mirror of https://github.com/Icinga/icinga2.git
274 lines
7.6 KiB
C++
274 lines
7.6 KiB
C++
/******************************************************************************
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* Icinga 2 *
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* Copyright (C) 2012-2016 Icinga Development Team (https://www.icinga.org/) *
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* *
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* This program is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU General Public License *
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* as published by the Free Software Foundation; either version 2 *
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* of the License, or (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the Free Software Foundation *
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
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******************************************************************************/
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#include "base/configwriter.hpp"
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#include "config/configcompiler.hpp"
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#include "base/exception.hpp"
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#include <boost/foreach.hpp>
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#include <boost/regex.hpp>
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#include <boost/algorithm/string/replace.hpp>
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#include <boost/algorithm/string/split.hpp>
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#include <boost/algorithm/string/classification.hpp>
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#include <set>
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#include <iterator>
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using namespace icinga;
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void ConfigWriter::EmitBoolean(std::ostream& fp, bool val)
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{
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fp << (val ? "true" : "false");
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}
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void ConfigWriter::EmitNumber(std::ostream& fp, double val)
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{
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fp << std::fixed << val;
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}
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void ConfigWriter::EmitString(std::ostream& fp, const String& val)
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{
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fp << "\"" << EscapeIcingaString(val) << "\"";
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}
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void ConfigWriter::EmitEmpty(std::ostream& fp)
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{
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fp << "null";
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}
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void ConfigWriter::EmitArray(std::ostream& fp, int indentLevel, const Array::Ptr& val)
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{
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fp << "[ ";
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EmitArrayItems(fp, indentLevel, val);
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if (val->GetLength() > 0)
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fp << " ";
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fp << "]";
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}
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void ConfigWriter::EmitArrayItems(std::ostream& fp, int indentLevel, const Array::Ptr& val)
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{
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bool first = true;
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ObjectLock olock(val);
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BOOST_FOREACH(const Value& item, val) {
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if (first)
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first = false;
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else
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fp << ", ";
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EmitValue(fp, indentLevel, item);
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}
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}
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void ConfigWriter::EmitScope(std::ostream& fp, int indentLevel, const Dictionary::Ptr& val, const Array::Ptr& imports)
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{
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fp << "{";
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if (imports && imports->GetLength() > 0) {
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ObjectLock xlock(imports);
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BOOST_FOREACH(const Value& import, imports) {
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fp << "\n";
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EmitIndent(fp, indentLevel);
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fp << "import \"" << import << "\"";
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}
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fp << "\n";
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}
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if (val) {
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ObjectLock olock(val);
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BOOST_FOREACH(const Dictionary::Pair& kv, val) {
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fp << "\n";
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EmitIndent(fp, indentLevel);
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std::vector<String> tokens;
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boost::algorithm::split(tokens, kv.first, boost::is_any_of("."));
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EmitIdentifier(fp, tokens[0], true);
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for (std::vector<String>::size_type i = 1; i < tokens.size(); i++) {
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fp << "[";
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EmitString(fp, tokens[i]);
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fp << "]";
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}
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fp << " = ";
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EmitValue(fp, indentLevel + 1, kv.second);
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}
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}
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fp << "\n";
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EmitIndent(fp, indentLevel - 1);
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fp << "}";
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}
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void ConfigWriter::EmitValue(std::ostream& fp, int indentLevel, const Value& val)
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{
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if (val.IsObjectType<Array>())
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EmitArray(fp, indentLevel, val);
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else if (val.IsObjectType<Dictionary>())
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EmitScope(fp, indentLevel, val);
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else if (val.IsObjectType<ConfigIdentifier>())
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EmitIdentifier(fp, static_cast<ConfigIdentifier::Ptr>(val)->GetName(), false);
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else if (val.IsString())
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EmitString(fp, val);
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else if (val.IsNumber())
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EmitNumber(fp, val);
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else if (val.IsBoolean())
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EmitBoolean(fp, val);
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else if (val.IsEmpty())
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EmitEmpty(fp);
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}
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void ConfigWriter::EmitRaw(std::ostream& fp, const String& val)
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{
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fp << val;
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}
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void ConfigWriter::EmitIndent(std::ostream& fp, int indentLevel)
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{
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for (int i = 0; i < indentLevel; i++)
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fp << "\t";
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}
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void ConfigWriter::EmitIdentifier(std::ostream& fp, const String& identifier, bool inAssignment)
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{
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static std::set<String> keywords;
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static boost::mutex mutex;
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{
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boost::mutex::scoped_lock lock(mutex);
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if (keywords.empty()) {
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const std::vector<String>& vkeywords = GetKeywords();
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std::copy(vkeywords.begin(), vkeywords.end(), std::inserter(keywords, keywords.begin()));
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}
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}
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if (keywords.find(identifier) != keywords.end()) {
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fp << "@" << identifier;
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return;
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}
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boost::regex expr("^[a-zA-Z_][a-zA-Z0-9\\_]*$");
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boost::smatch what;
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if (boost::regex_search(identifier.GetData(), what, expr))
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fp << identifier;
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else if (inAssignment)
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EmitString(fp, identifier);
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else
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BOOST_THROW_EXCEPTION(std::invalid_argument("Invalid identifier"));
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}
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void ConfigWriter::EmitConfigItem(std::ostream& fp, const String& type, const String& name, bool isTemplate,
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bool ignoreOnError, const Array::Ptr& imports, const Dictionary::Ptr& attrs)
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{
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if (isTemplate)
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fp << "template ";
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else
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fp << "object ";
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EmitIdentifier(fp, type, false);
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fp << " ";
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EmitString(fp, name);
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if (ignoreOnError)
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fp << " ignore_on_error";
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fp << " ";
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EmitScope(fp, 1, attrs, imports);
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}
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void ConfigWriter::EmitComment(std::ostream& fp, const String& text)
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{
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fp << "/* " << text << " */\n";
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}
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void ConfigWriter::EmitFunctionCall(std::ostream& fp, const String& name, const Array::Ptr& arguments)
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{
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EmitIdentifier(fp, name, false);
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fp << "(";
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EmitArrayItems(fp, 0, arguments);
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fp << ")";
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}
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String ConfigWriter::EscapeIcingaString(const String& str)
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{
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String result = str;
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boost::algorithm::replace_all(result, "\\", "\\\\");
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boost::algorithm::replace_all(result, "\n", "\\n");
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boost::algorithm::replace_all(result, "\t", "\\t");
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boost::algorithm::replace_all(result, "\r", "\\r");
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boost::algorithm::replace_all(result, "\b", "\\b");
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boost::algorithm::replace_all(result, "\f", "\\f");
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boost::algorithm::replace_all(result, "\"", "\\\"");
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return result;
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}
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const std::vector<String>& ConfigWriter::GetKeywords(void)
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{
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static std::vector<String> keywords;
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static boost::mutex mutex;
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boost::mutex::scoped_lock lock(mutex);
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if (keywords.empty()) {
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keywords.push_back("object");
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keywords.push_back("template");
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keywords.push_back("include");
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keywords.push_back("include_recursive");
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keywords.push_back("include_zones");
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keywords.push_back("library");
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keywords.push_back("null");
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keywords.push_back("true");
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keywords.push_back("false");
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keywords.push_back("const");
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keywords.push_back("var");
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keywords.push_back("this");
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keywords.push_back("globals");
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keywords.push_back("locals");
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keywords.push_back("use");
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keywords.push_back("ignore_on_error");
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keywords.push_back("current_filename");
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keywords.push_back("current_line");
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keywords.push_back("apply");
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keywords.push_back("to");
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keywords.push_back("where");
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keywords.push_back("import");
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keywords.push_back("assign");
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keywords.push_back("ignore");
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keywords.push_back("function");
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keywords.push_back("return");
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keywords.push_back("break");
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keywords.push_back("continue");
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keywords.push_back("for");
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keywords.push_back("if");
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keywords.push_back("else");
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keywords.push_back("while");
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keywords.push_back("throw");
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}
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return keywords;
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}
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ConfigIdentifier::ConfigIdentifier(const String& identifier)
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: m_Name(identifier)
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{ }
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String ConfigIdentifier::GetName(void) const
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{
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return m_Name;
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}
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