summaryrefslogtreecommitdiff
path: root/lisp/delim-col.el
blob: 09858ed21dad16c568b7c9bc1cef12662da1f6e8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
;;; delim-col.el --- prettify all columns in a region or rectangle

;; Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004,
;;   2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.

;; Author: Vinicius Jose Latorre <viniciusjl@ig.com.br>
;; Maintainer: Vinicius Jose Latorre <viniciusjl@ig.com.br>
;; Version: 2.1
;; Keywords: internal
;; X-URL: http://www.emacswiki.org/cgi-bin/wiki/ViniciusJoseLatorre

;; This file is 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 of the License, 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:

;; delim-col helps to prettify columns in a text region or rectangle.
;;
;; To use it, make sure that this file is in load-path and insert in your
;; .emacs:
;;
;;    (require 'delim-col)
;;
;; If you have, for example, the following columns:
;;
;;	a	b	c	d
;;	aaaa	bb	ccc	ddddd
;;	aaa	bbb	cccc	dddd
;;	aa	bb	ccccccc	ddd
;;
;; And the following settings:
;;
;;    (setq delimit-columns-str-before "[ ")
;;    (setq delimit-columns-str-after " ]")
;;    (setq delimit-columns-str-separator ", ")
;;    (setq delimit-columns-before "")
;;    (setq delimit-columns-after "")
;;    (setq delimit-columns-separator "\t")
;;    (setq delimit-columns-format 'separator)
;;    (setq delimit-columns-extra t)
;;
;; If you select the lines above and type:
;;
;;    M-x delimit-columns-region RET
;;
;; You obtain the following result:
;;
;;	[ a   , b  , c      , d     ]
;;	[ aaaa, bb , ccc    , ddddd ]
;;	[ aaa , bbb, cccc   , dddd  ]
;;	[ aa  , bb , ccccccc, ddd   ]
;;
;; But if you select start from the very first b to the very last c and type:
;;
;;    M-x delimit-columns-rectangle RET
;;
;; You obtain the following result:
;;
;;	a	[ b  , c       ]	d
;;	aaaa	[ bb , ccc     ]	ddddd
;;	aaa	[ bbb, cccc    ]	dddd
;;	aa	[ bb , ccccccc ]	ddd
;;
;; Now, if we change settings to:
;;
;;    (setq delimit-columns-before "<")
;;    (setq delimit-columns-after ">")
;;
;; For the `delimit-columns-region' example above, the result is:
;;
;;	[ <a>   , <b>  , <c>      , <d>     ]
;;	[ <aaaa>, <bb> , <ccc>    , <ddddd> ]
;;	[ <aaa> , <bbb>, <cccc>   , <dddd>  ]
;;	[ <aa>  , <bb> , <ccccccc>, <ddd>   ]
;;
;; And for the `delimit-columns-rectangle' example above, the result is:
;;
;;	a	[ <b>  , <c>       ]	d
;;	aaaa	[ <bb> , <ccc>     ]	ddddd
;;	aaa	[ <bbb>, <cccc>    ]	dddd
;;	aa	[ <bb> , <ccccccc> ]	ddd
;;
;; Note that `delimit-columns-region' operates over all text region
;; selected, extending the region start to the beginning of line and the
;; region end to the end of line.  While `delimit-columns-rectangle'
;; operates over the text rectangle selected which rectangle diagonal is
;; given by the region start and end.
;;
;; See `delimit-columns-format' variable documentation for column formating.
;;
;; `delimit-columns-region' is useful when you have columns of text that
;; are not well aligned, like:
;;
;;	horse	apple	bus
;;	dog	pineapple	car
;;	porcupine	strawberry	airplane
;;
;; `delimit-columns-region' and `delimit-columns-rectangle' handle lines
;; with different number of columns, like:
;;
;;	horse	apple	bus
;;	dog	pineapple	car	EXTRA
;;	porcupine	strawberry	airplane
;;
;; Use `delimit-columns-customize' to customize delim-col package variables.

;;; Code:


;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; User Options:

(defgroup columns nil
  "Prettify columns."
  :link '(emacs-library-link :tag "Source Lisp File" "delim-col.el")
  :prefix "delimit-columns-"
  :group 'internal)

(defcustom delimit-columns-str-before ""
  "Specify a string to be inserted before all columns."
  :type '(string :tag "Before All Columns")
  :group 'columns)

(defcustom delimit-columns-str-separator ", "
  "Specify a string to be inserted between each column."
  :type '(string :tag "Between Each Column")
  :group 'columns)

(defcustom delimit-columns-str-after ""
  "Specify a string to be inserted after all columns."
  :type '(string :tag "After All Columns")
  :group 'columns)

(defcustom delimit-columns-before ""
  "Specify a string to be inserted before each column."
  :type '(string :tag "Before Each Column")
  :group 'columns)

(defcustom delimit-columns-after ""
  "Specify a string to be inserted after each column."
  :type '(string :tag "After Each Column")
  :group 'columns)

(defcustom delimit-columns-separator "\t"
  "Specify a regexp which separates each column."
  :type '(regexp :tag "Column Separator")
  :group 'columns)

(defcustom delimit-columns-format t
  "Specify how to format columns.

For examples below, consider:

   + columns `ccc' and `dddd',
   + the maximum column length for each column is 6,
   + and the following settings:
      (setq delimit-columns-before \"<\")
      (setq delimit-columns-after \">\")
      (setq delimit-columns-separator \":\")

Valid values are:

   nil		no formating.  That is, `delimit-columns-after' is followed by
		`delimit-columns-separator'.
		For example, the result is: \"<ccc>:<dddd>:\"

   t		align columns.  That is, `delimit-columns-after' is followed by
		`delimit-columns-separator' and then followed by spaces.
		For example, the result is: \"<ccc>:   <dddd>:  \"

   'separator	align separators.  That is, `delimit-columns-after' is followed
		by spaces and then followed by `delimit-columns-separator'.
		For example, the result is: \"<ccc>   :<dddd>  :\"

   'padding	format column by filling with spaces before
		`delimit-columns-after'.  That is, spaces are followed by
		`delimit-columns-after' and then followed by
		`delimit-columns-separator'.
		For example, the result is: \"<ccc   >:<dddd  >:\"

Any other value is treated as t."
  :type '(choice :menu-tag "Column Formating"
		 :tag "Column Formating"
		 (const :tag "No Formating" nil)
		 (const :tag "Column Alignment" t)
		 (const :tag "Separator Aligment" separator)
		 (const :tag "Column Padding" padding))
  :group 'columns)

(defcustom delimit-columns-extra t
  "Non-nil means that lines will have the same number of columns.

This has effect only when there are lines with different number of columns."
  :type '(boolean :tag "Lines With Same Number Of Column")
  :group 'columns)

(defcustom delimit-columns-start 0
  "Specify column number to start prettifing.

See also `delimit-columns-end' for documentation.

The following relation must hold:
   0 <= delimit-columns-start <= delimit-columns-end

The column number start from 0 and it's relative to the beginning of selected
region.  So if you selected a text region, the first column (column 0) is
located at beginning of line.  If you selected a text rectangle, the first
column (column 0) is located at left corner."
  :type '(integer :tag "Column Start")
  :group 'columns)

(defcustom delimit-columns-end 1000000
  "Specify column number to end prettifing.

See also `delimit-columns-start' for documentation.

The following relation must hold:
   0 <= delimit-columns-start <= delimit-columns-end

The column number start from 0 and it's relative to the beginning of selected
region.  So if you selected a text region, the first column (column 0) is
located at beginning of line.  If you selected a text rectangle, the first
column (column 0) is located at left corner."
  :type '(integer :tag "Column End")
  :group 'columns)


;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; User Commands:


;;;###autoload
(defun delimit-columns-customize ()
  "Customization of `columns' group."
  (interactive)
  (customize-group 'columns))


(defmacro delimit-columns-str (str)
  `(if (stringp ,str) ,str ""))


;;;###autoload
(defun delimit-columns-region (start end)
  "Prettify all columns in a text region.

START and END delimits the text region."
  (interactive "*r")
  (let ((delimit-columns-str-before
	 (delimit-columns-str delimit-columns-str-before))
	(delimit-columns-str-separator
	 (delimit-columns-str delimit-columns-str-separator))
	(delimit-columns-str-after
	 (delimit-columns-str delimit-columns-str-after))
	(delimit-columns-before
	 (delimit-columns-str delimit-columns-before))
	(delimit-columns-after
	 (delimit-columns-str delimit-columns-after))
	(delimit-columns-start
	 (if (and (integerp delimit-columns-start)
		  (>= delimit-columns-start 0))
	     delimit-columns-start
	   0))
	(delimit-columns-end
	 (if (integerp delimit-columns-end)
	     delimit-columns-end
	   1000000))
	(delimit-columns-limit (make-marker))
	(the-end (copy-marker end))
	delimit-columns-max)
    (when (<= delimit-columns-start delimit-columns-end)
      (save-excursion
	(goto-char start)
	(beginning-of-line)
	;; get maximum length for each column
	(and delimit-columns-format
	     (save-excursion
	       (while (< (point) the-end)
		 (delimit-columns-rectangle-max
		  (prog1
		      (point)
		    (end-of-line)))
		 (forward-char 1))))
	;; prettify columns
	(while (< (point) the-end)
	  (delimit-columns-rectangle-line
	   (prog1
	       (point)
	     (end-of-line)))
	  (forward-char 1))
	;; nullify markers
	(set-marker delimit-columns-limit nil)
	(set-marker the-end nil)))))


(require 'rect)


;;;###autoload
(defun delimit-columns-rectangle (start end)
  "Prettify all columns in a text rectangle.

START and END delimits the corners of text rectangle."
  (interactive "*r")
  (let ((delimit-columns-str-before
	 (delimit-columns-str delimit-columns-str-before))
	(delimit-columns-str-separator
	 (delimit-columns-str delimit-columns-str-separator))
	(delimit-columns-str-after
	 (delimit-columns-str delimit-columns-str-after))
	(delimit-columns-before
	 (delimit-columns-str delimit-columns-before))
	(delimit-columns-after
	 (delimit-columns-str delimit-columns-after))
	(delimit-columns-start
	 (if (and (integerp delimit-columns-start)
		  (>= delimit-columns-start 0))
	     delimit-columns-start
	   0))
	(delimit-columns-end
	 (if (integerp delimit-columns-end)
	     delimit-columns-end
	   1000000))
	(delimit-columns-limit (make-marker))
	(the-end (copy-marker end))
	delimit-columns-max)
    (when (<= delimit-columns-start delimit-columns-end)
      ;; get maximum length for each column
      (and delimit-columns-format
	   (save-excursion
	     (operate-on-rectangle 'delimit-columns-rectangle-max
				   start the-end nil)))
      ;; prettify columns
      (save-excursion
	(operate-on-rectangle 'delimit-columns-rectangle-line
			      start the-end nil))
      ;; nullify markers
      (set-marker delimit-columns-limit nil)
      (set-marker the-end nil))))


;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Internal Variables and Functions:


;; to avoid compilation gripes
(defvar delimit-columns-max nil)
(defvar delimit-columns-limit nil)


(defun delimit-columns-rectangle-max (startpos &optional ignore1 ignore2)
  (set-marker delimit-columns-limit (point))
  (goto-char startpos)
  (let ((ncol 1)
	origin values)
    ;; get current column length
    (while (progn
	     (setq origin (current-column))
	     (re-search-forward delimit-columns-separator
				delimit-columns-limit 'move))
      (save-excursion
	(goto-char (match-beginning 0))
	(setq values (cons (- (current-column) origin)
			   values)))
      (setq ncol (1+ ncol)))
    (setq values (cons (- (current-column) origin)
		       values))
    ;; extend delimit-columns-max, if needed
    (let ((index (length delimit-columns-max)))
      (and (> ncol index)
	   (let ((extend (make-vector ncol 0)))
	     (while (> index 0)
	       (setq index (1- index))
	       (aset extend index (aref delimit-columns-max index)))
	     (setq delimit-columns-max extend))))
    ;; get maximum column length
    (while values
      (setq ncol (1- ncol))
      (aset delimit-columns-max ncol (max (aref delimit-columns-max ncol)
					  (car values)))
      (setq values (cdr values)))))


(defun delimit-columns-rectangle-line (startpos &optional ignore1 ignore2)
  (let ((len  (length delimit-columns-max))
	(ncol 0)
	origin)
    (set-marker delimit-columns-limit (point))
    (goto-char startpos)
    ;; skip initial columns
    (while (and (< ncol delimit-columns-start)
		(< (point) delimit-columns-limit)
		(re-search-forward delimit-columns-separator
				   delimit-columns-limit 'move))
      (setq ncol (1+ ncol)))
    ;; insert first formating
    (insert delimit-columns-str-before delimit-columns-before)
    ;; Adjust all columns but last one
    (while (progn
	     (setq origin (current-column))
	     (and (< (point) delimit-columns-limit)
		  (re-search-forward delimit-columns-separator
				     delimit-columns-limit 'move)
		  (or (< ncol delimit-columns-end)
		      (progn
			(goto-char (match-beginning 0))
			nil))))
      (delete-region (match-beginning 0) (point))
      (delimit-columns-format
       (and delimit-columns-format
	    (make-string (- (aref delimit-columns-max ncol)
			    (- (current-column) origin))
			 ?\s)))
      (setq ncol (1+ ncol)))
    ;; Prepare last column spaces
    (let ((spaces (and delimit-columns-format
		       (make-string (- (aref delimit-columns-max ncol)
				       (- (current-column) origin))
				    ?\s))))
      ;; Adjust extra columns, if needed
      (and delimit-columns-extra
	   (while (and (< (setq ncol (1+ ncol)) len)
		       (<= ncol delimit-columns-end))
	     (delimit-columns-format spaces)
	     (setq spaces (and delimit-columns-format
			       (make-string (aref delimit-columns-max ncol)
					    ?\s)))))
      ;; insert last formating
      (cond ((null delimit-columns-format)
	     (insert delimit-columns-after delimit-columns-str-after))
	    ((eq delimit-columns-format 'padding)
	     (insert spaces delimit-columns-after delimit-columns-str-after))
	    (t
	     (insert delimit-columns-after spaces delimit-columns-str-after))
	    ))
    (goto-char (max (point) delimit-columns-limit))))


(defun delimit-columns-format (spaces)
  (cond ((null delimit-columns-format)
	 (insert delimit-columns-after
		 delimit-columns-str-separator
		 delimit-columns-before))
	((eq delimit-columns-format 'separator)
	 (insert delimit-columns-after
		 spaces
		 delimit-columns-str-separator
		 delimit-columns-before))
	((eq delimit-columns-format 'padding)
	 (insert spaces
		 delimit-columns-after
		 delimit-columns-str-separator
		 delimit-columns-before))
	(t
	 (insert delimit-columns-after
		 delimit-columns-str-separator
		 spaces
		 delimit-columns-before))
	))


;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;


(provide 'delim-col)


;; arch-tag: 1cc0c5c5-1b2a-43e4-9ba5-bf9441cfd1a9
;;; delim-col.el ends here