lisp/progmodes/bat-mode.el

   1 ;;; bat-mode.el --- Major mode for editing DOS/Windows scripts
   2
   3 ;; Copyright (C) 2003, 2008-2014 Free Software Foundation, Inc.
   4
   5 ;; Author: Arni Magnusson <arnima@hafro.is>
   6 ;; Keywords: languages
   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 <http://www.gnu.org/licenses/>.
  22
  23 ;;; Commentary:
  24 ;;
  25 ;; Major mode for editing DOS/Windows scripts (batch files).  Provides syntax
  26 ;; highlighting, a basic template, access to DOS help pages, imenu/outline
  27 ;; navigation, and the ability to run scripts from within Emacs.  The syntax
  28 ;; groups for highlighting are:
  29 ;;
  30 ;; Face                          Example
  31 ;; bat-label-face                :LABEL
  32 ;; font-lock-comment-face        rem
  33 ;; font-lock-builtin-face        copy
  34 ;; font-lock-keyword-face        goto
  35 ;; font-lock-warning-face        cp
  36 ;; font-lock-constant-face       [call] prog
  37 ;; font-lock-variable-name-face  %var%
  38 ;; font-lock-type-face           -option
  39 ;;
  40 ;; Usage:
  41 ;;
  42 ;; See documentation of function `bat-mode'.
  43 ;;
  44 ;; Separate package `dos-indent' (Matthew Fidler) provides rudimentary
  45 ;; indentation, see http://www.emacswiki.org/emacs/dos-indent.el.
  46 ;;
  47 ;; Acknowledgements:
  48 ;;
  49 ;; Inspired by `batch-mode' (Agnar Renolen) and `cmd-mode' (Tadamegu Furukawa).
  50
  51 ;;; Code:
  52
  53 ;; 1  Preamble
  54
  55 (defgroup bat-mode nil
  56   "Major mode for editing DOS/Windows batch files."
  57   :link '(custom-group-link :tag "Font Lock Faces group" font-lock-faces)
  58   :group 'languages)
  59
  60 ;; 2  User variables
  61
  62 (defface bat-label-face '((t :weight bold))
  63   "Font Lock mode face used to highlight labels in batch files.")
  64
  65 ;; 3  Internal variables
  66
  67 (defvar bat-font-lock-keywords
  68   (eval-when-compile
  69     (let ((COMMANDS
  70            '("assoc" "at" "attrib" "cd" "cls" "color" "copy" "date" "del" "dir"
  71              "doskey" "echo" "endlocal" "erase" "fc" "find" "findstr" "format"
  72              "ftype" "label" "md" "mkdir" "more" "move" "net" "path" "pause"
  73              "popd" "prompt" "pushd" "rd" "ren" "rename" "replace" "rmdir" "set"
  74              "setlocal" "shift" "sort" "subst" "time" "title" "tree" "type"
  75              "ver" "vol" "xcopy"))
  76           (CONTROLFLOW
  77            '("call" "cmd" "defined" "do" "else" "equ" "exist" "exit" "for" "geq"
  78              "goto" "gtr" "if" "in" "leq" "lss" "neq" "not" "start"))
  79           (UNIX
  80            '("bash" "cat" "cp" "fgrep" "grep" "ls" "sed" "sh" "mv" "rm")))
  81       `(("\\<_\\(call\\|goto\\)\\_>[ \t]+%?\\([A-Za-z0-9-_\\:.]+\\)%?"
  82          (2 font-lock-constant-face t))
  83         ("^:[^:].*"
  84          . 'bat-label-face)
  85         ("\\<_\\(defined\\|set\\)\\_>[ \t]*\\(\\w+\\)"
  86          (2 font-lock-variable-name-face))
  87         ("%\\(\\w+\\)%?"
  88          (1 font-lock-variable-name-face))
  89         ("!\\(\\w+\\)!?"                ; delayed-expansion !variable!
  90          (1 font-lock-variable-name-face))
  91         ("[ =][-/]+\\(\\w+\\)"
  92          (1 font-lock-type-face append))
  93         (,(concat "\\_<" (regexp-opt COMMANDS) "\\_>") . font-lock-builtin-face)
  94         (,(concat "\\_<" (regexp-opt CONTROLFLOW) "\\_>")
  95          . font-lock-keyword-face)
  96         (,(concat "\\_<" (regexp-opt UNIX) "\\_>")
  97          . font-lock-warning-face)))))
  98
  99 (defvar bat-menu
 100   '("Bat"
 101     ["Run" bat-run :help "Run script"]
 102     ["Run with Args" bat-run-args :help "Run script with args"]
 103     "--"
 104     ["Imenu" imenu :help "Navigate with imenu"]
 105     "--"
 106     ["Template" bat-template :help "Insert template"]
 107     "--"
 108     ["Help (Command)" bat-cmd-help :help "Show help page for DOS command"]))
 109
 110 (defvar bat-mode-map
 111   (let ((map (make-sparse-keymap)))
 112     (easy-menu-define nil map nil bat-menu)
 113     (define-key map [?\C-c ?\C-/] 'bat-cmd-help) ;FIXME: Why not C-c C-? ?
 114     (define-key map [?\C-c ?\C-a] 'bat-run-args)
 115     (define-key map [?\C-c ?\C-c] 'bat-run)
 116     (define-key map [?\C-c ?\C-t] 'bat-template)
 117     (define-key map [?\C-c ?\C-v] 'bat-run)
 118     map))
 119
 120 (defvar bat-mode-syntax-table
 121   (let ((table (make-syntax-table)))
 122     (modify-syntax-entry ?\n ">" table)
 123     (modify-syntax-entry ?\" "\"" table)
 124     ;; Beware: `w' should not be used for non-alphabetic chars.
 125     (modify-syntax-entry ?~ "_" table)
 126     (modify-syntax-entry ?% "." table)
 127     (modify-syntax-entry ?- "_" table)
 128     (modify-syntax-entry ?_ "_" table)
 129     ;; FIXME: { and } can appear in identifiers?  Really?
 130     (modify-syntax-entry ?{ "_" table)
 131     (modify-syntax-entry ?} "_" table)
 132     (modify-syntax-entry ?\\ "." table)
 133     table))
 134
 135 (defconst bat--syntax-propertize
 136   (syntax-propertize-rules
 137    ("^[ \t]*\\(?:\\(@?r\\)em\\_>\\|\\(?1::\\):\\).*" (1 "<"))))
 138
 139 ;; 4  User functions
 140
 141 (defun bat-cmd-help (cmd)
 142   "Show help for batch file command CMD."
 143   (interactive "sHelp: ")
 144   (if (string-equal cmd "net")
 145       ;; FIXME: liable to quoting nightmare.  Use call-process?
 146       (shell-command "net /?") (shell-command (concat "help " cmd))))
 147
 148 (defun bat-run ()
 149   "Run a batch file."
 150   (interactive)
 151   ;; FIXME: liable to quoting nightmare.  Use call/start-process?
 152   (save-buffer) (shell-command buffer-file-name))
 153
 154 (defun bat-run-args (args)
 155   "Run a batch file with ARGS."
 156   (interactive "sArgs: ")
 157   ;; FIXME: Use `compile'?
 158   (shell-command (concat buffer-file-name " " args)))
 159
 160 (defun bat-template ()
 161   "Insert minimal batch file template."
 162   (interactive)
 163   (goto-char (point-min)) (insert "@echo off\nsetlocal\n\n"))
 164
 165 ;;;###autoload
 166 (add-to-list 'auto-mode-alist '("\\.\\(bat\\|cmd\\)\\'" . bat-mode))
 167
 168 ;; 5  Main function
 169
 170 ;;;###autoload
 171 (define-derived-mode bat-mode prog-mode "Bat"
 172   "Major mode for editing DOS/Windows batch files.\n
 173 Start a new script from `bat-template'.  Read help pages for DOS commands
 174 with `bat-cmd-help'.  Navigate between sections using `imenu'.
 175 Run script using `bat-run' and `bat-run-args'.\n
 176 \\{bat-mode-map}"
 177   (setq-local comment-start "rem ")
 178   (setq-local syntax-propertize-function bat--syntax-propertize)
 179   (setq-local font-lock-defaults
 180        '(bat-font-lock-keywords nil t)) ; case-insensitive keywords
 181   (setq-local imenu-generic-expression '((nil "^:[^:].*" 0)))
 182   (setq-local outline-regexp ":[^:]"))
 183
 184 (provide 'bat-mode)
 185
 186 ;;; bat-mode.el ends here