mirror of
https://github.com/ascii-boxes/boxes.git
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155 lines
5.6 KiB
EmacsLisp
155 lines
5.6 KiB
EmacsLisp
;;; boxes.el --- ASCII boxes unlimited! -*- lexical-binding: t -*-
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;; Copyright (C) 1999, 2001, 2006 Jason L. Shiffer
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;; Author: Jason L. Shiffer <jshiffer@zerotao.com>
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;; Maintainer: Jason L. Shiffer <jshiffer@zerotao.com>
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;; Version: 0.0
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;; Package-Requires: ((emacs "24.3"))
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;; Keywords: extensions
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;; URL: https://boxes.thomasjensen.com
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;; Created: 1999-10-30
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;; Others:
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;; Vijay Lakshminarayanan: support for choosing boxes comment by current buffer mode.
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;; Mike Woolley: Customise and packaging support.
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;; boxes - Command line filter to draw/remove ASCII boxes around text
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;; Copyright (c) 1999-2024 Thomas Jensen and the boxes contributors
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;;
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;; This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public
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;; License, version 3, as published by the Free Software Foundation.
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;; This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
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;; warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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;; details.
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;; You should have received a copy of the GNU General Public License along with this program.
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;; If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;; This program provides an interface to the boxes application which can be found at
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;; https://boxes.thomasjensen.com/
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;; To use this, add the following lines to your startup file:
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;;
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;; (global-set-key "\C-cb" 'boxes-command-on-region)
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;; (global-set-key "\C-cq" 'boxes-create)
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;; (global-set-key "\C-cr" 'boxes-remove)
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;;
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;; If you didn't install the package version then you will also need to put this file somewhere in your load path and
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;; add these lines to your startup file:
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;;
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;; (autoload 'boxes-command-on-region "boxes" nil t)
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;; (autoload 'boxes-remove "boxes" nil t)
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;; (autoload 'boxes-create "boxes" nil t)
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;;
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;; If `use-package' is installed you can automatically install the boxes binary and elisp package with:
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;;
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;; (use-package boxes
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;; :ensure t
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;; :ensure-system-package boxes
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;; :bind (("C-c b" . boxes-command-on-region)
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;; ("C-c q" . boxes-create)
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;; ("C-c r" . boxes-remove)))
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;;; Code:
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(defgroup boxes nil
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"ASCII boxes unlimited!"
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:prefix "boxes-"
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:group 'convenience)
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(defcustom boxes-command "boxes"
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"The boxes command."
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:type 'string
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:group 'boxes)
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(defcustom boxes-args ""
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"Additional arguments to the boxes command."
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:type 'string
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:group 'boxes)
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(defcustom boxes-known-modes
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'((c-mode . "c-cmt2") (c++-mode . "c-cmt2") (java-mode . "java-cmt")
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(html-mode . "html-cmt") (sh-mode . "pound-cmt") (perl-mode . "pound-cmt")
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(python-mode . "pound-cmt") (ruby-mode . "pound-cmt")
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(emacs-lisp-mode . "lisp-cmt") (lisp-mode . "lisp-cmt"))
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"Default box type based on the major mode of the buffer."
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:type '(alist :key-type symbol :value-type string)
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:group 'boxes)
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(defconst boxes-minimum-version "2.1.0"
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"Minimum required version of `boxes' to support querying the available box types.")
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(defvar boxes-history nil
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"Boxes types history.")
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(defvar-local boxes-default-type nil
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"The default type of box.")
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(defvar boxes-types-list nil
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"List of types available to the current boxes implementation, nil if not set yet.")
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(defun boxes-types ()
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"Return the list of types available to the current boxes implementation.
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Signal error if a supported version of `boxes' is not available."
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(condition-case nil
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(or boxes-types-list
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(setq boxes-types-list
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(let ((types (process-lines boxes-command "-q" "(all)")))
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(mapcar (lambda(type) (replace-regexp-in-string " *\(alias\) *$" "" type))
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types))))
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(error (error "Please install Boxes %s or later" boxes-minimum-version))))
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(defun boxes-default-type (mode)
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"Get the default box type for the given buffer major MODE."
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(or (cdr (assoc mode boxes-known-modes)) "c-cmt2"))
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;;;###autoload
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(defun boxes-create ()
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"Automagicly create a new box around the region based on the default type."
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(interactive "*")
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(boxes-command-on-region (region-beginning) (region-end) boxes-default-type))
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;;;###autoload
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(defun boxes-remove ()
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"Automagicly remove a new box around the region based on the default type."
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(interactive "*")
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(boxes-command-on-region (region-beginning) (region-end) boxes-default-type 1))
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;;;###autoload
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(defun boxes-command-on-region (start end type &optional remove)
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"Create or Remove boxes from a region.
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To create a box select a region, hit \\[boxes-command-on-region]
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& enter a box type. Box type selection uses tab completion on
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the supported types.
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To remove a box simply prefix a 1 to the call, eg M-1
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\\[boxes-command-on-region] will remove a box from a region.
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Note that interactive use requires `boxes' >= 2.1.0 to support
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querying the supported types.
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When calling from Lisp, supply the region START & END and the box
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TYPE to create a box. Specifying a non-nil value for REMOVE,
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removes the box."
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(interactive (let ((string
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(completing-read (format "Box type (%s): " boxes-default-type)
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(boxes-types) nil t nil 'boxes-history boxes-default-type)))
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(list (region-beginning) (region-end)
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string
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current-prefix-arg)))
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(when (or (null type) (string= type ""))
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(setq type (boxes-default-type major-mode)))
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(setq boxes-default-type type)
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(let ((command-string
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(concat boxes-command
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(if remove
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(concat boxes-args " -r "))
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(if type
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(concat boxes-args " -d " type)))))
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(shell-command-on-region start end command-string nil 1)))
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(provide 'boxes)
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;;; boxes.el ends here
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