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/*
Variables Plugin for Miranda-IM (www.miranda-im.org)
Copyright 2003-2006 P. Boon
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 "variables.h"
#include "parse_regexp.h"
#include <pcre.h>
static void (*pcreFree)(void *);
static pcre_extra *(*pcreStudy)(const pcre *, int, const char **);
static pcre *(*pcreCompile)(const char *, int, const char **, int *, const unsigned char *);
static int (*pcreExec)(const pcre *, const pcre_extra *, const char *, int, int, int, int *, int);
static void *(*pcreMalloc)(size_t);
static void (*pcreFreeSubstring)(const char *);
static int (*pcreGetSubstring)(const char *, int *, int, int, const char **);
/*
pattern, subject
*/
static TCHAR *parseRegExpCheck(ARGUMENTSINFO *ai) {
const char *err;
int erroffset, nmat;
pcre_extra *extra;
pcre *ppat;
char szVal[34], *arg1, *arg2;
int offsets[99];
TCHAR *res;
if (ai->argc != 3) {
return NULL;
}
ai->flags = AIF_FALSE;
#ifdef UNICODE
arg1 = u2a(ai->targv[1]);
arg2 = u2a(ai->targv[2]);
#else
arg1 = _strdup(ai->argv[1]);
arg2 = _strdup(ai->argv[2]);
#endif
ppat = pcreCompile(arg1, 0, &err, &erroffset, NULL);
if (ppat == NULL) {
free(arg1);
free(arg2);
return NULL;
}
extra = pcreStudy(ppat, 0, &err);
nmat = pcreExec(ppat, extra, arg2, strlen(arg2), 0, 0, offsets, 99);
free(arg1);
free(arg2);
if (nmat > 0) {
ai->flags &= ~AIF_FALSE;
_ltoa(nmat, szVal, 10);
#ifdef UNICODE
res = a2u(szVal);
#else
res = _strdup(szVal);
#endif
return res;
}
return _tcsdup(_T("0"));
}
/*
pattern, subject, substring no (== PCRE string no (starting at 0))
*/
static TCHAR *parseRegExpSubstr(ARGUMENTSINFO *ai) {
const char *err, *substring;
char *res, *arg1, *arg2, *arg3;
int erroffset, nmat, number;
pcre_extra *extra;
pcre *ppat;
int offsets[99];
TCHAR *tres;
if (ai->argc != 4) {
return NULL;
}
#ifdef UNICODE
arg1 = u2a(ai->targv[1]);
arg2 = u2a(ai->targv[2]);
arg3 = u2a(ai->targv[3]);
#else
arg1 = _strdup(ai->argv[1]);
arg2 = _strdup(ai->argv[2]);
arg3 = _strdup(ai->argv[3]);
#endif
number = atoi(arg3);
if (number < 0) {
free(arg1);
free(arg2);
free(arg3);
return NULL;
}
ai->flags = AIF_FALSE;
ppat = pcreCompile(arg1, 0, &err, &erroffset, NULL);
if (ppat == NULL) {
free(arg1);
free(arg2);
free(arg3);
return NULL;
}
extra = pcreStudy(ppat, 0, &err);
nmat = pcreExec(ppat, extra, arg2, strlen(arg2), 0, 0, offsets, 99);
if (nmat >= 0) {
ai->flags &= ~AIF_FALSE;
}
if (pcreGetSubstring(arg2, offsets, nmat, number, &substring) < 0) {
ai->flags |= AIF_FALSE;
}
else {
res = _strdup(substring);
pcreFreeSubstring(substring);
#ifdef UNICODE
tres = a2u(res);
#else
tres = _strdup(res);
#endif
free(res);
free(arg1);
free(arg2);
free(arg3);
return tres;
}
free(arg1);
free(arg2);
free(arg3);
return _tcsdup(_T(""));
}
int initPcre() {
HMODULE hModule;
hModule = LoadLibraryA("pcre.dll");
if (hModule == NULL) {
char path[MAX_PATH];
char *cur;
GetModuleFileNameA(NULL, path, sizeof(path));
cur = strrchr(path, '\\');
if (cur != NULL)
strcpy(cur+1, "pcre.dll");
else
strcpy(path, "pcre.dll");
hModule = LoadLibraryA(path);
if (hModule == NULL) {
if (cur != NULL)
strcpy(cur+1, "pcre3.dll");
else
strcpy(path, "pcre3.dll");
hModule = LoadLibraryA(path);
}
}
if (hModule == NULL) {
return -1;
}
pcreMalloc = (void *(__cdecl *)(size_t))GetProcAddress(hModule, "pcre_malloc");
pcreFree = (void (__cdecl *)(void *))GetProcAddress(hModule, "pcre_free");
pcreStudy = (struct pcre_extra *(__cdecl *)(const struct real_pcre *,int ,const char ** ))GetProcAddress(hModule, "pcre_study");
pcreCompile = (struct real_pcre *(__cdecl *)(const char *,int ,const char ** ,int *,const unsigned char *))GetProcAddress(hModule, "pcre_compile");
pcreExec = (int (__cdecl *)(const struct real_pcre *,const struct pcre_extra *,const char *,int ,int ,int ,int *,int ))GetProcAddress(hModule, "pcre_exec");
pcreFreeSubstring = (void (__cdecl *)(const char *))GetProcAddress(hModule, "pcre_free_substring");
pcreGetSubstring = (int (__cdecl *)(const char *,int *,int ,int ,const char ** ))GetProcAddress(hModule, "pcre_get_substring");
return 0;
}
int registerRegExpTokens() {
if (initPcre() != 0) {
log_infoA("Variables: pcre.dll for PCRE not found");
return -1;
}
#ifdef UNICODE
registerIntToken(_T(REGEXPCHECK), parseRegExpCheck, TRF_FUNCTION, "Regular Expressions\t(x,y)\t(ANSI input only) the number of substring matches found in y with pattern x");
registerIntToken(_T(REGEXPSUBSTR), parseRegExpSubstr, TRF_FUNCTION, "Regular Expressions\t(x,y,z)\t(ANSI input only) substring match number z found in subject y with pattern x");
#else
registerIntToken(_T(REGEXPCHECK), parseRegExpCheck, TRF_FUNCTION, "Regular Expressions\t(x,y)\tthe number of substring matches found in y with pattern x");
registerIntToken(_T(REGEXPSUBSTR), parseRegExpSubstr, TRF_FUNCTION, "Regular Expressions\t(x,y,z)\tsubstring match number z found in subject y with pattern x");
#endif
return 0;
}
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