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Diffstat (limited to 'src/lib/pcre/pcre.pas')
| -rw-r--r-- | src/lib/pcre/pcre.pas | 867 |
1 files changed, 867 insertions, 0 deletions
diff --git a/src/lib/pcre/pcre.pas b/src/lib/pcre/pcre.pas new file mode 100644 index 00000000..ab04a9d0 --- /dev/null +++ b/src/lib/pcre/pcre.pas @@ -0,0 +1,867 @@ +{**************************************************************************************************} +{ } +{ 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} + +(*$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 + {$IFNDEF FPC} + {$IFDEF CPU64} + SizeInt = Int64; + {$ELSE ~CPU64} + SizeInt = Integer; + {$ENDIF ~CPU64} + PPAnsiChar = ^PAnsiChar; + {$ENDIF ~FPC} + PPPAnsiChar = ^PPAnsiChar; + + real_pcre = packed record + {magic_number: Longword; + size: Integer; + tables: PAnsiChar; + options: Longword; + top_bracket: Word; + top_backref: word; + first_char: PAnsiChar; + req_char: PAnsiChar; + code: array [0..0] of AnsiChar;} + end; + TPCRE = real_pcre; + PPCRE = ^TPCRE; + + real_pcre_extra = packed record + {options: PAnsiChar; + start_bits: array [0..31] of AnsiChar;} + flags: Cardinal; (* Bits for which fields are set *) + study_data: Pointer; (* Opaque data from pcre_study() *) + match_limit: Cardinal; (* Maximum number of calls to match() *) + callout_data: Pointer; (* Data passed back in callouts *) + tables: PAnsiChar; (* Pointer to character tables *) + match_limit_recursion: Cardinal; (* Max recursive calls to match() *) + end; + TPCREExtra = real_pcre_extra; + PPCREExtra = ^TPCREExtra; + + pcre_callout_block = packed record + version: Integer; (* Identifies version of block *) + (* ------------------------ Version 0 ------------------------------- *) + callout_number: Integer; (* Number compiled into pattern *) + offset_vector: PInteger; (* The offset vector *) + subject: PAnsiChar; (* The subject being matched *) + subject_length: Integer; (* The length of the subject *) + start_match: Integer; (* Offset to start of this match attempt *) + current_position: Integer; (* Where we currently are in the subject *) + capture_top: Integer; (* Max current capture *) + capture_last: Integer; (* Most recently closed capture *) + callout_data: Pointer; (* Data passed in with the call *) + (* ------------------- Added for Version 1 -------------------------- *) + pattern_position: Integer; (* Offset to next item in the pattern *) + next_item_length: Integer; (* Length of next item in the pattern *) + (* ------------------------------------------------------------------ *) + end; + + pcre_malloc_callback = function(Size: SizeInt): Pointer; cdecl; + {$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; + +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, + {$IFDEF DARWIN} + UConfig, + {$ENDIF DARWIN} + {$IFDEF MSWINDOWS} + Windows; + {$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; + {$ENDIF LINUX} + {$IFDEF DARWIN} + TModuleHandle = Pointer; + {$ENDIF DARWIN} + +const + {$IFDEF MSWINDOWS} + libpcremodulename = 'pcre3.dll'; + {$ENDIF MSWINDOWS} + {$IFDEF LINUX} + libpcremodulename = 'libpcre.so.0'; + {$ENDIF LINUX} + {$IFDEF DARWIN} + libpcremodulename = 'libpcre.dylib'; // this is a symlink for example to libpcre.0.0.1.dylib + // the system resolves the symlink + libpcremodulenamefromfink = LIBPCRE_LIBDIR + '/' + libpcremodulename; + // the install command in the Makefile resolves the symlink, when installing libpcre.dylib in the app bundle + libpcremodulenamefromexecutable = '@executable_path/' + libpcremodulename; + {$ENDIF DARWIN} + 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); + {$ENDIF UNIX} + + {$IFDEF DARWIN} // if libpcre.dylib is not found, first try from the executable path and finally from the fink path + if PCRELib = INVALID_MODULEHANDLE_VALUE then + PCRELib := dlopen(PAnsiChar(libpcremodulenamefromexecutable), RTLD_NOW); + if PCRELib = INVALID_MODULEHANDLE_VALUE then + PCRELib := dlopen(PAnsiChar(libpcremodulenamefromfink), RTLD_NOW); + {$ENDIF DARWIN} + + Result := PCRELib <> INVALID_MODULEHANDLE_VALUE; + if Result then + begin + @pcre_compile := GetSymbol(PCRECompileExportName); + @pcre_compile2 := GetSymbol(PCRECompile2ExportName); + @pcre_config := GetSymbol(PCREConfigExportName); + @pcre_copy_named_substring := GetSymbol(PCRECopyNamedSubstringExportName); + @pcre_copy_substring := GetSymbol(PCRECopySubStringExportName); + @pcre_dfa_exec := GetSymbol(PCREDfaExecExportName); + @pcre_exec := GetSymbol(PCREExecExportName); + @pcre_free_substring := GetSymbol(PCREFreeSubStringExportName); + @pcre_free_substring_list := GetSymbol(PCREFreeSubStringListExportName); + @pcre_fullinfo := GetSymbol(PCREFullInfoExportName); + @pcre_get_named_substring := GetSymbol(PCREGetNamedSubstringExportName); + @pcre_get_stringnumber := GetSymbol(PCREGetStringNumberExportName); + @pcre_get_stringtable_entries := GetSymbol(PCREGetStringTableEntriesExportName); + @pcre_get_substring := GetSymbol(PCREGetSubStringExportName); + @pcre_get_substring_list := GetSymbol(PCREGetSubStringListExportName); + @pcre_info := GetSymbol(PCREInfoExportName); + @pcre_maketables := GetSymbol(PCREMakeTablesExportName); + @pcre_refcount := GetSymbol(PCRERefCountExportName); + @pcre_study := GetSymbol(PCREStudyExportName); + @pcre_version := GetSymbol(PCREVersionExportName); + pcre_malloc_func := GetSymbol(PCREMallocExportName); + pcre_free_func := GetSymbol(PCREFreeExportName); + pcre_stack_malloc_func := GetSymbol(PCREStackMallocExportName); + pcre_stack_free_func := GetSymbol(PCREStackFreeExportName); + pcre_callout_func := GetSymbol(PCRECalloutExportName); + end + else + InitPCREFuncPtrs(@LibNotLoadedHandler); +end; + +procedure UnloadPCRE; +begin + if PCRELib <> INVALID_MODULEHANDLE_VALUE then + {$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. |