165 lines
4.4 KiB
EmacsLisp
165 lines
4.4 KiB
EmacsLisp
;;; poem-om.el --- poem implementation for Mule 1.* and Mule 2.*
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;; Copyright (C) 1995,1996,1997,1998,1999 Free Software Foundation, Inc.
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;; Author: MORIOKA Tomohiko <tomo@m17n.org>
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;; Katsumi Yamaoka <yamaoka@jpl.org>
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;; Keywords: emulation, compatibility, Mule
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;; This file is part of APEL (A Portable Emacs Library).
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;; This program 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 2, or (at
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;; your option) any later version.
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;; This program is distributed in the hope that it will be useful, but
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;; 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 GNU Emacs; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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;; Boston, MA 02110-1301, USA.
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;;; Code:
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(require 'poe)
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;;; @ version specific features
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;;;
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(if (= emacs-major-version 19)
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;; Suggested by SASAKI Osamu <osamu@shuugr.bekkoame.or.jp>
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;; (cf. [os2-emacs-ja:78])
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(defun fontset-pixel-size (fontset)
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(let* ((font (get-font-info
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(aref (cdr (get-fontset-info fontset)) 0)))
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(open (aref font 4)))
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(if (= open 1)
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(aref font 5)
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(if (= open 0)
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(let ((pat (aref font 1)))
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(if (string-match "-[0-9]+-" pat)
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(string-to-number
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(substring
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pat (1+ (match-beginning 0)) (1- (match-end 0))))
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0))
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))))
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)
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;;; @ character set
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;;;
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(defalias 'make-char 'make-character)
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(defalias 'find-non-ascii-charset-string 'find-charset-string)
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(defalias 'find-non-ascii-charset-region 'find-charset-region)
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(defalias 'charset-bytes 'char-bytes)
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(defalias 'charset-description 'char-description)
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(defalias 'charset-registry 'char-registry)
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(defalias 'charset-columns 'char-width)
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(defalias 'charset-direction 'char-direction)
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(defun charset-chars (charset)
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"Return the number of characters per dimension of CHARSET."
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(if (= (logand (nth 2 (character-set charset)) 1) 1)
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96
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94))
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;;; @ buffer representation
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;;;
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(defsubst-maybe set-buffer-multibyte (flag)
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"Set the multibyte flag of the current buffer to FLAG.
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If FLAG is t, this makes the buffer a multibyte buffer.
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If FLAG is nil, this makes the buffer a single-byte buffer.
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The buffer contents remain unchanged as a sequence of bytes
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but the contents viewed as characters do change.
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\[Emacs 20.3 emulating function]"
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(setq mc-flag flag)
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)
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;;; @ character
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;;;
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(defalias 'char-charset 'char-leading-char)
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(defun split-char (character)
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"Return list of charset and one or two position-codes of CHARACTER."
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(let ((p (1- (char-bytes character)))
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dest)
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(while (>= p 1)
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(setq dest (cons (- (char-component character p) 128) dest)
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p (1- p)))
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(cons (char-charset character) dest)))
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(defmacro char-next-index (char index)
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"Return index of character succeeding CHAR whose index is INDEX."
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(` (+ (, index) (char-bytes (, char)))))
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;;; @@ obsoleted aliases
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;;;
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;;; You should not use them.
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(defalias 'char-length 'char-bytes)
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;;(defalias 'char-columns 'char-width)
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;;; @ string
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;;;
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(defalias 'string-columns 'string-width)
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(defalias 'string-to-int-list 'string-to-char-list)
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;; Imported from Mule-2.3
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(defun-maybe truncate-string (str width &optional start-column)
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"\
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Truncate STR to fit in WIDTH columns.
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Optional non-nil arg START-COLUMN specifies the starting column.
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\[emu-mule.el; Mule 2.3 emulating function]"
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(or start-column
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(setq start-column 0))
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(let ((max-width (string-width str))
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(len (length str))
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(from 0)
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(column 0)
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to-prev to ch)
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(if (>= width max-width)
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(setq width max-width))
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(if (>= start-column width)
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""
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(while (< column start-column)
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(setq ch (aref str from)
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column (+ column (char-width ch))
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from (+ from (char-bytes ch))))
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(if (< width max-width)
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(progn
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(setq to from)
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(while (<= column width)
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(setq ch (aref str to)
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column (+ column (char-width ch))
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to-prev to
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to (+ to (char-bytes ch))))
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(setq to to-prev)))
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(substring str from to))))
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(defalias 'looking-at-as-unibyte 'looking-at)
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;;; @ end
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;;;
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(require 'product)
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(product-provide (provide 'poem-om) (require 'apel-ver))
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;;; poem-om.el ends here
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