using System; using System.Runtime.InteropServices; namespace SharpPhysFS { public sealed partial class PhysFS { internal static class LowLevel { public static IntPtr OpenWrite(string filename, PhysFS physFS) { var val = Interop.PHYSFS_openWrite(filename); if (val == null) throw new PhysFSException(physFS); return val; } public static IntPtr OpenAppend(string filename, PhysFS physFS) { var val = Interop.PHYSFS_openAppend(filename); if (val == null) throw new PhysFSException(physFS); return val; } public static IntPtr OpenRead(string filename, PhysFS physFS) { var val = Interop.PHYSFS_openRead(filename); if (val == null) throw new PhysFSException(physFS); return val; } public static void Close(IntPtr file, PhysFS physFS) { int err = Interop.PHYSFS_close(file); physFS.ThrowException(err); } public static long Read(IntPtr file, byte[] buffer, uint objSize, uint objCount, int offset) { if (buffer.Length < (objSize * objCount) + offset) { throw new InvalidOperationException("Buffer too small"); } var handle = GCHandle.Alloc(buffer, GCHandleType.Pinned); long ret = Interop.PHYSFS_read(file, IntPtr.Add(handle.AddrOfPinnedObject(), offset), 1, objCount); handle.Free(); return ret; } public static long Write(IntPtr file, byte[] buffer, uint objSize, uint objCount) { unsafe { fixed (void* ptr = buffer) { return Interop.PHYSFS_write(file, (IntPtr)ptr, objSize, objCount); } } } public static bool EOF(IntPtr file) { return Interop.PHYSFS_eof(file) != 0; } public static long Tell(IntPtr file) { return Interop.PHYSFS_tell(file); } public static void Seek(IntPtr file, ulong pos, PhysFS physFS) { int err = Interop.PHYSFS_seek(file, pos); physFS.ThrowException(err); } public static long FileLength(IntPtr file) { return Interop.PHYSFS_fileLength(file); } public static void SetBuffer(IntPtr file, ulong bufSize, PhysFS physFS) { int err = Interop.PHYSFS_setBuffer(file, bufSize); physFS.ThrowException(err); } public static void Flush(IntPtr file, PhysFS physFS) { int err = Interop.PHYSFS_flush(file); physFS.ThrowException(err); } } } }