2022-04-25 19:53:05 +00:00
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;;; helm-net.el --- helm browse url and search web. -*- lexical-binding: t -*-
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2022-08-04 18:39:15 +00:00
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;; Copyright (C) 2012 ~ 2021 Thierry Volpiatto
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2022-04-25 19:53:05 +00:00
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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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(declare-function helm-comp-read "helm-mode")
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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 "https://www.google.com"
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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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"https://encrypted.google.com/complete/search?output=toolbar&q=%s"
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"URL used for looking up Google suggestions.
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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-search-url
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"https://encrypted.google.com/search?ie=utf-8&oe=utf-8&q=%s"
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"URL used for Google searching.
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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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(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-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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(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-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-search-suggest-action-youtube-url
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"https://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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"https://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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"https://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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2022-08-04 18:39:15 +00:00
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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), \"--new-window\" or \"--private-window\"."
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2022-04-25 19:53:05 +00:00
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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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(const :tag "New private window" "--private-window")))
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2022-04-25 19:53:05 +00:00
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(defcustom helm-net-curl-switches '("-s" "-L")
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"Arguments list passed to curl when using `helm-net-prefer-curl'."
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:group 'helm-net
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:type '(repeat string))
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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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(defvar helm-net-curl-log-file (expand-file-name "helm-curl.log" user-emacs-directory))
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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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(apply #'call-process "curl"
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nil `(t ,helm-net-curl-log-file) nil request helm-net-curl-switches)
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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 (assq '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 (format 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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:match-dynamic 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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;;; Web browser functions.
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;;
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;;
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;; If default setting of `w3m-command' is not
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;; what you want and you modify it, you will have to reeval
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;; also `helm-browse-url-default-browser-alist'.
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(defvar helm-browse-url-chromium-program "chromium-browser")
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(defvar helm-browse-url-uzbl-program "uzbl-browser")
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(defvar helm-browse-url-nyxt-program "nyxt")
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(defvar helm-browse-url-conkeror-program "conkeror")
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(defvar helm-browse-url-opera-program "opera")
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(defvar helm-browse-url-w3m-program (or (and (boundp 'w3m-command) w3m-command)
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(executable-find "w3m")))
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(defvar helm-browse-url-default-browser-alist
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'((helm-browse-url-w3m-program . w3m-browse-url)
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(browse-url-firefox-program . browse-url-firefox)
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(helm-browse-url-chromium-program . helm-browse-url-chromium)
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(helm-browse-url-conkeror-program . helm-browse-url-conkeror)
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(helm-browse-url-opera-program . helm-browse-url-opera)
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(helm-browse-url-uzbl-program . helm-browse-url-uzbl)
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(helm-browse-url-nyxt-program . helm-browse-url-nyxt)
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(browse-url-kde-program . browse-url-kde)
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(browse-url-gnome-moz-program . browse-url-gnome-moz)
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(browse-url-mozilla-program . browse-url-mozilla)
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(browse-url-galeon-program . browse-url-galeon)
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(browse-url-netscape-program . browse-url-netscape)
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(browse-url-xterm-program . browse-url-text-xterm)
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("emacs" . eww-browse-url))
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"Alist of (browse_url_variable . function) to try to find a suitable url browser.")
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(cl-defun helm-generic-browser (url cmd-name &rest args)
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"Browse URL with NAME browser."
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(let ((proc (concat cmd-name " " url)))
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(message "Starting %s..." cmd-name)
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(apply 'start-process proc nil cmd-name
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(append args (list url)))
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(set-process-sentinel
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(get-process proc)
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(lambda (process event)
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(when (string= event "finished\n")
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(message "%s process %s" process event))))))
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;;;###autoload
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(defun helm-browse-url-firefox (url &optional _ignore)
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"Same as `browse-url-firefox' but detach from Emacs.
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So when you quit Emacs you can keep your Firefox session open and
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not be prompted to kill the Firefox process.
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NOTE: Probably not supported on some systems (e.g., Windows)."
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(interactive (list (read-string "URL: " (browse-url-url-at-point))
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nil))
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(setq url (browse-url-encode-url url))
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(let ((process-environment (browse-url-process-environment)))
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(call-process-shell-command
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(format "(%s %s %s &)"
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browse-url-firefox-program
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helm-browse-url-firefox-new-window
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(shell-quote-argument url)))))
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;;;###autoload
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(defun helm-browse-url-opera (url &optional _ignore)
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"Browse URL with Opera browser and detach from Emacs.
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So when you quit Emacs you can keep your Opera session open and
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not be prompted to kill the Opera process.
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NOTE: Probably not supported on some systems (e.g., Windows)."
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(interactive (list (read-string "URL: " (browse-url-url-at-point))
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nil))
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(setq url (browse-url-encode-url url))
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(let ((process-environment (browse-url-process-environment)))
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(call-process-shell-command
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(format "(%s %s &)"
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helm-browse-url-opera-program (shell-quote-argument url)))))
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;;;###autoload
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(defun helm-browse-url-chromium (url &optional _ignore)
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"Browse URL with Google Chrome browser."
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(interactive "sURL: ")
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(helm-generic-browser
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url helm-browse-url-chromium-program))
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;;;###autoload
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(defun helm-browse-url-uzbl (url &optional _ignore)
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"Browse URL with uzbl browser."
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(interactive "sURL: ")
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(helm-generic-browser url helm-browse-url-uzbl-program "-u"))
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;;;###autoload
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(defun helm-browse-url-conkeror (url &optional _ignore)
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"Browse URL with conkeror browser."
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(interactive "sURL: ")
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(helm-generic-browser url helm-browse-url-conkeror-program))
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;;;###autoload
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(defun helm-browse-url-nyxt (url &optional _ignore)
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"Browse URL with nyxt browser."
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(interactive "sURL: ")
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(helm-generic-browser url helm-browse-url-nyxt-program))
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(defun helm-browse-url-default-browser (url &rest args)
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"Find the first available browser and ask it to load URL."
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(let ((default-browser-fn
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(cl-loop for (var . fn) in helm-browse-url-default-browser-alist
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for exe = (if (stringp var)
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var
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(and (boundp var) (symbol-value var)))
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thereis (and exe (executable-find exe) (fboundp fn) fn))))
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|
(if default-browser-fn
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(apply default-browser-fn url args)
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(error "No usable browser found"))))
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(defun helm-browse-url (url &rest args)
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|
|
"Default command to browse URL."
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|
|
(if browse-url-browser-function
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|
(browse-url url args)
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(helm-browse-url-default-browser url args)))
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;;; Surfraw
|
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;;
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|
;; Need external program surfraw.
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|
|
;; <http://surfraw.alioth.debian.org/>
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|
;; Internal
|
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|
|
(defvar helm-surfraw-engines-history nil)
|
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|
|
|
|
(defvar helm-surfraw-input-history nil)
|
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|
|
|
|
(defvar helm-surfraw--elvi-cache nil)
|
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|
|
|
|
|
|
|
|
|
|
(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
|
|
|
|
|
|
(let* ((default (if (use-region-p)
|
|
|
|
|
|
(buffer-substring-no-properties
|
|
|
|
|
|
(region-beginning) (region-end))
|
|
|
|
|
|
(thing-at-point 'symbol)))
|
|
|
|
|
|
(prompt (if default
|
|
|
|
|
|
(format "SearchFor (default %s): " default)
|
|
|
|
|
|
"SearchFor: ")))
|
|
|
|
|
|
(read-string prompt nil 'helm-surfraw-input-history default))
|
|
|
|
|
|
(helm-comp-read
|
|
|
|
|
|
"Engine: "
|
|
|
|
|
|
(helm-build-elvi-list)
|
|
|
|
|
|
:must-match t
|
|
|
|
|
|
:name "Surfraw Search Engines"
|
|
|
|
|
|
: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))))
|
|
|
|
|
|
|
|
|
|
|
|
;;;###autoload
|
|
|
|
|
|
(defun helm-google-suggest ()
|
|
|
|
|
|
"Preconfigured `helm' for Google search with Google suggest."
|
|
|
|
|
|
(interactive)
|
|
|
|
|
|
(helm-other-buffer 'helm-source-google-suggest "*helm google*"))
|
|
|
|
|
|
|
|
|
|
|
|
(provide 'helm-net)
|
|
|
|
|
|
|
|
|
|
|
|
;;; helm-net.el ends here
|
