Setup libzippp archive loading

source/gMod_FileLoader.cpp

@@ -0,0 +1,71 @@
+#include "../header/gMod_FileLoader.h"
+#include <filesystem>
+
+gMod_FileLoader::gMod_FileLoader(const std::string& fileName) {
+    _fileName = std::filesystem::absolute(fileName).string();
+    _stream = std::ifstream(_fileName, std::ios::binary);
+    loaded = false;
+    if (!_stream) {
+        throw std::runtime_error("Failed to open file: " + _fileName);
+    }
+}
+
+std::vector<TpfEntry> gMod_FileLoader::Load() {
+    if (!loaded) {
+        entryCache = GetContents();
+        loaded = true;
+    }
+
+    return entryCache;
+}
+
+std::vector<TpfEntry> gMod_FileLoader::GetContents() {
+    if (_fileName.ends_with(".tpf")) {
+        return GetTpfContents();
+    }
+    else {
+        return GetFileContents();
+    }
+}
+
+std::vector<TpfEntry> gMod_FileLoader::GetTpfContents() {
+    std::vector<TpfEntry> entries;
+    try {
+        // Open the zip file using libzippp
+        libzippp::ZipArchive zipArchive(_fileName, encodedPassword);
+        zipArchive.open(); //ReadOnly and no consistency checks
+        LoadEntries(zipArchive, entries);
+    }
+    catch (const std::exception& e) {
+        throw std::runtime_error("Failed to open zip file: " + _fileName);
+    }
+
+    return entries;
+}
+
+std::vector<TpfEntry> gMod_FileLoader::GetFileContents() {
+    std::vector<TpfEntry> entries;
+
+    try {
+        // Open the zip file using libzippp
+        libzippp::ZipArchive zipArchive(_fileName);
+        zipArchive.open();
+        LoadEntries(zipArchive, entries);
+    }
+    catch (const std::exception& e) {
+        throw std::runtime_error("Failed to open zip file: " + _fileName);
+    }
+
+    return entries;
+}
+
+void gMod_FileLoader::LoadEntries(libzippp::ZipArchive& archive, std::vector<TpfEntry>& entries) {
+    // Iterate over the files in the zip archive
+    for (const auto& entry : archive.getEntries()) {
+        if (entry.isFile()) {
+            const auto dataPtr = entry.readAsBinary();
+            const auto size = entry.getSize();
+            entries.push_back({ entry.getName(), entry.getName(), 0, dataPtr, size }); // Assuming ZipEntry is a string
+        }
+    }
+}