icinga2/cib/macroprocessor.cpp

60 lines
2.4 KiB
C++

/******************************************************************************
* Icinga 2 *
* Copyright (C) 2012 Icinga Development Team (http://www.icinga.org/) *
* *
* 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 St, Fifth Floor, Boston, MA 02110-1301, USA. *
******************************************************************************/
#include "i2-cib.h"
using namespace icinga;
string MacroProcessor::ResolveMacros(const string& str, const vector<Dictionary::Ptr>& macroDicts)
{
string::size_type offset, pos_first, pos_second;
offset = 0;
string result = str;
while ((pos_first = result.find_first_of('$', offset)) != string::npos) {
pos_second = result.find_first_of('$', pos_first + 1);
if (pos_second == string::npos)
throw runtime_error("Closing $ not found in macro format string.");
string name = result.substr(pos_first + 1, pos_second - pos_first - 1);
string value;
bool resolved = false;
vector<Dictionary::Ptr>::const_iterator it;
for (it = macroDicts.begin(); it != macroDicts.end(); it++) {
Dictionary::Ptr macros = *it;
if (macros && macros->Get(name, &value)) {
resolved = true;
break;
}
}
if (!resolved)
throw runtime_error("Macro '" + name + "' is not defined.");
result.replace(pos_first, pos_second - pos_first + 1, value);
offset = pos_first + value.size();
}
return result;
}