470 lines
16 KiB
EmacsLisp
470 lines
16 KiB
EmacsLisp
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;;; multi-web-mode.el --- multiple major mode support for web editing
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;; Copyright (C) 2012 Fabián Ezequiel Gallina.
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;; Author: Fabián E. Gallina <fabian@anue.biz>
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;; URL: https://github.com/fgallina/multi-web-mode
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;; Version: 0.1
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;; Created: Feb 2009
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;; Keywords: convenience, languages, wp
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;; This file is part of Multi Web Mode
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;; Multi Web Mode is free software: you can redistribute it and/or
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;; modify it under the terms of the GNU General Public License as
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;; published by the Free Software Foundation, either version 3 of the
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;; License, or (at your option) any later version.
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;; Multi Web Mode is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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;; General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with Multi Web Mode. If not, see <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;; Multi Web Mode is a minor mode wich makes web editing in Emacs much easier.
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;; Basically what it does is select the appropriate major mode
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;; automatically when you move the point and also calculates the
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;; correct indentation of chunks according to the indentation of the
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;; most relevant major mode.
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;;
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;;; Code:
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(eval-when-compile
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(require 'cl)
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(defvar multi-web-mode))
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(defvar mweb-mode-map
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(let ((mweb-mode-map (make-sparse-keymap)))
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(define-key mweb-mode-map (kbd "M-<f11>") 'mweb-set-default-major-mode)
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(define-key mweb-mode-map (kbd "M-<f12>") 'mweb-set-extra-indentation)
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(define-key mweb-mode-map [remap mark-whole-buffer] 'mweb-mark-whole-buffer)
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mweb-mode-map)
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"Keymaps for command `multi-web-mode'.")
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(defvar mweb-mode-hook nil
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"Hooks to run when command `multi-web-mode' is initialized.")
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(defvar mweb-extra-indentation 0
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"Extra indentation for chunks.
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Automatically calculated when the major mode has changed.")
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(defcustom mweb-default-major-mode nil
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"Default major mode when not in chunk."
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:type 'symbol
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:group 'multi-web-mode
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:safe 'symbolp)
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(defcustom mweb-filename-extensions
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nil
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"File extensions that trigger activation.
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This is an example configuration:
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'(\"php\" \"htm\" \"html\" \"ctp\" \"phtml\" \"php4\" \"php5\")"
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:type '(list string)
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:group 'multi-web-mode
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:safe #'(lambda (extensions)
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(not (catch 'fail
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(dolist (ext extensions)
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(when (not (stringp ext))
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(throw 'fail t)))))))
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(defcustom mweb-tags
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nil
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"Tags enabled for command `multi-web-mode'.
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This var is an alist on which each element has the form
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\(major-mode \"open tag regex\" \"close tag regex\").
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This is an example configuration:
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\(\(php-mode \"<\\\\?php\\|<\\\\? \\|<\\\\?=\" \"\\\\?>\")
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\(js-mode \"<script[^>]*>\" \"</script>\")
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\(css-mode \"<style[^>]*>\" \"</style>\"))"
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:type '(repeat (symbol string string))
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:group 'multi-web-mode
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:safe #'(lambda (tags)
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(not (catch 'fail
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(dolist (tag tags)
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(when (or
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(not (symbolp (mweb-get-tag-attr tag 'mode)))
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(not (stringp (mweb-get-tag-attr tag 'open)))
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(not (stringp (mweb-get-tag-attr tag 'close))))
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(throw 'fail t)))))))
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(defcustom mweb-submode-indent-offset 2
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"Indentation offset for code inside chunks."
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:type 'integer
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:group 'multi-web-mode
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:safe 'integerp)
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(defcustom mweb-ignored-commands
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(list
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'undo
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'yas/expand
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'yas/next-field-or-maybe-expand
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'isearch-forward
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'isearch-backward
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'isearch-other-control-char)
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"Commands that prevent changing the major mode."
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:type '(repeat symbol)
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:group 'multi-web-mode
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:safe #'(lambda (names)
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(not (catch 'fail
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(dolist (name names)
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(when (not (symbolp name))
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(throw 'fail t)))))))
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(defun mweb-get-tag-attr (tag attribute)
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"Get TAG ATTRIBUTE.
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ATTRIBUTE values can be 'mode to get the tag's major mode or
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'open/'close to get the open/close regexp respectively."
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(case attribute
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(mode (car tag))
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(open (cadr tag))
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(close (caddr tag))))
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(defun mweb-get-tag (tag-major-mode)
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"Return tag from `mweb-tags' matching TAG-MAJOR-MODE."
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(assoc tag-major-mode mweb-tags))
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(defun mweb--looking-at-tag (&optional type)
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"Return non-nil if pointer is looking at an open or close tag.
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Possible values of TYPE are:
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* nil: to check if point is looking at an open or close tag.
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* 'open: to check if point is looking at an open tag
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* 'close: to check if point is looking at a close tag"
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(let ((index 0)
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(looking)
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(open-tag)
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(close-tag)
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(tag-regexp))
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(save-excursion
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(back-to-indentation)
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(while (and (< index (length mweb-tags))
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(not looking))
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(setq open-tag (mweb-get-tag-attr (elt mweb-tags index) 'open))
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(setq close-tag (mweb-get-tag-attr (elt mweb-tags index) 'close))
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(case type
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(open (setq tag-regexp open-tag))
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(close (setq tag-regexp close-tag))
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(otherwise (setq tag-regexp (concat open-tag "\\|" close-tag))))
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(when (looking-at tag-regexp)
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(setq looking t))
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(setq index (+ 1 index))))
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looking))
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(defsubst mweb-looking-at-open-tag-p ()
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"Return t if point is looking at an open tag."
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(mweb--looking-at-tag 'open))
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(defsubst mweb-looking-at-close-tag-p ()
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"Return t if point is looking at a close tag."
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(mweb--looking-at-tag 'close))
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(defsubst mweb-looking-at-tag-p ()
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"Return t if point is looking at an open or close tag."
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(mweb--looking-at-tag))
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(defun mweb-change-major-mode ()
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"Call the appropriate major mode for the pointed chunk.
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If the current `major-mode' is the correct one it doesn't funcall the
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major mode and returns nil, otherwise changes the `major-mode' and
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returns a symbol with its name."
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(let ((closest-chunk-point 0)
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(closest-chunk-mode mweb-default-major-mode)
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(result nil))
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(save-restriction
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(widen)
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(dolist (tag mweb-tags)
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(setq result (mweb-closest-starting-chunk-point tag))
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(when (and (integerp result)
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(<= closest-chunk-point result))
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(setq closest-chunk-point result)
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(setq closest-chunk-mode (mweb-get-tag-attr tag 'mode)))))
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(when (not (equal closest-chunk-mode major-mode))
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(funcall closest-chunk-mode)
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closest-chunk-mode)))
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(defun mweb-change-indent-line-function ()
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"Set the correct value for `indent-line-function'.
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Depending of `major-mode'."
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(when (not (equal major-mode mweb-default-major-mode))
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(setq indent-line-function 'mweb-indent-line)))
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(defun mweb-closest-starting-chunk-point (tag)
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"Return the point of the closest chunk for TAG.
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Where TAG is one of the tags contained in the `mweb-tags'
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list. If the chunk is not found then it returns nil."
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(let ((open-tag)
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(close-tag))
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(save-excursion
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(setq open-tag (re-search-backward (mweb-get-tag-attr tag 'open) nil t)))
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(save-excursion
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(setq close-tag (re-search-backward (mweb-get-tag-attr tag 'close) nil t)))
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(cond ((not open-tag)
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nil)
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((and open-tag
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(not close-tag))
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open-tag)
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((> open-tag close-tag)
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open-tag))))
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(defun mweb-multiple-chunks-p ()
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"Check if multiple chunks exist in the current buffer."
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(save-excursion
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(save-restriction
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(widen)
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(goto-char (point-min))
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(re-search-forward "[^\s\t\n]" nil t)
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(or (not (mweb-looking-at-open-tag-p))
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(catch 'break
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(dolist (tag mweb-tags)
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(when (re-search-forward (mweb-get-tag-attr tag 'close) nil t)
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(throw 'break (not (not (re-search-forward "[^\s\t\n]" nil t)))))))))))
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(defun mweb-update-context ()
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"Update extra indentation value for chunks."
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(let ((changed-major-mode (mweb-change-major-mode)))
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(if (and changed-major-mode
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(not (equal major-mode mweb-default-major-mode)))
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(setq mweb-extra-indentation (mweb-calculate-indentation))
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(setq mweb-extra-indentation 0)))
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(mweb-change-indent-line-function))
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(defun mweb-calculate-indentation ()
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"Calculate the correct indentation given previous submode."
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(let ((indentation 0)
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(prev-line-pos)
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(changed-major-mode major-mode)
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(buffer-modified-flag (buffer-modified-p)))
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(save-restriction
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(widen)
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(save-excursion
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(mweb-goto-current-mode-open-tag)
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(if (progn (mweb-forward-nonblank-line -1) (bobp))
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(if (mweb-multiple-chunks-p)
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(setq indentation 0)
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(setq indentation (- mweb-submode-indent-offset)))
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(end-of-line)
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(setq prev-line-pos (point-marker))
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(insert "\na")
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(mweb-change-major-mode)
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(indent-according-to-mode)
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(setq indentation (current-indentation))
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(delete-region prev-line-pos (line-end-position))))
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(funcall changed-major-mode)
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(set-buffer-modified-p buffer-modified-flag)
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indentation)))
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(defun mweb-mark-whole-buffer ()
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"Multi-web-mode's version of `mark-whole-buffer'."
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(interactive)
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(push-mark (point))
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(goto-char (point-min))
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(mweb-change-major-mode)
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(push-mark (point-max) nil t))
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(defun mweb-indent-line ()
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"Function to use when indenting a submode line."
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(interactive)
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;; Yes, indent according to mode will do what we expect
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(setq mweb-extra-indentation (mweb-calculate-indentation))
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(if (not (mweb-looking-at-open-tag-p))
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(if (not (mweb-looking-at-close-tag-p))
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;; Normal indentation
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(if (equal major-mode mweb-default-major-mode)
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(indent-according-to-mode)
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(save-excursion
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(beginning-of-line)
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(delete-horizontal-space)
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(unless (bobp)
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(indent-according-to-mode)
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(indent-to (+ mweb-extra-indentation mweb-submode-indent-offset)))))
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;; Close tag indentation routine
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(let ((open-tag-indentation 0))
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(save-excursion
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(mweb-goto-current-mode-open-tag)
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(setq open-tag-indentation (current-indentation)))
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(beginning-of-line)
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(delete-horizontal-space)
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(indent-to open-tag-indentation)))
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;; Open tag indentation routine
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(beginning-of-line)
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(delete-horizontal-space)
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(insert "a")
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(delete-horizontal-space)
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(beginning-of-line)
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(mweb-update-context)
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(indent-according-to-mode)
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(indent-to (+ mweb-extra-indentation mweb-submode-indent-offset))
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(delete-char 1))
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(and (bolp) (back-to-indentation)))
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(defun mweb-indent-region (start end)
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"Indent a region taking care of chunks.
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This routine considers the relative position of the chunks within
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the buffer. It follows the same filosophy than
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`mweb-indent-line-forward' because that function is what is used
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to indent the chunks which are not for the default major mode.
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Called from a program, START and END specify the region to indent."
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(interactive "r")
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(let ((delete-active-region nil)
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(line-end))
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(save-excursion
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(goto-char end)
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(setq end (point-marker))
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(goto-char start)
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(mweb-change-major-mode)
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(or (bolp) (forward-line 1))
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(while (< (point) end)
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(mweb-update-context)
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(if (equal major-mode mweb-default-major-mode)
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(indent-according-to-mode)
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(mweb-indent-line))
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(forward-line 1))
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(move-marker end nil))))
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(defun mweb-get-current-mode-tag-point (type)
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"Gets the point marker of current chunk's open/close tag.
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The TYPE argument can be a 'open for the open tag or 'close for
|
|||
|
|
the close tag."
|
|||
|
|
(when (not (equal major-mode mweb-default-major-mode))
|
|||
|
|
(let ((index 0)
|
|||
|
|
(found nil)
|
|||
|
|
(tag)
|
|||
|
|
(result nil)
|
|||
|
|
(re-search-func (if (equal type 'open)
|
|||
|
|
're-search-backward
|
|||
|
|
're-search-forward)))
|
|||
|
|
(while (and (< index (length mweb-tags))
|
|||
|
|
(not found))
|
|||
|
|
(setq tag (elt mweb-tags index))
|
|||
|
|
(when (or (equal (mweb-get-tag-attr tag 'mode) major-mode)
|
|||
|
|
(equal major-mode mweb-default-major-mode))
|
|||
|
|
(setq found t)
|
|||
|
|
(save-excursion
|
|||
|
|
(if (looking-at (mweb-get-tag-attr tag type))
|
|||
|
|
(progn
|
|||
|
|
(back-to-indentation)
|
|||
|
|
(setq result (point)))
|
|||
|
|
(setq result (funcall re-search-func
|
|||
|
|
(mweb-get-tag-attr tag type)
|
|||
|
|
nil t)))))
|
|||
|
|
(setq index (+ 1 index)))
|
|||
|
|
result)))
|
|||
|
|
|
|||
|
|
(defun mweb-goto-current-mode-open-tag ()
|
|||
|
|
"Move the point to the open tag of the current chunk."
|
|||
|
|
(interactive)
|
|||
|
|
(let ((tag-point (mweb-get-current-mode-tag-point 'open)))
|
|||
|
|
(when tag-point
|
|||
|
|
(goto-char tag-point))))
|
|||
|
|
|
|||
|
|
(defun mweb-goto-current-mode-close-tag ()
|
|||
|
|
"Move the point to the close tag of the current chunk."
|
|||
|
|
(interactive)
|
|||
|
|
(let ((tag-point (mweb-get-current-mode-tag-point 'close)))
|
|||
|
|
(when tag-point
|
|||
|
|
(goto-char tag-point))))
|
|||
|
|
|
|||
|
|
(defun mweb-set-extra-indentation (number)
|
|||
|
|
"Set the new value for `mweb-extra-indentation' to NUMBER."
|
|||
|
|
(interactive "nNew mweb-extra-indentation value: ")
|
|||
|
|
(setq mweb-extra-indentation number)
|
|||
|
|
(message "mweb-extra-indentation = %d" mweb-extra-indentation))
|
|||
|
|
|
|||
|
|
(defun mweb-set-default-major-mode (major-mode)
|
|||
|
|
"Set the new value for `mweb-default-major-mode' to MAJOR-MODE."
|
|||
|
|
(interactive "CNew default major mode: ")
|
|||
|
|
(setq mweb-default-major-mode major-mode)
|
|||
|
|
(mweb-change-major-mode)
|
|||
|
|
(message "mweb-default-major-mode = %s" mweb-default-major-mode))
|
|||
|
|
|
|||
|
|
(defun mweb-forward-nonblank-line (&optional number)
|
|||
|
|
"Move the cursor to the next/previous non blank line.
|
|||
|
|
|
|||
|
|
When NUMBER is positive it moves forward and when is negative
|
|||
|
|
it moves backwards."
|
|||
|
|
(when (not number)
|
|||
|
|
(setq number 1))
|
|||
|
|
(when (> number 1)
|
|||
|
|
(setq number 1))
|
|||
|
|
(when (< number -1)
|
|||
|
|
(setq number -1))
|
|||
|
|
(forward-line number)
|
|||
|
|
(while (and (equal (mweb-get-current-line-trimmed-contents) "")
|
|||
|
|
(not (or (bobp) (eobp))))
|
|||
|
|
(forward-line number)))
|
|||
|
|
|
|||
|
|
(defun mweb-get-current-line-trimmed-contents ()
|
|||
|
|
"Gets the contents of the current line.
|
|||
|
|
It trims all space characters at the beginning and end of the line."
|
|||
|
|
(let ((start-point)
|
|||
|
|
(end-point)
|
|||
|
|
(contents))
|
|||
|
|
(save-excursion
|
|||
|
|
(beginning-of-line)
|
|||
|
|
(setq start-point (point))
|
|||
|
|
(end-of-line)
|
|||
|
|
(setq end-point (point))
|
|||
|
|
(setq contents (buffer-substring start-point end-point))
|
|||
|
|
(when (string-match "[ \t]*$" contents)
|
|||
|
|
(setq contents (replace-match "" nil nil contents)))
|
|||
|
|
(when (string-match "^[ \t]*" contents)
|
|||
|
|
(setq contents (replace-match "" nil nil contents))))
|
|||
|
|
contents))
|
|||
|
|
|
|||
|
|
(defun mweb-post-command-hook ()
|
|||
|
|
"The function which is appended to the `post-command-hook'."
|
|||
|
|
(when (and multi-web-mode
|
|||
|
|
(not (region-active-p))
|
|||
|
|
(not (member last-command mweb-ignored-commands)))
|
|||
|
|
(mweb-update-context)))
|
|||
|
|
|
|||
|
|
(defun mweb-enable ()
|
|||
|
|
"Setup the minor mode."
|
|||
|
|
(set (make-local-variable 'indent-region-function)
|
|||
|
|
'mweb-indent-region)
|
|||
|
|
(make-local-variable 'indent-line-function)
|
|||
|
|
(add-hook 'post-command-hook 'mweb-post-command-hook)
|
|||
|
|
(assq-delete-all 'multi-web-mode minor-mode-map-alist)
|
|||
|
|
(push (cons 'multi-web-mode mweb-mode-map)
|
|||
|
|
minor-mode-map-alist)
|
|||
|
|
(run-hooks 'mweb-mode-hook))
|
|||
|
|
|
|||
|
|
(defun mweb-disable ()
|
|||
|
|
"Disable the minor mode."
|
|||
|
|
(assq-delete-all 'multi-web-mode minor-mode-map-alist))
|
|||
|
|
|
|||
|
|
;;;###autoload
|
|||
|
|
(define-minor-mode multi-web-mode
|
|||
|
|
"Enables the multi web mode chunk detection and indentation"
|
|||
|
|
:lighter " Multi-Web" :group 'convenience
|
|||
|
|
(if multi-web-mode
|
|||
|
|
(mweb-enable)
|
|||
|
|
(mweb-disable)))
|
|||
|
|
|
|||
|
|
(defun multi-web-mode-maybe ()
|
|||
|
|
"Used to turn on the globalized minor mode."
|
|||
|
|
(when (member
|
|||
|
|
(file-name-extension (or buffer-file-name ""))
|
|||
|
|
mweb-filename-extensions)
|
|||
|
|
(multi-web-mode 1)))
|
|||
|
|
|
|||
|
|
;;;###autoload
|
|||
|
|
(define-globalized-minor-mode multi-web-global-mode
|
|||
|
|
multi-web-mode multi-web-mode-maybe
|
|||
|
|
:group 'multi-web-mode
|
|||
|
|
:require 'multi-web-mode)
|
|||
|
|
|
|||
|
|
(provide 'multi-web-mode)
|
|||
|
|
;;; multi-web-mode.el ends here
|