diff options
Diffstat (limited to 'lisp/calendar/parse-time.el')
| -rw-r--r-- | lisp/calendar/parse-time.el | 98 |
1 files changed, 49 insertions, 49 deletions
diff --git a/lisp/calendar/parse-time.el b/lisp/calendar/parse-time.el index 7110a81f0de..b199fca2db5 100644 --- a/lisp/calendar/parse-time.el +++ b/lisp/calendar/parse-time.el @@ -149,62 +149,62 @@ letters, digits, plus or minus signs or colons." ;;;###autoload (defun parse-time-string (string) "Parse the time in STRING into (SEC MIN HOUR DAY MON YEAR DOW DST TZ). -STRING should be something resembling an RFC 822 (or later) date-time, e.g., -\"Fri, 25 Mar 2016 16:24:56 +0100\", but this function is +STRING should be an ISO 8601 time string, e.g., \"2020-01-15T16:12:21-08:00\", +or something resembling an RFC 822 (or later) date-time, e.g., +\"Wed, 15 Jan 2020 16:12:21 -0800\". This function is somewhat liberal in what format it accepts, and will attempt to return a \"likely\" value even for somewhat malformed strings. The values returned are identical to those of `decode-time', but any unknown values other than DST are returned as nil, and an unknown DST value is returned as -1." - (let ((time (list nil nil nil nil nil nil nil -1 nil)) - (temp (parse-time-tokenize (downcase string)))) - (while temp - (let ((parse-time-elt (pop temp)) - (rules parse-time-rules) - (exit nil)) - (while (and rules (not exit)) - (let* ((rule (pop rules)) - (slots (pop rule)) - (predicate (pop rule)) - (parse-time-val)) - (when (and (not (nth (car slots) time)) ;not already set - (setq parse-time-val - (cond ((and (consp predicate) - (not (functionp predicate))) - (and (numberp parse-time-elt) - (<= (car predicate) parse-time-elt) - (or (not (cdr predicate)) - (<= parse-time-elt - (cadr predicate))) - parse-time-elt)) - ((symbolp predicate) - (cdr (assoc parse-time-elt - (symbol-value predicate)))) - ((funcall predicate))))) - (setq exit t) - (while slots - (let ((new-val (if rule - (let ((this (pop rule))) - (if (vectorp this) - (cl-parse-integer - parse-time-elt - :start (aref this 0) - :end (aref this 1)) - (funcall this))) - parse-time-val))) - (setf (nth (pop slots) time) new-val)))))))) - time)) + (condition-case () + (iso8601-parse string) + (wrong-type-argument + (let ((time (list nil nil nil nil nil nil nil -1 nil)) + (temp (parse-time-tokenize (downcase string)))) + (while temp + (let ((parse-time-elt (pop temp)) + (rules parse-time-rules) + (exit nil)) + (while (and rules (not exit)) + (let* ((rule (pop rules)) + (slots (pop rule)) + (predicate (pop rule)) + (parse-time-val)) + (when (and (not (nth (car slots) time)) ;not already set + (setq parse-time-val + (cond ((and (consp predicate) + (not (functionp predicate))) + (and (numberp parse-time-elt) + (<= (car predicate) parse-time-elt) + (or (not (cdr predicate)) + (<= parse-time-elt + (cadr predicate))) + parse-time-elt)) + ((symbolp predicate) + (cdr (assoc parse-time-elt + (symbol-value predicate)))) + ((funcall predicate))))) + (setq exit t) + (while slots + (let ((new-val (if rule + (let ((this (pop rule))) + (if (vectorp this) + (cl-parse-integer + parse-time-elt + :start (aref this 0) + :end (aref this 1)) + (funcall this))) + parse-time-val))) + (setf (nth (pop slots) time) new-val)))))))) + time)))) (defun parse-iso8601-time-string (date-string) - "Parse an ISO 8601 time string, such as 2016-12-01T23:35:06-05:00. -If DATE-STRING cannot be parsed, it falls back to -`parse-time-string'." - (when-let ((time - (if (iso8601-valid-p date-string) - (decoded-time-set-defaults (iso8601-parse date-string)) - ;; Fall back to having `parse-time-string' do fancy - ;; things for us. - (parse-time-string date-string)))) + "Parse an ISO 8601 time string, such as \"2020-01-15T16:12:21-08:00\". +Fall back on parsing something resembling an RFC 822 (or later) date-time. +This function is like `parse-time-string' except that it returns +a Lisp timestamp when successful." + (when-let ((time (parse-time-string date-string))) (encode-time time))) (provide 'parse-time) |