From 3b369e522c335f0665dfd2809fc5f32a37f1f90f Mon Sep 17 00:00:00 2001 From: "Richard M. Stallman" Date: Fri, 30 Aug 1996 16:32:32 +0000 Subject: [PATCH] Initial revision --- lisp/webjump.el | 427 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 427 insertions(+) create mode 100644 lisp/webjump.el diff --git a/lisp/webjump.el b/lisp/webjump.el new file mode 100644 index 00000000000..7160f3aa76d --- /dev/null +++ b/lisp/webjump.el @@ -0,0 +1,427 @@ +;;; webjump.el --- programmable Web hotlist + +;; Copyright (C) 1996 Free Software Foundation + +;; Author: Neil W. Van Dyke +;; 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 , +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 -- 2.39.2