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{
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pcRegExp - Perl compatible regular expressions for Virtual Pascal
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(c) 2001 Peter S. Voronov aka Chem O'Dun <petervrn@yahoo.com>
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Based on PCRE library interface unit for Virtual Pascal.
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(c) 2001 Alexander Tokarev <dwalin@dwalin.ru>
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The current PCRE version is: 3.7
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This software must be distributed as Freeware.
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The PCRE library is written by: Philip Hazel <ph10@cam.ac.uk>
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Copyright (c) 1997-2004 University of Cambridge
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AngelsHolocaust 4-11-04 updated to use version v5.0
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(INFO: this is regex-directed, NFA)
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AH: 9-11-04 - pcre_free: removed var, pcre already gives the ptr, now
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everything works as it should (no more crashes)
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-> removed CheckRegExp because pcre handles errors perfectly
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10-11-04 - added pcError (errorhandling), pcInit
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13-11-04 - removed the ErrorPos = 0 check -> always print erroroffset
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17-10-05 - support for \1-\9 backreferences in TpcRegExp.GetReplStr
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17-02-06 - added RunTimeOptions: caller can set options while searching
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19-02-06 - added SearchOfs(): let PCRE use the complete string and offset
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into the string itself
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20-12-06 - support for version 7.0
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}
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{$H+} {$DEFINE PCRE_3_7} {$DEFINE PCRE_5_0} {$DEFINE PCRE_7_0}
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Unit pcregexp;
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Interface
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uses objects;
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Type
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PpcRegExp = ^TpcRegExp;
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// TpcRegExp = object
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TpcRegExp = object(TObject)
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MatchesCount: integer;
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RegExpC, RegExpExt : Pointer;
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Matches:Pointer;
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RegExp: shortstring;
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SourceLen: integer;
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PartialMatch : boolean;
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Error : boolean;
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ErrorMsg : Pchar;
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ErrorPos : integer;
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RunTimeOptions: Integer; // options which can be set by the caller
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constructor Init(const ARegExp : shortstring; AOptions : integer; ALocale : Pointer);
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function Search(AStr: Pchar; ALen : longint) : boolean; virtual;
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function SearchNext( AStr: Pchar; ALen : longint) : boolean; virtual;
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function SearchOfs ( AStr: Pchar; ALen, AOfs : longint) : boolean; virtual;
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function MatchSub(ANom: integer; var Pos, Len : longint) : boolean; virtual;
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function MatchFull(var Pos, Len : longint) : boolean; virtual;
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function GetSubStr(ANom: integer; AStr: Pchar) : string; virtual;
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function GetFullStr(AStr: Pchar) : string; virtual;
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function GetReplStr(AStr: Pchar; const ARepl: string) : string; virtual;
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function GetPreSubStr(AStr: Pchar) : string; virtual;
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function GetPostSubStr(AStr: Pchar) : string; virtual;
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function ErrorStr : string; virtual;
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destructor Done; virtual;
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end;
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function pcGrepMatch(WildCard, aStr: string; AOptions:integer; ALocale : Pointer): Boolean;
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function pcGrepSub(WildCard, aStr, aRepl: string; AOptions:integer; ALocale : Pointer): string;
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function pcFastGrepMatch(WildCard, aStr: string): Boolean;
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function pcFastGrepSub(WildCard, aStr, aRepl: string): string;
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{$IFDEF PCRE_5_0}
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function pcGetVersion : pchar;
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{$ENDIF}
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function pcError (var pRegExp : Pointer) : Boolean;
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function pcInit (const Pattern: Shortstring; CaseSens: Boolean) : Pointer;
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Const { Options }
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PCRE_CASELESS = $0001;
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PCRE_MULTILINE = $0002;
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PCRE_DOTALL = $0004;
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PCRE_EXTENDED = $0008;
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PCRE_ANCHORED = $0010;
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PCRE_DOLLAR_ENDONLY = $0020;
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PCRE_EXTRA = $0040;
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PCRE_NOTBOL = $0080;
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PCRE_NOTEOL = $0100;
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PCRE_UNGREEDY = $0200;
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PCRE_NOTEMPTY = $0400;
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{$IFDEF PCRE_5_0}
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PCRE_UTF8 = $0800;
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PCRE_NO_AUTO_CAPTURE = $1000;
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PCRE_NO_UTF8_CHECK = $2000;
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PCRE_AUTO_CALLOUT = $4000;
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PCRE_PARTIAL = $8000;
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{$ENDIF}
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{$IFDEF PCRE_7_0}
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PCRE_DFA_SHORTEST = $00010000;
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PCRE_DFA_RESTART = $00020000;
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PCRE_FIRSTLINE = $00040000;
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PCRE_DUPNAMES = $00080000;
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PCRE_NEWLINE_CR = $00100000;
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PCRE_NEWLINE_LF = $00200000;
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PCRE_NEWLINE_CRLF = $00300000;
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PCRE_NEWLINE_ANY = $00400000;
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PCRE_NEWLINE_ANYCRLF = $00500000;
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{$ENDIF}
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PCRE_COMPILE_ALLOWED_OPTIONS = PCRE_ANCHORED + PCRE_AUTO_CALLOUT + PCRE_CASELESS +
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PCRE_DOLLAR_ENDONLY + PCRE_DOTALL + PCRE_EXTENDED +
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PCRE_EXTRA + PCRE_MULTILINE + PCRE_NO_AUTO_CAPTURE +
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PCRE_UNGREEDY + PCRE_UTF8 + PCRE_NO_UTF8_CHECK
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{$IFDEF PCRE_7_0}
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+ PCRE_DUPNAMES + PCRE_FIRSTLINE + PCRE_NEWLINE_CRLF
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+ PCRE_NEWLINE_ANY + PCRE_NEWLINE_CRLF
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{$ENDIF}
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;
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PCRE_EXEC_ALLOWED_OPTIONS = PCRE_ANCHORED + PCRE_NOTBOL + PCRE_NOTEOL +
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PCRE_NOTEMPTY + PCRE_NO_UTF8_CHECK + PCRE_PARTIAL
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{$IFDEF PCRE_7_0}
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+ PCRE_NEWLINE_CRLF + PCRE_NEWLINE_ANY +PCRE_NEWLINE_ANYCRLF
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{$ENDIF}
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;
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{$IFDEF PCRE_7_0}
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PCRE_DFA_EXEC_ALLOWED_OPTIONS = PCRE_ANCHORED + PCRE_NOTBOL + PCRE_NOTEOL +
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PCRE_NOTEMPTY + PCRE_NO_UTF8_CHECK + PCRE_PARTIAL +
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PCRE_DFA_SHORTEST + PCRE_DFA_RESTART +
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PCRE_NEWLINE_CR + PCRE_NEWLINE_LF + PCRE_NEWLINE_CRLF +
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PCRE_NEWLINE_ANY + PCRE_NEWLINE_ANYCRLF
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{$ENDIF}
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{ Exec-time and get/set-time error codes }
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PCRE_ERROR_NOMATCH = -1;
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PCRE_ERROR_NULL = -2;
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PCRE_ERROR_BADOPTION = -3;
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PCRE_ERROR_BADMAGIC = -4;
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PCRE_ERROR_UNKNOWN_MODE = -5;
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PCRE_ERROR_NOMEMORY = -6;
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PCRE_ERROR_NOSUBSTRING = -7;
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{$IFDEF PCRE_5_0}
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PCRE_ERROR_MATCHLIMIT = -8;
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PCRE_ERROR_CALLOUT = -9; { Never used by PCRE itself }
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PCRE_ERROR_BADUTF8 = -10;
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PCRE_ERROR_BADUTF8_OFFSET = -11;
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PCRE_ERROR_PARTIAL = -12;
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PCRE_ERROR_BADPARTIAL = -13;
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PCRE_ERROR_INTERNAL = -14;
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PCRE_ERROR_BADCOUNT = -15;
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{$ENDIF}
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{$IFDEF PCRE_7_0}
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PCRE_ERROR_DFA_UITEM = -16;
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PCRE_ERROR_DFA_UCOND = -17;
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PCRE_ERROR_DFA_UMLIMIT = -18;
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PCRE_ERROR_DFA_WSSIZE = -19;
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PCRE_ERROR_DFA_RECURSE = -20;
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PCRE_ERROR_RECURSIONLIMIT = -21;
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PCRE_ERROR_NULLWSLIMIT = -22;
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PCRE_ERROR_BADNEWLINE = -23;
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{$ENDIF}
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{ Request types for pcre_fullinfo() }
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PCRE_INFO_OPTIONS = 0;
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PCRE_INFO_SIZE = 1;
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PCRE_INFO_CAPTURECOUNT = 2;
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PCRE_INFO_BACKREFMAX = 3;
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PCRE_INFO_FIRSTBYTE = 4;
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PCRE_INFO_FIRSTCHAR = 4; { For backwards compatibility }
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PCRE_INFO_FIRSTTABLE = 5;
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{$IFDEF PCRE_5_0}
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PCRE_INFO_LASTLITERAL = 6;
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PCRE_INFO_NAMEENTRYSIZE = 7;
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PCRE_INFO_NAMECOUNT = 8;
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PCRE_INFO_NAMETABLE = 9;
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PCRE_INFO_STUDYSIZE = 10;
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PCRE_INFO_DEFAULT_TABLES = 11;
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{$ENDIF PCRE_5_0}
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{ Request types for pcre_config() }
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{$IFDEF PCRE_5_0}
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PCRE_CONFIG_UTF8 = 0;
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PCRE_CONFIG_NEWLINE = 1;
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PCRE_CONFIG_LINK_SIZE = 2;
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PCRE_CONFIG_POSIX_MALLOC_THRESHOLD = 3;
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PCRE_CONFIG_MATCH_LIMIT = 4;
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PCRE_CONFIG_STACKRECURSE = 5;
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PCRE_CONFIG_UNICODE_PROPERTIES = 6;
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{$ENDIF PCRE_5_0}
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{$IFDEF PCRE_7_0}
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PCRE_CONFIG_MATCH_LIMIT_RECURSION = 7;
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{$ENDIF}
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{ Bit flags for the pcre_extra structure }
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{$IFDEF PCRE_5_0}
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PCRE_EXTRA_STUDY_DATA = $0001;
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PCRE_EXTRA_MATCH_LIMIT = $0002;
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PCRE_EXTRA_CALLOUT_DATA = $0004;
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PCRE_EXTRA_TABLES = $0008;
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{$ENDIF PCRE_5_0}
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{$IFDEF PCRE_7_0}
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PCRE_EXTRA_MATCH_LIMIT_RECURSION = $0010;
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{$ENDIF}
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Const
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// DefaultOptions : integer = 0;
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DefaultLocaleTable : pointer = nil;
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{$IFDEF PCRE_5_0}
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{ The structure for passing additional data to pcre_exec(). This is defined in
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such as way as to be extensible. Always add new fields at the end, in order to
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remain compatible. }
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type ppcre_extra = ^tpcre_extra;
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tpcre_extra = record
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flags : longint; { Bits for which fields are set }
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study_data : pointer; { Opaque data from pcre_study() }
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match_limit : longint; { Maximum number of calls to match() }
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callout_data : pointer; { Data passed back in callouts }
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tables : pointer; { Pointer to character tables }
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match_limit_recursion: longint; { Max recursive calls to match() }
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end;
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type ppcre_callout_block = ^pcre_callout_block;
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pcre_callout_block = record
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version,
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(* ------------------------ Version 0 ------------------------------- *)
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callout_number : integer;
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offset_vector : pointer;
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subject : pchar;
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subject_length, start_match, current_position, capture_top,
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capture_last : integer;
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callout_data : pointer;
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(* ------------------- Added for Version 1 -------------------------- *)
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pattern_position, next_item_length : integer;
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end;
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{$ENDIF PCRE_5_0}
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{$OrgName+}
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{$IFDEF VIRTUALPASCAL} {&Cdecl+} {$ENDIF VIRTUALPASCAL}
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{ local replacement of external pcre memory management functions }
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function pcre_malloc( size : integer ) : pointer;
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procedure pcre_free( {var} p : pointer );
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{$IFDEF PCRE_5_0}
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const pcre_stack_malloc: function ( size : integer ): pointer = pcre_malloc;
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pcre_stack_free: procedure ( {var} p : pointer ) = pcre_free;
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function pcre_callout(var p : ppcre_callout_block) : integer;
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{$ENDIF PCRE_5_0}
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{$IFDEF VIRTUALPASCAL} {&Cdecl-} {$ENDIF VIRTUALPASCAL}
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Implementation
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Uses strings, collect, messages, dnapp, commands, advance0, stringsx
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{$IFDEF VIRTUALPASCAL} ,vpsyslow {$ENDIF VIRTUALPASCAL};
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Const
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MAGIC_NUMBER = $50435245; { 'PCRE' }
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MAX_MATCHES = 90; { changed in 3.5 version; should be divisible by 3, was 64}
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Type
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PMatchArray = ^TMatchArray;
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TMatchArray = array[0..( MAX_MATCHES * 3 )] of integer;
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PRegExpCollection = ^TRegExpCollection;
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TRegExpCollection = object(TSortedCollection)
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MaxRegExp : integer;
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SearchRegExp : shortstring;
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CompareModeInsert : boolean;
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constructor Init(AMaxRegExp:integer);
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procedure FreeItem(P: Pointer); virtual;
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function Compare(P1, P2: Pointer): Integer; virtual;
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function Find(ARegExp:shortstring;var P: PpcRegExp):boolean; virtual;
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function CheckNew(ARegExp:shortstring):PpcRegExp;virtual;
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end;
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Var
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PRegExpCache : PRegExpCollection;
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{$IFDEF VIRTUALPASCAL} {&Cdecl+} {$ENDIF VIRTUALPASCAL}
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{ imported original pcre functions }
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function pcre_compile( const pattern : PChar; options : integer;
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var errorptr : PChar; var erroroffset : integer;
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const tables : PChar ) : pointer {pcre}; external;
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{$IFDEF PCRE_7_0}
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function pcre_compile2( const pattern : PChar; options : integer;
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var errorcodeptr : Integer;
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var errorptr : PChar; var erroroffset : integer;
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const tables : PChar ) : pointer {pcre}; external;
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{$ENDIF}
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{$IFDEF PCRE_5_0}
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function pcre_config( what : integer; where : pointer) : integer; external;
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function pcre_copy_named_substring( const code : pointer {pcre};
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const subject : pchar;
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var ovector : integer;
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stringcount : integer;
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const stringname : pchar;
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var buffer : pchar;
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size : integer) : integer; external;
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function pcre_copy_substring( const subject : pchar; var ovector : integer;
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stringcount, stringnumber : integer;
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var buffer : pchar; size : integer )
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: integer; external;
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function pcre_exec( const argument_re : pointer {pcre};
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const extra_data : pointer {pcre_extra};
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{$ELSE}
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function pcre_exec( const external_re : pointer;
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const external_extra : pointer;
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{$ENDIF}
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const subject : PChar;
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length, start_offset, options : integer;
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offsets : pointer;
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offsetcount : integer ) : integer; external;
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{$IFDEF PCRE_7_0}
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function pcre_dfa_exec( const argument_re : pointer {pcre};
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const extra_data : pointer {pcre_extra};
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const subject : pchar;
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length, start_offset, options : integer;
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offsets : pointer;
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offsetcount : integer;
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workspace : pointer;
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wscount : integer ) : integer; external;
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{$ENDIF}
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{$IFDEF PCRE_5_0}
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procedure pcre_free_substring( const p : pchar ); external;
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procedure pcre_free_substring_list( var p : pchar ); external;
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function pcre_fullinfo( const argument_re : pointer {pcre};
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const extra_data : pointer {pcre_extra};
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what : integer;
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where : pointer ) : integer; external;
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function pcre_get_named_substring( const code : pointer {pcre};
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const subject : pchar;
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var ovector : integer;
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stringcount : integer;
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const stringname : pchar;
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| 341 |
var stringptr : pchar ) : integer; external;
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| 342 |
function pcre_get_stringnumber( const code : pointer {pcre};
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const stringname : pchar ) : integer; external;
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| 344 |
function pcre_get_stringtable_entries( const code : pointer {pcre};
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const stringname : pchar;
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var firstptr,
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| 347 |
lastptr : pchar ) : integer; external;
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| 348 |
function pcre_get_substring( const subject : pchar; var ovector : integer;
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| 349 |
stringcount, stringnumber : integer;
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| 350 |
var stringptr : pchar ) : integer; external;
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| 351 |
function pcre_get_substring_list( const subject : pchar; var ovector : integer;
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stringcount : integer;
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| 353 |
listptr : pointer {const char ***listptr}) : integer; external;
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| 354 |
function pcre_info( const argument_re : pointer {pcre};
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var optptr : integer;
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| 356 |
var first_byte : integer ) : integer; external;
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| 357 |
function pcre_maketables : pchar; external;
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| 358 |
{$ENDIF}
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| 359 |
{$IFDEF PCRE_7_0}
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| 360 |
function pcre_refcount( const argument_re : pointer {pcre};
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| 361 |
adjust : integer ) : pchar; external;
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| 362 |
{$ENDIF}
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| 363 |
function pcre_study( const external_re : pointer {pcre};
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options : integer;
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| 365 |
var errorptr : PChar ) : pointer {pcre_extra}; external;
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{$IFDEF PCRE_5_0}
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function pcre_version : pchar; external;
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{$ENDIF}
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function pcre_malloc( size : integer ) : pointer;
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begin
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GetMem( result, size );
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end;
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procedure pcre_free( {var} p : pointer );
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begin
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if (p <> nil) then
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FreeMem( p, 0 );
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{@p := nil;}
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end;
|
| 381 |
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| 382 |
{$IFDEF PCRE_5_0}
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| 383 |
(* Called from PCRE as a result of the (?C) item. We print out where we are in
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| 384 |
the match. Yield zero unless more callouts than the fail count, or the callout
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| 385 |
data is not zero. *)
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| 386 |
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| 387 |
function pcre_callout;
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| 388 |
begin
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end;
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| 390 |
{$ENDIF}
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| 391 |
|
| 392 |
{$IFDEF VIRTUALPASCAL} {&Cdecl-} {$ENDIF VIRTUALPASCAL}
|
| 393 |
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| 394 |
// Always include the newest version of the library
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| 395 |
{$IFDEF PCRE_3_7} {$IFNDEF PCRE_5_0} {$IFNDEF PCRE_7_0} {$L pcre37.lib} {$ENDIF PCRE_7_0} {$ENDIF PCRE_5_0} {$ENDIF PCRE_3_7}
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| 396 |
{$IFDEF PCRE_5_0} {$IFNDEF PCRE_7_0} {$L pcre50.lib} {$ENDIF PCRE_7_0} {$ENDIF PCRE_5_0}
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{$IFDEF PCRE_7_0} {$L pcre70.lib} {$ENDIF PCRE_7_0}
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| 399 |
{TpcRegExp}
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| 400 |
|
| 401 |
constructor TpcRegExp.Init(const ARegExp:shortstring; AOptions:integer; ALocale : Pointer);
|
| 402 |
var
|
| 403 |
pRegExp : PChar;
|
| 404 |
begin
|
| 405 |
RegExp:=ARegExp;
|
| 406 |
RegExpC:=nil;
|
| 407 |
RegExpExt:=nil;
|
| 408 |
Matches:=nil;
|
| 409 |
MatchesCount:=0;
|
| 410 |
Error:=true;
|
| 411 |
ErrorMsg:=nil;
|
| 412 |
ErrorPos:=0;
|
| 413 |
RunTimeOptions := 0;
|
| 414 |
if length(RegExp) < 255 then
|
| 415 |
begin
|
| 416 |
RegExp[length(RegExp)+1]:=#0;
|
| 417 |
pRegExp:=@RegExp[1];
|
| 418 |
end
|
| 419 |
else
|
| 420 |
begin
|
| 421 |
GetMem(pRegExp,length(RegExp)+1);
|
| 422 |
pRegExp:=strpcopy(pRegExp,RegExp);
|
| 423 |
end;
|
| 424 |
RegExpC := pcre_compile( pRegExp,
|
| 425 |
AOptions and PCRE_COMPILE_ALLOWED_OPTIONS,
|
| 426 |
ErrorMsg, ErrorPos, ALocale);
|
| 427 |
if length(RegExp) = 255 then
|
| 428 |
StrDispose(pRegExp);
|
| 429 |
if RegExpC = nil then
|
| 430 |
exit;
|
| 431 |
ErrorMsg:=nil;
|
| 432 |
RegExpExt := pcre_study( RegExpC, 0, ErrorMsg );
|
| 433 |
if (RegExpExt = nil) and (ErrorMsg <> nil) then
|
| 434 |
begin
|
| 435 |
pcre_free(RegExpC);
|
| 436 |
exit;
|
| 437 |
end;
|
| 438 |
GetMem(Matches,SizeOf(TMatchArray));
|
| 439 |
Error:=false;
|
| 440 |
end;
|
| 441 |
|
| 442 |
destructor TpcRegExp.Done;
|
| 443 |
begin
|
| 444 |
if RegExpC <> nil then
|
| 445 |
pcre_free(RegExpC);
|
| 446 |
if RegExpExt <> nil then
|
| 447 |
pcre_free(RegExpExt);
|
| 448 |
if Matches <> nil then
|
| 449 |
FreeMem(Matches,SizeOf(TMatchArray));
|
| 450 |
end;
|
| 451 |
|
| 452 |
function TpcRegExp.SearchNext( AStr: Pchar; ALen : longint ) : boolean;
|
| 453 |
var Options: Integer;
|
| 454 |
begin // must handle PCRE_ERROR_PARTIAL here
|
| 455 |
Options := (RunTimeOptions or startup.MiscMultiData.cfgRegEx.DefaultOptions) and
|
| 456 |
PCRE_EXEC_ALLOWED_OPTIONS;
|
| 457 |
if MatchesCount > 0 then
|
| 458 |
MatchesCount:=pcre_exec( RegExpC, RegExpExt, AStr, ALen, PMatchArray(Matches)^[1],
|
| 459 |
Options, Matches, MAX_MATCHES ) else
|
| 460 |
MatchesCount:=pcre_exec( RegExpC, RegExpExt, AStr, ALen, 0,
|
| 461 |
Options, Matches, MAX_MATCHES );
|
| 462 |
{ if MatchesCount = 0 then
|
| 463 |
MatchesCount := MatchesCount div 3;}
|
| 464 |
PartialMatch := MatchesCount = PCRE_ERROR_PARTIAL;
|
| 465 |
SearchNext := MatchesCount > 0;
|
| 466 |
end;
|
| 467 |
|
| 468 |
function TpcRegExp.Search( AStr: Pchar; ALen : longint):boolean;
|
| 469 |
begin
|
| 470 |
MatchesCount:=0;
|
| 471 |
Search:=SearchNext(AStr,ALen);
|
| 472 |
SourceLen:=ALen;
|
| 473 |
end;
|
| 474 |
|
| 475 |
function TpcRegExp.SearchOfs( AStr: Pchar; ALen, AOfs: longint ) : boolean;
|
| 476 |
var Options: Integer;
|
| 477 |
begin
|
| 478 |
MatchesCount:=0;
|
| 479 |
Options := (RunTimeOptions or startup.MiscMultiData.cfgRegEx.DefaultOptions) and
|
| 480 |
PCRE_EXEC_ALLOWED_OPTIONS;
|
| 481 |
MatchesCount:=pcre_exec( RegExpC, RegExpExt, AStr, ALen, AOfs,
|
| 482 |
Options, Matches, MAX_MATCHES );
|
| 483 |
PartialMatch := MatchesCount = PCRE_ERROR_PARTIAL;
|
| 484 |
SearchOfs := MatchesCount > 0;
|
| 485 |
SourceLen := ALen-AOfs;
|
| 486 |
end;
|
| 487 |
|
| 488 |
function TpcRegExp.MatchSub(ANom:integer; var Pos,Len:longint):boolean;
|
| 489 |
begin
|
| 490 |
if (MatchesCount > 0) and (ANom <= (MatchesCount-1)) then
|
| 491 |
begin
|
| 492 |
ANom:=ANom*2;
|
| 493 |
Pos:=PMatchArray(Matches)^[ANom];
|
| 494 |
Len:=PMatchArray(Matches)^[ANom+1]-Pos;
|
| 495 |
MatchSub:=true;
|
| 496 |
end
|
| 497 |
else
|
| 498 |
MatchSub:=false;
|
| 499 |
end;
|
| 500 |
|
| 501 |
function TpcRegExp.MatchFull(var Pos,Len:longint):boolean;
|
| 502 |
begin
|
| 503 |
MatchFull:=MatchSub(0,Pos,Len);
|
| 504 |
end;
|
| 505 |
|
| 506 |
function TpcRegExp.GetSubStr(ANom: integer; AStr: Pchar):string;
|
| 507 |
var
|
| 508 |
s: ansistring;
|
| 509 |
pos,len: longint;
|
| 510 |
begin
|
| 511 |
s:='';
|
| 512 |
if MatchSub(ANom, pos, len) then
|
| 513 |
begin
|
| 514 |
setlength(s, len);
|
| 515 |
Move(AStr[pos], s[1], len);
|
| 516 |
end;
|
| 517 |
GetSubStr:=s;
|
| 518 |
end;
|
| 519 |
|
| 520 |
function TpcRegExp.GetPreSubStr(AStr: Pchar):string;
|
| 521 |
var
|
| 522 |
s: ansistring;
|
| 523 |
l: longint;
|
| 524 |
begin
|
| 525 |
s:='';
|
| 526 |
if (MatchesCount > 0) then
|
| 527 |
begin
|
| 528 |
l:=PMatchArray(Matches)^[0]-1;
|
| 529 |
if l > 0 then
|
| 530 |
begin
|
| 531 |
setlength(s,l);
|
| 532 |
Move(AStr[1],s[1],l);
|
| 533 |
end;
|
| 534 |
end;
|
| 535 |
GetPreSubStr:=s;
|
| 536 |
end;
|
| 537 |
|
| 538 |
function TpcRegExp.GetPostSubStr(AStr: Pchar):string;
|
| 539 |
var
|
| 540 |
s: ansistring;
|
| 541 |
l: longint;
|
| 542 |
ANom: integer;
|
| 543 |
begin
|
| 544 |
s:='';
|
| 545 |
if (MatchesCount > 0) then
|
| 546 |
begin
|
| 547 |
ANom:=(MatchesCount-1){*2} shl 1;
|
| 548 |
l:=SourceLen-PMatchArray(Matches)^[ANom+1]+1;
|
| 549 |
if l > 0 then
|
| 550 |
begin
|
| 551 |
setlength(s,l);
|
| 552 |
Move(AStr[PMatchArray(Matches)^[ANom+1]],s[1],l);
|
| 553 |
end;
|
| 554 |
end;
|
| 555 |
GetPostSubStr:=s;
|
| 556 |
end;
|
| 557 |
|
| 558 |
|
| 559 |
function TpcRegExp.GetFullStr(AStr: Pchar):string;
|
| 560 |
var
|
| 561 |
s: ansistring;
|
| 562 |
l: longint;
|
| 563 |
begin
|
| 564 |
GetFullStr:=GetSubStr(0,AStr);
|
| 565 |
end;
|
| 566 |
|
| 567 |
function TpcRegExp.GetReplStr(AStr: Pchar; const ARepl: string):string;
|
| 568 |
var
|
| 569 |
s: ansistring;
|
| 570 |
l,i,lasti: longint;
|
| 571 |
begin
|
| 572 |
l:=length(ARepl);
|
| 573 |
i:=1;
|
| 574 |
lasti:=1;
|
| 575 |
s:='';
|
| 576 |
while i <= l do
|
| 577 |
begin
|
| 578 |
case ARepl[i] of
|
| 579 |
'\' :
|
| 580 |
begin
|
| 581 |
if i < l then
|
| 582 |
begin
|
| 583 |
s:=s+copy(ARepl,lasti,i-lasti){+ARepl[i+1]};
|
| 584 |
{AH 17-10-05 support for POSIX \1-\9 backreferences}
|
| 585 |
case ARepl[i+1] of
|
| 586 |
'0' : s:=s+GetFullStr(AStr);
|
| 587 |
'1'..'9' : s:=s+GetSubStr(ord(ARepl[i+1])-ord('0'),AStr);
|
| 588 |
else s:=s+ARepl[i+1]; // copy the escaped character
|
| 589 |
end;
|
| 590 |
end;
|
| 591 |
inc(i);
|
| 592 |
lasti:=i+1;
|
| 593 |
end;
|
| 594 |
'$' :
|
| 595 |
begin
|
| 596 |
if i < l then
|
| 597 |
begin
|
| 598 |
s:=s+copy(ARepl,lasti,i-lasti);
|
| 599 |
case ARepl[i+1] of
|
| 600 |
'&' : s:=s+GetFullStr(AStr);
|
| 601 |
'1'..'9' : s:=s+GetSubStr(ord(ARepl[i+1])-ord('0'),AStr);
|
| 602 |
'`' : s:=s+GetPreSubStr(AStr);
|
| 603 |
#39 : s:=s+GetPostSubStr(AStr);
|
| 604 |
end;
|
| 605 |
end;
|
| 606 |
inc(i);
|
| 607 |
lasti:=i+1;
|
| 608 |
end;
|
| 609 |
end;
|
| 610 |
inc(i);
|
| 611 |
end;
|
| 612 |
if lasti <= {AH 25-10-2004 added =, else l==1 won't work} l then
|
| 613 |
s:=s+copy(ARepl,lasti,l-lasti+1);
|
| 614 |
GetReplStr:=s;
|
| 615 |
end;
|
| 616 |
|
| 617 |
function TpcRegExp.ErrorStr:string;
|
| 618 |
begin
|
| 619 |
ErrorStr:=StrPas(ErrorMsg);
|
| 620 |
end;
|
| 621 |
|
| 622 |
{TRegExpCollection}
|
| 623 |
|
| 624 |
constructor TRegExpCollection.Init(AMaxRegExp: integer);
|
| 625 |
begin
|
| 626 |
Inherited Init(1,1);
|
| 627 |
MaxRegExp:=AMaxRegExp;
|
| 628 |
CompareModeInsert:=true;
|
| 629 |
end;
|
| 630 |
|
| 631 |
procedure TRegExpCollection.FreeItem(P: Pointer);
|
| 632 |
begin
|
| 633 |
if P <> nil then
|
| 634 |
begin
|
| 635 |
Dispose(PpcRegExp(P),Done);
|
| 636 |
end;
|
| 637 |
end;
|
| 638 |
|
| 639 |
function TRegExpCollection.Compare(P1, P2: Pointer): Integer;
|
| 640 |
//var
|
| 641 |
// l,l1,l2,i : byte;
|
| 642 |
//// wPos: pchar;
|
| 643 |
begin
|
| 644 |
if CompareModeInsert then
|
| 645 |
begin
|
| 646 |
// l1:=length(PpcRegExp(P1)^.RegExp);
|
| 647 |
// l2:=length(PpcRegExp(P2)^.RegExp);
|
| 648 |
// if l1 > l2 then l:=l2 else
|
| 649 |
// l:=l1;
|
| 650 |
// for i:=1 to l do
|
| 651 |
// if PpcRegExp(P1).RegExp[i] <> PpcRegExp(P2).RegExp[i] then break;
|
| 652 |
// if i <=l then
|
| 653 |
// Compare:=ord(PpcRegExp(P1).RegExp[i])-ord(PpcRegExp(P2).RegExp[i]) else
|
| 654 |
// Compare:=l1-l2;
|
| 655 |
Compare := stringsx.PasStrCmp(PpcRegExp(P1).RegExp, PpcRegExp(P2).RegExp, False);
|
| 656 |
end
|
| 657 |
else
|
| 658 |
begin
|
| 659 |
// l1:=length(PpcRegExp(P1)^.RegExp);
|
| 660 |
// l2:=length(SearchRegExp);
|
| 661 |
// if l1 > l2 then l:=l2 else
|
| 662 |
// l:=l1;
|
| 663 |
// for i:=1 to l do
|
| 664 |
// if PpcRegExp(P1).RegExp[i] <> SearchRegExp[i] then
|
| 665 |
// begin
|
| 666 |
// Compare:=ord(PpcRegExp(P1).RegExp[i])-ord(SearchRegExp[i]);
|
| 667 |
// break;
|
| 668 |
// end;
|
| 669 |
// if i > l then Compare:=l1-l2;
|
| 670 |
Compare := stringsx.PasStrCmp(PpcRegExp(P1).RegExp, SearchRegExp, False);
|
| 671 |
end;
|
| 672 |
end;
|
| 673 |
|
| 674 |
function TRegExpCollection.Find(ARegExp:shortstring;var P: PpcRegExp):boolean;
|
| 675 |
var I : integer;
|
| 676 |
begin
|
| 677 |
CompareModeInsert:=false;
|
| 678 |
SearchRegExp:=ARegExp;
|
| 679 |
if Search(nil,I) then
|
| 680 |
begin
|
| 681 |
P:=PpcRegExp(At(I));
|
| 682 |
Find:=true;
|
| 683 |
end
|
| 684 |
else
|
| 685 |
begin
|
| 686 |
P:=nil;
|
| 687 |
Find:=false;
|
| 688 |
end;
|
| 689 |
CompareModeInsert:=true;
|
| 690 |
end;
|
| 691 |
|
| 692 |
function TRegExpCollection.CheckNew(ARegExp:shortstring):PpcRegExp;
|
| 693 |
var
|
| 694 |
P : PpcRegExp;
|
| 695 |
begin
|
| 696 |
if not Find(ARegExp,P) then
|
| 697 |
begin
|
| 698 |
if Count = MaxRegExp then
|
| 699 |
AtFree(0);
|
| 700 |
P:=New(ppcRegExp,Init(ARegExp,PCRE_CASELESS,nil));
|
| 701 |
Insert(P);
|
| 702 |
end;
|
| 703 |
CheckNew:=P;
|
| 704 |
end;
|
| 705 |
|
| 706 |
function pcGrepMatch(WildCard, aStr: string; AOptions:integer; ALocale : Pointer): Boolean;
|
| 707 |
var
|
| 708 |
PpcRE:PpcRegExp;
|
| 709 |
begin
|
| 710 |
PpcRE:=New(ppcRegExp,Init(WildCard,AOptions,Alocale));
|
| 711 |
pcGrepMatch:=PpcRE^.Search(pchar(AStr),Length(AStr));
|
| 712 |
Dispose(PpcRE,Done);
|
| 713 |
end;
|
| 714 |
|
| 715 |
function pcGrepSub(WildCard, aStr, aRepl: string; AOptions:integer; ALocale : Pointer): string;
|
| 716 |
var
|
| 717 |
PpcRE:PpcRegExp;
|
| 718 |
begin
|
| 719 |
PpcRE:=New(ppcRegExp,Init(WildCard,AOptions,Alocale));
|
| 720 |
if PpcRE^.Search(pchar(AStr),Length(AStr)) then
|
| 721 |
pcGrepSub:=PpcRE^.GetReplStr(pchar(AStr),ARepl)
|
| 722 |
else
|
| 723 |
pcGrepSub:='';
|
| 724 |
Dispose(PpcRE,Done);
|
| 725 |
end;
|
| 726 |
|
| 727 |
function pcFastGrepMatch(WildCard, aStr: string): Boolean;
|
| 728 |
var
|
| 729 |
PpcRE:PpcRegExp;
|
| 730 |
begin
|
| 731 |
PpcRE:=PRegExpCache^.CheckNew(WildCard);
|
| 732 |
pcFastGrepMatch:=PpcRE^.Search(pchar(AStr),Length(AStr));
|
| 733 |
end;
|
| 734 |
|
| 735 |
function pcFastGrepSub(WildCard, aStr, aRepl: string): string;
|
| 736 |
var
|
| 737 |
PpcRE:PpcRegExp;
|
| 738 |
begin
|
| 739 |
PpcRE:=PRegExpCache^.CheckNew(WildCard);
|
| 740 |
if PpcRE^.Search(pchar(AStr),Length(AStr)) then
|
| 741 |
pcFastGrepSub:=PpcRE^.GetReplStr(pchar(AStr),ARepl)
|
| 742 |
else
|
| 743 |
pcFastGrepSub:='';
|
| 744 |
end;
|
| 745 |
|
| 746 |
{$IFDEF PCRE_5_0}
|
| 747 |
function pcGetVersion : pchar; assembler; {$FRAME-}{$USES none}
|
| 748 |
asm
|
| 749 |
call pcre_version
|
| 750 |
end;
|
| 751 |
{$ENDIF PCRE_5_0}
|
| 752 |
|
| 753 |
function pcError;
|
| 754 |
var P: ppcRegExp absolute pRegExp;
|
| 755 |
begin
|
| 756 |
Result := (P = nil) or P^.Error;
|
| 757 |
If Result and (P <> nil) then
|
| 758 |
begin
|
| 759 |
{ if P^.ErrorPos = 0 then
|
| 760 |
MessageBox(GetString(erRegExpCompile)+'"'+P^.ErrorStr+'"', nil,mfConfirmation+mfOkButton)
|
| 761 |
else}
|
| 762 |
MessageBox(GetString(erRegExpCompile)+'"'+P^.ErrorStr+'"'+GetString(erRegExpCompPos),
|
| 763 |
@P^.ErrorPos,mfConfirmation+mfOkButton);
|
| 764 |
Dispose(P, Done);
|
| 765 |
P:=nil;
|
| 766 |
end;
|
| 767 |
end;
|
| 768 |
|
| 769 |
function pcInit;
|
| 770 |
var Options : Integer;
|
| 771 |
begin
|
| 772 |
If CaseSens then Options := 0 else Options := PCRE_CASELESS;
|
| 773 |
Result := New( PpcRegExp, Init( Pattern,
|
| 774 |
{DefaultOptions}
|
| 775 |
startup.MiscMultiData.cfgRegEx.DefaultOptions or Options,
|
| 776 |
DefaultLocaleTable) );
|
| 777 |
end;
|
| 778 |
|
| 779 |
Initialization
|
| 780 |
PRegExpCache:=New(PRegExpCollection,Init(64));
|
| 781 |
Finalization
|
| 782 |
Dispose(PRegExpCache,Done);
|
| 783 |
End.
|
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