├── Cask ├── LICENSE ├── Makefile ├── README.md ├── howdoi-pkg.el └── howdoi.el /Cask: -------------------------------------------------------------------------------- 1 | (source melpa) 2 | 3 | (depends-on "url") 4 | 5 | (package "emacs-howdoi" "0.4.2" "Coding answers via Emacs.") 6 | 7 | (development 8 | (depends-on "f") 9 | (depends-on "s") 10 | (depends-on "dash") 11 | (depends-on "el-mock") 12 | (depends-on "ert-runner") 13 | (depends-on "ecukes") 14 | (depends-on "espuds")) 15 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | {one line to give the program's name and a brief idea of what it does.} 635 | Copyright (C) {year} {name of author} 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | {project} Copyright (C) {year} {fullname} 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /Makefile: -------------------------------------------------------------------------------- 1 | VERSION = 0.4.2 2 | TARGET_DIR = howdoi-$(VERSION) 3 | 4 | marmalade: 5 | mkdir $(TARGET_DIR) 6 | cp howdoi.el $(TARGET_DIR) 7 | cp README.md $(TARGET_DIR) 8 | cp LICENSE $(TARGET_DIR) 9 | tar -cf howdoi-$(VERSION).tar $(TARGET_DIR) 10 | rm -rf $(TARGET_DIR) 11 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | Howdoi.el -- instant coding answers via Emacs. 2 | ============ 3 | 4 | Do you find yourself constantly Googling for how to do basic 5 | programing tasks? Suppose you want to know how to format a date in 6 | bash. Why open your browser and read through blogs when you can just 7 | M-x howdoi-query RET format date bash RET 8 | 9 | Howdoi.el is a way to query Stack Overflow directly from the Emacs and 10 | get back the most upvoted answer to the first question that comes up 11 | for that query. 12 | 13 | Installation 14 | ============ 15 | 16 | Copy howdoi.el file to the ~/.emacs.d/ folder and put the line 17 | 18 | (load-file "~/.emacs.d/howdoi.el") 19 | 20 | into the ~/.emacs configuration file. 21 | 22 | Usage 23 | ============ 24 | 25 | The following two commands show an answer in a pop up buffer: 26 | 27 | M-x howdoi-query RET RET ;; e.g.: M-x howdoi-query RET format date bash RET 28 | M-x howdoi-query-line-at-point ;; takes a query from a line at point and shows an answer in a pop up buffer. 29 | 30 | To get an answer containing only code snippet you could use: 31 | 32 | M-x howdoi-query-line-at-point-replace-by-code-snippet 33 | 34 | this command replaces current line with a code snippet parsed from an 35 | answer or do 36 | 37 | M-x howdoi-query-insert-code-snippet-at-point 38 | 39 | to get a code snippet for given query. The code snippet is inserted at 40 | point. 41 | 42 | With that command you could get situation when it returns not good 43 | enough code snippet. Or may be after that command you would like to 44 | get more details which relates to the original query. Then you could 45 | use the following command: 46 | 47 | M-x howdoi-show-current-question 48 | 49 | This one will show (in a pop up buffer) full answer which contains 50 | recently inserted code snippet. This command may help sometimes to 51 | avoid additional googling when original query is a little bit 52 | ambiguous. 53 | 54 | By default pop up buffer displays only answers. You could change 55 | `howdoi-display-question` custom variable to show also a question. 56 | 57 | In the mentioned pop up buffer enables HowDoI major-mode. There are 58 | such key bindings are available: 59 | 60 | * n - `howdoi-show-next-question` 61 | * p - `howdoi-show-previous-question` 62 | * b - `howdoi-browse-current-question` 63 | * u - `howdoi-query` 64 | * < - `beginning-of-buffer` 65 | * > - `end-of-buffer` 66 | * q - `quit window` 67 | 68 | There is also howdoi-minor-mode available with a list of key bindings: 69 | 70 | * C-c C-o n - `howdoi-show-next-question` 71 | * C-c C-o p - `howdoi-show-previous-question` 72 | * C-c C-o c - `howdoi-show-current-question` 73 | * C-c C-o b - `howdoi-browse-current-question` 74 | * C-c C-o u - `howdoi-query` 75 | * C-c C-o l - `howdoi-query-line-at-point` 76 | * C-c C-o r - `howdoi-query-line-at-point-replace-by-code-snippet` 77 | 78 | 79 | Example 80 | ============ 81 | 82 | For example there is the line in the *scratch* buffer: 83 | 84 | python file exists 85 | 86 | point is located somewhere on this line. 87 | 88 | After `M-x howdoi-query-line-at-point-replace-by-code-snippet` this 89 | line will be replaced by something like the following: 90 | 91 | try: 92 | with open('filename'): 93 | process() 94 | except IOError: 95 | print 'Oh dear.' 96 | 97 | Other example: there is the line in the *scratch* buffer: 98 | 99 | elisp split string 100 | 101 | After `M-x howdoi-query-line-at-point-replace-by-code-snippet` this 102 | line will be replaced by: 103 | 104 | (split-string "1.2.3" "\\.") 105 | 106 | You may be wondered: why "." is escaped with two '\'? You could 107 | execute then `M-x howdoi-show-current-question` and the full answer 108 | will be shown so you'll be able to get an explanation. 109 | 110 | And last example: just execute `M-x howdoi-query RET howdoi RET` and 111 | it will return an answer in a pop up buffer. 112 | 113 | In a pop up buffer you could press "n" to view next question, "p" to 114 | view previous question and "b" to browse question in a www browser. 115 | 116 | Author 117 | ============ 118 | 119 | Andrey Tykhonov (atykhonov at gmail.com; @atykhonov) 120 | 121 | Notes 122 | ============ 123 | 124 | Please contribute if you like too! :) Otherwise write down your suggestions, comments, feature requests etc etc etc. 125 | 126 | Thank you! And Enjoy! 127 | 128 | Contributors 129 | ============ 130 | - [Graydon Hoare](https://github.com/graydon) 131 | - [Łukasz Jędrzejewski](https://github.com/jedrz) 132 | -------------------------------------------------------------------------------- /howdoi-pkg.el: -------------------------------------------------------------------------------- 1 | (define-package "howdoi" "0.4.2" 2 | "Instant coding answers via Emacs.") 3 | -------------------------------------------------------------------------------- /howdoi.el: -------------------------------------------------------------------------------- 1 | ;;; howdoi.el --- instant coding answers via Emacs. 2 | 3 | ;; Copyright (C) 2014 Andrey Tykhonov 4 | ;; Free Software Foundation, Inc. 5 | 6 | ;; Author: Andrey Tykhonov 7 | ;; Maintainer: Andrey Tykhonov 8 | ;; URL: https://github.com/atykhonov/emacs-howdoi/ 9 | ;; Version: 0.4.3 10 | ;; Keywords: howdoi, convenience 11 | 12 | ;; Contributors: 13 | ;; Graydon Hoare (https://github.com/graydon) 14 | ;; Łukasz Jędrzejewski (https://github.com/jedrz) 15 | 16 | ;; This file is NOT part of GNU Emacs. 17 | 18 | ;; howdoi.el is free software: you can redistribute it and/or modify 19 | ;; it under the terms of the GNU General Public License as published 20 | ;; by the Free Software Foundation, either version 3 of the License, 21 | ;; or (at your option) any later version. 22 | 23 | ;; howdoi.el is distributed in the hope that it will be useful, but 24 | ;; WITHOUT ANY WARRANTY; without even the implied warranty of 25 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 26 | ;; General Public License for more details. 27 | 28 | ;; You should have received a copy of the GNU General Public License 29 | ;; along with howdoi.el. 30 | ;; If not, see . 31 | 32 | ;;; Commentary: 33 | 34 | ;; Do you find yourself constantly Googling for how to do basic 35 | ;; programing tasks? Suppose you want to know how to format a date in 36 | ;; bash. Why open your browser and read through blogs when you can 37 | ;; just M-x howdoi-query RET format date bash 38 | ;; 39 | ;; This package was inspired by Tom (adatgyujto at gmail.com). It was 40 | ;; his idea to make a port of command line tool such as python's 41 | ;; `howdoi`: https://github.com/gleitz/howdoi 42 | ;; 43 | ;; Thank you, Tom! 44 | ;; 45 | ;; Commands: 46 | ;; 47 | ;; The following two commands show an answer in a pop up buffer: 48 | ;; M-x howdoi-query RET 49 | ;; M-x howdoi-query-line-at-point ;; takes a query from a line at point 50 | ;; 51 | ;; To get an answer containing only code snippet you could use: 52 | ;; M-x howdoi-query-line-at-point-replace-by-code-snippet 53 | ;; this command replaces current line with a code snippet 54 | ;; parsed from an answer. 55 | ;; 56 | ;; In case of last command you could get situation when it returns not 57 | ;; good enough code snippet. Or may be after that command you would 58 | ;; like to get more details which relates to the original query. Then 59 | ;; you could use the following command: 60 | ;; 61 | ;; M-x howdoi-show-current-question 62 | ;; 63 | ;; This one will show (in a pop up buffer) full answer which contains 64 | ;; recently inserted code snippet. This command may help sometimes to 65 | ;; avoid additional googling when original query is a little bit 66 | ;; ambiguous. 67 | ;; 68 | ;; By default pop up buffer displays only answers. You could change 69 | ;; `howdoi-display-question` custom variable to show also a question. 70 | ;; 71 | ;; In the mentioned pop up buffer enables HowDoI major-mode. There are 72 | ;; such key bindings are available: 73 | ;; 74 | ;; n - howdoi-show-next-question 75 | ;; p - howdoi-show-previous-question 76 | ;; b - howdoi-browse-current-question 77 | ;; u - howdoi-query 78 | ;; < - beginning-of-buffer 79 | ;; > - end-of-buffer 80 | ;; q - quit window 81 | ;; 82 | ;; There is also howdoi-minor-mode available with a list of key 83 | ;; bindings: 84 | ;; 85 | ;; C-c C-o n - howdoi-show-next-question 86 | ;; C-c C-o p - howdoi-show-previous-question 87 | ;; C-c C-o c - howdoi-show-current-question 88 | ;; C-c C-o b - howdoi-browse-current-question 89 | ;; C-c C-o u - howdoi-query 90 | ;; C-c C-o l - howdoi-query-line-at-point 91 | ;; C-c C-o r - howdoi-query-line-at-point-replace-by-code-snippet 92 | ;; C-c C-o i - howdoi-query-insert-code-snippet-at-point 93 | ;; 94 | ;; 95 | 96 | ;;; Code: 97 | 98 | (defgroup howdoi nil 99 | "Instant coding answers via Emacs." 100 | :group 'extensions 101 | :group 'convenience 102 | :version "24.3" 103 | :link '(emacs-commentary-link "howdoi.el")) 104 | 105 | (defcustom howdoi-display-question nil 106 | "Whether to display the question in a pop up buffer. 107 | When non-nil, question is printed." 108 | :type 'boolean 109 | :group 'howdoi) 110 | 111 | (defvar howdoi-current-stackoverflow-url nil 112 | "Temporal variable which holds stackoverflow url for current query.") 113 | 114 | (defvar howdoi-question-urls '() 115 | "Temporal variable which holds urls parsed from Google.") 116 | 117 | (defvar howdoi-current-question-num 0 118 | "Current number of the question which is currently displayed 119 | in a pop up buffer.") 120 | 121 | (defvar howdoi-display-callback nil 122 | "Temporal variable which is used to keep display callback 123 | amongst functions.") 124 | 125 | (defvar howdoi-requests-cache (make-hash-table :test 'equal) 126 | "Keeps cached answers to avoid surplus http requests.") 127 | 128 | (defvar howdoi-original-buffer nil "Keeps a reference to the 129 | original buffer in which user might performs howdoi query") 130 | 131 | 132 | (defun trim-string (string) 133 | "Remove white spaces in beginning and ending of STRING. 134 | White space here is any of: space, tab, emacs newline (line feed, ASCII 10)." 135 | (replace-regexp-in-string "\\`[ \t\n\r]*" "" 136 | (replace-regexp-in-string "[ \t\n\r]*\\'" "" string))) 137 | 138 | ;;;###autoload 139 | (defun howdoi-query-line-at-point () 140 | "Take a line at point, make the search using that line as a 141 | query and pop up a buffer displaying the answer." 142 | (interactive) 143 | (let ((query (buffer-substring-no-properties 144 | (line-beginning-position) 145 | (line-end-position)))) 146 | (howdoi-request query 'howdoi-pop-answer-to-buffer-callback))) 147 | 148 | ;;;###autoload 149 | (defun howdoi-query-line-at-point-replace-by-code-snippet () 150 | "Take a line at the point, make the search using that line as a 151 | query and replace the line by a found code snippet." 152 | (interactive) 153 | (let* ((query (buffer-substring-no-properties 154 | (line-beginning-position) 155 | (line-end-position)))) 156 | (setq howdoi-original-buffer (current-buffer)) 157 | (howdoi-request query 158 | 'howdoi-replace-line-at-point-callback))) 159 | 160 | (defun howdoi-replace-line-at-point-callback (question answers snippets) 161 | "Callback which calls immediately after http request. It 162 | replaces a line at point by code snippet." 163 | (with-current-buffer howdoi-original-buffer 164 | (move-beginning-of-line nil) 165 | (kill-line nil) 166 | (insert (nth 0 snippets)))) 167 | 168 | (defun howdoi-format-question-and-answers (question answers) 169 | "Format output of QUESTION and ANSWERS." 170 | (let ((result (mapconcat (function (lambda (x) 171 | (trim-string x))) 172 | answers "\n\n-------\n\n"))) 173 | (when (and question howdoi-display-question) 174 | (setq result 175 | (format "%s\n\n=======\n\n%s" (trim-string question) result))) 176 | result)) 177 | 178 | (defun howdoi-pop-answer-to-buffer-callback (question answers snippets) 179 | "Callback which calls immediately after http request. Pop up a 180 | buffer named *How do I* displaying the QUESTION, ANSWERS and SNIPPETS." 181 | (howdoi-pop-answer-to-buffer question answers)) 182 | 183 | (defun howdoi-pop-answer-to-buffer (question answers) 184 | "Pop up a buffer with an answer." 185 | (let ((howdoi-buffer (get-buffer-create "*How do I*"))) 186 | (save-selected-window 187 | (with-current-buffer howdoi-buffer 188 | (read-only-mode -1) 189 | (erase-buffer) 190 | (insert (howdoi-format-question-and-answers question answers)) 191 | (howdoi-mode) 192 | (goto-char (point-min))) 193 | (pop-to-buffer howdoi-buffer)))) 194 | 195 | ;;;###autoload 196 | (defun howdoi-query (query) 197 | "Prompts for the QUERY and performs the search for an answer. 198 | Pop up a buffer displaying an answer." 199 | (interactive "sQuery: ") 200 | (howdoi-request query 'howdoi-pop-answer-to-buffer-callback)) 201 | 202 | (defun howdoi-insert-code-snippet-at-point-callback (question answers snippets) 203 | "Callback which calls immediately after http request. Insert the first 204 | snippet from SNIPPETS at point." 205 | (with-current-buffer howdoi-original-buffer 206 | (insert (car snippets)))) 207 | 208 | ;;;###autoload 209 | (defun howdoi-query-insert-code-snippet-at-point (query) 210 | "Prompt for the QUERY and perform the search for an answer. 211 | Insert a found code snippet at point." 212 | (interactive "sQuery: ") 213 | (setq howdoi-original-buffer (current-buffer)) 214 | (howdoi-request query 'howdoi-insert-code-snippet-at-point-callback)) 215 | 216 | (defun howdoi-request (query callback &optional &key full-answer question) 217 | "Make http request to the Google. Use QUERY as search 218 | string. CALLBACK calls after http request to display the 219 | results." 220 | (setq howdoi-display-callback callback) 221 | (setq howdoi-current-question-num 0) 222 | (setq howdoi-requests-cache (make-hash-table :test 'equal)) 223 | (let ((url-request-method "GET") 224 | (url "http://google.com/search") 225 | (args (concat "?q=" 226 | (url-hexify-string "site:stackoverflow.com ") 227 | (url-hexify-string query)))) 228 | (message "Retrieving answer...") 229 | (url-retrieve (concat url args) 230 | (lambda (status) 231 | (setq howdoi-question-urls (howdoi-retrive-links-from-google 232 | (current-buffer))) 233 | (howdoi-stackoverflow-request (nth howdoi-current-question-num 234 | howdoi-question-urls))) 235 | nil t))) 236 | 237 | (defun howdoi-retrive-links-from-google (buffer) 238 | "Retrieves links from a google search result page." 239 | (let ((result '())) 240 | (with-current-buffer buffer 241 | (goto-char (point-min)) 242 | (while (search-forward "

" nil t) 243 | (when (search-forward-regexp "" nil t) 244 | (let ((str (match-string 1))) 245 | (setq str (nth 1 (split-string str "q="))) 246 | (setq str (nth 0 (split-string str "&"))) 247 | (setq result (append result `(,str))))))) 248 | result)) 249 | 250 | (defun howdoi-stackoverflow-request (url) 251 | "Make http request to the stackoverflow." 252 | (let ((url-request-method "GET") 253 | (cache (gethash url howdoi-requests-cache))) 254 | (if cache 255 | (funcall howdoi-display-callback 256 | (nth 0 cache) 257 | (nth 1 cache) 258 | (nth 2 cache)) 259 | (progn 260 | (setq howdoi-current-stackoverflow-url url) 261 | (message "Retrieving answer...") 262 | (url-retrieve url 263 | (lambda (status) 264 | (let ((answers '()) (snippets '()) (question "")) 265 | (setq answers (howdoi-stackoverflow-retrieve-answer)) 266 | (setq snippets (howdoi-stackoverflow-retrieve-code-snippets)) 267 | (when howdoi-display-question 268 | (setq question (howdoi-stackoverflow-retrieve-question))) 269 | (puthash howdoi-current-stackoverflow-url 270 | `(,question ,answers ,snippets) howdoi-requests-cache) 271 | (message "Answer retrieved!") 272 | (funcall howdoi-display-callback question answers snippets))) 273 | nil t))))) 274 | 275 | (defun howdoi-browse-url (button) 276 | "Retrieve URL from a BUTTON's property and browse it." 277 | (interactive) 278 | (let ((url (button-get button 'url))) 279 | (browse-url url))) 280 | 281 | (defun howdoi-replace-html-ahref-tags () 282 | "Replace a-href tags by text buttons." 283 | (interactive) 284 | (let (p1 p2 p3 p4 p5 p6 (ahref-tag "") (href "") (link-text "")) 285 | (while (search-forward-regexp "]*href=\"[^\"]*?\"[^>]*?>" nil t) 286 | (setq p5 (point)) 287 | (search-backward "" nil t) 295 | (setq p6 (point)) 296 | (setq link-text (buffer-substring-no-properties p5 (- p6 4))) 297 | (delete-region p1 p6) 298 | (insert-text-button link-text 'action 'howdoi-browse-url 'url href)))) 299 | 300 | (defun howdoi-stackoverflow-retrieve-question () 301 | "Retrieve a question from the stackoverflow." 302 | (goto-char (point-min)) 303 | (let ((result "")) 304 | (when (search-forward-regexp "]*?class=\"question" nil t) 305 | (when (search-forward-regexp "" nil t) 306 | (when (search-forward-regexp "
]*>\\(\\(.*?\n?\\)*\\)
" nil t) 307 | (let ((str (match-string 1))) 308 | (with-temp-buffer 309 | (erase-buffer) 310 | (insert str) 311 | (goto-char (point-min)) 312 | (howdoi-replace-html-ahref-tags) 313 | (html2text) 314 | (howdoi-strip-html-tags '("code")) 315 | (setq result (buffer-substring 316 | (point-min) 317 | (point-max)))))))) 318 | result)) 319 | 320 | (defun howdoi-stackoverflow-retrieve-answer () 321 | "Retrieve an answer from the stackoverflow." 322 | (goto-char (point-min)) 323 | (let ((result '())) 324 | (while (search-forward-regexp "]*?class=\"answer" nil t) 325 | (when (search-forward-regexp "" nil t) 326 | (when (search-forward-regexp "
\\(\\(.*?\n?\\)*\\)
" nil t) 327 | (let ((str (match-string 1))) 328 | (with-temp-buffer 329 | (erase-buffer) 330 | (insert str) 331 | (goto-char (point-min)) 332 | (howdoi-replace-html-ahref-tags) 333 | (html2text) 334 | (howdoi-strip-html-tags '("code")) 335 | (setq result (append result `(,(buffer-substring (point-min) (point-max)))))))))) 336 | result)) 337 | 338 | (defun howdoi-strip-html-tags (tags) 339 | "Strip given html TAGS." 340 | (dolist (tagn tags) 341 | (dolist (tag `(,(format "<%s>" tagn) ,(format "" tagn))) 342 | (goto-char (point-min)) 343 | (while (search-forward tag nil t) 344 | (replace-match "" nil t))))) 345 | 346 | (defun howdoi-stackoverflow-retrieve-code-snippets () 347 | "Retrieve code snippets from the stackoverflow." 348 | (goto-char (point-min)) 349 | (let ((result '())) 350 | (while (search-forward-regexp "]*?class=\"answer" nil t) 351 | (if (search-forward-regexp "]*>" nil t) 352 | (when (search-forward-regexp "\\([^<]*?\\)" nil t) 353 | (let ((str (match-string 1))) 354 | (setq result (append result `(,str))))) 355 | (when (search-forward-regexp "\\(.*?\\)" nil t) 356 | (let ((str (match-string 1))) 357 | (setq result (append result `(,str))))))) 358 | result)) 359 | 360 | (defun howdoi-show-next-question () 361 | "Show next question. The purpose of this function to use it in 362 | the *How do I* pop up buffer to view next question." 363 | (interactive) 364 | (setq howdoi-display-callback 'howdoi-pop-answer-to-buffer-callback) 365 | (setq howdoi-current-question-num (+ howdoi-current-question-num 1)) 366 | (when (> howdoi-current-question-num 10) 367 | (setq howdoi-current-question-num 10)) 368 | (howdoi-stackoverflow-request (nth howdoi-current-question-num 369 | howdoi-question-urls))) 370 | 371 | (defun howdoi-show-current-question () 372 | "Pop up a buffer named *How do I* displaying the current found 373 | question. It may be helpful to use after such command as 374 | `howdoi-query-line-at-point-replace-by-code-snippet' to view more 375 | details in a pop up buffer or to find more preferable code 376 | snippet." 377 | (interactive) 378 | (let* ((url (nth howdoi-current-question-num howdoi-question-urls)) 379 | (cache (gethash url howdoi-requests-cache))) 380 | (if cache 381 | (howdoi-pop-answer-to-buffer (nth 0 cache) (nth 1 cache)) 382 | (message "Current question not found")))) 383 | 384 | (defun howdoi-show-previous-question () 385 | "Show previous question. The purpose of this function to use it in 386 | the *How do I* pop up buffer to view previous question." 387 | (interactive) 388 | (setq howdoi-display-callback 'howdoi-pop-answer-to-buffer-callback) 389 | (setq howdoi-current-question-num (- howdoi-current-question-num 1)) 390 | (when (< howdoi-current-question-num 0) 391 | (setq howdoi-current-question-num 0)) 392 | (howdoi-stackoverflow-request (nth howdoi-current-question-num 393 | howdoi-question-urls))) 394 | 395 | (defun howdoi-browse-current-question () 396 | "Ask a WWW browser to open current question." 397 | (interactive) 398 | (let ((url (nth howdoi-current-question-num howdoi-question-urls))) 399 | (browse-url url))) 400 | 401 | ;;;###autoload 402 | (define-minor-mode howdoi-minor-mode 403 | "Toggle howdoi minor mode. 404 | 405 | With a prefix argument ARG, enable Line Number mode if ARG is 406 | positive, and disable it otherwise. If called from Lisp, enable 407 | the mode if ARG is omitted or nil. 408 | 409 | This minor mode provides a set of key bindings for easy access to 410 | the howdoi. 411 | 412 | The following keys are available in `howdoi-minor-mode': 413 | 414 | key binding 415 | ------- ----------- 416 | 417 | C-c C-o n howdoi-show-next-question 418 | C-c C-o p howdoi-show-previous-question 419 | C-c C-o c howdoi-show-current-question 420 | C-c C-o b howdoi-browse-current-question 421 | C-c C-o u howdoi-query 422 | C-c C-o l howdoi-query-line-at-point 423 | C-c C-o r howdoi-query-line-at-point-replace-by-code-snippet 424 | C-c C-o i howdoi-query-insert-code-snippet-at-point" 425 | :lighter " HowDoI" 426 | :keymap (let ((map (make-sparse-keymap))) 427 | (define-key map (kbd "C-c C-o n") 'howdoi-show-next-question) 428 | (define-key map (kbd "C-c C-o p") 'howdoi-show-previous-question) 429 | (define-key map (kbd "C-c C-o c") 'howdoi-show-current-question) 430 | (define-key map (kbd "C-c C-o b") 'howdoi-browse-current-question) 431 | (define-key map (kbd "C-c C-o u") 'howdoi-query) 432 | (define-key map (kbd "C-c C-o l") 'howdoi-query-line-at-point) 433 | (define-key map (kbd "C-c C-o r") 'howdoi-query-line-at-point-replace-by-code-snippet) 434 | (define-key map (kbd "C-c C-o i") 'howdoi-query-insert-code-snippet-at-point) 435 | map) 436 | :group 'howdoi) 437 | 438 | (define-derived-mode howdoi-mode special-mode "HowDoI" 439 | "Howdoi major mode. This major mode is mainly intended to 440 | provide key bindings for easy navigation within a pop up buffer." 441 | :group 'howdoi) 442 | 443 | (define-key howdoi-mode-map (kbd "n") 'howdoi-show-next-question) 444 | (define-key howdoi-mode-map (kbd "p") 'howdoi-show-previous-question) 445 | (define-key howdoi-mode-map (kbd "b") 'howdoi-browse-current-question) 446 | (define-key howdoi-mode-map (kbd "u") 'howdoi-query) 447 | 448 | 449 | (provide 'howdoi) 450 | 451 | ;;; howdoi.el ends here 452 | --------------------------------------------------------------------------------