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support searching for more paths

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fixes #56
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PancakeTAS 2025-07-11 23:25:07 +02:00
parent bc481e65a5
commit dac149c84a
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1 changed files with 32 additions and 22 deletions
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54
src/extract/extract.cpp
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@ -3,6 +3,7 @@
#include <pe-parse/parse.h>
#include <cstdlib>
#include <filesystem>
#include <algorithm>
#include <cstdint>
#include <stdexcept>
@ -66,35 +67,44 @@ namespace {
shaders()[hash] = resource_data;
return 0;
}
const std::vector<std::filesystem::path> PATHS{{
".local/share/Steam/steamapps/common",
".steam/steam/steamapps/common",
".steam/debian-installation/steamapps/common",
".var/app/com.valvesoftware.Steam/.local/share/Steam/steamapps/common",
"snap/steam/common/.local/share/Steam/steamapps/common"
}};
std::string getDllPath() {
// overriden path
const char* dllPath = getenv("LSFG_DLL_PATH");
if (dllPath && *dllPath != '\0')
return{dllPath};
// home based paths
const char* home = getenv("HOME");
const std::string homeStr = home ? home : "";
for (const auto& base : PATHS) {
const std::filesystem::path path =
std::filesystem::path(homeStr) / base / "Lossless Scaling" / "Lossless.dll";
if (std::filesystem::exists(path))
return path.string();
}
// xdg home
const char* dataDir = getenv("XDG_DATA_HOME");
if (dataDir && *dataDir != '\0')
return std::string(dataDir) + "/Steam/steamapps/common/Lossless Scaling/Lossless.dll";
// final fallback
return "Lossless.dll";
}
}
void Extract::extractShaders() {
if (!shaders().empty())
return;
// find path to dll (absolutely beautiful code)
char* dllPath = getenv("LSFG_DLL_PATH");
std::string dllPathStr;
if (dllPath && *dllPath != '\0') {
dllPathStr = std::string(dllPath);
} else {
const char* dataDir = getenv("XDG_DATA_HOME");
if (dataDir && *dataDir != '\0') {
dllPathStr = std::string(dataDir) +
"/Steam/steamapps/common/Lossless Scaling/Lossless.dll";
} else {
const char* homeDir = getenv("HOME");
if (homeDir && *homeDir != '\0') {
dllPathStr = std::string(homeDir) +
"/.local/share/Steam/steamapps/common/Lossless Scaling/Lossless.dll";
} else {
dllPathStr = "Lossless.dll";
}
}
}
// parse the dll
peparse::parsed_pe* dll = peparse::ParsePEFromFile(dllPathStr.c_str());
peparse::parsed_pe* dll = peparse::ParsePEFromFile(getDllPath().c_str());
if (!dll)
throw std::runtime_error("Unable to read Lossless.dll, is it installed?");
peparse::IterRsrc(dll, on_resource, nullptr);