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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"
struct ALIASREGISTER
{
TCHAR *szAlias;
unsigned int argc;
TCHAR **argv;
TCHAR *szTranslation;
};
static LIST<ALIASREGISTER> arAliases(5);
static CRITICAL_SECTION csAliasRegister;
static ALIASREGISTER *searchAliasRegister(TCHAR *szAlias)
{
if (szAlias == NULL || *szAlias == 0)
return NULL;
mir_cslock lck(csAliasRegister);
for (int i = 0; i < arAliases.getCount(); i++)
if (!_tcscmp(arAliases[i]->szAlias, szAlias))
return arAliases[i];
return NULL;
}
static TCHAR *replaceArguments(TCHAR *res, TCHAR *tArg, TCHAR *rArg)
{
if (_tcslen(tArg) == 0)
return res;
unsigned int cur = 0, ecur = 0;
while (*(res + cur) != 0) {
if ((*(res + cur) == '(') || (*(res + cur) == ',')) {
ecur = ++cur;
while ((*(res + ecur) != ')') && (*(res + ecur) != ','))
ecur++;
if (((signed int)_tcslen(tArg) == (ecur - cur)) && (!_tcsncmp(tArg, res + cur, _tcslen(tArg)))) {
if (_tcslen(rArg) > _tcslen(tArg)) {
res = (TCHAR*)mir_realloc(res, (_tcslen(res) + (_tcslen(rArg) - _tcslen(tArg)) + 1)*sizeof(TCHAR));
if (res == NULL)
return NULL;
}
memmove(res + ecur + (_tcslen(rArg) - _tcslen(tArg)), res + ecur, (_tcslen(res + ecur) + 1)*sizeof(TCHAR));
_tcsncpy(res + cur, rArg, _tcslen(rArg));
}
}
cur++;
}
return res;
}
static TCHAR *parseTranslateAlias(ARGUMENTSINFO *ai)
{
ALIASREGISTER *areg = searchAliasRegister(ai->targv[0]);
if (areg == NULL || areg->argc != ai->argc - 1)
return NULL;
TCHAR *res = mir_tstrdup(areg->szTranslation);
for (unsigned i = 0; i < areg->argc; i++) {
res = replaceArguments(res, areg->argv[i], ai->targv[i + 1]);
if (res == NULL)
return NULL;
}
return res;
}
static int addToAliasRegister(TCHAR *szAlias, unsigned int argc, TCHAR** argv, TCHAR *szTranslation)
{
if (szAlias == NULL || szTranslation == NULL || _tcslen(szAlias) == 0)
return -1;
mir_cslock lck(csAliasRegister);
for (int i = 0; i < arAliases.getCount(); i++) {
ALIASREGISTER *p = arAliases[i];
if (_tcscmp(p->szAlias, szAlias))
continue;
mir_free(p->szTranslation);
p->szTranslation = mir_tstrdup(szTranslation);
for (unsigned j = 0; j < p->argc; j++)
mir_free(p->argv[j]);
p->argc = argc;
p->argv = (TCHAR**)mir_realloc(p->argv, argc * sizeof(TCHAR*));
if (p->argv == NULL)
return -1;
for (unsigned j = 0; j < argc; j++) {
if (argv[j] != NULL)
p->argv[j] = mir_tstrdup(argv[j]);
else
p->argv[j] = NULL;
}
return 0;
}
ALIASREGISTER *p = new ALIASREGISTER;
p->szAlias = mir_tstrdup(szAlias);
p->szTranslation = mir_tstrdup(szTranslation);
p->argc = argc;
p->argv = (TCHAR**)mir_alloc(argc * sizeof(TCHAR*));
if (p->argv == NULL)
return -1;
for (unsigned j = 0; j < p->argc; j++) {
if (argv[j] != NULL)
p->argv[j] = mir_tstrdup(argv[j]);
else
p->argv[j] = NULL;
}
arAliases.insert(p);
return 0;
}
static TCHAR *parseAddAlias(ARGUMENTSINFO *ai)
{
int res;
char *szHelp, *szArgsA;
if (ai->argc != 3)
return NULL;
TCHAR *cur = ai->targv[1];
while (isValidTokenChar(*cur))
cur++;
ptrT alias(mir_tstrndup(ai->targv[1], cur - ai->targv[1]));
int argc;
TCHAR **argv;
getArguments(cur, &argv, &argc);
deRegisterToken(alias);
addToAliasRegister(alias, argc, argv, ai->targv[2]);
TCHAR *szArgs = NULL;
for (int i = 0; i < argc; i++) {
if (i == 0)
szArgs = (TCHAR*)mir_calloc((_tcslen(argv[i]) + 2)*sizeof(TCHAR));
else
szArgs = (TCHAR*)mir_realloc(szArgs, (_tcslen(szArgs) + _tcslen(argv[i]) + 2)*sizeof(TCHAR));
_tcscat(szArgs, argv[i]);
if (i != argc - 1)
_tcscat(szArgs, _T(","));
}
if (szArgs != NULL && argc > 0) {
szArgsA = mir_t2a(szArgs);
size_t size = 32 + strlen(szArgsA);
szHelp = (char *)mir_alloc(size);
memset(szHelp, '\0', 32 + strlen(szArgsA));
mir_snprintf(szHelp, size, LPGEN("Alias")"\t(%s)\t"LPGEN("user defined"), szArgsA);
res = registerIntToken(alias, parseTranslateAlias, TRF_FUNCTION | TRF_UNPARSEDARGS, szHelp);
mir_free(szArgsA);
}
else {
szHelp = (char*)mir_alloc(32);
memset(szHelp, '\0', 32);
mir_snprintf(szHelp, 32, LPGEN("Alias")"\t\t"LPGEN("user defined"));
res = registerIntToken(alias, parseTranslateAlias, TRF_FIELD | TRF_UNPARSEDARGS, szHelp);
}
mir_free(szArgs);
mir_free(szHelp);
return (res == 0) ? mir_tstrdup(_T("")) : NULL;
}
void registerAliasTokens()
{
registerIntToken(ADDALIAS, parseAddAlias, TRF_FUNCTION | TRF_UNPARSEDARGS, LPGEN("Variables")"\t(x,y)\t"LPGEN("stores y as alias named x"));//TRF_UNPARSEDARGS);
InitializeCriticalSection(&csAliasRegister);
}
void unregisterAliasTokens()
{
DeleteCriticalSection(&csAliasRegister);
for (int i = 0; i < arAliases.getCount(); i++) {
ALIASREGISTER *p = arAliases[i];
for (unsigned j = 0; j < p->argc; j++)
mir_free(p->argv[j]);
mir_free(p->argv);
mir_free(p->szAlias);
mir_free(p->szTranslation);
delete p;
}
}
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