/
poem-ltn1.el
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poem-ltn1.el
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;;; poem-ltn1.el --- poem implementation for Emacs 19 and XEmacs without MULE
;; Copyright (C) 1995,1996,1997,1998 Free Software Foundation, Inc.
;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
;; Keywords: emulation, compatibility, Mule
;; This file is part of APEL (A Portable Emacs Library).
;; This program is free software; you can redistribute it and/or
;; modify it under the terms of the GNU General Public License as
;; published by the Free Software Foundation; either version 2, or (at
;; your option) any later version.
;; This program is distributed in the hope that it will be useful, but
;; WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
;; General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs; see the file COPYING. If not, write to the
;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.
;;; Code:
;;; @ buffer representation
;;;
(defun-maybe set-buffer-multibyte (flag)
"Set the multibyte flag of the current buffer to FLAG.
If FLAG is t, this makes the buffer a multibyte buffer.
If FLAG is nil, this makes the buffer a single-byte buffer.
The buffer contents remain unchanged as a sequence of bytes
but the contents viewed as characters do change.
\[Emacs 20.3 emulating macro]"
)
;;; @ character set
;;;
(put 'ascii 'charset-description "Character set of ASCII")
(put 'ascii 'charset-registry "ASCII")
(put 'latin-iso8859-1 'charset-description "Character set of ISO-8859-1")
(put 'latin-iso8859-1 'charset-registry "ISO8859-1")
(defun charset-description (charset)
"Return description of CHARSET."
(get charset 'charset-description))
(defun charset-registry (charset)
"Return registry name of CHARSET."
(get charset 'charset-registry))
(defun charset-width (charset)
"Return number of columns a CHARSET occupies when displayed."
1)
(defun charset-direction (charset)
"Return the direction of a character of CHARSET by
0 (left-to-right) or 1 (right-to-left)."
0)
(defun find-charset-string (str)
"Return a list of charsets in the string."
(if (string-match "[\200-\377]" str)
'(latin-iso8859-1)
))
(defalias 'find-non-ascii-charset-string 'find-charset-string)
(defun find-charset-region (start end)
"Return a list of charsets in the region between START and END."
(if (save-excursion
(goto-char start)
(re-search-forward "[\200-\377]" end t))
'(latin-iso8859-1)
))
(defalias 'find-non-ascii-charset-region 'find-charset-region)
;;; @ coding-system
;;;
(defun decode-coding-string (string coding-system)
"Decode the STRING which is encoded in CODING-SYSTEM."
string)
(defun encode-coding-string (string coding-system)
"Encode the STRING as CODING-SYSTEM."
string)
(defun decode-coding-region (start end coding-system)
"Decode the text between START and END which is encoded in CODING-SYSTEM."
0)
(defun encode-coding-region (start end coding-system)
"Encode the text between START and END to CODING-SYSTEM."
0)
(defun detect-coding-region (start end)
"Detect coding-system of the text in the region between START and END."
)
(defun set-buffer-file-coding-system (coding-system &optional force)
"Set buffer-file-coding-system of the current buffer to CODING-SYSTEM."
)
;;; @ without code-conversion
;;;
(defmacro as-binary-process (&rest body)
(` (let (selective-display) ; Disable ^M to nl translation.
(,@ body))))
(defmacro as-binary-input-file (&rest body)
(` (let ((emx-binary-mode t)) ; Stop CRLF to LF conversion in OS/2
(,@ body))))
(defmacro as-binary-output-file (&rest body)
(` (let ((emx-binary-mode t)) ; Stop CRLF to LF conversion in OS/2
(,@ body))))
(defun write-region-as-binary (start end filename
&optional append visit lockname)
"Like `write-region', q.v., but don't code conversion."
(let ((emx-binary-mode t))
(write-region start end filename append visit lockname)))
(defun insert-file-contents-as-binary (filename
&optional visit beg end replace)
"Like `insert-file-contents', q.v., but don't code and format conversion.
Like `insert-file-contents-literary', but it allows find-file-hooks,
automatic uncompression, etc.
Namely this function ensures that only format decoding and character
code conversion will not take place."
(let ((emx-binary-mode t))
;; Returns list of absolute file name and length of data inserted.
(insert-file-contents filename visit beg end replace)))
(defun write-region-as-raw-text-CRLF (start end filename
&optional append visit lockname)
"Like `write-region', q.v., but write as network representation."
(let ((the-buf (current-buffer)))
(with-temp-buffer
(insert-buffer-substring the-buf start end)
(goto-char (point-min))
(while (re-search-forward "\\(\\=\\|[^\r]\\)\n" nil t)
(replace-match "\\1\r\n"))
(write-region (point-min)(point-max) filename append visit lockname))))
(defalias 'insert-file-contents-as-raw-text 'insert-file-contents)
(defun find-file-noselect-as-binary (filename &optional nowarn rawfile)
"Like `find-file-noselect', q.v., but don't code and format conversion."
(let ((emx-binary-mode t))
(find-file-noselect filename nowarn rawfile)))
(defalias find-file-noselect-as-raw-text 'find-file-noselect)
(defun open-network-stream-as-binary (name buffer host service)
"Like `open-network-stream', q.v., but don't code conversion."
(let ((emx-binary-mode t))
(open-network-stream name buffer host service)))
;;; @ with code-conversion (but actually it might be not done)
;;;
(defun insert-file-contents-as-coding-system
(coding-system filename &optional visit beg end replace)
"Like `insert-file-contents', q.v., CODING-SYSTEM the first arg will be
ignored."
(insert-file-contents filename visit beg end replace))
(defun write-region-as-coding-system
(coding-system start end filename &optional append visit lockname)
"Like `write-region', q.v., CODING-SYSTEM the first arg will be ignored."
(let (jka-compr-compression-info-list jam-zcat-filename-list)
(write-region start end filename append visit lockname)))
(defun find-file-noselect-as-coding-system
(coding-system filename &optional nowarn rawfile)
"Like `find-file-noselect', q.v., CODING-SYSTEM the first arg will be
ignored."
(find-file-noselect filename nowarn rawfile))
;;; @ character
;;;
(defun char-charset (char)
"Return the character set of char CHAR."
(if (< char 128)
'ascii
'latin-iso8859-1))
(defun char-bytes (char)
"Return number of bytes a character in CHAR occupies in a buffer."
1)
(defun char-width (char)
"Return number of columns a CHAR occupies when displayed."
1)
(defun split-char (character)
"Return list of charset and one or two position-codes of CHARACTER."
(cons (char-charset character) character))
(defalias 'char-length 'char-bytes)
(defmacro char-next-index (char index)
"Return index of character succeeding CHAR whose index is INDEX."
(` (1+ (, index))))
;;; @ string
;;;
(defalias 'string-width 'length)
(defun string-to-char-list (str)
(mapcar (function identity) str))
(defalias 'string-to-int-list 'string-to-char-list)
(defalias 'sref 'aref)
(defun truncate-string (str width &optional start-column)
"Truncate STR to fit in WIDTH columns.
Optional non-nil arg START-COLUMN specifies the starting column.
\[emu-latin1.el; MULE 2.3 emulating function]"
(or start-column
(setq start-column 0))
(substring str start-column width))
(defalias 'looking-at-as-unibyte 'looking-at)
;;; @@ obsoleted aliases
;;;
;;; You should not use them.
(defalias 'string-columns 'length)
(make-obsolete 'string-columns 'string-width)
;;; @ end
;;;
(provide 'poem-ltn1)
;;; poem-ltn1.el ends here