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//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4 (Public License)
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Anti-Grain Geometry - Version 2.4 Release Milano 3 (AggPas 2.4 RM3)
// Pascal Port By: Milan Marusinec alias Milano
// milan@marusinec.sk
// http://www.aggpas.org
// Copyright (c) 2005-2006
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//
// [Pascal Port History] -----------------------------------------------------
//
// 23.06.2006-Milano: ptrcomp adjustments
// 24.04.2006-Milano: Unit port establishment
//
{ agg_svg_exception.pas }
unit
agg_svg_exception ;
INTERFACE
{$I agg_mode.inc }
uses
SysUtils ,
agg_basics ;
{ TYPES DEFINITION }
type
svg_exception_ptr = ^svg_exception;
svg_exception = class(Exception )
m_msg : pointer;
constructor Construct; overload;
constructor Construct(fmt : PChar ); overload;
constructor Construct(exc : svg_exception_ptr ); overload;
procedure Free;
function _msg : char_ptr;
end;
{ GLOBAL PROCEDURES }
function get_double(ptr : agg_basics.char_ptr ) : double;
IMPLEMENTATION
{ LOCAL VARIABLES & CONSTANTS }
{ UNIT IMPLEMENTATION }
{ CONSTRUCT }
constructor svg_exception.Construct;
begin
m_msg:=NIL;
end;
{ CONSTRUCT }
constructor svg_exception.Construct(fmt : PChar );
var
max : int;
begin
m_msg:=NIL;
if agg_getmem(m_msg ,4096 ) then
begin
max:=StrLen(fmt );
if max > 4095 then
max:=4095;
move(fmt[0 ] ,m_msg^ ,max );
int8_ptr(ptrcomp(m_msg ) + max )^:=0;
end;
end;
{ CONSTRUCT }
constructor svg_exception.Construct(exc : svg_exception_ptr );
var
max : int;
begin
m_msg:=NIL;
if (exc <> NIL ) and
(exc.m_msg <> NIL ) then
if agg_getmem(m_msg ,4096 ) then
begin
max:=StrLen(exc.m_msg );
if max > 4095 then
max:=4095;
move(exc.m_msg^ ,m_msg^ ,max );
int8_ptr(ptrcomp(m_msg ) + max )^:=0;
end;
end;
{ FREE }
procedure svg_exception.Free;
begin
if m_msg <> NIL then
agg_freemem(m_msg ,4096 );
end;
{ _MSG }
function svg_exception._msg;
begin
result:=char_ptr(m_msg );
end;
{ GET_DOUBLE }
function get_double;
var
buf : array[0..49 ] of char;
dst ,
max : char_ptr;
err : integer;
begin
dst:=@buf[0 ];
max:=@buf[48 ];
while ptr^ <> #0 do
begin
case ptr^ of
'-' ,'.' ,'0'..'9' :
if dst <> max then
begin
dst^:=ptr^;
inc(ptrcomp(dst ) );
end
else
break;
else
break;
end;
inc(ptrcomp(ptr ) );
end;
dst^:=#0;
val(PChar(@buf[0 ] ) ,result ,err );
end;
END.
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