DataFileInput: Tango Issue 0.9.8

tomni Joined: 08/25/08 Posts: 30

Posted: 03/20/09 18:44:42 Hi Everybody latetely I upgraded to the recent trunk version of Tango. No I'm struggling with the new DataFileInput? module in order to set a buffer size I need. In Tango v0.9.7 you could set the buffer size of a seekable stream with the second parameter. 1. Tango 0.9.7 auto data = new DataFileInput?(file, buffer_size); 2. Tango Trunk auto data = new DataFileInput?(file); In the latest trunk version this isnt possible anymore. Now I'm receiving this error indicating that the buffer is too small: BufferedInput?.next :: input buffer is full tango.core.Exception.IOException: BufferedInput?.next :: input buffer is full Does anybody knows how to increase the buffer size of DataFileInput? with the latest version of tango from the trunk (0.9.8)? Cheers.

Author	Message
kris Joined: 03/27/04 Posts: 581	Posted: 03/20/09 20:15:52 You can explicitly insert a BufferedInput instance between the DataFileInput and the file conduit. For example: auto input = new DataFileInput(new BufferedInput(file, myBufferSize)); The creation of an input buffer is done behind the scenes if you don't provide one, using the default buffersize for the input source (typically 16K for a file). By explicitly wrapping the stream source in a buffer (with a size of your choosing) you inhibit that default behavior.
tomni Joined: 08/25/08 Posts: 30	Posted: 03/21/09 13:44:35 Hey Kris, awesome. Thx for the help!
tomni Joined: 08/25/08 Posts: 30	Posted: 03/22/09 14:31:09 -- Modified: 03/22/09 16:21:14 by tomni -- Modified 4 Times Well sorry again, but Kris this doesnt works. DataFileInput? just provides two constructor options 1. this (File file) 2. this (char[] path, File.Style style = File.ReadExisting?) Using auto input = new DataFileInput?(new BufferedInput?(file, buffer_size)); produces /workspace/dproject/src/test.d(95): constructor tango.io.stream.DataFile?.DataFileInput?.this (char[],Style) does not match parameter types (BufferedInput?) /workspace/dproject/src/test.d(95): Error: cannot implicitly convert expression (new BufferedInput?(cast(InputStream?)(file),buffer_size)) of type tango.io.stream.Buffered.BufferedInput? to tango.io.device.File.File I think its just not yet moved from the old tango 0.99.7 code base to tango trunk right? Shouldn't there be a constructor like: this (BufferInput? buf) Any help appreciated! Thx, Tom.
tomni Joined: 08/25/08 Posts: 30	Posted: 03/22/09 16:09:52 -- Modified: 03/22/09 16:37:28 by tomni -- Modified 3 Times OK, I think it got lost. I'm writing a ticket. --- Tango 0.99.7 [tango.io.stream.DataFile?]: this (FileConduit? file, uint buffer=uint.max, bool flip=false) { super (conduit = file, buffer, flip); } --- Tango 0.99.8 [tango.io.stream.DataFileStream?]: this (File file) { super (conduit = file); } --- What it should be I guess into Tango 0.99.8 this (File file, uint buffer=uint.max) { super (conduit = file, buffer); } --- Any Ideas?
kris Joined: 03/27/04 Posts: 581	Posted: 03/22/09 21:42:30 Whoops, sorry. This is what I should have written: auto input = new DataInput (new BufferedInput(new File("myfile"), myBufferSize));
tomni Joined: 08/25/08 Posts: 30	Posted: 03/23/09 11:19:25 -- Modified: 03/23/09 11:33:23 by tomni -- Modified 2 Times OK! Looks like you can do a seek on DataInput?! Thx. That was the missing point.