--- /dev/null
+;;; webjump.el --- programmable Web hotlist
+
+;; Copyright (C) 1996 Free Software Foundation
+
+;; Author: Neil W. Van Dyke <nwv@acm.org>
+;; Created: Fri 09 Aug 1996
+;; Keywords: comm www
+;; X-URL: http://www.cs.brown.edu/people/nwv/
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation; either version 2, or (at your option)
+;; any later version.
+
+;; GNU Emacs is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs; see the file COPYING. If not, write to the
+;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+;; Boston, MA 02111-1307, USA.
+
+;;; Commentary:
+
+;; WebJump provides a sort of ``programmable hotlist'' of Web sites that can
+;; quickly be invoked in your Web browser. Each Web site in the hotlist has a
+;; name, and you select the desired site name via a completing string prompt in
+;; the minibuffer. The URL for each Web site is defined as a static string or
+;; a built-in or custom function, allowing interactive prompting for
+;; site-specific queries and options.
+
+;; Note that WebJump was originally intended to complement your conventional
+;; browser-based hotlist, not replace it. (Though there's no reason you
+;; couldn't use WebJump for your entire hotlist if you were so inclined.)
+
+;; The `webjump-sites' variable, which defines the hotlist, defaults to some
+;; example sites. You'll probably want to override it with your own favorite
+;; sites. The documentation for the variable describes the syntax.
+
+;; You may wish to add something like the following to your `.emacs' file:
+;;
+;; (load "webjump")
+;; (global-set-key "\C-cj" 'webjump)
+;; (setq webjump-sites
+;; (append '(
+;; ("My Home Page" . "www.someisp.net/users/joebobjr/")
+;; ("Pop's Site" . "www.joebob-and-son.com/")
+;; )
+;; webjump-sample-sites))
+;;
+;; The above loads this package, binds `C-c j' to invoke WebJump, and adds
+;; your personal favorite sites to the hotlist.
+
+;; The `webjump-sample-sites' constant mostly contains sites that are expected
+;; to be generally useful to Emacs users or that have some sort of query which
+;; can be coded in WebJump. There are two main goals of this sample site list:
+;; (1) demonstrate WebJump capabilities and usage; (2) provide definitions for
+;; many popular sites so that people don't have to reinvent the wheel. A few
+;; assorted other sites have been thrown in on a whim. No commercial sites are
+;; included unless they provide a free, generally-useful service. Inclusion of
+;; a site does not represent an endorsement. Please contact the maintainer
+;; with change requests.
+
+;; The `browse-url' package is used to submit URLs to the browser, so any
+;; browser-specific configuration should be done there.
+
+;; WebJump inherits a small amount code from my `altavista.el' package, and is
+;; intended to obsolete that package.
+
+;;; Code:
+
+;;-------------------------------------------------------- Package Dependencies
+
+(require 'browse-url)
+
+;;------------------------------------------------------------------- Constants
+
+(defconst-TEST webjump-sample-sites
+ '(("AltaVista" .
+ [simple-query
+ "www.altavista.digital.com"
+ "www.altavista.digital.com/cgi-bin/query?pg=aq&what=web&fmt=.&q="
+ "&r=&d0=&d1="])
+ ("Archie" .
+ [simple-query "http://hoohoo.ncsa.uiuc.edu/cgi-bin/AA.pl"
+ "http://hoohoo.ncsa.uiuc.edu/cgi-bin/AA.pl?query=" ""])
+ ("Bastard Operator from Hell" . "www.replay.com/bofh/")
+ ("Brown University" .
+ [simple-query "www.brown.edu" "www.brown.edu/cgi-local/bsearch?" ""])
+ ("Computer Professionals for Social Responsibility" . "www.cpsr.org/dox/")
+ ("Digital Espresso" .
+ [simple-query "www.io.org/~mentor/DigitalEspresso.html"
+ "www.jars.com/cgi-bin/aglimpse/01?query="
+ "&case=on&whole=on&errors=0&maxfiles=100&maxlines=30"])
+ ("Dilbert" . "www.unitedmedia.com/comics/dilbert/")
+ ("Electronic Frontier Foundation" . "www.eff.org")
+ ("Emacs Lisp Archive" .
+ "ftp://archive.cis.ohio-state.edu/pub/gnu/emacs/elisp-archive/")
+ ("Free Software Foundation" . "www.fsf.org")
+ ("GNU FTP Archive". [mirrors
+ "ftp://prep.ai.mit.edu/pub/gnu/"
+ ;; ASIA:
+ "ftp://ftp.cs.titech.ac.jp"
+ "ftp://tron.um.u-tokyo.ac.jp/pub/GNU/prep"
+ "ftp://cair-archive.kaist.ac.kr/pub/gnu"
+ "ftp://ftp.nectec.or.th/pub/mirrors/gnu"
+ ;; AUSTRALIA:
+ "ftp://archie.au/gnu"
+ "ftp://archie.oz/gnu"
+ "ftp://archie.oz.au/gnu"
+ ;; AFRICA:
+ "ftp://ftp.sun.ac.za/pub/gnu"
+ ;; MIDDLE-EAST:
+ "ftp://ftp.technion.ac.il/pub/unsupported/gnu"
+ ;; EUROPE:
+ "ftp://irisa.irisa.fr/pub/gnu"
+ "ftp://ftp.univ-lyon1.fr/pub/gnu"
+ "ftp://ftp.mcc.ac.uk"
+ "ftp://unix.hensa.ac.uk/mirrors/uunet/systems/gnu"
+ "ftp://src.doc.ic.ac.uk/gnu"
+ "ftp://ftp.ieunet.ie/pub/gnu"
+ "ftp://ftp.eunet.ch"
+ "ftp://nic.switch.ch/mirror/gnu"
+ "ftp://ftp.informatik.rwth-aachen.de/pub/gnu"
+ "ftp://ftp.informatik.tu-muenchen.de"
+ "ftp://ftp.win.tue.nl/pub/gnu"
+ "ftp://ftp.nl.net"
+ "ftp://ftp.etsimo.uniovi.es/pub/gnu"
+ "ftp://ftp.funet.fi/pub/gnu"
+ "ftp://ftp.denet.dk"
+ "ftp://ftp.stacken.kth.se"
+ "ftp://isy.liu.se"
+ "ftp://ftp.luth.se/pub/unix/gnu"
+ "ftp://ftp.sunet.se/pub/gnu"
+ "ftp://archive.eu.net"
+ ;; SOUTH AMERICA:
+ "ftp://ftp.inf.utfsm.cl/pub/gnu"
+ "ftp://ftp.unicamp.br/pub/gnu"
+ ;; WESTERN CANADA:
+ "ftp://ftp.cs.ubc.ca/mirror2/gnu"
+ ;; USA:
+ "ftp://wuarchive.wustl.edu/systems/gnu"
+ "ftp://labrea.stanford.edu"
+ "ftp://ftp.digex.net/pub/gnu"
+ "ftp://ftp.kpc.com/pub/mirror/gnu"
+ "ftp://f.ms.uky.edu/pub3/gnu"
+ "ftp://jaguar.utah.edu/gnustuff"
+ "ftp://ftp.hawaii.edu/mirrors/gnu"
+ "ftp://uiarchive.cso.uiuc.edu/pub/gnu"
+ "ftp://ftp.cs.columbia.edu/archives/gnu/prep"
+ "ftp://gatekeeper.dec.com/pub/GNU"
+ "ftp://ftp.uu.net/systems/gnu"
+ ])
+ ("Insidious Big Brother Database" . "home.netscape.com/people/jwz/bbdb/")
+ ("Interactive Weather Information Network" . webjump-to-iwin)
+ ("Java API" . webjump-to-javaapi)
+ ("Lycos" .
+ [simple-query "www.lycos.com" "www.lycos.com/cgi-bin/pursuit?query=" ""])
+ ("Mailcrypt" . "cag-www.lcs.mit.edu/mailcrypt/")
+ ("Pretty Good Privacy" . "web.mit.edu/network/pgp.html")
+ ("Playboy" . (if (webjump-adult-p) "www.playboy.com" "www.whitehouse.gov"))
+ ("Usenet FAQs" .
+ [simple-query "www.cis.ohio-state.edu/hypertext/faq/usenet/FAQ-List.html"
+ "www.cis.ohio-state.edu/htbin/search-usenet-faqs/form?find="
+ ""])
+ ("Risks Digest" . webjump-to-risks)
+ ("RTFM Usenet FAQs by Group" .
+ "ftp://rtfm.mit.edu/pub/usenet-by-group/")
+ ("RTFM Usenet FAQs by Hierachy" .
+ "ftp://rtfm.mit.edu/pub/usenet-by-hierarchy/")
+ ("Webster" .
+ [simple-query "c.gp.cs.cmu.edu:5103/prog/webster"
+ "gs213.sp.cs.cmu.edu/prog/webster?" ""])
+ ("X Consortium Archive". "ftp.x.org")
+ ("Yahoo" .
+ [simple-query "www.yahoo.com" "search.yahoo.com/bin/search?p=" ""])
+ ("Yahoo Emacs" .
+ "www.yahoo.com/Computers_and_Internet/Software/Editors/Emacs/")
+ ("Yahoo Reference" "www.yahoo.com/Reference/")
+ )
+ "Sample hotlist for WebJump.")
+
+(defconst webjump-state-to-postal-alist
+ '(("Alabama" . "al") ("Alaska" . "ak") ("Arizona" . "az") ("Arkansas" . "ar")
+ ("California" . "ca") ("Colorado" . "co") ("Connecticut" . "ct")
+ ("Delaware" . "de") ("Florida" . "fl") ("Georgia" . "ga") ("Hawaii" . "hi")
+ ("Idaho" . "id") ("Illinois" . "il") ("Indiana" . "in") ("Iowa" . "ia")
+ ("Kansas" . "ks") ("Kentucky" . "ky") ("Louisiana" . "la") ("Maine" . "me")
+ ("Maryland" . "md") ("Massachusetts" . "ma") ("Michigan" . "mi")
+ ("Minnesota" . "mn") ("Mississippi" . "ms") ("Missouri" . "mo")
+ ("Montana" . "mt") ("Nebraska" . "ne") ("Nevada" . "nv")
+ ("New Hampshire" . "nh") ("New Jersey" . "nj") ("New Mexico" . "nm")
+ ("New York" . "ny") ("North Carolina" . "nc") ("North Dakota" . "nd")
+ ("Ohio" . "oh") ("Oklahoma" . "ok") ("Oregon" . "or")
+ ("Pennsylvania" . "pa") ("Rhode Island" . "ri") ("South Carolina" . "sc")
+ ("South Dakota" . "sd") ("Tennessee" . "tn") ("Texas" . "tx")
+ ("Utah" . "ut") ("Vermont" . "vt") ("Virginia" . "va")
+ ("Washington" . "wa") ("West Virginia" . "wv") ("Wisconsin" . "wi")
+ ("Wyoming" . "wy")))
+
+;;------------------------------------------------------------ Option Variables
+
+(defvar webjump-sites
+ webjump-sample-sites
+ "*Hotlist for WebJump.
+
+The hotlist is represented as an association list, with the CAR of each cell
+being the name of the Web site, and the CDR being the definition for the URL of
+that site. The URL definition can be a string (the URL), a vector (specifying
+a special \"builtin\" which returns a URL), a symbol (name of a function which
+returns a URL), or a list (which when `eval'ed yields a URL).
+
+If the URL definition is a vector, then a \"builtin\" is used. A builtin has a
+Lisp-like syntax, with the name as the first element of the vector, and any
+arguments as the following elements. The three current builtins are `name',
+which returns the name of the site as the URL, `simple-query', which
+returns a URL that is a function of a query entered by the user, and `mirrors',
+which allows the user to select from among multiple mirror sites for the same
+content.
+
+The first argument to the `simple-query' builtin is a static URL to use if the
+user enters a blank query. The second and third arguments are the prefix and
+suffix, respectively, to add to the encoded query the user enters. This
+builtin covers Web sites that have single-string searches with the query
+embedded in the URL.
+
+The arguments to the `mirrors' builtin are URLs of mirror sites.
+
+If the symbol of a function is given, then the function will be called with the
+Web site name (the one you specified in the CAR of the alist cell) as a
+parameter. This might come in handy for various kludges.
+
+For convenience, if the `http://', `ftp://', or `file://' prefix is missing
+from a URL, WebJump will make a guess at what you wanted and prepend it before
+submitting the URL.")
+
+;;------------------------------------------------------- Sample Site Functions
+
+(defun webjump-to-iwin (name)
+ (let ((prefix "http://iwin.nws.noaa.gov/")
+ (state (webjump-read-choice name "state"
+ (append '(("Puerto Rico" . "pr"))
+ webjump-state-to-postal-alist))))
+ (if state
+ (concat prefix "iwin/" state "/"
+ (webjump-read-choice name "option"
+ '(("Hourly Report" . "hourly")
+ ("State Forecast" . "state")
+ ("Local Forecast" . "local")
+ ("Zone Forecast" . "zone")
+ ("Short-Term Forecast" . "shortterm")
+ ("Weather Summary" . "summary")
+ ("Public Information" . "public")
+ ("Climatic Data" . "climate")
+ ("Aviation Products" . "aviation")
+ ("Hydro Products" . "hydro")
+ ("Special Weather" . "special")
+ ("Watches and Warnings" . "warnings"))
+ "zone")
+ ".html")
+ prefix)))
+
+(defun webjump-to-javaapi (name)
+ (let* ((prefix "http://www.javasoft.com/products/JDK/CurrentRelease/api/")
+ (packages '(("java.applet") ("java.awt") ("java.awt.image")
+ ("java.awt.peer") ("java.io") ("java.lang") ("java.net")
+ ("java.util") ("sun.tools.debug")))
+ (completion-ignore-case t)
+ (package (completing-read (concat name " package: ") packages nil t)))
+ (if (webjump-null-or-blank-string-p package)
+ (concat prefix "packages.html")
+ (concat prefix "Package-" package ".html"))))
+
+(defun webjump-to-risks (name)
+ (let (issue volume)
+ (if (and (setq volume (webjump-read-number (concat name " volume")))
+ (setq issue (webjump-read-number (concat name " issue"))))
+ (format "catless.ncl.ac.uk/Risks/%d.%02d.html" volume issue)
+ "catless.ncl.ac.uk/Risks/")))
+
+;;-------------------------------------------------------------- Core Functions
+
+;;;###autoload
+(defun webjump ()
+ "Jumps to a Web site from a programmable hotlist.
+
+See the documentation for the `webjump-sites' variable for how to customize the
+hotlist.
+
+Feedback on WebJump can be sent to the author, Neil W. Van Dyke <nwv@acm.org>,
+or submitted via `\\[webjump-submit-bug-report]'. The latest version can be
+gotten from `http://www.cs.brown.edu/people/nwv/'."
+ (interactive)
+ (let* ((completion-ignore-case t)
+ (item (assoc (completing-read "WebJump to site: " webjump-sites nil t)
+ webjump-sites))
+ (name (car item))
+ (expr (cdr item)))
+ (funcall browse-url-browser-function
+ (webjump-url-fix
+ (cond ((not expr) "")
+ ((stringp expr) expr)
+ ((vectorp expr) (webjump-builtin expr name))
+ ((listp expr) (eval expr))
+ ((symbolp expr)
+ (if (fboundp expr)
+ (funcall expr name)
+ (error "WebJump URL function \"%s\" undefined." expr)))
+ (t (error "WebJump URL expression for \"%s\" invalid."
+ name)))))))
+
+(defun webjump-adult-p ()
+ (and (boundp 'age) (integerp age) (>= age 21)))
+
+(defun webjump-builtin (expr name)
+ (if (< (length expr) 1)
+ (error "WebJump URL builtin for \"%s\" empty." name))
+ (let ((builtin (aref expr 0)))
+ (cond
+ ((eq builtin 'mirrors)
+ (if (= (length expr) 1)
+ (error
+ "WebJump URL builtin \"mirrors\" for \"%s\" needs at least 1 arg."))
+ (webjump-choose-mirror name (cdr (append expr nil))))
+ ((eq builtin 'name)
+ name)
+ ((eq builtin 'simple-query)
+ (webjump-builtin-check-args expr name 3)
+ (webjump-do-simple-query name (aref expr 1) (aref expr 2) (aref expr 3)))
+ (t (error "WebJump URL builtin \"%s\" for \"%s\" invalid."
+ builtin name)))))
+
+(defun webjump-builtin-check-args (expr name count)
+ (or (= (length expr) (1+ count))
+ (error "WebJump URL builtin \"%s\" for \"%s\" needs %d args."
+ (aref expr 0) name count)))
+
+(defun webjump-choose-mirror (name urls)
+ (webjump-read-url-choice (concat name " mirror")
+ urls
+ (webjump-mirror-default urls)))
+
+(defun webjump-do-simple-query (name noquery-url query-prefix query-suffix)
+ (let ((query (webjump-read-string (concat name " query"))))
+ (if query
+ (concat query-prefix (webjump-url-encode query) query-suffix)
+ noquery-url)))
+
+(defun webjump-mirror-default (urls)
+ ;; Note: This should be modified to apply some simple kludges/heuristics to
+ ;; pick a site which is likely "close". As a tie-breaker among candidates
+ ;; judged equally desirable, randomness should be used.
+ (car urls))
+
+(defun webjump-read-choice (name what choices &optional default)
+ (let* ((completion-ignore-case t)
+ (choice (completing-read (concat name " " what ": ") choices nil t)))
+ (if (webjump-null-or-blank-string-p choice)
+ default
+ (cdr (assoc choice choices)))))
+
+(defun webjump-read-number (prompt)
+ ;; Note: I should make this more robust someday.
+ (let ((input (webjump-read-string prompt)))
+ (if input (string-to-number input))))
+
+(defun webjump-read-string (prompt)
+ (let ((input (read-string (concat prompt ": "))))
+ (if (webjump-null-or-blank-string-p input) nil input)))
+
+(defun webjump-read-url-choice (what urls &optional default)
+ ;; Note: Convert this to use `webjump-read-choice' someday.
+ (let* ((completions (mapcar (function (lambda (n) (cons n n)))
+ urls))
+ (input (completing-read (concat what
+ ;;(if default " (RET for default)" "")
+ ": ")
+ completions
+ nil
+ t)))
+ (if (webjump-null-or-blank-string-p input)
+ default
+ (car (assoc input completions)))))
+
+(defun webjump-null-or-blank-string-p (str)
+ (or (null str) (string-match "^[ \t]*$" str)))
+
+(defun webjump-url-encode (str)
+ (mapconcat '(lambda (c)
+ (cond ((= c 32) "+")
+ ((or (and (>= c ?a) (<= c ?z))
+ (and (>= c ?A) (<= c ?Z))
+ (and (>= c ?0) (<= c ?9)))
+ (char-to-string c))
+ (t (upcase (format "%%%02x" c)))))
+ str
+ ""))
+
+(defun webjump-url-fix (url)
+ (if (webjump-null-or-blank-string-p url)
+ ""
+ (webjump-url-fix-trailing-slash
+ (cond
+ ((string-match "^[a-zA-Z]+:" url) url)
+ ((string-match "^/" url) (concat "file://" url))
+ ((string-match "^\\([^\\./]+\\)" url)
+ (concat (if (string= (downcase (match-string 1 url)) "ftp")
+ "ftp"
+ "http")
+ "://"
+ url))
+ (t url)))))
+
+(defun webjump-url-fix-trailing-slash (url)
+ (if (string-match "^[a-zA-Z]+://[^/]+$" url)
+ (concat url "/")
+ url))
+
+;;-----------------------------------------------------------------------------
+
+(provide 'webjump)
+
+;; webjump.el ends here
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