lmu_reader.cpp

Go to the documentation of this file.

/*
 * This file is part of liblcf. Copyright (c) 2020 liblcf authors.
 * https://github.com/EasyRPG/liblcf - https://easyrpg.org
 *
 * liblcf is Free/Libre Open Source Software, released under the MIT License.
 * For the full copyright and license information, please view the COPYING
 * file that was distributed with this source code.
 */
 
#include <fstream>
#include <cerrno>
#include <cstring>
 
#include "lmu_reader.h"
#include "lmu_chunks.h"
#include "reader_lcf.h"
#include "reader_util.h"
#include "reader_struct.h"
 
void LMU_Reader::PrepareSave(RPG::Map& map) {
    ++map.save_count;
}
 
std::unique_ptr<RPG::Map> LMU_Reader::Load(const std::string& filename, const std::string& encoding) {
    std::ifstream stream(filename.c_str(), std::ios::binary);
    if (!stream.is_open()) {
        fprintf(stderr, "Failed to open LMU file `%s' for reading : %s\n", filename.c_str(), strerror(errno));
        return nullptr;
    }
    return LMU_Reader::Load(stream, encoding);
}
 
bool LMU_Reader::Save(const std::string& filename, const RPG::Map& save, const std::string& encoding, SaveOpt opt) {
    std::ofstream stream(filename.c_str(), std::ios::binary);
    if (!stream.is_open()) {
        fprintf(stderr, "Failed to open LMU file `%s' for writing : %s\n", filename.c_str(), strerror(errno));
        return false;
    }
    return LMU_Reader::Save(stream, save, encoding, opt);
}
 
bool LMU_Reader::SaveXml(const std::string& filename, const RPG::Map& save) {
    std::ofstream stream(filename.c_str(), std::ios::binary);
    if (!stream.is_open()) {
        fprintf(stderr, "Failed to open LMU XML file `%s' for writing : %s\n", filename.c_str(), strerror(errno));
        return false;
    }
    return LMU_Reader::SaveXml(stream, save);
}
 
std::unique_ptr<RPG::Map> LMU_Reader::LoadXml(const std::string& filename) {
    std::ifstream stream(filename.c_str(), std::ios::binary);
    if (!stream.is_open()) {
        fprintf(stderr, "Failed to open LMU XML file `%s' for reading : %s\n", filename.c_str(), strerror(errno));
        return nullptr;
    }
    return LMU_Reader::LoadXml(stream);
}
 
std::unique_ptr<RPG::Map> LMU_Reader::Load(std::istream& filestream, const std::string& encoding) {
    LcfReader reader(filestream, encoding);
    if (!reader.IsOk()) {
        LcfReader::SetError("Couldn't parse map file.\n");
        return std::unique_ptr<RPG::Map>();
    }
    std::string header;
    reader.ReadString(header, reader.ReadInt());
    if (header.length() != 10) {
        LcfReader::SetError("This is not a valid RPG2000 map.\n");
        return std::unique_ptr<RPG::Map>();
    }
    if (header != "LcfMapUnit") {
        fprintf(stderr, "Warning: This header is not LcfMapUnit and might not be a valid RPG2000 map.\n");
    }
 
    auto map = std::unique_ptr<RPG::Map>(new RPG::Map());
    map->lmu_header = std::move(header);
    Struct<RPG::Map>::ReadLcf(*map, reader);
    return map;
}
 
bool LMU_Reader::Save(std::ostream& filestream, const RPG::Map& map, const std::string& encoding, SaveOpt opt) {
    LcfWriter writer(filestream, encoding);
    if (!writer.IsOk()) {
        LcfReader::SetError("Couldn't parse map file.\n");
        return false;
    }
    std::string header;
    if ( map.lmu_header.empty() || !bool(opt & SaveOpt::ePreserveHeader)) {
        header = "LcfMapUnit";
    } else {
        header= map.lmu_header;
    }
    writer.WriteInt(header.size());
    writer.Write(header);
 
    Struct<RPG::Map>::WriteLcf(map, writer);
    return true;
}
 
bool LMU_Reader::SaveXml(std::ostream& filestream, const RPG::Map& map) {
    XmlWriter writer(filestream);
    if (!writer.IsOk()) {
        LcfReader::SetError("Couldn't parse map file.\n");
        return false;
    }
    writer.BeginElement("LMU");
    Struct<RPG::Map>::WriteXml(map, writer);
    writer.EndElement("LMU");
    return true;
}
 
std::unique_ptr<RPG::Map> LMU_Reader::LoadXml(std::istream& filestream) {
    XmlReader reader(filestream);
    if (!reader.IsOk()) {
        LcfReader::SetError("Couldn't parse map file.\n");
        return std::unique_ptr<RPG::Map>();
    }
 
    auto map = std::unique_ptr<RPG::Map>(new RPG::Map());
    reader.SetHandler(new RootXmlHandler<RPG::Map>(*map, "LMU"));
    reader.Parse();
    return map;
}