redo conflict detection
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ndwarshuis
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7bc64fae32
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conf.org
238
conf.org
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@ -1448,7 +1448,7 @@ The modeline is a nice place to indicate if something is clocked in or out. Unfo
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*** conflict detection
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Somehow org-mode has no way to detect conflicts between tasks with timestamps (!!??). Luckily I can make my own.
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**** backend
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The algoithm to detect conflicts scans all org files and stores conflicts in a list of pairs of each heading with a conflicting timestamp.
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The algorithm to detect conflicts scans all org files and stores conflicts in a list of pairs of each heading with a conflicting timestamp.
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Steps for this algorithm:
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1. make a list of all entries with timestamps
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@ -1457,119 +1457,159 @@ Steps for this algorithm:
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This should be O(n) (best case/no conflicts) to O(n^2) (worst case/everything conflicts)
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#+BEGIN_SRC emacs-lisp
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(defun nd/are-conflicting-p (ts-a ts-b)
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"Return t if timestamps TS-A and TS-B conflict."
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(let* ((earlier-a (car ts-a))
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(earlier-b (car ts-b))
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(later-b (+ earlier-b (nth 1 ts-b))))
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(and (>= earlier-a earlier-b) (<= earlier-a later-b))))
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;; TODO either need the file path or turn the point into a marker
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(defun nd/org-conflict-make-entry (ts range offset fp &optional type)
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(list :timestamp ts
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:range (or range 0)
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:offset offset
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:type type
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:filepath fp))
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(defun nd/detect-conflict (ts ts-list conlist)
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"Recursively determine if timestamp TS conflicts with anything in TS-LIST.
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If detected, conflict pair is added to CONLIST."
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(let ((next-ts (car ts-list))
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(rem-ts (cdr ts-list)))
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(if (nd/are-conflicting-p ts next-ts)
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(progn
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(setq conlist (cons (list ts next-ts) conlist))
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(if rem-ts (nd/detect-conflict ts rem-ts conlist) conlist))
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conlist)))
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(defun nd/build-conlist (ts-list conlist)
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"Recursively build a list of timestamp conflicts from TS-LIST.
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TS-LIST is comprised of entries in the form (staring-ts timerange marker)
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where timerange is 0 for singular timestamps and a positive number for
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anything with to times or a timestamp range.
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Detected conflicts are stored in CONLIST as pairs of conflicting ts
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entries from the TS-LIST."
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(let ((cur-ts (car ts-list))
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(rem-ts (cdr ts-list)))
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(if rem-ts
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(nd/build-conlist rem-ts (nd/detect-conflict cur-ts rem-ts conlist))
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conlist)))
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(defconst nd/org-tsm-regexp
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"\\([0-9]\\{4\\}-[0-9]\\{2\\}-[0-9]\\{2\\} [^]+0-9>\r\n -]+? \\)\\([0-9]\\{1,2\\}:[0-9]\\{2\\}?\\)-\\([0-9]\\{1,2\\}:[0-9]\\{2\\}\\)"
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"Regular expression for timestamps with two times.")
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(defun nd/get-timestamps ()
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"Get the org-marker and timestamp(s) (multiple if range) or current heading."
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;; TODO, what if I care about more than just TIMESTAMPs
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(let* ((ts (org-entry-get nil "TIMESTAMP"))
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(marker (point-marker))
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(ts-range 0)
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(ts-entry))
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(defun nd/org-conflict-parse-ts (ts)
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"Return start and end of timestamp TS depending on if it is a range.
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Return value will be (start . range) if range and (start) if not."
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(when ts
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(let ((split
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(lambda (ts &optional end)
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(--> ts
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(org-timestamp-split-range it end)
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(org-element-property :raw-value it)
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(org-2ft it)))))
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(if (eq (org-element-property :type ts) 'active-range)
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(let ((start (funcall split ts))
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(end (funcall split ts t)))
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(cons start (- end start)))
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`(,(funcall split ts))))))
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(defun nd/org-conflict-effort-seconds (effort-str)
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"Convert EFFORT-STR into an integer in seconds from HH:MM format."
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(let ((effort-str (string-trim effort-str)))
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(save-match-data
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(cond
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;; match timestamps that have two times
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((string-match nd/org-tsm-regexp ts)
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(let* ((ts1 (concat (match-string 1 ts) (match-string 2 ts)))
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(ts2 (concat (match-string 1 ts) (match-string 3 ts)))
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(ft1 (org-2ft ts1))
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(ft2 (org-2ft ts2)))
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(setq ts-entry ft1)
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(setq ts-range (- ft2 ft1))))
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((string-match "^\\([0-9]+\\):\\([0-6][0-9]\\)$" effort-str)
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(let ((hours (->> effort-str
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(match-string 1)
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string-to-number
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(* 60))))
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(->> effort-str
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(match-string 2)
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string-to-number
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(+ hours)
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(* 60))))
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(t (error (format "Unknown effort: %s'" effort-str)))))))
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;; match timestamps that have a range (eq two timestamps)
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((string-match org-tr-regexp ts)
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(let* ((ts1 (match-string 1 ts))
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(ts2 (match-string 2 ts))
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(ft1 (org-2ft ts1))
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(ft2 (org-2ft ts2)))
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(setq ts-entry ft1)
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(setq ts-range (- ft2 ft1))))
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(defun nd/org-conflict-extract (acc fun objs &rest args)
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(while objs
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(setq acc (apply fun acc (car objs) args)
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objs (cdr objs)))
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acc)
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;; match timestamps with only one time
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(t (setq ts-entry (org-2ft ts))))
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(list ts-entry ts-range marker ts))))
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(defun nd/org-conflict-extract-hl-sched (acc hl fp)
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(let ((ts-sched (->> hl
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(org-element-property :scheduled)
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(org-element-property :raw-value)
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(org-2ft)))
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(range (-some->> hl
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(org-element-property :EFFORT)
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nd/org-conflict-effort-seconds))
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(offset (org-element-property :begin hl)))
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(if (= 0 ts-sched) acc
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(-> ts-sched
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(nd/org-conflict-make-entry range offset fp 'scheduled)
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(cons acc)))))
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(defun nd/build-conflict-list ()
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"Scan all org files and make a list of all timestamps that conflict."
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(let ((files (org-agenda-files))
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max-reached ts-list cur-index conflicts)
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;; get all timestamps from org buffers
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(dolist (f files ts-list)
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(with-current-buffer
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(find-file-noselect f)
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(goto-char (point-min))
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(when (not (outline-on-heading-p)) (outline-next-heading))
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(setq max-reached nil)
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(while (not max-reached)
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(let ((new-ts (nd/get-timestamps)))
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(if new-ts (setq ts-list (cons new-ts ts-list))))
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(unless (outline-next-heading) (setq max-reached t)))))
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(defun nd/org-conflict-extract-hl-ts (acc hl fp)
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(let ((offset (org-element-property :begin hl)))
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(-->
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hl
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(assoc 'section it)
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(org-element-contents it)
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(--remove
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(or (eq 'planning (org-element-type it))
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(eq 'property-drawer (org-element-type it))
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(eq 'drawer (org-element-type it)))
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it)
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(org-element-map it 'timestamp #'identity)
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(--filter
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(or (eq 'active (org-element-property :type it))
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(eq 'active-range (org-element-property :type it)))
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it)
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(mapcar #'nd/org-conflict-parse-ts it)
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(--map (nd/org-conflict-make-entry (car it) (cdr it) offset fp) it)
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(append acc it))))
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;; sort the timestamp list
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;; TODO, need to make range-aware
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(setq ts-list (sort ts-list (lambda (a b) (< (car a) (car b)))))
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(defun nd/org-conflict-extract-hl (acc hl fp)
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(let ((sub (--> (org-element-contents hl)
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(if (assoc 'section it) (cdr it) it))))
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(-> acc
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(nd/org-conflict-extract-hl-sched hl fp)
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(nd/org-conflict-extract-hl-ts hl fp)
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(nd/org-conflict-extract #'nd/org-conflict-extract-hl sub fp))))
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;; build a list of conflicts
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(nd/build-conlist ts-list conflicts)))
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(defun nd/org-conflict-extract-file (acc fp)
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(-->
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fp
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(find-file-noselect it t)
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(with-current-buffer it (org-element-parse-buffer))
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(org-element-contents it)
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(if (assoc 'section it) (cdr it) it)
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(nd/org-conflict-extract acc #'nd/org-conflict-extract-hl it fp)))
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(defun nd/org-conflict-conflicting-p (ts-a ts-b)
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"Return t if timestamps TS-A and TS-B conflict."
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(let* ((start-a (plist-get ts-a :timestamp))
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(start-b (plist-get ts-b :timestamp))
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(end-a (+ start-a (plist-get ts-a :range)))
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(end-b (+ start-b (plist-get ts-b :range))))
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(<= start-a start-b end-a)))
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(defun nd/find-conflict (ts ts-list conlist)
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(->> ts-list
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(--take-while (nd/org-conflict-conflicting-p ts it))
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(--map (cons ts it))
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(append conlist)))
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(defun nd/org-conflict-build-conlist (ts-list)
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(let ((conlist))
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(while (< 1 (length ts-list))
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(setq conlist (nd/find-conflict (car ts-list) (cdr ts-list) conlist)
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ts-list (cdr ts-list)))
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conlist))
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(defun nd/org-conflict-get ()
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(->>
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;; (list "~/Org/reference/testconflict.org")
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(org-agenda-files)
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(nd/org-conflict-extract nil #'nd/org-conflict-extract-file)
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(--sort (< (plist-get it :timestamp) (plist-get other :timestamp)))
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nd/org-conflict-build-conlist))
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#+END_SRC
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**** frontend
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To display any conflicts, I could just fetch the org headings and throw them into a new buffer. But that's boring, and quite limiting. I basically want all the perks of an agenda buffer...tab-follow, the nice parent display at the bottom, time adjust hotkeys, etc. So the obvious and hacky solution is to throw together a quick-n-dirty agenda buffer which displays each conflict pair in sequentional fashion.
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#+BEGIN_SRC emacs-lisp
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(defun nd/get-conflict-header-text (conflict-marker)
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(defun nd/get-conflict-header-text (ts-entry)
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"Return string with text properties representing the org header for
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MARKER for use in the conflict agenda view."
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(let* ((props (list
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(let* ((offset (plist-get ts-entry :offset))
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(ts-marker (--> ts-entry
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(plist-get it :filepath)
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(find-file-noselect it)
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(with-current-buffer it
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(copy-marker offset))))
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(props (list
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'face nil
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'done-face 'org-agenda-done
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'org-not-done-regexp org-not-done-regexp
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'org-todo-regexp org-todo-regexp
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'org-complex-heading-regexp org-complex-heading-regexp
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'mouse-face 'highlight))
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;; 'help-echo
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;; (format "mouse-2 or RET jump to org file %s"
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;; (abbreviate-file-name buffer-file-name))))
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marker priority category level tags todo-state
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ts-date ts-date-type ts-date-pair
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txt beg end inherited-tags todo-state-end-pos)
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(with-current-buffer (marker-buffer conflict-marker)
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(with-current-buffer (marker-buffer ts-marker)
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(save-excursion
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(goto-char conflict-marker)
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(goto-char ts-marker)
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(setq marker (org-agenda-new-marker (point))
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category (org-get-category)
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@ -1596,6 +1636,10 @@ MARKER for use in the conflict agenda view."
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'ts-date ts-date
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'type "timestamp")))))
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(defun nd/org-conflct-ts-fmt (ts)
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(let ((fmt "[%Y-%m-%d %H:%M]"))
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(--> ts (plist-get it :timestamp) (format-time-string fmt it))))
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(defun nd/org-conflicts (&optional arg)
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(interactive "P")
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@ -1626,14 +1670,14 @@ MARKER for use in the conflict agenda view."
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'short-heading "Conflicts"))
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(org-agenda-mark-header-line (point-min))
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(setq rtnall (nd/build-conflict-list))
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(when rtnall
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(mapc
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(lambda (c)
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(insert (concat "Between " (mapconcat (lambda (ts) (nth 3 ts)) c " and ") "\n"))
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(insert (concat (mapconcat (lambda (ts) (nd/get-conflict-header-text (nth 2 ts))) c "\n") "\n"))
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(insert "\n"))
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rtnall))
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(-some->
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(nd/org-conflict-get)
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(--each
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(insert (concat
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"At " (nd/org-conflct-ts-fmt (car it)) "\n"
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(nd/get-conflict-header-text (car it)) "\n"
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(nd/get-conflict-header-text (cdr it)) "\n"
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"\n"))))
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;; clean up and finalize
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(goto-char (point-min))
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