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fpc/rtl/inc/astrings.inc

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{
This file is part of the Free Pascal run time library.
Copyright (c) 1999-2000 by Michael Van Canneyt,
member of the Free Pascal development team.
This file implements AnsiStrings for FPC
See the file COPYING.FPC, included in this distribution,
for details about the copyright.
This program 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.
**********************************************************************}
{ This will release some functions for special shortstring support }
{ define EXTRAANSISHORT}
{$ifndef FPC_ANSISTRING_TYPE_DEFINED}
{$define FPC_ANSISTRING_TYPE_DEFINED}
{
This file contains the implementation of the AnsiString type,
and all things that are needed for it.
AnsiString is defined as a 'silent' pansichar :
a pansichar that points to (S= SizeOf(SizeInt), R= (if CPU64 then SizeOf(Longint) else SizeOf(SizeInt))):
@-S-R-4 : Code page indicator.
@-S-R-2 : Character size (2 bytes)
@-S-R : Reference count (R bytes)
@-S : SizeInt for size;
@ : String + Terminating #0;
PAnsiChar(Ansistring) is a valid typecast.
So AS[i] is converted to the address @AS+i-1.
Constants should be assigned a reference count of -1
Meaning that they can't be disposed of.
}
Type
PAnsiRec = ^TAnsiRec;
TAnsiRec = Record
CodePage : TSystemCodePage;
ElementSize : Word;
{$if not defined(VER3_0) and not defined(VER3_2)}
{$ifdef CPU64}
Ref : Longint;
{$else}
Ref : SizeInt;
{$endif}
{$else}
{$ifdef CPU64}
{ align fields }
Dummy : DWord;
{$endif CPU64}
Ref : SizeInt;
{$endif}
Len : SizeInt;
end;
Const
AnsiFirstOff = SizeOf(TAnsiRec);
{$endif FPC_ANSISTRING_TYPE_DEFINED}
{****************************************************************************
Internal functions, not in interface.
****************************************************************************}
{$ifndef FPC_HAS_TRANSLATEPLACEHOLDERCP}
{$define FPC_HAS_TRANSLATEPLACEHOLDERCP}
function TranslatePlaceholderCP(cp: TSystemCodePage): TSystemCodePage; {$ifdef SYSTEMINLINE}inline;{$endif}
begin
TranslatePlaceholderCP:=cp;
case cp of
CP_OEMCP,
CP_ACP:
TranslatePlaceholderCP:=DefaultSystemCodePage;
end;
end;
{$endif FPC_HAS_TRANSLATEPLACEHOLDERCP}
{$ifndef FPC_HAS_PCHAR_ANSISTR_INTERN_CHARMOVE}
{$define FPC_HAS_PCHAR_ANSISTR_INTERN_CHARMOVE}
procedure fpc_pchar_ansistr_intern_charmove(const src: pansichar; const srcindex: sizeint; var dst: rawbytestring; const dstindex, len: sizeint); {$ifdef FPC_HAS_CPSTRING}rtlproc;{$endif} {$ifdef SYSTEMINLINE}inline;{$endif}
begin
move(src[srcindex],pbyte(pointer(dst))[dstindex],len);
end;
{$endif FPC_HAS_PCHAR_ANSISTR_INTERN_CHARMOVE}
{$ifndef FPC_HAS_PCHAR_PCHAR_INTERN_CHARMOVE}
{$define FPC_HAS_PCHAR_PCHAR_INTERN_CHARMOVE}
procedure fpc_pchar_pchar_intern_charmove(const src: pansichar; const srcindex: sizeint; const dst: pansichar; const dstindex, len: sizeint); {$ifdef FPC_HAS_CPSTRING}rtlproc;{$endif} {$ifdef SYSTEMINLINE}inline;{$endif}
begin
move(src[srcindex],dst[dstindex],len);
end;
{$endif FPC_HAS_PCHAR_PCHAR_INTERN_CHARMOVE}
{$ifndef FPC_HAS_SHORTSTR_ANSISTR_INTERN_CHARMOVE}
{$define FPC_HAS_SHORTSTR_ANSISTR_INTERN_CHARMOVE}
procedure fpc_shortstr_ansistr_intern_charmove(const src: shortstring; const srcindex: sizeint; var dst: rawbytestring; const dstindex, len: sizeint); {$ifdef FPC_HAS_CPSTRING}rtlproc;{$endif} {$ifdef SYSTEMINLINE}inline;{$endif}
begin
move(src[srcindex],pbyte(pointer(dst))[dstindex],len);
end;
{$endif FPC_HAS_SHORTSTR_ANSISTR_INTERN_CHARMOVE}
{$ifndef FPC_HAS_NEWANSISTR}
{$define FPC_HAS_NEWANSISTR}
Function NewAnsiString(Len : SizeInt) : Pointer;
{
Allocate a new AnsiString on the heap.
initialize it to zero length and reference count 1.
}
Var
P : Pointer;
begin
{ request a multiple of 16 because the heap manager alloctes anyways chunks of 16 bytes }
GetMem(P,Len+(AnsiFirstOff+sizeof(AnsiChar)));
If P<>Nil then
begin
PAnsiRec(P)^.Ref:=1; { Set reference count }
PAnsiRec(P)^.Len:=0; { Initial length }
PAnsiRec(P)^.CodePage:=DefaultSystemCodePage;
PAnsiRec(P)^.ElementSize:=SizeOf(AnsiChar);
inc(p,AnsiFirstOff); { Points to string now }
PAnsiChar(P)^:=#0; { Terminating #0 }
end;
NewAnsiString:=P;
end;
{$endif FPC_HAS_NEWANSISTR}
{$ifndef FPC_SYSTEM_HAS_ANSISTR_DECR_REF}
{$define FPC_SYSTEM_HAS_ANSISTR_DECR_REF}
Procedure fpc_ansistr_decr_ref (Var S : Pointer); [Public,Alias:'FPC_ANSISTR_DECR_REF']; compilerproc;
{
Decreases the ReferenceCount of a non constant ansistring;
If the reference count is zero, deallocate the string;
}
Var
p: PAnsiRec;
Begin
{ Zero string }
If S=Nil then
exit;
{ check for constant strings ...}
p:=PAnsiRec(S-AnsiFirstOff);
s:=nil;
If p^.ref<0 then exit;
{ declocked does a MT safe dec and returns true, if the counter is 0 }
If declocked(p^.ref) then
FreeMem(p);
end;
{$endif FPC_SYSTEM_HAS_ANSISTR_DECR_REF}
{ also define alias for internal use in the system unit }
Procedure fpc_ansistr_decr_ref (Var S : Pointer); [external name 'FPC_ANSISTR_DECR_REF'];
{$ifndef FPC_SYSTEM_HAS_ANSISTR_INCR_REF}
{$define FPC_SYSTEM_HAS_ANSISTR_INCR_REF}
Procedure fpc_AnsiStr_Incr_Ref (S : Pointer); [Public,Alias:'FPC_ANSISTR_INCR_REF']; compilerproc; inline;
Begin
If S=Nil then
exit;
{ Let's be paranoid : Constant string ??}
If PAnsiRec(S-AnsiFirstOff)^.Ref<0 then exit;
inclocked(PAnsiRec(S-AnsiFirstOff)^.Ref);
end;
{$endif FPC_SYSTEM_HAS_ANSISTR_DECR_REF}
{ also define alias which can be used inside the system unit }
Procedure fpc_AnsiStr_Incr_Ref (S : Pointer); [external name 'FPC_ANSISTR_INCR_REF'];
{$ifndef FPC_HAS_ANSISTR_ASSIGN}
{$define FPC_HAS_ANSISTR_ASSIGN}
Procedure fpc_AnsiStr_Assign (Var DestS : Pointer;S2 : Pointer);[Public,Alias:'FPC_ANSISTR_ASSIGN']; compilerproc;
{
Assigns S2 to S1 (S1:=S2), taking in account reference counts.
}
begin
if DestS=S2 then
exit;
If S2<>nil then
If PAnsiRec(S2-AnsiFirstOff)^.Ref>0 then
inclocked(PAnsiRec(S2-AnsiFirstOff)^.Ref);
{ Decrease the reference count on the old S1 }
fpc_ansistr_decr_ref (DestS);
{ And finally, have DestS pointing to S2 (or its copy) }
DestS:=S2;
end;
{$endif FPC_HAS_ANSISTR_ASSIGN}
{ alias for internal use }
Procedure fpc_AnsiStr_Assign (Var S1 : Pointer;S2 : Pointer);[external name 'FPC_ANSISTR_ASSIGN'];
{$ifndef FPC_HAS_ANSISTR_CONCAT_COMPLEX}
{$define FPC_HAS_ANSISTR_CONCAT_COMPLEX}
{ keeps implicit try..finally block out from primary control flow }
procedure ansistr_concat_complex(var DestS: RawByteString; const S1,S2: RawByteString; cp: TSystemCodePage);
var
U: UnicodeString;
begin
U:=UnicodeString(S1)+UnicodeString(S2);
widestringmanager.Unicode2AnsiMoveProc(PUnicodeChar(Pointer(U)),DestS,cp,Length(U));
end;
{$endif FPC_HAS_ANSISTR_CONCAT_COMPLEX}
{$ifndef FPC_HAS_ANSISTR_CONCAT}
{$define FPC_HAS_ANSISTR_CONCAT}
procedure fpc_AnsiStr_Concat (var DestS:RawByteString;const S1,S2 : RawByteString{$ifdef FPC_HAS_CPSTRING};cp : TSystemCodePage{$endif FPC_HAS_CPSTRING}); compilerproc;
Var
S1Len, S2Len: SizeInt;
same : boolean;
S1CP, S2CP, DestCP: TSystemCodePage;
begin
{$ifdef FPC_HAS_CPSTRING}
DestCP:=cp;
if DestCp=CP_NONE then
DestCP:=DefaultSystemCodePage;
{$else FPC_HAS_CPSTRING}
DestCP:=StringCodePage(DestS);
{$endif FPC_HAS_CPSTRING}
DestCP:=TranslatePlaceholderCP(DestCP);
{ if codepages are different then concat using unicodestring,
but avoid conversions if either addend is empty (StringCodePage will return
DefaultSystemCodePage in that case, which may differ from other addend/dest) }
if Length(S1)=0 then
S1CP:=DestCP
else
S1CP:=StringCodePage(S1);
S1CP:=TranslatePlaceholderCP(S1CP);
if Length(S2)=0 then
S2CP:=DestCP
else
S2CP:=StringCodePage(S2);
S2CP:=TranslatePlaceholderCP(S2CP);
{$ifdef FPC_HAS_CPSTRING}
{ if the result is rawbytestring and both strings have the same code page,
keep that code page or keep the code page if the other string is empty }
if cp=CP_NONE then
begin
if (S1CP=S2CP) or (Length(S2)=0) then
DestCP:=S1CP
else if Length(S1)=0 then
DestCP:=S2CP;
end;
{$endif FPC_HAS_CPSTRING}
if ((S1CP<>DestCP) and (Length(s1)>0)) or ((S2CP<>DestCP) and (Length(s2)>0)) then
begin
ansistr_concat_complex(DestS,S1,S2,DestCP);
exit;
end;
{ only assign if s1 or s2 is empty }
if (Length(S1)=0) then
begin
DestS:=s2;
exit;
end;
if (Length(S2)=0) then
begin
DestS:=s1;
exit;
end;
S1Len:=Length(S1);
S2Len:=length(S2);
{ Use Pointer() typecasts to prevent extra conversion code }
if Pointer(DestS)=Pointer(S1) then
begin
same:=Pointer(S1)=Pointer(S2);
SetLength(DestS,S1Len+S2Len);
if same then
fpc_pchar_ansistr_intern_charmove(PAnsiChar(DestS),0,DestS,S1Len,S2Len)
else
fpc_pchar_ansistr_intern_charmove(PAnsiChar(S2),0,DestS,S1Len,S2Len+1)
end
else if Pointer(DestS)=Pointer(S2) then
begin
SetLength(DestS,S1Len+S2Len);
fpc_pchar_ansistr_intern_charmove(PAnsiChar(DestS),0,DestS,S1Len,S2Len+1);
fpc_pchar_ansistr_intern_charmove(PAnsiChar(S1),0,DestS,0,S1Len);
end
else
begin
SetLength(DestS,S1Len+S2Len);
fpc_pchar_ansistr_intern_charmove(PAnsiChar(S1),0,DestS,0,S1Len);
fpc_pchar_ansistr_intern_charmove(PAnsiChar(S2),0,DestS,S1Len,S2Len+1);
end;
SetCodePage(DestS,DestCP,false);
end;
{$endif FPC_HAS_ANSISTR_CONCAT}
{$ifndef FPC_HAS_ANSISTR_CONCAT_MULTI}
{$define FPC_HAS_ANSISTR_CONCAT_MULTI}
procedure fpc_AnsiStr_Concat_multi (var DestS:RawByteString;const sarr:array of RawByteString{$ifdef FPC_HAS_CPSTRING};cp : TSystemCodePage{$endif FPC_HAS_CPSTRING}); compilerproc;
Var
lowstart,
nonemptystart,
i : ObjpasInt;
p,pc : pointer;
Size,NewLen,
OldDestLen : SizeInt;
destcopy : pointer;
U : UnicodeString;
DestCP,
tmpCP : TSystemCodePage;
sameCP : Boolean;
begin
if high(sarr)=0 then
begin
DestS:='';
exit;
end;
{$ifdef FPC_HAS_CPSTRING}
DestCP:=cp;
if DestCp=CP_NONE then
DestCP:=DefaultSystemCodePage;
{$else FPC_HAS_CPSTRING}
DestCP:=StringCodePage(DestS);
{$endif FPC_HAS_CPSTRING}
lowstart:=low(sarr);
{ skip empty strings }
while (lowstart<=high(sarr)) and
(Length(sarr[lowstart])=0) do
inc(lowstart);
if lowstart>high(sarr) then
begin
DestS:=''; { All source strings empty }
exit;
end;
DestCP:=TranslatePlaceholderCP(DestCP);
sameCP:=true;
tmpCP:=TranslatePlaceholderCP(StringCodePage(sarr[lowstart]));
for i:=lowstart+1 to high(sarr) do
begin
{ ignore the code page of empty strings, it will always be
DefaultSystemCodePage but it doesn't matter for the outcome }
if (length(sarr[i])<>0) and
(tmpCP<>TranslatePlaceholderCP(StringCodePage(sarr[i]))) then
begin
sameCP:=false;
break;
end;
end;
if not sameCP then
begin
U:='';
for i:=lowstart to high(sarr) do
if (Length(sarr[i])<>0) then
U:=U+UnicodeString(sarr[i]);
DestS:='';
widestringmanager.Unicode2AnsiMoveProc(PUnicodeChar(Pointer(U)),DestS,DestCP,Length(U));
exit;
end;
{$ifdef FPC_HAS_CPSTRING}
{ if the result is rawbytestring and all strings have the same code page,
keep that code page }
if cp=CP_NONE then
DestCP:=tmpCP;
{$endif FPC_HAS_CPSTRING}
destcopy:=nil;
nonemptystart:=lowstart;
{ Check for another reuse, then we can't use
the append optimization }
if Length(DestS)<>0 then
begin
if Pointer(DestS)=Pointer(sarr[lowstart]) then
inc(lowstart);
for i:=lowstart to high(sarr) do
begin
if Pointer(DestS)=Pointer(sarr[i]) then
begin
{ if DestS is used somewhere in the middle of the expression,
we need to make sure the original string still exists after
we empty/modify DestS }
destcopy:=pointer(dests);
fpc_AnsiStr_Incr_Ref(destcopy);
lowstart:=nonemptystart;
break;
end;
end;
end;
{ Start with empty DestS if we start with concatting
the first (non-empty) array element }
if lowstart=nonemptystart then
DestS:='';
OldDestLen:=length(DestS);
{ Calculate size of the result so we can do
a single call to SetLength() }
NewLen:=0;
for i:=nonemptystart to high(sarr) do
inc(NewLen,length(sarr[i]));
SetLength(DestS,NewLen);
{ Concat all strings, except the string we already
copied in DestS }
pc:=Pointer(DestS)+OldDestLen;
for i:=lowstart to high(sarr) do
begin
p:=pointer(sarr[i]);
if assigned(p) then
begin
Size:=length(ansistring(p));
Move(p^,pc^,Size+1);
inc(pc,size);
end;
end;
SetCodePage(DestS,tmpCP,False);
SetCodePage(DestS,DestCP,True);
fpc_AnsiStr_Decr_Ref(destcopy);
end;
{$endif FPC_HAS_ANSISTR_CONCAT_MULTI}
{$ifdef EXTRAANSISHORT}
Procedure AnsiStr_ShortStr_Concat (Var S1: AnsiString; Var S2 : ShortString);
{
Concatenates a Ansi with a short string; : S2 + S2
}
Var
Size,Location : SizeInt;
begin
Size:=Length(S2);
Location:=Length(S1);
If Size=0 then
exit;
{ Setlength takes case of uniqueness
and alllocated memory. We need to use length,
to take into account possibility of S1=Nil }
SetLength (S1,Size+Length(S1));
Move (S2[1],Pointer(Pointer(S1)+Location)^,Size);
PByte( Pointer(S1)+length(S1) )^:=0; { Terminating Zero }
end;
{$endif EXTRAANSISHORT}
{$ifdef FPC_HAS_CPSTRING}
{$ifndef FPC_HAS_ANSISTR_TO_ANSISTR}
{$define FPC_HAS_ANSISTR_TO_ANSISTR}
Function fpc_AnsiStr_To_AnsiStr (const S : RawByteString;cp : TSystemCodePage): RawByteString; [Public, alias: 'FPC_ANSISTR_TO_ANSISTR']; compilerproc;
{
Converts an AnsiString to an AnsiString taking code pages into care
}
Var
Size : SizeInt;
temp : UnicodeString;
orgcp: TSystemCodePage;
begin
result:='';
Size:=Length(S);
if Size>0 then
begin
cp:=TranslatePlaceholderCP(cp);
orgcp:=TranslatePlaceholderCP(StringCodePage(S));
if (orgcp=cp) or (orgcp=CP_NONE) then
begin
SetLength(result,Size);
Move(S[1],result[1],Size);
PAnsiRec(Pointer(result)-AnsiFirstOff)^.CodePage:=cp;
end
else
begin
temp:=UnicodeString(S);
Size:=Length(temp);
widestringmanager.Unicode2AnsiMoveProc(PUnicodeChar(Pointer(temp)),result,cp,Size);
end;
end;
end;
Function fpc_AnsiStr_To_AnsiStr (const S : RawByteString;cp : TSystemCodePage): RawByteString; [external name 'FPC_ANSISTR_TO_ANSISTR'];
{$endif FPC_HAS_CPSTRING}
{$endif FPC_HAS_ANSISTR_TO_ANSISTR}
{$ifndef FPC_HAS_ANSISTR_TO_SHORTSTR}
{$define FPC_HAS_ANSISTR_TO_SHORTSTR}
procedure fpc_AnsiStr_To_ShortStr (out res: shortstring; const S2 : RawByteString);[Public, alias: 'FPC_ANSISTR_TO_SHORTSTR']; compilerproc;
{
Converts a AnsiString to a ShortString;
}
Var
Size : SizeInt;
begin
if Length(S2)=0 then
res:=''
else
begin
Size:=Length(S2);
If Size>high(res) then
Size:=high(res);
byte(res[0]):=byte(Size);
Move (S2[1],res[1],Size);
end;
end;
{$endif FPC_HAS_ANSISTR_TO_SHORTSTR}
{$ifndef FPC_HAS_SHORTSTR_TO_ANSISTR}
{$define FPC_HAS_SHORTSTR_TO_ANSISTR}
Function fpc_ShortStr_To_AnsiStr (Const S2 : ShortString{$ifdef FPC_HAS_CPSTRING};cp : TSystemCodePage{$endif FPC_HAS_CPSTRING}): RawByteString; compilerproc;
{
Converts a ShortString to a AnsiString;
}
Var
Size : SizeInt;
{$ifndef FPC_HAS_CPSTRING}
cp : TSystemCodePage;
{$endif FPC_HAS_CPSTRING}
begin
{$ifdef FPC_HAS_CPSTRING}
cp:=TranslatePlaceholderCP(cp);
{$else FPC_HAS_CPSTRING}
cp:=DefaultSystemCodePage;
{$endif FPC_HAS_CPSTRING}
Size:=Length(S2);
Setlength(fpc_ShortStr_To_AnsiStr,Size);
if Size>0 then
begin
fpc_shortstr_ansistr_intern_charmove(S2,1,fpc_ShortStr_To_AnsiStr,0,Size);
SetCodePage(fpc_ShortStr_To_AnsiStr,cp,False);
end
end;
{$endif FPC_HAS_SHORTSTR_TO_ANSISTR}
{$ifndef FPC_HAS_CHAR_TO_ANSISTR}
{$define FPC_HAS_CHAR_TO_ANSISTR}
Function fpc_Char_To_AnsiStr(const c : AnsiChar{$ifdef FPC_HAS_CPSTRING};cp : TSystemCodePage{$endif FPC_HAS_CPSTRING}): RawByteString; compilerproc;
{
Converts a AnsiChar to a AnsiString;
}
{$ifndef FPC_HAS_CPSTRING}
var
cp : TSystemCodePage;
{$endif FPC_HAS_CPSTRING}
begin
{$ifdef FPC_HAS_CPSTRING}
cp:=TranslatePlaceholderCP(cp);
{$else FPC_HAS_CPSTRING}
cp:=DefaultSystemCodePage;
{$endif FPC_HAS_CPSTRING}
Setlength (fpc_Char_To_AnsiStr,1);
PAnsiChar(fpc_Char_To_AnsiStr)^:=c;
{ Terminating Zero already set by SetLength above }
SetCodePage(fpc_Char_To_AnsiStr,cp,False);
end;
{$endif FPC_HAS_CHAR_TO_ANSISTR}
{$ifndef FPC_HAS_PCHAR_TO_ANSISTR}
{$define FPC_HAS_PCHAR_TO_ANSISTR}
Function fpc_PChar_To_AnsiStr(const p : PAnsiChar{$ifdef FPC_HAS_CPSTRING};cp : TSystemCodePage{$endif FPC_HAS_CPSTRING}): RawByteString; compilerproc;
Var
L : SizeInt;
{$ifndef FPC_HAS_CPSTRING}
cp : TSystemCodePage;
{$endif FPC_HAS_CPSTRING}
begin
if (not assigned(p)) or (p[0]=#0) Then
L := 0
else
L:=IndexChar(p^,-1,#0);
SetLength(fpc_PChar_To_AnsiStr,L);
if L > 0 then
begin
{$ifdef FPC_HAS_CPSTRING}
cp:=TranslatePlaceholderCP(cp);
{$else FPC_HAS_CPSTRING}
cp:=DefaultSystemCodePage;
{$endif FPC_HAS_CPSTRING}
fpc_pchar_ansistr_intern_charmove(p,0,fpc_PChar_To_AnsiStr,0,L);
SetCodePage(fpc_PChar_To_AnsiStr,cp,False);
end;
end;
{$endif FPC_HAS_PCHAR_TO_ANSISTR}
{$ifndef FPC_HAS_CHARARRAY_TO_ANSISTR}
{$define FPC_HAS_CHARARRAY_TO_ANSISTR}
Function fpc_CharArray_To_AnsiStr(const arr: array of ansichar; {$ifdef FPC_HAS_CPSTRING}cp : TSystemCodePage;{$endif FPC_HAS_CPSTRING}zerobased: boolean = true): RawByteString; compilerproc;
var
i : SizeInt;
{$ifndef FPC_HAS_CPSTRING}
cp : TSystemCodePage;
{$endif FPC_HAS_CPSTRING}
begin
if (zerobased) then
begin
if (arr[0]=#0) Then
i := 0
else
begin
i:=IndexChar(arr,high(arr)+1,#0);
if i = -1 then
i := high(arr)+1;
end;
end
else
i := high(arr)+1;
SetLength(fpc_CharArray_To_AnsiStr,i);
if i > 0 then
begin
{$ifdef FPC_HAS_CPSTRING}
cp:=TranslatePlaceholderCP(cp);
{$else FPC_HAS_CPSTRING}
cp:=DefaultSystemCodePage;
{$endif FPC_HAS_CPSTRING}
fpc_pchar_ansistr_intern_charmove(pansichar(@arr),0,fpc_CharArray_To_AnsiStr,0,i);
SetCodePage(fpc_CharArray_To_AnsiStr,cp,False);
end;
end;
{$endif FPC_HAS_ANSISTR_TO_CHARARRAY}
{$ifndef FPC_HAS_ANSISTR_TO_CHARARRAY}
{$define FPC_HAS_ANSISTR_TO_CHARARRAY}
procedure fpc_ansistr_to_chararray(out res: array of AnsiChar; const src: RawByteString); compilerproc;
var
len: SizeInt;
begin
len := length(src);
if len > length(res) then
len := length(res);
{$push}{$r-}
{ make sure we don't try to access element 1 of the ansistring if it's nil }
if len > 0 then
move(src[1],res[0],len);
fillchar(res[len],length(res)-len,0);
{$pop}
end;
{$endif FPC_HAS_ANSISTR_TO_CHARARRAY}
{$ifndef FPC_HAS_ANSISTR_COMPARE}
{$define FPC_HAS_ANSISTR_COMPARE}
Function fpc_utf8_Compare(const S1,S2 : RawByteString): SizeInt;
var
r1,r2 : RawByteString;
begin
r1:=S1;
r2:=S2;
//convert them to utf8 then compare
SetCodePage(r1,65001);
SetCodePage(r2,65001);
Result:=fpc_AnsiStr_Compare(r1,r2);
end;
Function fpc_AnsiStr_Compare(const S1,S2 : RawByteString): SizeInt;[Public,Alias : 'FPC_ANSISTR_COMPARE']; compilerproc;
{
Compares 2 AnsiStrings;
The result is
<0 if S1<S2
0 if S1=S2
>0 if S1>S2
}
Var
MaxI,Temp : SizeInt;
cp1,cp2 : TSystemCodePage;
r1,r2 : RawByteString;
begin
if pointer(S1)=pointer(S2) then
begin
result:=0;
exit;
end;
if (pointer(S1)=nil) then
begin
result:=-Length(S2);
exit;
end;
if (pointer(S2)=nil) then
begin
result:=Length(S1);
exit;
end;
cp1:=TranslatePlaceholderCP(StringCodePage(S1));
cp2:=TranslatePlaceholderCP(StringCodePage(S2));
if cp1=cp2 then
begin
Maxi:=Length(S1);
temp:=Length(S2);
If MaxI>Temp then
MaxI:=Temp;
if MaxI>0 then
begin
result:=CompareByte(S1[1],S2[1],MaxI);
if result=0 then
result:=Length(S1)-Length(S2);
end
else
result:=Length(S1)-Length(S2);
end
else
Result:=fpc_utf8_compare(s1,s2);
end;
{$endif FPC_HAS_ANSISTR_COMPARE}
{$ifndef FPC_HAS_ANSISTR_COMPARE_EQUAL}
{$define FPC_HAS_ANSISTR_COMPARE_EQUAL}
Function fpc_utf8_Compare_equal(Const S1,S2 : RawByteString): SizeInt;
Var
r1,r2 : RawByteString;
L1,L2 : SizeInt;
begin
r1:=S1;
r2:=S2;
//convert them to utf8 then compare
SetCodePage(r1,65001);
SetCodePage(r2,65001);
L1:=Length(r1);
L2:=Length(r2);
Result:=L1-L2;
if Result = 0 then
if L1>0 then
result:=CompareByte(r1[1],r2[1],L1);
end;
Function fpc_AnsiStr_Compare_equal(const S1,S2 : RawByteString): SizeInt;[Public,Alias : 'FPC_ANSISTR_COMPARE_EQUAL']; compilerproc;
{
Compares 2 AnsiStrings for equality/inequality only;
The result is
0 if S1=S2
<>0 if S1<>S2
}
Var
MaxI,Temp : SizeInt;
cp1,cp2 : TSystemCodePage;
begin
if pointer(S1)=pointer(S2) then
Exit(0);
{ don't compare strings if one of them is empty }
if (pointer(S1)=nil) or (pointer(S2)=Nil) then
Exit(-1);
cp1:=TranslatePlaceholderCP(StringCodePage(S1));
cp2:=TranslatePlaceholderCP(StringCodePage(S2));
if cp1=cp2 then
begin
Maxi:=Length(S1);
temp:=Length(S2);
Result := Maxi - temp;
if Result = 0 then
if MaxI>0 then
result:=CompareByte(S1[1],S2[1],MaxI);
end
else
begin
Result:=fpc_utf8_Compare_equal(S1,S2);
end;
end;
{$endif FPC_HAS_ANSISTR_COMPARE_EQUAL}
{$ifndef FPC_HAS_ANSISTR_RANGECHECK}
{$define FPC_HAS_ANSISTR_RANGECHECK}
Procedure fpc_AnsiStr_RangeCheck(p: Pointer; index: SizeInt);[Public,Alias : 'FPC_ANSISTR_RANGECHECK']; compilerproc;
begin
if (p=nil) or (index>PAnsiRec(p-AnsiFirstOff)^.Len) or (Index<1) then
HandleErrorAddrFrameInd(201,get_pc_addr,get_frame);
end;
Procedure fpc_AnsiStr_ZeroBased_RangeCheck(p: Pointer; index: SizeInt);[Public,Alias : 'FPC_ANSISTR_ZEROBASED_RANGECHECK']; compilerproc;
begin
if (p=nil) or (index>=PAnsiRec(p-AnsiFirstOff)^.Len) or (Index<0) then
HandleErrorAddrFrameInd(201,get_pc_addr,get_frame);
end;
{$endif FPC_HAS_ANSISTR_RANGECHECK}
{$ifndef FPC_HAS_ANSISTR_SETLENGTH}
{$define FPC_HAS_ANSISTR_SETLENGTH}
Procedure fpc_AnsiStr_SetLength (Var S : RawByteString; l : SizeInt{$ifdef FPC_HAS_CPSTRING};cp : TSystemCodePage{$endif FPC_HAS_CPSTRING});[Public,Alias : 'FPC_ANSISTR_SETLENGTH']; compilerproc;
{
Sets The length of string S to L.
Makes sure S is unique, and contains enough room.
}
Var
Temp : Pointer;
lens, lena : SizeInt;
begin
if (l>0) then
begin
if Pointer(S)=nil then
begin
Pointer(S):=NewAnsiString(L);
{$ifdef FPC_HAS_CPSTRING}
cp:=TranslatePlaceholderCP(cp);
PAnsiRec(Pointer(S)-AnsiFirstOff)^.CodePage:=cp;
{$else}
PAnsiRec(Pointer(S)-AnsiFirstOff)^.CodePage:=DefaultSystemCodePage;
{$endif FPC_HAS_CPSTRING}
end
else if PAnsiRec(Pointer(S)-AnsiFirstOff)^.Ref=1 then
begin
Temp:=Pointer(s)-AnsiFirstOff;
lens:=MemSize(Temp);
lena:=AnsiFirstOff+L+sizeof(AnsiChar);
{ allow shrinking string if that saves at least half of current size }
if (lena>lens) or ((lens>32) and (lena<=(lens div 2))) then
begin
reallocmem(Temp,lena);
Pointer(S):=Temp+AnsiFirstOff;
end;
end
else
begin
{ Reallocation is needed... }
Temp:=NewAnsiString(L);
PAnsiRec(Pointer(Temp)-AnsiFirstOff)^.CodePage:=PAnsiRec(Pointer(S)-AnsiFirstOff)^.CodePage;
lens:=length(s);
if l<=lens then
lens:=l
else
{ Also copy a trailing implicit #0 of the original string
to the new larger string }
Inc(lens);
Move(Pointer(S)^,Temp^,lens);
fpc_ansistr_decr_ref(Pointer(s));
Pointer(S):=Temp;
end;
{ Force nil termination in case it gets shorter }
PByte(Pointer(S)+l)^:=0;
PAnsiRec(Pointer(S)-AnsiFirstOff)^.Len:=l;
end
else { length=0, deallocate the string }
fpc_ansistr_decr_ref (Pointer(S));
end;
{$endif FPC_HAS_ANSISTR_SETLENGTH}
{$ifdef EXTRAANSISHORT}
Function fpc_AnsiStr_ShortStr_Compare (Var S1 : Pointer; Var S2 : ShortString): SizeInt; compilerproc;
{
Compares a AnsiString with a ShortString;
The result is
<0 if S1<S2
0 if S1=S2
>0 if S1>S2
}
Var
i,MaxI,Temp : SizeInt;
begin
Temp:=0;
i:=0;
MaxI:=Length(AnsiString(S1));
if MaxI>byte(S2[0]) then
MaxI:=Byte(S2[0]);
While (i<MaxI) and (Temp=0) do
begin
Temp:= PByte(S1+I)^ - Byte(S2[i+1]);
inc(i);
end;
AnsiStr_ShortStr_Compare:=Temp;
end;
{$endif EXTRAANSISHORT}
{*****************************************************************************
Public functions, In interface.
*****************************************************************************}
{$ifndef FPC_SYSTEM_HAS_TRUELY_ANSISTR_UNIQUE}
{$define FPC_SYSTEM_HAS_TRUELY_ANSISTR_UNIQUE}
function fpc_truely_ansistr_unique(Var S : Pointer): Pointer;
Var
SNew : Pointer;
L : SizeInt;
begin
L:=PAnsiRec(Pointer(S)-AnsiFirstOff)^.len;
SNew:=NewAnsiString (L);
Move (Pointer(S)^,SNew^,L+1);
PAnsiRec(SNew-AnsiFirstOff)^.len:=L;
PAnsiRec(SNew-AnsiFirstOff)^.CodePage:=PAnsiRec(Pointer(S)-AnsiFirstOff)^.CodePage;
fpc_ansistr_decr_ref (Pointer(S)); { Thread safe }
pointer(S):=SNew;
pointer(result):=SNew;
end;
{$endif FPC_SYSTEM_HAS_TRUELY_ANSISTR_UNIQUE}
Function fpc_ansistr_Unique_func(Var S : RawByteString): Pointer; external name 'FPC_ANSISTR_UNIQUE';
Procedure UniqueString(var S : RawByteString);{$ifdef FPC_HAS_CPSTRING}rtlproc;{$endif FPC_HAS_CPSTRING}{$ifdef SYSTEMINLINE}inline;{$endif}
begin
fpc_ansistr_Unique_func(S);
end;
{$ifndef FPC_SYSTEM_HAS_ANSISTR_UNIQUE}
{$define FPC_SYSTEM_HAS_ANSISTR_UNIQUE}
// MV: inline the basic checks for case that S is already unique.
// Rest is too complex to inline, so factor that out as a call.
Function fpc_ansistr_Unique(Var S : Pointer): Pointer; [Public,Alias : 'FPC_ANSISTR_UNIQUE']; compilerproc; inline;
{
Make sure reference count of S is 1,
using copy-on-write semantics.
}
begin
pointer(result) := pointer(s);
If Pointer(S)=Nil then
exit;
if PAnsiRec(Pointer(S)-AnsiFirstOff)^.Ref<>1 then
result:=fpc_truely_ansistr_unique(s);
end;
{$endif FPC_SYSTEM_HAS_ANSISTR_UNIQUE}
{$ifndef FPC_HAS_ANSISTR_COPY}
{$define FPC_HAS_ANSISTR_COPY}
Function Fpc_Ansistr_Copy(Const S : RawByteString; Index,Size : SizeInt): RawByteString;compilerproc;
var
ResultAddress : Pointer;
begin
ResultAddress:=Nil;
dec(index);
if Index < 0 then
Index := 0;
{ Check Size. Accounts for Zero-length S, the double check is needed because
Size can be maxint and will get <0 when adding index }
if (Size>Length(S)) or
(Index+Size>Length(S)) then
Size:=Length(S)-Index;
If Size>0 then
begin
ResultAddress:=NewAnsiString(Size);
if ResultAddress<>Nil then
begin
Move(Pointer(Pointer(S)+index)^,ResultAddress^,Size);
PByte(ResultAddress+Size)^:=0;
PAnsiRec(ResultAddress-AnsiFirstOff)^.Len:=Size;
PAnsiRec(ResultAddress-AnsiFirstOff)^.CodePage:=PAnsiRec(Pointer(S)-AnsiFirstOff)^.CodePage;
end;
end;
fpc_ansistr_decr_ref(Pointer(fpc_ansistr_copy));
Pointer(fpc_ansistr_Copy):=ResultAddress;
end;
{$endif FPC_HAS_ANSISTR_COPY}
{$ifndef FPC_HAS_POS_SHORTSTR_ANSISTR}
{$define FPC_HAS_POS_SHORTSTR_ANSISTR}
Function Pos(Const Substr : ShortString; Const Source : RawByteString; Offset : Sizeint = 1) : SizeInt;
var
i,MaxLen,nsource,nsub,d : SizeInt;
begin
Pos:=0;
nsource:=Length(Source);
nsub:=Length(Substr);
if (nsub>0) and (Offset>0) and (Offset<=nsource) then
begin
MaxLen:=nsource-nsub+1;
i:=Offset;
while (i<=MaxLen) do
begin
d:=IndexByte(Source[i],MaxLen-i+1,byte(Substr[1]));
if d<0 then
exit;
if CompareByte(Substr[1],Source[i+d],nsub)=0 then
exit(i+d);
i:=i+d+1;
end;
end;
end;
{$endif FPC_HAS_POS_SHORTSTR_ANSISTR}
{$ifndef FPC_HAS_POS_ANSISTR_ANSISTR}
{$define FPC_HAS_POS_ANSISTR_ANSISTR}
Function Pos(Const Substr : RawByteString; Const Source : RawByteString; Offset : Sizeint = 1) : SizeInt;
var
i,MaxLen,nsource,nsub,d : SizeInt;
begin
Pos:=0;
nsource:=Length(Source);
nsub:=Length(Substr);
if (nsub>0) and (Offset>0) and (Offset<=nsource) then
begin
MaxLen:=nsource-nsub+1;
i:=Offset;
while (i<=MaxLen) do
begin
d:=IndexByte(Source[i],MaxLen-i+1,byte(Substr[1]));
if d<0 then
exit;
if CompareByte(Substr[1],Source[i+d],nsub)=0 then
exit(i+d);
i:=i+d+1;
end;
end;
end;
{$endif FPC_HAS_POS_ANSISTR_ANSISTR}
{$ifndef FPC_HAS_POS_ANSICHAR_ANSISTR}
{$define FPC_HAS_POS_ANSICHAR_ANSISTR}
{ Faster version for a AnsiChar alone. Must be implemented because }
{ pos(c: AnsiChar; const s: shortstring) also exists, so otherwise }
{ using pos(AnsiChar,pansichar) will always call the shortstring version }
{ (exact match for first argument), also with $h+ (JM) }
Function Pos(c : AnsiChar; Const s : RawByteString; Offset : Sizeint = 1) : SizeInt;
var
ns,idx: SizeInt;
begin
pos:=0;
ns:=length(s);
if (Offset>0) and (Offset<=ns) then
begin
idx:=IndexByte(s[Offset],ns-Offset+1,byte(c));
if idx>=0 then
pos:=Offset+idx;
end;
end;
{$endif FPC_HAS_POS_ANSICHAR_ANSISTR}
{$ifndef FPUNONE}
Function fpc_Val_Real_AnsiStr(Const S : RawByteString; out Code : ValSInt): ValReal; [public, alias:'FPC_VAL_REAL_ANSISTR']; compilerproc;
Var
SS : ShortString;
begin
fpc_Val_Real_AnsiStr := 0;
if length(S) > 255 then
code := 256
else
begin
SS := S;
Val(SS,fpc_Val_Real_AnsiStr,code);
end;
end;
{$endif}
Function fpc_Val_Currency_AnsiStr(Const S : RawByteString; out Code : ValSInt): Currency; [public, alias:'FPC_VAL_CURRENCY_ANSISTR']; compilerproc;
Var
SS : ShortString;
begin
if length(S) > 255 then
begin
fpc_Val_Currency_AnsiStr := 0;
code := 256;
end
else
begin
SS := S;
Val(SS,fpc_Val_Currency_AnsiStr,code);
end;
end;
Function fpc_Val_UInt_AnsiStr ({$ifndef VER3_2}DestSize: SizeInt;{$endif VER3_2} Const S : RawByteString; out Code : ValSInt): ValUInt; [public, alias:'FPC_VAL_UINT_ANSISTR']; compilerproc;
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: SizeInt; Const S : RawByteString; out Code : ValSInt): ValSInt; [public, alias:'FPC_VAL_SINT_ANSISTR']; compilerproc;
Var
SS : ShortString;
begin
fpc_Val_SInt_AnsiStr:=0;
if length(S)>255 then
code:=256
else
begin
SS := S;
fpc_Val_SInt_AnsiStr := int_Val_SInt_ShortStr(DestSize,SS,Code);
end;
end;
{$ifndef CPU64}
Function fpc_Val_qword_AnsiStr (Const S : RawByteString; out Code : ValSInt): qword; [public, alias:'FPC_VAL_QWORD_ANSISTR']; compilerproc;
Var
SS : ShortString;
begin
fpc_Val_qword_AnsiStr:=0;
if length(S)>255 then
code:=256
else
begin
SS := S;
Val(SS,fpc_Val_qword_AnsiStr,Code);
end;
end;
Function fpc_Val_int64_AnsiStr (Const S : RawByteString; out Code : ValSInt): Int64; [public, alias:'FPC_VAL_INT64_ANSISTR']; compilerproc;
Var
SS : ShortString;
begin
fpc_Val_int64_AnsiStr:=0;
if length(S)>255 then
code:=256
else
begin
SS := s;
Val(SS,fpc_Val_int64_AnsiStr,Code);
end;
end;
{$endif CPU64}
{$if defined(CPU16) or defined(CPU8)}
Function fpc_Val_longword_AnsiStr (Const S : RawByteString; out Code : ValSInt): longword; [public, alias:'FPC_VAL_LONGWORD_ANSISTR']; compilerproc;
Var
SS : ShortString;
begin
fpc_Val_longword_AnsiStr:=0;
if length(S)>255 then
code:=256
else
begin
SS := S;
Val(SS,fpc_Val_longword_AnsiStr,Code);
end;
end;
Function fpc_Val_longint_AnsiStr (Const S : RawByteString; out Code : ValSInt): LongInt; [public, alias:'FPC_VAL_LONGINT_ANSISTR']; compilerproc;
Var
SS : ShortString;
begin
fpc_Val_longint_AnsiStr:=0;
if length(S)>255 then
code:=256
else
begin
SS := s;
Val(SS,fpc_Val_longint_AnsiStr,Code);
end;
end;
Function fpc_Val_word_AnsiStr (Const S : RawByteString; out Code : ValSInt): word; [public, alias:'FPC_VAL_WORD_ANSISTR']; compilerproc;
Var
SS : ShortString;
begin
fpc_Val_word_AnsiStr:=0;
if length(S)>255 then
code:=256
else
begin
SS := S;
Val(SS,fpc_Val_word_AnsiStr,Code);
end;
end;
Function fpc_Val_smallint_AnsiStr (Const S : RawByteString; out Code : ValSInt): smallint; [public, alias:'FPC_VAL_SMALLINT_ANSISTR']; compilerproc;
Var
SS : ShortString;
begin
fpc_Val_smallint_AnsiStr:=0;
if length(S)>255 then
code:=256
else
begin
SS := s;
Val(SS,fpc_Val_smallint_AnsiStr,Code);
end;
end;
{$endif CPU16 or CPU8}
{$if defined(CPU8)}
Function fpc_Val_word_AnsiStr (Const S : RawByteString; out Code : ValSInt): longword; [public, alias:'FPC_VAL_WORD_ANSISTR']; compilerproc;
Var
SS : ShortString;
begin
fpc_Val_longword_AnsiStr:=0;
if length(S)>255 then
code:=256
else
begin
SS := S;
Val(SS,fpc_Val_longword_AnsiStr,Code);
end;
end;
Function fpc_Val_smallint_AnsiStr (Const S : RawByteString; out Code : ValSInt): LongInt; [public, alias:'FPC_VAL_SMALLINT_ANSISTR']; compilerproc;
Var
SS : ShortString;
begin
fpc_Val_longint_AnsiStr:=0;
if length(S)>255 then
code:=256
else
begin
SS := s;
Val(SS,fpc_Val_longint_AnsiStr,Code);
end;
end;
{$endif CPU8}
{$ifndef FPUNONE}
procedure fpc_AnsiStr_Float(d : ValReal;len,fr,rt : SizeInt;out s : RawByteString{$ifdef FPC_HAS_CPSTRING};cp : TSystemCodePage{$endif FPC_HAS_CPSTRING});[public,alias:'FPC_ANSISTR_FLOAT']; compilerproc; inline;
var
ss: ShortString;
begin
str_real(len,fr,d,treal_type(rt),ss);
s:=ss;
{$ifdef FPC_HAS_CPSTRING}
SetCodePage(s,cp,false);
{$endif FPC_HAS_CPSTRING}
end;
{$endif}
{$ifndef FPC_STR_ENUM_INTERN}
procedure fpc_ansistr_enum(ordinal,len:sizeint;typinfo,ord2strindex:pointer;out s:RawByteString{$ifdef FPC_HAS_CPSTRING};cp : TSystemCodePage{$endif FPC_HAS_CPSTRING});[public,alias:'FPC_ANSISTR_ENUM'];compilerproc; inline;
var ss:shortstring;
begin
fpc_shortstr_enum(ordinal,len,typinfo,ord2strindex,ss);
s:=ss;
{$ifdef FPC_HAS_CPSTRING}
SetCodePage(s,cp,false);
{$endif FPC_HAS_CPSTRING}
end;
{$endif FPC_STR_ENUM_INTERN}
procedure fpc_ansistr_bool(b : boolean;len:sizeint;out s:RawByteString{$ifdef FPC_HAS_CPSTRING};cp : TSystemCodePage{$endif FPC_HAS_CPSTRING});[public,alias:'FPC_ANSISTR_BOOL'];compilerproc; inline;
var
ss:shortstring;
begin
fpc_shortstr_bool(b,len,ss);
s:=ss;
{$ifdef FPC_HAS_CPSTRING}
SetCodePage(s,cp,false);
{$endif FPC_HAS_CPSTRING}
end;
{$ifndef FPC_STR_ENUM_INTERN}
function fpc_val_enum_ansistr(str2ordindex:pointer;const s:RawByteString;out code:valsint):longint; [public, alias:'FPC_VAL_ENUM_ANSISTR']; compilerproc;
begin
fpc_val_enum_ansistr:=fpc_val_enum_shortstr(str2ordindex,s,code);
end;
{$endif FPC_STR_ENUM_INTERN}
procedure fpc_AnsiStr_Currency(c : currency;len,fr : SizeInt;out s : RawByteString{$ifdef FPC_HAS_CPSTRING};cp : TSystemCodePage{$endif FPC_HAS_CPSTRING});[public,alias:'FPC_ANSISTR_CURRENCY']; compilerproc; inline;
var
ss: ShortString;
begin
str(c:len:fr,ss);
s:=ss;
{$ifdef FPC_HAS_CPSTRING}
SetCodePage(s,cp,false);
{$endif FPC_HAS_CPSTRING}
end;
Procedure fpc_AnsiStr_UInt(v : ValUInt;Len : SizeInt; out S : RawByteString{$ifdef FPC_HAS_CPSTRING};cp : TSystemCodePage{$endif FPC_HAS_CPSTRING});[Public,Alias : 'FPC_ANSISTR_VALUINT']; compilerproc; inline;
Var
SS : ShortString;
begin
str(v:Len,SS);
S:=SS;
{$ifdef FPC_HAS_CPSTRING}
SetCodePage(s,cp,false);
{$endif FPC_HAS_CPSTRING}
end;
Procedure fpc_AnsiStr_SInt(v : ValSInt;Len : SizeInt; out S : RawByteString{$ifdef FPC_HAS_CPSTRING};cp : TSystemCodePage{$endif FPC_HAS_CPSTRING});[Public,Alias : 'FPC_ANSISTR_VALSINT']; compilerproc; inline;
Var
SS : ShortString;
begin
str (v:Len,SS);
S:=SS;
{$ifdef FPC_HAS_CPSTRING}
SetCodePage(s,cp,false);
{$endif FPC_HAS_CPSTRING}
end;
{$ifndef CPU64}
Procedure fpc_AnsiStr_QWord(v : QWord;Len : SizeInt; out S : RawByteString{$ifdef FPC_HAS_CPSTRING};cp : TSystemCodePage{$endif FPC_HAS_CPSTRING});[Public,Alias : 'FPC_ANSISTR_QWORD']; compilerproc; inline;
Var
SS : ShortString;
begin
str(v:Len,SS);
S:=SS;
{$ifdef FPC_HAS_CPSTRING}
SetCodePage(s,cp,false);
{$endif FPC_HAS_CPSTRING}
end;
Procedure fpc_AnsiStr_Int64(v : Int64; Len : SizeInt; out S : RawByteString{$ifdef FPC_HAS_CPSTRING};cp : TSystemCodePage{$endif FPC_HAS_CPSTRING});[Public,Alias : 'FPC_ANSISTR_INT64']; compilerproc; inline;
Var
SS : ShortString;
begin
str (v:Len,SS);
S:=SS;
{$ifdef FPC_HAS_CPSTRING}
SetCodePage(s,cp,false);
{$endif FPC_HAS_CPSTRING}
end;
{$endif CPU64}
{$if defined(CPU16) or defined(CPU8)}
Procedure fpc_AnsiStr_LongWord(v : LongWord;Len : SizeInt; out S : RawByteString{$ifdef FPC_HAS_CPSTRING};cp : TSystemCodePage{$endif FPC_HAS_CPSTRING});[Public,Alias : 'FPC_ANSISTR_LONGWORD']; compilerproc; inline;
Var
SS : ShortString;
begin
str(v:Len,SS);
S:=SS;
{$ifdef FPC_HAS_CPSTRING}
SetCodePage(s,cp,false);
{$endif FPC_HAS_CPSTRING}
end;
Procedure fpc_AnsiStr_LongInt(v : LongInt; Len : SizeInt; out S : RawByteString{$ifdef FPC_HAS_CPSTRING};cp : TSystemCodePage{$endif FPC_HAS_CPSTRING});[Public,Alias : 'FPC_ANSISTR_LONGINT']; compilerproc; inline;
Var
SS : ShortString;
begin
str (v:Len,SS);
S:=SS;
{$ifdef FPC_HAS_CPSTRING}
SetCodePage(s,cp,false);
{$endif FPC_HAS_CPSTRING}
end;
Procedure fpc_AnsiStr_Word(v : Word;Len : SizeInt; out S : RawByteString{$ifdef FPC_HAS_CPSTRING};cp : TSystemCodePage{$endif FPC_HAS_CPSTRING});[Public,Alias : 'FPC_ANSISTR_WORD']; compilerproc; inline;
Var
SS : ShortString;
begin
str(v:Len,SS);
S:=SS;
{$ifdef FPC_HAS_CPSTRING}
SetCodePage(s,cp,false);
{$endif FPC_HAS_CPSTRING}
end;
Procedure fpc_AnsiStr_SmallInt(v : SmallInt; Len : SizeInt; out S : RawByteString{$ifdef FPC_HAS_CPSTRING};cp : TSystemCodePage{$endif FPC_HAS_CPSTRING});[Public,Alias : 'FPC_ANSISTR_SMALLINT']; compilerproc; inline;
Var
SS : ShortString;
begin
str (v:Len,SS);
S:=SS;
{$ifdef FPC_HAS_CPSTRING}
SetCodePage(s,cp,false);
{$endif FPC_HAS_CPSTRING}
end;
{$endif CPU16 or CPU8}
Procedure {$ifdef VER3_0}Delete{$else}fpc_ansistr_delete{$endif}(Var S : RawByteString; Index,Size: SizeInt);
Var
LS : SizeInt;
begin
ls:=Length(S);
If (Index>LS) or (Index<=0) or (Size<=0) then
exit;
UniqueString(S);
If (Size>LS-Index) then // Size+Index gives overflow ??
Size:=LS-Index+1;
If (Size<=LS-Index) then
begin
Dec(Index);
fpc_pchar_ansistr_intern_charmove(PAnsiChar(S),Index+Size,S,Index,LS-Index-Size+1);
end;
Setlength(S,LS-Size);
end;
Procedure {$ifdef VER3_0}Insert{$else}fpc_ansistr_insert{$endif}(Const Source : RawByteString; Var S : RawByteString; Index : SizeInt);
var
Temp : RawByteString;
LS : SizeInt;
cp : TSystemCodePage;
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);
SetLength(Temp,Length(Source)+LS);
if length(S)<>0 then
cp:=TranslatePlaceholderCP(StringCodePage(S))
else
cp:=TranslatePlaceholderCP(StringCodePage(Source));
SetCodePage(Temp,cp,false);
If Index>0 then
fpc_pchar_ansistr_intern_charmove(PAnsiChar(S),0,Temp,0,Index);
fpc_pchar_ansistr_intern_charmove(PAnsiChar(Source),0,Temp,Index,Length(Source));
If (LS-Index)>0 then
fpc_pchar_ansistr_intern_charmove(PAnsiChar(S),Index,Temp,Length(Source)+Index,LS-Index);
S:=Temp;
end;
{$ifndef FPC_HAS_ANSISTR_OF_CHAR}
{$define FPC_HAS_ANSISTR_OF_CHAR}
Function StringOfChar(c : Ansichar;l : SizeInt) : AnsiString;
begin
SetLength(StringOfChar,l);
FillChar(Pointer(StringOfChar)^,Length(StringOfChar),c);
end;
{$endif FPC_HAS_ANSISTR_OF_CHAR}
{$ifdef FPC_HAS_CPSTRING}
Procedure fpc_setstring_ansistr_pansichar(out S : RawByteString; Buf : PAnsiChar; Len : SizeInt; cp: TSystemCodePage); rtlproc; compilerproc;
{$else}
Procedure SetString(out S : AnsiString; Buf : PAnsiChar; Len : SizeInt);
{$endif}
begin
SetLength(S,Len);
{$ifdef FPC_HAS_CPSTRING}
SetCodePage(S,cp,false);
{$endif}
If (Buf<>Nil) then
fpc_pchar_ansistr_intern_charmove(Buf,0,S,0,Len);
end;
{$ifdef FPC_HAS_CPSTRING}
Procedure fpc_setstring_ansistr_pwidechar(out S : RawByteString; Buf : PWideChar; Len : SizeInt; cp: TSystemCodePage); rtlproc; compilerproc;
{$else}
Procedure SetString(out S : AnsiString; Buf : PWideChar; Len : SizeInt);
{$endif}
begin
{$ifdef FPC_HAS_CPSTRING}
cp:=TranslatePlaceholderCP(cp);
{$endif}
if (Buf<>nil) and (Len>0) then
widestringmanager.Wide2AnsiMoveProc(Buf,S,{$ifdef FPC_HAS_CPSTRING}cp{$else}DefaultSystemCodePage{$endif},Len)
else
begin
SetLength(S, Len);
{$ifdef FPC_HAS_CPSTRING}
SetCodePage(S,cp,false);
{$endif}
end;
end;
{$ifndef FPC_HAS_UPCASE_ANSISTR}
{$define FPC_HAS_UPCASE_ANSISTR}
function upcase(const s : ansistring) : ansistring;
var
i : SizeInt;
begin
Setlength(result,length(s));
for i := 1 to length (s) do
result[i] := upcase(s[i]);
end;
{$endif FPC_HAS_UPCASE_ANSISTR}
{$ifndef FPC_HAS_LOWERCASE_ANSISTR}
{$define FPC_HAS_LOWERCASE_ANSISTR}
function lowercase(const s : ansistring) : ansistring;
var
i : SizeInt;
begin
Setlength(result,length(s));
for i := 1 to length (s) do
result[i] := lowercase(s[i]);
end;
{$endif FPC_HAS_LOWERCASE_ANSISTR}
{$ifndef FPC_HAS_ANSISTR_STRINGCODEPAGE}
{$define FPC_HAS_ANSISTR_STRINGCODEPAGE}
function StringCodePage(const S: RawByteString): TSystemCodePage; overload;
begin
{$ifdef FPC_HAS_CPSTRING}
if assigned(Pointer(S)) then
Result:=PAnsiRec(pointer(S)-AnsiFirstOff)^.CodePage
else
{$endif FPC_HAS_CPSTRING}
Result:=DefaultSystemCodePage;
end;
{$endif FPC_HAS_ANSISTR_STRINGCODEPAGE}
{$ifndef FPC_HAS_ANSISTR_STRINGELEMENTSIZE}
{$define FPC_HAS_ANSISTR_STRINGELEMENTSIZE}
function StringElementSize(const S: RawByteString): Word; overload;
begin
if assigned(Pointer(S)) then
Result:=PAnsiRec(pointer(S)-AnsiFirstOff)^.ElementSize
else
Result:=SizeOf(AnsiChar);
end;
{$endif FPC_HAS_ANSISTR_STRINGELEMENTSIZE}
{$ifndef FPC_HAS_ANSISTR_STRINGREFCOUNT}
{$define FPC_HAS_ANSISTR_STRINGREFCOUNT}
function StringRefCount(const S: RawByteString): SizeInt; overload;
begin
if assigned(Pointer(S)) then
Result:=PAnsiRec(pointer(S)-AnsiFirstOff)^.Ref
else
Result:=0;
end;
{$endif FPC_HAS_ANSISTR_STRINGREFCOUNT}
{$ifndef FPC_HAS_ANSISTR_SETCODEPAGE}
{$define FPC_HAS_ANSISTR_SETCODEPAGE}
procedure InternalSetCodePage(var s : RawByteString; CodePage : TSystemCodePage; Convert : Boolean = True);
begin
if Convert then
begin
{$ifdef FPC_HAS_CPSTRING}
s:=fpc_AnsiStr_To_AnsiStr(s,CodePage);
{$else FPC_HAS_CPSTRING}
UniqueString(s);
PAnsiRec(pointer(s)-AnsiFirstOff)^.CodePage:=CodePage;
{$endif FPC_HAS_CPSTRING}
end
else
begin
UniqueString(s);
PAnsiRec(pointer(s)-AnsiFirstOff)^.CodePage:=CodePage;
end;
end;
{ use this wrapper for the simple case to avoid the generation of a temp. ansistring which causes
extra exception frames }
procedure SetCodePage(var s : RawByteString; CodePage : TSystemCodePage; Convert : Boolean = True);
var
OrgCodePage,
TranslatedCodePage,
TranslatedCurrentCodePage: TSystemCodePage;
begin
if Length(S)=0 then
exit;
{ if the codepage are identical, we don't have to do anything (even if the
string has multiple references) }
OrgCodePage:=PAnsiRec(pointer(S)-AnsiFirstOff)^.CodePage;
if OrgCodePage=CodePage then
exit;
{ if we're just replacing a placeholder code page with its actual value or
vice versa, we don't have to perform any conversion }
TranslatedCurrentCodePage:=TranslatePlaceholderCP(OrgCodePage);
TranslatedCodePage:=TranslatePlaceholderCP(CodePage);
Convert:=Convert and
(TranslatedCurrentCodePage<>TranslatedCodePage);
if not Convert and (PAnsiRec(pointer(S)-AnsiFirstOff)^.Ref=1) then
PAnsiRec(pointer(S)-AnsiFirstOff)^.CodePage:=CodePage
else
InternalSetCodePage(S,CodePage,Convert);
end;
{$endif FPC_HAS_ANSISTR_SETCODEPAGE}
procedure SetMultiByteConversionCodePage(CodePage: TSystemCodePage);
begin
DefaultSystemCodePage:=CodePage;
end;
procedure SetMultiByteFileSystemCodePage(CodePage: TSystemCodePage);
begin
DefaultFileSystemCodePage:=CodePage;
end;
procedure SetMultiByteRTLFileSystemCodePage(CodePage: TSystemCodePage);
begin
DefaultRTLFileSystemCodePage:=CodePage;
end;
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