code.delx.au - gnu-emacs-elpa/blob - counsel.el

   1 ;;; counsel.el --- Various completion functions using Ivy -*- lexical-binding: t -*-
   2
   3 ;; Copyright (C) 2015  Free Software Foundation, Inc.
   4
   5 ;; Author: Oleh Krehel <ohwoeowho@gmail.com>
   6 ;; URL: https://github.com/abo-abo/swiper
   7 ;; Version: 0.1.0
   8 ;; Package-Requires: ((emacs "24.1") (swiper "0.4.0"))
   9 ;; Keywords: completion, matching
  10
  11 ;; This file is part of GNU Emacs.
  12
  13 ;; This file is free software; you can redistribute it and/or modify
  14 ;; it under the terms of the GNU General Public License as published by
  15 ;; the Free Software Foundation; either version 3, or (at your option)
  16 ;; any later version.
  17
  18 ;; This program is distributed in the hope that it will be useful,
  19 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  20 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21 ;; GNU General Public License for more details.
  22
  23 ;; For a full copy of the GNU General Public License
  24 ;; see <http://www.gnu.org/licenses/>.
  25
  26 ;;; Commentary:
  27 ;;
  28 ;; Just call one of the interactive functions in this file to complete
  29 ;; the corresponding thing using `ivy'.
  30 ;;
  31 ;; Currently available: Elisp symbols, Clojure symbols, Git files.
  32
  33 ;;; Code:
  34
  35 (require 'swiper)
  36 (require 'etags)
  37
  38 ;;;###autoload
  39 (defun counsel-el ()
  40   "Elisp completion at point."
  41   (interactive)
  42   (let* ((bnd (unless (and (looking-at ")")
  43                            (eq (char-before) ?\())
  44                 (bounds-of-thing-at-point
  45                  'symbol)))
  46          (str (if bnd
  47                   (buffer-substring-no-properties
  48                    (car bnd)
  49                    (cdr bnd))
  50                 ""))
  51          (ivy-height 7)
  52          (funp (eq (char-before (car bnd)) ?\())
  53          symbol-names)
  54     (if bnd
  55         (progn
  56           (setq ivy-completion-beg
  57                 (move-marker (make-marker) (car bnd)))
  58           (setq ivy-completion-end
  59                 (move-marker (make-marker) (cdr bnd))))
  60       (setq ivy-completion-beg nil)
  61       (setq ivy-completion-end nil))
  62     (if (string= str "")
  63         (mapatoms
  64          (lambda (x)
  65            (when (symbolp x)
  66              (push (symbol-name x) symbol-names))))
  67       (setq symbol-names
  68             (all-completions str obarray
  69                              (and funp
  70                                   (lambda (x)
  71                                     (or (functionp x)
  72                                         (macrop x)
  73                                         (special-form-p x)))))))
  74     (ivy-read "Symbol name: " symbol-names
  75               :predicate (and funp #'functionp)
  76               :initial-input str
  77               :action #'ivy-completion-in-region-action)))
  78
  79 (declare-function slime-symbol-start-pos "ext:slime")
  80 (declare-function slime-symbol-end-pos "ext:slime")
  81 (declare-function slime-contextual-completions "ext:slime-c-p-c")
  82
  83 ;;;###autoload
  84 (defun counsel-cl ()
  85   "Common Lisp completion at point."
  86   (interactive)
  87   (setq ivy-completion-beg (slime-symbol-start-pos))
  88   (setq ivy-completion-end (slime-symbol-end-pos))
  89   (ivy-read "Symbol name: "
  90             (car (slime-contextual-completions
  91                   ivy-completion-beg
  92                   ivy-completion-end))
  93             :action #'ivy-completion-in-region-action))
  94
  95 (declare-function deferred:sync! "ext:deferred")
  96 (declare-function jedi:complete-request "ext:jedi-core")
  97 (declare-function jedi:ac-direct-matches "ext:jedi")
  98
  99 (defun counsel-jedi ()
 100   "Python completion at point."
 101   (interactive)
 102   (let ((bnd (bounds-of-thing-at-point 'symbol)))
 103     (if bnd
 104         (progn
 105           (setq ivy-completion-beg (car bnd))
 106           (setq ivy-completion-end (cdr bnd)))
 107       (setq ivy-completion-beg nil)
 108       (setq ivy-completion-end nil)))
 109   (deferred:sync!
 110    (jedi:complete-request))
 111   (ivy-read "Symbol name: " (jedi:ac-direct-matches)
 112             :action #'counsel--py-action))
 113
 114 (defun counsel--py-action (symbol)
 115   "Insert SYMBOL, erasing the previous one."
 116   (when (stringp symbol)
 117     (with-ivy-window
 118       (when ivy-completion-beg
 119         (delete-region
 120          ivy-completion-beg
 121          ivy-completion-end))
 122       (setq ivy-completion-beg
 123             (move-marker (make-marker) (point)))
 124       (insert symbol)
 125       (setq ivy-completion-end
 126             (move-marker (make-marker) (point)))
 127       (when (equal (get-text-property 0 'symbol symbol) "f")
 128         (insert "()")
 129         (setq ivy-completion-end
 130               (move-marker (make-marker) (point)))
 131         (backward-char 1)))))
 132
 133 (defvar counsel-describe-map
 134   (let ((map (make-sparse-keymap)))
 135     (define-key map (kbd "C-.") #'counsel-find-symbol)
 136     (define-key map (kbd "C-,") #'counsel--info-lookup-symbol)
 137     map))
 138
 139 (defun counsel-find-symbol ()
 140   "Jump to the definition of the current symbol."
 141   (interactive)
 142   (ivy-exit-with-action #'counsel--find-symbol))
 143
 144 (defun counsel--info-lookup-symbol ()
 145   "Lookup the current symbol in the info docs."
 146   (interactive)
 147   (ivy-exit-with-action #'counsel-info-lookup-symbol))
 148
 149 (defun counsel--find-symbol (x)
 150   "Find symbol definition that corresponds to string X."
 151   (with-ivy-window
 152     (with-no-warnings
 153       (ring-insert find-tag-marker-ring (point-marker)))
 154     (let ((full-name (get-text-property 0 'full-name x)))
 155       (if full-name
 156           (find-library full-name)
 157         (let ((sym (read x)))
 158           (cond ((and (eq (ivy-state-caller ivy-last)
 159                           'counsel-describe-variable)
 160                       (boundp sym))
 161                  (find-variable sym))
 162                 ((fboundp sym)
 163                  (find-function sym))
 164                 ((boundp sym)
 165                  (find-variable sym))
 166                 ((or (featurep sym)
 167                      (locate-library
 168                       (prin1-to-string sym)))
 169                  (find-library
 170                   (prin1-to-string sym)))
 171                 (t
 172                  (error "Couldn't fild definition of %s"
 173                         sym))))))))
 174
 175 (defvar counsel-describe-symbol-history nil
 176   "History for `counsel-describe-variable' and `counsel-describe-function'.")
 177
 178 (defun counsel-symbol-at-point ()
 179   "Return current symbol at point as a string."
 180   (let ((s (thing-at-point 'symbol)))
 181     (and (stringp s)
 182          (if (string-match "\\`[`']?\\(.*?\\)'?\\'" s)
 183              (match-string 1 s)
 184            s))))
 185
 186 (defun counsel-variable-list ()
 187   "Return the list of all currently bound variables."
 188   (let (cands)
 189     (mapatoms
 190      (lambda (vv)
 191        (when (or (get vv 'variable-documentation)
 192                  (and (boundp vv) (not (keywordp vv))))
 193          (push (symbol-name vv) cands))))
 194     cands))
 195
 196 ;;;###autoload
 197 (defun counsel-describe-variable ()
 198   "Forward to `describe-variable'."
 199   (interactive)
 200   (let ((enable-recursive-minibuffers t))
 201     (ivy-read
 202      "Describe variable: "
 203      (counsel-variable-list)
 204      :keymap counsel-describe-map
 205      :preselect (counsel-symbol-at-point)
 206      :history 'counsel-describe-symbol-history
 207      :require-match t
 208      :sort t
 209      :action (lambda (x)
 210                (describe-variable
 211                 (intern x)))
 212      :caller 'counsel-describe-variable)))
 213
 214 (ivy-set-actions
 215  'counsel-describe-variable
 216  '(("i" counsel-info-lookup-symbol "info")
 217    ("d" counsel--find-symbol "definition")))
 218
 219 (ivy-set-actions
 220  'counsel-describe-function
 221  '(("i" counsel-info-lookup-symbol "info")
 222    ("d" counsel--find-symbol "definition")))
 223
 224 (ivy-set-actions
 225  'counsel-M-x
 226  '(("d" counsel--find-symbol "definition")))
 227
 228 ;;;###autoload
 229 (defun counsel-describe-function ()
 230   "Forward to `describe-function'."
 231   (interactive)
 232   (let ((enable-recursive-minibuffers t))
 233     (ivy-read "Describe function: "
 234               (let (cands)
 235                 (mapatoms
 236                  (lambda (x)
 237                    (when (fboundp x)
 238                      (push (symbol-name x) cands))))
 239                 cands)
 240               :keymap counsel-describe-map
 241               :preselect (counsel-symbol-at-point)
 242               :history 'counsel-describe-symbol-history
 243               :require-match t
 244               :sort t
 245               :action (lambda (x)
 246                         (describe-function
 247                          (intern x)))
 248               :caller 'counsel-describe-function)))
 249
 250 (defvar info-lookup-mode)
 251 (declare-function info-lookup->completions "info-look")
 252 (declare-function info-lookup->mode-value "info-look")
 253 (declare-function info-lookup-select-mode "info-look")
 254 (declare-function info-lookup-change-mode "info-look")
 255 (declare-function info-lookup "info-look")
 256
 257 ;;;###autoload
 258 (defun counsel-info-lookup-symbol (symbol &optional mode)
 259   "Forward to (`info-describe-symbol' SYMBOL MODE) with ivy completion."
 260   (interactive
 261    (progn
 262      (require 'info-look)
 263      (let* ((topic 'symbol)
 264             (mode (cond (current-prefix-arg
 265                          (info-lookup-change-mode topic))
 266                         ((info-lookup->mode-value
 267                           topic (info-lookup-select-mode))
 268                          info-lookup-mode)
 269                         ((info-lookup-change-mode topic))))
 270             (completions (info-lookup->completions topic mode))
 271             (enable-recursive-minibuffers t)
 272             (value (ivy-read
 273                     "Describe symbol: "
 274                     (mapcar #'car completions)
 275                     :sort t)))
 276        (list value info-lookup-mode))))
 277   (require 'info-look)
 278   (info-lookup 'symbol symbol mode))
 279
 280 (defvar counsel-unicode-char-history nil
 281   "History for `counsel-unicode-char'.")
 282
 283 ;;;###autoload
 284 (defun counsel-unicode-char ()
 285   "Insert a Unicode character at point."
 286   (interactive)
 287   (let ((minibuffer-allow-text-properties t))
 288     (setq ivy-completion-beg (point))
 289     (setq ivy-completion-end (point))
 290     (ivy-read "Unicode name: "
 291               (mapcar (lambda (x)
 292                         (propertize
 293                          (format "% -6X% -60s%c" (cdr x) (car x) (cdr x))
 294                          'result (cdr x)))
 295                       (ucs-names))
 296               :action (lambda (char)
 297                         (with-ivy-window
 298                           (delete-region ivy-completion-beg ivy-completion-end)
 299                           (setq ivy-completion-beg (point))
 300                           (insert-char (get-text-property 0 'result char))
 301                           (setq ivy-completion-end (point))))
 302               :history 'counsel-unicode-char-history)))
 303
 304 (declare-function cider-sync-request:complete "ext:cider-client")
 305 ;;;###autoload
 306 (defun counsel-clj ()
 307   "Clojure completion at point."
 308   (interactive)
 309   (counsel--generic
 310    (lambda (str)
 311      (mapcar
 312       #'cl-caddr
 313       (cider-sync-request:complete str ":same")))))
 314
 315 (defvar counsel--git-dir nil
 316   "Store the base git directory.")
 317
 318 ;;;###autoload
 319 (defun counsel-git ()
 320   "Find file in the current Git repository."
 321   (interactive)
 322   (setq counsel--git-dir (expand-file-name
 323                           (locate-dominating-file
 324                            default-directory ".git")))
 325   (let* ((default-directory counsel--git-dir)
 326          (cands (split-string
 327                  (shell-command-to-string
 328                   "git ls-files --full-name --")
 329                  "\n"
 330                  t)))
 331     (ivy-read "Find file: " cands
 332               :action #'counsel-git-action)))
 333
 334 (defun counsel-git-action (x)
 335   (with-ivy-window
 336     (let ((default-directory counsel--git-dir))
 337       (find-file x))))
 338
 339 (defvar counsel--git-grep-dir nil
 340   "Store the base git directory.")
 341
 342 (defvar counsel--git-grep-count nil
 343   "Store the line count in current repository.")
 344
 345 (defun counsel-more-chars (n)
 346   "Return two fake candidates prompting for at least N input."
 347   (list ""
 348         (format "%d chars more" (- n (length ivy-text)))))
 349
 350 (defvar counsel-git-grep-cmd "git --no-pager grep --full-name -n --no-color -i -e %S"
 351   "Store the command for `counsel-git-grep'.")
 352
 353 (defun counsel-git-grep-function (string &optional _pred &rest _unused)
 354   "Grep in the current git repository for STRING."
 355   (if (and (> counsel--git-grep-count 20000)
 356            (< (length string) 3))
 357       (counsel-more-chars 3)
 358     (let* ((default-directory counsel--git-grep-dir)
 359            (cmd (format counsel-git-grep-cmd
 360                         (setq ivy--old-re (ivy--regex string t)))))
 361       (if (<= counsel--git-grep-count 20000)
 362           (split-string (shell-command-to-string cmd) "\n" t)
 363         (counsel--gg-candidates (ivy--regex string))
 364         nil))))
 365
 366 (defvar counsel-git-grep-map
 367   (let ((map (make-sparse-keymap)))
 368     (define-key map (kbd "C-l") 'counsel-git-grep-recenter)
 369     (define-key map (kbd "M-q") 'counsel-git-grep-query-replace)
 370     map))
 371
 372 (defun counsel-git-grep-query-replace ()
 373   "Start `query-replace' with string to replace from last search string."
 374   (interactive)
 375   (if (null (window-minibuffer-p))
 376       (user-error
 377        "Should only be called in the minibuffer through `counsel-git-grep-map'")
 378     (let* ((enable-recursive-minibuffers t)
 379            (from (ivy--regex ivy-text))
 380            (to (query-replace-read-to from "Query replace" t)))
 381       (ivy-exit-with-action
 382        (lambda (_)
 383          (let (done-buffers)
 384            (dolist (cand ivy--old-cands)
 385              (when (string-match "\\`\\(.*?\\):\\([0-9]+\\):\\(.*\\)\\'" cand)
 386                (with-ivy-window
 387                  (let ((file-name (match-string-no-properties 1 cand)))
 388                    (setq file-name (expand-file-name file-name counsel--git-grep-dir))
 389                    (unless (member file-name done-buffers)
 390                      (push file-name done-buffers)
 391                      (find-file file-name)
 392                      (goto-char (point-min)))
 393                    (perform-replace from to t t nil)))))))))))
 394
 395 (defun counsel-git-grep-recenter ()
 396   (interactive)
 397   (with-ivy-window
 398     (counsel-git-grep-action ivy--current)
 399     (recenter-top-bottom)))
 400
 401 (defun counsel-git-grep-action (x)
 402   (when (string-match "\\`\\(.*?\\):\\([0-9]+\\):\\(.*\\)\\'" x)
 403     (with-ivy-window
 404       (let ((file-name (match-string-no-properties 1 x))
 405             (line-number (match-string-no-properties 2 x)))
 406         (find-file (expand-file-name file-name counsel--git-grep-dir))
 407         (goto-char (point-min))
 408         (forward-line (1- (string-to-number line-number)))
 409         (re-search-forward (ivy--regex ivy-text t) (line-end-position) t)
 410         (unless (eq ivy-exit 'done)
 411           (swiper--cleanup)
 412           (swiper--add-overlays (ivy--regex ivy-text)))))))
 413
 414 (defvar counsel-git-grep-history nil
 415   "History for `counsel-git-grep'.")
 416
 417 (defvar counsel-git-grep-cmd-history
 418   '("git --no-pager grep --full-name -n --no-color -i -e %S")
 419   "History for `counsel-git-grep' shell commands.")
 420
 421 ;;;###autoload
 422 (defun counsel-git-grep (&optional cmd initial-input)
 423   "Grep for a string in the current git repository.
 424 When CMD is a string, use it as a \"git grep\" command.
 425 When CMD is non-nil, prompt for a specific \"git grep\" command.
 426 INITIAL-INPUT can be given as the initial minibuffer input."
 427   (interactive "P")
 428   (cond
 429     ((stringp cmd)
 430      (setq counsel-git-grep-cmd cmd))
 431     (cmd
 432      (setq counsel-git-grep-cmd
 433            (ivy-read "cmd: " counsel-git-grep-cmd-history
 434                      :history 'counsel-git-grep-cmd-history))
 435      (setq counsel-git-grep-cmd-history
 436            (delete-dups counsel-git-grep-cmd-history)))
 437     (t
 438      (setq counsel-git-grep-cmd "git --no-pager grep --full-name -n --no-color -i -e %S")))
 439   (setq counsel--git-grep-dir
 440         (locate-dominating-file default-directory ".git"))
 441   (if (null counsel--git-grep-dir)
 442       (error "Not in a git repository")
 443     (setq counsel--git-grep-count (counsel--gg-count "" t))
 444     (ivy-read "git grep: " 'counsel-git-grep-function
 445               :initial-input initial-input
 446               :matcher #'counsel-git-grep-matcher
 447               :dynamic-collection (> counsel--git-grep-count 20000)
 448               :keymap counsel-git-grep-map
 449               :action #'counsel-git-grep-action
 450               :unwind #'swiper--cleanup
 451               :history 'counsel-git-grep-history
 452               :caller 'counsel-git-grep)))
 453
 454 (defcustom counsel-find-file-at-point nil
 455   "When non-nil, add file-at-point to the list of candidates."
 456   :type 'boolean
 457   :group 'ivy)
 458
 459 (declare-function ffap-guesser "ffap")
 460
 461 (defvar counsel-find-file-map
 462   (let ((map (make-sparse-keymap)))
 463     (define-key map (kbd "C-DEL") 'counsel-up-directory)
 464     (define-key map (kbd "C-<backspace>") 'counsel-up-directory)
 465     map))
 466
 467 (defun counsel-up-directory ()
 468   "Go to the parent directory preselecting the current one."
 469   (interactive)
 470   (let ((dir-file-name
 471          (directory-file-name (expand-file-name ivy--directory))))
 472     (ivy--cd (file-name-directory dir-file-name))
 473     (setf (ivy-state-preselect ivy-last)
 474           (file-name-as-directory (file-name-nondirectory dir-file-name)))))
 475
 476 ;;;###autoload
 477 (defun counsel-find-file (&optional initial-input)
 478   "Forward to `find-file'.
 479 When INITIAL-INPUT is non-nil, use it in the minibuffer during completion."
 480   (interactive)
 481   (ivy-read "Find file: " 'read-file-name-internal
 482             :matcher #'counsel--find-file-matcher
 483             :initial-input initial-input
 484             :action
 485             (lambda (x)
 486               (with-ivy-window
 487                 (find-file (expand-file-name x ivy--directory))))
 488             :preselect (when counsel-find-file-at-point
 489                          (require 'ffap)
 490                          (ffap-guesser))
 491             :require-match 'confirm-after-completion
 492             :history 'file-name-history
 493             :keymap counsel-find-file-map))
 494
 495 (defun counsel-at-git-issue-p ()
 496   "Whe point is at an issue in a Git-versioned file, return the issue string."
 497   (and (looking-at "#[0-9]+")
 498        (or
 499         (eq (vc-backend (buffer-file-name)) 'Git)
 500         (memq major-mode '(magit-commit-mode)))
 501        (match-string-no-properties 0)))
 502
 503 (defun counsel-github-url-p ()
 504   "Return a Github issue URL at point."
 505   (let ((url (counsel-at-git-issue-p)))
 506     (when url
 507       (let ((origin (shell-command-to-string
 508                      "git remote get-url origin"))
 509             user repo)
 510         (cond ((string-match "\\`git@github.com:\\([^/]+\\)/\\(.*\\)\\.git$"
 511                              origin)
 512                (setq user (match-string 1 origin))
 513                (setq repo (match-string 2 origin)))
 514               ((string-match "\\`https://github.com/\\([^/]+\\)/\\(.*\\)$"
 515                              origin)
 516                (setq user (match-string 1 origin))
 517                (setq repo (match-string 2 origin))))
 518         (when user
 519           (setq url (format "https://github.com/%s/%s/issues/%s"
 520                             user repo (substring url 1))))))))
 521 (add-to-list 'ivy-ffap-url-functions 'counsel-github-url-p)
 522
 523 (defun counsel-emacs-url-p ()
 524   "Return a Debbugs issue URL at point."
 525   (let ((url (counsel-at-git-issue-p)))
 526     (when url
 527       (let ((origin (shell-command-to-string
 528                      "git remote get-url origin")))
 529         (when (string-match "git.sv.gnu.org:/srv/git/emacs.git" origin)
 530           (format "http://debbugs.gnu.org/cgi/bugreport.cgi?bug=%s"
 531                   (substring url 1)))))))
 532 (add-to-list 'ivy-ffap-url-functions 'counsel-emacs-url-p)
 533
 534 (defcustom counsel-find-file-ignore-regexp nil
 535   "A regexp of files to ignore while in `counsel-find-file'.
 536 These files are un-ignored if `ivy-text' matches them.
 537 The common way to show all files is to start `ivy-text' with a dot.
 538 Possible value: \"\\(?:\\`[#.]\\)\\|\\(?:[#~]\\'\\)\"."
 539   :group 'ivy)
 540
 541 (defun counsel--find-file-matcher (regexp candidates)
 542   "Return REGEXP-matching CANDIDATES.
 543 Skip some dotfiles unless `ivy-text' requires them."
 544   (let ((res (ivy--re-filter regexp candidates)))
 545     (if (or (null ivy-use-ignore)
 546             (null counsel-find-file-ignore-regexp)
 547             (string-match counsel-find-file-ignore-regexp ivy-text))
 548         res
 549       (or (cl-remove-if
 550            (lambda (x)
 551              (string-match counsel-find-file-ignore-regexp x))
 552            res)
 553           res))))
 554
 555 (defun counsel-git-grep-matcher (regexp candidates)
 556   (or (and (equal regexp ivy--old-re)
 557            ivy--old-cands)
 558       (prog1
 559           (setq ivy--old-cands
 560                 (cl-remove-if-not
 561                  (lambda (x)
 562                    (ignore-errors
 563                      (when (string-match "^[^:]+:[^:]+:" x)
 564                        (setq x (substring x (match-end 0)))
 565                        (if (stringp regexp)
 566                            (string-match regexp x)
 567                          (let ((res t))
 568                            (dolist (re regexp)
 569                              (setq res
 570                                    (and res
 571                                         (ignore-errors
 572                                           (if (cdr re)
 573                                               (string-match (car re) x)
 574                                             (not (string-match (car re) x)))))))
 575                            res)))))
 576                  candidates))
 577         (setq ivy--old-re regexp))))
 578
 579 (defvar counsel--async-time nil
 580   "Store the time when a new process was started.
 581 Or the time of the last minibuffer update.")
 582
 583 (defun counsel--async-command (cmd)
 584   (let* ((counsel--process " *counsel*")
 585          (proc (get-process counsel--process))
 586          (buff (get-buffer counsel--process)))
 587     (when proc
 588       (delete-process proc))
 589     (when buff
 590       (kill-buffer buff))
 591     (setq proc (start-process-shell-command
 592                 counsel--process
 593                 counsel--process
 594                 cmd))
 595     (setq counsel--async-time (current-time))
 596     (set-process-sentinel proc #'counsel--async-sentinel)
 597     (set-process-filter proc #'counsel--async-filter)))
 598
 599 (defun counsel--async-sentinel (process event)
 600   (if (string= event "finished\n")
 601       (progn
 602         (with-current-buffer (process-buffer process)
 603           (ivy--set-candidates
 604            (ivy--sort-maybe
 605             (split-string (buffer-string) "\n" t)))
 606           (if (null ivy--old-cands)
 607               (setq ivy--index
 608                     (or (ivy--preselect-index
 609                          (ivy-state-preselect ivy-last)
 610                          ivy--all-candidates)
 611                         0))
 612             (let ((re (funcall ivy--regex-function ivy-text)))
 613               (unless (stringp re)
 614                 (setq re (caar re)))
 615               (ivy--recompute-index
 616                ivy-text re ivy--all-candidates)))
 617           (setq ivy--old-cands ivy--all-candidates))
 618         (if (null ivy--all-candidates)
 619             (ivy--insert-minibuffer "")
 620           (ivy--exhibit)))
 621     (if (string= event "exited abnormally with code 1\n")
 622         (progn
 623           (setq ivy--all-candidates '("Error"))
 624           (setq ivy--old-cands ivy--all-candidates)
 625           (ivy--exhibit)))))
 626
 627 (defun counsel--async-filter (process str)
 628   "Receive from PROCESS the output STR.
 629 Update the minibuffer with the amount of lines collected every
 630 0.5 seconds since the last update."
 631   (with-current-buffer (process-buffer process)
 632     (insert str))
 633   (let (size)
 634     (when (time-less-p
 635            ;; 0.5s
 636            '(0 0 500000 0)
 637            (time-since counsel--async-time))
 638       (with-current-buffer (process-buffer process)
 639         (goto-char (point-min))
 640         (setq size (- (buffer-size) (forward-line (buffer-size))))
 641         (ivy--set-candidates
 642          (split-string (buffer-string) "\n" t)))
 643       (let ((ivy--prompt (format
 644                           (concat "%d++ " (ivy-state-prompt ivy-last))
 645                           size)))
 646         (ivy--insert-minibuffer
 647          (ivy--format ivy--all-candidates)))
 648       (setq counsel--async-time (current-time)))))
 649
 650 (defun counsel-locate-action-extern (x)
 651   "Use xdg-open shell command on X."
 652   (call-process shell-file-name nil
 653                 nil nil
 654                 shell-command-switch
 655                 (format "%s %s"
 656                         (if (eq system-type 'darwin)
 657                                     "open"
 658                                   "xdg-open")
 659                         (shell-quote-argument x))))
 660
 661 (declare-function dired-jump "dired-x")
 662 (defun counsel-locate-action-dired (x)
 663   "Use `dired-jump' on X."
 664   (dired-jump nil x))
 665
 666 (defvar counsel-locate-history nil
 667   "History for `counsel-locate'.")
 668
 669 (defcustom counsel-locate-options (if (eq system-type 'darwin)
 670                                       '("-i")
 671                                     '("-i" "--regex"))
 672   "Command line options for `locate`."
 673   :group 'ivy
 674   :type  '(repeat string))
 675
 676 (ivy-set-actions
 677  'counsel-locate
 678  '(("x" counsel-locate-action-extern "xdg-open")
 679    ("d" counsel-locate-action-dired "dired")))
 680
 681 (defun counsel-unquote-regex-parens (str)
 682   (replace-regexp-in-string
 683    "\\\\)" ")"
 684    (replace-regexp-in-string
 685     "\\\\(" "("
 686     str)))
 687
 688 (defun counsel-locate-function (str)
 689   (if (< (length str) 3)
 690       (counsel-more-chars 3)
 691     (counsel--async-command
 692      (format "locate %s '%s'"
 693              (mapconcat #'identity counsel-locate-options " ")
 694              (counsel-unquote-regex-parens
 695               (ivy--regex str))))
 696     '("" "working...")))
 697
 698 (defun counsel-delete-process ()
 699   (let ((process (get-process " *counsel*")))
 700     (when process
 701       (delete-process process))))
 702
 703 ;;;###autoload
 704 (defun counsel-locate (&optional initial-input)
 705   "Call the \"locate\" shell command.
 706 INITIAL-INPUT can be given as the initial minibuffer input."
 707   (interactive)
 708   (ivy-read "Locate: " #'counsel-locate-function
 709             :initial-input initial-input
 710             :dynamic-collection t
 711             :history 'counsel-locate-history
 712             :action (lambda (file)
 713                       (with-ivy-window
 714                         (when file
 715                           (find-file file))))
 716             :unwind #'counsel-delete-process
 717             :caller 'counsel-locate))
 718
 719 (defun counsel--generic (completion-fn)
 720   "Complete thing at point with COMPLETION-FN."
 721   (let* ((bnd (bounds-of-thing-at-point 'symbol))
 722          (str (if bnd
 723                   (buffer-substring-no-properties
 724                    (car bnd) (cdr bnd))
 725                 ""))
 726          (candidates (funcall completion-fn str))
 727          (ivy-height 7)
 728          (res (ivy-read (format "pattern (%s): " str)
 729                         candidates)))
 730     (when (stringp res)
 731       (when bnd
 732         (delete-region (car bnd) (cdr bnd)))
 733       (insert res))))
 734
 735 (defun counsel-directory-parent (dir)
 736   "Return the directory parent of directory DIR."
 737   (concat (file-name-nondirectory
 738            (directory-file-name dir)) "/"))
 739
 740 (defun counsel-string-compose (prefix str)
 741   "Make PREFIX the display prefix of STR though text properties."
 742   (let ((str (copy-sequence str)))
 743     (put-text-property
 744      0 1 'display
 745      (concat prefix (substring str 0 1))
 746      str)
 747     str))
 748
 749 ;;;###autoload
 750 (defun counsel-load-library ()
 751   "Load a selected the Emacs Lisp library.
 752 The libraries are offered from `load-path'."
 753   (interactive)
 754   (let ((dirs load-path)
 755         (suffix (concat (regexp-opt '(".el" ".el.gz") t) "\\'"))
 756         (cands (make-hash-table :test #'equal))
 757         short-name
 758         old-val
 759         dir-parent
 760         res)
 761     (dolist (dir dirs)
 762       (when (file-directory-p dir)
 763         (dolist (file (file-name-all-completions "" dir))
 764           (when (string-match suffix file)
 765             (unless (string-match "pkg.elc?$" file)
 766               (setq short-name (substring file 0 (match-beginning 0)))
 767               (if (setq old-val (gethash short-name cands))
 768                   (progn
 769                     ;; assume going up directory once will resolve name clash
 770                     (setq dir-parent (counsel-directory-parent (cdr old-val)))
 771                     (puthash short-name
 772                              (cons
 773                               (counsel-string-compose dir-parent (car old-val))
 774                               (cdr old-val))
 775                              cands)
 776                     (setq dir-parent (counsel-directory-parent dir))
 777                     (puthash (concat dir-parent short-name)
 778                              (cons
 779                               (propertize
 780                                (counsel-string-compose
 781                                 dir-parent short-name)
 782                                'full-name (expand-file-name file dir))
 783                               dir)
 784                              cands))
 785                 (puthash short-name
 786                          (cons (propertize
 787                                 short-name
 788                                 'full-name (expand-file-name file dir))
 789                                dir) cands)))))))
 790     (maphash (lambda (_k v) (push (car v) res)) cands)
 791     (ivy-read "Load library: " (nreverse res)
 792               :action (lambda (x)
 793                         (load-library
 794                          (get-text-property 0 'full-name x)))
 795               :keymap counsel-describe-map)))
 796
 797 (defvar counsel-gg-state nil
 798   "The current state of candidates / count sync.")
 799
 800 (defun counsel--gg-candidates (regex)
 801   "Return git grep candidates for REGEX."
 802   (setq counsel-gg-state -2)
 803   (counsel--gg-count regex)
 804   (let* ((default-directory counsel--git-grep-dir)
 805          (counsel-gg-process " *counsel-gg*")
 806          (proc (get-process counsel-gg-process))
 807          (buff (get-buffer counsel-gg-process)))
 808     (when proc
 809       (delete-process proc))
 810     (when buff
 811       (kill-buffer buff))
 812     (setq proc (start-process-shell-command
 813                 counsel-gg-process
 814                 counsel-gg-process
 815                 (concat
 816                  (format counsel-git-grep-cmd regex)
 817                  " | head -n 200")))
 818     (set-process-sentinel
 819      proc
 820      #'counsel--gg-sentinel)))
 821
 822 (defun counsel--gg-sentinel (process event)
 823   (if (string= event "finished\n")
 824       (progn
 825         (with-current-buffer (process-buffer process)
 826           (setq ivy--all-candidates
 827                 (or (split-string (buffer-string) "\n" t)
 828                     '("")))
 829           (setq ivy--old-cands ivy--all-candidates))
 830         (when (= 0 (cl-incf counsel-gg-state))
 831           (ivy--exhibit)))
 832     (if (string= event "exited abnormally with code 1\n")
 833         (progn
 834           (setq ivy--all-candidates '("Error"))
 835           (setq ivy--old-cands ivy--all-candidates)
 836           (ivy--exhibit)))))
 837
 838 (defun counsel--gg-count (regex &optional no-async)
 839   "Quickly and asynchronously count the amount of git grep REGEX matches.
 840 When NO-ASYNC is non-nil, do it synchronously."
 841   (let ((default-directory counsel--git-grep-dir)
 842         (cmd
 843          (concat
 844           (format
 845            (replace-regexp-in-string
 846             "--full-name" "-c"
 847             counsel-git-grep-cmd)
 848            ;; "git grep -i -c '%s'"
 849            (replace-regexp-in-string
 850             "-" "\\\\-"
 851             (replace-regexp-in-string "'" "''" regex)))
 852           " | sed 's/.*:\\(.*\\)/\\1/g' | awk '{s+=$1} END {print s}'"))
 853         (counsel-ggc-process " *counsel-gg-count*"))
 854     (if no-async
 855         (string-to-number (shell-command-to-string cmd))
 856       (let ((proc (get-process counsel-ggc-process))
 857             (buff (get-buffer counsel-ggc-process)))
 858         (when proc
 859           (delete-process proc))
 860         (when buff
 861           (kill-buffer buff))
 862         (setq proc (start-process-shell-command
 863                     counsel-ggc-process
 864                     counsel-ggc-process
 865                     cmd))
 866         (set-process-sentinel
 867          proc
 868          #'(lambda (process event)
 869              (when (string= event "finished\n")
 870                (with-current-buffer (process-buffer process)
 871                  (setq ivy--full-length (string-to-number (buffer-string))))
 872                (when (= 0 (cl-incf counsel-gg-state))
 873                  (ivy--exhibit)))))))))
 874
 875 (defun counsel--M-x-transformer (cand-pair)
 876   "Add a binding to CAND-PAIR cdr if the car is bound in the current window.
 877 CAND-PAIR is (command-name . extra-info)."
 878   (let* ((command-name (car cand-pair))
 879          (extra-info (cdr cand-pair))
 880          (binding (substitute-command-keys (format "\\[%s]" command-name))))
 881     (setq binding (replace-regexp-in-string "C-x 6" "<f2>" binding))
 882     (if (string-match "^M-x" binding)
 883         cand-pair
 884       (cons command-name
 885             (if extra-info
 886                 (format " %s (%s)" extra-info (propertize binding 'face 'font-lock-keyword-face))
 887               (format " (%s)" (propertize binding 'face 'font-lock-keyword-face)))))))
 888
 889 (defvar smex-initialized-p)
 890 (defvar smex-ido-cache)
 891 (declare-function smex-initialize "ext:smex")
 892 (declare-function smex-detect-new-commands "ext:smex")
 893 (declare-function smex-update "ext:smex")
 894 (declare-function smex-rank "ext:smex")
 895
 896 (defun counsel--M-x-prompt ()
 897   "M-x plus the string representation of `current-prefix-arg'."
 898   (if (not current-prefix-arg)
 899       "M-x "
 900     (concat
 901      (if (eq current-prefix-arg '-)
 902          "- "
 903        (if (integerp current-prefix-arg)
 904            (format "%d " current-prefix-arg)
 905          (if (= (car current-prefix-arg) 4)
 906              "C-u "
 907            (format "%d " (car current-prefix-arg)))))
 908      "M-x ")))
 909
 910 ;;;###autoload
 911 (defun counsel-M-x (&optional initial-input)
 912   "Ivy version of `execute-extended-command'.
 913 Optional INITIAL-INPUT is the initial input in the minibuffer."
 914   (interactive)
 915   (unless initial-input
 916     (setq initial-input (cdr (assoc this-command
 917                                     ivy-initial-inputs-alist))))
 918   (let* ((store ivy-format-function)
 919          (ivy-format-function
 920           (lambda (cand-pairs)
 921             (funcall
 922              store
 923              (with-ivy-window
 924                (mapcar #'counsel--M-x-transformer cand-pairs)))))
 925          (cands obarray)
 926          (pred 'commandp)
 927          (sort t))
 928     (when (require 'smex nil 'noerror)
 929       (unless smex-initialized-p
 930         (smex-initialize))
 931       (smex-detect-new-commands)
 932       (smex-update)
 933       (setq cands smex-ido-cache)
 934       (setq pred nil)
 935       (setq sort nil))
 936     (ivy-read (counsel--M-x-prompt) cands
 937               :predicate pred
 938               :require-match t
 939               :history 'extended-command-history
 940               :action
 941               (lambda (cmd)
 942                 (when (featurep 'smex)
 943                   (smex-rank (intern cmd)))
 944                 (let ((prefix-arg current-prefix-arg)
 945                       (ivy-format-function store)
 946                       (this-command (intern cmd)))
 947                   (command-execute (intern cmd) 'record)))
 948               :sort sort
 949               :keymap counsel-describe-map
 950               :initial-input initial-input
 951               :caller 'counsel-M-x)))
 952
 953 (declare-function powerline-reset "ext:powerline")
 954
 955 (defun counsel--load-theme-action (x)
 956   "Disable current themes and load theme X."
 957   (condition-case nil
 958       (progn
 959         (mapc #'disable-theme custom-enabled-themes)
 960         (load-theme (intern x))
 961         (when (fboundp 'powerline-reset)
 962           (powerline-reset)))
 963     (error "Problem loading theme %s" x)))
 964
 965 ;;;###autoload
 966 (defun counsel-load-theme ()
 967   "Forward to `load-theme'.
 968 Usable with `ivy-resume', `ivy-next-line-and-call' and
 969 `ivy-previous-line-and-call'."
 970   (interactive)
 971   (ivy-read "Load custom theme: "
 972             (mapcar 'symbol-name
 973                     (custom-available-themes))
 974             :action #'counsel--load-theme-action))
 975
 976 (defvar rhythmbox-library)
 977 (declare-function rhythmbox-load-library "ext:helm-rhythmbox")
 978 (declare-function dbus-call-method "dbus")
 979 (declare-function dbus-get-property "dbus")
 980 (declare-function rhythmbox-song-uri "ext:helm-rhythmbox")
 981 (declare-function helm-rhythmbox-candidates "ext:helm-rhythmbox")
 982
 983 (defun counsel-rhythmbox-enqueue-song (song)
 984   "Let Rhythmbox enqueue SONG."
 985   (let ((service "org.gnome.Rhythmbox3")
 986         (path "/org/gnome/Rhythmbox3/PlayQueue")
 987         (interface "org.gnome.Rhythmbox3.PlayQueue"))
 988     (dbus-call-method :session service path interface
 989                       "AddToQueue" (rhythmbox-song-uri song))))
 990
 991 (defvar counsel-rhythmbox-history nil
 992   "History for `counsel-rhythmbox'.")
 993
 994 (defun counsel-rhythmbox-current-song ()
 995   "Return the currently playing song title."
 996   (ignore-errors
 997     (let* ((entry (dbus-get-property
 998                    :session
 999                    "org.mpris.MediaPlayer2.rhythmbox"
1000                    "/org/mpris/MediaPlayer2"
1001                    "org.mpris.MediaPlayer2.Player"
1002                    "Metadata"))
1003            (artist (caar (cadr (assoc "xesam:artist" entry))))
1004            (album (cl-caadr (assoc "xesam:album" entry)))
1005            (title (cl-caadr (assoc "xesam:title" entry))))
1006       (format "%s - %s - %s" artist album title))))
1007
1008 ;;;###autoload
1009 (defun counsel-rhythmbox ()
1010   "Choose a song from the Rhythmbox library to play or enqueue."
1011   (interactive)
1012   (unless (require 'helm-rhythmbox nil t)
1013     (error "Please install `helm-rhythmbox'"))
1014   (unless rhythmbox-library
1015     (rhythmbox-load-library)
1016     (while (null rhythmbox-library)
1017       (sit-for 0.1)))
1018   (ivy-read "Rhythmbox: "
1019             (helm-rhythmbox-candidates)
1020             :history 'counsel-rhythmbox-history
1021             :preselect (counsel-rhythmbox-current-song)
1022             :action
1023             '(1
1024               ("p" helm-rhythmbox-play-song "Play song")
1025               ("e" counsel-rhythmbox-enqueue-song "Enqueue song"))
1026             :caller 'counsel-rhythmbox))
1027
1028 (defvar counsel-org-tags nil
1029   "Store the current list of tags.")
1030
1031 (defvar org-outline-regexp)
1032 (defvar org-indent-mode)
1033 (defvar org-indent-indentation-per-level)
1034 (defvar org-tags-column)
1035 (declare-function org-get-tags-string "org")
1036 (declare-function org-move-to-column "org-compat")
1037
1038 (defun counsel-org-change-tags (tags)
1039   (let ((current (org-get-tags-string))
1040         (col (current-column))
1041         level)
1042     ;; Insert new tags at the correct column
1043     (beginning-of-line 1)
1044     (setq level (or (and (looking-at org-outline-regexp)
1045                          (- (match-end 0) (point) 1))
1046                     1))
1047     (cond
1048       ((and (equal current "") (equal tags "")))
1049       ((re-search-forward
1050         (concat "\\([ \t]*" (regexp-quote current) "\\)[ \t]*$")
1051         (point-at-eol) t)
1052        (if (equal tags "")
1053            (delete-region
1054             (match-beginning 0)
1055             (match-end 0))
1056          (goto-char (match-beginning 0))
1057          (let* ((c0 (current-column))
1058                 ;; compute offset for the case of org-indent-mode active
1059                 (di (if (bound-and-true-p org-indent-mode)
1060                         (* (1- org-indent-indentation-per-level) (1- level))
1061                       0))
1062                 (p0 (if (equal (char-before) ?*) (1+ (point)) (point)))
1063                 (tc (+ org-tags-column (if (> org-tags-column 0) (- di) di)))
1064                 (c1 (max (1+ c0) (if (> tc 0) tc (- (- tc) (string-width tags)))))
1065                 (rpl (concat (make-string (max 0 (- c1 c0)) ?\ ) tags)))
1066            (replace-match rpl t t)
1067            (and c0 indent-tabs-mode (tabify p0 (point)))
1068            tags)))
1069       (t (error "Tags alignment failed")))
1070     (org-move-to-column col)))
1071
1072 (defun counsel-org--set-tags ()
1073   (counsel-org-change-tags
1074    (if counsel-org-tags
1075        (format ":%s:"
1076                (mapconcat #'identity counsel-org-tags ":"))
1077      "")))
1078
1079 (defvar org-agenda-bulk-marked-entries)
1080
1081 (declare-function org-get-at-bol "org")
1082 (declare-function org-agenda-error "org-agenda")
1083
1084 (defun counsel-org-tag-action (x)
1085   (if (member x counsel-org-tags)
1086       (progn
1087         (setq counsel-org-tags (delete x counsel-org-tags)))
1088     (unless (equal x "")
1089       (setq counsel-org-tags (append counsel-org-tags (list x)))
1090       (unless (member x ivy--all-candidates)
1091         (setq ivy--all-candidates (append ivy--all-candidates (list x))))))
1092   (let ((prompt (counsel-org-tag-prompt)))
1093     (setf (ivy-state-prompt ivy-last) prompt)
1094     (setq ivy--prompt (concat "%-4d " prompt)))
1095   (cond ((memq this-command '(ivy-done
1096                               ivy-alt-done
1097                               ivy-immediate-done))
1098          (if (eq major-mode 'org-agenda-mode)
1099              (if (null org-agenda-bulk-marked-entries)
1100                  (let ((hdmarker (or (org-get-at-bol 'org-hd-marker)
1101                                      (org-agenda-error))))
1102                    (with-current-buffer (marker-buffer hdmarker)
1103                      (goto-char hdmarker)
1104                      (counsel-org--set-tags)))
1105                (let ((add-tags (copy-sequence counsel-org-tags)))
1106                  (dolist (m org-agenda-bulk-marked-entries)
1107                    (with-current-buffer (marker-buffer m)
1108                      (save-excursion
1109                        (goto-char m)
1110                        (setq counsel-org-tags
1111                              (delete-dups
1112                               (append (split-string (org-get-tags-string) ":" t)
1113                                       add-tags)))
1114                        (counsel-org--set-tags))))))
1115            (counsel-org--set-tags)))
1116         ((eq this-command 'ivy-call)
1117          (delete-minibuffer-contents))))
1118
1119 (defun counsel-org-tag-prompt ()
1120   (format "Tags (%s): "
1121           (mapconcat #'identity counsel-org-tags ", ")))
1122
1123 (defvar org-setting-tags)
1124 (defvar org-last-tags-completion-table)
1125 (defvar org-tag-persistent-alist)
1126 (defvar org-tag-alist)
1127 (defvar org-complete-tags-always-offer-all-agenda-tags)
1128
1129 (declare-function org-at-heading-p "org")
1130 (declare-function org-back-to-heading "org")
1131 (declare-function org-get-buffer-tags "org")
1132 (declare-function org-global-tags-completion-table "org")
1133 (declare-function org-agenda-files "org")
1134 (declare-function org-agenda-set-tags "org-agenda")
1135
1136 ;;;###autoload
1137 (defun counsel-org-tag ()
1138   "Add or remove tags in org-mode."
1139   (interactive)
1140   (save-excursion
1141     (if (eq major-mode 'org-agenda-mode)
1142         (if org-agenda-bulk-marked-entries
1143             (setq counsel-org-tags nil)
1144           (let ((hdmarker (or (org-get-at-bol 'org-hd-marker)
1145                               (org-agenda-error))))
1146             (with-current-buffer (marker-buffer hdmarker)
1147               (goto-char hdmarker)
1148               (setq counsel-org-tags
1149                     (split-string (org-get-tags-string) ":" t)))))
1150       (unless (org-at-heading-p)
1151         (org-back-to-heading t))
1152       (setq counsel-org-tags (split-string (org-get-tags-string) ":" t)))
1153     (let ((org-setting-tags t)
1154           (org-last-tags-completion-table
1155            (append org-tag-persistent-alist
1156                    (or org-tag-alist (org-get-buffer-tags))
1157                    (and
1158                     (or org-complete-tags-always-offer-all-agenda-tags
1159                         (eq major-mode 'org-agenda-mode))
1160                     (org-global-tags-completion-table
1161                      (org-agenda-files))))))
1162       (ivy-read (counsel-org-tag-prompt)
1163                 (lambda (str &rest _unused)
1164                   (delete-dups
1165                    (all-completions str 'org-tags-completion-function)))
1166                 :history 'org-tags-history
1167                 :action 'counsel-org-tag-action))))
1168
1169 ;;;###autoload
1170 (defun counsel-org-tag-agenda ()
1171   "Set tags for the current agenda item."
1172   (interactive)
1173   (let ((store (symbol-function 'org-set-tags)))
1174     (unwind-protect
1175          (progn
1176            (fset 'org-set-tags
1177                  (symbol-function 'counsel-org-tag))
1178            (org-agenda-set-tags nil nil))
1179       (fset 'org-set-tags store))))
1180
1181 (defcustom counsel-ag-base-command "ag --vimgrep %S"
1182   "Format string to use in `cousel-ag-function' to construct the
1183 command. %S will be replaced by the regex string. The default is
1184 \"ag --vimgrep %S\"."
1185   :type 'stringp
1186   :group 'ivy)
1187
1188 (defun counsel-ag-function (string)
1189   "Grep in the current directory for STRING."
1190   (if (< (length string) 3)
1191       (counsel-more-chars 3)
1192     (let ((default-directory counsel--git-grep-dir)
1193           (regex (counsel-unquote-regex-parens
1194                   (setq ivy--old-re
1195                         (ivy--regex string)))))
1196       (counsel--async-command
1197        (format counsel-ag-base-command regex))
1198       nil)))
1199
1200 ;;;###autoload
1201 (defun counsel-ag (&optional initial-input initial-directory)
1202   "Grep for a string in the current directory using ag.
1203 INITIAL-INPUT can be given as the initial minibuffer input."
1204   (interactive)
1205   (setq counsel--git-grep-dir (or initial-directory default-directory))
1206   (ivy-read "ag: " 'counsel-ag-function
1207             :initial-input initial-input
1208             :dynamic-collection t
1209             :history 'counsel-git-grep-history
1210             :action #'counsel-git-grep-action
1211             :unwind (lambda ()
1212                       (counsel-delete-process)
1213                       (swiper--cleanup))))
1214
1215 ;;;###autoload
1216 (defun counsel-grep ()
1217   "Grep for a string in the current file."
1218   (interactive)
1219   (setq counsel--git-grep-dir (buffer-file-name))
1220   (ivy-read "grep: " 'counsel-grep-function
1221             :dynamic-collection t
1222             :preselect (format "%d:%s"
1223                                (line-number-at-pos)
1224                                (buffer-substring-no-properties
1225                                 (line-beginning-position)
1226                                 (line-end-position)))
1227             :history 'counsel-git-grep-history
1228             :update-fn (lambda ()
1229                          (counsel-grep-action ivy--current))
1230             :action #'counsel-grep-action
1231             :unwind (lambda ()
1232                       (counsel-delete-process)
1233                       (swiper--cleanup))
1234             :caller 'counsel-grep))
1235
1236 (defun counsel-grep-function (string)
1237   "Grep in the current directory for STRING."
1238   (if (< (length string) 3)
1239       (counsel-more-chars 3)
1240     (let ((regex (counsel-unquote-regex-parens
1241                   (setq ivy--old-re
1242                         (ivy--regex string)))))
1243       (counsel--async-command
1244        (format "grep -nP --ignore-case '%s' %s" regex counsel--git-grep-dir))
1245       nil)))
1246
1247 (defun counsel-grep-action (x)
1248   (when (string-match "\\`\\([0-9]+\\):\\(.*\\)\\'" x)
1249     (with-ivy-window
1250       (let ((file-name counsel--git-grep-dir)
1251             (line-number (match-string-no-properties 1 x)))
1252         (find-file file-name)
1253         (goto-char (point-min))
1254         (forward-line (1- (string-to-number line-number)))
1255         (re-search-forward (ivy--regex ivy-text t) (line-end-position) t)
1256         (unless (eq ivy-exit 'done)
1257           (swiper--cleanup)
1258           (swiper--add-overlays (ivy--regex ivy-text)))))))
1259
1260 (defun counsel-recoll-function (string)
1261   "Grep in the current directory for STRING."
1262   (if (< (length string) 3)
1263       (counsel-more-chars 3)
1264     (counsel--async-command
1265      (format "recoll -t -b '%s'" string))
1266     nil))
1267
1268 ;; This command uses the recollq command line tool that comes together
1269 ;; with the recoll (the document indexing database) source:
1270 ;;     http://www.lesbonscomptes.com/recoll/download.html
1271 ;; You need to build it yourself (together with recoll):
1272 ;;     cd ./query && make && sudo cp recollq /usr/local/bin
1273 ;; You can try the GUI version of recoll with:
1274 ;;     sudo apt-get install recoll
1275 ;; Unfortunately, that does not install recollq.
1276 (defun counsel-recoll (&optional initial-input)
1277   "Search for a string in the recoll database.
1278 You'll be given a list of files that match.
1279 Selecting a file will launch `swiper' for that file.
1280 INITIAL-INPUT can be given as the initial minibuffer input."
1281   (interactive)
1282   (ivy-read "recoll: " 'counsel-recoll-function
1283             :initial-input initial-input
1284             :dynamic-collection t
1285             :history 'counsel-git-grep-history
1286             :action (lambda (x)
1287                       (when (string-match "file://\\(.*\\)\\'" x)
1288                         (let ((file-name (match-string 1 x)))
1289                           (find-file file-name)
1290                           (unless (string-match "pdf$" x)
1291                             (swiper ivy-text)))))))
1292
1293 (defvar tmm-km-list nil)
1294 (declare-function tmm-get-keymap "tmm")
1295 (declare-function tmm--completion-table "tmm")
1296 (declare-function tmm-get-keybind "tmm")
1297
1298 (defun counsel-tmm-prompt (menu)
1299   "Select and call an item from the MENU keymap."
1300   (let (out
1301         choice
1302         chosen-string)
1303     (setq tmm-km-list nil)
1304     (map-keymap (lambda (k v) (tmm-get-keymap (cons k v))) menu)
1305     (setq tmm-km-list (nreverse tmm-km-list))
1306     (setq out (ivy-read "Menu bar: " (tmm--completion-table tmm-km-list)
1307                         :require-match t
1308                         :sort nil))
1309     (setq choice (cdr (assoc out tmm-km-list)))
1310     (setq chosen-string (car choice))
1311     (setq choice (cdr choice))
1312     (cond ((keymapp choice)
1313            (counsel-tmm-prompt choice))
1314           ((and choice chosen-string)
1315            (setq last-command-event chosen-string)
1316            (call-interactively choice)))))
1317
1318 (defvar tmm-table-undef)
1319 (defun counsel-tmm ()
1320   "Text-mode emulation of looking and choosing from a menubar."
1321   (interactive)
1322   (require 'tmm)
1323   (run-hooks 'menu-bar-update-hook)
1324   (setq tmm-table-undef nil)
1325   (counsel-tmm-prompt (tmm-get-keybind [menu-bar])))
1326
1327 (defcustom counsel-yank-pop-truncate-radius 2
1328   "When non-nil, truncate the display of long strings."
1329   :type 'integer
1330   :group 'ivy)
1331
1332 (defun counsel--yank-pop-truncate (str)
1333   (condition-case nil
1334       (let* ((lines (split-string str "\n" t))
1335              (n (length lines))
1336              (first-match (cl-position-if
1337                            (lambda (s) (string-match ivy--old-re s))
1338                            lines))
1339              (beg (max 0 (- first-match
1340                             counsel-yank-pop-truncate-radius)))
1341              (end (min n (+ first-match
1342                             counsel-yank-pop-truncate-radius
1343                             1)))
1344              (seq (cl-subseq lines beg end)))
1345         (if (null first-match)
1346             (error "Could not match %s" str)
1347           (when (> beg 0)
1348             (setcar seq (concat "[...] " (car seq))))
1349           (when (< end n)
1350             (setcar (last seq)
1351                     (concat (car (last seq)) " [...]")))
1352           (mapconcat #'identity seq "\n")))
1353     (error str)))
1354
1355 (defun counsel--yank-pop-format-function (cand-pairs)
1356   (ivy--format-function-generic
1357    (lambda (str _extra)
1358      (mapconcat
1359       (lambda (s)
1360         (ivy--add-face s 'ivy-current-match))
1361       (split-string
1362        (counsel--yank-pop-truncate str) "\n" t)
1363       "\n"))
1364    (lambda (str _extra)
1365      (counsel--yank-pop-truncate str))
1366    cand-pairs
1367    "\n"))
1368
1369 ;;;###autoload
1370 (defun counsel-yank-pop ()
1371   "Ivy replacement for `yank-pop'."
1372   (interactive)
1373   (if (eq last-command 'yank)
1374       (progn
1375         (setq ivy-completion-end (point))
1376         (setq ivy-completion-beg
1377               (save-excursion
1378                 (search-backward (car kill-ring))
1379                 (point))))
1380     (setq ivy-completion-beg (point))
1381     (setq ivy-completion-end (point)))
1382   (let ((candidates (cl-remove-if
1383                      (lambda (s)
1384                        (or (< (length s) 3)
1385                            (string-match "\\`[\n[:blank:]]+\\'" s)))
1386                      (delete-dups kill-ring))))
1387     (let ((ivy-format-function #'counsel--yank-pop-format-function)
1388           (ivy-height 5))
1389       (ivy-read "kill-ring: " candidates
1390                 :action 'counsel-yank-pop-action))))
1391
1392 (defun counsel-yank-pop-action (s)
1393   "Insert S into the buffer, overwriting the previous yank."
1394   (with-ivy-window
1395     (delete-region ivy-completion-beg
1396                    ivy-completion-end)
1397     (insert (substring-no-properties s))
1398     (setq ivy-completion-end (point))))
1399
1400 (defvar imenu-auto-rescan)
1401 (declare-function imenu--subalist-p "imenu")
1402 (declare-function imenu--make-index-alist "imenu")
1403
1404 (defun counsel-imenu-get-candidates-from (alist &optional prefix)
1405   "Create a list of (key . value) from ALIST.
1406 PREFIX is used to create the key."
1407   (cl-mapcan (lambda (elm)
1408                (if (imenu--subalist-p elm)
1409                    (counsel-imenu-get-candidates-from
1410                     (cl-loop for (e . v) in (cdr elm) collect
1411                              (cons e (if (integerp v) (copy-marker v) v)))
1412                     ;; pass the prefix to next recursive call
1413                     (concat prefix (if prefix ".") (car elm)))
1414                  (let ((key (concat prefix (if prefix ".") (car elm))))
1415                    (list (cons key
1416                                ;; create a imenu candidate here
1417                                (cons key (if (overlayp (cdr elm))
1418                                              (overlay-start (cdr elm))
1419                                            (cdr elm))))))))
1420              alist))
1421
1422 ;;;###autoload
1423 (defun counsel-imenu ()
1424   "Jump to a buffer position indexed by imenu."
1425   (interactive)
1426   (unless (featurep 'imenu)
1427     (require 'imenu nil t))
1428   (let* ((imenu-auto-rescan t)
1429          (items (imenu--make-index-alist t))
1430          (items (delete (assoc "*Rescan*" items) items)))
1431     (ivy-read "imenu items:" (counsel-imenu-get-candidates-from items)
1432               :action (lambda (candidate)
1433                         (with-ivy-window
1434                           ;; In org-mode, (imenu candidate) will expand child node
1435                           ;; after jump to the candidate position
1436                           (imenu candidate))))))
1437
1438 (defun counsel--descbinds-cands ()
1439   (let ((buffer (current-buffer))
1440         (re-exclude (regexp-opt
1441                      '("<vertical-line>" "<bottom-divider>" "<right-divider>"
1442                        "<mode-line>" "<C-down-mouse-2>" "<left-fringe>"
1443                        "<right-fringe>" "<header-line>"
1444                        "<vertical-scroll-bar>" "<horizontal-scroll-bar>")))
1445         res)
1446     (with-temp-buffer
1447       (let ((indent-tabs-mode t))
1448         (describe-buffer-bindings buffer))
1449       (goto-char (point-min))
1450       ;; Skip the "Key translations" section
1451       (re-search-forward "\f")
1452       (forward-char 1)
1453       (while (not (eobp))
1454         (when (looking-at "^\\([^\t\n]+\\)\t+\\(.*\\)$")
1455           (let ((key (match-string 1))
1456                 (fun (match-string 2))
1457                 cmd)
1458             (unless (or (member fun '("??" "self-insert-command"))
1459                         (string-match re-exclude key)
1460                         (not (or (commandp (setq cmd (intern-soft fun)))
1461                                  (member fun '("Prefix Command")))))
1462               (push
1463                (cons (format
1464                       "%-15s %s"
1465                       (propertize key 'face 'font-lock-builtin-face)
1466                       fun)
1467                      (cons key cmd))
1468                res))))
1469         (forward-line 1)))
1470     (nreverse res)))
1471
1472 (defvar counsel-descbinds-history nil
1473   "History for `counsel-descbinds'.")
1474
1475 (defun counsel-descbinds-action-describe (x)
1476   (let ((cmd (cdr x)))
1477     (describe-function cmd)))
1478
1479 (defun counsel-descbinds-action-find (x)
1480   (let ((cmd (cdr x)))
1481     (counsel--find-symbol (symbol-name cmd))))
1482
1483 (defun counsel-descbinds-action-info (x)
1484   (let ((cmd (cdr x)))
1485     (counsel-info-lookup-symbol (symbol-name cmd))))
1486
1487 ;;;###autoload
1488 (defun counsel-descbinds ()
1489   "Show a list of all defined keys, and their definitions.
1490 Describe the selected candidate."
1491   (interactive)
1492   (ivy-read "Bindings: " (counsel--descbinds-cands)
1493             :action #'counsel-descbinds-action-describe
1494             :caller 'counsel-descbinds
1495             :history 'counsel-descbinds-history))
1496
1497 (ivy-set-actions
1498  'counsel-descbinds
1499  '(("d" counsel-descbinds-action-find "definition")
1500    ("i" counsel-descbinds-action-info "info")))
1501
1502 (defun counsel-list-processes-action-delete (x)
1503   (delete-process x)
1504   (setf (ivy-state-collection ivy-last)
1505         (setq ivy--all-candidates
1506               (delete x ivy--all-candidates))))
1507
1508 (defun counsel-list-processes-action-switch (x)
1509   (if (get-buffer x)
1510       (switch-to-buffer x)
1511     (message "Process %s doesn't have a buffer" x)))
1512
1513 ;;;###autoload
1514 (defun counsel-list-processes ()
1515   "Offer completion for `process-list'
1516 The default action deletes the selected process.
1517 An extra action allows to switch to the process buffer."
1518   (interactive)
1519   (list-processes--refresh)
1520   (ivy-read "Process: " (mapcar #'process-name (process-list))
1521             :require-match t
1522             :action
1523             '(1
1524               ("o" counsel-list-processes-action-delete "kill")
1525               ("s" counsel-list-processes-action-switch "switch"))))
1526
1527 (defun counsel-git-stash-kill-action (x)
1528   (when (string-match "\\([^:]+\\):" x)
1529     (kill-new (message (format "git stash apply %s" (match-string 1 x))))))
1530
1531 ;;;###autoload
1532 (defun counsel-git-stash ()
1533   "Search through all available git stashes."
1534   (interactive)
1535   (let ((dir (locate-dominating-file default-directory ".git")))
1536     (if (null dir)
1537         (error "Not in a git repository")
1538       (let ((cands (split-string (shell-command-to-string
1539                                   "IFS=$'\n'
1540 for i in `git stash list --format=\"%gd\"`; do
1541     git stash show -p $i | grep -H --label=\"$i\" \"$1\"
1542 done") "\n" t)))
1543         (ivy-read "git stash: " cands
1544                   :action 'counsel-git-stash-kill-action)))))
1545 (provide 'counsel)
1546
1547 ;;; counsel.el ends here