AttrListFile.cpp

//
// Created by nmill on 10/13/2023.
//
 
#include "AttrListFile.h"
#include <string>
#include <fstream>
#include "../parse_error.h"
#include "../invalid_odb_error.h"
#include "Logger.h"
#include "str_utils.h"
#include "../../Constants.h"
#include <ArchiveExtractor.h>
 
namespace Odb::Lib::FileModel::Design
{
    AttrListFile::AttrListFile()
        : m_directory("")
        , m_path("")
        , m_units("")
    {
    }
 
    std::string AttrListFile::GetUnits() const
    {
        return m_units;
    }
 
    const AttrListFile::AttributeMap& AttrListFile::GetAttributes() const
    {
        return m_attributesByName;
    }
 
    bool Lib::FileModel::Design::AttrListFile::Parse(std::filesystem::path directory)
    {
        std::ifstream attrListFile;
        int lineNumber = 0;
        std::string line;
 
        try
        {
            m_directory = directory;
 
            loginfo("checking for extraction...");
 
            std::filesystem::path attrListFilePath;
            for (const std::string attrListFilename : ATTRLIST_FILENAMES)
            {
                loginfo("trying attrlist file: [" + attrListFilename + "]...");
 
                attrListFilePath = Utils::ArchiveExtractor::getUncompressedFilePath(m_directory, attrListFilename);
                if (exists(attrListFilePath) && is_regular_file(attrListFilePath))
                {
                    loginfo("found attrlist file: [" + attrListFilePath.string() + "]");
                    break;
                }
            }
 
            m_path = attrListFilePath;
 
            loginfo("any extraction complete, parsing data...");
 
            if (!std::filesystem::exists(m_path))
            {
                auto message = "attrlist file does not exist: [" + m_directory.string() + "]";
                logwarn(message);
                return true;
                //throw invalid_odb_error(message.c_str());
            }
            else if (!std::filesystem::is_regular_file(m_path))
            {
                auto message = "attrlist is not a file: [" + m_path.string() + "]";
                throw invalid_odb_error(message.c_str());
            }
 
            attrListFile.open(m_path.string(), std::ios::in);
            if (!attrListFile.is_open())
            {
                auto message = "unable to open attrlist file: [" + m_path.string() + "]";
                throw invalid_odb_error(message.c_str());
            }
            
            while (std::getline(attrListFile, line))
            {
                lineNumber++;
 
                // trim whitespace from beginning and end of line
                Utils::str_trim(line);
                if (!line.empty())
                {
                    std::stringstream lineStream(line);
                    //char firstChar = line[0];         
 
                    if (line.find(Constants::COMMENT_TOKEN) == 0)
                    {
                        // comment line
                    }
                    else if (line.find(Constants::UNITS_TOKEN) == 0)
                    {
                        // units line
                        std::string token;
                        if (!std::getline(lineStream, token, '='))
                        {
                            throw_parse_error(m_path, line, token, lineNumber);
                        }
                        else if (!std::getline(lineStream, token, '='))
                        {
                            throw_parse_error(m_path, line, token, lineNumber);
                        }
 
                        m_units = token;
                    }
                    else
                    {
                        // attribute line
                        std::string attribute;
                        std::string value;
 
                        if (!std::getline(lineStream, attribute, '='))
                        {
                            throw_parse_error(m_path, line, "", lineNumber);
                        }
 
                        if (!std::getline(lineStream, value))
                        {
                            if (!attributeValueIsOptional(attribute))
                            {
                                logwarn("attrlist file: no value for non-optional attribute: " + attribute);
                            }
 
                        }
 
                        Utils::str_trim(attribute);
                        Utils::str_trim(value);
 
                        m_attributesByName[attribute] = value;
                    }
                }
            }           
 
            attrListFile.close();
        }
        catch (parse_error& pe)
        {
            auto m = pe.toString("Parse Error:");
            logerror(m);
            attrListFile.close();
            throw pe;
        }
        catch (std::exception& e)
        {
            parse_info pi(m_path, line, lineNumber);
            const auto m = pi.toString();
            logexception_msg(e, m);
            attrListFile.close();
            throw e;
        }
 
        return true;
    }
 
    std::unique_ptr<Odb::Lib::Protobuf::AttrListFile> Lib::FileModel::Design::AttrListFile::to_protobuf() const
    {
        auto message = std::make_unique<Odb::Lib::Protobuf::AttrListFile>();
 
        message->set_directory(m_directory.string());
        message->set_path(m_path.string());
        message->set_units(m_units);
 
        for (const auto& kvAttribute : m_attributesByName)
        {
            (*message->mutable_attributesbyname())[kvAttribute.first] = kvAttribute.second;
        }
 
        return message;
    
    }
 
    void Lib::FileModel::Design::AttrListFile::from_protobuf(const Odb::Lib::Protobuf::AttrListFile& message)
    {
        m_directory = message.directory();
        m_path = message.path();
        m_units = message.units();
 
        for (const auto& kvAttribute : message.attributesbyname())
        {
            m_attributesByName[kvAttribute.first] = kvAttribute.second;
        }
    }
 
    bool Lib::FileModel::Design::AttrListFile::attributeValueIsOptional(const std::string& attributeName) const
    {
        //for (const auto& optionalAttribute : OPTIONAL_ATTRIBUTES)
        //{
        //  if (attributeName == optionalAttribute)
        //  {
        //      return true;
        //  }
        //}
        //return false;
 
        // all atrributes are "optional", i.e. value is not required
        return true;
    }
 
    bool AttrListFile::Save(std::ostream& os)
    {
        os << Constants::UNITS_TOKEN << " = " << m_units << std::endl;
        for (const auto& kvAttribute : m_attributesByName)
        {
            os << kvAttribute.first << " = " << kvAttribute.second << std::endl;
        }
 
        return true;
    }
} // namespace Odb::Lib::FileModel::Design