
c:=Source[SrcPos];
// copy char
NewSource[NewSrcPos]:=Source[SrcPos];
inc(NewSrcPos);
inc(SrcPos);
if (c in [#10,#13]) then begin
// line end
if (SrcPos<=SrcLen) and (Source[SrcPos] in [#10,#13])
and (Source[SrcPos]<>Source[SrcPos-1]) then begin
NewSource[NewSrcPos]:=Source[SrcPos];
inc(NewSrcPos);
inc(SrcPos);
end;
if (SrcPos<=SrcLen) and (not (Source[SrcPos] in [#10,#13])) then begin
// next line is not empty -> indent
AddIndent;
end;
end;
end;
SetLength(NewSource,NewSrcPos-1);
end else begin
// unindent text
NewSrcLen:=UnindentTxt(false);
SetLength(NewSource,NewSrcLen);
UnindentTxt(true);
end;
end;
function LineEndCount(const Txt: string): integer;
var
LengthOfLastLine: integer;
begin
Result:=LineEndCount(Txt,LengthOfLastLine);
end;
function TrimCodeSpace(const ACode: string): string;
// turn all lineends and special chars to space
// space is combined to one char
// space which is not needed is removed.
// space is only needed between two words or between 2-char operators
var CodePos, ResultPos, CodeLen, SpaceEndPos: integer;
c1, c2: char;
begin
CodeLen:=length(ACode);
SetLength(Result,CodeLen);
CodePos:=1;
ResultPos:=1;
while CodePos<=CodeLen do begin
if ACode[CodePos]>#32 then begin
Result[ResultPos]:=ACode[CodePos];
inc(ResultPos);
inc(CodePos);
end else begin
SpaceEndPos:=CodePos;
while (SpaceEndPos<=CodeLen) and (ACode[SpaceEndPos]<=#32) do
inc(SpaceEndPos);
if (CodePos>1) and (SpaceEndPos<=CodeLen) then begin
c1:=ACode[CodePos-1];
c2:=ACode[SpaceEndPos];
if (IsIdChar[c1] and IsIdChar[c2])
// test for double char operators :=, +=, -=, /=, *=, <>, <=, >=, **, ><
or ((c2='=') and (c1 in [':','+','-','/','*','>','<']))
or ((c1='<') and (c2='>'))
or ((c1='>') and (c2='<'))
or ((c1='.') and (c2='.'))
or ((c1='*') and (c2='*'))
or ((c1='@') and (c2='@')) then
begin
// keep one space
Result[ResultPos]:=' ';
inc(ResultPos);
end;
end;
// skip space
CodePos:=SpaceEndPos;
end;
end;
SetLength(Result,ResultPos-1);
end;
function CodeIsOnlySpace(const ACode: string; FromPos, ToPos: integer): boolean;
var
SrcLen: integer;
CodePos: integer;
begin
Result:=true;
SrcLen:=length(ACode);
if ToPos>SrcLen then ToPos:=SrcLen;
CodePos:=FromPos;
while (CodePos<=ToPos) do begin
if ACode[CodePos] in [' ',#9,#10,#13] then
inc(CodePos)
else begin
Result:=false;
exit;
end;
end;
end;
function StringToPascalConst(const s: string): string;
// converts s to
function Convert(var DestStr: string): integer;
var
SrcLen, SrcPos, DestPos: integer;
c: char;
i: integer;
InString: Boolean;
begin
SrcLen:=length(s);
DestPos:=0;
InString:=false;
for SrcPos:=1 to SrcLen do begin
inc(DestPos);
c:=s[SrcPos];
if c>=' ' then begin
// normal char
if not InString then begin
if DestStr<>'' then DestStr[DestPos]:='''';
inc(DestPos);
InString:=true;
end;
if DestStr<>'' then
DestStr[DestPos]:=c;
if c='''' then begin
if DestStr<>'' then DestStr[DestPos]:='''';
inc(DestPos);
end;
end else begin
// special char
if InString then begin
if DestStr<>'' then DestStr[DestPos]:='''';
inc(DestPos);
InString:=false;
end;
if DestStr<>'' then
DestStr[DestPos]:='#';
inc(DestPos);
i:=ord(c);
if i>=100 then begin
if DestStr<>'' then
DestStr[DestPos]:=chr((i div 100)+ord('0'));
inc(DestPos);
end;
if i>=10 then begin
if DestStr<>'' then
DestStr[DestPos]:=chr(((i div 10) mod 10)+ord('0'));
inc(DestPos);
end;
if DestStr<>'' then
DestStr[DestPos]:=chr((i mod 10)+ord('0'));
end;
end;
if InString then begin
inc(DestPos);
if DestStr<>'' then DestStr[DestPos]:='''';
InString:=false;
end;
Result:=DestPos;
end;
var
NewLen: integer;
begin
Result:='';
NewLen:=Convert(Result);
if NewLen=length(s) then begin
Result:=s;
exit;
end;
SetLength(Result,NewLen);
Convert(Result);
end;
function SplitStringConstant(const StringConstant: string;
FirstLineLength, OtherLineLengths, Indent: integer;
const NewLine: string): string;
{ Split long string constants
If possible it tries to split on word boundaries.
Examples:
1.
'ABCDEFGHIJKLMNOPQRSTUVWXYZ',15,20,6
becomes: |'ABCDEFGHIJKLM'|
| +'NOPQRSTUVWX'|
| +'YZ'|
Result:
'ABCDEFGHIJKLM'#13#10 +'NOPQRSTUVWX'#13#10 +'YZ'
2.
'ABCDEFGHIJKLMNOPQRSTUVWXYZ',5,20,6
}
const
// string constant character types:
stctStart = 'S'; // ' start char
stctEnd = 'E'; // ' end char
stctWordStart = 'W'; // word char after non word char
stctQuotation1 = 'Q'; // first ' of a double ''
stctQuotation2 = 'M'; // second ' of a double ''
stctChar = 'C'; // normal character
stctHash = '#'; // hash
stctHashNumber = '0'; // hash number
stctLineEnd10 = #10; // hash number is 10
stctLineEnd13 = #13; // hash number is 13
stctJunk = 'j'; // junk
var
SrcLen: Integer;
Src: String;
CurLineMax: Integer;
ParsedSrc: string;
ParsedLen: integer;
SplitPos: integer;
procedure ParseSrc;
var
APos: Integer;
NumberStart: Integer;
Number: Integer;
begin
SetLength(ParsedSrc,CurLineMax+1);
APos:=1;
ParsedLen:=CurLineMax+1;
if ParsedLen>SrcLen then ParsedLen:=SrcLen;
while APos<=ParsedLen do begin
if Src[APos]='''' then begin
ParsedSrc[APos]:=stctStart;
inc(APos);
while APos<=ParsedLen do begin
if (Src[APos]='''') then begin
inc(APos);
if (APos<=ParsedLen) and (Src[APos]='''') then begin
// double ''
ParsedSrc[APos-1]:=stctQuotation1;
ParsedSrc[APos]:=stctQuotation2;
inc(APos);
end else begin
// end of string
ParsedSrc[APos-1]:=stctEnd;
break;
end;
end else begin
// normal char
if (Src[APos] in ['A'..'Z','a'..'z'])
and (APos>1)
and (ParsedSrc[APos-1]=stctChar)
and (not (Src[APos-1] in ['A'..'Z','a'..'z'])) then
ParsedSrc[APos]:=stctWordStart
else
ParsedSrc[APos]:=stctChar;
inc(APos);
end;
end;
end else if Src[APos]='#' then begin
ParsedSrc[APos]:=stctHash;
inc(APos);
NumberStart:=APos;
if (APos<=ParsedLen) then begin
// parse character number
if IsNumberChar[Src[APos]] then begin
// parse decimal number
while (APos<=ParsedLen) and IsNumberChar[Src[APos]] do begin
ParsedSrc[APos]:=stctHashNumber;
inc(APos);
end;
end else if Src[APos]='$' then begin
// parse hex number
while (APos<=ParsedLen) and IsHexNumberChar[Src[APos]] do begin
ParsedSrc[APos]:=stctHashNumber;
inc(APos);
end;
end;
Number:=StrToIntDef(copy(Src,NumberStart,APos-NumberStart),-1);
if (Number=10) or (Number=13) then begin
while NumberStart<APos do begin
ParsedSrc[NumberStart]:=chr(Number);
inc(NumberStart);
end;
end;
end;
end else begin
// junk
ParsedSrc[APos]:=stctJunk;
inc(APos);
end;
end;
end;
function SearchCharLeftToRight(c: char): integer;
begin
Result:=1;
while (Result<=ParsedLen) and (ParsedSrc[Result]<>c) do
inc(Result);
if Result>ParsedLen then Result:=-1;
end;
function SearchDiffCharLeftToRight(StartPos: integer): integer;
begin
Result:=StartPos+1;
while (Result<=ParsedLen) and (ParsedSrc[Result]=ParsedSrc[StartPos]) do
inc(Result);
end;
procedure SplitAtNewLineCharConstant;
var
HashPos: Integer;
NewSplitPos: Integer;
begin
if SplitPos>0 then exit;
// check if there is a newline character constant
HashPos:=SearchCharLeftToRight(stctLineEnd10)-1;
if (HashPos<1) then begin
HashPos:=SearchCharLeftToRight(stctLineEnd13)-1;
if HashPos<1 then exit;
end;
NewSplitPos:=SearchDiffCharLeftToRight(HashPos+1);
if NewSplitPos>CurLineMax then exit;
// check if this is a double new line char const #13#10
if (NewSplitPos<ParsedLen) and (ParsedSrc[NewSplitPos]=stctHash)
and (ParsedSrc[NewSplitPos+1] in [stctLineEnd10,stctLineEnd13])
and (ParsedSrc[NewSplitPos+1]<>ParsedSrc[NewSplitPos-1])
then begin
NewSplitPos:=SearchDiffCharLeftToRight(NewSplitPos+1);
if NewSplitPos>CurLineMax then exit;
end;
SplitPos:=NewSplitPos;
end;
procedure SplitBetweenConstants;
var
APos: Integer;
begin
if SplitPos>0 then exit;
APos:=CurLineMax;
while (APos>=2) do begin
if (ParsedSrc[APos] in [stctHash,stctStart]) then begin
SplitPos:=APos;
exit;
end;
dec(APos);
end;
end;
procedure SplitAtWordBoundary;
var
APos: Integer;
begin
if SplitPos>0 then exit;
APos:=CurLineMax-1;
while (APos>2) and (APos>(CurLineMax shr 1)) do begin
if (ParsedSrc[APos]=stctWordStart) then begin
SplitPos:=APos;
exit;
end;
dec(APos);
end;
end;
procedure SplitDefault;
begin
if SplitPos>0 then exit;
SplitPos:=CurLineMax;
while (SplitPos>1) do begin
if (ParsedSrc[SplitPos]
in [stctStart,stctWordStart,stctChar,stctHash,stctJunk])
then
break;
dec(SplitPos);
end;
end;
procedure Split;
var
CurIndent: Integer;
begin
// move left split side from Src to Result
//writeln('Split: SplitPos=',SplitPos,' ',copy(Src,SplitPos-5,6));
Result:=Result+copy(Src,1,SplitPos-1);
Src:=copy(Src,SplitPos,length(Src)-SplitPos+1);
if ParsedSrc[SplitPos] in [stctWordStart,stctChar] then begin
// line break in string constant
// -> add ' to end of last line and to start of next
Result:=Result+'''';
Src:=''''+Src;
end;
SrcLen:=length(Src);
// calculate indent size for next line
CurLineMax:=OtherLineLengths;
CurIndent:=Indent;
if CurIndent>(CurLineMax-10) then
CurIndent:=CurLineMax-10;
if CurIndent<0 then CurIndent:=0;
// add indent spaces to Result
Result:=Result+NewLine+GetIndentStr(CurIndent)+'+';
// calculate next maximum line length
CurLineMax:=CurLineMax-CurIndent-1;
end;
begin
Result:='';
if FirstLineLength<5 then FirstLineLength:=5;
if OtherLineLengths<5 then OtherLineLengths:=5;
Src:=StringConstant;
SrcLen:=length(Src);
CurLineMax:=FirstLineLength;
//writeln('SplitStringConstant FirstLineLength=',FirstLineLength,
//' OtherLineLengths=',OtherLineLengths,' Indent=',Indent,' ');
repeat
//writeln('SrcLen=',SrcLen,' CurMaxLine=',CurLineMax);
//writeln('Src="',Src,'"');
//writeln('Result="',Result,'"');
if SrcLen<=CurLineMax then begin
// line fits
Result:=Result+Src;
break;
end;
// split line -> search nice split position
ParseSrc;
SplitPos:=0;
SplitAtNewLineCharConstant;
SplitBetweenConstants;
SplitAtWordBoundary;
SplitDefault;
Split;
until false;
//writeln('END Result="',Result,'"');
//writeln('SplitStringConstant END---------------------------------');
end;
procedure RaiseCatchableException(const Msg: string);
begin
{ Raises an exception.
gdb does not catch fpc Exception objects, therefore this procedure raises
a standard AV which is catched by gdb. }
writeln('ERROR in CodeTools: ',Msg);
// creates an exception, that gdb catches:
writeln('Creating gdb catchable error:');
if (length(Msg) div (length(Msg) div 10000))=0 then ;
end;
function CountNeededLineEndsToAddForward(const Src: string;
StartPos, MinLineEnds: integer): integer;
var c:char;
SrcLen: integer;
begin
Result:=MinLineEnds;
if (StartPos<1) or (Result=0) then exit;
SrcLen:=length(Src);
while (StartPos<=SrcLen) do begin
c:=Src[StartPos];
if c in [#10,#13] then begin
dec(Result);
if Result=0 then break;
inc(StartPos);
if (StartPos<=SrcLen)
and (Src[StartPos] in [#10,#13])
and (Src[StartPos]<>c) then
inc(StartPos);
end else if IsSpaceChar[c] then
inc(StartPos)
else
break;
end;
end;
function CountNeededLineEndsToAddBackward(
const Src: string; StartPos, MinLineEnds: integer): integer;
var c:char;
SrcLen: integer;
begin
Result:=MinLineEnds;
SrcLen:=length(Src);
if (StartPos>SrcLen) or (Result=0) then exit;
while (StartPos>=1) do begin
c:=Src[StartPos];
if c in [#10,#13] then begin
dec(Result);
if Result=0 then break;
dec(StartPos);
if (StartPos>=1)
and (Src[StartPos] in [#10,#13])
and (Src[StartPos]<>c) then
dec(StartPos);
end else if IsSpaceChar[c] then
dec(StartPos)
else
break;
end;
end;
function CompareText(Txt1: PChar; Len1: integer; Txt2: PChar; Len2: integer;
CaseSensitive: boolean): integer;
begin
if CaseSensitive then begin
while (Len1>0) and (Len2>0) do begin
if Txt1^=Txt2^ then begin
inc(Txt1);
dec(Len1);
inc(Txt2);
dec(Len2);
end else begin
if Txt1^<Txt2^ then
Result:=1
else
Result:=-1;
exit;
end;
end;
end else begin
while (Len1>0) and (Len2>0) do begin
if UpChars[Txt1^]=UpChars[Txt2^] then begin
inc(Txt1);
dec(Len1);
inc(Txt2);
dec(Len2);
end else begin
if UpChars[Txt1^]<UpChars[Txt2^] then
Result:=1
else
Result:=-1;
exit;
end;
end;
end;
if Len1>Len2 then
Result:=-1
else if Len1<Len2 then
Result:=1
else
Result:=0;
end;
function CompareText(Txt1: PChar; Len1: integer; Txt2: PChar; Len2: integer;
CaseSensitive, IgnoreSpace: boolean): integer;
begin
if IgnoreSpace then
Result:=CompareTextIgnoringSpace(Txt1,Len1,Txt2,Len2,CaseSensitive)
else
Result:=CompareText(Txt1,Len1,Txt2,Len2,CaseSensitive);
end;
//=============================================================================
procedure BasicCodeToolInit;
var c: char;
begin
for c:=#0 to #255 do begin
IsIDChar[c]:=(c in ['a'..'z','A'..'Z','0'..'9','_']);
IsIDStartChar[c]:=(c in ['a'..'z','A'..'Z','_']);
IsSpaceChar[c]:=c in [#0..#32];
IsNumberChar[c]:=c in ['0'..'9'];
IsHexNumberChar[c]:=c in ['0'..'9','A'..'Z','a'..'z'];
end;
end;
initialization
BasicCodeToolInit;
end.
Reference in New Issue View Git Blame Copy Permalink