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1 ;;; webjump.el --- programmable Web hotlist
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2
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3 ;; Copyright (C) 1996 Free Software Foundation
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4
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5 ;; Author: Neil W. Van Dyke <nwv@acm.org>
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6 ;; Created: Fri 09 Aug 1996
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7 ;; Version: 1.4
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8 ;; Keywords: webjump web www browse-url
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9 ;; X-URL: http://www.cs.brown.edu/people/nwv/
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10
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11 ;; This file is not yet part of GNU Emacs.
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12
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13 ;; This is free software; you can redistribute it and/or modify it under the
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14 ;; terms of the GNU General Public License as published by the Free Software
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15 ;; Foundation; either version 2, or (at your option) any later version.
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16
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17 ;; This is distributed in the hope that it will be useful, but WITHOUT ANY
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18 ;; WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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19 ;; FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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20 ;; details.
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21
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22 ;; You should have received a copy of the GNU General Public License along with
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23 ;; GNU Emacs; see the file COPYING. If not, write to the Free Software
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24 ;; Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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25
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26 ;;; Change Log:
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27
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28 ;; [Version 1.4, Tue 17 Sep 1995, nwv] Removed the evil "defconst-TEST" that
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29 ;; slipped into 1.3. Organized webjump-sample-sites and modified the content a
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30 ;; bit.
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31
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32 ;; [Version 1.3, Fri 30 Aug 1996, nwv] Fixed broken `if' function in
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33 ;; `webjump-to-javaapi' (bugfix already posted). Added `webjump-to-iwin'.
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34 ;; Added comment on purpose of `webjump-sample-sites'. Added
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35 ;; `webjump-read-choice'.
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36
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37 ;; [Version 1.2, Fri 16 Aug 1996, nwv] Oops, got Gamelan mixed up with Digital
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38 ;; Espresso somehow. Added `mirrors' builtin and used it for the sample GNU
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39 ;; Archive site. Added some other sample sites. Split sample sites out into
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40 ;; separate constant. Misc. small changes. Copyright has been transferred to
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41 ;; the FSF.
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42
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43 ;; [Version 1.1, Sat 10 Aug 1996, nwv] Added missing call to `webjump-url-fix'
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44 ;; (thanks to Istvan Marko <mi@bgytf.hu> for pointing this out). Added
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45 ;; ``builtins'' concept in order to support `simple-query' builtin for covering
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46 ;; the majority of cases. Added a couple more sample sites.
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47
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48 ;; [Version 1.0, Fri 09 Aug 1996, nwv] Wrote initial version and posted to
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49 ;; gnu.emacs.sources.
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50
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51 ;;; Commentary:
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52
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53 ;; WebJump provides a sort of ``programmable hotlist'' of Web sites that can
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54 ;; quickly be invoked in your Web browser. Each Web site in the hotlist has a
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55 ;; name, and you select the desired site name via a completing string prompt in
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56 ;; the minibuffer. The URL for each Web site is defined as a static string or
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57 ;; a built-in or custom function, allowing interactive prompting for
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58 ;; site-specific queries and options.
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59
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60 ;; Note that WebJump was originally intended to complement your conventional
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61 ;; browser-based hotlist, not replace it. (Though there's no reason you
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62 ;; couldn't use WebJump for your entire hotlist if you were so inclined.)
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63
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64 ;; The `webjump-sites' variable, which defines the hotlist, defaults to some
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65 ;; example sites. You'll probably want to override it with your own favorite
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66 ;; sites. The documentation for the variable describes the syntax.
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67
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68 ;; You may wish to add something like the following to your `.emacs' file:
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69 ;;
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70 ;; (load "webjump")
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71 ;; (global-set-key "\C-c\C-j" 'webjump)
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72 ;; (setq webjump-sites
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73 ;; (append '(
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74 ;; ("My Home Page" . "www.someisp.net/users/joebobjr/")
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75 ;; ("Pop's Site" . "www.joebob-and-son.com/")
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76 ;; )
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77 ;; webjump-sample-sites))
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78 ;;
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79 ;; The above loads this package, binds `C-c C-j' to invoke WebJump, and adds
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80 ;; your personal favorite sites to the hotlist.
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81
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82 ;; The `webjump-sample-sites' constant mostly contains sites that are expected
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83 ;; to be generally useful to Emacs users or that have some sort of query which
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84 ;; can be coded in WebJump. There are two main goals of this sample site list:
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85 ;; (1) demonstrate WebJump capabilities and usage; (2) provide definitions for
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86 ;; many popular sites so that people don't have to reinvent the wheel. A few
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87 ;; assorted other sites have been thrown in on a whim. No commercial sites are
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88 ;; included unless they provide a free, generally-useful service. Inclusion of
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89 ;; a site does not represent an endorsement. Please contact the maintainer
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90 ;; with change requests.
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91
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92 ;; The `browse-url' package is used to submit URLs to the browser, so any
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93 ;; browser-specific configuration should be done there.
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94
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95 ;; WebJump inherits a small amount code from my `altavista.el' package, and is
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96 ;; intended to obsolete that package.
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97
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98 ;;; Code:
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99
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100 ;;-------------------------------------------------------- Package Dependencies
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101
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102 (require 'browse-url)
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103
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104 ;;------------------------------------------------------ Package Identification
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105
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106 (defconst webjump-version "1.4")
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107 (defconst webjump-author "Neil W. Van Dyke <nwv@acm.org>")
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108 (defconst webjump-maintainer-address "nwv@acm.org")
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109 (defconst webjump-vc-id
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110 "$Id: webjump.el,v 1.1 1997/02/14 19:21:45 steve Exp $")
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111
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112 ;;------------------------------------------------------------------- Constants
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113
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114 (defconst webjump-sample-sites
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115 '(
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116
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117 ;; FSF, not including Emacs-specific.
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118 ("GNU Project FTP Archive".
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119 [mirrors "ftp://prep.ai.mit.edu/pub/gnu/"
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120 ;; ASIA:
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121 "ftp://ftp.cs.titech.ac.jp"
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122 "ftp://tron.um.u-tokyo.ac.jp/pub/GNU/prep"
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123 "ftp://cair-archive.kaist.ac.kr/pub/gnu"
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124 "ftp://ftp.nectec.or.th/pub/mirrors/gnu"
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125 ;; AUSTRALIA:
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126 "ftp://archie.au/gnu"
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127 "ftp://archie.oz/gnu"
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128 "ftp://archie.oz.au/gnu"
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129 ;; AFRICA:
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130 "ftp://ftp.sun.ac.za/pub/gnu"
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131 ;; MIDDLE-EAST:
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132 "ftp://ftp.technion.ac.il/pub/unsupported/gnu"
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133 ;; EUROPE:
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134 "ftp://irisa.irisa.fr/pub/gnu"
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135 "ftp://ftp.univ-lyon1.fr/pub/gnu"
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136 "ftp://ftp.mcc.ac.uk"
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137 "ftp://unix.hensa.ac.uk/mirrors/uunet/systems/gnu"
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138 "ftp://src.doc.ic.ac.uk/gnu"
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139 "ftp://ftp.ieunet.ie/pub/gnu"
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140 "ftp://ftp.eunet.ch"
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141 "ftp://nic.switch.ch/mirror/gnu"
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142 "ftp://ftp.informatik.rwth-aachen.de/pub/gnu"
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143 "ftp://ftp.informatik.tu-muenchen.de"
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144 "ftp://ftp.win.tue.nl/pub/gnu"
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145 "ftp://ftp.nl.net"
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146 "ftp://ftp.etsimo.uniovi.es/pub/gnu"
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147 "ftp://ftp.funet.fi/pub/gnu"
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148 "ftp://ftp.denet.dk"
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149 "ftp://ftp.stacken.kth.se"
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150 "ftp://isy.liu.se"
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151 "ftp://ftp.luth.se/pub/unix/gnu"
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152 "ftp://ftp.sunet.se/pub/gnu"
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153 "ftp://archive.eu.net"
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154 ;; SOUTH AMERICA:
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155 "ftp://ftp.inf.utfsm.cl/pub/gnu"
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156 "ftp://ftp.unicamp.br/pub/gnu"
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157 ;; WESTERN CANADA:
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158 "ftp://ftp.cs.ubc.ca/mirror2/gnu"
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159 ;; USA:
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160 "ftp://wuarchive.wustl.edu/systems/gnu"
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161 "ftp://labrea.stanford.edu"
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162 "ftp://ftp.digex.net/pub/gnu"
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163 "ftp://ftp.kpc.com/pub/mirror/gnu"
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164 "ftp://f.ms.uky.edu/pub3/gnu"
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165 "ftp://jaguar.utah.edu/gnustuff"
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166 "ftp://ftp.hawaii.edu/mirrors/gnu"
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167 "ftp://uiarchive.cso.uiuc.edu/pub/gnu"
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168 "ftp://ftp.cs.columbia.edu/archives/gnu/prep"
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169 "ftp://gatekeeper.dec.com/pub/GNU"
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170 "ftp://ftp.uu.net/systems/gnu"])
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171 ("GNU Project Home Page" . "www.fsf.org")
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172 ;"www.gnu.ai.mit.edu"
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173 ;"agnes.dida.physik.uni-essen.de/~gnu"
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174
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175 ;; Emacs.
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176 ("Eieio" . "ftp.ultranet.com/pub/zappo/")
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177 ("Emacs Lisp Archive" .
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178 "ftp://archive.cis.ohio-state.edu/pub/gnu/emacs/elisp-archive/")
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179 ("Insidious Big Brother Database" . "home.netscape.com/people/jwz/bbdb/")
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180 ;"ftp.xemacs.org/pub/bbdb/"
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181 ("Mailcrypt" . "cag-www.lcs.mit.edu/mailcrypt/")
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182 ("XEmacs Home" . "www.xemacs.org") ; Doesn't hurt to have this here. :)
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183 ("Yahoo: Emacs" .
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184 "www.yahoo.com/Computers_and_Internet/Software/Editors/Emacs/")
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185
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186 ;; General interest.
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187 ("AltaVista" .
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188 [simple-query
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189 "www.altavista.digital.com"
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190 "www.altavista.digital.com/cgi-bin/query?pg=aq&what=web&fmt=.&q="
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191 "&r=&d0=&d1="])
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192 ("Archie" .
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193 [simple-query "http://hoohoo.ncsa.uiuc.edu/cgi-bin/AA.pl"
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194 "http://hoohoo.ncsa.uiuc.edu/cgi-bin/AA.pl?query=" ""])
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195 ("Interactive Weather Information Network" . webjump-to-iwin)
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196 ("Lycos" .
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197 [simple-query "www.lycos.com" "www.lycos.com/cgi-bin/pursuit?query=" ""])
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198 ("Usenet FAQs" .
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199 [simple-query "www.cis.ohio-state.edu/hypertext/faq/usenet/FAQ-List.html"
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200 "www.cis.ohio-state.edu/htbin/search-usenet-faqs/form?find="
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201 ""])
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202 ("RTFM Usenet FAQs by Group" .
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203 "ftp://rtfm.mit.edu/pub/usenet-by-group/")
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204 ("RTFM Usenet FAQs by Hierachy" .
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205 "ftp://rtfm.mit.edu/pub/usenet-by-hierarchy/")
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206 ("Webster" .
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207 [simple-query "c.gp.cs.cmu.edu:5103/prog/webster"
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208 "gs213.sp.cs.cmu.edu/prog/webster?" ""])
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209 ("X Consortium Archive". "ftp.x.org")
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210 ("Yahoo" .
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211 [simple-query "www.yahoo.com" "search.yahoo.com/bin/search?p=" ""])
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212 ("Yahoo: Reference" "www.yahoo.com/Reference/")
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213
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214 ;; Computer privacy and social issues.
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215 ("Computer Professionals for Social Responsibility" . "www.cpsr.org/dox/")
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216 ("Electronic Frontier Foundation" . "www.eff.org")
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217 ("Pretty Good Privacy" . "web.mit.edu/network/pgp.html")
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218 ("Risks Digest" . webjump-to-risks)
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219
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220 ;; Java.
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221 ("Digital Espresso" .
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222 [simple-query "www.io.org/~mentor/DigitalEspresso.html"
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223 "www.jars.com/cgi-bin/aglimpse/01?query="
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224 "&case=on&whole=on&errors=0&maxfiles=100&maxlines=30"])
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225 ("Java API" . webjump-to-javaapi)
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226
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227 ;; Fun.
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228 ("Bastard Operator from Hell" . "www.replay.com/bofh/")
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229 ("Dilbert" . "www.unitedmedia.com/comics/dilbert/")
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230 ("Playboy" . (if (webjump-adult-p) "www.playboy.com" "www.whitehouse.gov"))
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231
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232 ;; Author's indulgence.
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233 ("Brown University" .
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234 [simple-query "www.brown.edu" "www.brown.edu/cgi-local/bsearch?" ""])
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235
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236 )
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237 "Sample hotlist for WebJump.")
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238
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239 (defconst webjump-state-to-postal-alist
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240 '(("Alabama" . "al") ("Alaska" . "ak") ("Arizona" . "az") ("Arkansas" . "ar")
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241 ("California" . "ca") ("Colorado" . "co") ("Connecticut" . "ct")
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242 ("Delaware" . "de") ("Florida" . "fl") ("Georgia" . "ga") ("Hawaii" . "hi")
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243 ("Idaho" . "id") ("Illinois" . "il") ("Indiana" . "in") ("Iowa" . "ia")
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244 ("Kansas" . "ks") ("Kentucky" . "ky") ("Louisiana" . "la") ("Maine" . "me")
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245 ("Maryland" . "md") ("Massachusetts" . "ma") ("Michigan" . "mi")
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246 ("Minnesota" . "mn") ("Mississippi" . "ms") ("Missouri" . "mo")
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247 ("Montana" . "mt") ("Nebraska" . "ne") ("Nevada" . "nv")
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248 ("New Hampshire" . "nh") ("New Jersey" . "nj") ("New Mexico" . "nm")
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249 ("New York" . "ny") ("North Carolina" . "nc") ("North Dakota" . "nd")
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250 ("Ohio" . "oh") ("Oklahoma" . "ok") ("Oregon" . "or")
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251 ("Pennsylvania" . "pa") ("Rhode Island" . "ri") ("South Carolina" . "sc")
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252 ("South Dakota" . "sd") ("Tennessee" . "tn") ("Texas" . "tx")
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253 ("Utah" . "ut") ("Vermont" . "vt") ("Virginia" . "va")
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254 ("Washington" . "wa") ("West Virginia" . "wv") ("Wisconsin" . "wi")
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255 ("Wyoming" . "wy")))
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256
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257 ;;------------------------------------------------------------ Option Variables
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258
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259 (defvar webjump-sites
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260 webjump-sample-sites
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261 "*Hotlist for WebJump.
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262
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263 The hotlist is represented as an association list, with the CAR of each cell
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264 being the name of the Web site, and the CDR being the definition for the URL of
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265 that site. The URL definition can be a string (the URL), a vector (specifying
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266 a special \"builtin\" which returns a URL), a symbol (name of a function which
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267 returns a URL), or a list (which when `eval'ed yields a URL).
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268
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269 If the URL definition is a vector, then a \"builtin\" is used. A builtin has a
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270 Lisp-like syntax, with the name as the first element of the vector, and any
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271 arguments as the following elements. The three current builtins are `name',
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272 which returns the name of the site as the URL, `simple-query', which
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273 returns a URL that is a function of a query entered by the user, and `mirrors',
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274 which allows the user to select from among multiple mirror sites for the same
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275 content.
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276
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277 The first argument to the `simple-query' builtin is a static URL to use if the
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278 user enters a blank query. The second and third arguments are the prefix and
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279 suffix, respectively, to add to the encoded query the user enters. This
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280 builtin covers Web sites that have single-string searches with the query
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281 embedded in the URL.
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282
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283 The arguments to the `mirrors' builtin are URLs of mirror sites.
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284
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285 If the symbol of a function is given, then the function will be called with the
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286 Web site name (the one you specified in the CAR of the alist cell) as a
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287 parameter. This might come in handy for various kludges.
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288
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289 For convenience, if the `http://', `ftp://', or `file://' prefix is missing
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290 from a URL, WebJump will make a guess at what you wanted and prepend it before
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291 submitting the URL.")
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292
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293 ;;------------------------------------------------------- Sample Site Functions
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294
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295 (defun webjump-to-iwin (name)
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296 (let ((prefix "http://iwin.nws.noaa.gov/")
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297 (state (webjump-read-choice name "state"
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298 (append '(("Puerto Rico" . "pr"))
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299 webjump-state-to-postal-alist))))
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300 (if state
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301 (concat prefix "iwin/" state "/"
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302 (webjump-read-choice name "option"
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303 '(("Hourly Report" . "hourly")
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304 ("State Forecast" . "state")
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305 ("Local Forecast" . "local")
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306 ("Zone Forecast" . "zone")
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307 ("Short-Term Forecast" . "shortterm")
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308 ("Weather Summary" . "summary")
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309 ("Public Information" . "public")
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310 ("Climatic Data" . "climate")
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311 ("Aviation Products" . "aviation")
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312 ("Hydro Products" . "hydro")
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313 ("Special Weather" . "special")
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314 ("Watches and Warnings" . "warnings"))
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315 "zone")
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316 ".html")
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317 prefix)))
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318
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319 (defun webjump-to-javaapi (name)
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320 (let* ((prefix "http://www.javasoft.com/products/JDK/CurrentRelease/api/")
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321 (packages '(("java.applet") ("java.awt") ("java.awt.image")
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322 ("java.awt.peer") ("java.io") ("java.lang") ("java.net")
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323 ("java.util") ("sun.tools.debug")))
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324 (completion-ignore-case t)
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325 (package (completing-read (concat name " package: ") packages nil t)))
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326 (if (webjump-null-or-blank-string-p package)
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327 (concat prefix "packages.html")
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328 (concat prefix "Package-" package ".html"))))
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329
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330 (defun webjump-to-risks (name)
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331 (let (issue volume)
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332 (if (and (setq volume (webjump-read-number (concat name " volume")))
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333 (setq issue (webjump-read-number (concat name " issue"))))
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334 (format "catless.ncl.ac.uk/Risks/%d.%02d.html" volume issue)
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335 "catless.ncl.ac.uk/Risks/")))
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336
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337 ;;-------------------------------------------------------------- Core Functions
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338
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339 ;;;###autoload
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340 (defun webjump ()
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341 "Jumps to a Web site from a programmable hotlist.
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342
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343 See the documentation for the `webjump-sites' variable for how to customize the
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344 hotlist.
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345
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346 Feedback on WebJump can be sent to the author, Neil W. Van Dyke <nwv@acm.org>,
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347 or submitted via `\\[webjump-submit-bug-report]'. The latest version can be
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348 gotten from `http://www.cs.brown.edu/people/nwv/'."
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349 (interactive)
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350 (let* ((completion-ignore-case t)
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351 (item (assoc (completing-read "WebJump to site: " webjump-sites nil t)
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352 webjump-sites))
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353 (name (car item))
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354 (expr (cdr item)))
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355 (funcall browse-url-browser-function
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356 (webjump-url-fix
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357 (cond ((not expr) "")
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358 ((stringp expr) expr)
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359 ((vectorp expr) (webjump-builtin expr name))
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360 ((listp expr) (eval expr))
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361 ((symbolp expr)
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362 (if (fboundp expr)
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363 (funcall expr name)
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364 (error "WebJump URL function \"%s\" undefined." expr)))
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365 (t (error "WebJump URL expression for \"%s\" invalid."
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366 name)))))))
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367
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368 (defun webjump-adult-p ()
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369 (and (boundp 'age) (integerp age) (>= age 21)))
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370
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371 (defun webjump-builtin (expr name)
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372 (if (< (length expr) 1)
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373 (error "WebJump URL builtin for \"%s\" empty." name))
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374 (let ((builtin (aref expr 0)))
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375 (cond
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376 ((eq builtin 'mirrors)
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377 (if (= (length expr) 1)
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378 (error
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379 "WebJump URL builtin \"mirrors\" for \"%s\" needs at least 1 arg."))
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380 (webjump-choose-mirror name (cdr (append expr nil))))
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381 ((eq builtin 'name)
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382 name)
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383 ((eq builtin 'simple-query)
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384 (webjump-builtin-check-args expr name 3)
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385 (webjump-do-simple-query name (aref expr 1) (aref expr 2) (aref expr 3)))
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386 (t (error "WebJump URL builtin \"%s\" for \"%s\" invalid."
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387 builtin name)))))
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388
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389 (defun webjump-builtin-check-args (expr name count)
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390 (or (= (length expr) (1+ count))
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391 (error "WebJump URL builtin \"%s\" for \"%s\" needs %d args."
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392 (aref expr 0) name count)))
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393
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394 (defun webjump-choose-mirror (name urls)
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395 (webjump-read-url-choice (concat name " mirror")
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396 urls
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397 (webjump-mirror-default urls)))
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398
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399 (defun webjump-do-simple-query (name noquery-url query-prefix query-suffix)
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400 (let ((query (webjump-read-string (concat name " query"))))
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401 (if query
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402 (concat query-prefix (webjump-url-encode query) query-suffix)
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403 noquery-url)))
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404
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405 (defun webjump-mirror-default (urls)
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406 ;; Note: This should be modified to apply some simple kludges/heuristics to
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407 ;; pick a site which is likely "close". As a tie-breaker among candidates
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408 ;; judged equally desirable, randomness should be used.
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409 (car urls))
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410
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411 (defun webjump-read-choice (name what choices &optional default)
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412 (let* ((completion-ignore-case t)
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413 (choice (completing-read (concat name " " what ": ") choices nil t)))
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414 (if (webjump-null-or-blank-string-p choice)
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415 default
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416 (cdr (assoc choice choices)))))
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417
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418 (defun webjump-read-number (prompt)
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419 ;; Note: I should make this more robust someday.
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420 (let ((input (webjump-read-string prompt)))
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421 (if input (string-to-number input))))
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422
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423 (defun webjump-read-string (prompt)
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424 (let ((input (read-string (concat prompt ": "))))
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425 (if (webjump-null-or-blank-string-p input) nil input)))
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426
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427 (defun webjump-read-url-choice (what urls &optional default)
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428 ;; Note: Convert this to use `webjump-read-choice' someday.
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429 (let* ((completions (mapcar (function (lambda (n) (cons n n)))
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430 urls))
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431 (input (completing-read (concat what
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432 ;;(if default " (RET for default)" "")
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433 ": ")
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434 completions
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435 nil
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436 t)))
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437 (if (webjump-null-or-blank-string-p input)
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438 default
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439 (car (assoc input completions)))))
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440
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441 (defun webjump-null-or-blank-string-p (str)
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442 (or (null str) (string-match "^[ \t]*$" str)))
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443
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444 (defun webjump-submit-bug-report ()
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445 "Submit via mail a bug report on WebJump."
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446 (interactive)
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447 (require 'reporter)
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448 (reporter-submit-bug-report
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449 webjump-maintainer-address
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450 (concat "webjump.el " webjump-version " " webjump-vc-id)
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451 '(webjump-sites)
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452 nil
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453 nil
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454 (concat
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455 "[Dear bug report submitter: Please ensure that the variable dumps\n"
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456 "below do not contain any information you consider private.]\n")))
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457
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458 (defun webjump-url-encode (str)
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459 (mapconcat '(lambda (c)
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460 (cond ((= c 32) "+")
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461 ((or (and (>= c ?a) (<= c ?z))
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462 (and (>= c ?A) (<= c ?Z))
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463 (and (>= c ?0) (<= c ?9)))
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464 (char-to-string c))
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465 (t (upcase (format "%%%02x" c)))))
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466 str
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467 ""))
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468
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469 (defun webjump-url-fix (url)
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470 (if (webjump-null-or-blank-string-p url)
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471 ""
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472 (webjump-url-fix-trailing-slash
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473 (cond
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474 ((string-match "^[a-zA-Z]+:" url) url)
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475 ((string-match "^/" url) (concat "file://" url))
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476 ((string-match "^\\([^\\./]+\\)" url)
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477 (concat (if (string= (downcase (match-string 1 url)) "ftp")
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478 "ftp"
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479 "http")
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480 "://"
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481 url))
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482 (t url)))))
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483
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484 (defun webjump-url-fix-trailing-slash (url)
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485 (if (string-match "^[a-zA-Z]+://[^/]+$" url)
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486 (concat url "/")
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487 url))
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488
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489 ;;-----------------------------------------------------------------------------
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490
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491 (provide 'webjump)
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492
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493 ;; webjump.el ends here
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