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https://github.com/correl/org-habit-streaks.git
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73 lines
2.4 KiB
EmacsLisp
73 lines
2.4 KiB
EmacsLisp
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;;; org-habit-streaks --- Counts streaks in org-habit entries
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;; Copyright (c) 2015 Correl Roush
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;; Author: Correl Roush <correl@gmail.com>
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;; URL: http://github.com/correl/org-habit-streaks/
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;; Version: 0.1
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;; Created: 2015-06-11
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;; This file is NOT part of GNU Emacs.
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;;; License:
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;; This program is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 3, or (at your option)
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;; any later version.
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;;
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;; This program is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;;
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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;; Boston, MA 02110-1301, USA.
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;;; Commentary:
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;;; Code:
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(require 'org-habit)
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(defcustom org-habit-streaks-preceding-days
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365
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"Number of days before today to include in streak counting."
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:group 'org-habit-streaks
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:type 'integer)
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(defun org-habit-streaks--streaks (interval values)
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"Given an INTERVAL and a list of sequential integer VALUES, group streaks together."
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(-reduce-from
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(lambda (acc value)
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(let* ((current-streak (car acc))
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(last-value (car current-streak))
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(new-streak? (or (not last-value)
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(> (- value last-value) interval)))
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(rest (cdr acc)))
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(if new-streak?
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(cons (list value) acc)
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(cons (cons value current-streak)
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rest))))
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nil
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values))
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;;;###autoload
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(defun org-habit-streaks (&optional pom)
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"Groups past dates the task at point was completed into streaks."
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(let* ((org-habit-preceding-days org-habit-streaks-preceding-days)
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(habit (org-habit-parse-todo pom))
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(interval (org-habit-scheduled-repeat habit))
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(done-dates (org-habit-done-dates habit))
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(streaks (org-habit-streaks--streaks interval done-dates))
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(last-done (-last-item done-dates))
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(current-streak (if (and streaks (<= (- (org-today) last-done) interval))
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(length (car streaks))
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0)))
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(list current-streak streaks)))
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(provide 'org-habit-streaks)
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;;; org-habit-streaks.el ends here
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