2016-04-21 21:27:19 +00:00
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;;; helm-net.el --- helm browse url and search web. -*- lexical-binding: t -*-
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;; Copyright (C) 2012 ~ 2016 Thierry Volpiatto <thierry.volpiatto@gmail.com>
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;; This program is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; This program is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with this program. If not, see <http://www.gnu.org/licenses/>.
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;;; Code:
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(require 'cl-lib)
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(require 'helm)
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(require 'helm-help)
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(require 'url)
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(require 'xml)
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(require 'browse-url)
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(defgroup helm-net nil
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"Net related applications and libraries for Helm."
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:group 'helm)
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(defcustom helm-google-suggest-default-browser-function nil
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"The browse url function you prefer to use with google suggest.
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When nil, use the first browser function available
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See `helm-browse-url-default-browser-alist'."
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:group 'helm-net
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:type 'symbol)
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(defcustom helm-home-url "http://www.google.fr"
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"Default url to use as home url."
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:group 'helm-net
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:type 'string)
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(defcustom helm-surfraw-default-browser-function nil
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"The browse url function you prefer to use with surfraw.
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When nil, fallback to `browse-url-browser-function'."
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:group 'helm-net
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:type 'symbol)
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(defcustom helm-google-suggest-url
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"http://google.com/complete/search?output=toolbar&q="
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"URL used for looking up Google suggestions."
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:type 'string
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:group 'helm-net)
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(defcustom helm-google-suggest-search-url
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"http://www.google.com/search?ie=utf-8&oe=utf-8&q=%s"
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"URL used for Google searching."
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:type 'string
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:group 'helm-net)
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(defcustom helm-net-prefer-curl nil
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"When non--nil use CURL external program to fetch data.
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Otherwise `url-retrieve-synchronously' is used."
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:type 'boolean
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:group 'helm-net)
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(defvaralias 'helm-google-suggest-use-curl-p 'helm-net-prefer-curl)
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(make-obsolete-variable 'helm-google-suggest-use-curl-p 'helm-net-prefer-curl "1.7.7")
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(defcustom helm-surfraw-duckduckgo-url
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"https://duckduckgo.com/lite/?q=%s&kp=1"
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"The duckduckgo url.
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This is a format string, don't forget the `%s'.
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If you have personal settings saved on duckduckgo you should have
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a personal url, see your settings on duckduckgo."
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:type 'string
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:group 'helm-net)
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(defcustom helm-wikipedia-suggest-url
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"https://en.wikipedia.org/w/api.php?action=opensearch&search="
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"Url used for looking up Wikipedia suggestions."
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:type 'string
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:group 'helm-net)
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(defcustom helm-search-suggest-action-wikipedia-url
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"https://en.wikipedia.org/wiki/Special:Search?search=%s"
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"The Wikipedia search url.
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This is a format string, don't forget the `%s'."
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:type 'string
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:group 'helm-net)
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(defcustom helm-wikipedia-summary-url
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"http://en.wikipedia.org/w/api.php?action=parse&format=json&prop=text§ion=0&page="
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"URL for getting the summary of a Wikipedia topic."
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:type 'string
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:group 'helm-net)
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(defcustom helm-search-suggest-action-youtube-url
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"http://www.youtube.com/results?aq=f&search_query=%s"
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"The Youtube search url.
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This is a format string, don't forget the `%s'."
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:type 'string
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:group 'helm-net)
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(defcustom helm-search-suggest-action-imdb-url
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"http://www.imdb.com/find?s=all&q=%s"
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"The IMDb search url.
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This is a format string, don't forget the `%s'."
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:type 'string
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:group 'helm-net)
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(defcustom helm-search-suggest-action-google-maps-url
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"http://maps.google.com/maps?f=q&source=s_q&q=%s"
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"The Google Maps search url.
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This is a format string, don't forget the `%s'."
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:type 'string
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:group 'helm-net)
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(defcustom helm-search-suggest-action-google-news-url
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"http://www.google.com/search?safe=off&prmd=nvlifd&source=lnms&tbs=nws:1&q=%s"
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"The Google News search url.
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This is a format string, don't forget the `%s'."
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:type 'string
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:group 'helm-net)
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(defcustom helm-google-suggest-actions
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'(("Google Search" . helm-google-suggest-action)
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("Wikipedia" . (lambda (candidate)
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(helm-search-suggest-perform-additional-action
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helm-search-suggest-action-wikipedia-url
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candidate)))
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("Youtube" . (lambda (candidate)
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(helm-search-suggest-perform-additional-action
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helm-search-suggest-action-youtube-url
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candidate)))
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("IMDb" . (lambda (candidate)
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(helm-search-suggest-perform-additional-action
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helm-search-suggest-action-imdb-url
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candidate)))
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("Google Maps" . (lambda (candidate)
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(helm-search-suggest-perform-additional-action
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helm-search-suggest-action-google-maps-url
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candidate)))
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("Google News" . (lambda (candidate)
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(helm-search-suggest-perform-additional-action
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helm-search-suggest-action-google-news-url
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candidate))))
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"List of actions for google suggest sources."
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:group 'helm-net
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:type '(alist :key-type string :value-type function))
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(defcustom helm-browse-url-firefox-new-window "-new-tab"
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"Allow choosing to browse url in new window or new tab.
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Can be \"-new-tab\" (default) or \"-new-window\"."
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:group 'helm-net
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:type '(radio
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(const :tag "New tab" "-new-tab")
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(const :tag "New window" "-new-window")))
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;;; Additional actions for search suggestions
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;;
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;;
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;; Internal
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(defun helm-search-suggest-perform-additional-action (url query)
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"Perform the search via URL using QUERY as input."
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(browse-url (format url (url-hexify-string query))))
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(defun helm-net--url-retrieve-sync (request parser)
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(if helm-net-prefer-curl
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(with-temp-buffer
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(call-process "curl" nil t nil request)
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(funcall parser))
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(with-current-buffer (url-retrieve-synchronously request)
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(funcall parser))))
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;;; Google Suggestions
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;;
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;;
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(defun helm-google-suggest-parser ()
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(cl-loop
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with result-alist = (xml-get-children
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(car (xml-parse-region
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(point-min) (point-max)))
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'CompleteSuggestion)
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for i in result-alist collect
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(cdr (cl-caadr (assoc 'suggestion i)))))
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(defun helm-google-suggest-fetch (input)
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"Fetch suggestions for INPUT from XML buffer."
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(let ((request (concat helm-google-suggest-url
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(url-hexify-string input))))
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(helm-net--url-retrieve-sync
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request #'helm-google-suggest-parser)))
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(defun helm-google-suggest-set-candidates (&optional request-prefix)
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"Set candidates with result and number of google results found."
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(let ((suggestions (helm-google-suggest-fetch
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(or (and request-prefix
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(concat request-prefix
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" " helm-pattern))
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helm-pattern))))
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(if (member helm-pattern suggestions)
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suggestions
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;; if there is no suggestion exactly matching the input then
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;; prepend a Search on Google item to the list
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(append
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suggestions
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(list (cons (format "Search for '%s' on Google" helm-input)
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helm-input))))))
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(defun helm-ggs-set-number-result (num)
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(if num
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(progn
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(and (numberp num) (setq num (number-to-string num)))
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(cl-loop for i in (reverse (split-string num "" t))
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for count from 1
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append (list i) into C
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when (= count 3)
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append (list ",") into C
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and do (setq count 0)
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finally return
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(replace-regexp-in-string
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"^," "" (mapconcat 'identity (reverse C) ""))))
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"?"))
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(defun helm-google-suggest-action (candidate)
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"Default action to jump to a google suggested candidate."
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(let ((arg (format helm-google-suggest-search-url
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(url-hexify-string candidate))))
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(helm-aif helm-google-suggest-default-browser-function
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(funcall it arg)
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(helm-browse-url arg))))
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(defvar helm-google-suggest-default-function
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'helm-google-suggest-set-candidates
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"Default function to use in helm google suggest.")
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(defvar helm-source-google-suggest
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(helm-build-sync-source "Google Suggest"
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:candidates (lambda ()
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(funcall helm-google-suggest-default-function))
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:action 'helm-google-suggest-actions
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:volatile t
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:keymap helm-map
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:requires-pattern 3))
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(defun helm-google-suggest-emacs-lisp ()
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"Try to emacs lisp complete with google suggestions."
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(helm-google-suggest-set-candidates "emacs lisp"))
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;;; Wikipedia suggestions
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;;
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;;
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(declare-function json-read-from-string "json" (string))
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(defun helm-wikipedia-suggest-fetch ()
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"Fetch Wikipedia suggestions and return them as a list."
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(require 'json)
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(let ((request (concat helm-wikipedia-suggest-url
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(url-hexify-string helm-pattern))))
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(helm-net--url-retrieve-sync
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request #'helm-wikipedia--parse-buffer)))
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(defun helm-wikipedia--parse-buffer ()
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(goto-char (point-min))
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(when (re-search-forward "^\\[.+\\[\\(.*\\)\\]\\]" nil t)
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(cl-loop for i across (aref (json-read-from-string (match-string 0)) 1)
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collect i into result
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finally return (or result
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(append
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result
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(list (cons (format "Search for '%s' on wikipedia"
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helm-pattern)
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helm-pattern)))))))
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(defvar helm-wikipedia--summary-cache (make-hash-table :test 'equal))
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(defun helm-wikipedia-persistent-action (candidate)
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(unless (string= (format "Search for '%s' on wikipedia"
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helm-pattern)
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(helm-get-selection nil t))
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(message "Fetching summary from Wikipedia...")
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(let ((buf (get-buffer-create "*helm wikipedia summary*"))
|
|
|
|
|
|
result mess)
|
|
|
|
|
|
(while (progn
|
|
|
|
|
|
(setq result (or (gethash candidate helm-wikipedia--summary-cache)
|
|
|
|
|
|
(puthash candidate
|
|
|
|
|
|
(prog1
|
|
|
|
|
|
(helm-wikipedia-fetch-summary candidate)
|
|
|
|
|
|
(setq mess "Done"))
|
|
|
|
|
|
helm-wikipedia--summary-cache)))
|
|
|
|
|
|
(when (and result
|
|
|
|
|
|
(listp result))
|
|
|
|
|
|
(setq candidate (cdr result))
|
|
|
|
|
|
(message "Redirected to %s" candidate)
|
|
|
|
|
|
t)))
|
|
|
|
|
|
(if (not result)
|
|
|
|
|
|
(message "Error when getting summary.")
|
|
|
|
|
|
(with-current-buffer buf
|
|
|
|
|
|
(erase-buffer)
|
|
|
|
|
|
(setq cursor-type nil)
|
|
|
|
|
|
(insert result)
|
|
|
|
|
|
(fill-region (point-min) (point-max))
|
|
|
|
|
|
(goto-char (point-min)))
|
|
|
|
|
|
(display-buffer buf)
|
|
|
|
|
|
(message mess)))))
|
|
|
|
|
|
|
|
|
|
|
|
(defun helm-wikipedia-fetch-summary (input)
|
|
|
|
|
|
(let* ((request (concat helm-wikipedia-summary-url
|
|
|
|
|
|
(url-hexify-string input))))
|
|
|
|
|
|
(helm-net--url-retrieve-sync
|
|
|
|
|
|
request #'helm-wikipedia--parse-summary)))
|
|
|
|
|
|
|
|
|
|
|
|
(defun helm-wikipedia--parse-summary ()
|
|
|
|
|
|
(goto-char (point-min))
|
|
|
|
|
|
(when (search-forward "{" nil t)
|
|
|
|
|
|
(let ((result (cdr (assoc '*
|
|
|
|
|
|
(assoc 'text
|
|
|
|
|
|
(assoc 'parse
|
|
|
|
|
|
(json-read-from-string
|
|
|
|
|
|
(buffer-substring-no-properties
|
|
|
|
|
|
(1- (point)) (point-max)))))))))
|
|
|
|
|
|
(when result
|
|
|
|
|
|
(if (string-match "<span class=\"redirectText\"><a href=[^>]+>\\([^<]+\\)" result)
|
|
|
|
|
|
(cons 'redirect (match-string 1 result))
|
|
|
|
|
|
|
|
|
|
|
|
;; find the beginning of the summary text in the result
|
|
|
|
|
|
|
|
|
|
|
|
;; check if there is a table before the summary and skip that
|
|
|
|
|
|
(when (or (string-match "</table>\\(\n<div.*?</div>\\)?\n<p>" result)
|
|
|
|
|
|
;; otherwise just find the first paragraph
|
|
|
|
|
|
(string-match "<p>" result))
|
|
|
|
|
|
;; remove cruft and do a simple formatting
|
|
|
|
|
|
(replace-regexp-in-string
|
|
|
|
|
|
"Cite error: .*" ""
|
|
|
|
|
|
(replace-regexp-in-string
|
|
|
|
|
|
" " ""
|
|
|
|
|
|
(replace-regexp-in-string
|
|
|
|
|
|
"\\[[^\]]+\\]" ""
|
|
|
|
|
|
(replace-regexp-in-string
|
|
|
|
|
|
"<[^>]*>" ""
|
|
|
|
|
|
(replace-regexp-in-string
|
|
|
|
|
|
"</p>\n<p>" "\n\n"
|
|
|
|
|
|
(substring result (match-end 0)))))))))))))
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
(defvar helm-source-wikipedia-suggest
|
|
|
|
|
|
(helm-build-sync-source "Wikipedia Suggest"
|
|
|
|
|
|
:candidates #'helm-wikipedia-suggest-fetch
|
|
|
|
|
|
:action '(("Wikipedia" . (lambda (candidate)
|
|
|
|
|
|
(helm-search-suggest-perform-additional-action
|
|
|
|
|
|
helm-search-suggest-action-wikipedia-url
|
|
|
|
|
|
candidate))))
|
|
|
|
|
|
:persistent-action #'helm-wikipedia-persistent-action
|
2016-09-15 09:18:17 +00:00
|
|
|
|
:persistent-help "show summary"
|
2016-04-21 21:27:19 +00:00
|
|
|
|
:volatile t
|
|
|
|
|
|
:keymap helm-map
|
|
|
|
|
|
:requires-pattern 3))
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
;;; Web browser functions.
|
|
|
|
|
|
;;
|
|
|
|
|
|
;;
|
|
|
|
|
|
;; If default setting of `w3m-command' is not
|
|
|
|
|
|
;; what you want and you modify it, you will have to reeval
|
|
|
|
|
|
;; also `helm-browse-url-default-browser-alist'.
|
|
|
|
|
|
|
|
|
|
|
|
(defvar helm-browse-url-chromium-program "chromium-browser")
|
|
|
|
|
|
(defvar helm-browse-url-uzbl-program "uzbl-browser")
|
|
|
|
|
|
(defvar helm-browse-url-conkeror-program "conkeror")
|
|
|
|
|
|
(defvar helm-browse-url-default-browser-alist
|
|
|
|
|
|
`((,(or (and (boundp 'w3m-command) w3m-command)
|
|
|
|
|
|
"/usr/bin/w3m") . w3m-browse-url)
|
|
|
|
|
|
(,browse-url-firefox-program . browse-url-firefox)
|
|
|
|
|
|
(,helm-browse-url-chromium-program . helm-browse-url-chromium)
|
|
|
|
|
|
(,helm-browse-url-conkeror-program . helm-browse-url-conkeror)
|
|
|
|
|
|
(,helm-browse-url-uzbl-program . helm-browse-url-uzbl)
|
|
|
|
|
|
(,browse-url-kde-program . browse-url-kde)
|
|
|
|
|
|
(,browse-url-gnome-moz-program . browse-url-gnome-moz)
|
|
|
|
|
|
(,browse-url-mozilla-program . browse-url-mozilla)
|
|
|
|
|
|
(,browse-url-galeon-program . browse-url-galeon)
|
|
|
|
|
|
(,browse-url-netscape-program . browse-url-netscape)
|
|
|
|
|
|
(,browse-url-mosaic-program . browse-url-mosaic)
|
|
|
|
|
|
(,browse-url-xterm-program . browse-url-text-xterm)
|
|
|
|
|
|
("emacs" . eww-browse-url))
|
|
|
|
|
|
"*Alist of \(executable . function\) to try to find a suitable url browser.")
|
|
|
|
|
|
|
|
|
|
|
|
(cl-defun helm-generic-browser (url cmd-name &rest args)
|
|
|
|
|
|
"Browse URL with NAME browser."
|
|
|
|
|
|
(let ((proc (concat cmd-name " " url)))
|
|
|
|
|
|
(message "Starting %s..." cmd-name)
|
|
|
|
|
|
(apply 'start-process proc nil cmd-name
|
|
|
|
|
|
(append args (list url)))
|
|
|
|
|
|
(set-process-sentinel
|
|
|
|
|
|
(get-process proc)
|
|
|
|
|
|
(lambda (process event)
|
|
|
|
|
|
(when (string= event "finished\n")
|
|
|
|
|
|
(message "%s process %s" process event))))))
|
|
|
|
|
|
|
|
|
|
|
|
(defun helm-browse-url-firefox (url &optional _ignore)
|
|
|
|
|
|
"Same as `browse-url-firefox' but detach from emacs.
|
|
|
|
|
|
So when you quit emacs you can keep your firefox open
|
|
|
|
|
|
and not be prompted to kill firefox process.
|
|
|
|
|
|
|
|
|
|
|
|
NOTE: Probably not supported on some systems (e.g Windows)."
|
|
|
|
|
|
(interactive (list (read-string "URL: " (browse-url-url-at-point))
|
|
|
|
|
|
nil))
|
2016-07-12 13:08:56 +00:00
|
|
|
|
(setq url (browse-url-encode-url url))
|
2016-04-21 21:27:19 +00:00
|
|
|
|
(let ((process-environment (browse-url-process-environment)))
|
|
|
|
|
|
(call-process-shell-command
|
|
|
|
|
|
(format "(%s %s %s &)"
|
|
|
|
|
|
browse-url-firefox-program
|
|
|
|
|
|
helm-browse-url-firefox-new-window
|
2016-07-12 13:08:56 +00:00
|
|
|
|
(shell-quote-argument url)))))
|
2016-04-21 21:27:19 +00:00
|
|
|
|
|
|
|
|
|
|
(defun helm-browse-url-chromium (url &optional _ignore)
|
|
|
|
|
|
"Browse URL with google chrome browser."
|
|
|
|
|
|
(interactive "sURL: ")
|
|
|
|
|
|
(helm-generic-browser
|
|
|
|
|
|
url helm-browse-url-chromium-program))
|
|
|
|
|
|
|
|
|
|
|
|
(defun helm-browse-url-uzbl (url &optional _ignore)
|
|
|
|
|
|
"Browse URL with uzbl browser."
|
|
|
|
|
|
(interactive "sURL: ")
|
|
|
|
|
|
(helm-generic-browser url helm-browse-url-uzbl-program "-u"))
|
|
|
|
|
|
|
|
|
|
|
|
(defun helm-browse-url-conkeror (url &optional _ignore)
|
|
|
|
|
|
"Browse URL with conkeror browser."
|
|
|
|
|
|
(interactive "sURL: ")
|
|
|
|
|
|
(helm-generic-browser url helm-browse-url-conkeror-program))
|
|
|
|
|
|
|
|
|
|
|
|
(defun helm-browse-url-default-browser (url &rest args)
|
|
|
|
|
|
"Find the first available browser and ask it to load URL."
|
|
|
|
|
|
(let ((default-browser-fn
|
|
|
|
|
|
(cl-loop for (exe . fn) in helm-browse-url-default-browser-alist
|
|
|
|
|
|
thereis (and exe (executable-find exe) (fboundp fn) fn))))
|
|
|
|
|
|
(if default-browser-fn
|
|
|
|
|
|
(apply default-browser-fn url args)
|
|
|
|
|
|
(error "No usable browser found"))))
|
|
|
|
|
|
|
|
|
|
|
|
(defun helm-browse-url (url &rest args)
|
|
|
|
|
|
"Default command to browse URL."
|
|
|
|
|
|
(if browse-url-browser-function
|
|
|
|
|
|
(browse-url url args)
|
|
|
|
|
|
(helm-browse-url-default-browser url args)))
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
;;; Surfraw
|
|
|
|
|
|
;;
|
|
|
|
|
|
;; Need external program surfraw.
|
|
|
|
|
|
;; <http://surfraw.alioth.debian.org/>
|
|
|
|
|
|
|
|
|
|
|
|
;; Internal
|
|
|
|
|
|
(defvar helm-surfraw-engines-history nil)
|
|
|
|
|
|
(defvar helm-surfraw-input-history nil)
|
|
|
|
|
|
(defvar helm-surfraw--elvi-cache nil)
|
|
|
|
|
|
|
|
|
|
|
|
(defun helm-build-elvi-list ()
|
|
|
|
|
|
"Return list of all engines and descriptions handled by surfraw."
|
|
|
|
|
|
(or helm-surfraw--elvi-cache
|
|
|
|
|
|
(setq helm-surfraw--elvi-cache
|
|
|
|
|
|
(cdr (with-temp-buffer
|
|
|
|
|
|
(call-process "surfraw" nil t nil "-elvi")
|
|
|
|
|
|
(split-string (buffer-string) "\n"))))))
|
|
|
|
|
|
|
|
|
|
|
|
;;;###autoload
|
|
|
|
|
|
(defun helm-surfraw (pattern engine)
|
|
|
|
|
|
"Preconfigured `helm' to search PATTERN with search ENGINE."
|
|
|
|
|
|
(interactive (list (read-string "SearchFor: "
|
|
|
|
|
|
nil 'helm-surfraw-input-history
|
|
|
|
|
|
(thing-at-point 'symbol))
|
|
|
|
|
|
(helm-comp-read
|
|
|
|
|
|
"Engine: "
|
|
|
|
|
|
(helm-build-elvi-list)
|
|
|
|
|
|
:must-match t
|
|
|
|
|
|
:name "Surfraw Search Engines"
|
|
|
|
|
|
:del-input nil
|
|
|
|
|
|
:history helm-surfraw-engines-history)))
|
|
|
|
|
|
(let* ((engine-nodesc (car (split-string engine)))
|
|
|
|
|
|
(url (if (string= engine-nodesc "duckduckgo")
|
|
|
|
|
|
;; "sr duckduckgo -p foo" is broken, workaround.
|
|
|
|
|
|
(format helm-surfraw-duckduckgo-url
|
|
|
|
|
|
(url-hexify-string pattern))
|
|
|
|
|
|
(with-temp-buffer
|
|
|
|
|
|
(apply 'call-process "surfraw" nil t nil
|
|
|
|
|
|
(append (list engine-nodesc "-p") (split-string pattern)))
|
|
|
|
|
|
(replace-regexp-in-string
|
|
|
|
|
|
"\n" "" (buffer-string)))))
|
|
|
|
|
|
(browse-url-browser-function (or helm-surfraw-default-browser-function
|
|
|
|
|
|
browse-url-browser-function)))
|
|
|
|
|
|
(if (string= engine-nodesc "W")
|
|
|
|
|
|
(helm-browse-url helm-home-url)
|
|
|
|
|
|
(helm-browse-url url)
|
|
|
|
|
|
(setq helm-surfraw-engines-history
|
|
|
|
|
|
(cons engine (delete engine helm-surfraw-engines-history))))))
|
|
|
|
|
|
|
|
|
|
|
|
;;;###autoload
|
|
|
|
|
|
(defun helm-google-suggest ()
|
|
|
|
|
|
"Preconfigured `helm' for google search with google suggest."
|
|
|
|
|
|
(interactive)
|
|
|
|
|
|
(helm-other-buffer 'helm-source-google-suggest "*helm google*"))
|
|
|
|
|
|
|
|
|
|
|
|
;;;###autoload
|
|
|
|
|
|
(defun helm-wikipedia-suggest ()
|
|
|
|
|
|
"Preconfigured `helm' for Wikipedia lookup with Wikipedia suggest."
|
|
|
|
|
|
(interactive)
|
|
|
|
|
|
(helm :sources 'helm-source-wikipedia-suggest
|
|
|
|
|
|
:buffer "*helm wikipedia*"))
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
(provide 'helm-net)
|
|
|
|
|
|
|
|
|
|
|
|
;; Local Variables:
|
|
|
|
|
|
;; byte-compile-warnings: (not cl-functions obsolete)
|
|
|
|
|
|
;; coding: utf-8
|
|
|
|
|
|
;; indent-tabs-mode: nil
|
|
|
|
|
|
;; End:
|
|
|
|
|
|
|
|
|
|
|
|
;;; helm-net.el ends here
|
