Initial commit

engines/grim/lua/lzio.h

@@ -0,0 +1,47 @@
+/*
+** Buffered streams
+** See Copyright Notice in lua.h
+*/
+
+
+#ifndef GRIM_LZIO_H
+#define GRIM_LZIO_H
+
+#include "common/scummsys.h"
+
+namespace Common {
+	class File;
+}
+
+namespace Grim {
+
+// For Lua only
+#define zopen   luaZ_mopen
+
+#define EOZ     (-1)                    // end of stream
+
+typedef struct zio ZIO;
+
+ZIO *zopen(ZIO *z, const char *b, int32 size, const char *name);
+int32 zread(ZIO *z, void *b, int32 n);  // read next n bytes
+int32 zgeteoz(ZIO *);
+
+#define zgetc(z)        (--(z)->n >= 0 ? ((int32)*(z)->p++): zgeteoz(z))
+#define zungetc(z)      (++(z)->n, --(z)->p)
+#define zname(z)        ((z)->name)
+
+
+// --------- Private Part ------------------
+
+#define ZBSIZE  256                     // buffer size
+
+struct zio {
+	int32 n;                        // bytes still unread
+	const byte *p;                  // current position in buffer
+	const char *name;
+	byte buffer[ZBSIZE];            // buffer
+};
+
+} // end of namespace Grim
+
+#endif