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;;; pcmpl-cvs.el --- functions for dealing with cvs completions -*- lexical-binding: t -*-
;; Copyright (C) 1999-2024 Free Software Foundation, Inc.
;; Author: John Wiegley <johnw@gnu.org>
;; Package: pcomplete
;; This file is part of GNU Emacs.
;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
;;; Commentary:
;; These functions provide completion rules for the `cvs' tool.
;;; Code:
(provide 'pcmpl-cvs)
(require 'pcomplete)
(defgroup pcmpl-cvs nil
"Functions for dealing with CVS completions."
:group 'pcomplete)
;; User Variables:
(defcustom pcmpl-cvs-binary (or (executable-find "cvs") "cvs")
"The full path of the `cvs' binary."
:type 'file)
;; Functions:
;;;###autoload
(defun pcomplete/cvs ()
"Completion rules for the `cvs' command."
(let ((pcomplete-help "(cvs)Invoking CVS"))
(pcomplete-opt "HQqrwlntvfab/T/e*d/z?s")
(pcomplete-here* (pcmpl-cvs-commands))
(cond ((pcomplete-test "add")
(setq pcomplete-help "(cvs)Adding files")
(pcomplete-opt "k?m?")
(while (pcomplete-here (pcmpl-cvs-entries '(??)))))
((pcomplete-test "remove")
(setq pcomplete-help "(cvs)Removing files")
(pcomplete-opt "flR")
(while (pcomplete-here (pcmpl-cvs-entries '(?U)))))
((pcomplete-test "init")
(setq pcomplete-help "(cvs)Creating a repository"))
((pcomplete-test '("login" "logout"))
(setq pcomplete-help "(cvs)Password authentication client"))
((pcomplete-test "import")
(setq pcomplete-help "(cvs)import")
(pcomplete-opt "dk?I(pcmpl-cvs-entries '(??))b?m?W?"))
((pcomplete-test "checkout")
(setq pcomplete-help "(cvs)checkout")
(pcomplete-opt "ANPRcflnpsr?D?d/k?j?")
(pcomplete-here (pcmpl-cvs-modules)))
((pcomplete-test "rtag")
(setq pcomplete-help "(cvs)Creating a branch")
(pcomplete-opt "aflRndbr?DF")
(pcomplete-here (pcmpl-cvs-modules)))
((pcomplete-test "release")
(setq pcomplete-help "(cvs)release")
(pcomplete-opt "d")
(while (pcomplete-here (pcomplete-dirs))))
((pcomplete-test "export")
(setq pcomplete-help "(cvs)export")
(pcomplete-opt "NflRnr?D?d/k?")
(pcomplete-here (pcmpl-cvs-modules)))
((pcomplete-test "commit")
(setq pcomplete-help "(cvs)commit files")
(pcomplete-opt "nRlfF.m?r(pcmpl-cvs-tags '(?M ?R ?A))")
(while (pcomplete-here (pcmpl-cvs-entries '(?M ?R ?A)))))
((pcomplete-test "diff")
(setq pcomplete-help "(cvs)Viewing differences")
(let ((opt-index pcomplete-index)
saw-backdate)
(pcomplete-opt "lRD?Nr(pcmpl-cvs-tags)")
(while (< opt-index pcomplete-index)
(if (pcomplete-match "^-[Dr]" (- pcomplete-index opt-index))
(setq saw-backdate t opt-index pcomplete-index)
(setq opt-index (1+ opt-index))))
(while (pcomplete-here
(pcmpl-cvs-entries (unless saw-backdate '(?M)))))))
((pcomplete-test "unedit")
(setq pcomplete-help "(cvs)Editing files")
(pcomplete-opt "lR")
(while (pcomplete-here (pcmpl-cvs-entries '(?M ?R ?A)))))
((pcomplete-test "update")
(setq pcomplete-help "(cvs)update")
(pcomplete-opt
(concat "APdflRpk?r(pcmpl-cvs-tags '(?U ?P))D?"
"j(pcmpl-cvs-tags '(?U ?P))"
"I(pcmpl-cvs-entries '(??))W?"))
(while (pcomplete-here (pcmpl-cvs-entries '(?U ?P)))))
((pcomplete-test "status")
(setq pcomplete-help "(cvs)File status")
(pcomplete-opt "vlR")
(while (pcomplete-here (pcmpl-cvs-entries))))
(t
(while (pcomplete-here (pcmpl-cvs-entries)))))))
(defun pcmpl-cvs-commands ()
"Return a list of available CVS commands."
(with-temp-buffer
(call-process pcmpl-cvs-binary nil t nil "--help-commands")
(goto-char (point-min))
(let (cmds)
(while (re-search-forward "^\\s-+\\([a-z]+\\)" nil t)
(setq cmds (cons (match-string 1) cmds)))
(pcomplete-uniquify-list cmds))))
(defun pcmpl-cvs-modules ()
"Return a list of available modules under CVS."
(with-temp-buffer
(call-process pcmpl-cvs-binary nil t nil "checkout" "-c")
(goto-char (point-min))
(let (entries)
(while (re-search-forward "\\(\\S-+\\)$" nil t)
(setq entries (cons (match-string 1) entries)))
(pcomplete-uniquify-list entries))))
(defun pcmpl-cvs-tags (&optional opers)
"Return all the tags which could apply to the files related to OPERS."
(let ((entries (pcmpl-cvs-entries opers))
tags)
(with-temp-buffer
(apply #'call-process pcmpl-cvs-binary nil t nil
"status" "-v" entries)
(goto-char (point-min))
(while (re-search-forward "Existing Tags:" nil t)
(forward-line)
(while (not (looking-at "^$"))
(unless (looking-at "^\\s-+\\(\\S-+\\)\\s-+")
(error "Error in output from `cvs status -v'"))
(setq tags (cons (match-string 1) tags))
(forward-line))))
(pcomplete-uniquify-list tags)))
(defun pcmpl-cvs-entries (&optional opers)
"Return the Entries for the current directory.
If OPERS is a list of characters, return entries for which that
operation character applies, as displayed by `cvs -n update'."
(let* ((arg (pcomplete-arg))
(dir (file-name-as-directory
(or (file-name-directory arg) "")))
(nondir (or (file-name-nondirectory arg) ""))
entries)
(if opers
(with-temp-buffer
(and dir (cd dir))
(call-process pcmpl-cvs-binary nil t nil
"-q" "-n" "-f" "update") ; "-l")
(goto-char (point-min))
(while (re-search-forward "^\\(.\\) \\(.+\\)$" nil t)
(if (memq (string-to-char (match-string 1)) opers)
(setq entries (cons (match-string 2) entries)))))
(when (file-exists-p (expand-file-name "CVS/Entries" dir))
(with-temp-buffer
(insert-file-contents (expand-file-name "CVS/Entries" dir))
(goto-char (point-min))
(while (not (eobp))
;; Normal file: /NAME -> "" "NAME"
;; Directory : D/NAME -> "D" "NAME"
(let* ((fields (split-string (buffer-substring
(line-beginning-position)
(line-end-position))
"/"))
(text (nth 1 fields)))
(when text
(if (string= (nth 0 fields) "D")
(setq text (file-name-as-directory text)))
(setq entries (cons text entries))))
(forward-line)))))
(setq pcomplete-stub nondir)
(pcomplete-uniquify-list entries)))
;;; pcmpl-cvs.el ends here
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