lisp/net/webjump.el

   1 ;;; webjump.el --- programmable Web hotlist
   2
   3 ;; Copyright (C) 1996-1997, 2001-2014 Free Software Foundation, Inc.
   4
   5 ;; Author:    Neil W. Van Dyke <nwv@acm.org>
   6 ;; Created:   09-Aug-1996
   7 ;; Keywords:  comm www
   8
   9 ;; This file is part of GNU Emacs.
  10
  11 ;; GNU Emacs is free software: you can redistribute it and/or modify
  12 ;; it under the terms of the GNU General Public License as published by
  13 ;; the Free Software Foundation, either version 3 of the License, or
  14 ;; (at your option) any later version.
  15
  16 ;; GNU Emacs is distributed in the hope that it will be useful,
  17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 ;; GNU General Public License for more details.
  20
  21 ;; You should have received a copy of the GNU General Public License
  22 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  23
  24 ;;; Commentary:
  25
  26 ;; WebJump provides a sort of ``programmable hotlist'' of Web sites that can
  27 ;; quickly be invoked in your Web browser.  Each Web site in the hotlist has a
  28 ;; name, and you select the desired site name via a completing string prompt in
  29 ;; the minibuffer.  The URL for each Web site is defined as a static string or
  30 ;; a built-in or custom function, allowing interactive prompting for
  31 ;; site-specific queries and options.
  32
  33 ;; Note that WebJump was originally intended to complement your conventional
  34 ;; browser-based hotlist, not replace it.  (Though there's no reason you
  35 ;; couldn't use WebJump for your entire hotlist if you were so inclined.)
  36
  37 ;; The `webjump-sites' variable, which defines the hotlist, defaults to some
  38 ;; example sites.  You'll probably want to override it with your own favorite
  39 ;; sites.  The documentation for the variable describes the syntax.
  40
  41 ;; You may wish to add something like the following to your init file:
  42 ;;
  43 ;;   (require 'webjump)
  44 ;;   (global-set-key "\C-cj" 'webjump)
  45 ;;   (setq webjump-sites
  46 ;;         (append '(
  47 ;;                   ("My Home Page" . "www.someisp.net/users/joebobjr/")
  48 ;;                   ("Pop's Site"   . "www.joebob-and-son.com/")
  49 ;;                   )
  50 ;;                 webjump-sample-sites))
  51 ;;
  52 ;; The above loads this package, binds `C-c j' to invoke WebJump, and adds your
  53 ;; personal favorite sites to the hotlist.
  54
  55 ;; The `webjump-sample-sites' variable mostly contains some site entries that
  56 ;; are expected to be generally relevant to many users, but excluding
  57 ;; those that the GNU project would not want to recommend.
  58
  59 ;; The `browse-url' package is used to submit URLs to the browser, so any
  60 ;; browser-specific configuration should be done there.
  61
  62 ;;; Code:
  63
  64 ;;-------------------------------------------------------- Package Dependencies
  65
  66 (require 'browse-url)
  67
  68 ;;------------------------------------------------------------------- Constants
  69
  70 (defvar webjump-sample-sites
  71   '(
  72     ;; FSF, not including Emacs-specific.
  73     ("GNU Project FTP Archive" .
  74      ;; GNU FTP Mirror List from http://www.gnu.org/order/ftp.html
  75      [mirrors "ftp://ftp.gnu.org/pub/gnu/"
  76               ;; United States
  77               "ftp://mirrors.kernel.org/gnu"
  78               "ftp://gatekeeper.dec.com/pub/GNU/"
  79               "ftp://ftp.keystealth.org/pub/gnu/"
  80               "ftp://mirrors.usc.edu/pub/gnu/"
  81               "ftp://cudlug.cudenver.edu/pub/mirrors/ftp.gnu.org/"
  82               "ftp://ftp.cise.ufl.edu/pub/mirrors/GNU/"
  83               "ftp://uiarchive.cso.uiuc.edu/pub/ftp/ftp.gnu.org/gnu/"
  84               "ftp://gnu.cs.lewisu.edu/gnu/"
  85               "ftp://ftp.in-span.net/pub/mirrors/ftp.gnu.org/"
  86               "ftp://gnu.ms.uky.edu/pub/mirrors/gnu/"
  87               "ftp://ftp.algx.net/pub/gnu/"
  88               "ftp://aeneas.mit.edu/pub/gnu/"
  89               "ftp://ftp.egr.msu.edu/pub/gnu/"
  90               "ftp://ftp.wayne.edu/pub/gnu/"
  91               "ftp://wuarchive.wustl.edu/mirrors/gnu/"
  92               "ftp://gnu.teleglobe.net/ftp.gnu.org/"
  93               "ftp://ftp.cs.columbia.edu/archives/gnu/prep/"
  94               "ftp://ftp.ece.cornell.edu/pub/mirrors/gnu/"
  95               "ftp://ftp.ibiblio.org/pub/mirrors/gnu/"
  96               "ftp://ftp.cis.ohio-state.edu/mirror/gnu/"
  97               "ftp://ftp.club.cc.cmu.edu/gnu/"
  98               "ftp://ftp.sunsite.utk.edu/pub/gnu/ftp/"
  99               "ftp://thales.memphis.edu/pub/gnu/"
 100               "ftp://gnu.wwc.edu"
 101               "ftp://ftp.twtelecom.net/pub/GNU/"
 102               ;; Africa
 103               "ftp://ftp.sun.ac.za/mirrorsites/ftp.gnu.org"
 104               ;; The Americas
 105               "ftp://ftp.unicamp.br/pub/gnu/"
 106               "ftp://master.softaplic.com.br/pub/gnu/"
 107               "ftp://ftp.matrix.com.br/pub/gnu/"
 108               "ftp://ftp.pucpr.br/gnu"
 109               "ftp://ftp.linorg.usp.br/gnu"
 110               "ftp://ftp.cs.ubc.ca/mirror2/gnu/"
 111               "ftp://cs.ubishops.ca/pub/ftp.gnu.org/"
 112               "ftp://ftp.inf.utfsm.cl/pub/gnu/"
 113               "ftp://sunsite.ulatina.ac.cr/Mirrors/GNU/"
 114               "ftp://www.gnu.unam.mx/pub/gnu/software/"
 115               "ftp://gnu.cem.itesm.mx/pub/mirrors/gnu.org/"
 116               "ftp://ftp.azc.uam.mx/mirrors/gnu/"
 117               ;; Australia
 118               "ftp://mirror.aarnet.edu.au/pub/gnu/"
 119               "ftp://gnu.mirror.pacific.net.au/gnu/"
 120               ;; Asia
 121               "ftp://ftp.cs.cuhk.edu.hk/pub/gnu/gnu/"
 122               "ftp://sunsite.ust.hk/pub/gnu/"
 123               "ftp://ftp.gnupilgrims.org/pub/gnu"
 124               "ftp://www.imtech.res.in/mirror/gnuftp/"
 125               "ftp://kambing.vlsm.org/gnu"
 126               "ftp://ftp.cs.huji.ac.il/mirror/GNU/"
 127               "ftp://tron.um.u-tokyo.ac.jp/pub/GNU/"
 128               "ftp://core.ring.gr.jp/pub/GNU/"
 129               "ftp://ftp.ring.gr.jp/pub/GNU/"
 130               "ftp://mirrors.hbi.co.jp/gnu/"
 131               "ftp://ftp.cs.titech.ac.jp/pub/gnu/"
 132               "ftp://ftpmirror.hanyang.ac.kr/GNU/"
 133               "ftp://ftp.linux.sarang.net/mirror/gnu/gnu/"
 134               "ftp://ftp.xgate.co.kr/pub/mirror/gnu/"
 135               "ftp://ftp://gnu.xinicks.com/"
 136               "ftp://ftp.isu.net.sa/pub/gnu/"
 137               "ftp://ftp.nctu.edu.tw/UNIX/gnu/"
 138               "ftp://coda.nctu.edu.tw/UNIX/gnu/"
 139               "ftp://ftp1.sinica.edu.tw/pub3/GNU/gnu/"
 140               "ftp://gnu.cdpa.nsysu.edu.tw/gnu"
 141               "ftp://ftp.nectec.or.th/pub/mirrors/gnu/"
 142               ;; Europe
 143               "ftp://ftp.gnu.vbs.at/"
 144               "ftp://ftp.univie.ac.at/packages/gnu/"
 145               "ftp://gd.tuwien.ac.at/gnu/gnusrc/"
 146               "ftp://ftp.belnet.be/mirror/ftp.gnu.org/"
 147               "ftp://gnu.blic.net/pub/gnu/"
 148               "ftp://ftp.fi.muni.cz/pub/gnu/"
 149               "ftp://ftp.dkuug.dk/pub/gnu/"
 150               "ftp://sunsite.dk/mirrors/gnu"
 151               "ftp://ftp.funet.fi/pub/gnu/prep/"
 152               "ftp://ftp.irisa.fr/pub/gnu/"
 153               "ftp://ftp.cs.univ-paris8.fr/mirrors/ftp.gnu.org/"
 154               "ftp://ftp.cs.tu-berlin.de/pub/gnu/"
 155               "ftp://ftp.leo.org/pub/comp/os/unix/gnu/"
 156               "ftp://ftp.informatik.rwth-aachen.de/pub/gnu/"
 157               "ftp://ftp.de.uu.net/pub/gnu/"
 158               "ftp://ftp.freenet.de/pub/ftp.gnu.org/gnu/"
 159               "ftp://ftp.cs.uni-bonn.de/pub/gnu/"
 160               "ftp://ftp-stud.fht-esslingen.de/pub/Mirrors/ftp.gnu.org/"
 161               "ftp://ftp.stw-bonn.de/pub/mirror/ftp.gnu.org/"
 162               "ftp://ftp.math.uni-bremen.de/pub/gnu"
 163               "ftp://ftp.forthnet.gr/pub/gnu/"
 164               "ftp://ftp.ntua.gr/pub/gnu/"
 165               "ftp://ftp.duth.gr/pub/gnu/"
 166               "ftp://ftp.physics.auth.gr/pub/gnu/"
 167               "ftp://ftp.esat.net/pub/gnu/"
 168               "ftp://ftp.heanet.ie/mirrors/ftp.gnu.org"
 169               "ftp://ftp.lugroma2.org/pub/gnu/"
 170               "ftp://ftp.gnu.inetcosmos.org/pub/gnu/"
 171               "ftp://ftp.digitaltrust.it/pub/gnu"
 172               "ftp://ftp://rm.mirror.garr.it/mirrors/gnuftp"
 173               "ftp://ftp.nluug.nl/pub/gnu/"
 174               "ftp://ftp.mirror.nl/pub/mirror/gnu/"
 175               "ftp://ftp.nl.uu.net/pub/gnu/"
 176               "ftp://mirror.widexs.nl/pub/gnu/"
 177               "ftp://ftp.easynet.nl/mirror/GNU/"
 178               "ftp://ftp.win.tue.nl/pub/gnu"
 179               "ftp://gnu.mirror.vuurwerk.net/pub/GNU/"
 180               "ftp://gnu.kookel.org/pub/ftp.gnu.org/"
 181               "ftp://ftp.uninett.no/pub/gnu/"
 182               "ftp://ftp.task.gda.pl/pub/gnu/"
 183               "ftp://sunsite.icm.edu.pl/pub/gnu/"
 184               "ftp://ftp.man.poznan.pl/pub/gnu"
 185               "ftp://ftp.ist.utl.pt/pub/GNU/gnu/"
 186               "ftp://ftp.telepac.pt/pub/gnu/"
 187               "ftp://ftp.timisoara.roedu.net/mirrors/ftp.gnu.org/pub/gnu"
 188               "ftp://ftp.chg.ru/pub/gnu/"
 189               "ftp://gnuftp.axitel.ru/"
 190               "ftp://ftp.arnes.si/software/gnu/"
 191               "ftp://ftp.etsimo.uniovi.es/pub/gnu/"
 192               "ftp://ftp.rediris.es/pub/gnu/"
 193               "ftp://ftp.chl.chalmers.se/pub/gnu/"
 194               "ftp://ftp.isy.liu.se/pub/gnu/"
 195               "ftp://ftp.luth.se/pub/unix/gnu/"
 196               "ftp://ftp.stacken.kth.se/pub/gnu/"
 197               "ftp://ftp.sunet.se/pub/gnu/"
 198               "ftp://sunsite.cnlab-switch.ch/mirror/gnu/"
 199               "ftp://ftp.ulak.net.tr/gnu/"
 200               "ftp://ftp.gnu.org.ua"
 201               "ftp://ftp.mcc.ac.uk/pub/gnu/"
 202               "ftp://ftp.mirror.ac.uk/sites/ftp.gnu.org/gnu/"
 203               "ftp://ftp.warwick.ac.uk/pub/gnu/"
 204               "ftp://ftp.hands.com/ftp.gnu.org/"
 205               "ftp://gnu.teleglobe.net/ftp.gnu.org/"])
 206     ("GNU Project Home Page" . "www.gnu.org")
 207
 208     ;; Emacs.
 209     ("Emacs Home Page" .
 210      "www.gnu.org/software/emacs/emacs.html")
 211     ("Savannah Emacs page" .
 212      "savannah.gnu.org/projects/emacs")
 213     ("Emacs Lisp List" .
 214      "www.damtp.cam.ac.uk/user/eglen/emacs/ell.html")
 215     ("Emacs Wiki" .
 216      [simple-query "www.emacswiki.org"
 217                    "www.emacswiki.org/cgi-bin/wiki/" ""])
 218
 219     ;; Internet search engines.
 220     ("DuckDuckGo" .
 221      [simple-query "duckduckgo.com"
 222                    "duckduckgo.com/?q=" ""])
 223     ("Google" .
 224      [simple-query "www.google.com"
 225                    "www.google.com/search?q=" ""])
 226     ("Google Groups" .
 227      [simple-query "groups.google.com"
 228                    "groups.google.com/groups?q=" ""])
 229     ("Yahoo" .
 230      [simple-query "www.yahoo.com" "search.yahoo.com/search?p=" ""])
 231     ("Yahoo: Reference" . "www.yahoo.com/Reference/")
 232     ("Wikipedia" .
 233      [simple-query "wikipedia.org" "wikipedia.org/wiki/" ""])
 234
 235     ;; Misc. general interest.
 236     ("Interactive Weather Information Network" . webjump-to-iwin)
 237     ("Usenet FAQs" .
 238      "www.faqs.org/faqs/")
 239     ("RTFM Usenet FAQs by Group" .
 240      "ftp://rtfm.mit.edu/pub/usenet-by-group/")
 241     ("RTFM Usenet FAQs by Hierarchy" .
 242      "ftp://rtfm.mit.edu/pub/usenet-by-hierarchy/")
 243     ("X Consortium Archive" . "ftp.x.org")
 244
 245     ;; Computer social issues, privacy, professionalism.
 246     ("Association for Computing Machinery" . "www.acm.org")
 247     ("Computer Professionals for Social Responsibility" . "www.cpsr.org")
 248     ("Electronic Frontier Foundation" . "www.eff.org")
 249     ("IEEE Computer Society" . "www.computer.org")
 250     ("Risks Digest" . webjump-to-risks)
 251
 252     ;; More.
 253     ("Supplemental Web site list for webjump" .
 254      "www.neilvandyke.org/webjump/")
 255
 256     )
 257   "Sample hotlist for WebJump.  See the documentation for the `webjump'
 258 function and the `webjump-sites' variable.")
 259
 260 (defvar webjump-state-to-postal-alist
 261   '(("Alabama" . "al") ("Alaska" . "ak") ("Arizona" . "az") ("Arkansas" . "ar")
 262     ("California" . "ca") ("Colorado" . "co") ("Connecticut" . "ct")
 263     ("Delaware" . "de") ("Florida" . "fl") ("Georgia" . "ga") ("Hawaii" . "hi")
 264     ("Idaho" . "id") ("Illinois" . "il") ("Indiana" . "in") ("Iowa" . "ia")
 265     ("Kansas" . "ks") ("Kentucky" . "ky") ("Louisiana" . "la") ("Maine" . "me")
 266     ("Maryland" . "md") ("Massachusetts" . "ma") ("Michigan" . "mi")
 267     ("Minnesota" . "mn") ("Mississippi" . "ms") ("Missouri" . "mo")
 268     ("Montana" . "mt") ("Nebraska" . "ne") ("Nevada" . "nv")
 269     ("New Hampshire" . "nh") ("New Jersey" . "nj") ("New Mexico" . "nm")
 270     ("New York" . "ny") ("North Carolina" . "nc") ("North Dakota" . "nd")
 271     ("Ohio" . "oh") ("Oklahoma" . "ok") ("Oregon" . "or")
 272     ("Pennsylvania" . "pa") ("Rhode Island" . "ri") ("South Carolina" . "sc")
 273     ("South Dakota" . "sd") ("Tennessee" . "tn") ("Texas" . "tx")
 274     ("Utah" . "ut") ("Vermont" . "vt") ("Virginia" . "va")
 275     ("Washington" . "wa") ("West Virginia" . "wv") ("Wisconsin" . "wi")
 276     ("Wyoming" . "wy")))
 277
 278 ;;------------------------------------------------------------ Option Variables
 279
 280 (defvar webjump-sites
 281   webjump-sample-sites
 282   "Hotlist for WebJump.
 283
 284 The hotlist is represented as an association list, with the CAR of each cell
 285 being the name of the Web site, and the CDR being the definition for the URL of
 286 that site.  The URL definition can be a string (the URL), a vector (specifying
 287 a special \"builtin\" which returns a URL), a symbol (name of a function which
 288 returns a URL), or a list (which when `eval'ed yields a URL).
 289
 290 If the URL definition is a vector, then a \"builtin\" is used.  A builtin has a
 291 Lisp-like syntax, with the name as the first element of the vector, and any
 292 arguments as the following elements.  The three current builtins are `name',
 293 which returns the name of the site as the URL, `simple-query', which
 294 returns a URL that is a function of a query entered by the user, and `mirrors',
 295 which allows the user to select from among multiple mirror sites for the same
 296 content.
 297
 298 The first argument to the `simple-query' builtin is a static URL to use if the
 299 user enters a blank query.  The second and third arguments are the prefix and
 300 suffix, respectively, to add to the encoded query the user enters.  This
 301 builtin covers Web sites that have single-string searches with the query
 302 embedded in the URL.
 303
 304 The arguments to the `mirrors' builtin are URLs of mirror sites.
 305
 306 If the symbol of a function is given, then the function will be called with the
 307 Web site name (the one you specified in the CAR of the alist cell) as a
 308 parameter.  This might come in handy for various kludges.
 309
 310 For convenience, if the `http://', `ftp://', or `file://' prefix is missing
 311 from a URL, WebJump will make a guess at what you wanted and prepend it before
 312 submitting the URL.")
 313
 314 ;;------------------------------------------------------- Sample Site Functions
 315
 316 (defun webjump-to-iwin (name)
 317   (let ((prefix "http://iwin.nws.noaa.gov/")
 318         (state (webjump-read-choice name "state"
 319                                     (append '(("Puerto Rico" . "pr"))
 320                                             webjump-state-to-postal-alist))))
 321     (if state
 322         (concat prefix "iwin/" state "/"
 323                 (webjump-read-choice name "option"
 324                                      '(("Hourly Report" . "hourly")
 325                                        ("State Forecast" . "state")
 326                                        ("Local Forecast" . "local")
 327                                        ("Zone Forecast" . "zone")
 328                                        ("Short-Term Forecast" . "shortterm")
 329                                        ("Weather Summary" . "summary")
 330                                        ("Public Information" . "public")
 331                                        ("Climatic Data" . "climate")
 332                                        ("Aviation Products" . "aviation")
 333                                        ("Hydro Products" . "hydro")
 334                                        ("Special Weather" . "special")
 335                                        ("Watches and Warnings" . "warnings"))
 336                                      "zone")
 337                 ".html")
 338       prefix)))
 339
 340 (defun webjump-to-risks (name)
 341   (let (issue volume)
 342     (if (and (setq volume (webjump-read-number (concat name " volume")))
 343              (setq issue  (webjump-read-number (concat name " issue"))))
 344         (format "catless.ncl.ac.uk/Risks/%d.%02d.html" volume issue)
 345       "catless.ncl.ac.uk/Risks/")))
 346
 347 ;;-------------------------------------------------------------- Core Functions
 348
 349 ;;;###autoload
 350 (defun webjump ()
 351   "Jumps to a Web site from a programmable hotlist.
 352
 353 See the documentation for the `webjump-sites' variable for how to customize the
 354 hotlist.
 355
 356 Please submit bug reports and other feedback to the author, Neil W. Van Dyke
 357 <nwv@acm.org>."
 358   (interactive)
 359   (let* ((completion-ignore-case t)
 360          (item (assoc-string
 361                 (completing-read "WebJump to site: " webjump-sites nil t)
 362                 webjump-sites t))
 363          (name (car item))
 364          (expr (cdr item)))
 365     (browse-url (webjump-url-fix
 366                  (cond ((not expr) "")
 367                        ((stringp expr) expr)
 368                        ((vectorp expr) (webjump-builtin expr name))
 369                        ((listp expr) (eval expr))
 370                        ((symbolp expr)
 371                         (if (fboundp expr)
 372                             (funcall expr name)
 373                           (error "WebJump URL function \"%s\" undefined"
 374                                  expr)))
 375                        (t (error "WebJump URL expression for \"%s\" invalid"
 376                                  name)))))))
 377
 378 (defun webjump-builtin (expr name)
 379   (if (< (length expr) 1)
 380       (error "WebJump URL builtin for \"%s\" empty" name))
 381   (let ((builtin (aref expr 0)))
 382     (cond
 383      ((eq builtin 'mirrors)
 384       (if (= (length expr) 1)
 385           (error
 386            "WebJump URL builtin \"mirrors\" for \"%s\" needs at least 1 arg"
 387            name))
 388       (webjump-choose-mirror name (cdr (append expr nil))))
 389      ((eq builtin 'name)
 390       name)
 391      ((eq builtin 'simple-query)
 392       (webjump-builtin-check-args expr name 3)
 393       (webjump-do-simple-query name (aref expr 1) (aref expr 2) (aref expr 3)))
 394      (t (error "WebJump URL builtin \"%s\" for \"%s\" invalid"
 395                builtin name)))))
 396
 397 (defun webjump-builtin-check-args (expr name count)
 398   (or (= (length expr) (1+ count))
 399       (error "WebJump URL builtin \"%s\" for \"%s\" needs %d args"
 400              (aref expr 0) name count)))
 401
 402 (defun webjump-choose-mirror (name urls)
 403   (webjump-read-url-choice (concat name " mirror")
 404                            urls
 405                            (webjump-mirror-default urls)))
 406
 407 (defun webjump-do-simple-query (name noquery-url query-prefix query-suffix)
 408   (let ((query (webjump-read-string (concat name " query"))))
 409     (if query
 410         (concat query-prefix (webjump-url-encode query) query-suffix)
 411       noquery-url)))
 412
 413 (defun webjump-mirror-default (urls)
 414   ;; Note: This should be modified to apply some simple kludges/heuristics to
 415   ;; pick a site which is likely "close".  As a tie-breaker among candidates
 416   ;; judged equally desirable, randomness might be used.
 417   (car urls))
 418
 419 (defun webjump-read-choice (name what choices &optional default)
 420   (let* ((completion-ignore-case t)
 421          (choice (completing-read (concat name " " what ": ") choices nil t)))
 422     (if (webjump-null-or-blank-string-p choice)
 423         default
 424       (cdr (assoc choice choices)))))
 425
 426 (defun webjump-read-number (prompt)
 427   ;; Note: I should make this more robust someday.
 428   (let ((input (webjump-read-string prompt)))
 429     (if input (string-to-number input))))
 430
 431 (defun webjump-read-string (prompt)
 432   (let ((input (read-string (concat prompt ": "))))
 433     (if (webjump-null-or-blank-string-p input) nil input)))
 434
 435 (defun webjump-read-url-choice (what urls &optional default)
 436   ;; Note: Convert this to use `webjump-read-choice' someday.
 437   (let* ((completions (mapcar (function (lambda (n) (cons n n)))
 438                               urls))
 439          (input (completing-read (concat what
 440                                          ;;(if default " (RET for default)" "")
 441                                          ": ")
 442                                  completions
 443                                  nil
 444                                  t)))
 445     (if (webjump-null-or-blank-string-p input)
 446         default
 447       (car (assoc input completions)))))
 448
 449 (defun webjump-null-or-blank-string-p (str)
 450   (or (null str) (string-match "^[ \t]*$" str)))
 451
 452 (defun webjump-url-encode (str)
 453   (mapconcat (lambda (c)
 454                (let ((s (char-to-string c)))
 455                  (cond ((string= s " ") "+")
 456                        ((string-match "[a-zA-Z_.-/]" s) s)
 457                        (t (upcase (format "%%%02x" c))))))
 458              (encode-coding-string str 'utf-8)
 459              ""))
 460
 461 (defun webjump-url-fix (url)
 462   (if (webjump-null-or-blank-string-p url)
 463       ""
 464     (webjump-url-fix-trailing-slash
 465      (cond
 466       ((string-match "^[a-zA-Z]+:" url) url)
 467       ((string-match "^/" url) (concat "file://" url))
 468       ((string-match "^\\([^\\./]+\\)" url)
 469        (concat (if (string= (downcase (match-string 1 url)) "ftp")
 470                    "ftp"
 471                  "http")
 472                "://"
 473                url))
 474       (t url)))))
 475
 476 (defun webjump-url-fix-trailing-slash (url)
 477   (if (string-match "^[a-zA-Z]+://[^/]+$" url)
 478       (concat url "/")
 479     url))
 480
 481 ;;-----------------------------------------------------------------------------
 482
 483 (provide 'webjump)
 484
 485 ;;; webjump.el ends here