flexi-streams-announce

flexi-streams-announce@common-lisp.net

46 discussions

[flexi-streams-announce] New version 0.5.3 (Was: in-memory streams have no way to set external-format?)
by Edi Weitz 08 Mar '06

08 Mar '06

Hi! On Wed, 08 Mar 2006 00:43:12 +0100, Andreas Fuchs <asf(a)boinkor.net> wrote: > I would like to teach cl-irc about the goodness of external-formats, > and because irc doesn't let users specify which external format to > use, I need something as flexible as flexi-streams (-: > > So, once I've read an irc command (as a "line" of latin-1 > characters), I'd like to convert it to text that looks the least > insane, which is why my code tries several external-formats in a row > and returns as soon as it found one that doesn't throw an error: > > (defun try-decode-line (line external-formats) > (loop for external-format in external-formats > for decoded = nil > for error = nil > do (multiple-value-setq (decoded error) > (ignore-errors > (flexi-streams:with-input-from-sequence (in line) > (setf (flexi-streams:flexi-stream-external-format in) > external-format) > (read-line in)))) > do (format t "~&tried ~s: ~S~% error: ~A~%" external-format decoded > error) > if decoded > do (return decoded))) If LINE is a string you want this: (defun try-decode-line (line external-formats) (loop for external-format in external-formats for decoded = nil for error = nil do (multiple-value-setq (decoded error) (ignore-errors (with-input-from-string (in line) (let ((flexi (flexi-streams:make-flexi-stream in :external-format external-format))) (read-line flexi))))) do (format t "~&tried ~s: ~S~% error: ~A~%" external-format decoded error) if decoded do (return decoded))) But actually I think you want LINE to be a sequence of octets, so this is what you want: (defun try-decode-line (line external-formats) (loop for external-format in external-formats for decoded = nil for error = nil do (multiple-value-setq (decoded error) (ignore-errors (flexi-streams:with-input-from-sequence (in line) (let ((flexi (flexi-streams:make-flexi-stream in :external-format external-format))) (read-line flexi))))) do (format t "~&tried ~s: ~S~% error: ~A~%" external-format decoded error) if decoded do (return decoded))) Result: CL-USER 11 > (try-decode-line '(228 246 252) '((:utf-8 :eol-style :lf) (:latin-1 :eol-style :lf))) tried (:UTF-8 :EOL-STYLE :LF): NIL error: Unexpected value #xF6 in UTF-8 sequence. tried (:LATIN-1 :EOL-STYLE :LF): "äöü" error: T "äöü" But you'll need version 0.5.3 to see that because there was a typo in the code which generated the error messages. > Hrmpf! Am I abusing flexi-streams too much or is that a bug? How > should one read externally-formatted data from an in-memory stream, > anyway? You forgot that you have to create a flexi stream first - in-memory streams happen to be provided by the same library but they're something different. Use MAKE-FLEXI-STREAM to turn them into flexi streams. > And are string-backed in-memory streams even allowed? No. CL already has WITH-INPUT-FROM-STRING... :) > Thanks for your time and for developing flexi-streams. In return, I > hope to be able to buy you a beverage of your choice in Hamburg (-: Nice. Looking forward to seeing you there! Cheers, Edi.

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[flexi-streams-announce] New version 0.5.2 (Was: patch: FLEXI-OUTPUT-STREAM superclasses)
by Edi Weitz 26 Jan '06

26 Jan '06

On Wed, 25 Jan 2006 14:46:12 -0800, James Bielman <jamesjb(a)jamesjb.com> wrote: > I need to replace a horrible mess of character stream vs binary > stream code at work and flexi-streams looks like it will help clean > all this up nicely. Good... :) > LispWorks (4.3.7 on Linux) was complaining about > flexi-output-streams not being output-streams because the > superclasses are incorrect---here's a patch: Ouch! How could that work at all? Needless to say that LW 4.4.6 didn't complain because that's what I'm using all the time. Thanks, I've uploaded a corrected version. Cheers, Edi. ChangeLog Version 0.5.2 2006-01-26 Fixed typos in stream.lisp (thanks to James Bielman) Download <http://weitz.de/files/flexi-streams.tar.gz>

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[flexi-streams-announce] New version 0.5.1 (Was: found bug in output.lisp)
by Edi Weitz 14 Dec '05

14 Dec '05

On Wed, 14 Dec 2005 19:40:53 +0100, jidzikowski(a)common-lisp.net wrote: > i have found some bugs in output.lisp. the stream-clear-output, > stream-finish-output and stream-force-output methods only work for > gray-streams but not for other streams. i have create a patch file. > > but nice work, i will use flexi-streams in cl-smtp Hi Jan! Thanks for the fix. I've released a new version which incorporates your patch. Cheers, Edi.

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[flexi-streams-announce] New version 0.5.0
by Edi Weitz 11 Dec '05

11 Dec '05

ChangeLog: Version 0.5.0 2005-12-11 Added in-memory streams Exported types Added specific conditions Download: <http://weitz.de/files/flexi-streams.tar.gz>

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[flexi-streams-announce] New release 0.4.1
by Edi Weitz 05 Dec '05

05 Dec '05

ChangeLog: Version 0.4.1 2005-12-05 Updated docs Version 0.4.0 2005-12-05 Added US-ASCII encoding Added *USE-REPLACEMENT-CHAR* Download: <http://weitz.de/files/flexi-streams.tar.gz> Cheers, Edi.

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[flexi-streams-announce] Release 0.3.0
by Edi Weitz 28 Nov '05

28 Nov '05

Just for the benefit of those who might read this through announcements(a)common-lisp.net: This is a new project and the current release is 0.3.0. More info at: <http://weitz.de/flexi-streams/> Cheers, Edi.

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