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1 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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2 ;;; Copyright (c) 1993, 1994, 1995 by William M. Perry (wmperry@spry.com)
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3 ;;;
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4 ;;; This file is not part of GNU Emacs, but the same permissions apply.
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5 ;;;
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6 ;;; GNU Emacs is free software; you can redistribute it and/or modify
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7 ;;; it under the terms of the GNU General Public License as published by
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8 ;;; the Free Software Foundation; either version 2, or (at your option)
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9 ;;; any later version.
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10 ;;;
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11 ;;; GNU Emacs is distributed in the hope that it will be useful,
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12 ;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 ;;; GNU General Public License for more details.
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15 ;;;
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16 ;;; You should have received a copy of the GNU General Public License
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17 ;;; along with GNU Emacs; see the file COPYING. If not, write to
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18 ;;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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19 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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20
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21 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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22 ;;; Structure for hotlists
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23 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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24 ;;; (
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25 ;;; ("name of item1" . "http://foo.bar.com/") ;; A single item in hotlist
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26 ;;; ("name of item2" . ( ;; A sublist
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27 ;;; ("name of item3" . "http://www.ack.com/")
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28 ;;; ))
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29 ;;; ) ; end of hotlist
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30 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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31 (require 'w3-vars)
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32
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33 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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34 ;;; Hotlist Handling Code
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35 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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36 (defvar w3-html-bookmarks nil)
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37
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38 (defun w3-read-html-bookmarks (fname)
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39 "Import an HTML file into the Emacs-w3 format."
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40 (interactive "fBookmark file: ")
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41 (if (not (file-readable-p fname))
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42 (error "Can not read %s..." fname))
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43 (save-excursion
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44 (set-buffer (get-buffer-create " *bookmark-work*"))
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45 (erase-buffer)
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46 (insert-file-contents fname)
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47 (let* ((w3-debug-html nil)
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48 (bkmarks nil)
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49 (parse (w3-parse-buffer (current-buffer) t)))
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50 (setq parse w3-last-parse-tree
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51 bkmarks (nreverse (w3-grok-html-bookmarks parse))
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52 w3-html-bookmarks bkmarks))))
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53
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54 (eval-when-compile
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55 (defvar cur-stack nil)
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56 (defvar cur-title nil)
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57 (defmacro push-new-menu ()
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58 '(setq cur-stack (cons (list "") cur-stack)))
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59
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60 (defmacro push-new-item (title href)
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61 (` (setcar cur-stack (cons (vector (, title) (list 'w3-fetch (, href)) t)
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62 (car cur-stack)))))
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63 ;;(` (setcar cur-stack (cons (cons (, title) (, href)) (car cur-stack)))))
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64
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65 (defmacro finish-submenu ()
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66 '(let ((x (nreverse (car cur-stack))))
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67 (and x (setcar x (car cur-title)))
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68 (setq cur-stack (cdr cur-stack)
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69 cur-title (cdr cur-title))
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70 (if cur-stack
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71 (setcar cur-stack (cons x (car cur-stack)))
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72 (setq cur-stack (list x)))))
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73 )
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74
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75 (defun w3-grok-html-bookmarks-internal (tree)
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76 (let (node tag content args)
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77 (while tree
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78 (setq node (car tree)
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79 tree (cdr tree)
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80 tag (and (listp node) (nth 0 node))
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81 args (and (listp node) (nth 1 node))
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82 content (and (listp node) (nth 2 node)))
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83 (cond
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84 ((eq tag 'title)
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85 (setq cur-title (list (w3-normalize-spaces (car content))))
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86 (w3-grok-html-bookmarks-internal content))
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87 ((eq tag 'dl)
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88 (push-new-menu)
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89 (w3-grok-html-bookmarks-internal content)
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90 (finish-submenu))
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91 ((and (eq tag 'dt)
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92 (stringp (car content)))
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93 (setq cur-title (cons (w3-normalize-spaces (car content))
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94 cur-title)))
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95 ((and (eq tag 'a)
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96 (stringp (car-safe content))
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97 (cdr-safe (assq 'href args)))
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98 (push-new-item (w3-normalize-spaces (car-safe content))
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99 (cdr-safe (assq 'href args))))
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100 (content
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101 (w3-grok-html-bookmarks-internal content))))))
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102
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103 (defun w3-grok-html-bookmarks (chunk)
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104 (let (
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105 cur-title
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106 cur-stack
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107 )
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108 (w3-grok-html-bookmarks-internal chunk)
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109 (reverse (car cur-stack))))
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110
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111 (defun w3-hotlist-apropos (regexp)
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112 "Show hotlist entries matching REGEXP."
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113 (interactive "sW3 Hotlist Apropos (regexp): ")
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114 (or w3-setup-done (w3-do-setup))
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115 (let ((save-buf (get-buffer "Hotlist")) ; avoid killing this
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116 (w3-hotlist
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117 (apply
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118 'nconc
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119 (mapcar
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120 (function
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121 (lambda (entry)
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122 (if (or (string-match regexp (car entry))
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123 (string-match regexp (car (cdr entry))))
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124 (list entry))))
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125 w3-hotlist))))
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126 (if (not w3-hotlist)
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127 (message "No w3-hotlist entries match \"%s\"" regexp)
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128 (and save-buf (save-excursion
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129 (set-buffer save-buf)
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130 (rename-buffer (concat "Hotlist during " regexp))))
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131 (unwind-protect
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132 (progn
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133 (w3-show-hotlist)
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134 (rename-buffer (concat "Hotlist \"" regexp "\""))
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135 (setq url-current-file (concat "hotlist/" regexp)))
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136 (and save-buf (save-excursion
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137 (set-buffer save-buf)
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138 (rename-buffer "Hotlist")))))))
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139
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140 (defun w3-hotlist-refresh ()
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141 "Reload the default hotlist file into memory"
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142 (interactive)
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143 (w3-parse-hotlist)
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144 (if (fboundp 'w3-add-hotlist-menu) (w3-add-hotlist-menu)))
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145
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146 (defun w3-delete-from-alist (x alist)
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147 ;; Remove X from ALIST, return new alist
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148 (if (eq (assoc x alist) (car alist)) (cdr alist)
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149 (delq (assoc x alist) alist)))
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150
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151 (defun w3-hotlist-delete ()
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152 "Deletes a document from your hotlist file"
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153 (interactive)
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154 (save-excursion
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155 (if (not w3-hotlist) (message "No hotlist in memory!")
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156 (if (not (file-exists-p w3-hotlist-file))
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157 (message "Hotlist file %s does not exist." w3-hotlist-file)
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158 (let* ((completion-ignore-case t)
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159 (title (car (assoc (completing-read "Delete Document: "
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160 w3-hotlist nil t)
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161 w3-hotlist)))
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162 (case-fold-search nil)
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163 (buffer (get-buffer-create " *HOTW3*")))
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164 (and (string= title "") (error "No document specified."))
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165 (set-buffer buffer)
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166 (erase-buffer)
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167 (insert-file-contents w3-hotlist-file)
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168 (goto-char (point-min))
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169 (if (re-search-forward (concat "^" (regexp-quote title) "\r*$")
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170 nil t)
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171 (let ((make-backup-files nil)
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172 (version-control nil)
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173 (require-final-newline t))
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174 (previous-line 1)
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175 (beginning-of-line)
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176 (delete-region (point) (progn (forward-line 2) (point)))
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177 (write-file w3-hotlist-file)
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178 (setq w3-hotlist (w3-delete-from-alist title w3-hotlist))
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179 (kill-buffer (current-buffer)))
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180 (message "%s was not found in %s" title w3-hotlist-file))))))
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181 (and (fboundp 'w3-add-hotlist-menu) (funcall 'w3-add-hotlist-menu)))
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182
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183 (defun w3-hotlist-rename-entry (title)
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184 "Rename a hotlist item"
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185 (interactive (list (let ((completion-ignore-case t))
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186 (completing-read "Rename entry: " w3-hotlist nil t))))
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187 (cond ; Do the error handling first
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188 ((string= title "") (error "No document specified!"))
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189 ((not w3-hotlist) (error "No hotlist in memory!"))
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190 ((not (file-exists-p (expand-file-name w3-hotlist-file)))
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191 (error "Hotlist file %s does not exist." w3-hotlist-file))
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192 ((not (file-readable-p (expand-file-name w3-hotlist-file)))
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193 (error "Hotlist file %s exists, but is unreadable." w3-hotlist-file)))
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194 (save-excursion
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195 (let ((obj (assoc title w3-hotlist))
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196 (used (mapcar 'car w3-hotlist))
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197 (buff (get-buffer-create " *HOTW3*"))
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198 (new nil)
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199 )
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200 (while (or (null new) (member new used))
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201 (setq new (read-string "New name: ")))
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202 (set-buffer buff)
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203 (erase-buffer)
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204 (insert-file-contents (expand-file-name w3-hotlist-file))
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205 (goto-char (point-min))
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206 (if (re-search-forward (regexp-quote title) nil t)
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207 (let ((make-backup-files nil)
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208 (version-control nil)
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209 (require-final-newline t))
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210 (previous-line 1)
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211 (beginning-of-line)
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212 (delete-region (point) (progn (forward-line 2) (point)))
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213 (insert (format "%s %s\n%s\n" (nth 1 obj) (current-time-string)
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214 new))
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215 (setq w3-hotlist (cons (list new (nth 1 obj))
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216 (w3-delete-from-alist title w3-hotlist)))
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217 (write-file w3-hotlist-file)
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218 (kill-buffer (current-buffer))
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219 (if (and w3-running-FSF19 (not (eq 'tty (device-type))))
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220 (progn
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221 (delete-menu-item '("Go"))
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222 (w3-build-FSF19-menu))))
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223 (message "%s was not found in %s" title w3-hotlist-file))))
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224 (and (fboundp 'w3-add-hotlist-menu) (funcall 'w3-add-hotlist-menu)))
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225
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226 (defun w3-hotlist-append (fname)
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227 "Append a hotlist to the one in memory"
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228 (interactive "fAppend hotlist file: ")
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229 (let ((x w3-hotlist))
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230 (w3-parse-hotlist fname)
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231 (setq w3-hotlist (nconc x w3-hotlist))
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232 (and (fboundp 'w3-add-hotlist-menu) (funcall 'w3-add-hotlist-menu))))
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233
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234 (defun w3-parse-hotlist (&optional fname)
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235 "Read in the hotlist specified by FNAME"
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236 (if (not fname) (setq fname w3-hotlist-file))
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237 (setq w3-hotlist nil)
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238 (if (not (file-exists-p fname))
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239 (message "%s does not exist!" fname)
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240 (let* ((old-buffer (current-buffer))
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241 (buffer (get-buffer-create " *HOTW3*"))
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242 cur-link
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243 cur-alias)
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244 (set-buffer buffer)
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245 (erase-buffer)
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246 (insert-file-contents fname)
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247 (goto-char (point-min))
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248 (while (re-search-forward "^\n" nil t) (replace-match ""))
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249 (goto-line 3)
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250 (while (not (eobp))
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251 (re-search-forward "^[^ ]*" nil t)
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252 (setq cur-link (buffer-substring (match-beginning 0) (match-end 0)))
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253 (setq cur-alias (buffer-substring (progn
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254 (forward-line 1)
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255 (beginning-of-line)
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256 (point))
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257 (progn
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258 (end-of-line)
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259 (point))))
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260 (if (not (equal cur-alias ""))
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261 (setq w3-hotlist (cons (list cur-alias cur-link) w3-hotlist))))
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262 (kill-buffer buffer)
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263 (and (fboundp 'w3-add-hotlist-menu) (funcall 'w3-add-hotlist-menu))
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264 (set-buffer old-buffer))))
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265
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266 ;;;###autoload
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267 (defun w3-use-hotlist ()
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268 "Possibly go to a link in your W3/Mosaic hotlist.
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269 This is part of the emacs World Wide Web browser. It will prompt for
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270 one of the items in your 'hotlist'. A hotlist is a list of often
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271 visited or interesting items you have found on the World Wide Web."
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272 (interactive)
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273 (if (not w3-setup-done) (w3-do-setup))
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274 (if (not w3-hotlist) (message "No hotlist in memory!")
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275 (let* ((completion-ignore-case t)
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276 (url (car (cdr (assoc
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277 (completing-read "Goto Document: " w3-hotlist nil t)
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278 w3-hotlist)))))
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279 (if (string= "" url) (error "No document specified!"))
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280 (w3-fetch url))))
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281
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282 (defun w3-hotlist-add-document-at-point (pref-arg)
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283 "Add the document pointed to by the hyperlink under point to the hotlist."
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284 (interactive "P")
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285 (let ((url (w3-view-this-url t)) title)
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286 (or url (error "No link under point."))
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287 (setq title (get-text-property (point) 'title))
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288 (if (and title
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289 (marker-buffer (car title))
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290 (marker-buffer (cdr title)))
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291 (setq title (buffer-substring (car title) (cdr title)))
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292 (setq title "None"))
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293 (remove-text-properties 1 (length title))
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294 (w3-hotlist-add-document pref-arg title url)
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295 (and (fboundp 'w3-add-hotlist-menu) (funcall 'w3-add-hotlist-menu))))
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296
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297 (defun w3-hotlist-add-document (pref-arg &optional the-title the-url)
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298 "Add this documents url to the hotlist"
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299 (interactive "P")
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300 (save-excursion
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301 (let* ((buffer (get-buffer-create " *HOTW3*"))
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302 (title (or the-title
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303 (and pref-arg (read-string "Title: "))
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304 (buffer-name)))
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305 (make-backup-files nil)
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306 (version-control nil)
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307 (require-final-newline t)
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308 (url (or the-url (url-view-url t))))
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309 (if (rassoc (list url) w3-hotlist)
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310 (error "That item already in hotlist, use w3-hotlist-rename-entry."))
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311 (set-buffer buffer)
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312 (erase-buffer)
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313 (setq w3-hotlist (cons (list title url) w3-hotlist)
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314 url (url-unhex-string url))
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315 (if (not (file-exists-p w3-hotlist-file))
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316 (progn
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317 (message "Creating hotlist file %s" w3-hotlist-file)
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318 (insert "ncsa-xmosaic-hotlist-format-1\nDefault\n\n")
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319 (backward-char 1))
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320 (progn
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321 (insert-file-contents w3-hotlist-file)
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322 (goto-char (point-max))
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323 (backward-char 1)))
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324 (insert "\n" (url-hexify-string url) " " (current-time-string)
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325 "\n" title)
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326 (write-file w3-hotlist-file)
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327 (kill-buffer (current-buffer))))
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328 (and (fboundp 'w3-add-hotlist-menu) (funcall 'w3-add-hotlist-menu)))
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329
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330 (provide 'w3-hot)
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