added autodetection of utf8

used w3c regex to match all song lines whether they are utf8 lines and
decode it on match as utf8 and as latin1 otherwise

git-svn-id: svn://svn.code.sf.net/p/ultrastardx/svn/trunk@1964 b956fd51-792f-4845-bead-9b4dfca2ff2c

5 files changed, 990 insertions, 10 deletions

diff --git a/src/base/USong.pas b/src/base/USong.pas
index f8d465c7..f8698d43 100644
--- a/src/base/USong.pas
+++ b/src/base/USong.pas
@@ -114,7 +114,7 @@ type
     Mp3:        IPath;
     Background: IPath;
     Video:      IPath;
-    
+
     // sorting methods
     Genre:      UTF8String;
     Edition:    UTF8String;
@@ -127,7 +127,7 @@ type
     Creator:    UTF8String;
 
     CoverTex:   TTexture;
-    
+
     VideoGAP:   real;
     NotesGAP:   integer;
     Start:      real; // in seconds
@@ -180,8 +180,7 @@ uses
   UNote;   //needed for Player
 
 const
-  // use USDX < 1.1 encoding for backward compatibility
-  DEFAULT_ENCODING = encCP1252;
+  DEFAULT_ENCODING = encAuto;
 
 constructor TSong.Create();
 begin
@@ -381,7 +380,7 @@ begin
     LinePos := OldLinePos;
     raise EUSDXParseException.Create('Character expected');
   end;
-  Result := Str[1];  
+  Result := Str[1];
 end;
 
 {**
@@ -926,7 +925,7 @@ begin
     end
     else
     begin
-    
+
       //-----------
       //Required Attributes
       //-----------
@@ -1083,7 +1082,7 @@ begin
       begin
         AddCustomTag(Identifier, Value);
       end;
-      
+
     end; // End check for non-empty Value
 
     // read next line
@@ -1265,7 +1264,7 @@ begin
   //Sortings:
   Genre    := 'Unknown';
   Edition  := 'Unknown';
-  Language := 'Unknown'; 
+  Language := 'Unknown';
   Year := 0;
 
   // set to default encoding
diff --git a/src/base/UTextEncoding.pas b/src/base/UTextEncoding.pas
index bb3d0f1a..79e5a297 100644
--- a/src/base/UTextEncoding.pas
+++ b/src/base/UTextEncoding.pas
@@ -42,7 +42,9 @@ type
     encLocale,  // current locale (needs cwstring on linux)
     encUTF8,    // UTF-8
     encCP1250,  // Windows-1250 Central/Eastern Europe (used by Ultrastar)
-    encCP1252   // Windows-1252 Western Europe (used by UltraStar Deluxe < 1.1)
+    encCP1252,  // Windows-1252 Western Europe (used by UltraStar Deluxe < 1.1)
+    encAuto     // try to match the w3c regex and decode as unicode on match
+                // and as fallback if not match
   );
 
 const
@@ -88,7 +90,9 @@ function EncodingName(Encoding: TEncoding): AnsiString;
 implementation
 
 uses
-  StrUtils;
+  StrUtils,
+  pcre,
+  ULog;
 
 type
   IEncoder = interface
@@ -229,6 +233,7 @@ end;
 {$I ../encoding/UTF8.inc}
 {$I ../encoding/CP1250.inc}
 {$I ../encoding/CP1252.inc}
+{$I ../encoding/Auto.inc}
 
 initialization
   Encoders[encLocale] := TEncoderLocale.Create;
@@ -236,4 +241,7 @@ initialization
   Encoders[encCP1250] := TEncoderCP1250.Create;
   Encoders[encCP1252] := TEncoderCP1252.Create;
 
+  // use USDX < 1.1 encoding for backward compatibility (encCP1252)
+  Encoders[encAuto] := TEncoderAuto.Create(Encoders[encUTF8], Encoders[encCP1252]);
+
 end.
diff --git a/src/encoding/Auto.inc b/src/encoding/Auto.inc
new file mode 100644
index 00000000..bf512f95
--- /dev/null
+++ b/src/encoding/Auto.inc
@@ -0,0 +1,127 @@
+{* UltraStar Deluxe - Karaoke Game
+ *
+ * UltraStar Deluxe is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This 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.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ * $URL$
+ * $Id$
+ *}
+
+// Auto
+// try to match the w3c regex and decode as unicode on match and as fallback if not match
+// (copied from http://www.w3.org/International/questions/qa-forms-utf-8.en.php)
+//
+// m/\A(
+//    [\x09\x0A\x0D\x20-\x7E]            # ASCII
+//  | [\xC2-\xDF][\x80-\xBF]             # non-overlong 2-byte
+//  |  \xE0[\xA0-\xBF][\x80-\xBF]        # excluding overlongs
+//  | [\xE1-\xEC\xEE\xEF][\x80-\xBF]{2}  # straight 3-byte
+//  |  \xED[\x80-\x9F][\x80-\xBF]        # excluding surrogates
+//  |  \xF0[\x90-\xBF][\x80-\xBF]{2}     # planes 1-3
+//  | [\xF1-\xF3][\x80-\xBF]{3}          # planes 4-15
+//  |  \xF4[\x80-\x8F][\x80-\xBF]{2}     # plane 16
+// )*\z/x
+
+type
+  TEncoderAuto = class(TEncoder)
+  public
+    function GetName(): AnsiString; override;
+    function Encode(const InStr: UCS4String; out OutStr: AnsiString): boolean; override;
+    function Decode(const InStr: AnsiString; out OutStr: UCS4String): boolean; override;
+
+    constructor Create(const UTF8Encoder, FallbackEncoder: IEncoder);
+
+  private
+    FallbackEncoder: IEncoder;
+    UTF8Encoder: IEncoder;
+    Regex: PPCRE;
+    RegexExtra: PPCREExtra;
+  end;
+
+function PCREGetMem(Size: SizeInt): Pointer; cdecl;
+begin
+  GetMem(Result, Size);
+end;
+
+procedure PCREFreeMem(P: Pointer); cdecl;
+begin
+  FreeMem(P);
+end;
+
+constructor TEncoderAuto.Create(const UTF8Encoder, FallbackEncoder: IEncoder);
+var
+  Error: PChar;
+  ErrorOffset: Integer;
+begin
+  // NOTICE: Log.LogError() is not possible here because it isn't loaded
+  inherited Create();
+  self.FallbackEncoder := FallbackEncoder;
+  self.UTF8Encoder := UTF8Encoder;
+
+  // Load and initialize PCRE Library
+  LoadPCRE();
+  SetPCREMallocCallback(PCREGetMem);
+  SetPCREFreeCallback(PCREFreeMem);
+
+  // compile regex
+  self.Regex := pcre_compile('\A([\x09\x0A\x0D\x20-\x7E]|[\xC2-\xDF][\x80-\xBF]|\xE0[\xA0-\xBF][\x80-\xBF]|[\xE1-\xEC\xEE\xEF][\x80-\xBF]{2}|\xED[\x80-\x9F][\x80-\xBF]|\xF0[\x90-\xBF][\x80-\xBF]{2}|[\xF1-\xF3][\x80-\xBF]{3}|\xF4[\x80-\x8F][\x80-\xBF]{2})*\z', 0, @Error, @ErrorOffset, nil);
+
+  if self.Regex = Nil then
+  begin
+    writeln('ERROR:  UTF8 Regex compilation failed: ', AnsiString(Error), ' at ', ErrorOffset);
+  end
+  else
+  begin
+    // if compiled successfull, try to get more informations the speed up the matching
+    self.RegexExtra := pcre_study(self.Regex, 0, @Error);
+
+    if Error <> Nil then
+    begin
+      writeln('ERROR:  UTF8 Regex study failed: ', AnsiString(Error));
+    end;
+  end;
+end;
+
+function TEncoderAuto.GetName(): AnsiString;
+begin
+  Result := 'Auto';
+end;
+
+function TEncoderAuto.Decode(const InStr: AnsiString; out OutStr: UCS4String): boolean;
+var
+  RegexResults: Integer;
+begin
+  if (self.Regex <> Nil) then
+  begin
+    RegexResults := pcre_exec(Regex, RegexExtra, PChar(InStr), Length(InStr), 0, 0, Nil, 0);
+
+    if RegexResults >= 0 then
+    begin
+      Result := UTF8Encoder.Decode(InStr, OutStr);
+      Exit;
+    end;
+  end;
+
+  Result := FallbackEncoder.Decode(InStr, OutStr);
+end;
+
+function TEncoderAuto.Encode(const InStr: UCS4String; out OutStr: AnsiString): boolean;
+begin
+  Result := UTF8Encoder.Encode(InStr, OutStr);
+end;
diff --git a/src/lib/pcre/pcre.pas b/src/lib/pcre/pcre.pas
new file mode 100644
index 00000000..d3fa2f28
--- /dev/null
+++ b/src/lib/pcre/pcre.pas
@@ -0,0 +1,844 @@
+{**************************************************************************************************}
+{                                                                                                  }
+{ Project JEDI Code Library (JCL)                                                                  }
+{                                                                                                  }
+{ The contents of this file are subject to the Mozilla Public License Version 1.1 (the "License"); }
+{ you may not use this file except in compliance with the License. You may obtain a copy of the    }
+{ License at http://www.mozilla.org/MPL/                                                           }
+{                                                                                                  }
+{ Software distributed under the License is distributed on an "AS IS" basis, WITHOUT WARRANTY OF   }
+{ ANY KIND, either express or implied. See the License for the specific language governing rights  }
+{ and limitations under the License.                                                               }
+{                                                                                                  }
+{ The Original Code is JclPRCE.pas.                                                                }
+{                                                                                                  }
+{ The Initial Developer of the Original Code is Peter Thornqvist.                                  }
+{ Portions created by Peter Thornqvist are Copyright (C) of Peter Thornqvist. All rights reserved. }
+{ Portions created by University of Cambridge are                                                  }
+{ Copyright (C) 1997-2001 by University of Cambridge.                                              }
+{                                                                                                  }
+{ Contributor(s):                                                                                  }
+{   Robert Rossmair (rrossmair)                                                                    }
+{   Mario R. Carro                                                                                 }
+{   Florent Ouchet (outchy)                                                                        }
+{                                                                                                  }
+{ The latest release of PCRE is always available from                                              }
+{ ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre/pcre-xxx.tar.gz                            }
+{                                                                                                  }
+{**************************************************************************************************}
+{                                                                                                  }
+{ Header conversion of pcre.h                                                                      }
+{                                                                                                  }
+{                                                                                                  }
+{**************************************************************************************************}
+{                                                                                                  }
+{ Last modified: $Date::                                                                         $ }
+{ Revision:      $Rev::                                                                          $ }
+{ Author:        $Author::                                                                       $ }
+{                                                                                                  }
+{**************************************************************************************************}
+
+unit pcre;
+
+interface
+
+(*************************************************
+*       Perl-Compatible Regular Expressions      *
+*************************************************)
+
+{$IFDEF FPC}
+  {$MODE DELPHI}
+  {$PACKENUM 4}    (* use 4-byte enums *)
+  {$PACKRECORDS C} (* C/C++-compatible record packing *)
+{$ELSE}
+  {$MINENUMSIZE 4} (* use 4-byte enums *)
+{$ENDIF}
+
+{$WEAKPACKAGEUNIT ON}
+
+// (p3) this is the switch to change between static and dynamic linking.
+// It is set to dynamic by default. To disable simply insert a '.' before the '$'
+//
+// NOTE: if you enable static linking of DLL, this means that the pcre.dll *must*
+// be in the users path or an AV will occur at startup
+
+(*$HPPEMIT '#include "pcre.h"'*)
+
+const
+  MAX_PATTERN_LENGTH = $10003;
+  {$EXTERNALSYM MAX_PATTERN_LENGTH}
+  MAX_QUANTIFY_REPEAT = $10000;
+  {$EXTERNALSYM MAX_QUANTIFY_REPEAT}
+  MAX_CAPTURE_COUNT = $FFFF;
+  {$EXTERNALSYM MAX_CAPTURE_COUNT}
+  MAX_NESTING_DEPTH = 200;
+  {$EXTERNALSYM MAX_NESTING_DEPTH}
+
+const
+  (* Options *)
+  PCRE_CASELESS = $00000001;
+  {$EXTERNALSYM PCRE_CASELESS}
+  PCRE_MULTILINE = $00000002;
+  {$EXTERNALSYM PCRE_MULTILINE}
+  PCRE_DOTALL = $00000004;
+  {$EXTERNALSYM PCRE_DOTALL}
+  PCRE_EXTENDED = $00000008;
+  {$EXTERNALSYM PCRE_EXTENDED}
+  PCRE_ANCHORED = $00000010;
+  {$EXTERNALSYM PCRE_ANCHORED}
+  PCRE_DOLLAR_ENDONLY = $00000020;
+  {$EXTERNALSYM PCRE_DOLLAR_ENDONLY}
+  PCRE_EXTRA = $00000040;
+  {$EXTERNALSYM PCRE_EXTRA}
+  PCRE_NOTBOL = $00000080;
+  {$EXTERNALSYM PCRE_NOTBOL}
+  PCRE_NOTEOL = $00000100;
+  {$EXTERNALSYM PCRE_NOTEOL}
+  PCRE_UNGREEDY = $00000200;
+  {$EXTERNALSYM PCRE_UNGREEDY}
+  PCRE_NOTEMPTY = $00000400;
+  {$EXTERNALSYM PCRE_NOTEMPTY}
+  PCRE_UTF8 = $00000800;
+  {$EXTERNALSYM PCRE_UTF8}
+  PCRE_NO_AUTO_CAPTURE = $00001000;
+  {$EXTERNALSYM PCRE_NO_AUTO_CAPTURE}
+  PCRE_NO_UTF8_CHECK = $00002000;
+  {$EXTERNALSYM PCRE_NO_UTF8_CHECK}
+  PCRE_AUTO_CALLOUT = $00004000;
+  {$EXTERNALSYM PCRE_AUTO_CALLOUT}
+  PCRE_PARTIAL_SOFT = $00008000;
+  {$EXTERNALSYM PCRE_PARTIAL_SOFT}
+  PCRE_PARTIAL = PCRE_PARTIAL_SOFT; // Backwards compatible synonym
+  {$EXTERNALSYM PCRE_PARTIAL}
+  PCRE_DFA_SHORTEST = $00010000;
+  {$EXTERNALSYM PCRE_DFA_SHORTEST}
+  PCRE_DFA_RESTART = $00020000;
+  {$EXTERNALSYM PCRE_DFA_RESTART}
+  PCRE_FIRSTLINE = $00040000;
+  {$EXTERNALSYM PCRE_FIRSTLINE}
+  PCRE_DUPNAMES = $00080000;
+  {$EXTERNALSYM PCRE_DUPNAMES}
+  PCRE_NEWLINE_CR = $00100000;
+  {$EXTERNALSYM PCRE_NEWLINE_CR}
+  PCRE_NEWLINE_LF = $00200000;
+  {$EXTERNALSYM PCRE_NEWLINE_LF}
+  PCRE_NEWLINE_CRLF = $00300000;
+  {$EXTERNALSYM PCRE_NEWLINE_CRLF}
+  PCRE_NEWLINE_ANY = $00400000;
+  {$EXTERNALSYM PCRE_NEWLINE_ANY}
+  PCRE_NEWLINE_ANYCRLF = $00500000;
+  {$EXTERNALSYM PCRE_NEWLINE_ANYCRLF}
+  PCRE_BSR_ANYCRLF = $00800000;
+  {$EXTERNALSYM PCRE_BSR_ANYCRLF}
+  PCRE_BSR_UNICODE = $01000000;
+  {$EXTERNALSYM PCRE_BSR_UNICODE}
+  PCRE_JAVASCRIPT_COMPAT = $02000000;
+  {$EXTERNALSYM PCRE_JAVASCRIPT_COMPAT}
+  PCRE_NO_START_OPTIMIZE = $04000000;
+  {$EXTERNALSYM PCRE_NO_START_OPTIMIZE}
+  PCRE_NO_START_OPTIMISE = $04000000;
+  {$EXTERNALSYM PCRE_NO_START_OPTIMISE}
+  PCRE_PARTIAL_HARD = $08000000;
+  {$EXTERNALSYM PCRE_PARTIAL_HARD}
+  PCRE_NOTEMPTY_ATSTART = $10000000;
+  {$EXTERNALSYM PCRE_NOTEMPTY_ATSTART}
+
+  (* Exec-time and get-time error codes *)
+
+  PCRE_ERROR_NOMATCH = -1;
+  {$EXTERNALSYM PCRE_ERROR_NOMATCH}
+  PCRE_ERROR_NULL = -2;
+  {$EXTERNALSYM PCRE_ERROR_NULL}
+  PCRE_ERROR_BADOPTION = -3;
+  {$EXTERNALSYM PCRE_ERROR_BADOPTION}
+  PCRE_ERROR_BADMAGIC = -4;
+  {$EXTERNALSYM PCRE_ERROR_BADMAGIC}
+  PCRE_ERROR_UNKNOWN_NODE = -5;
+  {$EXTERNALSYM PCRE_ERROR_UNKNOWN_NODE}
+  PCRE_ERROR_NOMEMORY = -6;
+  {$EXTERNALSYM PCRE_ERROR_NOMEMORY}
+  PCRE_ERROR_NOSUBSTRING = -7;
+  {$EXTERNALSYM PCRE_ERROR_NOSUBSTRING}
+  PCRE_ERROR_MATCHLIMIT = -8;
+  {$EXTERNALSYM PCRE_ERROR_MATCHLIMIT}
+  PCRE_ERROR_CALLOUT = -9;  (* Never used by PCRE itself *)
+  {$EXTERNALSYM PCRE_ERROR_CALLOUT}
+  PCRE_ERROR_BADUTF8 = -10;
+  {$EXTERNALSYM PCRE_ERROR_BADUTF8}
+  PCRE_ERROR_BADUTF8_OFFSET = -11;
+  {$EXTERNALSYM PCRE_ERROR_BADUTF8_OFFSET}
+  PCRE_ERROR_PARTIAL = -12;
+  {$EXTERNALSYM PCRE_ERROR_PARTIAL}
+  PCRE_ERROR_BADPARTIAL = -13;
+  {$EXTERNALSYM PCRE_ERROR_BADPARTIAL}
+  PCRE_ERROR_INTERNAL = -14;
+  {$EXTERNALSYM PCRE_ERROR_INTERNAL}
+  PCRE_ERROR_BADCOUNT = -15;
+  {$EXTERNALSYM PCRE_ERROR_BADCOUNT}
+  PCRE_ERROR_DFA_UITEM = -16;
+  {$EXTERNALSYM PCRE_ERROR_DFA_UITEM}
+  PCRE_ERROR_DFA_UCOND = -17;
+  {$EXTERNALSYM PCRE_ERROR_DFA_UCOND}
+  PCRE_ERROR_DFA_UMLIMIT = -18;
+  {$EXTERNALSYM PCRE_ERROR_DFA_UMLIMIT}
+  PCRE_ERROR_DFA_WSSIZE = -19;
+  {$EXTERNALSYM PCRE_ERROR_DFA_WSSIZE}
+  PCRE_ERROR_DFA_RECURSE = -20;
+  {$EXTERNALSYM PCRE_ERROR_DFA_RECURSE}
+  PCRE_ERROR_RECURSIONLIMIT = -21;
+  {$EXTERNALSYM PCRE_ERROR_RECURSIONLIMIT}
+  PCRE_ERROR_NULLWSLIMIT = -22;  (* No longer actually used *)
+  {$EXTERNALSYM PCRE_ERROR_NULLWSLIMIT}
+  PCRE_ERROR_BADNEWLINE = -23;
+  {$EXTERNALSYM PCRE_ERROR_BADNEWLINE}
+
+  (* Request types for pcre_fullinfo() *)
+
+  PCRE_INFO_OPTIONS = 0;
+  {$EXTERNALSYM PCRE_INFO_OPTIONS}
+  PCRE_INFO_SIZE = 1;
+  {$EXTERNALSYM PCRE_INFO_SIZE}
+  PCRE_INFO_CAPTURECOUNT = 2;
+  {$EXTERNALSYM PCRE_INFO_CAPTURECOUNT}
+  PCRE_INFO_BACKREFMAX = 3;
+  {$EXTERNALSYM PCRE_INFO_BACKREFMAX}
+  PCRE_INFO_FIRSTCHAR = 4;
+  {$EXTERNALSYM PCRE_INFO_FIRSTCHAR}
+  PCRE_INFO_FIRSTTABLE = 5;
+  {$EXTERNALSYM PCRE_INFO_FIRSTTABLE}
+  PCRE_INFO_LASTLITERAL = 6;
+  {$EXTERNALSYM PCRE_INFO_LASTLITERAL}
+  PCRE_INFO_NAMEENTRYSIZE = 7;
+  {$EXTERNALSYM PCRE_INFO_NAMEENTRYSIZE}
+  PCRE_INFO_NAMECOUNT = 8;
+  {$EXTERNALSYM PCRE_INFO_NAMECOUNT}
+  PCRE_INFO_NAMETABLE = 9;
+  {$EXTERNALSYM PCRE_INFO_NAMETABLE}
+  PCRE_INFO_STUDYSIZE = 10;
+  {$EXTERNALSYM PCRE_INFO_STUDYSIZE}
+  PCRE_INFO_DEFAULT_TABLES = 11;
+  {$EXTERNALSYM PCRE_INFO_DEFAULT_TABLES}
+  PCRE_INFO_OKPARTIAL = 12;
+  {$EXTERNALSYM PCRE_INFO_OKPARTIAL}
+  PCRE_INFO_JCHANGED = 13;
+  {$EXTERNALSYM PCRE_INFO_JCHANGED}
+  PCRE_INFO_HASCRORLF = 14;
+  {$EXTERNALSYM PCRE_INFO_HASCRORLF}
+  PCRE_INFO_MINLENGTH = 15;
+  {$EXTERNALSYM PCRE_INFO_MINLENGTH}
+
+  (* Request types for pcre_config() *)
+  PCRE_CONFIG_UTF8 = 0;
+  {$EXTERNALSYM PCRE_CONFIG_UTF8}
+  PCRE_CONFIG_NEWLINE = 1;
+  {$EXTERNALSYM PCRE_CONFIG_NEWLINE}
+  PCRE_CONFIG_LINK_SIZE = 2;
+  {$EXTERNALSYM PCRE_CONFIG_LINK_SIZE}
+  PCRE_CONFIG_POSIX_MALLOC_THRESHOLD = 3;
+  {$EXTERNALSYM PCRE_CONFIG_POSIX_MALLOC_THRESHOLD}
+  PCRE_CONFIG_MATCH_LIMIT = 4;
+  {$EXTERNALSYM PCRE_CONFIG_MATCH_LIMIT}
+  PCRE_CONFIG_STACKRECURSE = 5;
+  {$EXTERNALSYM PCRE_CONFIG_STACKRECURSE}
+  PCRE_CONFIG_UNICODE_PROPERTIES = 6;
+  {$EXTERNALSYM PCRE_CONFIG_UNICODE_PROPERTIES}
+  PCRE_CONFIG_MATCH_LIMIT_RECURSION = 7;
+  {$EXTERNALSYM PCRE_CONFIG_MATCH_LIMIT_RECURSION}
+  PCRE_CONFIG_BSR = 8;
+  {$EXTERNALSYM PCRE_CONFIG_BSR}
+
+  (* Bit flags for the pcre_extra structure *)
+
+  PCRE_EXTRA_STUDY_DATA = $0001;
+  {$EXTERNALSYM PCRE_EXTRA_STUDY_DATA}
+  PCRE_EXTRA_MATCH_LIMIT = $0002;
+  {$EXTERNALSYM PCRE_EXTRA_MATCH_LIMIT}
+  PCRE_EXTRA_CALLOUT_DATA = $0004;
+  {$EXTERNALSYM PCRE_EXTRA_CALLOUT_DATA}
+  PCRE_EXTRA_TABLES = $0008;
+  {$EXTERNALSYM PCRE_EXTRA_TABLES}
+  PCRE_EXTRA_MATCH_LIMIT_RECURSION = $0010;
+  {$EXTERNALSYM PCRE_EXTRA_MATCH_LIMIT_RECURSION}
+
+type
+  real_pcre = packed record
+    {magic_number: Longword;
+    size: Integer;
+    tables: PAnsiChar;
+    options: Longword;
+    top_bracket: Word;
+    top_backref: word;
+    first_char: PAnsiChar;
+    req_char: PAnsiChar;
+    code: array [0..0] of AnsiChar;}
+  end;
+  TPCRE = real_pcre;
+  PPCRE = ^TPCRE;
+
+  real_pcre_extra = packed record
+    {options: PAnsiChar;
+    start_bits: array [0..31] of AnsiChar;}
+    flags: Cardinal;        (* Bits for which fields are set *)
+    study_data: Pointer;    (* Opaque data from pcre_study() *)
+    match_limit: Cardinal;  (* Maximum number of calls to match() *)
+    callout_data: Pointer;  (* Data passed back in callouts *)
+    tables: PAnsiChar;      (* Pointer to character tables *)
+    match_limit_recursion: Cardinal; (* Max recursive calls to match() *)
+  end;
+  TPCREExtra = real_pcre_extra;
+  PPCREExtra = ^TPCREExtra;
+
+  pcre_callout_block = packed record
+    version: Integer;           (* Identifies version of block *)
+  (* ------------------------ Version 0 ------------------------------- *)
+    callout_number: Integer;    (* Number compiled into pattern *)
+    offset_vector: PInteger;    (* The offset vector *)
+    subject: PAnsiChar;         (* The subject being matched *)
+    subject_length: Integer;    (* The length of the subject *)
+    start_match: Integer;       (* Offset to start of this match attempt *)
+    current_position: Integer;  (* Where we currently are in the subject *)
+    capture_top: Integer;       (* Max current capture *)
+    capture_last: Integer;      (* Most recently closed capture *)
+    callout_data: Pointer;      (* Data passed in with the call *)
+  (* ------------------- Added for Version 1 -------------------------- *)
+    pattern_position: Integer;  (* Offset to next item in the pattern *)
+    next_item_length: Integer;  (* Length of next item in the pattern *)
+  (* ------------------------------------------------------------------ *)
+  end;
+
+  pcre_malloc_callback = function(Size: SizeInt): Pointer; cdecl;
+  {$EXTERNALSYM pcre_malloc_callback}
+  pcre_free_callback = procedure(P: Pointer); cdecl;
+  {$EXTERNALSYM pcre_free_callback}
+  pcre_stack_malloc_callback = function(Size: SizeInt): Pointer; cdecl;
+  {$EXTERNALSYM pcre_stack_malloc_callback}
+  pcre_stack_free_callback = procedure(P: Pointer); cdecl;
+  {$EXTERNALSYM pcre_stack_free_callback}
+  pcre_callout_callback = function(var callout_block: pcre_callout_block): Integer; cdecl;
+  {$EXTERNALSYM pcre_callout_callback}
+
+var
+  // renamed from "pcre_X" to "pcre_X_func" to allow functions with name "pcre_X" to be
+  // declared in implementation when static linked
+  pcre_malloc_func: ^pcre_malloc_callback = nil;
+  {$EXTERNALSYM pcre_malloc_func}
+  pcre_free_func: ^pcre_free_callback = nil;
+  {$EXTERNALSYM pcre_free_func}
+  pcre_stack_malloc_func: ^pcre_stack_malloc_callback = nil;
+  {$EXTERNALSYM pcre_stack_malloc_func}
+  pcre_stack_free_func: ^pcre_stack_free_callback = nil;
+  {$EXTERNALSYM pcre_stack_free_func}
+  pcre_callout_func: ^pcre_callout_callback = nil;
+  {$EXTERNALSYM pcre_callout_func}
+
+procedure SetPCREMallocCallback(const Value: pcre_malloc_callback);
+{$EXTERNALSYM SetPCREMallocCallback}
+function GetPCREMallocCallback: pcre_malloc_callback;
+{$EXTERNALSYM GetPCREMallocCallback}
+function CallPCREMalloc(Size: SizeInt): Pointer;
+{$EXTERNALSYM CallPCREMalloc}
+
+procedure SetPCREFreeCallback(const Value: pcre_free_callback);
+{$EXTERNALSYM SetPCREFreeCallback}
+function GetPCREFreeCallback: pcre_free_callback;
+{$EXTERNALSYM GetPCREFreeCallback}
+procedure CallPCREFree(P: Pointer);
+{$EXTERNALSYM CallPCREFree}
+
+procedure SetPCREStackMallocCallback(const Value: pcre_stack_malloc_callback);
+{$EXTERNALSYM SetPCREStackMallocCallback}
+function GetPCREStackMallocCallback: pcre_stack_malloc_callback;
+{$EXTERNALSYM GetPCREStackMallocCallback}
+function CallPCREStackMalloc(Size: SizeInt): Pointer;
+{$EXTERNALSYM CallPCREStackMalloc}
+
+procedure SetPCREStackFreeCallback(const Value: pcre_stack_free_callback);
+{$EXTERNALSYM SetPCREStackFreeCallback}
+function GetPCREStackFreeCallback: pcre_stack_free_callback;
+{$EXTERNALSYM GetPCREStackFreeCallback}
+procedure CallPCREStackFree(P: Pointer);
+{$EXTERNALSYM CallPCREStackFree}
+
+procedure SetPCRECalloutCallback(const Value: pcre_callout_callback);
+{$EXTERNALSYM SetPCRECalloutCallback}
+function GetPCRECalloutCallback: pcre_callout_callback;
+{$EXTERNALSYM GetPCRECalloutCallback}
+function CallPCRECallout(var callout_block: pcre_callout_block): Integer;
+{$EXTERNALSYM CallPCRECallout}
+
+type
+  TPCRELibNotLoadedHandler = procedure; cdecl;
+
+  PPPAnsiChar = ^PPAnsiChar;
+
+var
+  // Value to initialize function pointers below with, in case LoadPCRE fails
+  // or UnloadPCRE is called.  Typically the handler will raise an exception.
+  LibNotLoadedHandler: TPCRELibNotLoadedHandler = nil;
+
+(* Functions *)
+
+// dynamic dll import
+type
+  pcre_compile_func = function(const pattern: PAnsiChar; options: Integer;
+    const errptr: PPAnsiChar; erroffset: PInteger; const tableptr: PAnsiChar): PPCRE;
+    cdecl;
+  {$EXTERNALSYM pcre_compile_func}
+  pcre_compile2_func = function(const pattern: PAnsiChar; options: Integer;
+    const errorcodeptr: PInteger; const errorptr: PPAnsiChar; erroroffset: PInteger;
+    const tables: PAnsiChar): PPCRE; cdecl;
+  {$EXTERNALSYM pcre_compile2_func}
+  pcre_config_func = function(what: Integer; where: Pointer): Integer;
+  cdecl;
+  {$EXTERNALSYM pcre_config_func}
+  pcre_copy_named_substring_func = function(const code: PPCRE; const subject: PAnsiChar;
+    ovector: PInteger; stringcount: Integer; const stringname: PAnsiChar;
+    buffer: PAnsiChar; size: Integer): Integer; cdecl;
+  {$EXTERNALSYM pcre_copy_named_substring_func}
+  pcre_copy_substring_func = function(const subject: PAnsiChar; ovector: PInteger;
+    stringcount, stringnumber: Integer; buffer: PAnsiChar; buffersize: Integer): Integer;
+    cdecl;
+  {$EXTERNALSYM pcre_copy_substring_func}
+  pcre_dfa_exec_func = function(const argument_re: PPCRE; const extra_data: PPCREExtra;
+    const subject: PAnsiChar; length: Integer; start_offset: Integer;
+    options: Integer; offsets: PInteger; offsetcount: Integer; workspace: PInteger;
+    wscount: Integer): Integer; cdecl;
+  {$EXTERNALSYM pcre_dfa_exec_func}
+  pcre_exec_func = function(const code: PPCRE; const extra: PPCREExtra; const subject: PAnsiChar;
+    length, startoffset, options: Integer; ovector: PInteger; ovecsize: Integer): Integer;
+    cdecl;
+  {$EXTERNALSYM pcre_exec_func}
+  pcre_free_substring_func = procedure(stringptr: PAnsiChar);
+    cdecl;
+  {$EXTERNALSYM pcre_free_substring_func}
+  pcre_free_substring_list_func = procedure(stringptr: PPAnsiChar);
+    cdecl;
+  {$EXTERNALSYM pcre_free_substring_list_func}
+  pcre_fullinfo_func = function(const code: PPCRE; const extra: PPCREExtra;
+    what: Integer; where: Pointer): Integer;
+    cdecl;
+  {$EXTERNALSYM pcre_fullinfo_func}
+  pcre_get_named_substring_func = function(const code: PPCRE; const subject: PAnsiChar;
+    ovector: PInteger; stringcount: Integer; const stringname: PAnsiChar;
+    const stringptr: PPAnsiChar): Integer; cdecl;
+  {$EXTERNALSYM pcre_get_named_substring_func}
+  pcre_get_stringnumber_func = function(const code: PPCRE;
+    const stringname: PAnsiChar): Integer; cdecl;
+  {$EXTERNALSYM pcre_get_stringnumber_func}
+  pcre_get_stringtable_entries_func = function(const code: PPCRE; const stringname: PAnsiChar;
+    firstptr: PPAnsiChar; lastptr: PPAnsiChar): Integer;
+    cdecl;
+  {$EXTERNALSYM pcre_get_stringtable_entries_func}
+  pcre_get_substring_func = function(const subject: PAnsiChar; ovector: PInteger;
+    stringcount, stringnumber: Integer; const stringptr: PPAnsiChar): Integer;
+    cdecl;
+  {$EXTERNALSYM pcre_get_substring_func}
+  pcre_get_substring_list_func = function(const subject: PAnsiChar; ovector: PInteger;
+    stringcount: Integer; listptr: PPPAnsiChar): Integer;
+    cdecl;
+  {$EXTERNALSYM pcre_get_substring_list_func}
+  pcre_info_func = function(const code: PPCRE; optptr, firstcharptr: PInteger): Integer;
+  cdecl;
+  {$EXTERNALSYM pcre_info_func}
+  pcre_maketables_func = function: PAnsiChar; cdecl;
+  {$EXTERNALSYM pcre_maketables_func}
+  pcre_refcount_func = function(argument_re: PPCRE; adjust: Integer): Integer;
+  cdecl;
+  {$EXTERNALSYM pcre_refcount_func}
+  pcre_study_func = function(const code: PPCRE; options: Integer; const errptr: PPAnsiChar): PPCREExtra;
+  cdecl;
+  {$EXTERNALSYM pcre_study_func}
+  pcre_version_func = function: PAnsiChar; cdecl;
+  {$EXTERNALSYM pcre_version_func}
+
+var
+  pcre_compile: pcre_compile_func = nil;
+  {$EXTERNALSYM pcre_compile}
+  pcre_compile2: pcre_compile2_func = nil;
+  {$EXTERNALSYM pcre_compile2}
+  pcre_config: pcre_config_func = nil;
+  {$EXTERNALSYM pcre_config}
+  pcre_copy_named_substring: pcre_copy_named_substring_func = nil;
+  {$EXTERNALSYM pcre_copy_named_substring}
+  pcre_copy_substring: pcre_copy_substring_func = nil;
+  {$EXTERNALSYM pcre_copy_substring}
+  pcre_dfa_exec: pcre_dfa_exec_func = nil;
+  {$EXTERNALSYM pcre_dfa_exec}
+  pcre_exec: pcre_exec_func = nil;
+  {$EXTERNALSYM pcre_exec}
+  pcre_free_substring: pcre_free_substring_func = nil;
+  {$EXTERNALSYM pcre_free_substring}
+  pcre_free_substring_list: pcre_free_substring_list_func = nil;
+  {$EXTERNALSYM pcre_free_substring_list}
+  pcre_fullinfo: pcre_fullinfo_func = nil;
+  {$EXTERNALSYM pcre_fullinfo}
+  pcre_get_named_substring: pcre_get_named_substring_func = nil;
+  {$EXTERNALSYM pcre_get_named_substring}
+  pcre_get_stringnumber: pcre_get_stringnumber_func = nil;
+  {$EXTERNALSYM pcre_get_stringnumber}
+  pcre_get_stringtable_entries: pcre_get_stringtable_entries_func = nil;
+  {$EXTERNALSYM pcre_get_stringtable_entries}
+  pcre_get_substring: pcre_get_substring_func = nil;
+  {$EXTERNALSYM pcre_get_substring}
+  pcre_get_substring_list: pcre_get_substring_list_func = nil;
+  {$EXTERNALSYM pcre_get_substring_list}
+  pcre_info: pcre_info_func = nil;
+  {$EXTERNALSYM pcre_info}
+  pcre_maketables: pcre_maketables_func = nil;
+  {$EXTERNALSYM pcre_maketables}
+  pcre_refcount: pcre_refcount_func = nil;
+  {$EXTERNALSYM pcre_refcount}
+  pcre_study: pcre_study_func = nil;
+  {$EXTERNALSYM pcre_study}
+  pcre_version: pcre_version_func = nil;
+  {$EXTERNALSYM pcre_version}
+
+function IsPCRELoaded: Boolean;
+function LoadPCRE: Boolean;
+procedure UnloadPCRE;
+
+implementation
+
+uses
+  SysUtils,
+  {$IFDEF MSWINDOWS}
+  Windows;
+  {$ENDIF MSWINDOWS}
+  {$IFDEF UNIX}
+  {$IFDEF HAS_UNIT_TYPES}
+  Types,
+  {$ENDIF HAS_UNIT_TYPES}
+  {$IFDEF HAS_UNIT_LIBC}
+  Libc;
+  {$ELSE ~HAS_UNIT_LIBC}
+  dl;
+  {$ENDIF ~HAS_UNIT_LIBC}
+  {$ENDIF UNIX}
+
+type
+  {$IFDEF MSWINDOWS}
+  TModuleHandle = HINST;
+  {$ENDIF MSWINDOWS}
+  {$IFDEF LINUX}
+  TModuleHandle = Pointer;
+  {$ENDIF LINUX}
+
+const
+  {$IFDEF MSWINDOWS}
+  libpcremodulename = 'pcre3.dll';
+  {$ENDIF MSWINDOWS}
+  {$IFDEF UNIX}
+  libpcremodulename = 'libpcre.so.0';
+  {$ENDIF UNIX}
+  PCRECompileExportName = 'pcre_compile';
+  PCRECompile2ExportName = 'pcre_compile2';
+  PCREConfigExportName = 'pcre_config';
+  PCRECopyNamedSubstringExportName = 'pcre_copy_named_substring';
+  PCRECopySubStringExportName = 'pcre_copy_substring';
+  PCREDfaExecExportName = 'pcre_dfa_exec';
+  PCREExecExportName = 'pcre_exec';
+  PCREFreeSubStringExportName = 'pcre_free_substring';
+  PCREFreeSubStringListExportName = 'pcre_free_substring_list';
+  PCREFullInfoExportName = 'pcre_fullinfo';
+  PCREGetNamedSubstringExportName = 'pcre_get_named_substring';
+  PCREGetStringNumberExportName = 'pcre_get_stringnumber';
+  PCREGetStringTableEntriesExportName = 'pcre_get_stringtable_entries';
+  PCREGetSubStringExportName = 'pcre_get_substring';
+  PCREGetSubStringListExportName = 'pcre_get_substring_list';
+  PCREInfoExportName = 'pcre_info';
+  PCREMakeTablesExportName = 'pcre_maketables';
+  PCRERefCountExportName = 'pcre_refcount';
+  PCREStudyExportName = 'pcre_study';
+  PCREVersionExportName = 'pcre_version';
+  PCREMallocExportName = 'pcre_malloc';
+  PCREFreeExportName = 'pcre_free';
+  PCREStackMallocExportName = 'pcre_stack_malloc';
+  PCREStackFreeExportName = 'pcre_stack_free';
+  PCRECalloutExportName = 'pcre_callout';
+  INVALID_MODULEHANDLE_VALUE = TModuleHandle(0);
+
+var
+  PCRELib: TModuleHandle = INVALID_MODULEHANDLE_VALUE;
+
+procedure SetPCREMallocCallback(const Value: pcre_malloc_callback);
+begin
+  if not Assigned(pcre_malloc_func) then
+    LoadPCRE;
+
+  if Assigned(pcre_malloc_func) then
+    pcre_malloc_func^ := Value
+  else if Assigned(LibNotLoadedHandler) then
+    LibNotLoadedHandler;
+end;
+
+function GetPCREMallocCallback: pcre_malloc_callback;
+begin
+  if not Assigned(pcre_malloc_func) then
+    LoadPCRE;
+
+  if not Assigned(pcre_malloc_func) then
+  begin
+    Result := nil;
+    if Assigned(LibNotLoadedHandler) then
+      LibNotLoadedHandler;
+  end
+  else
+    Result := pcre_malloc_func^;
+end;
+
+function CallPCREMalloc(Size: SizeInt): Pointer;
+begin
+  Result := pcre_malloc_func^(Size);
+end;
+
+procedure SetPCREFreeCallback(const Value: pcre_free_callback);
+begin
+  if not Assigned(pcre_free_func) then
+    LoadPCRE;
+
+  if Assigned(pcre_free_func) then
+    pcre_free_func^ := Value
+  else if Assigned(LibNotLoadedHandler) then
+    LibNotLoadedHandler;
+end;
+
+function GetPCREFreeCallback: pcre_free_callback;
+begin
+  if not Assigned(pcre_free_func) then
+    LoadPCRE;
+
+  if not Assigned(pcre_free_func) then
+  begin
+    Result := nil;
+    if Assigned(LibNotLoadedHandler) then
+      LibNotLoadedHandler;
+  end
+  else
+    Result := pcre_free_func^
+end;
+
+procedure CallPCREFree(P: Pointer);
+begin
+  pcre_free_func^(P);
+end;
+
+procedure SetPCREStackMallocCallback(const Value: pcre_stack_malloc_callback);
+begin
+  if not Assigned(pcre_stack_malloc_func) then
+    LoadPCRE;
+
+  if Assigned(pcre_stack_malloc_func) then
+    pcre_stack_malloc_func^ := Value
+  else if Assigned(LibNotLoadedHandler) then
+    LibNotLoadedHandler;
+end;
+
+function GetPCREStackMallocCallback: pcre_stack_malloc_callback;
+begin
+  if not Assigned(pcre_stack_malloc_func) then
+    LoadPCRE;
+
+  if not Assigned(pcre_stack_malloc_func) then
+  begin
+    Result := nil;
+    if Assigned(LibNotLoadedHandler) then
+      LibNotLoadedHandler;
+  end
+  else
+    Result := pcre_stack_malloc_func^;
+end;
+
+function CallPCREStackMalloc(Size: SizeInt): Pointer;
+begin
+  Result := pcre_stack_malloc_func^(Size);
+end;
+
+procedure SetPCREStackFreeCallback(const Value: pcre_stack_free_callback);
+begin
+  if not Assigned(pcre_stack_free_func) then
+    LoadPCRE;
+
+  if Assigned(pcre_stack_free_func) then
+    pcre_stack_free_func^ := Value
+  else if Assigned(LibNotLoadedHandler) then
+    LibNotLoadedHandler;
+end;
+
+function GetPCREStackFreeCallback: pcre_stack_free_callback;
+begin
+  if not Assigned(pcre_stack_free_func) then
+    LoadPCRE;
+
+  if not Assigned(pcre_stack_free_func) then
+  begin
+    Result := nil;
+    if Assigned(LibNotLoadedHandler) then
+      LibNotLoadedHandler;
+  end
+  else
+    Result := pcre_stack_free_func^;
+end;
+
+procedure CallPCREStackFree(P: Pointer);
+begin
+  pcre_stack_free_func^(P);
+end;
+
+procedure SetPCRECalloutCallback(const Value: pcre_callout_callback);
+begin
+  if not Assigned(pcre_callout_func) then
+    LoadPCRE;
+
+  if Assigned(pcre_callout_func) then
+    pcre_callout_func^ := Value
+  else if Assigned(LibNotLoadedHandler) then
+    LibNotLoadedHandler;
+end;
+
+function GetPCRECalloutCallback: pcre_callout_callback;
+begin
+  if not Assigned(pcre_callout_func) then
+    LoadPCRE;
+
+  if not Assigned(pcre_callout_func) then
+  begin
+    Result := nil;
+    if Assigned(LibNotLoadedHandler) then
+      LibNotLoadedHandler;
+  end
+  else
+    Result := pcre_callout_func^;
+end;
+
+function CallPCRECallout(var callout_block: pcre_callout_block): Integer;
+begin
+  Result := pcre_callout_func^(callout_block);
+end;
+
+procedure InitPCREFuncPtrs(const Value: Pointer);
+begin
+  @pcre_compile := Value;
+  @pcre_compile2 := Value;
+  @pcre_config := Value;
+  @pcre_copy_named_substring := Value;
+  @pcre_copy_substring := Value;
+  @pcre_dfa_exec := Value;
+  @pcre_exec := Value;
+  @pcre_free_substring := Value;
+  @pcre_free_substring_list := Value;
+  @pcre_fullinfo := Value;
+  @pcre_get_named_substring := Value;
+  @pcre_get_stringnumber := Value;
+  @pcre_get_stringtable_entries := Value;
+  @pcre_get_substring := Value;
+  @pcre_get_substring_list := Value;
+  @pcre_info := Value;
+  @pcre_maketables := Value;
+  @pcre_refcount := Value;
+  @pcre_study := Value;
+  @pcre_version := Value;
+  pcre_malloc_func := nil;
+  pcre_free_func := nil;
+  pcre_stack_malloc_func := nil;
+  pcre_stack_free_func := nil;
+  pcre_callout_func := nil;
+end;
+
+function IsPCRELoaded: Boolean;
+begin
+  Result := PCRELib <> INVALID_MODULEHANDLE_VALUE;
+end;
+
+function LoadPCRE: Boolean;
+  function GetSymbol(SymbolName: PAnsiChar): Pointer;
+  begin
+    {$IFDEF MSWINDOWS}
+    Result := GetProcAddress(PCRELib, SymbolName);
+    {$ENDIF MSWINDOWS}
+    {$IFDEF UNIX}
+    Result := dlsym(PCRELib, SymbolName);
+    {$ENDIF UNIX}
+  end;
+
+begin
+  Result := PCRELib <> INVALID_MODULEHANDLE_VALUE;
+  if Result then
+    Exit;
+
+  if PCRELib = INVALID_MODULEHANDLE_VALUE then
+    {$IFDEF MSWINDOWS}
+    PCRELib := SafeLoadLibrary(libpcremodulename);
+    {$ENDIF MSWINDOWS}
+    {$IFDEF UNIX}
+    PCRELib := dlopen(PAnsiChar(libpcremodulename), RTLD_NOW);
+    {$ENDIF UNIX}
+  Result := PCRELib <> INVALID_MODULEHANDLE_VALUE;
+  if Result then
+  begin
+    @pcre_compile := GetSymbol(PCRECompileExportName);
+    @pcre_compile2 := GetSymbol(PCRECompile2ExportName);
+    @pcre_config := GetSymbol(PCREConfigExportName);
+    @pcre_copy_named_substring := GetSymbol(PCRECopyNamedSubstringExportName);
+    @pcre_copy_substring := GetSymbol(PCRECopySubStringExportName);
+    @pcre_dfa_exec := GetSymbol(PCREDfaExecExportName);
+    @pcre_exec := GetSymbol(PCREExecExportName);
+    @pcre_free_substring := GetSymbol(PCREFreeSubStringExportName);
+    @pcre_free_substring_list := GetSymbol(PCREFreeSubStringListExportName);
+    @pcre_fullinfo := GetSymbol(PCREFullInfoExportName);
+    @pcre_get_named_substring := GetSymbol(PCREGetNamedSubstringExportName);
+    @pcre_get_stringnumber := GetSymbol(PCREGetStringNumberExportName);
+    @pcre_get_stringtable_entries := GetSymbol(PCREGetStringTableEntriesExportName);
+    @pcre_get_substring := GetSymbol(PCREGetSubStringExportName);
+    @pcre_get_substring_list := GetSymbol(PCREGetSubStringListExportName);
+    @pcre_info := GetSymbol(PCREInfoExportName);
+    @pcre_maketables := GetSymbol(PCREMakeTablesExportName);
+    @pcre_refcount := GetSymbol(PCRERefCountExportName);
+    @pcre_study := GetSymbol(PCREStudyExportName);
+    @pcre_version := GetSymbol(PCREVersionExportName);
+    pcre_malloc_func := GetSymbol(PCREMallocExportName);
+    pcre_free_func := GetSymbol(PCREFreeExportName);
+    pcre_stack_malloc_func := GetSymbol(PCREStackMallocExportName);
+    pcre_stack_free_func := GetSymbol(PCREStackFreeExportName);
+    pcre_callout_func := GetSymbol(PCRECalloutExportName);
+  end
+  else
+    InitPCREFuncPtrs(@LibNotLoadedHandler);
+end;
+
+procedure UnloadPCRE;
+begin
+  if PCRELib <> INVALID_MODULEHANDLE_VALUE then
+    {$IFDEF MSWINDOWS}
+    FreeLibrary(PCRELib);
+    {$ENDIF MSWINDOWS}
+    {$IFDEF UNIX}
+    dlclose(Pointer(PCRELib));
+    {$ENDIF UNIX}
+  PCRELib := INVALID_MODULEHANDLE_VALUE;
+  InitPCREFuncPtrs(@LibNotLoadedHandler);
+end;
+
+(*
+function pcre_compile; external libpcremodulename name PCRECompileExportName;
+function pcre_compile2; external libpcremodulename name PCRECompile2ExportName;
+function pcre_config; external libpcremodulename name PCREConfigExportName;
+function pcre_copy_named_substring; external libpcremodulename name PCRECopyNamedSubStringExportName;
+function pcre_copy_substring; external libpcremodulename name PCRECopySubStringExportName;
+function pcre_dfa_exec; external libpcremodulename name PCREDfaExecExportName;
+function pcre_exec; external libpcremodulename name PCREExecExportName;
+procedure pcre_free_substring; external libpcremodulename name PCREFreeSubStringExportName;
+procedure pcre_free_substring_list; external libpcremodulename name PCREFreeSubStringListExportName;
+function pcre_fullinfo; external libpcremodulename name PCREFullInfoExportName;
+function pcre_get_named_substring; external libpcremodulename name PCREGetNamedSubStringExportName;
+function pcre_get_stringnumber; external libpcremodulename name PCREGetStringNumberExportName;
+function pcre_get_stringtable_entries; external libpcremodulename name PCREGetStringTableEntriesExportName;
+function pcre_get_substring; external libpcremodulename name PCREGetSubStringExportName;
+function pcre_get_substring_list; external libpcremodulename name PCREGetSubStringListExportName;
+function pcre_info; external libpcremodulename name PCREInfoExportName;
+function pcre_maketables; external libpcremodulename name PCREMakeTablesExportName;
+function pcre_refcount; external libpcremodulename name PCRERefCountExportName;
+function pcre_study; external libpcremodulename name PCREStudyExportName;
+function pcre_version; external libpcremodulename name PCREVersionExportName;
+*)
+
+end.
diff --git a/src/ultrastardx.dpr b/src/ultrastardx.dpr
index 0b2ff0bc..eca3ecc2 100644
--- a/src/ultrastardx.dpr
+++ b/src/ultrastardx.dpr
@@ -132,6 +132,8 @@ uses
   SQLiteTable3  in 'lib\SQLite\SQLiteTable3.pas',
   SQLite3       in 'lib\SQLite\SQLite3.pas',
 
+  pcre          in 'lib\pcre\pcre.pas',
+
   {$IFDEF MSWINDOWS}
   // TntUnicodeControls
   TntSystem         in 'lib\TntUnicodeControls\TntSystem.pas',