347 lines
16 KiB
EmacsLisp
347 lines
16 KiB
EmacsLisp
;; -*- lexical-binding: t; -*-
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;;; Code:
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;;;; Requirements
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(require 'cl-lib)
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(require 'org)
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(require 'seq)
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(require 'dash)
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;;;; Variables
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(defvar org-ql--today nil)
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;;;; Macros
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(cl-defmacro org-ql (buffers-or-files pred-body &key (action-fn (lambda (element) element)) sort narrow)
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"Find entries in BUFFERS-OR-FILES that match PRED-BODY, and return the results of running ACTION-FN on each matching entry.
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ACTION-FN should take a single argument, which will be the result
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of calling `org-element-headline-parser' at each matching entry.
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SORT is a user defined sorting function, or an unquoted list of
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one or more sorting methods, including: `date', `deadline',
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`scheduled', and `priority'.
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If NARROW is non-nil, query will run without widening the
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buffer (the default is to widen and search the entire buffer)."
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(declare (indent defun))
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`(let ((items (org-ql--query ,buffers-or-files
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(byte-compile (lambda ()
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(cl-symbol-macrolet ((= #'=)
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(< #'<)
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(> #'>)
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(<= #'<=)
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(>= #'>=))
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,pred-body)))
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,action-fn
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:narrow ,narrow)))
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(cl-typecase ',sort
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(list (org-ql--sort-by items ',sort))
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(function (funcall ,sort items))
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(null items)
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(t (user-error "SORT must be a function or a list of methods (see documentation)")))))
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(defmacro org-ql--fmap (fns &rest body)
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(declare (indent defun))
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`(cl-letf ,(cl-loop for (fn target) in fns
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collect `((symbol-function ',fn)
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(symbol-function ,target)))
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,@body))
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;;;; Functions
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(cl-defun org-ql--query (buffers-or-files pred action-fn &key narrow)
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"FIXME: Add docstring."
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;; MAYBE: Set :narrow t for buffers and nil for files.
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(let* ((buffers-or-files (cl-typecase buffers-or-files
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(null (list (current-buffer)))
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(buffer (list buffers-or-files))
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(list buffers-or-files)
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(string (list buffers-or-files))))
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;; TODO: Figure out how to use or reimplement the org-scanner-tags feature.
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;; (org-use-tag-inheritance t)
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;; (org-trust-scanner-tags t)
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(org-ql--today (org-today)))
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(-flatten-n 1 (--map (with-current-buffer (cl-typecase it
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(buffer it)
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(string (or (find-buffer-visiting it)
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(find-file-noselect it)
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(user-error "Can't open file: %s" it))))
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(mapcar action-fn
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(org-ql--filter-buffer :pred pred :narrow narrow)))
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buffers-or-files))))
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(cl-defun org-ql--filter-buffer (&key pred narrow)
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"Return positions of matching headings in current buffer.
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Headings should return non-nil for any ANY-PREDS and nil for all
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NONE-PREDS. If NARROW is non-nil, buffer will not be widened
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first."
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;; Cache `org-today' so we don't have to run it repeatedly.
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(let (today)
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(cl-letf ((today org-ql--today))
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(org-ql--fmap ((category #'org-ql--category-p)
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(date #'org-ql--date-plain-p)
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(deadline #'org-ql--deadline-p)
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(scheduled #'org-ql--scheduled-p)
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(closed #'org-ql--closed-p)
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(habit #'org-ql--habit-p)
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(priority #'org-ql--priority-p)
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(todo #'org-ql--todo-p)
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(done #'org-ql--done-p)
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(tags #'org-ql--tags-p)
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(property #'org-ql--property-p)
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(regexp #'org-ql--regexp-p)
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(org-back-to-heading #'outline-back-to-heading))
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(save-excursion
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(save-restriction
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(unless narrow
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(widen))
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(goto-char (point-min))
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(when (org-before-first-heading-p)
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(outline-next-heading))
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(cl-loop when (funcall pred)
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collect (org-element-headline-parser (line-end-position))
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while (outline-next-heading))))))))
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;;;;; Predicates
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(defun org-ql--category-p (&rest categories)
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"Return non-nil if current heading is in one or more of CATEGORIES."
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(when-let ((category (org-get-category (point))))
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(cl-typecase categories
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(null t)
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(otherwise (member category categories)))))
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(defun org-ql--todo-p (&rest keywords)
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"Return non-nil if current heading is a TODO item.
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With KEYWORDS, return non-nil if its keyword is one of KEYWORDS."
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(when-let ((state (org-get-todo-state)))
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(cl-typecase keywords
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(null t)
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(list (member state keywords))
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(symbol (member state (symbol-value keywords)))
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(otherwise (user-error "Invalid todo keywords: %s" keywords)))))
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(defsubst org-ql--done-p ()
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(or (apply #'org-ql--todo-p org-done-keywords)))
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(defun org-ql--tags-p (&rest tags)
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"Return non-nil if current heading has one or more of TAGS."
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;; TODO: Try to use `org-make-tags-matcher' to improve performance. It would be nice to not have
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;; to run `org-get-tags-at' for every heading, especially with inheritance.
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(when-let ((tags-at (org-get-tags-at (point) (not org-use-tag-inheritance))))
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(cl-typecase tags
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(null t)
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(otherwise (seq-intersection tags tags-at)))))
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(defun org-ql--date-p (type &optional comparator target-date)
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"Return non-nil if current heading has a date property of TYPE.
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TYPE should be a keyword symbol, like :scheduled or :deadline.
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With COMPARATOR and TARGET-DATE, return non-nil if entry's
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scheduled date compares with TARGET-DATE according to COMPARATOR.
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TARGET-DATE may be a string like \"2017-08-05\", or an integer
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like one returned by `date-to-day'."
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(when-let ((timestamp (pcase type
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;; FIXME: Add :date selector, since I put it
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;; in the examples but forgot to actually
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;; make it.
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(:deadline (org-entry-get (point) "DEADLINE"))
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(:scheduled (org-entry-get (point) "SCHEDULED"))
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(:closed (org-entry-get (point) "CLOSED"))))
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(date-element (with-temp-buffer
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;; FIXME: Hack: since we're using
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;; (org-element-property :type date-element)
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;; below, we need this date parsed into an
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;; org-element element
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(insert timestamp)
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(goto-char 0)
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(org-element-timestamp-parser))))
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(pcase comparator
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;; Not comparing, just checking if it has one
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('nil t)
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;; Compare dates
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((pred functionp)
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(let ((target-day-number (cl-typecase target-date
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(null (+ (org-get-wdays timestamp) (org-today)))
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;; Append time to target-date
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;; because `date-to-day' requires it
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(string (date-to-day (concat target-date " 00:00")))
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(integer target-date))))
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(pcase (org-element-property :type date-element)
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((or 'active 'inactive)
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(funcall comparator
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(org-time-string-to-absolute
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(org-element-timestamp-interpreter date-element 'ignore))
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target-day-number))
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(error "Unknown date-element type: %s" (org-element-property :type date-element)))))
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(otherwise (user-error "COMPARATOR (%s) must be a function, and DATE (%s) must be a string or day-number integer"
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comparator target-date)))))
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(defsubst org-ql--date-plain-p (&optional comparator target-date)
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(org-ql--date-p :date comparator target-date))
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(defsubst org-ql--deadline-p (&optional comparator target-date)
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;; FIXME: This is slightly confusing. Using plain (deadline) does, and should, select entries
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;; that have any deadline. But the common case of wanting to select entries whose deadline is
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;; within the warning days (either the global setting or that entry's setting) requires the user
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;; to specify the <= comparator, which is unintuitive. Maybe it would be better to use that
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;; comparator by default, and use an 'any comparator to select entries with any deadline. Of
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;; course, that would make the deadline selector different from the scheduled, closed, and date
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;; selectors, which would also be unintuitive.
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(org-ql--date-p :deadline comparator target-date))
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(defsubst org-ql--scheduled-p (&optional comparator target-date)
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(org-ql--date-p :scheduled comparator target-date))
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(defsubst org-ql--closed-p (&optional comparator target-date)
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(org-ql--date-p :closed comparator target-date))
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(defun org-ql--priority-p (&optional comparator-or-priority priority)
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"Return non-nil if current heading has a certain priority.
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COMPARATOR-OR-PRIORITY should be either a comparator function,
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like `<=', or a priority string, like \"A\" (in which case (\` =)
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'will be the comparator). If COMPARATOR-OR-PRIORITY is a
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comparator, PRIORITY should be a priority string."
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(let* (comparator)
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(cond ((null priority)
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;; No comparator given: compare only given priority with =
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(setq priority comparator-or-priority
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comparator '=))
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(t
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;; Both comparator and priority given
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(setq comparator comparator-or-priority)))
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(setq comparator (cl-case comparator
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;; Invert comparator because higher priority means lower number
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(< '>)
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(> '<)
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(<= '>=)
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(>= '<=)
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(= '=)
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(otherwise (user-error "Invalid comparator: %s" comparator))))
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(setq priority (* 1000 (- org-lowest-priority (string-to-char priority))))
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(when-let ((item-priority (save-excursion
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(save-match-data
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;; FIXME: Is the save-match-data above necessary?
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(when (and (looking-at org-heading-regexp)
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(save-match-data
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(string-match org-priority-regexp (match-string 0))))
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;; TODO: Items with no priority
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;; should not be the same as B
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;; priority. That's not very
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;; useful IMO. Better to do it
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;; like in org-super-agenda.
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(org-get-priority (match-string 0)))))))
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(funcall comparator priority item-priority))))
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(defun org-ql--habit-p ()
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(org-is-habit-p))
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(defun org-ql--regexp-p (regexp)
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"Return non-nil if current entry matches REGEXP."
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(let ((end (or (save-excursion
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(outline-next-heading))
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(point-max))))
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(save-excursion
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(goto-char (line-beginning-position))
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(re-search-forward regexp end t))))
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(defun org-ql--property-p (property &optional value)
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"Return non-nil if current entry has PROPERTY, and optionally VALUE."
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(pcase property
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('nil (user-error "Property matcher requires a PROPERTY argument."))
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(_ (pcase value
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('nil
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;; Check that PROPERTY exists
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(org-entry-get (point) property))
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(_
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;; Check that PROPERTY has VALUE
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(string-equal value (org-entry-get (point) property 'selective)))))))
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;;;;; Sorting
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;; FIXME: These appear to work properly, but it would be good to have tests for them.
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(defun org-ql--sort-by (items predicates)
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"Return ITEMS sorted by PREDICATES.
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PREDICATES is a list of one or more sorting methods, including:
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`deadline', `scheduled', and `priority'."
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;; FIXME: Test `date' type.
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(cl-flet* ((sorter (symbol)
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(pcase symbol
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((or 'deadline 'scheduled)
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(apply-partially #'org-ql--date-type< (intern (concat ":" (symbol-name symbol)))))
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('date #'org-ql--date<)
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('priority #'org-ql--priority<)
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;; NOTE: 'todo is handled below
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;; FIXME: Add more?
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(_ (user-error "Invalid sorting predicate: %s" symbol))))
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(todo-keyword-pos (keyword)
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;; MAYBE: Would it be faster to precompute these and do an alist lookup?
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(cl-position keyword org-todo-keywords-1 :test #'string=))
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(sort-by-todo-keyword (items)
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(let* ((grouped-items (--group-by (when-let (keyword (org-element-property :todo-keyword it))
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(substring-no-properties keyword))
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items))
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(sorted-groups (--sort (let* ((it-pos (todo-keyword-pos (car it)))
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(other-pos (todo-keyword-pos (car other))))
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(cond ((and it-pos other-pos)
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(< it-pos other-pos))
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(it-pos t)
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(other-pos nil)))
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grouped-items)))
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(-flatten-n 1 (-map #'cdr sorted-groups)))))
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(cl-loop for pred in (nreverse predicates)
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do (setq items (if (eq pred 'todo)
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(sort-by-todo-keyword items)
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(-sort (sorter pred) items)))
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finally return items)))
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(defun org-ql--date-type< (type a b)
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"Return non-nil if A's date of TYPE is earlier than B's.
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A and B are Org headline elements. TYPE should be a symbol like
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`:deadline' or `:scheduled'"
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(org-ql--org-timestamp-element< (org-element-property type a)
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(org-element-property type b)))
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(defun org-ql--date< (a b)
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"Return non-nil if A's deadline or scheduled element property is earlier than B's.
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Deadline is considered before scheduled."
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(cl-macrolet ((ts (item)
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`(or (org-element-property :deadline ,item)
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(org-element-property :scheduled ,item))))
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(org-ql--org-timestamp-element< (ts a) (ts b))))
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(defun org-ql--org-timestamp-element< (a b)
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"Return non-nil if A's date element is earlier than B's.
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A and B are Org timestamp elements."
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(cl-flet ((ts (ts)
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(when ts
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(org-timestamp-format ts "%s"))))
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(let* ((a-ts (ts a))
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(b-ts (ts b)))
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(cond ((and a-ts b-ts)
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(string< a-ts b-ts))
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(a-ts t)
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(b-ts nil)))))
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(defun org-ql--priority< (a b)
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"Return non-nil if A's priority is higher than B's.
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A and B are Org headline elements."
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(cl-flet ((priority (item)
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(org-element-property :priority item)))
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;; NOTE: Priorities are numbers in Org elements. This might differ from the priority selector logic.
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(let ((a-priority (priority a))
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(b-priority (priority b)))
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(cond ((and a-priority b-priority)
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(< a-priority b-priority))
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(a-priority t)
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(b-priority nil)))))
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;;;; Footer
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(provide 'org-ql)
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;;; org-ql.el ends here
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