lisp/pcmpl-cvs.el

   1 ;;; pcmpl-cvs.el --- functions for dealing with cvs completions
   2
   3 ;; Copyright (C) 1999-2018 Free Software Foundation, Inc.
   4
   5 ;; Author: John Wiegley <johnw@gnu.org>
   6 ;; Package: pcomplete
   7
   8 ;; This file is part of GNU Emacs.
   9
  10 ;; GNU Emacs is free software: you can redistribute it and/or modify
  11 ;; it under the terms of the GNU General Public License as published by
  12 ;; the Free Software Foundation, either version 3 of the License, or
  13 ;; (at your option) any later version.
  14
  15 ;; GNU Emacs is distributed in the hope that it will be useful,
  16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 ;; GNU General Public License for more details.
  19
  20 ;; You should have received a copy of the GNU General Public License
  21 ;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
  22
  23 ;;; Commentary:
  24
  25 ;; These functions provide completion rules for the `cvs' tool.
  26
  27 ;;; Code:
  28
  29 (provide 'pcmpl-cvs)
  30
  31 (require 'pcomplete)
  32 (require 'executable)
  33
  34 (defgroup pcmpl-cvs nil
  35   "Functions for dealing with CVS completions."
  36   :group 'pcomplete)
  37
  38 ;; User Variables:
  39
  40 (defcustom pcmpl-cvs-binary (or (executable-find "cvs") "cvs")
  41   "The full path of the `cvs' binary."
  42   :type 'file
  43   :group 'pcmpl-cvs)
  44
  45 ;; Functions:
  46
  47 ;;;###autoload
  48 (defun pcomplete/cvs ()
  49   "Completion rules for the `cvs' command."
  50   (let ((pcomplete-help "(cvs)Invoking CVS"))
  51     (pcomplete-opt "HQqrwlntvfab/T/e*d/z?s")
  52     (pcomplete-here* (pcmpl-cvs-commands))
  53     (cond ((pcomplete-test "add")
  54            (setq pcomplete-help "(cvs)Adding files")
  55            (pcomplete-opt "k?m?")
  56            (while (pcomplete-here (pcmpl-cvs-entries '(??)))))
  57           ((pcomplete-test "remove")
  58            (setq pcomplete-help "(cvs)Removing files")
  59            (pcomplete-opt "flR")
  60            (while (pcomplete-here (pcmpl-cvs-entries '(?U)))))
  61           ((pcomplete-test "init")
  62            (setq pcomplete-help "(cvs)Creating a repository"))
  63           ((pcomplete-test '("login" "logout"))
  64            (setq pcomplete-help "(cvs)Password authentication client"))
  65           ((pcomplete-test "import")
  66            (setq pcomplete-help "(cvs)import")
  67            (pcomplete-opt "dk?I(pcmpl-cvs-entries '(??))b?m?W?"))
  68           ((pcomplete-test "checkout")
  69            (setq pcomplete-help "(cvs)checkout")
  70            (pcomplete-opt "ANPRcflnpsr?D?d/k?j?")
  71            (pcomplete-here (pcmpl-cvs-modules)))
  72           ((pcomplete-test "rtag")
  73            (setq pcomplete-help "(cvs)Creating a branch")
  74            (pcomplete-opt "aflRndbr?DF")
  75            (pcomplete-here (pcmpl-cvs-modules)))
  76           ((pcomplete-test "release")
  77            (setq pcomplete-help "(cvs)release")
  78            (pcomplete-opt "d")
  79            (while (pcomplete-here (pcomplete-dirs))))
  80           ((pcomplete-test "export")
  81            (setq pcomplete-help "(cvs)export")
  82            (pcomplete-opt "NflRnr?D?d/k?")
  83            (pcomplete-here (pcmpl-cvs-modules)))
  84           ((pcomplete-test "commit")
  85            (setq pcomplete-help "(cvs)commit files")
  86            (pcomplete-opt "nRlfF.m?r(pcmpl-cvs-tags '(?M ?R ?A))")
  87            (while (pcomplete-here (pcmpl-cvs-entries '(?M ?R ?A)))))
  88           ((pcomplete-test "diff")
  89            (setq pcomplete-help "(cvs)Viewing differences")
  90            (let ((opt-index pcomplete-index)
  91                  saw-backdate)
  92              (pcomplete-opt "lRD?Nr(pcmpl-cvs-tags)")
  93              (while (< opt-index pcomplete-index)
  94                (if (pcomplete-match "^-[Dr]" (- pcomplete-index opt-index))
  95                    (setq saw-backdate t opt-index pcomplete-index)
  96                  (setq opt-index (1+ opt-index))))
  97              (while (pcomplete-here
  98                      (pcmpl-cvs-entries (unless saw-backdate '(?M)))))))
  99           ((pcomplete-test "unedit")
 100            (setq pcomplete-help "(cvs)Editing files")
 101            (pcomplete-opt "lR")
 102            (while (pcomplete-here (pcmpl-cvs-entries '(?M ?R ?A)))))
 103           ((pcomplete-test "update")
 104            (setq pcomplete-help "(cvs)update")
 105            (pcomplete-opt
 106             (concat "APdflRpk?r(pcmpl-cvs-tags '(?U ?P))D?"
 107                     "j(pcmpl-cvs-tags '(?U ?P))"
 108                     "I(pcmpl-cvs-entries '(??))W?"))
 109            (while (pcomplete-here (pcmpl-cvs-entries '(?U ?P)))))
 110           ((pcomplete-test "status")
 111            (setq pcomplete-help "(cvs)File status")
 112            (pcomplete-opt "vlR")
 113            (while (pcomplete-here (pcmpl-cvs-entries))))
 114           (t
 115            (while (pcomplete-here (pcmpl-cvs-entries)))))))
 116
 117 (defun pcmpl-cvs-commands ()
 118   "Return a list of available CVS commands."
 119   (with-temp-buffer
 120     (call-process pcmpl-cvs-binary nil t nil "--help-commands")
 121     (goto-char (point-min))
 122     (let (cmds)
 123       (while (re-search-forward "^\\s-+\\([a-z]+\\)" nil t)
 124         (setq cmds (cons (match-string 1) cmds)))
 125       (pcomplete-uniqify-list cmds))))
 126
 127 (defun pcmpl-cvs-modules ()
 128   "Return a list of available modules under CVS."
 129   (with-temp-buffer
 130     (call-process pcmpl-cvs-binary nil t nil "checkout" "-c")
 131     (goto-char (point-min))
 132     (let (entries)
 133       (while (re-search-forward "\\(\\S-+\\)$" nil t)
 134         (setq entries (cons (match-string 1) entries)))
 135       (pcomplete-uniqify-list entries))))
 136
 137 (defun pcmpl-cvs-tags (&optional opers)
 138   "Return all the tags which could apply to the files related to OPERS."
 139   (let ((entries (pcmpl-cvs-entries opers))
 140         tags)
 141     (with-temp-buffer
 142       (apply 'call-process pcmpl-cvs-binary nil t nil
 143              "status" "-v" entries)
 144       (goto-char (point-min))
 145       (while (re-search-forward "Existing Tags:" nil t)
 146         (forward-line)
 147         (while (not (looking-at "^$"))
 148           (unless (looking-at "^\\s-+\\(\\S-+\\)\\s-+")
 149             (error "Error in output from `cvs status -v'"))
 150           (setq tags (cons (match-string 1) tags))
 151           (forward-line))))
 152     (pcomplete-uniqify-list tags)))
 153
 154 (defun pcmpl-cvs-entries (&optional opers)
 155   "Return the Entries for the current directory.
 156 If OPERS is a list of characters, return entries for which that
 157 operation character applies, as displayed by `cvs -n update'."
 158   (let* ((arg (pcomplete-arg))
 159          (dir (file-name-as-directory
 160                (or (file-name-directory arg) "")))
 161          (nondir (or (file-name-nondirectory arg) ""))
 162          entries)
 163     (if opers
 164         (with-temp-buffer
 165           (and dir (cd dir))
 166           (call-process pcmpl-cvs-binary nil t nil
 167                         "-q" "-n" "-f" "update") ; "-l")
 168           (goto-char (point-min))
 169           (while (re-search-forward "^\\(.\\) \\(.+\\)$" nil t)
 170             (if (memq (string-to-char (match-string 1)) opers)
 171                 (setq entries (cons (match-string 2) entries)))))
 172       (when (file-exists-p (expand-file-name "CVS/Entries" dir))
 173         (with-temp-buffer
 174           (insert-file-contents (expand-file-name "CVS/Entries" dir))
 175           (goto-char (point-min))
 176           (while (not (eobp))
 177             ;; Normal file: /NAME   -> "" "NAME"
 178             ;; Directory  : D/NAME  -> "D" "NAME"
 179             (let* ((fields (split-string (buffer-substring
 180                                           (line-beginning-position)
 181                                           (line-end-position))
 182                                          "/"))
 183                    (text (nth 1 fields)))
 184               (when text
 185                 (if (string= (nth 0 fields) "D")
 186                     (setq text (file-name-as-directory text)))
 187                 (setq entries (cons text entries))))
 188             (forward-line)))))
 189     (setq pcomplete-stub nondir)
 190     (pcomplete-uniqify-list entries)))
 191
 192 ;;; pcmpl-cvs.el ends here