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w3m-search.el
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w3m-search.el
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;;; w3m-search.el --- functions convenient to access web search engines -*- lexical-binding: nil -*-
;; Copyright (C) 2001--2012, 2017-2020, 2022
;; TSUCHIYA Masatoshi <[email protected]>
;; Authors: Keisuke Nishida <[email protected]>,
;; Shun-ichi GOTO <[email protected]>,
;; TSUCHIYA Masatoshi <[email protected]>,
;; Romain FRANCOISE <[email protected]>
;; Keywords: w3m, WWW, hypermedia
;; This file is a part of emacs-w3m.
;; This program 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.
;; This program 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 this program; see the file COPYING. If not, write to
;; the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
;; Boston, MA 02110-1301, USA.
;;; Commentary:
;; This module contains the `w3m-search' command and some utilities
;; to improve your cyberlife. For more detail about emacs-w3m, see:
;;
;; http://emacs-w3m.namazu.org/
;;; Code:
(require 'w3m)
(defcustom w3m-search-engine-alist
(let ((ja nil));(equal "Japanese" w3m-language)))
`(,@(if ja
'(("yahoo"
"https://search.yahoo.co.jp/bin/search?p=%s"
euc-japan)
("yahoo-en"
"https://search.yahoo.com/bin/search?p=%s"))
'(("yahoo"
"https://search.yahoo.com/bin/search?p=%s")
("yahoo-ja"
"https://search.yahoo.co.jp/bin/search?p=%s"
euc-japan)))
("alc" "https://eow.alc.co.jp/%s/UTF-8/" utf-8)
,@(if ja
'(("blog"
"https://blogsearch.google.com/blogsearch?q=%s&hl=ja&lr=lang_ja&oe=utf-8&ie=utf-8"
utf-8)
("blog-en"
"https://blogsearch.google.com/blogsearch?q=%s&hl=en&oe=utf-8&ie=utf-8"
utf-8))
'(("blog"
"https://blogsearch.google.com/blogsearch?q=%s&oe=utf-8&ie=utf-8"
utf-8)
("blog-en"
"https://blogsearch.google.com/blogsearch?q=%s&hl=en&oe=utf-8&ie=utf-8"
utf-8)))
,@(if ja
'(("google"
"https://www.google.com/search?q=%s&hl=ja&lr=lang_ja&ie=utf-8&oe=utf-8&gbv=1"
utf-8)
("google-en"
"https://www.google.com/search?q=%s&hl=en&ie=utf-8&oe=utf-8&gbv=1"
utf-8))
'(("google"
"https://www.google.com/search?q=%s&ie=utf-8&oe=utf-8&gbv=1"
utf-8)
("google-en"
"https://www.google.com/search?q=%s&hl=en&ie=utf-8&oe=utf-8&gbv=1"
utf-8)))
,@(if ja
'(("google news"
"https://news.google.co.jp/news?q=%s&hl=ja&ie=utf-8&oe=utf-8"
utf-8)
("google news-en"
"https://news.google.com/news?q=%s&hl=en"))
'(("google news"
"https://news.google.com/news?q=%s&ie=utf-8&oe=utf-8"
utf-8)
("google news-en"
"https://news.google.com/news?q=%s&hl=en&ie=utf-8&oe=utf-8")))
,@(if ja
'(("technorati"
"https://www.technorati.jp/search/search.html?query=%s&language=ja"
utf-8)
("technorati-en"
"https://www.technorati.com/search/%s"
utf-8))
'(("technorati"
"https://www.technorati.com/search/%s"
utf-8)
("technorati-ja"
"https://www.technorati.jp/search/search.html?query=%s&language=ja"
utf-8)))
("technorati-tag"
"https://www.technorati.com/tag/%s"
utf-8)
("goo-ja"
"https://search.goo.ne.jp/web.jsp?MT=%s"
euc-japan)
("excite-ja"
"https://www.excite.co.jp/search.gw?target=combined&look=excite_jp\
&lang=jp&tsug=-1&csug=-1&search=%s"
shift_jis)
("altavista"
"https://altavista.com/sites/search/web?q=\"%s\"&kl=ja&search=Search")
("rpmfind"
"https://rpmfind.net/linux/rpm2html/search.php?query=%s"
nil)
("debian-pkg"
"https://packages.debian.org/search\
?&searchon=names&suite=stable§ion=all&arch=amd64&keywords=%s")
("debian-bts"
"https://bugs.debian.org/cgi-bin/pkgreport.cgi?archive=yes&pkg=%s")
("freebsd-users-jp"
"https://home.jp.FreeBSD.org/cgi-bin/namazu.cgi?key=\"%s\"&whence=0\
&max=50&format=long&sort=score&dbname=FreeBSD-users-jp"
euc-japan)
("iij-archie"
"https://www.iij.ad.jp/cgi-bin/archieplexform?query=%s\
&type=Case+Insensitive+Substring+Match&order=host&server=archie1.iij.ad.jp\
&hits=95&nice=Nice")
("waei"
"https://dictionary.goo.ne.jp/search.php?MT=%s&kind=je"
euc-japan)
("eiwa"
"https://dictionary.goo.ne.jp/search.php?MT=%s&kind=ej")
("kokugo"
"https://dictionary.goo.ne.jp/search.php?MT=%s&kind=jn"
euc-japan)
("eiei"
"https://www.dictionary.com/cgi-bin/dict.pl?term=%s&r=67")
,@(if ja
'(("amazon"
"https://www.amazon.co.jp/gp/search?\
__mk_ja_JP=%%83J%%83%%5E%%83J%%83i&url=search-alias%%3Daps&field-keywords=%s"
shift_jis)
("amazon-en"
"https://www.amazon.com/exec/obidos/search-handle-form/\
250-7496892-7797857"
iso-8859-1
"url=index=blended&field-keywords=%s"))
'(("amazon"
"https://www.amazon.com/exec/obidos/search-handle-form/\
250-7496892-7797857"
iso-8859-1
"url=index=blended&field-keywords=%s")
("amazon-ja"
"https://www.amazon.co.jp/gp/search?\
__mk_ja_JP=%%83J%%83%%5E%%83J%%83i&url=search-alias%%3Daps&field-keywords=%s"
shift_jis)))
("emacswiki" "https://www.emacswiki.org/cgi-bin/wiki?search=%s")
("en.wikipedia"
"https://en.wikipedia.org/w/index.php?title=Special:Search&search=%s")
("de.wikipedia"
"https://de.wikipedia.org/w/index.php?title=Spezial:Suche&search=%s"
utf-8)
("ja.wikipedia"
"https://ja.wikipedia.org/w/index.php?title=Special:Search&search=%s"
utf-8)
("msdn" "https://search.msdn.microsoft.com/search/default.aspx?query=%s")
("duckduckgo" "https://lite.duckduckgo.com/lite" utf-8 "q=%s")))
"An alist of search engines.
Each element looks like (ENGINE ACTION CODING POST-DATA)
ENGINE is a string, the name of the search engine.
ACTION is a string, the URL that performs a search.
ACTION must contain a \"%s\", which is substituted by a query string.
CODING is optional value which is coding system for query string.
POST-DATA is optional value which is a string for POST method search engine.
If CODING is omitted, it defaults to `w3m-default-coding-system'."
:group 'w3m
:type `(repeat
(group :format "%v" :indent 2
(string :format "Engine: %v")
(string :format "Action: %v")
(coding-system :format "%t: %v")
(checklist :inline t
(string :format "PostData: %v")))))
(defcustom w3m-search-default-engine "google"
"Name of the default search engine.
See also `w3m-search-engine-alist'."
:group 'w3m
:type '(radio
:convert-widget w3m-widget-type-convert-widget
`(,@(mapcar (lambda (x)
(list 'const (substring-no-properties (car x))))
w3m-search-engine-alist))))
(defcustom w3m-search-word-at-point t
"Non-nil means that the word at point is used as an initial string.
If Transient Mark mode, this option is ignored and the region is used
as an initial string."
:group 'w3m
:type 'boolean)
(defvar w3m-search-engine-history nil
"History variable used by `w3m-search' for prompting a search engine.")
(defvar w3m-search-thing-at-point-arg 'word
"Argument for `thing-at-point' used in `w3m-search-read-query'")
(defun w3m-search-escape-query-string (str &optional coding)
(mapconcat (lambda (s) (w3m-url-encode-string s coding))
(split-string str)
"+"))
(defun w3m-search-read-query (prompt prompt-with-default &optional history)
"Read a query from the minibuffer, prompting with string PROMPT.
When a default value for the query is discovered, prompt with string
PROMPT-WITH-DEFAULT instead of string PROMPT."
(let ((default
(if (region-active-p)
(buffer-substring (region-beginning) (region-end))
(unless (and (eq major-mode 'w3m-mode)
(listp (get-text-property (line-beginning-position)
'face))
(memq 'w3m-header-line-title
(get-text-property (line-beginning-position)
'face)))
(thing-at-point w3m-search-thing-at-point-arg))))
initial)
(when default
(set-text-properties 0 (length default) nil default)
(when (or w3m-search-word-at-point (region-active-p))
(setq initial default
default nil))
(when (region-active-p)
(deactivate-mark)))
(read-string (if default
(format prompt-with-default default)
prompt)
initial history default)))
(defun w3m-search-read-variables (where)
"Ask for a search engine and words to query and return them as a list.
WHERE is a string which should have the value \"current\" is the calling
function intends for the search results to be presented in the current
buffer, or \"new\" if in a new buffer."
(w3m--buffer-busy-error)
(let* ((prompt-prefix (format "Search in %s buffer. " where))
(search-engine
(if current-prefix-arg
(let ((default (or (car w3m-search-engine-history)
w3m-search-default-engine))
(completion-ignore-case t))
(completing-read (format "%sWhich engine? (default %s): "
prompt-prefix default)
w3m-search-engine-alist nil t nil
'w3m-search-engine-history default))
w3m-search-default-engine))
(query
(w3m-search-read-query
(format "%s %s search: " prompt-prefix search-engine)
(format "%s search (default %%s): " search-engine))))
(list search-engine query)))
(defun w3m-search-do-search (w3m-goto-function search-engine query)
"Call W3M-GOTO-FUNCTION with the URL for the search."
(unless (string= query "")
(let ((info (assoc search-engine w3m-search-engine-alist)))
(if info
(let ((query-string (w3m-search-escape-query-string query
(caddr info)))
(post-data (cadddr info)))
(w3m-history-store-position)
(funcall w3m-goto-function
(format (cadr info) query-string)
post-data
nil
(and post-data (format post-data query-string))))
(error "Unknown search engine: %s" search-engine)))))
;;;###autoload
(defun w3m-search (search-engine query)
"Search QUERY using SEARCH-ENGINE.
Search results will appear in the current buffer.
When called interactively with a prefix argument, you can choose one of
the search engines defined in `w3m-search-engine-alist'. Otherwise use
`w3m-search-default-engine'.
If Transient Mark mode, use the region as an initial string of query
and deactivate the mark."
(interactive (w3m-search-read-variables "current"))
(w3m-search-do-search 'w3m-goto-url search-engine query))
;;;###autoload
(defun w3m-search-new-session (search-engine query)
"Like `w3m-search', but do the search in a new buffer."
(interactive (w3m-search-read-variables "new"))
(w3m-search-do-search 'w3m-goto-url-new-session search-engine query))
;;;###autoload
(defun w3m-search-uri-replace (uri engine)
"Generate query string for ENGINE from URI matched by last search."
(let ((query (substring uri (match-end 0)))
(info (assoc engine w3m-search-engine-alist)))
(when info
(format (cadr info)
(w3m-search-escape-query-string query (caddr info))))))
(provide 'w3m-search)
;;; w3m-search.el ends here