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8c8b8430 | 1 | ;;; url-history.el --- Global history tracking for URL package |
8c8b8430 SM |
2 | ;; Keywords: comm, data, processes, hypermedia |
3 | ||
4 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
5 | ;;; Copyright (c) 1993 - 1996 by William M. Perry <wmperry@cs.indiana.edu> | |
6 | ;;; Copyright (c) 1996 - 1999 Free Software Foundation, Inc. | |
7 | ;;; | |
8 | ;;; This file is part of GNU Emacs. | |
9 | ;;; | |
10 | ;;; GNU Emacs is free software; you can redistribute it and/or modify | |
11 | ;;; it under the terms of the GNU General Public License as published by | |
12 | ;;; the Free Software Foundation; either version 2, or (at your option) | |
13 | ;;; any later version. | |
14 | ;;; | |
15 | ;;; GNU Emacs is distributed in the hope that it will be useful, | |
16 | ;;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | ;;; GNU General Public License for more details. | |
19 | ;;; | |
20 | ;;; You should have received a copy of the GNU General Public License | |
21 | ;;; along with GNU Emacs; see the file COPYING. If not, write to the | |
22 | ;;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
23 | ;;; Boston, MA 02111-1307, USA. | |
24 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
25 | ||
26 | ;; This can get a recursive require. | |
27 | ;;(require 'url) | |
28 | (eval-when-compile (require 'cl)) | |
29 | (require 'url-parse) | |
30 | (autoload 'url-do-setup "url") | |
31 | ||
32 | (defgroup url-history nil | |
33 | "History variables in the URL package" | |
34 | :prefix "url-history" | |
35 | :group 'url) | |
36 | ||
37 | (defcustom url-history-track nil | |
38 | "*Controls whether to keep a list of all the URLS being visited. | |
39 | If non-nil, url will keep track of all the URLS visited. | |
40 | If eq to `t', then the list is saved to disk at the end of each emacs | |
41 | session." | |
42 | :type 'boolean | |
43 | :group 'url-history) | |
44 | ||
45 | (defcustom url-history-file nil | |
46 | "*The global history file for the URL package. | |
47 | This file contains a list of all the URLs you have visited. This file | |
48 | is parsed at startup and used to provide URL completion." | |
49 | :type '(choice (const :tag "Default" :value nil) file) | |
50 | :group 'url-history) | |
51 | ||
52 | (defcustom url-history-save-interval 3600 | |
53 | "*The number of seconds between automatic saves of the history list. | |
54 | Default is 1 hour. Note that if you change this variable outside of | |
55 | the `customize' interface after `url-do-setup' has been run, you need | |
56 | to run the `url-history-setup-save-timer' function manually." | |
57 | :set (function (lambda (var val) | |
58 | (set-default var val) | |
59 | (and (featurep 'url) | |
60 | (fboundp 'url-history-setup-save-timer) | |
61 | (let ((def (symbol-function | |
62 | 'url-history-setup-save-timer))) | |
63 | (not (and (listp def) (eq 'autoload (car def))))) | |
64 | (url-history-setup-save-timer)))) | |
65 | :type 'integer | |
66 | :group 'url-history) | |
67 | ||
68 | (defvar url-history-timer nil) | |
69 | ||
70 | (defvar url-history-list nil | |
71 | "List of urls visited this session.") | |
72 | ||
73 | (defvar url-history-changed-since-last-save nil | |
74 | "Whether the history list has changed since the last save operation.") | |
75 | ||
76 | (defvar url-history-hash-table nil | |
77 | "Hash table for global history completion.") | |
78 | ||
79 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
80 | ;;;###autoload | |
81 | (defun url-history-setup-save-timer () | |
82 | "Reset the history list timer." | |
83 | (interactive) | |
84 | (cond | |
85 | ((featurep 'itimer) | |
86 | (ignore-errors (delete-itimer url-history-timer)) | |
87 | (setq url-history-timer nil) | |
88 | (if url-history-save-interval | |
89 | (setq url-history-timer | |
90 | (start-itimer "url-history-saver" 'url-history-save-history | |
91 | url-history-save-interval | |
92 | url-history-save-interval)))) | |
93 | ((fboundp 'run-at-time) | |
94 | (ignore-errors (cancel-timer url-history-timer)) | |
95 | (setq url-history-timer nil) | |
96 | (if url-history-save-interval | |
97 | (setq url-history-timer | |
98 | (run-at-time url-history-save-interval | |
99 | url-history-save-interval | |
100 | 'url-history-save-history)))) | |
101 | (t nil))) | |
102 | ||
103 | ;;;###autoload | |
104 | (defun url-history-parse-history (&optional fname) | |
105 | "Parse a history file stored in FNAME." | |
106 | ;; Parse out the mosaic global history file for completions, etc. | |
107 | (or fname (setq fname (expand-file-name url-history-file))) | |
108 | (cond | |
109 | ((not (file-exists-p fname)) | |
110 | (message "%s does not exist." fname)) | |
111 | ((not (file-readable-p fname)) | |
112 | (message "%s is unreadable." fname)) | |
113 | (t | |
114 | (condition-case nil | |
115 | (load fname nil t) | |
116 | (error (message "Could not load %s" fname))))) | |
117 | (if (not url-history-hash-table) | |
118 | (setq url-history-hash-table (make-hash-table :size 31 :test 'equal)))) | |
119 | ||
120 | (defun url-history-update-url (url time) | |
121 | (setq url-history-changed-since-last-save t) | |
122 | (puthash (if (vectorp url) (url-recreate-url url) url) time url-history-hash-table)) | |
123 | ||
124 | ;;;###autoload | |
125 | (defun url-history-save-history (&optional fname) | |
126 | "Write the global history file into `url-history-file'. | |
127 | The type of data written is determined by what is in the file to begin | |
128 | with. If the type of storage cannot be determined, then prompt the | |
129 | user for what type to save as." | |
130 | (interactive) | |
131 | (or fname (setq fname (expand-file-name url-history-file))) | |
132 | (cond | |
133 | ((not url-history-changed-since-last-save) nil) | |
134 | ((not (file-writable-p fname)) | |
135 | (message "%s is unwritable." fname)) | |
136 | (t | |
137 | (let ((make-backup-files nil) | |
138 | (version-control nil) | |
139 | (require-final-newline t)) | |
140 | (save-excursion | |
141 | (set-buffer (get-buffer-create " *url-tmp*")) | |
142 | (erase-buffer) | |
143 | (let ((count 0)) | |
144 | (maphash (function | |
145 | (lambda (key value) | |
146 | (while (string-match "[\r\n]+" key) | |
147 | (setq key (concat (substring key 0 (match-beginning 0)) | |
148 | (substring key (match-end 0) nil)))) | |
149 | (setq count (1+ count)) | |
150 | (insert "(puthash \"" key "\"" | |
151 | (if (not (stringp value)) " '" "") | |
152 | (prin1-to-string value) | |
153 | " url-history-hash-table)\n"))) | |
154 | url-history-hash-table) | |
155 | (goto-char (point-min)) | |
156 | (insert (format | |
157 | "(setq url-history-hash-table (make-hash-table :size %d :test 'equal))\n" | |
158 | (/ count 4))) | |
159 | (goto-char (point-max)) | |
160 | (insert "\n") | |
161 | (write-file fname)) | |
162 | (kill-buffer (current-buffer)))))) | |
163 | (setq url-history-changed-since-last-save nil)) | |
164 | ||
165 | (defun url-have-visited-url (url) | |
166 | (url-do-setup) | |
167 | (gethash url url-history-hash-table nil)) | |
168 | ||
169 | (defun url-completion-function (string predicate function) | |
170 | (url-do-setup) | |
171 | (cond | |
172 | ((eq function nil) | |
173 | (let ((list nil)) | |
174 | (maphash (function (lambda (key val) | |
175 | (setq list (cons (cons key val) | |
176 | list)))) | |
177 | url-history-hash-table) | |
178 | (try-completion string (nreverse list) predicate))) | |
179 | ((eq function t) | |
180 | (let ((stub (concat "^" (regexp-quote string))) | |
181 | (retval nil)) | |
182 | (maphash | |
183 | (function | |
184 | (lambda (url time) | |
185 | (if (string-match stub url) | |
186 | (setq retval (cons url retval))))) | |
187 | url-history-hash-table) | |
188 | retval)) | |
189 | ((eq function 'lambda) | |
190 | (and url-history-hash-table | |
191 | (gethash string url-history-hash-table) | |
192 | t)) | |
193 | (t | |
194 | (error "url-completion-function very confused.")))) | |
195 | ||
196 | (provide 'url-history) | |
e5566bd5 MB |
197 | |
198 | ;;; arch-tag: fbbbaf63-db36-4e88-bc9f-2939aa93afb2 |