compressing a file

[bowlofred]

So you want to read an uncompressed source file and compress it, but did not want the compression to be done in memory? Where did you want the compression to occur?

I interpreted the question as wanting to compress it, but read the data as a stream so the entire file is not in memory at one time. The docs suggested to me that compressing a single object is simple, but if you wanted a stream compressor, that's not explicitly shown.

I would assume there's some way to chain the blockIO devices so you could read() the compression results (rather than direct it to a file on disk), but wasn't sure how to accomplish that.