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
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
|
;;; avandu.el --- Gateway to Tiny Tiny RSS
;; Copyright (C) 2012 Tom Willemsen <tom@ryuslash.org>
;; Author: Tom Willemsen <tom@ryuslash.org>
;; Created: Jul 22, 2012
;; Version: 0
;; Keywords: net
;; Permission to use, copy, modify, and distribute this software for any
;; purpose with or without fee is hereby granted, provided that the
;; above copyright notice and this permission notice appear in all
;; copies.
;; THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
;; WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
;; WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
;; AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
;; CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
;; OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
;; NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
;; CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
;;; Commentary:
;; Avandu is an emacs mode that connects to a Tiny Tiny RSS instance
;; and allows you to read the feeds it has gathered locally.
;; The simplest way to install it is to use package.el:
;; (package-install-file "/path/to/avandu.el")
;; For further information I would like to refer you to the avandu
;; info file.
;; Once installation is out of the way, it should get a value for
;; `avandu-tt-rss-api-url' (for example: http://tt-rss.org/demo/api/)
;; and then run `avandu-overview'.
;; Once in avandu:overview mode some key bindings will be:
;; - `r' :: Mark article at point as read.
;; - `o' :: Open article at point in a browser. Uses `browse-url'.
;; - `n' :: Next article.
;; - `p' :: Previous article.
;;; Code:
(require 'json)
(require 'url)
(require 'simple)
(defconst avandu-entity-replacement-alist
'(("hellip" . 8230)
("qout" . 34)
("amp" . 38)
("nbsp" . 32))
"What to replace the part between & and ; of HTML entities with
names.")
(defconst avandu-overview-mode-name "Avandu:Overview"
"The default name for `avandu-overview-mode'.")
(defconst avandu-version 0
"The current version of avandu.")
;; Customization
(defgroup avandu nil
"Tiny Tiny RSS interface for emacs."
:group 'applications)
;; Faces
(defface avandu-overview-excerpt
'((t (:inherit shadow :slant italic)))
"Face for article excerpts in avandu overview."
:group 'avandu)
(defface avandu-overview-feed
'((((class color)
(background dark))
(:foreground "white" :height 1.2 :bold t :family "sans"))
(((class color)
(background light))
(:foreground "black" :height 1.2 :bold t :family "sans")))
"Face for feed titles in avandu overview."
:group 'avandu)
(defface avandu-overview-read-article
'((((class color)
(background dark))
(:foreground "white" :weight normal :family "sans"))
(((class color)
(background light))
(:foreground "black" :weight normal :family "sans")))
"Face for read article titles in avandu overview."
:group 'avandu)
(defface avandu-overview-unread-article
'((((class color)
(background dark))
(:foreground "orange3" :weight bold :family "sans"))
(((class color)
(background light))
(:foregroung "red4" :weight bold :family "sans")))
"Face for unread article titles in avandu overview."
:group 'avandu)
;; User options
(defcustom avandu-tt-rss-api-url nil
"URL of your Tiny Tiny RSS instance. For example:
http://tt-rss.org/demo/api/"
:group 'avandu
:type 'string)
(defcustom avandu-user nil
"Username of your Tiny Tiny RSS account."
:group 'avandu
:type 'string)
;; Variables
(defvar avandu--session-id nil
"*internal* Session id for avandu.")
(defvar avandu-article-button-map
(let ((map (make-sparse-keymap)))
(set-keymap-parent map button-map)
(define-key map "o" 'avandu-browse-article)
(define-key map "r" 'avandu-mark-article-read)
map)
"Keymap for articles in `avandu-overview-mode'.")
(defvar avandu-feed-button-map
(let ((map (make-sparse-keymap)))
(set-keymap-parent map button-map)
(define-key map "c" 'avandu-feed-catchup)
map)
"Keymap for feeds in `avandu-overview-mode'.")
(defvar avandu-overview-map
(let ((map (make-sparse-keymap)))
(set-keymap-parent map special-mode-map)
(define-key map "n" 'avandu-next-article)
(define-key map "N" 'avandu-next-feed)
(define-key map "p" 'avandu-previous-article)
(define-key map "P" 'avandu-previous-feed)
map)
"Keymap for `avandu-overview-mode'.")
(defvar avandu-password nil
"Password for your Tiny Tiny RSS account.")
;; Macros
(defmacro avandu--next-button-of-type (direction type)
"Go DIRECTION and find the next button of a TYPE."
(let ((prop (case type
(feed 'feed-id)
(article 'article-id)
(t (error "Invalid type"))))
(next-point-function (case direction
(forward 'point-min)
(backward 'point-max)
(t (error "Invalid direction"))))
(next-button-function (case direction
(forward 'next-button)
(backward 'previous-button)
(t (error "Invalid direction")))))
`(let ((pos (point))
found-value)
(while (not found-value)
(let ((button (,next-button-function pos)))
(unless button
(setq pos (,next-point-function)
button (or (button-at pos)
(,next-button-function pos))))
(setq found-value (button-get button ',prop)
pos (overlay-start button))))
(goto-char pos))))
(defmacro avandu-getset (var prompt &optional passwdp)
"Ask the user for, and then save, VAR with PROMPT. Use
`read-passwd' if PASSWDP and `read-string' otherwise."
`(or ,var (setq ,var (,(if passwdp 'read-passwd 'read-string)
,prompt))))
;; Internal
(defun avandu--check-login ()
"Check to see if we're (still) logged in, try to login
otherwise. Signals an error if we're not logged in *and* login
was unsuccesful."
(unless (or (and avandu--session-id (avandu-logged-in-p))
(avandu-login))
(avandu--clear-data)
(error "Could not log in to tt-rss")))
(defun avandu--clean-text (text)
"Go through TEXT and remove any trailing and leading whitespace
from it, then look for any HTML entities and either replace them
with their char value or with the value in
`avandu-entity-replacement-alist'."
(with-temp-buffer
(insert text)
(while (re-search-forward
"\\`[[:space:][:cntrl:]]+\\|[[:space:][:cntrl:]]+\\'" nil t)
(replace-match ""))
(goto-char (point-min))
(while (search-forward "&" nil t)
(let ((pos (point)))
(save-excursion
(when (search-forward ";" nil t)
(let* ((sstring (buffer-substring pos (1- (point))))
(char-code
(if (= (char-after pos) ?#)
(unless (string-match-p "[^[:digit:]]"
(substring sstring 1))
(string-to-number (substring sstring 1)))
(assoc sstring avandu-entity-replacement-alist))))
(when char-code
(delete-region (1- pos) (point))
(insert-char (if (consp char-code)
(cdr char-code)
char-code) 1)))))))
(setq text (buffer-string)))
text)
(defun avandu--clear-data ()
"Clean up login data. This makes for a clean slate next time."
(setq avandu-user nil
avandu--session-id nil)
(clear-string avandu-password))
(defun avandu--get-session-id (results)
"Get the session id from RESULTS."
(cdr (assq 'session_id (assq 'content results))))
(defun avandu--get-status-id (results)
"Get the status id from RESULTS."
(cdr (assq 'status results)))
(defun avandu--insert-article-excerpt (excerpt)
"Insert the excerpt of an article."
(let ((start-pos (point))
end-pos
(text (replace-regexp-in-string
"[ \t\n]*$" "" (avandu--clean-text excerpt))))
(unless (or (not text) (string= text ""))
(insert
(propertize
text
'face 'avandu-overview-excerpt))
(indent-region start-pos (point) tab-width)
(fill-region start-pos (point))
(insert-char ?\n 1))))
(defun avandu--insert-article-title (id link title)
"Insert a button with the label TITLE and store ID and LINK in
the article-id and link properties, respectively."
(insert-button
(replace-regexp-in-string "^[ \n\t]*\\|[ \n\t]*$" "" title)
'face 'avandu-overview-unread-article
'article-id id
'link link
'keymap avandu-article-button-map
'action #'(lambda (button)
(message "%s" (button-get button 'link))))
(insert-char ?\n 1))
(defun avandu--insert-feed-title (id title)
"Insert a button with the label TITLE and store ID in the
feed-id property."
(unless (eq (point) (point-min)) (insert-char ?\n 1))
(insert-button
(replace-regexp-in-string "^[ \n\t]*\\|[ \n\t]*$" "" title)
'face 'avandu-overview-feed
'feed-id id
'keymap avandu-feed-button-map
'action #'(lambda (button)
(message "%s" (button-label button))))
(insert-char ?\n 2))
(defun avandu--send-command (data)
"Send a command with parameters DATA to tt-rss. The current
session-id is added to the request and then DATA is passed on to
`json-encode'.
DATA should be an association list with at least an OP value.
For example:
(avandu--send-command '((op . \"isLoggedIn\")))
This function returns the result of `json-read' passed over the
returned json."
(let* ((url-request-data
(json-encode
(if avandu--session-id
(append `((sid . ,avandu--session-id))
data)
data)))
(url-request-method "POST")
(buffer (url-retrieve-synchronously avandu-tt-rss-api-url))
result)
(with-current-buffer buffer
(goto-char (point-min))
(search-forward "\n\n")
(setq result (json-read)))
(kill-buffer buffer)
result))
(defun avandu-categories (&optional unread)
"Get the created categories. If UNREAD is non-nil only get
categories with feeds with unread articles in them."
(cdr (assq 'content
(avandu--send-command
`((op . "getCategories")
,@(when unread `((unread_only . ,unread))))))))
(defun avandu-feeds (&optional category unread limit offset)
"Get the subscribed feeds. If CATEGORY has been specified show
only the feeds in CATEGORY. If UNREAD has been specified only
show feeds with unread articles in them. Only fets LIMIT
number of feeds, starting from OFFSET.
There are a number of special category IDs:
0 -- Uncategorized feeds
-1 -- Special (e.g. Starred, Published, Archived, etc.) feeds
-2 -- Labels
-3 -- All feeds, excluding virtual feeds (e.g. Labels and such)
-4 -- All feeds, including virtual feeds"
(cdr (assq 'content
(avandu--send-command
`((op . "getFeeds")
,@(when category `((cat_id . ,category)))
,@(when unread `((unread_only . ,unread)))
,@(when limit `((limit . ,limit)))
,@(when offset `((offset . ,offset))))))))
(defun avandu-headlines (feed-id &rest plist)
"Get a list of headlines from Tiny Tiny RSS from the feed
identified by FEED-ID. Options about what to get can be
specified in the form of a property list PLIST.
If `:limit' is specified only get that many headlines, and if
`:skip' has been specified skip that many headlines first.
If `:is-cat' is non-nil, that means FEED-ID is actually the ID of
a category.
When `:show-excerpt' is non-nil, send back an excerpt along with
the headline and if `:show-content' is non-nil send along the
entire article.
`:view-mode' determines what type of headlines are sent back:
all_articles -- All articles found are sent back.
unread -- Only unread articles are sent back.
adaptive -- ?
marked -- ?
updated -- ?
If `:include-attatchments' is non-nil, send along any files
enclosed in the articles.
If `:since-id' is specified, send only articles with a FEED-ID
greater than this.
There are some special feed IDs:
-1 -- Starred feeds
-2 -- Published feeds
-3 -- Fresh feeds (less than X hours old)
-4 -- All articles
0 -- Archived articles
IDs < -10 -- Labels"
(let ((limit (plist-get plist :limit))
(skip (plist-get plist :skip))
(is-cat (plist-get plist :is-cat))
(show-excerpt (plist-get plist :show-excerpt))
(show-content (plist-get plist :show-content))
(view-mode (plist-get plist :view-mode))
(include-attachments (plist-get plist :include-attachments))
(since-id (plist-get plist :since-id)))
(cdr (assq 'content
(avandu--send-command
`((op . "getHeadlines")
(feed_id . ,feed-id)
,@(when limit `((limit . ,limit)))
,@(when skip `((skip . ,skip)))
,@(when is-cat `((is_cat . ,is-cat)))
,@(when show-excerpt `((show_excerpt . ,show-excerpt)))
,@(when show-content `((show_content . ,show-content)))
,@(when view-mode `((view_mode . ,view-mode)))
,@(when include-attachments `((include_attachments . ,include-attachments)))
,@(when since-id `((since_id . ,since-id)))))))))
(defun avandu-update-article (article-ids mode field &optional data)
"Update the status of FIELD to MODE for the articles identified
by ARTICLE-IDS.
ARTICLE-IDS should either be a single integer or a
comma-separated list of integers.
MODE should be one of:
0 -- Set to false
1 -- Set to true
2 -- Toggle
FIELD should be one of:
0 -- Starred
1 -- Published
2 -- Unread
3 -- Article Note
When updating FIELD 3 DATA functions as the note's contents."
(avandu--send-command `((op . "updateArticle")
(article_ids . ,article-ids)
(mode . ,mode)
(field . ,field)
,@(when data `((data . ,data))))))
;; Commands
(defun avandu-browse-article ()
"Browse the current button's article url."
(interactive)
(let ((button (button-at (point))))
(browse-url (button-get button 'link))
(avandu-mark-article-read button)))
(defun avandu-feed-catchup ()
"Send a request to tt-rss to \"Catch up\" with a feed. This
means that all the (unread) articles in a feed will be marked
as read. After having completed this request the overview is
reloaded."
(interactive)
(let* ((button (button-at (point)))
(id (button-get button 'feed-id)))
(avandu--send-command `((op . "catchupFeed")
(feed_id . ,id))))
(revert-buffer))
(defun avandu-logged-in-p ()
"Send a request to tt-rss to see if we're (still) logged
in. This function returns t if we are, or nil if we're not."
(let* ((response (avandu--send-command '((op . "isLoggedIn"))))
(result (cdr (assq 'status (assq 'content response)))))
(if (eq result :json-false)
nil
result)))
(defun avandu-login ()
"Send a request to log in to tt-rss. If `avandu-user' or
`avandu-password' have not been specified they will be asked for
and saved in memory. This function returns t on succes, nil
otherwise."
(interactive)
(let ((result (avandu--send-command
`((op . "login")
(user . ,(avandu-getset avandu-user "Username: "))
(password
. ,(avandu-getset avandu-password "Password: " t))))))
(if (eq (avandu--get-status-id result) 0)
(progn
(setq avandu--session-id (avandu--get-session-id result))
t)
nil)))
(defun avandu-logout ()
"Logout from Tiny Tiny RSS."
(interactive)
(avandu--send-command '((op . "logout")))
(avandu--clear-data))
(defun avandu-mark-article-read (&optional button)
"Send a request to tt-rss to mark an article as read.
BUTTON, if given, should be a button widget, as created by
`button-insert' and such, which contains FEED-ID. If BUTTON is
nil, it will be assumed that `point' is currently within the
bounds of a button."
(interactive)
(let* ((button (or button (button-at (point))))
(id (button-get button 'article-id)))
(avandu-update-article id 0 2)
(button-put button 'face 'avandu-overview-read-article))
(avandu-next-article))
(defun avandu-new-articles-count ()
"Send a request to tt-rss for the total number of unread
feeds."
(interactive)
(avandu--check-login)
(let* ((result (avandu--send-command '((op . "getUnread"))))
(count (cdr (assq 'unread (assq 'content result)))))
(when (called-interactively-p 'any)
(message "There are %s unread articles" count))
count))
(defun avandu-next-article ()
"Search forward for the next article."
(interactive)
(avandu--next-button-of-type forward article))
(defun avandu-next-feed ()
"Go forward and find the next feed."
(interactive)
(avandu--next-button-of-type forward feed))
(defun avandu-previous-article ()
"Go backward and find the next article."
(interactive)
(avandu--next-button-of-type backward article))
(defun avandu-previous-feed ()
"Go backward and find the next feed."
(interactive)
(avandu--next-button-of-type backward feed))
(defun avandu-tt-rss-api-level ()
"Get the API level of your Tiny Tiny RSS instance."
(interactive)
(let ((level (cdr (assq 'level
(assq 'content
(avandu--send-command
'((op . "getApiLevel"))))))))
(when (called-interactively-p 'any)
(message "API Level: %d" level))
level))
(defun avandu-tt-rss-version ()
"Get the version of your Tiny Tiny RSS instance."
(interactive)
(let ((version (cdr (assq 'version
(assq 'content
(avandu--send-command
'((op . "getVersion"))))))))
(when (called-interactively-p 'any)
(message "Tiny Tiny RSS Version: %s" version))
version))
;; Overview
(define-derived-mode avandu-overview-mode special-mode
avandu-overview-mode-name
"Major mode fo the avandu overview screen.
This screen shows the articles categorized by feed as a list. It
doesn't sort the list, so you'll have to set that up in tt-rss.
\\{avandu-overview-map}
\\<avandu-overview-map>"
(use-local-map avandu-overview-map)
(set (make-local-variable 'revert-buffer-function)
#'(lambda (ignore-auto noconfirm) (avandu-overview)))
(setq mode-name (format "%s[%s]"
avandu-overview-mode-name
(avandu-new-articles-count))))
;;;###autoload
(defun avandu-overview ()
"Request the headlines of unread articles and list them grouped
by feed."
(interactive)
(avandu--check-login)
(let ((buffer (get-buffer-create "*avandu-overview*"))
(result (avandu-headlines -4 :show-excerpt t :view-mode "unread"))
feed-id)
(with-current-buffer buffer
(setq buffer-read-only nil)
(erase-buffer)
(goto-char (point-min))
(mapc #'(lambda (elt)
(unless (equal feed-id (assq 'feed_id elt))
(avandu--insert-feed-title
(cdr (assq 'feed_id elt))
(cdr (assq 'feed_title elt))))
(setq feed-id (assq 'feed_id elt))
(avandu--insert-article-title
(cdr (assq 'id elt))
(cdr (assq 'link elt))
(cdr (assq 'title elt)))
(avandu--insert-article-excerpt
(cdr (assq 'excerpt elt))))
result)
(setq buffer-read-only t)
(goto-char (point-min))
(avandu-overview-mode))
(switch-to-buffer buffer)))
(provide 'avandu)
;;; avandu.el ends here
;; ((feed_title . "Identity at Mozilla")
;; (labels . [])
;; (tags . [""])
;; (feed_id . "6")
;; (link . "http://identity.mozilla.com/post/13619011637")
;; (title . "BrowserID this week: better, faster, more secure.")
;; (is_updated . :json-false)
;; (updated . 1322795401)
;; (published . :json-false)
;; (marked . :json-false)
;; (unread . t)
;; (id . 109))
;; (login user password)
;; (get-article article-id)
;; (get-config icons-dir icons-url daemon-is-running num-feeds)
;; (update-feed feed-id)
;; (get-pref pref-name)
;; (catchup-feed feed-id categoryp)
;; (get-counters output-mode)
;; (get-labels article-id)
;; (set-article-label article-ids label-id assingp)
|