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1 | (require 'gnus-start) |
2 | (require 'gnus-util) | |
3 | (require 'gnus-range) | |
4 | (require 'gnus-agent) | |
5 | ||
6 | ; Oort Gnus v0.08 - This release updated agent to no longer use | |
7 | ; history file and to support a compressed alist. | |
8 | ||
9 | (defvar gnus-agent-compressed-agentview-search-only nil) | |
10 | ||
11 | (defun gnus-agent-convert-to-compressed-agentview (converting-to) | |
12 | "Iterates over all agentview files to ensure that they have been | |
13 | converted to the compressed format." | |
14 | ||
15 | (let ((search-in (list gnus-agent-directory)) | |
16 | here | |
17 | members | |
18 | member | |
19 | converted-something) | |
20 | (while (setq here (pop search-in)) | |
21 | (setq members (directory-files here t)) | |
22 | (while (setq member (pop members)) | |
23 | (cond ((string-match "/\\.\\.?$" member) | |
24 | nil) | |
25 | ((file-directory-p member) | |
26 | (push member search-in)) | |
27 | ((equal (file-name-nondirectory member) ".agentview") | |
28 | (setq converted-something | |
29 | (or (gnus-agent-convert-agentview member) | |
30 | converted-something)))))) | |
31 | ||
32 | (if converted-something | |
33 | (gnus-message 4 "Successfully converted Gnus %s offline (agent) files to %s" gnus-newsrc-file-version converting-to)))) | |
34 | ||
35 | (defun gnus-agent-convert-to-compressed-agentview-prompt () | |
36 | (catch 'found-file-to-convert | |
37 | (let ((gnus-agent-compressed-agentview-search-only t)) | |
38 | (gnus-agent-convert-to-compressed-agentview nil)))) | |
39 | ||
40 | (gnus-convert-mark-converter-prompt 'gnus-agent-convert-to-compressed-agentview 'gnus-agent-convert-to-compressed-agentview-prompt) | |
41 | ||
42 | (defun gnus-agent-convert-agentview (file) | |
43 | "Load FILE and do a `read' there." | |
44 | (with-temp-buffer | |
45 | (nnheader-insert-file-contents file) | |
46 | (goto-char (point-min)) | |
47 | (let ((inhibit-quit t) | |
48 | (alist (read (current-buffer))) | |
49 | (version (condition-case nil (read (current-buffer)) | |
50 | (end-of-file 0))) | |
51 | changed-version | |
52 | history-file) | |
53 | ||
54 | (cond | |
55 | ((= version 0) | |
56 | (let (entry | |
57 | (gnus-command-method nil)) | |
58 | (mm-disable-multibyte) ;; everything is binary | |
59 | (erase-buffer) | |
60 | (insert "\n") | |
61 | (let ((file (concat (file-name-directory file) "/history"))) | |
62 | (when (file-exists-p file) | |
63 | (nnheader-insert-file-contents file) | |
64 | (setq history-file file))) | |
65 | ||
66 | (goto-char (point-min)) | |
67 | (while (not (eobp)) | |
68 | (if (and (looking-at | |
69 | "[^\t\n]+\t\\([0-9]+\\)\t\\([^ \n]+\\) \\([0-9]+\\)") | |
70 | (string= (gnus-agent-article-name ".agentview" (match-string 2)) | |
71 | file) | |
72 | (setq entry (assoc (string-to-number (match-string 3)) alist))) | |
73 | (setcdr entry (string-to-number (match-string 1)))) | |
74 | (forward-line 1)) | |
75 | (setq changed-version t))) | |
76 | ((= version 1) | |
77 | (setq changed-version t))) | |
78 | ||
79 | (when changed-version | |
80 | (when gnus-agent-compressed-agentview-search-only | |
81 | (throw 'found-file-to-convert t)) | |
82 | ||
83 | (erase-buffer) | |
84 | (let ((compressed nil)) | |
85 | (mapcar (lambda (pair) | |
86 | (let* ((article-id (car pair)) | |
87 | (day-of-download (cdr pair)) | |
88 | (comp-list (assq day-of-download compressed))) | |
89 | (if comp-list | |
90 | (setcdr comp-list | |
91 | (cons article-id (cdr comp-list))) | |
92 | (setq compressed | |
93 | (cons (list day-of-download article-id) | |
94 | compressed))) | |
95 | nil)) alist) | |
96 | (mapcar (lambda (comp-list) | |
97 | (setcdr comp-list | |
98 | (gnus-compress-sequence | |
99 | (nreverse (cdr comp-list))))) | |
100 | compressed) | |
101 | (princ compressed (current-buffer))) | |
102 | (insert "\n2\n") | |
103 | (write-file file) | |
104 | (when history-file | |
105 | (delete-file history-file)) | |
106 | t)))) | |
107 | ||
108 | ;; End of Oort Gnus v0.08 updates | |
109 | ||
110 | ;; No Gnus v0.3 - This release provides a mechanism for upgrading gnus | |
111 | ;; from previous versions. Therefore, the previous | |
112 | ;; hacks to handle a gnus-agent-expire-days that | |
113 | ;; specifies a list of values can be removed. | |
114 | ||
115 | (defun gnus-agent-unlist-expire-days (converting-to) | |
116 | (when (listp gnus-agent-expire-days) | |
117 | (let (buffer) | |
118 | (unwind-protect | |
119 | (save-window-excursion | |
120 | (setq buffer (gnus-get-buffer-create " *Gnus agent upgrade*")) | |
121 | (set-buffer buffer) | |
122 | (erase-buffer) | |
123 | (insert "The definition of gnus-agent-expire-days has been changed.\nYou currently have it set to the list:\n ") | |
124 | (gnus-pp gnus-agent-expire-days) | |
125 | ||
126 | (insert "\nIn order to use version '" converting-to "' of gnus, you will need to set\n") | |
127 | (insert "gnus-agent-expire-days to an integer. If you still wish to set different\n") | |
128 | (insert "expiration days to individual groups, you must instead set the\n") | |
129 | (insert "'agent-days-until-old group and/or topic parameter.\n") | |
130 | (insert "\n") | |
131 | (insert "If you would like, gnus can iterate over every group comparing its name to the\n") | |
132 | (insert "regular expressions that you currently have in gnus-agent-expire-days. When\n") | |
133 | (insert "gnus finds a match, it will update that group's 'agent-days-until-old group\n") | |
134 | (insert "parameter to the value associated with the regular expression.\n") | |
135 | (insert "\n") | |
136 | (insert "Whether gnus assigns group parameters, or not, gnus will terminate with an\n") | |
137 | (insert "ERROR as soon as this function completes. The reason is that you must\n") | |
138 | (insert "manually edit your configuration to either not set gnus-agent-expire-days or\n") | |
139 | (insert "to set it to an integer before gnus can be used.\n") | |
140 | (insert "\n") | |
141 | (insert "Once you have successfully edited gnus-agent-expire-days, gnus will be able to\n") | |
142 | (insert "execute past this function.\n") | |
143 | (insert "\n") | |
144 | (insert "Should gnus use gnus-agent-expire-days to assign\n") | |
145 | (insert "agent-days-until-old parameters to individual groups? (Y/N)") | |
146 | ||
147 | (switch-to-buffer buffer) | |
148 | (beep) | |
149 | (beep) | |
150 | ||
151 | (let ((echo-keystrokes 0) | |
152 | c) | |
153 | (while (progn (setq c (read-char-exclusive)) | |
154 | (cond ((or (eq c ?y) (eq c ?Y)) | |
155 | (save-excursion | |
156 | (let ((groups (gnus-group-listed-groups))) | |
157 | (while groups | |
158 | (let* ((group (pop groups)) | |
159 | (days gnus-agent-expire-days) | |
160 | (day (catch 'found | |
161 | (while days | |
162 | (when (eq 0 (string-match | |
163 | (caar days) | |
164 | group)) | |
165 | (throw 'found (cadar days))) | |
166 | (setq days (cdr days))) | |
167 | nil))) | |
168 | (when day | |
169 | (gnus-group-set-parameter group 'agent-days-until-old | |
170 | day)))))) | |
171 | nil | |
172 | ) | |
173 | ((or (eq c ?n) (eq c ?N)) | |
174 | nil) | |
175 | (t | |
176 | t)))))) | |
177 | (kill-buffer buffer)) | |
178 | (error "Change gnus-agent-expire-days to an integer for gnus to start.")))) | |
179 | ||
180 | ;; The gnus-agent-unlist-expire-days has its own conversion prompt. | |
181 | ;; Therefore, hide the default prompt. | |
182 | (gnus-convert-mark-converter-prompt 'gnus-agent-unlist-expire-days t) | |
183 | ||
184 | (defun gnus-agent-unhook-expire-days (converting-to) | |
185 | "Remove every lambda from gnus-group-prepare-hook that mention the | |
186 | symbol gnus-agent-do-once in their definition. This should NOT be | |
187 | necessary as gnus-agent.el no longer adds them. However, it is | |
188 | possible that the hook was persistently saved." | |
189 | (let ((h t)) ; iterate from bgn of hook | |
190 | (while h | |
191 | (let ((func (progn (when (eq h t) | |
192 | ;; init h to list of functions | |
193 | (setq h (cond ((listp gnus-group-prepare-hook) | |
194 | gnus-group-prepare-hook) | |
195 | ((boundp 'gnus-group-prepare-hook) | |
196 | (list gnus-group-prepare-hook))))) | |
197 | (pop h)))) | |
198 | ||
199 | (when (cond ((eq (type-of func) 'compiled-function) | |
200 | ;; Search def. of compiled function for gnus-agent-do-once string | |
201 | (let* (definition | |
202 | print-level | |
203 | print-length | |
204 | (standard-output | |
205 | (lambda (char) | |
206 | (setq definition (cons char definition))))) | |
207 | (princ func) ; populates definition with reversed list of characters | |
208 | (let* ((i (length definition)) | |
209 | (s (make-string i 0))) | |
210 | (while definition | |
211 | (aset s (setq i (1- i)) (pop definition))) | |
212 | ||
213 | (string-match "\\bgnus-agent-do-once\\b" s)))) | |
214 | ((listp func) | |
215 | (eq (cadr (nth 2 func)) 'gnus-agent-do-once) ; handles eval'd lambda | |
216 | )) | |
217 | ||
218 | (remove-hook 'gnus-group-prepare-hook func) | |
219 | ;; I don't what remove-hook is going to actually do to the | |
220 | ;; hook list so start over from the beginning. | |
221 | (setq h t)))))) | |
222 | ||
223 | ;; gnus-agent-unhook-expire-days is safe in that it does not modify | |
224 | ;; the .newsrc.eld file. | |
225 | (gnus-convert-mark-converter-prompt 'gnus-agent-unhook-expire-days t) | |
226 | ||
227 | ;;; arch-tag: 845c7b8a-88f7-4468-b8d7-94e8fc72cf1a |