mirror of
https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-06-04 12:38:36 +02:00
41a57028b9
to the way the shortstring helpers for i386 are written, they are
still handled by the old code (reason: fpc_shortstr_compare returns
results in the flags instead of in eax and fpc_shortstr_concat
has wierd parameter conventions). The compilerproc stuff should work
fine with the generic implementations though.
* removed some nested comments warnings
893 lines
24 KiB
PHP
893 lines
24 KiB
PHP
{
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$Id$
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This file is part of the Free Pascal run time library.
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Copyright (c) 1999-2000 by Michael Van Canneyt,
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member of the Free Pascal development team.
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This file implements AnsiStrings for FPC
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See the file COPYING.FPC, included in this distribution,
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for details about the copyright.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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**********************************************************************}
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{ This will release some functions for special shortstring support }
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{ define EXTRAANSISHORT}
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{
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This file contains the implementation of the AnsiString type,
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and all things that are needed for it.
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AnsiString is defined as a 'silent' pchar :
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a pchar that points to :
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@-12 : Longint for maximum size;
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@-8 : Longint for size;
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@-4 : Longint for reference count;
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@ : String + Terminating #0;
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Pchar(Ansistring) is a valid typecast.
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So AS[i] is converted to the address @AS+i-1.
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Constants should be assigned a reference count of -1
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Meaning that they can't be disposed of.
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}
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Type
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PAnsiRec = ^TAnsiRec;
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TAnsiRec = Packed Record
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Maxlen,
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len,
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ref : Longint;
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First : Char;
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end;
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Const
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AnsiRecLen = SizeOf(TAnsiRec);
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FirstOff = SizeOf(TAnsiRec)-1;
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{****************************************************************************
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Internal functions, not in interface.
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****************************************************************************}
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{$ifdef AnsiStrDebug}
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Procedure DumpAnsiRec(S : Pointer);
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begin
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If S=Nil then
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Writeln ('String is nil')
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Else
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Begin
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With PAnsiRec(S-Firstoff)^ do
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begin
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Write ('(Maxlen: ',maxlen);
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Write (' Len:',len);
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Writeln (' Ref: ',ref,')');
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end;
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end;
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end;
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{$endif}
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Function NewAnsiString(Len : Longint) : Pointer;
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{
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Allocate a new AnsiString on the heap.
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initialize it to zero length and reference count 1.
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}
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Var
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P : Pointer;
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begin
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{ Also add +1 for a terminating zero }
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GetMem(P,Len+AnsiRecLen);
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If P<>Nil then
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begin
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PAnsiRec(P)^.Maxlen:=Len; { Maximal length }
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PAnsiRec(P)^.Len:=0; { Initial length }
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PAnsiRec(P)^.Ref:=1; { Set reference count }
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PAnsiRec(P)^.First:=#0; { Terminating #0 }
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P:=P+FirstOff; { Points to string now }
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end;
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NewAnsiString:=P;
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end;
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Procedure DisposeAnsiString(Var S : Pointer);
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{
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Deallocates a AnsiString From the heap.
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}
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begin
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If S=Nil then
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exit;
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Dec (Longint(S),FirstOff);
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FreeMem (S);
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S:=Nil;
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end;
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Procedure fpc_AnsiStr_Decr_Ref (Var S : Pointer);[Public,Alias:'FPC_ANSISTR_DECR_REF']; {$ifdef hascompilerproc} compilerproc; {$endif}
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{
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Decreases the ReferenceCount of a non constant ansistring;
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If the reference count is zero, deallocate the string;
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}
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Type
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plongint = ^longint;
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Var
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l : plongint;
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Begin
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{ Zero string }
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If S=Nil then exit;
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{ check for constant strings ...}
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l:=@PANSIREC(S-FirstOff)^.Ref;
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If l^<0 then exit;
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{ declocked does a MT safe dec and returns true, if the counter is 0 }
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If declocked(l^) then
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{ Ref count dropped to zero }
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DisposeAnsiString (S); { Remove...}
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{ this pointer is not valid anymore, so set it to zero }
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S:=nil;
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end;
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{$ifdef hascompilerproc}
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{ also define alias for internal use in the system unit }
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Procedure fpc_AnsiStr_Decr_Ref (Var S : Pointer); [external name 'FPC_ANSISTR_DECR_REF'];
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{$endif hascompilerproc}
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Procedure fpc_AnsiStr_Incr_Ref (Var S : Pointer);[Public,Alias:'FPC_ANSISTR_INCR_REF']; {$ifdef hascompilerproc} compilerproc; {$endif}
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Begin
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If S=Nil then
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exit;
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{ Let's be paranoid : Constant string ??}
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If PAnsiRec(S-FirstOff)^.Ref<0 then exit;
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inclocked(PAnsiRec(S-FirstOff)^.Ref);
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end;
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{$ifdef hascompilerproc}
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{ also define alias which can be used inside the system unit }
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Procedure fpc_AnsiStr_Incr_Ref (Var S : Pointer); [external name 'FPC_ANSISTR_INCR_REF'];
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{$endif hascompilerproc}
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Procedure fpc_AnsiStr_Assign (Var S1 : Pointer;S2 : Pointer);[Public,Alias:'FPC_ANSISTR_ASSIGN']; {$ifdef hascompilerproc} compilerproc; {$endif}
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{
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Assigns S2 to S1 (S1:=S2), taking in account reference counts.
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}
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begin
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If S2<>nil then
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If PAnsiRec(S2-FirstOff)^.Ref>0 then
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inclocked(PAnsiRec(S2-FirstOff)^.ref);
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{ Decrease the reference count on the old S1 }
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fpc_ansistr_decr_ref (S1);
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{ And finally, have S1 pointing to S2 (or its copy) }
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S1:=S2;
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end;
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{$ifdef hascompilerproc}
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{ alias for internal use }
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Procedure fpc_AnsiStr_Assign (Var S1 : Pointer;S2 : Pointer);[external name 'FPC_ANSISTR_ASSIGN'];
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{$endif hascompilerproc}
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{$ifdef hascompilerproc}
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function fpc_AnsiStr_Concat (const S1,S2 : AnsiString): ansistring; compilerproc;
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var
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S3: ansistring absolute result;
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{$else hascompilerproc}
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Procedure fpc_AnsiStr_Concat (const S1,S2 : ansistring;var S3 : ansistring);[Public, alias: 'FPC_ANSISTR_CONCAT'];
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{$endif hascompilerproc}
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{
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Concatenates 2 AnsiStrings : S1+S2.
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Result Goes to S3;
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}
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Var
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Size,Location : Longint;
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begin
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{ only assign if s1 or s2 is empty }
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if (S1='') then
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s3 := s2
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else
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if (S2='') then
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s3 := s1
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else
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begin
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Size:=length(S2);
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Location:=Length(S1);
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SetLength (S3,Size+Location);
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Move (S1[1],S3[1],Location);
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Move (S2[1],S3[location+1],Size+1);
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end;
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end;
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{$ifdef EXTRAANSISHORT}
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Procedure AnsiStr_ShortStr_Concat (Var S1: AnsiString; Var S2 : ShortString);
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{
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Concatenates a Ansi with a short string; : S2 + S2
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}
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Var
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Size,Location : Longint;
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begin
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Size:=Length(S2);
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Location:=Length(S1);
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If Size=0 then
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exit;
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{ Setlength takes case of uniqueness
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and alllocated memory. We need to use length,
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to take into account possibility of S1=Nil }
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SetLength (S1,Size+Length(S1));
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Move (S2[1],Pointer(Pointer(S1)+Location)^,Size);
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PByte( Pointer(S1)+length(S1) )^:=0; { Terminating Zero }
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end;
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{$endif EXTRAANSISHORT}
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{ the following declaration has exactly the same effect as }
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{ procedure fpc_AnsiStr_To_ShortStr (Var S1 : ShortString;S2 : Pointer); }
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{ which is what the old helper was, so we don't need an extra implementation }
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{ of the old helper (JM) }
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function fpc_AnsiStr_To_ShortStr (high_of_res: longint;const S2 : Ansistring): shortstring;[Public, alias: 'FPC_ANSISTR_TO_SHORTSTR']; {$ifdef hascompilerproc} compilerproc; {$endif}
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{
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Converts a AnsiString to a ShortString;
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}
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Var
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Size : Longint;
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begin
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if S2='' then
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fpc_AnsiStr_To_ShortStr:=''
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else
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begin
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Size:=Length(S2);
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If Size>high_of_res then
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Size:=high_of_res;
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Move (S2[1],fpc_AnsiStr_To_ShortStr[1],Size);
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byte(fpc_AnsiStr_To_ShortStr[0]):=Size;
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end;
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end;
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Function fpc_ShortStr_To_AnsiStr (Const S2 : ShortString): ansistring; {$ifdef hascompilerproc} compilerproc; {$endif}
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{
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Converts a ShortString to a AnsiString;
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}
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Var
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Size : Longint;
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begin
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Size:=Length(S2);
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Setlength (fpc_ShortStr_To_AnsiStr,Size);
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if Size>0 then
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Move(S2[1],Pointer(fpc_ShortStr_To_AnsiStr)^,Size);
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end;
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{ old style helper }
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{$ifndef hascompilerproc}
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Procedure fpc_ShortStr_To_AnsiStr (Var S1 : Pointer; Const S2 : ShortString);[Public, alias: 'FPC_SHORTSTR_TO_ANSISTR'];
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begin
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s1 := pointer(fpc_ShortStr_To_AnsiStr(s2));
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end;
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{$endif hascompilerproc}
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Function fpc_Char_To_AnsiStr(const c : Char): AnsiString; {$ifdef hascompilerproc} compilerproc; {$endif}
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{
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Converts a Char to a AnsiString;
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}
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begin
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if c = #0 then
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{ result is automatically set to '' }
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exit;
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Setlength (fpc_Char_To_AnsiStr,1);
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PByte(Pointer(fpc_Char_To_AnsiStr))^:=byte(c);
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{ Terminating Zero }
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PByte(Pointer(fpc_Char_To_AnsiStr)+1)^:=0;
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end;
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{ old style helper }
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{$ifndef hascompilerproc}
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Procedure fpc_Char_To_AnsiStr(var S1 : Pointer; c : Char);[Public, alias: 'FPC_CHAR_TO_ANSISTR'];
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begin
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s1 := pointer(fpc_Char_To_AnsiStr(c));
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end;
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{$endif hascompilerproc}
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Function fpc_PChar_To_AnsiStr(const p : pchar): ansistring; {$ifdef hascompilerproc} compilerproc; {$endif}
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Var
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L : Longint;
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begin
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if (not assigned(p)) or (p[0]=#0) Then
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{ result is automatically set to '' }
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exit;
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l:=IndexChar(p^,-1,#0);
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SetLength(fpc_PChar_To_AnsiStr,L);
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Move (P[0],Pointer(fpc_PChar_To_AnsiStr)^,L)
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end;
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{ old style helper }
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{$ifndef hascompilerproc}
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Procedure fpc_PChar_To_AnsiStr(var a : ansistring;p : pchar);[Public,Alias : 'FPC_PCHAR_TO_ANSISTR']; {$ifdef hascompilerproc} compilerproc; {$endif}
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begin
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pointer(a) := pointer(fpc_PChar_To_AnsiStr(p));
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end;
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{$endif hascompilerproc}
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Function fpc_CharArray_To_AnsiStr(const arr: array of char): ansistring; {$ifdef hascompilerproc} compilerproc; {$endif}
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var
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i : longint;
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begin
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if arr[0]=#0 Then
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{ result is automatically set to '' }
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exit;
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i:=IndexChar(arr,high(arr)+1,#0);
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if i = -1 then
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i := high(arr)+1;
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SetLength(fpc_CharArray_To_AnsiStr,i);
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Move (arr[0],Pointer(fpc_CharArray_To_AnsiStr)^,i);
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end;
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{ old style helper }
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{$ifndef hascompilerproc}
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{ the declaration below is the same as }
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{ which is what the old helper was (we need the parameter as "array of char" type }
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{ so we can pass it to the new style helper (JM) }
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Procedure fpc_CharArray_To_AnsiStr(var a : ansistring; p: pointer; len: longint);[Public,Alias : 'FPC_CHARARRAY_TO_ANSISTR']; {$ifdef hascompilerproc} compilerproc; {$endif}
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var
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src: pchar;
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i: longint;
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begin
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src := pchar(p);
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if src[0]=#0 Then
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{ result is automatically set to '' }
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begin
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pointer(a) := nil;
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exit;
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end;
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i:=IndexChar(src^,len,#0);
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if i = -1 then
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i := len;
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pointer(a) := NewAnsiString(i);
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Move (src^,a[1],i);
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end;
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{$endif not hascompilerproc}
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{$ifdef hascompilerproc}
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{ note: inside the compiler, the resulttype is modified to be the length }
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{ of the actual chararray to which we convert (JM) }
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function fpc_ansistr_to_chararray(arraysize: longint; const src: ansistring): fpc_big_chararray; [public, alias: 'FPC_ANSISTR_TO_CHARARRAY']; compilerproc;
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var
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len: longint;
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begin
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len := length(src);
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if len > arraysize then
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len := arraysize;
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{ make sure we don't try to access element 1 of the ansistring if it's nil }
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if len > 0 then
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move(src[1],fpc_ansistr_to_chararray[0],len);
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fillchar(fpc_ansistr_to_chararray[len],arraysize-len,0);
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end;
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{$endif hascompilerproc}
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Function fpc_AnsiStr_Compare(const S1,S2 : AnsiString): Longint;[Public,Alias : 'FPC_ANSISTR_COMPARE']; {$ifdef hascompilerproc} compilerproc; {$endif}
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{
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Compares 2 AnsiStrings;
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The result is
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<0 if S1<S2
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0 if S1=S2
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>0 if S1>S2
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}
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Var
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MaxI,Temp : Longint;
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begin
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if pointer(S1)=pointer(S2) then
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begin
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fpc_AnsiStr_Compare:=0;
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exit;
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end;
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Maxi:=Length(S1);
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temp:=Length(S2);
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If MaxI>Temp then
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MaxI:=Temp;
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Temp:=CompareByte(S1[1],S2[1],MaxI);
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if temp=0 then
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temp:=Length(S1)-Length(S2);
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fpc_AnsiStr_Compare:=Temp;
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end;
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Procedure fpc_AnsiStr_CheckZero(p : pointer);[Public,Alias : 'FPC_ANSISTR_CHECKZERO']; {$ifdef hascompilerproc} compilerproc; {$endif}
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begin
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if p=nil then
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HandleErrorFrame(201,get_frame);
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end;
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Procedure fpc_AnsiStr_CheckRange(len,index : longint);[Public,Alias : 'FPC_ANSISTR_RANGECHECK']; {$ifdef hascompilerproc} compilerproc; {$endif}
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begin
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if (index>len) or (Index<1) then
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HandleErrorFrame(201,get_frame);
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end;
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{$ifndef INTERNSETLENGTH}
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Procedure SetLength (Var S : AnsiString; l : Longint);
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{$else INTERNSETLENGTH}
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Procedure fpc_AnsiStr_SetLength (Var S : AnsiString; l : Longint);[Public,Alias : 'FPC_ANSISTR_SETLENGTH']; {$ifdef hascompilerproc} compilerproc; {$endif}
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{$endif INTERNSETLENGTH}
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{
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Sets The length of string S to L.
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Makes sure S is unique, and contains enough room.
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}
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Var
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Temp : Pointer;
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movelen: longint;
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begin
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if (l>0) then
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begin
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if Pointer(S)=nil then
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begin
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{ Need a complete new string...}
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Pointer(s):=NewAnsiString(l);
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end
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else
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If (PAnsiRec(Pointer(S)-FirstOff)^.Maxlen < L) or
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(PAnsiRec(Pointer(S)-FirstOff)^.Ref <> 1) then
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begin
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{ Reallocation is needed... }
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Temp:=Pointer(NewAnsiString(L));
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if Length(S)>0 then
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begin
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if l < succ(length(s)) then
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movelen := l
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{ also move terminating null }
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else movelen := succ(length(s));
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Move(Pointer(S)^,Temp^,movelen);
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end;
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fpc_ansistr_decr_ref(Pointer(S));
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Pointer(S):=Temp;
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end;
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{ Force nil termination in case it gets shorter }
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PByte(Pointer(S)+l)^:=0;
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PAnsiRec(Pointer(S)-FirstOff)^.Len:=l;
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end
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else
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begin
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{ Length=0 }
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if Pointer(S)<>nil then
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fpc_ansistr_decr_ref (Pointer(S));
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Pointer(S):=Nil;
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end;
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end;
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{$ifdef EXTRAANSISHORT}
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Function fpc_AnsiStr_ShortStr_Compare (Var S1 : Pointer; Var S2 : ShortString): Longint; {$ifdef hascompilerproc} compilerproc; {$endif}
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{
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Compares a AnsiString with a ShortString;
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The result is
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<0 if S1<S2
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0 if S1=S2
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>0 if S1>S2
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}
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Var
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i,MaxI,Temp : Longint;
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begin
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Temp:=0;
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i:=0;
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MaxI:=Length(AnsiString(S1));
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if MaxI>byte(S2[0]) then
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MaxI:=Byte(S2[0]);
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While (i<MaxI) and (Temp=0) do
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begin
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Temp:= PByte(S1+I)^ - Byte(S2[i+1]);
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inc(i);
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end;
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AnsiStr_ShortStr_Compare:=Temp;
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end;
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{$endif EXTRAANSISHORT}
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{*****************************************************************************
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Public functions, In interface.
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*****************************************************************************}
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{$ifndef INTERNLENGTH}
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Function Length (Const S : AnsiString) : Longint;
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{
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Returns the length of an AnsiString.
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Takes in acount that zero strings are NIL;
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}
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begin
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If Pointer(S)=Nil then
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Length:=0
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else
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Length:=PAnsiRec(Pointer(S)-FirstOff)^.Len;
|
|
end;
|
|
{$endif INTERNLENGTH}
|
|
|
|
|
|
{ overloaded version of UniqueString for interface }
|
|
Procedure UniqueString(Var S : AnsiString); [external name 'FPC_ANSISTR_UNIQUE'];
|
|
|
|
Procedure fpc_ansistr_Unique(Var S : AnsiString); [Public,Alias : 'FPC_ANSISTR_UNIQUE']; {$ifdef hascompilerproc} compilerproc; {$endif}
|
|
{
|
|
Make sure reference count of S is 1,
|
|
using copy-on-write semantics.
|
|
}
|
|
Var
|
|
SNew : Pointer;
|
|
L : Longint;
|
|
begin
|
|
If Pointer(S)=Nil then
|
|
exit;
|
|
if PAnsiRec(Pointer(S)-Firstoff)^.Ref<>1 then
|
|
begin
|
|
L:=PAnsiRec(Pointer(S)-FirstOff)^.len;
|
|
SNew:=NewAnsiString (L);
|
|
Move (Pointer(S)^,SNew^,L+1);
|
|
PAnsiRec(SNew-FirstOff)^.len:=L;
|
|
fpc_ansistr_decr_ref (Pointer(S)); { Thread safe }
|
|
Pointer(S):=SNew;
|
|
end;
|
|
end;
|
|
|
|
|
|
Function Copy (Const S : AnsiString; Index,Size : Longint) : AnsiString;
|
|
var
|
|
ResultAddress : Pointer;
|
|
begin
|
|
ResultAddress:=Nil;
|
|
dec(index);
|
|
if Index < 0 then
|
|
Index := 0;
|
|
{ Check Size. Accounts for Zero-length S, the double check is needed because
|
|
Size can be maxint and will get <0 when adding index }
|
|
if (Size>Length(S)) or
|
|
(Index+Size>Length(S)) then
|
|
Size:=Length(S)-Index;
|
|
If Size>0 then
|
|
begin
|
|
If Index<0 Then
|
|
Index:=0;
|
|
ResultAddress:=Pointer(NewAnsiString (Size));
|
|
if ResultAddress<>Nil then
|
|
begin
|
|
Move (Pointer(Pointer(S)+index)^,ResultAddress^,Size);
|
|
PAnsiRec(ResultAddress-FirstOff)^.Len:=Size;
|
|
PByte(ResultAddress+Size)^:=0;
|
|
end;
|
|
end;
|
|
Pointer(Copy):=ResultAddress;
|
|
end;
|
|
|
|
|
|
Function Pos (Const Substr : AnsiString; Const Source : AnsiString) : Longint;
|
|
var
|
|
i,MaxLen : StrLenInt;
|
|
pc : pchar;
|
|
begin
|
|
Pos:=0;
|
|
if Length(SubStr)>0 then
|
|
begin
|
|
MaxLen:=Length(source)-Length(SubStr);
|
|
i:=0;
|
|
pc:=@source[1];
|
|
while (i<=MaxLen) do
|
|
begin
|
|
inc(i);
|
|
if (SubStr[1]=pc^) and
|
|
(CompareChar(Substr[1],pc^,Length(SubStr))=0) then
|
|
begin
|
|
Pos:=i;
|
|
exit;
|
|
end;
|
|
inc(pc);
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
|
|
{ Faster version for a char alone. Must be implemented because }
|
|
{ pos(c: char; const s: shortstring) also exists, so otherwise }
|
|
{ using pos(char,pchar) will always call the shortstring version }
|
|
{ (exact match for first argument), also with $h+ (JM) }
|
|
Function Pos (c : Char; Const s : AnsiString) : Longint;
|
|
var
|
|
i: longint;
|
|
pc : pchar;
|
|
begin
|
|
pc:=@s[1];
|
|
for i:=1 to length(s) do
|
|
begin
|
|
if pc^=c then
|
|
begin
|
|
pos:=i;
|
|
exit;
|
|
end;
|
|
inc(pc);
|
|
end;
|
|
pos:=0;
|
|
end;
|
|
|
|
|
|
Function fpc_Val_Real_AnsiStr(Const S : AnsiString; Var Code : ValSInt): ValReal; [public, alias:'FPC_VAL_REAL_ANSISTR']; {$ifdef hascompilerproc} compilerproc; {$endif}
|
|
Var
|
|
SS : String;
|
|
begin
|
|
fpc_Val_Real_AnsiStr := 0;
|
|
if length(S) > 255 then
|
|
code := 256
|
|
else
|
|
begin
|
|
SS := S;
|
|
Val(SS,fpc_Val_Real_AnsiStr,code);
|
|
end;
|
|
end;
|
|
|
|
|
|
Function fpc_Val_UInt_AnsiStr (Const S : AnsiString; Var Code : ValSInt): ValUInt; [public, alias:'FPC_VAL_UINT_ANSISTR']; {$ifdef hascompilerproc} compilerproc; {$endif}
|
|
Var
|
|
SS : ShortString;
|
|
begin
|
|
fpc_Val_UInt_AnsiStr := 0;
|
|
if length(S) > 255 then
|
|
code := 256
|
|
else
|
|
begin
|
|
SS := S;
|
|
Val(SS,fpc_Val_UInt_AnsiStr,code);
|
|
end;
|
|
end;
|
|
|
|
|
|
Function fpc_Val_SInt_AnsiStr (DestSize: longint; Const S : AnsiString; Var Code : ValSInt): ValSInt; [public, alias:'FPC_VAL_SINT_ANSISTR']; {$ifdef hascompilerproc} compilerproc; {$endif}
|
|
Var
|
|
SS : ShortString;
|
|
begin
|
|
fpc_Val_SInt_AnsiStr:=0;
|
|
if length(S)>255 then
|
|
code:=256
|
|
else
|
|
begin
|
|
SS := S;
|
|
fpc_Val_SInt_AnsiStr := fpc_Val_SInt_ShortStr(DestSize,SS,Code);
|
|
end;
|
|
end;
|
|
|
|
Function fpc_Val_qword_AnsiStr (Const S : AnsiString; Var Code : ValSInt): qword; [public, alias:'FPC_VAL_QWORD_ANSISTR']; {$ifdef hascompilerproc} compilerproc; {$endif}
|
|
Var
|
|
SS : ShortString;
|
|
begin
|
|
fpc_Val_qword_AnsiStr:=0;
|
|
if length(S)>255 then
|
|
code:=256
|
|
else
|
|
begin
|
|
SS := S;
|
|
Val(SS,fpc_Val_qword_AnsiStr,Code);
|
|
end;
|
|
end;
|
|
|
|
|
|
Function fpc_Val_int64_AnsiStr (Const S : AnsiString; Var Code : ValSInt): Int64; [public, alias:'FPC_VAL_INT64_ANSISTR']; {$ifdef hascompilerproc} compilerproc; {$endif}
|
|
Var
|
|
SS : ShortString;
|
|
begin
|
|
fpc_Val_int64_AnsiStr:=0;
|
|
if length(S)>255 then
|
|
code:=256
|
|
else
|
|
begin
|
|
SS := s;
|
|
Val(SS,fpc_Val_int64_AnsiStr,Code);
|
|
end;
|
|
end;
|
|
|
|
procedure fpc_AnsiStr_Float(d : ValReal;len,fr,rt : longint;var s : ansistring);[public,alias:'FPC_ANSISTR_FLOAT']; {$ifdef hascompilerproc} compilerproc; {$endif}
|
|
var
|
|
ss: ShortString;
|
|
begin
|
|
str_real(len,fr,d,treal_type(rt),ss);
|
|
s:=ss;
|
|
end;
|
|
|
|
|
|
Procedure fpc_AnsiStr_Cardinal(C : Cardinal;Len : Longint; Var S : AnsiString);[Public,Alias : 'FPC_ANSISTR_CARDINAL']; {$ifdef hascompilerproc} compilerproc; {$endif}
|
|
Var
|
|
SS : ShortString;
|
|
begin
|
|
str(C:Len,SS);
|
|
S:=SS;
|
|
end;
|
|
|
|
|
|
|
|
Procedure fpc_AnsiStr_Longint(L : Longint; Len : Longint; Var S : AnsiString);[Public,Alias : 'FPC_ANSISTR_LONGINT']; {$ifdef hascompilerproc} compilerproc; {$endif}
|
|
Var
|
|
SS : ShortString;
|
|
begin
|
|
str (L:Len,SS);
|
|
S:=SS;
|
|
end;
|
|
|
|
|
|
Procedure Delete (Var S : AnsiString; Index,Size: Longint);
|
|
Var
|
|
LS : Longint;
|
|
begin
|
|
If Length(S)=0 then
|
|
exit;
|
|
if index<=0 then
|
|
begin
|
|
inc(Size,index-1);
|
|
index:=1;
|
|
end;
|
|
LS:=PAnsiRec(Pointer(S)-FirstOff)^.Len;
|
|
if (Index<=LS) and (Size>0) then
|
|
begin
|
|
UniqueString (S);
|
|
if Size+Index>LS then
|
|
Size:=LS-Index+1;
|
|
if Index+Size<=LS then
|
|
begin
|
|
Dec(Index);
|
|
Move(PByte(Pointer(S))[Index+Size],PByte(Pointer(S))[Index],LS-Index+1);
|
|
end;
|
|
Setlength(s,LS-Size);
|
|
end;
|
|
end;
|
|
|
|
|
|
Procedure Insert (Const Source : AnsiString; Var S : AnsiString; Index : Longint);
|
|
var
|
|
Temp : AnsiString;
|
|
LS : Longint;
|
|
begin
|
|
If Length(Source)=0 then
|
|
exit;
|
|
if index <= 0 then
|
|
index := 1;
|
|
Ls:=Length(S);
|
|
if index > LS then
|
|
index := LS+1;
|
|
Dec(Index);
|
|
Pointer(Temp) := NewAnsiString(Length(Source)+LS);
|
|
SetLength(Temp,Length(Source)+LS);
|
|
If Index>0 then
|
|
move (Pointer(S)^,Pointer(Temp)^,Index);
|
|
Move (Pointer(Source)^,PByte(Temp)[Index],Length(Source));
|
|
If (LS-Index)>0 then
|
|
Move(PByte(Pointer(S))[Index],PByte(temp)[Length(Source)+index],LS-Index);
|
|
S:=Temp;
|
|
end;
|
|
|
|
|
|
Function StringOfChar(c : char;l : longint) : AnsiString;
|
|
begin
|
|
SetLength(StringOfChar,l);
|
|
FillChar(Pointer(StringOfChar)^,Length(StringOfChar),c);
|
|
end;
|
|
|
|
Procedure SetString (Var S : AnsiString; Buf : PChar; Len : Longint);
|
|
|
|
begin
|
|
SetLength(S,Len);
|
|
Move (Buf[0],S[1],Len);
|
|
end;
|
|
|
|
|
|
function upcase(const s : ansistring) : ansistring;
|
|
var
|
|
i : longint;
|
|
begin
|
|
Setlength(result,length(s));
|
|
for i := 1 to length (s) do
|
|
result[i] := upcase(s[i]);
|
|
end;
|
|
|
|
|
|
function lowercase(const s : ansistring) : ansistring;
|
|
var
|
|
i : longint;
|
|
begin
|
|
Setlength(result,length(s));
|
|
for i := 1 to length (s) do
|
|
result[i] := lowercase(s[i]);
|
|
end;
|
|
|
|
|
|
{
|
|
$Log$
|
|
Revision 1.21 2001-08-30 15:43:15 jonas
|
|
* converted adding/comparing of strings to compileproc. Note that due
|
|
to the way the shortstring helpers for i386 are written, they are
|
|
still handled by the old code (reason: fpc_shortstr_compare returns
|
|
results in the flags instead of in eax and fpc_shortstr_concat
|
|
has wierd parameter conventions). The compilerproc stuff should work
|
|
fine with the generic implementations though.
|
|
* removed some nested comments warnings
|
|
|
|
Revision 1.20 2001/08/29 19:49:04 jonas
|
|
* some fixes in compilerprocs for chararray to string conversions
|
|
* conversion from string to chararray is now also done via compilerprocs
|
|
|
|
Revision 1.19 2001/08/28 13:24:47 jonas
|
|
+ compilerproc implementation of most string-related type conversions
|
|
- removed all code from the compiler which has been replaced by
|
|
compilerproc implementations (using (ifdef hascompilerproc) is not
|
|
necessary in the compiler)
|
|
|
|
Revision 1.18 2001/08/13 12:40:16 jonas
|
|
* renamed some str(x,y) and val(x,y) helpers so the naming scheme is the
|
|
same for all string types
|
|
+ added the str(x,y) and val(x,y,z) helpers for int64/qword to
|
|
compproc.inc
|
|
|
|
Revision 1.17 2001/08/01 15:00:10 jonas
|
|
+ "compproc" helpers
|
|
* renamed several helpers so that their name is the same as their
|
|
"public alias", which should facilitate the conversion of processor
|
|
specific code in the code generator to processor independent code
|
|
* some small fixes to the val_ansistring and val_widestring helpers
|
|
(always immediately exit if the source string is longer than 255
|
|
chars)
|
|
* fixed fpc_dynarray_high and fpc_dynarray_length if the dynarray is
|
|
still nil (used to crash, now return resp -1 and 0)
|
|
|
|
Revision 1.16 2001/07/10 18:04:37 peter
|
|
* merged textfile, readlink and concat ansistring fixes
|
|
|
|
Revision 1.15 2001/07/09 21:15:41 peter
|
|
* Length made internal
|
|
* Add array support for Length
|
|
|
|
Revision 1.14 2001/07/09 11:41:57 florian
|
|
* another MT fix
|
|
|
|
Revision 1.13 2001/07/08 21:00:18 peter
|
|
* various widestring updates, it works now mostly without charset
|
|
mapping supported
|
|
|
|
Revision 1.12 2001/07/04 12:17:09 jonas
|
|
* removed DestSize parameter from declaration of ValAnsiSignedInt64
|
|
(merged)
|
|
|
|
Revision 1.11 2001/05/27 14:28:44 florian
|
|
+ made the ref. couting MT safe
|
|
|
|
Revision 1.10 2001/04/13 18:06:07 peter
|
|
* upcase, lowercase for ansistring
|
|
|
|
Revision 1.9 2000/12/10 15:00:14 florian
|
|
* val for int64 hopefully works now correct
|
|
|
|
Revision 1.8 2000/12/08 14:04:43 jonas
|
|
+ added pos(char,ansistring), because there is also a pos(char,shortstring)
|
|
and without the ansistring version, the shortstring version is always
|
|
called when calling pos(char,pchar), even when using $h+ (because the
|
|
first parameter matches exactly) (merged)
|
|
|
|
Revision 1.7 2000/11/06 20:34:24 peter
|
|
* changed ver1_0 defines to temporary defs
|
|
|
|
Revision 1.6 2000/10/21 18:20:17 florian
|
|
* a lot of small changes:
|
|
- setlength is internal
|
|
- win32 graph unit extended
|
|
....
|
|
|
|
Revision 1.5 2000/08/29 18:39:42 peter
|
|
* fixed chararray to ansistring (merged)
|
|
|
|
Revision 1.4 2000/08/24 07:37:21 jonas
|
|
* fixed bug in setlength (it sometimes read after the end of the heap)
|
|
and small improvement to ansistring_to_chararray conversion (merged
|
|
from fixes branch)
|
|
|
|
Revision 1.3 2000/08/09 19:31:18 marco
|
|
* fixes for val(int64 or qword) to ansistring
|
|
|
|
Revision 1.2 2000/07/13 11:33:42 michael
|
|
+ removed logs
|
|
}
|