From 89c63b3522b62c0fd725f0b348927a2069238452 Mon Sep 17 00:00:00 2001 From: Paul Eggert Date: Mon, 5 Aug 2019 17:38:52 -0700 Subject: New function time-convert MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This replaces the awkward reuse of encode-time to both convert calendrical timestamps to Lisp timestamps, and to convert Lisp timestamps to other forms. Now, encode-time does just the former and the new function does just the latter. The new function builds on a suggestion by Lars Ingebrigtsen in: https://lists.gnu.org/r/emacs-devel/2019-07/msg00801.html and refined by Stefan Monnier in: https://lists.gnu.org/r/emacs-devel/2019-07/msg00803.html * doc/lispref/os.texi (Time of Day, Time Conversion): * doc/misc/emacs-mime.texi (time-date): * etc/NEWS: Update documentation. * lisp/calendar/cal-dst.el (calendar-next-time-zone-transition): * lisp/calendar/time-date.el (seconds-to-time, days-to-time): * lisp/calendar/timeclock.el (timeclock-seconds-to-time): * lisp/cedet/ede/detect.el (ede-detect-qtest): * lisp/completion.el (cmpl-hours-since-origin): * lisp/ecomplete.el (ecomplete-add-item): * lisp/emacs-lisp/cl-extra.el (cl--random-time): * lisp/emacs-lisp/timer.el (timer--time-setter) (timer-next-integral-multiple-of-time): * lisp/find-lisp.el (find-lisp-format-time): * lisp/gnus/gnus-diary.el (gnus-user-format-function-d): * lisp/gnus/gnus-group.el (gnus-group-set-timestamp): * lisp/gnus/gnus-icalendar.el (gnus-icalendar-show-org-agenda): * lisp/gnus/nnrss.el (nnrss-normalize-date): * lisp/gnus/nnspool.el (nnspool-request-newgroups): * lisp/net/ntlm.el (ntlm-compute-timestamp): * lisp/net/pop3.el (pop3-uidl-dele): * lisp/obsolete/vc-arch.el (vc-arch-add-tagline): * lisp/org/org-clock.el (org-clock-get-clocked-time) (org-clock-resolve, org-resolve-clocks, org-clock-in) (org-clock-out, org-clock-sum): * lisp/org/org-id.el (org-id-uuid, org-id-time-to-b36): * lisp/org/ox-publish.el (org-publish-cache-ctime-of-src): * lisp/proced.el (proced-format-time): * lisp/progmodes/cc-cmds.el (c-progress-init) (c-progress-update): * lisp/progmodes/cperl-mode.el (cperl-time-fontification): * lisp/progmodes/flymake.el (flymake--schedule-timer-maybe): * lisp/progmodes/vhdl-mode.el (vhdl-update-progress-info) (vhdl-fix-case-region-1): * lisp/tar-mode.el (tar-octal-time): * lisp/time.el (emacs-uptime): * lisp/url/url-auth.el (url-digest-auth-make-cnonce): * lisp/url/url-util.el (url-lazy-message): * lisp/vc/vc-cvs.el (vc-cvs-parse-entry): * lisp/vc/vc-hg.el (vc-hg-state-fast): * lisp/xt-mouse.el (xterm-mouse-event): * test/lisp/emacs-lisp/timer-tests.el: (timer-next-integral-multiple-of-time-2): Use time-convert, not encode-time. * lisp/calendar/icalendar.el (icalendar--decode-isodatetime): Don’t use now-removed FORM argument for encode-time. It wasn’t crucial anyway. * lisp/emacs-lisp/byte-opt.el (side-effect-free-fns): Add time-convert. * lisp/emacs-lisp/elint.el (elint-unknown-builtin-args): Update encode-time signature to match current arg set. * lisp/emacs-lisp/timer.el (timer-next-integral-multiple-of-time): Use timer-convert with t rather than doing it by hand. * src/timefns.c (time_hz_ticks, time_form_stamp, lisp_time_form_stamp): Remove; no longer needed. (decode_lisp_time): Rturn the form instead of having a *PFORM arg. All uses changed. (time_arith): Just return TICKS if HZ is 1. (Fencode_time): Remove argument FORM. All callers changed. Do not attempt to encode time values; just encode decoded (calendrical) times. Unless CURRENT_TIME_LIST, just return VALUE since HZ is 1. (Ftime_convert): New function, which does the time value conversion that bleeding-edge encode-time formerly did. Return TIME if it is easy to see that it is already of the correct form. (Fcurrent_time): Mention in doc that the form is planned to change. * test/src/timefns-tests.el (decode-then-encode-time): Don’t use (encode-time nil). --- etc/NEWS | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) (limited to 'etc') diff --git a/etc/NEWS b/etc/NEWS index 7b8916edd69..116bdb961c3 100644 --- a/etc/NEWS +++ b/etc/NEWS @@ -2077,21 +2077,24 @@ functions like 'process-id' that compute process IDs, and functions like ** Time values ++++ +*** New function time 'time-convert' converts Lisp time values +to Lisp timestamps of various forms, including a new timestamp form +(TICKS . HZ) where TICKS is an integer and HZ a positive integer +denoting a clock frequency. + +++ *** Although the default timestamp format is still '(HI LO US PS)', it is planned to change in a future Emacs version, to exploit bignums. The documentation has been updated to mention that the timestamp format may change and that programs should use functions like -'format-time-string', 'decode-time', and 'encode-time' rather than +'format-time-string', 'decode-time', and 'time-convert' rather than probing the innards of a timestamp directly, or creating a timestamp by hand. +++ -*** 'encode-time' supports a new API '(encode-time TIME &optional FORM)'. -This can convert decoded times and Lisp time values to Lisp timestamps -of various forms, including a new timestamp form '(TICKS . HZ)', where -TICKS is an integer and HZ is a positive integer denoting a clock -frequency. The old 'encode-time' API is still supported. +*** 'encode-time' supports a new API '(encode-time TIME)'. +The old 'encode-time' API is still supported. +++ *** A new package to parse ISO 8601 time, date, durations and -- cgit v1.2.1