Files
EqualizerAPO/parser/RegexFunctions.cpp

100 lines
3.0 KiB
C++

/*
This file is part of EqualizerAPO, a system-wide equalizer.
Copyright (C) 2014 Jonas Thedering
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.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "stdafx.h"
#include <regex>
#include "RegexFunctions.h"
using namespace std;
using namespace mup;
RegexSearchFunction::RegexSearchFunction()
: ICallback(cmFUNC, L"regexSearch", 2)
{
}
void RegexSearchFunction::Eval(ptr_val_type& ret, const ptr_val_type* arg, int argc)
{
if (!arg[0]->IsString())
throw ParserError(ErrorContext(ecTYPE_CONFLICT_FUN, -1, GetIdent(), arg[0]->GetType(), 's', 1));
if (!arg[1]->IsString())
throw ParserError(ErrorContext(ecTYPE_CONFLICT_FUN, -1, GetIdent(), arg[1]->GetType(), 's', 2));
wstring regexString = arg[0]->GetString();
wstring string = arg[1]->GetString();
wregex regex(regexString);
wsmatch match;
bool found = regex_search(string, match, regex);
vector<Value> result;
if (found)
{
for (unsigned i = 0; i < match.size(); i++)
result.push_back(match.str(i));
}
*ret = result;
}
const char_type* RegexSearchFunction::GetDesc() const
{
return L"regexSearch - searches first match to regular expression. result is empty if not matching";
}
IToken* RegexSearchFunction::Clone() const
{
return new RegexSearchFunction(*this);
}
RegexReplaceFunction::RegexReplaceFunction()
: ICallback(cmFUNC, L"regexReplace", 3)
{
}
void RegexReplaceFunction::Eval(ptr_val_type& ret, const ptr_val_type* arg, int argc)
{
if (!arg[0]->IsString())
throw ParserError(ErrorContext(ecTYPE_CONFLICT_FUN, -1, GetIdent(), arg[0]->GetType(), 's', 1));
if (!arg[1]->IsString())
throw ParserError(ErrorContext(ecTYPE_CONFLICT_FUN, -1, GetIdent(), arg[1]->GetType(), 's', 2));
if (!arg[2]->IsString())
throw ParserError(ErrorContext(ecTYPE_CONFLICT_FUN, -1, GetIdent(), arg[2]->GetType(), 's', 3));
wstring regexString = arg[0]->GetString();
wstring string = arg[1]->GetString();
wstring replacement = arg[2]->GetString();
wregex regex(regexString);
wstring result = regex_replace(string, regex, replacement);
*ret = result;
}
const char_type* RegexReplaceFunction::GetDesc() const
{
return L"regexReplace - replaces all matches to regular expression. result is replaced string";
}
IToken* RegexReplaceFunction::Clone() const
{
return new RegexReplaceFunction(*this);
}