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1 ;;; w3-hot.el --- Main functions for emacs-w3 on all platforms/versions
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2 ;; Author: wmperry
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102
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3 ;; Created: 1997/02/18 23:36:48
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4 ;; Version: 1.12
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5 ;; Keywords: faces, help, comm, news, mail, processes, mouse, hypermedia
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6
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7 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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8 ;;; Copyright (c) 1993 - 1996 by William M. Perry (wmperry@cs.indiana.edu)
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9 ;;; Copyright (c) 1996, 1997 Free Software Foundation, Inc.
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10 ;;;
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11 ;;; This file is part of GNU Emacs.
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12 ;;;
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13 ;;; GNU Emacs is free software; you can redistribute it and/or modify
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14 ;;; it under the terms of the GNU General Public License as published by
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15 ;;; the Free Software Foundation; either version 2, or (at your option)
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16 ;;; any later version.
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17 ;;;
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18 ;;; GNU Emacs is distributed in the hope that it will be useful,
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19 ;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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20 ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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21 ;;; GNU General Public License for more details.
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22 ;;;
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23 ;;; You should have received a copy of the GNU General Public License
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24 ;;; along with GNU Emacs; see the file COPYING. If not, write to the
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25 ;;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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26 ;;; Boston, MA 02111-1307, USA.
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27 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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28
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29 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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30 ;;; Structure for hotlists
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31 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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32 ;;; (
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33 ;;; ("name of item1" . "http://foo.bar.com/") ;; A single item in hotlist
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34 ;;; ("name of item2" . ( ;; A sublist
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35 ;;; ("name of item3" . "http://www.ack.com/")
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36 ;;; ))
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37 ;;; ) ; end of hotlist
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38 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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39 (require 'w3-vars)
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40
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41 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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42 ;;; Hotlist Handling Code
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43 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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44 (defvar w3-html-bookmarks nil)
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45
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46 (defun w3-hotlist-break-shit ()
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47 (let ((todo '(w3-hotlist-apropos
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48 w3-hotlist-delete
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49 w3-hotlist-rename-entry
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50 w3-hotlist-append
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51 w3-use-hotlist
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52 w3-hotlist-add-document
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53 w3-hotlist-add-document-at-point
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54 ))
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55 (cur nil))
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56 (while todo
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57 (setq cur (car todo)
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58 todo (cdr todo))
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59 (fset cur
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60 (`
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61 (lambda (&rest ignore)
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62 (error "Sorry, `%s' does not work with html bookmarks"
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63 (quote (, cur)))))))))
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64
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65 (defun w3-read-html-bookmarks (fname)
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66 "Import an HTML file into the Emacs-w3 format."
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67 (interactive "fBookmark file: ")
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68 (if (not (file-readable-p fname))
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69 (error "Can not read %s..." fname))
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70 (save-excursion
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71 (set-buffer (get-buffer-create " *bookmark-work*"))
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72 (erase-buffer)
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73 (insert-file-contents fname)
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74 (let* ((w3-debug-html nil)
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75 (bkmarks nil)
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76 (parse (w3-parse-buffer (current-buffer))))
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77 (setq parse w3-last-parse-tree
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78 bkmarks (nreverse (w3-grok-html-bookmarks parse))
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79 w3-html-bookmarks bkmarks)))
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80 (w3-hotlist-break-shit))
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81
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82 (eval-when-compile
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83 (defvar cur-stack nil)
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84 (defvar cur-title nil)
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85 (defmacro push-new-menu ()
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86 '(setq cur-stack (cons (list "") cur-stack)))
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87
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88 (defmacro push-new-item (title href)
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89 (` (setcar cur-stack (cons (vector (, title) (list 'w3-fetch (, href)) t)
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90 (car cur-stack)))))
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91 ;;(` (setcar cur-stack (cons (cons (, title) (, href)) (car cur-stack)))))
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92
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93 (defmacro finish-submenu ()
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94 '(let ((x (nreverse (car cur-stack))))
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95 (and x (setcar x (car cur-title)))
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96 (setq cur-stack (cdr cur-stack)
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97 cur-title (cdr cur-title))
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98 (if cur-stack
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99 (setcar cur-stack (cons x (car cur-stack)))
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100 (setq cur-stack (list x)))))
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101 )
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102
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103 (defun w3-grok-html-bookmarks-internal (tree)
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104 (let (node tag content args)
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105 (while tree
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106 (setq node (car tree)
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107 tree (cdr tree)
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108 tag (and (listp node) (nth 0 node))
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109 args (and (listp node) (nth 1 node))
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110 content (and (listp node) (nth 2 node)))
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111 (cond
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112 ((eq tag 'title)
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113 (setq cur-title (list (w3-normalize-spaces (car content))))
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114 (w3-grok-html-bookmarks-internal content))
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115 ((memq tag '(dl ol ul))
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116 (push-new-menu)
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117 (w3-grok-html-bookmarks-internal content)
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118 (finish-submenu))
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119 ((and (memq tag '(dt li))
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120 (stringp (car content)))
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121 (setq cur-title (cons (w3-normalize-spaces (car content))
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122 cur-title)))
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123 ((and (eq tag 'a)
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124 (stringp (car-safe content))
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125 (cdr-safe (assq 'href args)))
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126 (push-new-item (w3-normalize-spaces (car-safe content))
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127 (cdr-safe (assq 'href args))))
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128 (content
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129 (w3-grok-html-bookmarks-internal content))))))
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130
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131 (defun w3-grok-html-bookmarks (chunk)
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132 (let (
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133 cur-title
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134 cur-stack
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135 )
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136 (w3-grok-html-bookmarks-internal chunk)
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137 (reverse (car cur-stack))))
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138
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139 (defun w3-hotlist-apropos (regexp)
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140 "Show hotlist entries matching REGEXP."
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141 (interactive "sW3 Hotlist Apropos (regexp): ")
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142 (or w3-setup-done (w3-do-setup))
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143 (let ((save-buf (get-buffer "Hotlist")) ; avoid killing this
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144 (w3-hotlist
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145 (apply
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146 'nconc
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147 (mapcar
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148 (function
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149 (lambda (entry)
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150 (if (or (string-match regexp (car entry))
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151 (string-match regexp (car (cdr entry))))
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152 (list entry))))
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153 w3-hotlist))))
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154 (if (not w3-hotlist)
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155 (message "No w3-hotlist entries match \"%s\"" regexp)
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156 (and save-buf (save-excursion
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157 (set-buffer save-buf)
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158 (rename-buffer (concat "Hotlist during " regexp))))
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159 (unwind-protect
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160 (progn
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161 (w3-show-hotlist)
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162 (rename-buffer (concat "Hotlist \"" regexp "\""))
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163 (url-set-filename url-current-object (concat "hotlist/" regexp)))
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164 (and save-buf (save-excursion
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165 (set-buffer save-buf)
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166 (rename-buffer "Hotlist")))))))
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167
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168 (defun w3-hotlist-refresh ()
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169 "Reload the default hotlist file into memory"
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170 (interactive)
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171 (w3-parse-hotlist))
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172
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173 (defun w3-delete-from-alist (x alist)
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174 ;; Remove X from ALIST, return new alist
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175 (if (eq (assoc x alist) (car alist)) (cdr alist)
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176 (delq (assoc x alist) alist)))
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177
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178 (defun w3-hotlist-delete ()
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179 "Deletes a document from your hotlist file"
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180 (interactive)
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181 (save-excursion
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182 (if (not w3-hotlist) (message "No hotlist in memory!")
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183 (if (not (file-exists-p w3-hotlist-file))
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184 (message "Hotlist file %s does not exist." w3-hotlist-file)
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185 (let* ((completion-ignore-case t)
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186 (title (car (assoc (completing-read "Delete Document: "
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187 w3-hotlist nil t)
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188 w3-hotlist)))
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189 (case-fold-search nil)
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190 (buffer (get-buffer-create " *HOTW3*")))
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191 (and (string= title "") (error "No document specified."))
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192 (set-buffer buffer)
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193 (erase-buffer)
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194 (insert-file-contents w3-hotlist-file)
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195 (goto-char (point-min))
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196 (if (re-search-forward (concat "^" (regexp-quote title) "\r*$")
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197 nil t)
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198 (let ((make-backup-files nil)
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199 (version-control nil)
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200 (require-final-newline t))
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201 (previous-line 1)
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202 (beginning-of-line)
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203 (delete-region (point) (progn (forward-line 2) (point)))
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204 (write-file w3-hotlist-file)
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205 (setq w3-hotlist (w3-delete-from-alist title w3-hotlist))
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206 (kill-buffer (current-buffer)))
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207 (message "%s was not found in %s" title w3-hotlist-file)))))))
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208
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209 (defun w3-hotlist-rename-entry (title)
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210 "Rename a hotlist item"
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211 (interactive (list (let ((completion-ignore-case t))
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212 (completing-read "Rename entry: " w3-hotlist nil t))))
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213 (cond ; Do the error handling first
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214 ((string= title "") (error "No document specified!"))
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215 ((not w3-hotlist) (error "No hotlist in memory!"))
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216 ((not (file-exists-p (expand-file-name w3-hotlist-file)))
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217 (error "Hotlist file %s does not exist." w3-hotlist-file))
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218 ((not (file-readable-p (expand-file-name w3-hotlist-file)))
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219 (error "Hotlist file %s exists, but is unreadable." w3-hotlist-file)))
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220 (save-excursion
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221 (let ((obj (assoc title w3-hotlist))
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222 (used (mapcar 'car w3-hotlist))
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223 (buff (get-buffer-create " *HOTW3*"))
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224 (new nil)
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225 )
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226 (while (or (null new) (member new used))
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227 (setq new (read-string "New name: ")))
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228 (set-buffer buff)
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229 (erase-buffer)
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230 (insert-file-contents (expand-file-name w3-hotlist-file))
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231 (goto-char (point-min))
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232 (if (re-search-forward (regexp-quote title) nil t)
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233 (let ((make-backup-files nil)
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234 (version-control nil)
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235 (require-final-newline t))
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236 (previous-line 1)
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237 (beginning-of-line)
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238 (delete-region (point) (progn (forward-line 2) (point)))
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239 (insert (format "%s %s\n%s\n" (nth 1 obj) (current-time-string)
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240 new))
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241 (setq w3-hotlist (cons (list new (nth 1 obj))
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242 (w3-delete-from-alist title w3-hotlist)))
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243 (write-file w3-hotlist-file)
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244 (kill-buffer (current-buffer))
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245 (if (and w3-running-FSF19 (not (eq 'tty (device-type))))
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246 (progn
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247 (delete-menu-item '("Go"))
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248 (w3-build-FSF19-menu))))
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249 (message "%s was not found in %s" title w3-hotlist-file)))))
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250
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251 (defun w3-hotlist-append (fname)
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252 "Append a hotlist to the one in memory"
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253 (interactive "fAppend hotlist file: ")
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254 (let ((x w3-hotlist))
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255 (w3-parse-hotlist fname)
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256 (setq w3-hotlist (nconc x w3-hotlist))))
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257
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2
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258 (defun w3-hotlist-parse-old-mosaic-format ()
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259 (let (cur-link cur-alias)
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260 (while (re-search-forward "^\n" nil t) (replace-match ""))
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261 (goto-line 3)
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262 (while (not (eobp))
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263 (re-search-forward "^[^ ]*" nil t)
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264 (setq cur-link (buffer-substring (match-beginning 0) (match-end 0)))
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265 (setq cur-alias (buffer-substring (progn
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266 (forward-line 1)
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267 (beginning-of-line)
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268 (point))
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269 (progn
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270 (end-of-line)
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271 (point))))
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272 (if (not (equal cur-alias ""))
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273 (setq w3-hotlist (cons (list cur-alias cur-link) w3-hotlist))))))
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2
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274
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275 (defun w3-parse-hotlist (&optional fname)
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276 "Read in the hotlist specified by FNAME"
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277 (if (not fname) (setq fname w3-hotlist-file))
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278 (setq w3-hotlist nil)
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279 (if (not (file-exists-p fname))
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280 (message "%s does not exist!" fname)
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281 (let* ((old-buffer (current-buffer))
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282 (buffer (get-buffer-create " *HOTW3*"))
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283 (case-fold-search t))
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284 (set-buffer buffer)
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285 (erase-buffer)
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286 (insert-file-contents fname)
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287 (goto-char (point-min))
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2
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288 (cond
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289 ((looking-at "ncsa-xmosaic-hotlist-format-1");; Old-style NCSA Mosaic
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290 (w3-hotlist-parse-old-mosaic-format))
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291 ((or (looking-at "<!DOCTYPE") ; Some HTML style, including netscape
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292 (re-search-forward "<a[ \n]+href" nil t))
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293 (w3-read-html-bookmarks fname))
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294 (t
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295 (message "Cannot determine format of hotlist file: %s" fname)))
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296 (set-buffer-modified-p nil)
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297 (kill-buffer buffer)
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298 (set-buffer old-buffer))))
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299
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300 ;;;###autoload
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301 (defun w3-use-hotlist ()
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302 "Possibly go to a link in your W3/Mosaic hotlist.
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303 This is part of the emacs World Wide Web browser. It will prompt for
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304 one of the items in your 'hotlist'. A hotlist is a list of often
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305 visited or interesting items you have found on the World Wide Web."
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306 (interactive)
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307 (if (not w3-setup-done) (w3-do-setup))
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308 (if (not w3-hotlist) (message "No hotlist in memory!")
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309 (let* ((completion-ignore-case t)
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310 (url (car (cdr (assoc
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311 (completing-read "Goto Document: " w3-hotlist nil t)
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312 w3-hotlist)))))
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313 (if (string= "" url) (error "No document specified!"))
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314 (w3-fetch url))))
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315
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316 (defun w3-hotlist-add-document-at-point (pref-arg)
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317 "Add the document pointed to by the hyperlink under point to the hotlist."
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318 (interactive "P")
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70
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319 (let ((url (w3-view-this-url t)) title)
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320 (or url (error "No link under point."))
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70
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321 (setq title (get-text-property (point) 'title))
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322 (if (and title
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323 (marker-buffer (car title))
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324 (marker-buffer (cdr title)))
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325 (setq title (buffer-substring-no-properties (car title) (cdr title)))
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326 (setq title "None"))
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80
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327 (w3-hotlist-add-document pref-arg title url)))
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0
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328
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329 (defun w3-hotlist-add-document (pref-arg &optional the-title the-url)
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330 "Add this documents url to the hotlist"
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331 (interactive "P")
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332 (save-excursion
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333 (let* ((buffer (get-buffer-create " *HOTW3*"))
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334 (title (or the-title
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335 (and pref-arg (read-string "Title: "))
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336 (buffer-name)))
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337 (make-backup-files nil)
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338 (version-control nil)
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339 (require-final-newline t)
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340 (url (or the-url (url-view-url t))))
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341 (if (rassoc (list url) w3-hotlist)
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342 (error "That item already in hotlist, use w3-hotlist-rename-entry."))
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343 (set-buffer buffer)
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344 (erase-buffer)
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345 (setq w3-hotlist (cons (list title url) w3-hotlist)
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346 url (url-unhex-string url))
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347 (if (not (file-exists-p w3-hotlist-file))
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348 (progn
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349 (message "Creating hotlist file %s" w3-hotlist-file)
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350 (insert "ncsa-xmosaic-hotlist-format-1\nDefault\n\n")
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351 (backward-char 1))
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352 (progn
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353 (insert-file-contents w3-hotlist-file)
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354 (goto-char (point-max))
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355 (backward-char 1)))
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80
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356 (insert "\n" url " " (current-time-string) "\n" title)
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0
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357 (write-file w3-hotlist-file)
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80
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358 (kill-buffer (current-buffer)))))
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0
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359
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360 (provide 'w3-hot)
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