Purpose: To get TclX file functionality into the core. These will eventually become TIPs, so any comments or suggestions would be welcome now. Question: is it practical to push for this stuff to be included in the 8.5 release?
The -keepalive option should be added to fconfigure for sockets. Possibly other sockopts should be added to fconfigure too.
Changes to tcl's file command
A new file option -fileid to allow an open file to be processed in place of the file name argument. (This may not be possible under windows.)
- file truncate file for tclx's ftruncate
- file lock file for tclx's flock
- file unlock file for tclx's funlock
- file dup fd for tclx's dup
- file set fd fd ... not part of tclx, but would be nice ... [file set stderr [open /tmp/log a+]]]
- file pipe ?var_r ?var_w for tclx's pipe command.
- file isatty fd predicate returning true if fd is a tty.
Implementation Considerations
- The addition of -fileid semantics may be a fair bit of work
- Interactions with things like
- Should file be made into an actual ensemble command? Perhaps we're not far enough along with that yet.
- Can/Should file be moved off as a distinct module within tcl itself?
- Are the things named by fds refcounted? They'd have to be, if [file dup] and [file set] were to be implemented. It follows, then, that since TclX has dup, they are :)
See Also:
Category Suggestion