155 lines
4.1 KiB
EmacsLisp
155 lines
4.1 KiB
EmacsLisp
;;; poem-ltn1.el --- poem implementation for Emacs 19 and XEmacs without MULE
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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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;; 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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;;; @ buffer representation
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;;;
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(eval-when-compile
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(require 'poe))
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(defun-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 macro]"
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)
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;;; @ character set
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;;;
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(put 'ascii 'charset-description "Character set of ASCII")
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(put 'ascii 'charset-registry "ASCII")
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(put 'latin-iso8859-1 'charset-description "Character set of ISO-8859-1")
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(put 'latin-iso8859-1 'charset-registry "ISO8859-1")
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(defun charset-description (charset)
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"Return description of CHARSET."
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(get charset 'charset-description))
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(defun charset-registry (charset)
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"Return registry name of CHARSET."
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(get charset 'charset-registry))
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(defun charset-width (charset)
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"Return number of columns a CHARSET occupies when displayed."
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1)
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(defun charset-direction (charset)
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"Return the direction of a character of CHARSET by
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0 (left-to-right) or 1 (right-to-left)."
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0)
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(defun find-charset-string (str)
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"Return a list of charsets in the string."
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(if (string-match "[\200-\377]" str)
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'(latin-iso8859-1)
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))
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(defalias 'find-non-ascii-charset-string 'find-charset-string)
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(defun find-charset-region (start end)
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"Return a list of charsets in the region between START and END."
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(if (save-excursion
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(goto-char start)
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(re-search-forward "[\200-\377]" end t))
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'(latin-iso8859-1)
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))
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(defalias 'find-non-ascii-charset-region 'find-charset-region)
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;;; @ character
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;;;
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(defun char-charset (char)
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"Return the character set of char CHAR."
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(if (< char 128)
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'ascii
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'latin-iso8859-1))
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(defun char-bytes (char)
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"Return number of bytes a character in CHAR occupies in a buffer."
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1)
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(defun char-width (char)
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"Return number of columns a CHAR occupies when displayed."
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1)
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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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(cons (char-charset character) character))
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(defalias 'char-length 'char-bytes)
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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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(` (1+ (, index))))
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;;; @ string
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;;;
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(defalias 'string-width 'length)
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(defun string-to-char-list (str)
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(mapcar (function identity) str))
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(defalias 'string-to-int-list 'string-to-char-list)
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(defalias 'sref 'aref)
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(defun truncate-string (str width &optional start-column)
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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-latin1.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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(if (> (length str) width)
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(substring str start-column width)
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str))
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(defalias 'looking-at-as-unibyte 'looking-at)
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;;; @@ obsoleted aliases
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;;;
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;;; You should not use them.
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(defalias 'string-columns 'length)
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(make-obsolete 'string-columns 'string-width)
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;;; @ end
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;;;
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(require 'product)
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(product-provide (provide 'poem-ltn1) (require 'apel-ver))
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;;; poem-ltn1.el ends here
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