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fpc/rtl/inc/wstrings.inc

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{
$Id$
This file is part of the Free Pascal run time library.
Copyright (c) 1999-2001 by Florian Klaempfl,
member of the Free Pascal development team.
This file implements support routines for WideStrings with 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 file contains the implementation of the WideString type,
and all things that are needed for it.
WideString is defined as a 'silent' pwidechar :
a pwidechar that points to :
@-12 : Longint for maximum size;
@-8 : Longint for size;
@-4 : Longint for reference count;
@ : String + Terminating #0;
Pwidechar(Widestring) is a valid typecast.
So WS[i] is converted to the address @WS+i-1.
Constants should be assigned a reference count of -1
Meaning that they can't be disposed of.
}
Type
PWideRec = ^TWideRec;
TWideRec = Packed Record
Maxlen,
len,
ref : Longint;
First : WideChar;
end;
Const
WideRecLen = SizeOf(TWideRec);
WideFirstOff = SizeOf(TWideRec)-sizeof(WideChar);
{
Default WideChar <-> Char conversion is to only convert the
lower 127 chars, all others are translated to spaces.
These routines can be overwritten for the Current Locale
}
procedure Wide2AnsiMove(source:pwidechar;dest:pchar;len:longint);
var
i : longint;
begin
for i:=1to len do
begin
if word(source^)<128 then
dest^:=char(word(source^))
else
dest^:=' ';
inc(dest);
inc(source);
end;
end;
procedure Ansi2WideMove(source:pchar;dest:pwidechar;len:longint);
var
i : longint;
begin
for i:=1to len do
begin
if byte(source^)<128 then
dest^:=widechar(byte(source^))
else
dest^:=' ';
inc(dest);
inc(source);
end;
end;
Type
TWide2AnsiMove=procedure(source:pwidechar;dest:pchar;len:longint);
TAnsi2WideMove=procedure(source:pchar;dest:pwidechar;len:longint);
Const
Wide2AnsiMoveProc:TWide2AnsiMove=@Wide2AnsiMove;
Ansi2WideMoveProc:TAnsi2WideMove=@Ansi2WideMove;
(*
Procedure UniqueWideString(Var S : WideString); [Public,Alias : 'FPC_WIDESTR_UNIQUE'];
{
Make sure reference count of S is 1,
using copy-on-write semantics.
}
begin
end;
*)
{****************************************************************************
Internal functions, not in interface.
****************************************************************************}
{$ifdef WideStrDebug}
Procedure DumpWideRec(S : Pointer);
begin
If S=Nil then
Writeln ('String is nil')
Else
Begin
With PWideRec(S-WideFirstOff)^ do
begin
Write ('(Maxlen: ',maxlen);
Write (' Len:',len);
Writeln (' Ref: ',ref,')');
end;
end;
end;
{$endif}
Function NewWideString(Len : Longint) : Pointer;
{
Allocate a new WideString on the heap.
initialize it to zero length and reference count 1.
}
Var
P : Pointer;
begin
{ Also add +1 for a terminating zero }
GetMem(P,Len+Len+WideRecLen);
If P<>Nil then
begin
PWideRec(P)^.Maxlen:=Len; { Maximal length }
PWideRec(P)^.Len:=0; { Initial length }
PWideRec(P)^.Ref:=1; { Set reference count }
PWideRec(P)^.First:=#0; { Terminating #0 }
inc(p,WideFirstOff); { Points to string now }
end;
NewWideString:=P;
end;
Procedure DisposeWideString(Var S : Pointer);
{
Deallocates a WideString From the heap.
}
begin
If S=Nil then
exit;
Dec (Longint(S),WideFirstOff);
FreeMem (S);
S:=Nil;
end;
Procedure fpc_WideStr_Decr_Ref (Var S : Pointer);saveregisters;[Public,Alias:'FPC_WIDESTR_DECR_REF']; {$ifdef hascompilerproc} compilerproc; {$endif}
{
Decreases the ReferenceCount of a non constant widestring;
If the reference count is zero, deallocate the string;
}
Type
plongint = ^longint;
Var
l : plongint;
Begin
{ Zero string }
If S=Nil then exit;
{ check for constant strings ...}
l:=@PWIDEREC(S-WideFirstOff)^.Ref;
If l^<0 then exit;
{ declocked does a MT safe dec and returns true, if the counter is 0 }
If declocked(l^) then
{ Ref count dropped to zero }
DisposeWideString (S); { Remove...}
{ this pointer is not valid anymore, so set it to zero }
S:=nil;
end;
{$ifdef hascompilerproc}
{ alias for internal use }
Procedure fpc_WideStr_Decr_Ref (Var S : Pointer);saveregisters;[external name 'FPC_WIDESTR_DECR_REF'];
{$endif compilerproc}
{$ifdef hascompilerproc}
Procedure fpc_WideStr_Incr_Ref (S : Pointer);saveregisters;[Public,Alias:'FPC_WIDESTR_INCR_REF']; {$ifdef hascompilerproc} compilerproc; {$endif}
{$else}
Procedure fpc_WideStr_Incr_Ref (Var S : Pointer);saveregisters;[Public,Alias:'FPC_WIDESTR_INCR_REF'];
{$endif compilerproc}
Begin
If S=Nil then
exit;
{ Let's be paranoid : Constant string ??}
If PWideRec(S-WideFirstOff)^.Ref<0 then exit;
inclocked(PWideRec(S-WideFirstOff)^.Ref);
end;
{$ifdef hascompilerproc}
{ alias for internal use }
Procedure fpc_WideStr_Incr_Ref (S : Pointer);saveregisters;[external name 'FPC_WIDESTR_INCR_REF'];
{$endif compilerproc}
function fpc_WideStr_To_ShortStr (high_of_res: longint;const S2 : WideString): shortstring;[Public, alias: 'FPC_WIDESTR_TO_SHORTSTR']; {$ifdef hascompilerproc} compilerproc; {$endif}
{
Converts a WideString to a ShortString;
}
Var
Size : Longint;
begin
if S2='' then
fpc_WideStr_To_ShortStr:=''
else
begin
Size:=Length(S2);
If Size>high_of_res then
Size:=high_of_res;
Wide2AnsiMoveProc(PWideChar(S2),PChar(@fpc_WideStr_To_ShortStr[1]),Size);
byte(fpc_WideStr_To_ShortStr[0]):=Size;
end;
end;
Function fpc_ShortStr_To_WideStr (Const S2 : ShortString): WideString; {$ifdef hascompilerproc} compilerproc; {$endif}
{
Converts a ShortString to a WideString;
}
Var
Size : Longint;
begin
Size:=Length(S2);
Setlength (fpc_ShortStr_To_WideStr,Size);
if Size>0 then
begin
Ansi2WideMoveProc(PChar(@S2[1]),PWideChar(Pointer(fpc_ShortStr_To_WideStr)),Size);
{ Terminating Zero }
PWideChar(Pointer(fpc_ShortStr_To_WideStr)+Size*sizeof(WideChar))^:=#0;
end;
end;
{ old style helper }
{$ifndef hascompilerproc}
Procedure fpc_ShortStr_To_WideStr (Var S1 : Pointer; Const S2 : ShortString);[Public, alias: 'FPC_SHORTSTR_TO_WIDESTR'];
begin
s1 := pointer(fpc_ShortStr_To_WideStr(s2));
end;
{$endif hascompilerproc}
Function fpc_WideStr_To_AnsiStr (const S2 : WideString): AnsiString; {$ifdef hascompilerproc} compilerproc; {$endif}
{
Converts a WideString to an AnsiString
}
Var
Size : Longint;
begin
if s2='' then
exit;
Size:=Length(WideString(S2));
Setlength (fpc_WideStr_To_AnsiStr,Size);
if Size>0 then
begin
Wide2AnsiMoveProc(PWideChar(Pointer(S2)),PChar(Pointer(fpc_WideStr_To_AnsiStr)),Size);
{ Terminating Zero }
PChar(Pointer(fpc_WideStr_To_AnsiStr)+Size)^:=#0;
end;
end;
{ old style helper }
{$ifndef hascompilerproc}
Procedure fpc_WideStr_To_AnsiStr (Var S1 : Pointer;const S2 : WideString);[Public, alias: 'FPC_WIDESTR_TO_ANSISTR'];
begin
s1 := pointer(fpc_WideStr_To_AnsiStr(s2));
end;
{$endif hascompilerproc}
Function fpc_AnsiStr_To_WideStr (Const S2 : AnsiString): WideString; {$ifdef hascompilerproc} compilerproc; {$endif}
{
Converts an AnsiString to a WideString;
}
Var
Size : Longint;
begin
if s2='' then
exit;
Size:=Length(S2);
Setlength (fpc_AnsiStr_To_WideStr,Size);
if Size>0 then
begin
Ansi2WideMoveProc(PChar(S2),PWideChar(Pointer(fpc_AnsiStr_To_WideStr)),Size);
{ Terminating Zero }
PWideChar(Pointer(fpc_AnsiStr_To_WideStr)+Size*sizeof(WideChar))^:=#0;
end;
end;
{ old style helper }
{$ifndef hascompilerproc}
Procedure fpc_AnsiStr_To_WideStr (Var S1 : Pointer; Const S2 : AnsiString);[Public, alias: 'FPC_ANSISTR_TO_WIDESTR'];
begin
s1 := pointer(fpc_AnsiStr_To_WideStr(s2));
end;
{$endif hascompilerproc}
{ checked against the ansistring routine, 2001-05-27 (FK) }
Procedure fpc_WideStr_Assign (Var S1 : Pointer;S2 : Pointer);[Public,Alias:'FPC_WIDESTR_ASSIGN']; {$ifdef hascompilerproc} compilerproc; {$endif}
{
Assigns S2 to S1 (S1:=S2), taking in account reference counts.
}
begin
If S2<>nil then
If PWideRec(S2-WideFirstOff)^.Ref>0 then
Inc(PWideRec(S2-WideFirstOff)^.ref);
{ Decrease the reference count on the old S1 }
fpc_widestr_decr_ref (S1);
{ And finally, have S1 pointing to S2 (or its copy) }
S1:=S2;
end;
{$ifdef hascompilerproc}
{ alias for internal use }
Procedure fpc_WideStr_Assign (Var S1 : Pointer;S2 : Pointer);[external name 'FPC_WIDESTR_ASSIGN'];
{$endif hascompilerproc}
{ checked against the ansistring routine, 2001-05-27 (FK) }
{$ifdef hascompilerproc}
function fpc_WideStr_Concat (const S1,S2 : WideString): WideString; compilerproc;
var
S3: WideString absolute result;
{$else hascompilerproc}
Procedure fpc_WideStr_Concat (S1,S2 : WideString;var S3 : WideString);[Public, alias: 'FPC_WIDESTR_CONCAT'];
{$endif hascompilerproc}
{
Concatenates 2 WideStrings : S1+S2.
Result Goes to S3;
}
Var
Size,Location : Longint;
begin
{ only assign if s1 or s2 is empty }
if (S1='') then
S3 := S2
else
if (S2='') then
S3 := S1
else
begin
{ create new result }
Size:=Length(S2);
Location:=Length(S1);
SetLength (S3,Size+Location);
Move (S1[1],S3[1],Location*sizeof(WideChar));
Move (S2[1],S3[location+1],(Size+1)*sizeof(WideChar));
end;
end;
Function fpc_Char_To_WideStr(const c : Char): WideString; {$ifdef hascompilerproc} compilerproc; {$endif}
{
Converts a Char to a WideString;
}
begin
if c = #0 then
{ result is automatically set to '' }
exit;
Setlength (fpc_Char_To_WideStr,1);
fpc_Char_To_WideStr[1]:=c;
{ Terminating Zero }
PWideChar(Pointer(fpc_Char_To_WideStr)+sizeof(WideChar))^:=#0;
end;
{ old style helper }
{$ifndef hascompilerproc}
Procedure fpc_Char_To_WideStr(var S1 : Pointer; c : Char);[Public, alias: 'FPC_CHAR_TO_WIDESTR'];
begin
s1 := pointer(fpc_Char_To_WideStr(c));
end;
{$endif hascompilerproc}
Function fpc_PChar_To_WideStr(const p : pchar): WideString; {$ifdef hascompilerproc} compilerproc; {$endif}
Var
L : Longint;
begin
if (not assigned(p)) or (p[0]=#0) Then
{ result is automatically set to '' }
exit;
l:=IndexChar(p^,-1,#0);
SetLength(fpc_PChar_To_WideStr,L);
Ansi2WideMoveProc(P,PWideChar(Pointer(fpc_PChar_To_WideStr)),l);
end;
{ old style helper }
{$ifndef hascompilerproc}
Procedure fpc_PChar_To_WideStr(var a : WideString;p : pchar);[Public,Alias : 'FPC_PCHAR_TO_WIDESTR']; {$ifdef hascompilerproc} compilerproc; {$endif}
begin
pointer(a) := pointer(fpc_PChar_To_WideStr(p));
end;
{$endif hascompilerproc}
Function fpc_CharArray_To_WideStr(const arr: array of char): WideString; {$ifdef hascompilerproc} compilerproc; {$endif}
var
i : longint;
begin
if arr[0]=#0 Then
{ result is automatically set to '' }
exit;
i:=IndexChar(arr,high(arr)+1,#0);
if i = -1 then
i := high(arr)+1;
SetLength(fpc_CharArray_To_WideStr,i);
Ansi2WideMoveProc (pchar(@arr),PWideChar(Pointer(fpc_CharArray_To_WideStr)),i);
end;
{ old style helper }
{$ifndef hascompilerproc}
Procedure fpc_CharArray_To_WideStr(var a : WideString; p: pointer; len: longint); [Public,Alias : 'FPC_CHARARRAY_TO_WIDESTR']; {$ifdef hascompilerproc} compilerproc; {$endif}
var
src: pchar;
i: longint;
begin
src := pchar(p);
if src[0]=#0 Then
begin
pointer(a) := nil;
exit;
end;
i:=IndexChar(src^,len,#0);
if i = -1 then
i := len;
pointer(a) := NewWideString(i);
Ansi2WideMoveProc (src,PWideChar(Pointer(@a[1])),i);
end;
{$endif not hascompilerproc}
{$ifdef hascompilerproc}
{ inside the compiler, the resulttype is modified to that of the actual }
{ chararray we're converting to (JM) }
function fpc_widestr_to_chararray(arraysize: longint; const src: WideString): fpc_big_chararray;[public,alias: 'FPC_WIDESTR_TO_CHARARRAY']; compilerproc;
var
len: longint;
begin
len := length(src);
if len > arraysize then
len := arraysize;
{ make sure we don't dereference src if it can be nil (JM) }
if len > 0 then
wide2ansimoveproc(pwidechar(@src[1]),pchar(@fpc_widestr_to_chararray[0]),len);
fillchar(fpc_widestr_to_chararray[len],arraysize-len,0);
end;
{$endif hascompilerproc}
Function fpc_WideStr_Compare(const S1,S2 : WideString): Longint;[Public,Alias : 'FPC_WIDESTR_COMPARE']; {$ifdef hascompilerproc} compilerproc; {$endif}
{
Compares 2 WideStrings;
The result is
<0 if S1<S2
0 if S1=S2
>0 if S1>S2
}
Var
MaxI,Temp : Longint;
begin
if pointer(S1)=pointer(S2) then
begin
fpc_WideStr_Compare:=0;
exit;
end;
Maxi:=Length(S1);
temp:=Length(S2);
If MaxI>Temp then
MaxI:=Temp;
Temp:=CompareWord(S1[1],S2[1],MaxI);
if temp=0 then
temp:=Length(S1)-Length(S2);
fpc_WideStr_Compare:=Temp;
end;
Procedure fpc_WideStr_CheckZero(p : pointer);[Public,Alias : 'FPC_WIDESTR_CHECKZERO']; {$ifdef hascompilerproc} compilerproc; {$endif}
begin
if p=nil then
HandleErrorFrame(201,get_frame);
end;
Procedure fpc_WideStr_CheckRange(len,index : longint);[Public,Alias : 'FPC_WIDESTR_RANGECHECK']; {$ifdef hascompilerproc} compilerproc; {$endif}
begin
if (index>len) or (Index<1) then
HandleErrorFrame(201,get_frame);
end;
{$ifndef INTERNSETLENGTH}
Procedure SetLength (Var S : WideString; l : Longint);
{$else INTERNSETLENGTH}
Procedure fpc_WideStr_SetLength (Var S : WideString; l : Longint);[Public,Alias : 'FPC_WIDESTR_SETLENGTH']; {$ifdef hascompilerproc} compilerproc; {$endif}
{$endif INTERNSETLENGTH}
{
Sets The length of string S to L.
Makes sure S is unique, and contains enough room.
}
Var
Temp : Pointer;
begin
if (l>0) then
begin
if Pointer(S)=nil then
begin
{ Need a complete new string...}
Pointer(s):=NewWideString(l);
end
else
If (PWideRec(Pointer(S)-WideFirstOff)^.Maxlen < L) or
(PWideRec(Pointer(S)-WideFirstOff)^.Ref <> 1) then
begin
{ Reallocation is needed... }
Temp:=Pointer(NewWideString(L));
if Length(S)>0 then
Move(Pointer(S)^,Temp^,L*sizeof(WideChar));
fpc_WideStr_decr_ref(Pointer(S));
Pointer(S):=Temp;
end;
{ Force nil termination in case it gets shorter }
PWideChar(Pointer(S)+l*sizeof(WideChar))^:=#0;
PWideRec(Pointer(S)-WideFirstOff)^.Len:=l;
end
else
begin
{ Length=0 }
if Pointer(S)<>nil then
fpc_WideStr_decr_ref (Pointer(S));
Pointer(S):=Nil;
end;
end;
{*****************************************************************************
Public functions, In interface.
*****************************************************************************}
{$ifndef INTERNLENGTH}
Function Length (Const S : WideString) : Longint;
{
Returns the length of an WideString.
Takes in acount that zero strings are NIL;
}
begin
If Pointer(S)=Nil then
Length:=0
else
Length:=PWideRec(Pointer(S)-WideFirstOff)^.Len;
end;
{$endif INTERNLENGTH}
{ overloaded version of UniqueString for interface }
procedure UniqueString(Var S : WideString); [external name 'FPC_WIDESTR_UNIQUE'];
Procedure fpc_widestr_Unique(Var S : WideString); [Public,Alias : 'FPC_WIDESTR_UNIQUE']; {$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 PWideRec(Pointer(S)-WideFirstOff)^.Ref<>1 then
begin
L:=PWideRec(Pointer(S)-WideFirstOff)^.len;
SNew:=NewWideString (L);
Move (PWideChar(S)^,SNew^,(L+1)*sizeof(WideChar));
PWideRec(SNew-WideFirstOff)^.len:=L;
fpc_widestr_decr_ref (Pointer(S)); { Thread safe }
Pointer(S):=SNew;
end;
end;
Function Copy (Const S : WideString; Index,Size : Longint) : WideString;
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(NewWideString (Size));
if ResultAddress<>Nil then
begin
Move (PWideChar(S)[Index],ResultAddress^,Size*sizeof(WideChar));
PWideRec(ResultAddress-WideFirstOff)^.Len:=Size;
PWideChar(ResultAddress+Size*sizeof(WideChar))^:=#0;
end;
end;
Pointer(Copy):=ResultAddress;
end;
Function Pos (Const Substr : WideString; Const Source : WideString) : Longint;
var
i,MaxLen : StrLenInt;
pc : pwidechar;
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
(CompareWord(Substr[1],pc^,Length(SubStr))=0) then
begin
Pos:=i;
exit;
end;
inc(pc);
end;
end;
end;
{ Faster version for a widechar alone }
Function Pos (c : WideChar; Const s : WideString) : Longint;
var
i: longint;
pc : pwidechar;
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;
{ 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 $h+ (JM) }
Function Pos (c : Char; Const s : WideString) : Longint;
var
i: longint;
wc : widechar;
pc : pwidechar;
begin
wc:=c;
pc:=@s[1];
for i:=1 to length(s) do
begin
if pc^=wc then
begin
pos:=i;
exit;
end;
inc(pc);
end;
pos:=0;
end;
Procedure Delete (Var S : WideString; Index,Size: Longint);
Var
LS : Longint;
begin
If Length(S)=0 then
exit;
if index<=0 then
begin
inc(Size,index-1);
index:=1;
end;
LS:=PWideRec(Pointer(S)-WideFirstOff)^.Len;
if (Index<=LS) and (Size>0) then
begin
UniqueString (S);
if Size+Index>LS then
Size:=LS-Index+1;
if Index+Size<=LS then
begin
Dec(Index);
Move(PWideChar(S)[Index+Size],PWideChar(S)[Index],(LS-Index+1)*sizeof(WideChar));
end;
Setlength(s,LS-Size);
end;
end;
Procedure Insert (Const Source : WideString; Var S : WideString; Index : Longint);
var
Temp : WideString;
LS : Longint;
begin
If Length(Source)=0 then
exit;
if index <= 0 then
index := 1;
Ls:=Length(S);
if index > LS then
index := LS+1;
Dec(Index);
Pointer(Temp) := NewWideString(Length(Source)+LS);
SetLength(Temp,Length(Source)+LS);
If Index>0 then
move (PWideChar(S)^,PWideChar(Temp)^,Index*sizeof(WideChar));
Move (PWideChar(Source)^,PWideChar(Temp)[Index],Length(Source)*sizeof(WideChar));
If (LS-Index)>0 then
Move(PWideChar(S)[Index],PWideChar(temp)[Length(Source)+index],(LS-Index)*sizeof(WideChar));
S:=Temp;
end;
{!!!:Procedure SetString (Var S : WideString; Buf : PWideChar; Len : Longint);
begin
SetLength(S,Len);
Move (Buf[0],S[1],Len*2);
end;}
Function fpc_Val_Real_WideStr(Const S : WideString; Var Code : ValSInt): ValReal; [public, alias:'FPC_VAL_REAL_WIDESTR']; {$ifdef hascompilerproc} compilerproc; {$endif}
Var
SS : String;
begin
fpc_Val_Real_WideStr := 0;
if length(S) > 255 then
code := 256
else
begin
SS := S;
Val(SS,fpc_Val_Real_WideStr,code);
end;
end;
Function fpc_Val_UInt_WideStr (Const S : WideString; Var Code : ValSInt): ValUInt; [public, alias:'FPC_VAL_UINT_WIDESTR']; {$ifdef hascompilerproc} compilerproc; {$endif}
Var
SS : ShortString;
begin
fpc_Val_UInt_WideStr := 0;
if length(S) > 255 then
code := 256
else
begin
SS := S;
Val(SS,fpc_Val_UInt_WideStr,code);
end;
end;
Function fpc_Val_SInt_WideStr (DestSize: longint; Const S : WideString; Var Code : ValSInt): ValSInt; [public, alias:'FPC_VAL_SINT_WIDESTR']; {$ifdef hascompilerproc} compilerproc; {$endif}
Var
SS : ShortString;
begin
fpc_Val_SInt_WideStr:=0;
if length(S)>255 then
code:=256
else
begin
SS := S;
fpc_Val_SInt_WideStr := fpc_Val_SInt_ShortStr(DestSize,SS,Code);
end;
end;
Function fpc_Val_qword_WideStr (Const S : WideString; Var Code : ValSInt): qword; [public, alias:'FPC_VAL_QWORD_WIDESTR']; {$ifdef hascompilerproc} compilerproc; {$endif}
Var
SS : ShortString;
begin
fpc_Val_qword_WideStr:=0;
if length(S)>255 then
code:=256
else
begin
SS := S;
Val(SS,fpc_Val_qword_WideStr,Code);
end;
end;
Function fpc_Val_int64_WideStr (Const S : WideString; Var Code : ValSInt): Int64; [public, alias:'FPC_VAL_INT64_WIDESTR']; {$ifdef hascompilerproc} compilerproc; {$endif}
Var
SS : ShortString;
begin
fpc_Val_int64_WideStr:=0;
if length(S)>255 then
code:=256
else
begin
SS := S;
Val(SS,fpc_Val_int64_WideStr,Code);
end;
end;
procedure fpc_WideStr_Float(d : ValReal;len,fr,rt : longint;var s : WideString);[public,alias:'FPC_WIDESTR_FLOAT']; {$ifdef hascompilerproc} compilerproc; {$endif}
var
ss : shortstring;
begin
str_real(len,fr,d,treal_type(rt),ss);
s:=ss;
end;
Procedure fpc_WideStr_Cardinal(C : Cardinal;Len : Longint; Var S : WideString);[Public,Alias : 'FPC_WIDESTR_CARDINAL']; {$ifdef hascompilerproc} compilerproc; {$endif}
Var
SS : ShortString;
begin
str(C:Len,SS);
S:=SS;
end;
Procedure fpc_WideStr_Longint(L : Longint; Len : Longint; Var S : WideString);[Public,Alias : 'FPC_WIDESTR_LONGINT']; {$ifdef hascompilerproc} compilerproc; {$endif}
Var
SS : ShortString;
begin
Str (L:Len,SS);
S:=SS;
end;
{
$Log$
Revision 1.18 2002-07-29 21:28:17 florian
* several fixes to get further with linux/ppc system unit compilation
Revision 1.17 2002/04/26 15:19:05 peter
* use saveregisters for incr routines, saves also problems with
the optimizer
Revision 1.16 2002/04/25 20:14:57 peter
* updated compilerprocs
* incr ref count has now a value argument instead of var
Revision 1.15 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 1.14 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 1.13 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 1.12 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 1.11 2001/08/01 15:00:11 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 1.10 2001/07/16 12:33:08 jonas
* fixed wrong public alieases for val(widestring,...)
Revision 1.9 2001/07/09 21:15:41 peter
* Length made internal
* Add array support for Length
Revision 1.8 2001/07/08 21:00:18 peter
* various widestring updates, it works now mostly without charset
mapping supported
Revision 1.7 2001/05/27 14:28:03 florian
+ some procedures added
Revision 1.6 2000/11/06 23:17:15 peter
* removed some warnings
Revision 1.5 2000/11/06 20:34:24 peter
* changed ver1_0 defines to temporary defs
Revision 1.4 2000/10/21 18:20:17 florian
* a lot of small changes:
- setlength is internal
- win32 graph unit extended
....
Revision 1.3 2000/08/08 22:12:36 sg
* Implemented WideString helper functions (but they are not tested yet
due to the lack of full compiler support for WideString/WideChar!)
Revision 1.2 2000/07/13 11:33:46 michael
+ removed logs
}
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