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/*
* PakLoader.cpp, part of VCMI engine
*
* Authors: listed in file AUTHORS in main folder
*
* License: GNU General Public License v2.0 or later
* Full text of license available in license.txt file, in main folder
*
*/
#include "StdInc.h"
#include "PakLoader.h"
#include "../../../lib/filesystem/Filesystem.h"
#include "../../../lib/filesystem/CBinaryReader.h"
std::vector<std::vector<std::string>> stringtoTable(const std::string& input)
{
std::vector<std::vector<std::string>> result;
std::vector<std::string> lines;
boost::split(lines, input, boost::is_any_of("\n"));
for(auto& line : lines)
{
boost::trim(line);
if(line.empty())
continue;
std::vector<std::string> tokens;
boost::split(tokens, line, boost::is_any_of(" "), boost::token_compress_on);
result.push_back(tokens);
}
return result;
}
bool endsWithAny(const std::string & s, const std::unordered_set<std::string> & suffixes)
{
for(const auto & suf : suffixes)
if(boost::algorithm::ends_with(s, suf))
return true;
return false;
}
void PakLoader::loadPak(ResourcePath path, int scale, std::unordered_set<std::string> animToSkip, std::unordered_set<std::string> imagesToSkip, std::unordered_set<std::string> suffixesToSkip)
{
auto file = CResourceHandler::get()->load(path);
CBinaryReader reader(file.get());
std::vector<ArchiveEntry> archiveEntries;
[[maybe_unused]] uint32_t magic = reader.readUInt32();
uint32_t headerOffset = reader.readUInt32();
assert(magic == 4);
file->seek(headerOffset);
uint32_t entriesCount = reader.readUInt32();
for(uint32_t i = 0; i < entriesCount; ++i)
{
ArchiveEntry entry;
std::string buf(20, '\0');
reader.read(reinterpret_cast<ui8*>(buf.data()), buf.size());
size_t len = buf.find('\0');
std::string s = buf.substr(0, len);
entry.name = boost::algorithm::to_upper_copy(s);
entry.metadataOffset = reader.readUInt32();
entry.metadataSize = reader.readUInt32();
entry.countSheets = reader.readUInt32();
entry.compressedSize = reader.readUInt32();
entry.fullSize = reader.readUInt32();
entry.sheets.resize(entry.countSheets);
for(uint32_t j = 0; j < entry.countSheets; ++j)
entry.sheets[j].compressedSize = reader.readUInt32();
for(uint32_t j = 0; j < entry.countSheets; ++j)
entry.sheets[j].fullSize = reader.readUInt32();
entry.scale = scale;
if(animToSkip.find(entry.name) == animToSkip.end() && !endsWithAny(entry.name, suffixesToSkip))
archiveEntries.push_back(entry);
}
for(auto & entry : archiveEntries)
{
file->seek(entry.metadataOffset);
std::string buf(entry.metadataSize, '\0');
reader.read(reinterpret_cast<ui8*>(buf.data()), buf.size());
size_t len = buf.find('\0');
std::string data = buf.substr(0, len);
auto table = stringtoTable(data);
for(const auto & sheet : entry.sheets)
reader.skip(sheet.compressedSize);
ImageEntry image;
for(const auto & line : table)
{
assert(line.size() == 12 || line.size() == 18);
image.name = boost::algorithm::to_upper_copy(line[0]);
image.sheetIndex = std::stol(line[1]);
image.spriteOffsetX = std::stol(line[2]);
image.unknown1 = std::stol(line[3]);
image.spriteOffsetY = std::stol(line[4]);
image.unknown2 = std::stol(line[5]);
image.sheetOffsetX = std::stol(line[6]);
image.sheetOffsetY = std::stol(line[7]);
image.width = std::stol(line[8]);
image.height = std::stol(line[9]);
image.rotation = std::stol(line[10]);
image.hasShadow = std::stol(line[11]);
assert(image.rotation == 0 || image.rotation == 1);
if(image.hasShadow)
{
image.shadowSheetIndex = std::stol(line[12]);
image.shadowSheetOffsetX = std::stol(line[13]);
image.shadowSheetOffsetY = std::stol(line[14]);
image.shadowWidth = std::stol(line[15]);
image.shadowHeight = std::stol(line[16]);
image.shadowRotation = std::stol(line[17]);
assert(image.shadowRotation == 0 || image.shadowRotation == 1);
}
if(imagesToSkip.find(image.name) == imagesToSkip.end() && !endsWithAny(image.name, suffixesToSkip))
entry.images.push_back(image);
}
}
content[path] = archiveEntries;
// Build indices for fast lookup
for(auto& entry : content[path])
{
for(auto& image : entry.images)
imagesByName[scale].try_emplace(image.name, path, &image, &entry);
}
}
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