mirror of
https://github.com/RetroDECK/Duckstation.git
synced 2024-10-23 23:55:42 +00:00
186 lines
4.5 KiB
C++
186 lines
4.5 KiB
C++
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#include "game_list.h"
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#include "YBaseLib/CString.h"
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#include "YBaseLib/FileSystem.h"
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#include "YBaseLib/Log.h"
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#include "common/cd_image.h"
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#include "common/iso_reader.h"
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#include <algorithm>
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#include <cctype>
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#include <utility>
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Log_SetChannel(GameList);
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GameList::GameList() = default;
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GameList::~GameList() = default;
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std::string GameList::GetGameCodeForPath(const char* image_path)
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{
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std::unique_ptr<CDImage> cdi = CDImage::Open(image_path);
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if (!cdi)
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return {};
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return GetGameCodeForImage(cdi.get());
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}
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std::string GameList::GetGameCodeForImage(CDImage* cdi)
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{
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ISOReader iso;
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if (!iso.Open(cdi, 1))
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return {};
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// Read SYSTEM.CNF
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std::vector<u8> system_cnf_data;
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if (!iso.ReadFile("SYSTEM.CNF", &system_cnf_data))
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return {};
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// Parse lines
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std::vector<std::pair<std::string, std::string>> lines;
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std::pair<std::string, std::string> current_line;
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bool reading_value = false;
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for (size_t pos = 0; pos < system_cnf_data.size(); pos++)
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{
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const char ch = static_cast<char>(system_cnf_data[pos]);
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if (ch == '\r' || ch == '\n')
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{
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if (!current_line.first.empty())
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{
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lines.push_back(std::move(current_line));
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current_line = {};
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reading_value = false;
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}
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}
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else if (ch == ' ')
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{
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continue;
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}
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else if (ch == '=' && !reading_value)
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{
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reading_value = true;
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}
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else
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{
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if (reading_value)
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current_line.second.push_back(ch);
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else
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current_line.first.push_back(ch);
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}
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}
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if (!current_line.first.empty())
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lines.push_back(std::move(current_line));
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// Find the BOOT line
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auto iter =
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std::find_if(lines.begin(), lines.end(), [](const auto& it) { return Y_stricmp(it.first.c_str(), "boot") == 0; });
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if (iter == lines.end())
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return {};
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// cdrom:\SCES_123.45;1
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std::string code = iter->second;
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std::string::size_type pos = code.rfind('\\');
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if (pos == std::string::npos)
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return {};
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code.erase(0, pos + 1);
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pos = code.find(';');
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if (pos == std::string::npos)
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return {};
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code.erase(pos);
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// SCES_123.45 -> SCES-12345
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for (pos = 0; pos < code.size();)
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{
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if (code[pos] == '_')
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code[pos++] = '-';
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else if (code[pos] == '.')
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code.erase(pos, 1);
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else
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pos++;
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}
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return code;
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}
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std::optional<ConsoleRegion> GameList::GetRegionForCode(std::string_view code)
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{
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std::string prefix;
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for (size_t pos = 0; pos < code.length(); pos++)
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{
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const int ch = std::tolower(code[pos]);
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if (ch < 'a' || ch > 'z')
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break;
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prefix.push_back(static_cast<char>(ch));
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}
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// TODO: PAPX?
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if (prefix == "sces" || prefix == "sced" || prefix == "sles" || prefix == "sled")
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return ConsoleRegion::PAL;
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else if (prefix == "scps" || prefix == "scpd" || prefix == "slps" || prefix == "slpd")
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return ConsoleRegion::NTSC_J;
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else if (prefix == "scus" || prefix == "slus")
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return ConsoleRegion::NTSC_U;
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else
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return std::nullopt;
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}
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void GameList::AddDirectory(const char* path, bool recursive)
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{
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ScanDirectory(path, recursive);
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}
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bool GameList::GetGameListEntry(const char* path, GameListEntry* entry)
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{
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std::unique_ptr<CDImage> cdi = CDImage::Open(path);
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if (!cdi)
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return false;
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std::string game_code = GetGameCodeForImage(cdi.get());
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entry->path = path;
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entry->title = game_code;
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entry->code = game_code;
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entry->region = GetRegionForCode(game_code).value_or(ConsoleRegion::NTSC_U);
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return true;
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}
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void GameList::ScanDirectory(const char* path, bool recursive)
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{
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Log_DevPrintf("Scanning %s%s", path, recursive ? " (recursively)" : "");
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FileSystem::FindResultsArray files;
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FileSystem::FindFiles(path, "*", FILESYSTEM_FIND_FILES | FILESYSTEM_FIND_RECURSIVE, &files);
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GameListEntry entry;
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for (const FILESYSTEM_FIND_DATA& ffd : files)
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{
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Log_DebugPrintf("Trying '%s'...", ffd.FileName);
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// if this is a .bin, check if we have a .cue. if there is one, skip it
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const char* extension = std::strrchr(ffd.FileName, '.');
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if (extension && Y_stricmp(extension, ".bin") == 0)
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{
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#if 0
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std::string temp(ffd.FileName, extension - ffd.FileName);
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temp += ".cue";
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if (std::any_of(files.begin(), files.end(),
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[&temp](const FILESYSTEM_FIND_DATA& it) { return Y_stricmp(it.FileName, temp.c_str()) == 0; }))
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{
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Log_DebugPrintf("Skipping due to '%s' existing", temp.c_str());
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continue;
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}
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#else
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continue;
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#endif
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}
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// try opening the image
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if (GetGameListEntry(ffd.FileName, &entry))
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{
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m_entries.push_back(std::move(entry));
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entry = {};
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}
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}
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}
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