All CResLoader methods in-place

Runtime/IOStreams.cpp

@@ -0,0 +1,49 @@
+#include "IOStreams.hpp"
+#include "CMemory.hpp"
+
+namespace Retro
+{
+
+class CZipSupport
+{
+public:
+    static void* Alloc(void*, u32 c, u32 n)
+    {
+        return NEWA(u8, c*n);
+    }
+    static void Free(void*, void* buf)
+    {
+        delete[] static_cast<u8*>(buf);
+    }
+};
+
+CZipInputStream::CZipInputStream(std::unique_ptr<CInputStream>&& strm)
+: x24_compBuf(NEWA(u8, 4096)), x28_strm(std::move(strm))
+{
+    x30_zstrm.next_in = x24_compBuf.get();
+    x30_zstrm.avail_in = 0;
+    x30_zstrm.zalloc = CZipSupport::Alloc;
+    x30_zstrm.zfree = CZipSupport::Free;
+    inflateInit(&x30_zstrm);
+}
+
+CZipInputStream::~CZipInputStream()
+{
+    inflateEnd(&x30_zstrm);
+}
+
+atUint64 CZipInputStream::readUBytesToBuf(void *buf, atUint64 len)
+{
+    x30_zstrm.next_out = (Bytef*)buf;
+    x30_zstrm.avail_out = len;
+    if (!x30_zstrm.avail_in)
+    {
+        atUint64 readSz = x28_strm->readUBytesToBuf(x24_compBuf.get(), 4096);
+        x30_zstrm.avail_in = readSz;
+        x30_zstrm.next_in = x24_compBuf.get();
+    }
+    inflate(&x30_zstrm, Z_NO_FLUSH);
+    return x30_zstrm.total_out;
+}
+
+}