public LuaArgs open(LuaArgs args)
{
if (args.IsFunction(0))
{
// Open a function
var function = args.GetFunction(0);
var mode = args.IsNil(1) ? "r" : args.GetString(1);
if (mode == "r" || mode == "rb")
{
var stream = new LuaFunctionStream(function, LuaFileOpenMode.Read);
return(new LuaArgs(new LuaFile(stream, LuaFileOpenMode.Read)));
}
else if (mode == "w" || mode == "a" || mode == "wb" || mode == "ab")
{
var stream = new LuaFunctionStream(function, LuaFileOpenMode.Write);
return(new LuaArgs(new LuaFile(stream, LuaFileOpenMode.Write)));
}
else
{
throw new LuaError("Unsupported mode: " + mode);
}
}
else
{
// Open a file
var path = new FilePath(args.GetString(0));
var mode = args.IsNil(1) ? "r" : args.GetString(1);
try
{
if (mode == "r")
{
return(new LuaArgs(new LuaFile(m_fileSystem.OpenForRead(path))));
}
else if (mode == "rb")
{
return(new LuaArgs(new LuaFile(m_fileSystem.OpenForBinaryRead(path), LuaFileOpenMode.Read)));
}
else if (mode == "w")
{
return(new LuaArgs(new LuaFile(m_fileSystem.OpenForWrite(path, false))));
}
else if (mode == "wb")
{
return(new LuaArgs(new LuaFile(m_fileSystem.OpenForBinaryWrite(path, false), LuaFileOpenMode.Write)));
}
else if (mode == "a")
{
return(new LuaArgs(new LuaFile(m_fileSystem.OpenForWrite(path, true))));
}
else if (mode == "ab")
{
return(new LuaArgs(new LuaFile(m_fileSystem.OpenForBinaryWrite(path, true), LuaFileOpenMode.Write)));
}
else
{
throw new LuaError("Unsupported mode: " + mode);
}
}
catch (FileNotFoundException)
{
return(LuaArgs.Nil);
}
catch (IOException e)
{
throw new LuaError(e.Message);
}
}
}