Humungous refactor

lib/nod.cpp

@@ -0,0 +1,74 @@
+#include <stdio.h>
+#include "nod/nod.hpp"
+#include "nod/DiscBase.hpp"
+
+namespace nod
+{
+
+logvisor::Module LogModule("nod");
+
+std::unique_ptr<IDiscIO> NewDiscIOISO(const SystemChar* path);
+std::unique_ptr<IDiscIO> NewDiscIOWBFS(const SystemChar* path);
+
+std::unique_ptr<DiscBase> OpenDiscFromImage(const SystemChar* path, bool& isWii)
+{
+    /* Temporary file handle to determine image type */
+    std::unique_ptr<IFileIO> fio = NewFileIO(path);
+    if (!fio->exists())
+    {
+        LogModule.report(logvisor::Error, _S("Unable to open '%s'"), path);
+        return std::unique_ptr<DiscBase>();
+    }
+    std::unique_ptr<IFileIO::IReadStream> rs = fio->beginReadStream();
+
+    isWii = false;
+    std::unique_ptr<IDiscIO> discIO;
+    uint32_t magic = 0;
+    if (rs->read(&magic, 4) != 4)
+        LogModule.report(logvisor::Fatal, _S("Unable to read magic from '%s'"), path);
+
+    if (magic == nod::SBig((uint32_t)'WBFS'))
+    {
+        discIO = NewDiscIOWBFS(path);
+        isWii = true;
+    }
+    else
+    {
+        rs->seek(0x18, SEEK_SET);
+        rs->read(&magic, 4);
+        magic = nod::SBig(magic);
+        if (magic == 0x5D1C9EA3)
+        {
+            discIO = NewDiscIOISO(path);
+            isWii = true;
+        }
+        else
+        {
+            rs->read(&magic, 4);
+            magic = nod::SBig(magic);
+            if (magic == 0xC2339F3D)
+                discIO = NewDiscIOISO(path);
+        }
+    }
+
+    if (!discIO)
+    {
+        LogModule.report(logvisor::Error, _S("'%s' is not a valid image"), path);
+        return std::unique_ptr<DiscBase>();
+    }
+
+    if (isWii)
+        return std::unique_ptr<DiscBase>(new DiscWii(std::move(discIO)));
+
+    return std::unique_ptr<DiscBase>(new DiscGCN(std::move(discIO)));
+
+}
+
+std::unique_ptr<DiscBase> OpenDiscFromImage(const SystemChar* path)
+{
+    bool isWii;
+    return OpenDiscFromImage(path, isWii);
+}
+
+}
+