From 048cfece135da53f2462fc9ed4e58366f2f80f33 Mon Sep 17 00:00:00 2001 From: morioka Date: Fri, 4 Jun 1999 08:38:26 +0000 Subject: [PATCH] Split off features about coding-system from poem-om.el. --- pces-om.el | 307 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 307 insertions(+) create mode 100644 pces-om.el diff --git a/pces-om.el b/pces-om.el new file mode 100644 index 0000000..72c8a99 --- /dev/null +++ b/pces-om.el @@ -0,0 +1,307 @@ +;;; pces-om.el --- pces implementation for Mule 1.* and Mule 2.* + +;; Copyright (C) 1995,1996,1997,1998,1999 Free Software Foundation, Inc. + +;; Author: MORIOKA Tomohiko +;; Katsumi Yamaoka +;; 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: + +(require 'poe) + + +;;; @ version specific features +;;; + +(cond ((= emacs-major-version 19) + (define-ccl-program poem-ccl-decode-raw-text + '(1 + ((r2 = 0) + (read r0) + (loop + (if (r0 == ?\x0d) + ((r2 = 1) + (read-if (r1 == ?\x0a) + ((r0 = ?\x0a) + (r2 = 0) + (write-read-repeat r0)) + ((write r0) + (r0 = (r1 + 0)) + (repeat)))) + ((r2 = 0) + (write-read-repeat r0))))) + ;; This EOF BLOCK won't work out in practice. So the last datum + ;; might be lost if it's value is ?\x0d. + (if r2 + (write r0)) + ) + "Convert line-break code from CRLF to LF.") + + (define-ccl-program poem-ccl-encode-raw-text + '(1 + ((read r0) + (loop (write-read-repeat r0)))) + "Pass through without any conversions.") + + (define-ccl-program poem-ccl-encode-raw-text-CRLF + '(2 + ((loop + (read-if (r0 == ?\x0a) + (write "\x0d\x0a") + (write r0)) + (repeat)))) + "Convert line-break code from LF to CRLF.") + + (make-coding-system + 'raw-text 4 ?= + "No conversion" + nil + (cons poem-ccl-decode-raw-text poem-ccl-encode-raw-text)) + + (make-coding-system + 'raw-text-dos 4 ?= + "No conversion" + nil + (cons poem-ccl-decode-raw-text poem-ccl-encode-raw-text-CRLF)) + ) + (t + (defun poem-decode-raw-text (from to) + (save-restriction + (narrow-to-region from to) + (goto-char (point-min)) + (while (re-search-forward "\r$" nil t) + (replace-match "") + ))) + (defun poem-encode-raw-text-CRLF (from to) + (save-restriction + (narrow-to-region from to) + (goto-char (point-min)) + (while (re-search-forward "\\(\\=\\|[^\r]\\)\n" nil t) + (replace-match "\\1\r\n") + ))) + + (make-coding-system 'raw-text nil ?= "No conversion") + (put 'raw-text 'post-read-conversion 'poem-decode-raw-text) + + (make-coding-system 'raw-text-dos nil ?= "No conversion") + (put 'raw-text-dos 'post-read-conversion 'poem-decode-raw-text) + (put 'raw-text-dos 'pre-write-conversion 'poem-encode-raw-text-CRLF) + )) + + +;;; @ coding system +;;; + +(defun encode-coding-region (start end coding-system) + "Encode the text between START and END to CODING-SYSTEM. +\[EMACS 20 emulating function]" + ;; If `coding-system' is nil, do nothing. + (code-convert-region start end *internal* coding-system)) + +(defun decode-coding-region (start end coding-system) + "Decode the text between START and END which is encoded in CODING-SYSTEM. +\[EMACS 20 emulating function]" + ;; If `coding-system' is nil, do nothing. + (code-convert-region start end coding-system *internal*)) + +;; XXX: Should we support optional NOCOPY argument? (only in Emacs 20.x) +(defun encode-coding-string (str coding-system) + "Encode the STRING to CODING-SYSTEM. +\[EMACS 20 emulating function]" + (if coding-system + (code-convert-string str *internal* coding-system) + ;;(code-convert-string str *internal* nil) returns nil instead of str. + str)) + +;; XXX: Should we support optional NOCOPY argument? (only in Emacs 20.x) +(defun decode-coding-string (str coding-system) + "Decode the string STR which is encoded in CODING-SYSTEM. +\[EMACS 20 emulating function]" + (if coding-system + (let ((len (length str)) + ret) + (while (and (< 0 len) + (null (setq ret + (code-convert-string + (substring str 0 len) + coding-system *internal*)))) + (setq len (1- len))) + (concat ret (substring str len))) + str)) + +(defalias 'detect-coding-region 'code-detect-region) + +(defalias 'set-buffer-file-coding-system 'set-file-coding-system) + + +;;; @ with code-conversion +;;; + +(defun insert-file-contents-as-coding-system + (coding-system filename &optional visit beg end replace) + "Like `insert-file-contents', q.v., but CODING-SYSTEM the first arg will +be applied to `file-coding-system-for-read'." + (let ((file-coding-system-for-read coding-system)) + (insert-file-contents filename visit beg end replace))) + +(cond + ((and (>= emacs-major-version 19) (>= emacs-minor-version 29)) + ;; for MULE 2.3 based on Emacs 19.34. + (defun write-region-as-coding-system + (coding-system start end filename &optional append visit lockname) + "Like `write-region', q.v., but CODING-SYSTEM the first arg will be +applied to `file-coding-system'." + (let ((file-coding-system coding-system) + 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., but CODING-SYSTEM the first arg will +be applied to `file-coding-system-for-read'." + (let ((file-coding-system-for-read coding-system)) + (find-file-noselect filename nowarn rawfile))) + ) + (t + ;; for MULE 2.3 based on Emacs 19.28 or MULE 1.*. + (defun write-region-as-coding-system + (coding-system start end filename &optional append visit lockname) + "Like `write-region', q.v., but CODING-SYSTEM the first arg will be +applied to `file-coding-system'." + (let ((file-coding-system coding-system) + jka-compr-compression-info-list jam-zcat-filename-list) + (write-region start end filename append visit))) + + (defun find-file-noselect-as-coding-system + (coding-system filename &optional nowarn rawfile) + "Like `find-file-noselect', q.v., but CODING-SYSTEM the first arg will +be applied to `file-coding-system-for-read'." + (let ((file-coding-system-for-read coding-system)) + (find-file-noselect filename nowarn))) + )) + +(defun save-buffer-as-coding-system (coding-system &optional args) + "Like `save-buffer', q.v., but CODING-SYSTEM the first arg will be +applied to `coding-system-for-write'." + (let ((file-coding-system coding-system)) + (save-buffer args))) + + +;;; @ without code-conversion +;;; + +(make-coding-system 'binary nil ?= "No conversion") + +(defmacro as-binary-process (&rest body) + (` (let (selective-display ; Disable ^M to nl translation. + ;; Mule + mc-flag + (default-process-coding-system (cons *noconv* *noconv*)) + program-coding-system-alist) + (,@ body)))) + +(defmacro as-binary-input-file (&rest body) + (` (let (mc-flag + (file-coding-system-for-read *noconv*) + ) + (,@ body)))) + +(defmacro as-binary-output-file (&rest body) + (` (let (mc-flag + (file-coding-system *noconv*) + ) + (,@ body)))) + +(defalias 'set-process-input-coding-system 'set-process-coding-system) + +(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." + (as-binary-input-file + ;; Returns list absolute file name and length of data inserted. + (insert-file-contents filename visit beg end replace))) + +(defun insert-file-contents-as-raw-text (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. +Like `insert-file-contents-as-binary', but it converts line-break +code." + ;; Returns list absolute file name and length of data inserted. + (insert-file-contents-as-coding-system 'raw-text + filename visit beg end replace)) + +(defalias 'insert-file-contents-as-raw-text-CRLF + 'insert-file-contents-as-raw-text) + +(defun write-region-as-binary (start end filename + &optional append visit lockname) + "Like `write-region', q.v., but don't code conversion." + (write-region-as-coding-system 'binary + start end filename append visit lockname)) + +(defun write-region-as-raw-text-CRLF (start end filename + &optional append visit lockname) + "Like `write-region', q.v., but don't code conversion." + (write-region-as-coding-system 'raw-text-dos + start end filename append visit lockname)) + +(defun find-file-noselect-as-binary (filename &optional nowarn rawfile) + "Like `find-file-noselect', q.v., but don't code and format conversion." + (find-file-noselect-as-coding-system 'binary filename nowarn rawfile)) + +(defun find-file-noselect-as-raw-text (filename &optional nowarn rawfile) + "Like `find-file-noselect', q.v., but it does not code and format +conversion except for line-break code." + (find-file-noselect-as-coding-system 'raw-text filename nowarn rawfile)) + +(defalias 'find-file-noselect-as-raw-text-CRLF + 'find-file-noselect-as-raw-text) + +(defun save-buffer-as-binary (&optional args) + "Like `save-buffer', q.v., but don't encode." + (let ((file-coding-system 'binary)) + (save-buffer args))) + +(defun save-buffer-as-raw-text-CRLF (&optional args) + "Like `save-buffer', q.v., but save as network representation." + (let ((file-coding-system 'raw-text-dos)) + (save-buffer args))) + +(defun open-network-stream-as-binary (name buffer host service) + "Like `open-network-stream', q.v., but don't code conversion." + (let ((process (open-network-stream name buffer host service))) + (set-process-coding-system process *noconv* *noconv*) + process)) + + +;;; @ end +;;; + +(provide 'pces-om) + +;;; pces-om.el ends here -- 1.7.10.4