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/* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */
#include "base/configwriter.hpp"
#include "base/exception.hpp"
#include <boost/regex.hpp>
#include <boost/algorithm/string/replace.hpp>
#include <set>
#include <iterator>
using namespace icinga;
void ConfigWriter::EmitBoolean(std::ostream& fp, bool val)
{
fp << (val ? "true" : "false");
}
void ConfigWriter::EmitNumber(std::ostream& fp, double val)
{
fp << std::fixed << val;
}
void ConfigWriter::EmitString(std::ostream& fp, const String& val)
{
fp << "\"" << EscapeIcingaString(val) << "\"";
}
void ConfigWriter::EmitEmpty(std::ostream& fp)
{
fp << "null";
}
void ConfigWriter::EmitArray(std::ostream& fp, int indentLevel, const Array::Ptr& val)
{
fp << "[ ";
EmitArrayItems(fp, indentLevel, val);
if (val->GetLength() > 0)
fp << " ";
fp << "]";
}
void ConfigWriter::EmitArrayItems(std::ostream& fp, int indentLevel, const Array::Ptr& val)
{
bool first = true;
ObjectLock olock(val);
for (const Value& item : val) {
if (first)
first = false;
else
fp << ", ";
EmitValue(fp, indentLevel, item);
}
}
void ConfigWriter::EmitScope(std::ostream& fp, int indentLevel, const Dictionary::Ptr& val,
const Array::Ptr& imports, bool splitDot)
{
fp << "{";
if (imports && imports->GetLength() > 0) {
ObjectLock xlock(imports);
for (const Value& import : imports) {
fp << "\n";
EmitIndent(fp, indentLevel);
fp << "import \"" << import << "\"";
}
fp << "\n";
}
if (val) {
ObjectLock olock(val);
for (const Dictionary::Pair& kv : val) {
fp << "\n";
EmitIndent(fp, indentLevel);
if (splitDot) {
std::vector<String> tokens = kv.first.Split(".");
EmitIdentifier(fp, tokens[0], true);
for (std::vector<String>::size_type i = 1; i < tokens.size(); i++) {
fp << "[";
EmitString(fp, tokens[i]);
fp << "]";
}
} else
EmitIdentifier(fp, kv.first, true);
fp << " = ";
EmitValue(fp, indentLevel + 1, kv.second);
}
}
fp << "\n";
EmitIndent(fp, indentLevel - 1);
fp << "}";
}
void ConfigWriter::EmitValue(std::ostream& fp, int indentLevel, const Value& val)
{
if (val.IsObjectType<Array>())
EmitArray(fp, indentLevel, val);
else if (val.IsObjectType<Dictionary>())
EmitScope(fp, indentLevel, val);
else if (val.IsObjectType<ConfigIdentifier>())
EmitIdentifier(fp, static_cast<ConfigIdentifier::Ptr>(val)->GetName(), false);
else if (val.IsString())
EmitString(fp, val);
else if (val.IsNumber())
EmitNumber(fp, val);
else if (val.IsBoolean())
EmitBoolean(fp, val);
else if (val.IsEmpty())
EmitEmpty(fp);
}
void ConfigWriter::EmitRaw(std::ostream& fp, const String& val)
{
fp << val;
}
void ConfigWriter::EmitIndent(std::ostream& fp, int indentLevel)
{
for (int i = 0; i < indentLevel; i++)
fp << "\t";
}
void ConfigWriter::EmitIdentifier(std::ostream& fp, const String& identifier, bool inAssignment)
{
static std::set<String> keywords;
static std::mutex mutex;
{
std::unique_lock<std::mutex> lock(mutex);
if (keywords.empty()) {
const std::vector<String>& vkeywords = GetKeywords();
std::copy(vkeywords.begin(), vkeywords.end(), std::inserter(keywords, keywords.begin()));
}
}
if (keywords.find(identifier) != keywords.end()) {
fp << "@" << identifier;
return;
}
boost::regex expr("^[a-zA-Z_][a-zA-Z0-9\\_]*$");
boost::smatch what;
if (boost::regex_search(identifier.GetData(), what, expr))
fp << identifier;
else if (inAssignment)
EmitString(fp, identifier);
else
BOOST_THROW_EXCEPTION(std::invalid_argument("Invalid identifier"));
}
void ConfigWriter::EmitConfigItem(std::ostream& fp, const String& type, const String& name, bool isTemplate,
bool ignoreOnError, const Array::Ptr& imports, const Dictionary::Ptr& attrs)
{
if (isTemplate)
fp << "template ";
else
fp << "object ";
EmitIdentifier(fp, type, false);
fp << " ";
EmitString(fp, name);
if (ignoreOnError)
fp << " ignore_on_error";
fp << " ";
EmitScope(fp, 1, attrs, imports, true);
}
void ConfigWriter::EmitComment(std::ostream& fp, const String& text)
{
fp << "/* " << text << " */\n";
}
void ConfigWriter::EmitFunctionCall(std::ostream& fp, const String& name, const Array::Ptr& arguments)
{
EmitIdentifier(fp, name, false);
fp << "(";
EmitArrayItems(fp, 0, arguments);
fp << ")";
}
String ConfigWriter::EscapeIcingaString(const String& str)
{
String result = str;
boost::algorithm::replace_all(result, "\\", "\\\\");
boost::algorithm::replace_all(result, "\n", "\\n");
boost::algorithm::replace_all(result, "\t", "\\t");
boost::algorithm::replace_all(result, "\r", "\\r");
boost::algorithm::replace_all(result, "\b", "\\b");
boost::algorithm::replace_all(result, "\f", "\\f");
boost::algorithm::replace_all(result, "\"", "\\\"");
return result;
}
const std::vector<String>& ConfigWriter::GetKeywords()
{
static std::vector<String> keywords;
static std::mutex mutex;
std::unique_lock<std::mutex> lock(mutex);
if (keywords.empty()) {
keywords.emplace_back("object");
keywords.emplace_back("template");
keywords.emplace_back("include");
keywords.emplace_back("include_recursive");
keywords.emplace_back("include_zones");
keywords.emplace_back("library");
keywords.emplace_back("null");
keywords.emplace_back("true");
keywords.emplace_back("false");
keywords.emplace_back("const");
keywords.emplace_back("var");
keywords.emplace_back("this");
keywords.emplace_back("globals");
keywords.emplace_back("locals");
keywords.emplace_back("use");
keywords.emplace_back("using");
keywords.emplace_back("namespace");
keywords.emplace_back("default");
keywords.emplace_back("ignore_on_error");
keywords.emplace_back("current_filename");
keywords.emplace_back("current_line");
keywords.emplace_back("apply");
keywords.emplace_back("to");
keywords.emplace_back("where");
keywords.emplace_back("import");
keywords.emplace_back("assign");
keywords.emplace_back("ignore");
keywords.emplace_back("function");
keywords.emplace_back("return");
keywords.emplace_back("break");
keywords.emplace_back("continue");
keywords.emplace_back("for");
keywords.emplace_back("if");
keywords.emplace_back("else");
keywords.emplace_back("while");
keywords.emplace_back("throw");
keywords.emplace_back("try");
keywords.emplace_back("except");
}
return keywords;
}
ConfigIdentifier::ConfigIdentifier(String identifier)
: m_Name(std::move(identifier))
{ }
String ConfigIdentifier::GetName() const
{
return m_Name;
}
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