Re: Streams: Further considerations

On 04/10/02, "Sascha Schumann" <sascha@apache.org> wrote: > 1. Use fgetc in stream_gets for stdio stream ops > 2. Add file descriptor-based stream ops > 3. Redirect _php_stream_fopen_from_file/pipe to new stream > ops, if possible So, if fileno() returns a valid fd, we will use only read(2)/write(2), otherwise we will use fgetc()/fread()/fwrite(). The latter should be an extremely rare occurrence - should be for fopencookied or gnu memory based IO streams. > > The stdio buffering could be restored when the stream is cast > > for use by third-party libraries. > > I'm not sure what you are referring to -- do these libraries > make use of "FILE *" directly? Potentially, yes. One of the features of streams is that it allows an extension to access the underlying handle (fd, FILE * or whatever), and (to a limited extent) is able to synthesize/emulate the handle. The whole point is to allow the stream to be passed into libraries such as PDF, GD and others where the API is designed for a particular handle type. --Wez.