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org-mode/contrib/lisp/org-collector.el
2012-01-04 16:21:56 +01:00

230 lines
8.1 KiB
EmacsLisp

;;; org-collector --- collect properties into tables
;; Copyright (C) 2008-2012 Free Software Foundation, Inc.
;; Author: Eric Schulte <schulte dot eric at gmail dot com>
;; Keywords: outlines, hypermedia, calendar, wp, experimentation,
;; organization, properties
;; Homepage: http://orgmode.org
;; Version: 0.01
;; This file is not yet part of GNU Emacs.
;; GNU Emacs is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 3, or (at your option)
;; any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; Pass in an alist of columns, each column can be either a single
;; property or a function which takes column names as arguments.
;;
;; For example the following propview block would collect the value of
;; the 'amount' property from each header in the current buffer
;;
;; #+BEGIN: propview :cols (ITEM amount)
;; | "ITEM" | "amount" |
;; |---------------------+----------|
;; | "December Spending" | 0 |
;; | "Grocery Store" | 56.77 |
;; | "Athletic club" | 75.0 |
;; | "Restaurant" | 30.67 |
;; | "January Spending" | 0 |
;; | "Athletic club" | 75.0 |
;; | "Restaurant" | 50.00 |
;; |---------------------+----------|
;; | | |
;; #+END:
;;
;; This slightly more selective propview block will limit those
;; headers included to those in the subtree with the id 'december'
;; in which the spendtype property is equal to "food"
;;
;; #+BEGIN: propview :id "december" :conds ((string= spendtype "food")) :cols (ITEM amount)
;; | "ITEM" | "amount" |
;; |-----------------+----------|
;; | "Grocery Store" | 56.77 |
;; | "Restaurant" | 30.67 |
;; |-----------------+----------|
;; | | |
;; #+END:
;;
;; Org Collector allows arbitrary processing of the property values
;; through elisp in the cols: property. This allows for both simple
;; computations as in the following example
;;
;; #+BEGIN: propview :id "results" :cols (ITEM f d list (apply '+ list) (+ f d))
;; | "ITEM" | "f" | "d" | "list" | "(apply (quote +) list)" | "(+ f d)" |
;; |--------+-----+-----+-------------------------+--------------------------+-----------|
;; | "run1" | 2 | 33 | (quote (9 2 3 4 5 6 7)) | 36 | 35 |
;; | "run2" | 2 | 34 | :na | :na | 36 |
;; | "run3" | 2 | 35 | :na | :na | 37 |
;; | "run4" | 2 | 36 | :na | :na | 38 |
;; | | | | | | |
;; #+END:
;;
;; or more complex computations as in the following example taken from
;; an org file where each header in "results" subtree contained a
;; property "sorted_hits" which was passed through the
;; "average-precision" elisp function
;;
;; #+BEGIN: propview :id "results" :cols (ITEM (average-precision sorted_hits))
;; | "ITEM" | "(average-precision sorted_hits)" |
;; |-----------+-----------------------------------|
;; | run (80) | 0.105092 |
;; | run (70) | 0.108142 |
;; | run (10) | 0.111348 |
;; | run (60) | 0.113593 |
;; | run (50) | 0.116446 |
;; | run (100) | 0.118863 |
;; #+END:
;;
;;; Code:
(require 'org)
(require 'org-table)
(defvar org-propview-default-value 0
"Default value to insert into the propview table when the no
value is calculated either through lack of required variables for
a column, or through the generation of an error.")
(defun and-rest (list)
(if (listp list)
(if (> (length list) 1)
(and (car list) (and-rest (cdr list)))
(car list))
list))
(put 'org-collector-error
'error-conditions
'(error column-prop-error org-collector-error))
(defun org-dblock-write:propview (params)
"collect the column specification from the #+cols line
preceeding the dblock, then update the contents of the dblock."
(interactive)
(condition-case er
(let ((cols (plist-get params :cols))
(inherit (plist-get params :inherit))
(conds (plist-get params :conds))
(match (plist-get params :match))
(scope (plist-get params :scope))
(noquote (plist-get params :noquote))
(colnames (plist-get params :colnames))
(content-lines (org-split-string (plist-get params :content) "\n"))
id table line pos)
(save-excursion
(when (setq id (plist-get params :id))
(cond ((not id) nil)
((eq id 'global) (goto-char (point-min)))
((eq id 'local) nil)
((setq idpos (org-find-entry-with-id id))
(goto-char idpos))
(t (error "Cannot find entry with :ID: %s" id))))
(org-narrow-to-subtree)
(setq stringformat (if noquote "%s" "%S"))
(setq table (org-propview-to-table
(org-propview-collect cols stringformat conds match scope inherit
(if colnames colnames cols)) stringformat))
(widen))
(setq pos (point))
(when content-lines
(while (string-match "^#" (car content-lines))
(insert (pop content-lines) "\n")))
(insert table) (insert "\n|--") (org-cycle) (move-end-of-line 1)
(message (format "point-%d" pos))
(while (setq line (pop content-lines))
(when (string-match "^#" line)
(insert "\n" line)))
(goto-char pos)
(org-table-recalculate 'all))
(org-collector-error (widen) (error "%s" er))
(error (widen) (error "%s" er))))
(defun org-propview-eval-w-props (props body)
"evaluate the BODY-FORMS binding the variables using the
variables and values specified in props"
(condition-case nil ;; catch any errors
(eval `(let ,(mapcar
(lambda (pair) (list (intern (car pair)) (cdr pair)))
props)
,body))
(error nil)))
(defun org-propview-get-with-inherited (&optional inherit)
(append
(org-entry-properties)
(delq nil
(mapcar (lambda (i)
(let* ((n (symbol-name i))
(p (org-entry-get (point) n 'do-inherit)))
(when p (cons n p))))
inherit))))
(defun org-propview-collect (cols stringformat &optional conds match scope inherit colnames)
(interactive)
;; collect the properties from every header
(let* ((header-props
(let ((org-trust-scanner-tags t) alst)
(org-map-entries
(quote (cons (cons "ITEM" (org-get-heading t))
(org-propview-get-with-inherited inherit)))
match scope)))
;; read property values
(header-props
(mapcar (lambda (props)
(mapcar (lambda (pair)
(cons (car pair) (org-babel-read (cdr pair))))
props))
header-props))
;; collect all property names
(prop-names
(mapcar 'intern (delete-dups
(apply 'append (mapcar (lambda (header)
(mapcar 'car header))
header-props))))))
(append
(list
(if colnames colnames (mapcar (lambda (el) (format stringformat el)) cols))
'hline) ;; ------------------------------------------------
(mapcar ;; calculate the value of the column for each header
(lambda (props) (mapcar (lambda (col)
(let ((result (org-propview-eval-w-props props col)))
(if result result org-propview-default-value)))
cols))
(if conds
;; eliminate the headers which don't satisfy the property
(delq nil
(mapcar
(lambda (props)
(if (and-rest (mapcar
(lambda (col)
(org-propview-eval-w-props props col))
conds))
props))
header-props))
header-props)))))
(defun org-propview-to-table (results stringformat)
;; (message (format "cols:%S" cols))
(orgtbl-to-orgtbl
(mapcar
(lambda (row)
(if (equal row 'hline)
'hline
(mapcar (lambda (el) (format stringformat el)) row)))
(delq nil results)) '()))
(provide 'org-collector)
;;; org-collector ends here