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/*
Pcre.cpp
Copyright (c) 2007-2008 Chervov Dmitry
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; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "stdafx.h"
#include <windows.h>
#include <stdio.h>
#include <crtdbg.h>
#include "newpluginapi.h"
#include "m_utils.h"
#include "TMyArray.h"
#include "CString.h"
#include "pcre.h"
typedef struct
{
pcre16 *pPcre;
pcre16_extra *pExtra;
TCString Pattern; // used when it's not a valid regexp
int ID; // user-defined ID of the pattern; returned by PcreCheck on a match
} sPcreCompileData;
TMyArray<sPcreCompileData> PcreCompileData;
void FreePcreCompileData()
{
int I;
for (I = 0; I < PcreCompileData.GetSize(); I++)
{
if (PcreCompileData[I].pPcre)
{
pcre16_free(PcreCompileData[I].pPcre);
if (PcreCompileData[I].pExtra)
{
pcre16_free(PcreCompileData[I].pExtra);
}
}
}
PcreCompileData.RemoveAll();
}
TCString CompileRegexp(TCString Regexp, int bAddAsUsualSubstring, int ID)
{
TCString Result(L"");
sPcreCompileData s = {};
int NewID = PcreCompileData.AddElem(s);
PcreCompileData[NewID].ID = ID;
if (!bAddAsUsualSubstring)
{
const char *Err;
int ErrOffs;
int Flags = PCRE_CASELESS;
if (Regexp[0] == '/')
{
TCString OrigRegexp = Regexp;
Regexp = Regexp.Right(Regexp.GetLen() - 1);
wchar_t *pRegexpEnd = (wchar_t*)Regexp + Regexp.GetLen();
wchar_t *p = wcsrchr(Regexp.GetBuffer(), '/');
if (!p)
{
Regexp = OrigRegexp;
} else
{
*p = 0;
Flags = 0;
while (++p < pRegexpEnd)
{
switch (*p) {
case 'i':
Flags |= PCRE_CASELESS;
break;
case 'm':
Flags |= PCRE_MULTILINE;
break;
case 's':
Flags |= PCRE_DOTALL;
break;
case 'x':
Flags |= PCRE_EXTENDED;
break;
case 'A':
Flags |= PCRE_ANCHORED;
break;
case 'f':
Flags |= PCRE_FIRSTLINE;
break;
case 'D':
Flags |= PCRE_DOLLAR_ENDONLY;
break;
case 'U':
Flags |= PCRE_UNGREEDY;
break;
case 'X':
Flags |= PCRE_EXTRA;
break;
default:
// Result += LogMessage(Translate("Warning, unknown pattern modifier '%c':\n"), *p );
break;
}
}
}
Regexp.ReleaseBuffer();
}
PcreCompileData[NewID].pPcre = pcre16_compile(Regexp, PCRE_UTF8 | PCRE_NO_UTF8_CHECK | Flags, &Err, &ErrOffs, nullptr);
if (PcreCompileData[NewID].pPcre) {
PcreCompileData[NewID].pExtra = nullptr;
PcreCompileData[NewID].pExtra = pcre16_study(PcreCompileData[NewID].pPcre, 0, &Err);
}
else {
// Result += LogMessage(TranslateT("Syntax error in regexp\n%s\nat offset %d: %s."), (wchar_t*)Regexp, ErrOffs, (wchar_t*)ANSI2TCHAR(Err)) + L"\n\n";
PcreCompileData[NewID].Pattern = Regexp;
}
}
else PcreCompileData[NewID].Pattern = Regexp;
return Result;
}
int PcreCheck(TCString Str, int StartingID)
{ // StartingID specifies the pattern from which to start checking, i.e. the check starts from the next pattern after the one that has ID == StartingID
int I;
if (StartingID == -1)
{
I = 0;
} else
{
for (I = 0; I < PcreCompileData.GetSize(); I++)
{
if (PcreCompileData[I].ID == StartingID)
{
I++;
break;
}
}
}
for (; I < PcreCompileData.GetSize(); I++)
{
if (PcreCompileData[I].pPcre)
{
int Res = pcre16_exec(PcreCompileData[I].pPcre, PcreCompileData[I].pExtra, Str, Str.GetLen() - 1, 0, PCRE_NOTEMPTY | PCRE_NO_UTF8_CHECK, nullptr, 0);
if (Res >= 0)
{
return PcreCompileData[I].ID;
}
} else
{
if (wcsstr(Str.ToLower(), PcreCompileData[I].Pattern.ToLower()))
{
return PcreCompileData[I].ID;
}
}
}
return -1;
}
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