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;;; sml-util.el
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(defconst rcsid-sml-util "@(#)$Name$:$Id$")
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;; Copyright (C) 1999-1999 Stefan Monnier <monnier@cs.yale.edu>
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;;
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;; This program 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 program 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 program; if not, write to the Free Software
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;; Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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(require 'cl)
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(require 'sml-compat)
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;;
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(defmacro concatq (&rest ss)
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"Concatenate all the arguments and make the result a string.
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As opposed to `concat', `concatq' does not evaluate its arguments
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and is hence executed at macro-expansion-time."
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(apply 'concat ss))
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(defun flatten (ls &optional acc)
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(if (null ls) acc
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(let ((rest (flatten (cdr ls) acc))
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(head (car ls)))
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(if (listp head)
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(flatten head rest)
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(cons head rest)))))
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;;;
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;;; temp files
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;;;
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(defvar temp-file-dir temporary-file-directory
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"Directory where to put temp files.")
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(defvar temp-directories ())
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(defun delete-temp-dirs ()
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(dolist (dir temp-directories)
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(when (file-directory-p dir)
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(let ((default-directory dir))
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(dolist (file (directory-files "."))
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(ignore-errors (delete-file file))))
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(delete-directory dir))))
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(add-hook 'kill-emacs-hook 'delete-temp-dirs)
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(defun make-temp-dir (s)
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(let* ((prefix (expand-file-name s temp-file-dir))
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(dir (make-temp-name prefix)))
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(if (not (ignore-errors (make-directory dir t) t))
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(make-temp-dir prefix)
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(push dir temp-directories)
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dir)))
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(defun make-temp-file (s)
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(unless (file-name-absolute-p s)
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(unless (equal (user-uid)
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(third (file-attributes temporary-file-directory)))
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(setq temporary-file-directory (make-temp-dir "emacs")))
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(setq s (expand-file-name s temporary-file-directory)))
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(let ((file (make-temp-name s)))
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(write-region 1 1 file nil 'silent)
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file))
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;; defmap ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(defun custom-create-map (m bs args)
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(unless (keymapp m)
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(setq bs (append m bs))
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(setq m (make-sparse-keymap)))
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(dolist (b bs)
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(let ((key (car b))
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(binding (cdr b)))
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(cond
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((symbolp key)
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(substitute-key-definition key binding m global-map))
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((let ((o (lookup-key m key))) (or (null o) (numberp o)))
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(define-key m key binding)))))
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(while args
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(let ((key (first args))
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(val (second args)))
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(cond
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((eq key :inherit)
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(cond
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((keymapp val) (set-keymap-parent m val))
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(t (set-keymap-parents m val))))
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(t (error "Uknown argument %s in defmap" key))))
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(setq args (cddr args)))
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m)
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(defmacro defmap (m bs doc &rest args)
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`(defconst ,m
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(custom-create-map (if (boundp ',m) ,m) ,bs ,(cons 'list args))
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,doc))
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;; defsyntax ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(defun custom-create-syntax (css args)
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(let ((st (make-syntax-table (cadr (memq :copy args)))))
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(dolist (cs css)
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(let ((char (car cs))
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(syntax (cdr cs)))
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(if (sequencep char)
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(mapcar* (lambda (c) (modify-syntax-entry c syntax st)) char)
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(modify-syntax-entry char syntax st))))
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st))
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(defmacro defsyntax (st css doc &rest args)
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`(defconst ,st (custom-create-syntax ,css ,(cons 'list args)) doc))
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;;
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(provide 'sml-util)
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