125 lines
4.6 KiB
EmacsLisp
125 lines
4.6 KiB
EmacsLisp
;;; xmtn-compat.el --- xmtn compatibility with different Emacs versions
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;; Copyright (C) 2008 Stephen Leake
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;; Copyright (C) 2006, 2007 Christian M. Ohler
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;; Author: Christian M. Ohler
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;; Keywords: extensions
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;; This file is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 2 of the License, or
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;; (at your option) any later version.
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;;
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;; This file 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
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;; GNU General Public License for more details.
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;;
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;; You should have received a copy of the GNU General Public License
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;; along with this file; see the file COPYING. If not, write to
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;; the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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;; Boston, MA 02110-1301 USA.
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;;; Commentary:
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;; Wrappers and fallback implementations for various Emacs functions
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;; needed by xmtn that don't exist in all versions of Emacs.
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;;; Code:
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;;; There are some notes on the design of xmtn in
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;;; docs/xmtn-readme.txt.
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(eval-and-compile
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(require 'cl))
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(defun xmtn--temp-directory ()
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(if (fboundp 'temp-directory)
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(temp-directory)
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temporary-file-directory))
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(defun xmtn--make-temp-file (prefix &optional dirp suffix)
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;; Do this in a temp buffer to ensure we use the default file output
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;; encoding. Emacs 21's `make-temp-file' uses the current buffer's
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;; output format function while writing the file with `write-region'
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;; with a string as its first argument, but coding conversion errors
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;; when `write-region' is called in this way.
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(with-temp-buffer
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;; XEmacs' `make-temp-file' doesn't automatically use temp
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;; directory.
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(setq prefix (expand-file-name prefix (xmtn--temp-directory)))
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;; FIXME: Ignoring suffix for now since Emacs 21 doesn't support it.
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(make-temp-file prefix dirp)))
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(defvar xmtn--*process-plists* (make-hash-table :weakness 'key))
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;;; These should probably use `process-get' and `process-put' if
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;;; available, but that's not important.
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(defun xmtn--process-put (process propname value)
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(setf (getf (gethash process xmtn--*process-plists*) propname) value)
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;; Mimic the return value that `process-put' would yield.
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(gethash process xmtn--*process-plists*))
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(defsubst xmtn--process-get (process propname)
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(getf (gethash process xmtn--*process-plists*) propname nil))
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(defmacro xmtn--set-process-query-on-exit-flag (process value)
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(if (fboundp 'set-process-query-on-exit-flag)
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`(set-process-query-on-exit-flag ,process ,value)
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`(progn
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(process-kill-without-query ,process ,value)
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,value)))
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(defmacro xmtn--insert-buffer-substring-no-properties (from-buffer
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&optional start end)
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(if (fboundp 'insert-buffer-substring-no-properties)
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`(insert-buffer-substring-no-properties ,from-buffer ,start ,end)
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`(progn
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(insert (with-current-buffer ,from-buffer
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(buffer-substring-no-properties (or ,start (point-min))
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(or ,end (point-max)))))
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nil)))
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(defun xmtn--lwarn (tag level message &rest args)
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(if (fboundp 'lwarn)
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(apply #'lwarn tag level message args)
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(apply #'message message args))
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;; The return value of `lwarn' seems to be pretty much undefined, so
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;; we don't try to replicate it here.
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nil)
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(defmacro* xmtn--with-no-warnings (&body body)
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(if (fboundp 'with-no-warnings)
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`(with-no-warnings ,@body)
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`(progn ,@body)))
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(defmacro* xmtn--with-temp-message (message &body body)
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(declare (indent 1) (debug (form body)))
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(if (fboundp 'with-temp-message)
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`(with-temp-message ,message ,@body)
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`(progn ,@body)))
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(defmacro* xmtn--dotimes-with-progress-reporter ((i n-form &optional res-form)
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message-form
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&body body)
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(declare (indent 2) (debug (sexp form body)))
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(if (fboundp 'dotimes-with-progress-reporter)
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`(dotimes-with-progress-reporter (,i ,n-form ,res-form)
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,message-form ,@body)
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(let ((message (gensym)))
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`(let ((,message ,message-form))
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(prog1
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(xmtn--with-temp-message ,message
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(dotimes (,i ,n-form ,res-form)
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,@body))
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(message "%sdone" ,message))))))
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(defmacro xmtn--set-buffer-multibyte (flag)
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(when (fboundp 'set-buffer-multibyte)
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`(set-buffer-multibyte ,flag)))
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(provide 'xmtn-compat)
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;;; xmtn-compat.el ends here
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