mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-12-24 10:38:38 +00:00
187 lines
6.6 KiB
EmacsLisp
187 lines
6.6 KiB
EmacsLisp
;;; url-history.el --- Global history tracking for URL package
|
|
|
|
;; Copyright (C) 1996-1999, 2004-2012 Free Software Foundation, Inc.
|
|
|
|
;; Keywords: comm, data, processes, hypermedia
|
|
|
|
;; 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:
|
|
|
|
;;; Code:
|
|
|
|
;; This can get a recursive require.
|
|
;;(require 'url)
|
|
(require 'url-parse)
|
|
(autoload 'url-do-setup "url")
|
|
|
|
(defgroup url-history nil
|
|
"History variables in the URL package."
|
|
:prefix "url-history"
|
|
:group 'url)
|
|
|
|
(defcustom url-history-track nil
|
|
"Controls whether to keep a list of all the URLs being visited.
|
|
If non-nil, the URL package will keep track of all the URLs visited.
|
|
If set to t, then the list is saved to disk at the end of each Emacs
|
|
session."
|
|
:set #'(lambda (var val)
|
|
(set-default var val)
|
|
(and (bound-and-true-p url-setup-done)
|
|
(url-history-setup-save-timer)))
|
|
:type '(choice (const :tag "off" nil)
|
|
(const :tag "on" t)
|
|
(const :tag "within session" 'session))
|
|
:group 'url-history)
|
|
|
|
(defcustom url-history-file nil
|
|
"The global history file for the URL package.
|
|
This file contains a list of all the URLs you have visited. This file
|
|
is parsed at startup and used to provide URL completion."
|
|
:type '(choice (const :tag "Default" :value nil) file)
|
|
:group 'url-history)
|
|
|
|
(defcustom url-history-save-interval 3600
|
|
"The number of seconds between automatic saves of the history list.
|
|
Default is 1 hour. Note that if you change this variable outside of
|
|
the `customize' interface after `url-do-setup' has been run, you need
|
|
to run the `url-history-setup-save-timer' function manually."
|
|
:set #'(lambda (var val)
|
|
(set-default var val)
|
|
(if (bound-and-true-p url-setup-done)
|
|
(url-history-setup-save-timer)))
|
|
:type 'integer
|
|
:group 'url-history)
|
|
|
|
(defvar url-history-timer nil)
|
|
|
|
(defvar url-history-changed-since-last-save nil
|
|
"Whether the history list has changed since the last save operation.")
|
|
|
|
(defvar url-history-hash-table (make-hash-table :size 31 :test 'equal)
|
|
"Hash table for global history completion.")
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
|
(defun url-history-setup-save-timer ()
|
|
"Reset the history list timer."
|
|
(interactive)
|
|
(condition-case nil
|
|
(cancel-timer url-history-timer)
|
|
(error nil))
|
|
(setq url-history-timer nil)
|
|
(if (and (eq url-history-track t) url-history-save-interval)
|
|
(setq url-history-timer (run-at-time url-history-save-interval
|
|
url-history-save-interval
|
|
'url-history-save-history))))
|
|
|
|
(defun url-history-parse-history (&optional fname)
|
|
"Parse a history file stored in FNAME."
|
|
;; Parse out the mosaic global history file for completions, etc.
|
|
(or fname (setq fname (expand-file-name url-history-file)))
|
|
(cond
|
|
((not (file-exists-p fname))
|
|
;; It's completely normal for this file not to exist, so don't complain.
|
|
;; (message "%s does not exist." fname)
|
|
)
|
|
((not (file-readable-p fname))
|
|
(message "%s is unreadable." fname))
|
|
(t
|
|
(condition-case nil
|
|
(load fname nil t)
|
|
(error (message "Could not load %s" fname))))))
|
|
|
|
(defun url-history-update-url (url time)
|
|
(setq url-history-changed-since-last-save t)
|
|
(puthash (if (vectorp url) (url-recreate-url url) url) time
|
|
url-history-hash-table))
|
|
|
|
(autoload 'url-make-private-file "url-util")
|
|
|
|
(defun url-history-save-history (&optional fname)
|
|
"Write the global history file into `url-history-file'.
|
|
The type of data written is determined by what is in the file to begin
|
|
with. If the type of storage cannot be determined, then prompt the
|
|
user for what type to save as."
|
|
(interactive)
|
|
(when url-history-changed-since-last-save
|
|
(or fname (setq fname (expand-file-name url-history-file)))
|
|
(if (condition-case nil
|
|
(progn
|
|
(url-make-private-file fname)
|
|
nil)
|
|
(error t))
|
|
(message "Error accessing history file `%s'" fname)
|
|
(let ((make-backup-files nil)
|
|
(version-control nil)
|
|
(require-final-newline t)
|
|
(count 0))
|
|
(with-temp-buffer
|
|
(maphash (lambda (key value)
|
|
(while (string-match "[\r\n]+" key)
|
|
(setq key (concat (substring key 0 (match-beginning 0))
|
|
(substring key (match-end 0) nil))))
|
|
(setq count (1+ count))
|
|
(insert "(puthash \"" key "\""
|
|
(if (not (stringp value)) " '" "")
|
|
(prin1-to-string value)
|
|
" url-history-hash-table)\n"))
|
|
url-history-hash-table)
|
|
;; We used to add this in the file, but it just makes the code
|
|
;; more complex with no benefit. Worse: it makes it harder to
|
|
;; preserve preexisting history when loading the history file.
|
|
;; (goto-char (point-min))
|
|
;; (insert (format
|
|
;; "(setq url-history-hash-table (make-hash-table :size %d :test 'equal))\n"
|
|
;; (/ count 4)))
|
|
;; (goto-char (point-max))
|
|
(insert "\n")
|
|
(write-file fname)))
|
|
(setq url-history-changed-since-last-save nil))))
|
|
|
|
(defun url-have-visited-url (url)
|
|
(url-do-setup)
|
|
(gethash url url-history-hash-table nil))
|
|
|
|
(defun url-completion-function (string predicate function)
|
|
;; Completion function to complete urls from the history.
|
|
;; This is obsolete since we can now pass the hash-table directly as a
|
|
;; completion table.
|
|
(url-do-setup)
|
|
(cond
|
|
((eq function nil)
|
|
(let ((list nil))
|
|
(maphash (lambda (key val) (push key list))
|
|
url-history-hash-table)
|
|
;; Not sure why we bother reversing the list. --Stef
|
|
(try-completion string (nreverse list) predicate)))
|
|
((eq function t)
|
|
(let ((stub (concat "\\`" (regexp-quote string)))
|
|
(retval nil))
|
|
(maphash
|
|
(lambda (url time)
|
|
(if (string-match stub url) (push url retval)))
|
|
url-history-hash-table)
|
|
retval))
|
|
((eq function 'lambda)
|
|
(and (gethash string url-history-hash-table) t))
|
|
(t
|
|
(error "url-completion-function very confused"))))
|
|
|
|
(provide 'url-history)
|
|
|
|
;;; url-history.el ends here
|