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#include "config_parser.hpp"
#include <algorithm>
#include <fstream>
#include <list>
#include <phosphor-logging/log.hpp>
#include <regex>
#include <string>
#include <unordered_map>
namespace phosphor
{
namespace network
{
namespace config
{
using namespace phosphor::logging;
Parser::Parser(const fs::path& filePath)
{
setFile(filePath);
}
std::tuple<ReturnCode, KeyValueMap>
Parser::getSection(const std::string& section)
{
auto it = sections.find(section);
if (it == sections.end())
{
KeyValueMap keyValues;
return std::make_tuple(ReturnCode::SECTION_NOT_FOUND,
std::move(keyValues));
}
return std::make_tuple(ReturnCode::SUCCESS, it->second);
}
std::tuple<ReturnCode, ValueList> Parser::getValues(const std::string& section,
const std::string& key)
{
ValueList values;
KeyValueMap keyValues{};
auto rc = ReturnCode::SUCCESS;
std::tie(rc, keyValues) = getSection(section);
if (rc != ReturnCode::SUCCESS)
{
return std::make_tuple(rc, std::move(values));
}
auto it = keyValues.find(key);
if (it == keyValues.end())
{
return std::make_tuple(ReturnCode::KEY_NOT_FOUND, std::move(values));
}
for (; it != keyValues.end() && key == it->first; it++)
{
values.push_back(it->second);
}
return std::make_tuple(ReturnCode::SUCCESS, std::move(values));
}
bool Parser::isValueExist(const std::string& section, const std::string& key,
const std::string& value)
{
auto rc = ReturnCode::SUCCESS;
ValueList values;
std::tie(rc, values) = getValues(section, key);
if (rc != ReturnCode::SUCCESS)
{
return false;
}
auto it = std::find(values.begin(), values.end(), value);
return it != std::end(values) ? true : false;
}
void Parser::setValue(const std::string& section, const std::string& key,
const std::string& value)
{
KeyValueMap values;
auto it = sections.find(section);
if (it != sections.end())
{
values = std::move(it->second);
}
values.insert(std::make_pair(key, value));
if (it != sections.end())
{
it->second = std::move(values);
}
else
{
sections.insert(std::make_pair(section, std::move(values)));
}
}
#if 0
void Parser::print()
{
for (auto section : sections)
{
std::cout << "[" << section.first << "]\n\n";
for (auto keyValue : section.second)
{
std::cout << keyValue.first << "=" << keyValue.second << "\n";
}
}
}
#endif
void Parser::setFile(const fs::path& filePath)
{
this->filePath = filePath;
std::fstream stream;
stream.open(filePath.string(), std::fstream::in);
if (!stream.is_open())
{
return;
}
// clear all the section data.
sections.clear();
parse(stream);
stream.close();
}
void Parser::parse(std::istream& in)
{
static const std::regex commentRegex{R"x(\s*[;#])x"};
static const std::regex sectionRegex{R"x(\s*\[([^\]]+)\])x"};
static const std::regex valueRegex{R"x(\s*(\S[^ \t=]*)\s*=\s*(\S+)\s*$)x"};
std::string section;
std::smatch pieces;
for (std::string line; std::getline(in, line);)
{
if (line.empty() || std::regex_match(line, pieces, commentRegex))
{
// skip comment lines and blank lines
}
else if (std::regex_match(line, pieces, sectionRegex))
{
if (pieces.size() == 2)
{
section = pieces[1].str();
}
}
else if (std::regex_match(line, pieces, valueRegex))
{
if (pieces.size() == 3)
{
setValue(section, pieces[1].str(), pieces[2].str());
}
}
}
}
} // namespace config
} // namespace network
} // namespace phosphor
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