Commit 0d20f9a0 authored by Jim Blandy's avatar Jim Blandy

Initial revision

parent 89758ab8
;; electric -- Window maker and Command loop for `electric' modes.
;; Copyright (C) 1985, 1986 Free Software Foundation, Inc.
;; Principal author K. Shane Hartman
;; This file is part of GNU Emacs.
;; GNU Emacs 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 1, or (at your option)
;; any later version.
;; GNU Emacs 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, 675 Mass Ave, Cambridge, MA 02139, USA.
(provide 'electric) ; zaaaaaaap
;; perhaps this should be in subr.el...
(defun shrink-window-if-larger-than-buffer (window)
(save-excursion
(set-buffer (window-buffer window))
(let ((w (selected-window)) ;save-window-excursion can't win
(buffer-file-name buffer-file-name)
(p (point))
(n 0)
(window-min-height 0)
(buffer-read-only nil)
(modified (buffer-modified-p))
(buffer (current-buffer)))
(unwind-protect
(progn
(select-window window)
(goto-char (point-min))
(while (pos-visible-in-window-p (point-max))
;; defeat file locking... don't try this at home, kids!
(setq buffer-file-name nil)
(insert ?\n) (setq n (1+ n)))
(if (> n 0) (shrink-window (1- n))))
(delete-region (point-min) (point))
(set-buffer-modified-p modified)
(goto-char p)
(select-window w)
;; Make sure we unbind buffer-read-only
;; with the proper current buffer.
(set-buffer buffer)))))
;; This loop is the guts for non-standard modes which retain control
;; until some event occurs. It is a `do-forever', the only way out is to
;; throw. It assumes that you have set up the keymap, window, and
;; everything else: all it does is read commands and execute them -
;; providing error messages should one occur (if there is no loop
;; function - which see). The required argument is a tag which should
;; expect a value of nil if the user decides to punt. The
;; second argument is a prompt string (defaults to "->"). Given third
;; argument non-nil, it INHIBITS quitting unless the user types C-g at
;; toplevel. This is so user can do things like C-u C-g and not get
;; thrown out. Fourth argument, if non-nil, should be a function of two
;; arguments which is called after every command is executed. The fifth
;; argument, if provided, is the state variable for the function. If the
;; loop-function gets an error, the loop will abort WITHOUT throwing
;; (moral: use unwind-protect around call to this function for any
;; critical stuff). The second argument for the loop function is the
;; conditions for any error that occurred or nil if none.
(defun Electric-command-loop (return-tag
&optional prompt inhibit-quit
loop-function loop-state)
(if (not prompt) (setq prompt "->"))
(let (cmd (err nil))
(while t
(setq cmd (read-key-sequence (if (stringp prompt)
prompt (funcall prompt))))
(setq last-command-char (aref cmd (1- (length cmd)))
this-command (key-binding cmd)
cmd this-command)
(if (or (prog1 quit-flag (setq quit-flag nil))
(= last-input-char ?\C-g))
(progn (setq unread-command-char -1
prefix-arg nil)
;; If it wasn't cancelling a prefix character, then quit.
(if (or (= (length (this-command-keys)) 1)
(not inhibit-quit)) ; safety
(progn (ding)
(message "Quit")
(throw return-tag nil))
(setq cmd nil))))
(setq current-prefix-arg prefix-arg)
(if cmd
(condition-case conditions
(progn (command-execute cmd)
(if (or (prog1 quit-flag (setq quit-flag nil))
(= last-input-char ?\C-g))
(progn (setq unread-command-char -1)
(if (not inhibit-quit)
(progn (ding)
(message "Quit")
(throw return-tag nil))
(ding)))))
(buffer-read-only (if loop-function
(setq err conditions)
(ding)
(message "Buffer is read-only")
(sit-for 2)))
(beginning-of-buffer (if loop-function
(setq err conditions)
(ding)
(message "Beginning of Buffer")
(sit-for 2)))
(end-of-buffer (if loop-function
(setq err conditions)
(ding)
(message "End of Buffer")
(sit-for 2)))
(error (if loop-function
(setq err conditions)
(ding)
(message "Error: %s"
(if (eq (car conditions) 'error)
(car (cdr conditions))
(prin1-to-string conditions)))
(sit-for 2))))
(ding))
(if loop-function (funcall loop-function loop-state err))))
(ding)
(throw return-tag nil))
;; This function is like pop-to-buffer, sort of.
;; The algorithm is
;; If there is a window displaying buffer
;; Select it
;; Else if there is only one window
;; Split it, selecting the window on the bottom with height being
;; the lesser of max-height (if non-nil) and the number of lines in
;; the buffer to be displayed subject to window-min-height constraint.
;; Else
;; Switch to buffer in the current window.
;;
;; Then if max-height is nil, and not all of the lines in the buffer
;; are displayed, grab the whole screen.
;;
;; Returns selected window on buffer positioned at point-min.
(defun Electric-pop-up-window (buffer &optional max-height)
(let* ((win (or (get-buffer-window buffer) (selected-window)))
(buf (get-buffer buffer))
(one-window (one-window-p t))
(pop-up-windows t)
(target-height)
(lines))
(if (not buf)
(error "Buffer %s does not exist" buffer)
(save-excursion
(set-buffer buf)
(setq lines (count-lines (point-min) (point-max)))
(setq target-height
(min (max (if max-height (min max-height (1+ lines)) (1+ lines))
window-min-height)
(save-window-excursion
(delete-other-windows)
(1- (window-height (selected-window)))))))
(cond ((and (eq (window-buffer win) buf))
(select-window win))
(one-window
(goto-char (window-start win))
(pop-to-buffer buffer)
(setq win (selected-window))
(enlarge-window (- target-height (window-height win))))
(t
(switch-to-buffer buf)))
(if (and (not max-height)
(> target-height (window-height (selected-window))))
(progn (goto-char (window-start win))
(enlarge-window (- target-height (window-height win)))))
(goto-char (point-min))
win)))
;; Run-time support for mocklisp code.
;; Copyright (C) 1985 Free Software Foundation, Inc.
;; This file is part of GNU Emacs.
;; GNU Emacs 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 1, or (at your option)
;; any later version.
;; GNU Emacs 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, 675 Mass Ave, Cambridge, MA 02139, USA.
(provide 'mlsupport)
(defmacro ml-defun (&rest defs)
(list 'ml-defun-1 (list 'quote defs)))
(defun ml-defun-1 (args)
(while args
(fset (car (car args)) (cons 'mocklisp (cdr (car args))))
(setq args (cdr args))))
(defmacro declare-buffer-specific (&rest vars)
(cons 'progn (mapcar (function (lambda (var) (list 'make-variable-buffer-local (list 'quote var)))) vars)))
(defun ml-set-default (varname value)
(set-default (intern varname) value))
; Lossage: must make various things default missing args to the prefix arg
; Alternatively, must make provide-prefix-argument do something hairy.
(defun >> (val count) (lsh val (- count)))
(defun novalue () nil)
(defun ml-not (arg) (if (zerop arg) 1 0))
(defun provide-prefix-arg (arg form)
(funcall (car form) arg))
(defun define-keymap (name)
(fset (intern name) (make-keymap)))
(defun ml-use-local-map (name)
(use-local-map (intern (concat name "-map"))))
(defun ml-use-global-map (name)
(use-global-map (intern (concat name "-map"))))
(defun local-bind-to-key (name key)
(or (current-local-map)
(use-local-map (make-keymap)))
(define-key (current-local-map)
(if (integerp key)
(if (>= key 128)
(concat (char-to-string meta-prefix-char)
(char-to-string (- key 128)))
(char-to-string key))
key)
(intern name)))
(defun bind-to-key (name key)
(define-key global-map (if (integerp key) (char-to-string key) key)
(intern name)))
(defun ml-autoload (name file)
(autoload (intern name) file))
(defun ml-define-string-macro (name defn)
(fset (intern name) defn))
(defun push-back-character (char)
(setq unread-command-char char))
(defun to-col (column)
(indent-to column 0))
(defmacro is-bound (&rest syms)
(cons 'and (mapcar (function (lambda (sym) (list 'boundp (list 'quote sym)))) syms)))
(defmacro declare-global (&rest syms)
(cons 'progn (mapcar (function (lambda (sym) (list 'defvar sym nil))) syms)))
(defmacro error-occurred (&rest body)
(list 'condition-case nil (cons 'progn (append body '(nil))) '(error t)))
(defun return-prefix-argument (value)
(setq prefix-arg value))
(defun ml-prefix-argument ()
(if (null current-prefix-arg) 1
(if (listp current-prefix-arg) (car current-prefix-arg)
(if (eq current-prefix-arg '-) -1
current-prefix-arg))))
(defun ml-print (varname)
(interactive "vPrint variable: ")
(if (boundp varname)
(message "%s => %s" (symbol-name varname) (symbol-value varname))
(message "%s has no value" (symbol-name varname))))
(defun ml-set (str val) (set (intern str) val))
(defun ml-message (&rest args) (message "%s" (apply 'concat args)))
(defun kill-to-end-of-line ()
(ml-prefix-argument-loop
(if (eolp)
(kill-region (point) (1+ (point)))
(kill-region (point) (if (search-forward ?\n nil t)
(1- (point)) (point-max))))))
(defun set-auto-fill-hook (arg)
(setq auto-fill-function (intern arg)))
(defun auto-execute (function pattern)
(if (/= (aref pattern 0) ?*)
(error "Only patterns starting with * supported in auto-execute"))
(setq auto-mode-alist (cons (cons (concat "\\." (substring pattern 1)
"$")
function)
auto-mode-alist)))
(defun move-to-comment-column ()
(indent-to comment-column))
(defun erase-region ()
(delete-region (point) (mark)))
(defun delete-region-to-buffer (bufname)
(copy-to-buffer bufname (point) (mark))
(delete-region (point) (mark)))
(defun copy-region-to-buffer (bufname)
(copy-to-buffer bufname (point) (mark)))
(defun append-region-to-buffer (bufname)
(append-to-buffer bufname (point) (mark)))
(defun prepend-region-to-buffer (bufname)
(prepend-to-buffer bufname (point) (mark)))
(defun delete-next-character ()
(delete-char (ml-prefix-argument)))
(defun delete-next-word ()
(delete-region (point) (progn (forward-word (ml-prefix-argument)) (point))))
(defun delete-previous-word ()
(delete-region (point) (progn (backward-word (ml-prefix-argument)) (point))))
(defun delete-previous-character ()
(delete-backward-char (ml-prefix-argument)))
(defun forward-character ()
(forward-char (ml-prefix-argument)))
(defun backward-character ()
(backward-char (ml-prefix-argument)))
(defun ml-newline ()
(newline (ml-prefix-argument)))
(defun ml-next-line ()
(next-line (ml-prefix-argument)))
(defun ml-previous-line ()
(previous-line (ml-prefix-argument)))
(defun delete-to-kill-buffer ()
(kill-region (point) (mark)))
(defun narrow-region ()
(narrow-to-region (point) (mark)))
(defun ml-newline-and-indent ()
(let ((column (current-indentation)))
(newline (ml-prefix-argument))
(indent-to column)))
(defun newline-and-backup ()
(open-line (ml-prefix-argument)))
(defun quote-char ()
(quoted-insert (ml-prefix-argument)))
(defun ml-current-column ()
(1+ (current-column)))
(defun ml-current-indent ()
(1+ (current-indentation)))
(defun region-around-match (&optional n)
(set-mark (match-beginning n))
(goto-char (match-end n)))
(defun region-to-string ()
(buffer-substring (min (point) (mark)) (max (point) (mark))))
(defun use-abbrev-table (name)
(let ((symbol (intern (concat name "-abbrev-table"))))
(or (boundp symbol)
(define-abbrev-table symbol nil))
(symbol-value symbol)))
(defun define-hooked-local-abbrev (name exp hook)
(define-local-abbrev name exp (intern hook)))
(defun define-hooked-global-abbrev (name exp hook)
(define-global-abbrev name exp (intern hook)))
(defun case-word-lower ()
(ml-casify-word 'downcase-region))
(defun case-word-upper ()
(ml-casify-word 'upcase-region))
(defun case-word-capitalize ()
(ml-casify-word 'capitalize-region))
(defun ml-casify-word (fun)
(save-excursion
(forward-char 1)
(forward-word -1)
(funcall fun (point)
(progn (forward-word (ml-prefix-argument))
(point)))))
(defun case-region-lower ()
(downcase-region (point) (mark)))
(defun case-region-upper ()
(upcase-region (point) (mark)))
(defun case-region-capitalize ()
(capitalize-region (point) (mark)))
(defvar saved-command-line-args nil)
(defun argc ()
(or saved-command-line-args
(setq saved-command-line-args command-line-args
command-line-args ()))
(length command-line-args))
(defun argv (i)
(or saved-command-line-args
(setq saved-command-line-args command-line-args
command-line-args ()))
(nth i saved-command-line-args))
(defun invisible-argc ()
(length (or saved-command-line-args
command-line-args)))
(defun invisible-argv (i)
(nth i (or saved-command-line-args
command-line-args)))
(defun exit-emacs ()
(interactive)
(condition-case ()
(exit-recursive-edit)
(error (kill-emacs))))
;; Lisp function buffer-size returns total including invisible;
;; mocklisp wants just visible.
(defun ml-buffer-size ()
(- (point-max) (point-min)))
(defun previous-command ()
last-command)
(defun beginning-of-window ()
(goto-char (window-start)))
(defun end-of-window ()
(goto-char (window-start))
(vertical-motion (- (window-height) 2)))
(defun ml-search-forward (string)
(search-forward string nil nil (ml-prefix-argument)))
(defun ml-re-search-forward (string)
(re-search-forward string nil nil (ml-prefix-argument)))
(defun ml-search-backward (string)
(search-backward string nil nil (ml-prefix-argument)))
(defun ml-re-search-backward (string)
(re-search-backward string nil nil (ml-prefix-argument)))
(defvar use-users-shell 1
"Mocklisp compatibility variable; 1 means use shell from SHELL env var.
0 means use /bin/sh.")
(defvar use-csh-option-f 1
"Mocklisp compatibility variable; 1 means pass -f when calling csh.")
(defun filter-region (command)
(let ((shell (if (/= use-users-shell 0) shell-file-name "/bin/sh"))
(csh (equal (file-name-nondirectory shell) "csh")))
(call-process-region (point) (mark) shell t t nil
(if (and csh use-csh-option-f) "-cf" "-c")
(concat "exec " command))))
(defun execute-monitor-command (command)
(let ((shell (if (/= use-users-shell 0) shell-file-name "/bin/sh"))
(csh (equal (file-name-nondirectory shell) "csh")))
(call-process shell nil t t
(if (and csh use-csh-option-f) "-cf" "-c")
(concat "exec " command))))
(defun use-syntax-table (name)
(set-syntax-table (symbol-value (intern (concat name "-syntax-table")))))
(defun line-to-top-of-window ()
(recenter (1- (ml-prefix-argument))))
(defun ml-previous-page (&optional arg)
(let ((count (or arg (ml-prefix-argument))))
(while (> count 0)
(scroll-down nil)
(setq count (1- count)))
(while (< count 0)
(scroll-up nil)
(setq count (1+ count)))))
(defun ml-next-page ()
(previous-page (- (ml-prefix-argument))))
(defun page-next-window (&optional arg)
(let ((count (or arg (ml-prefix-argument))))
(while (> count 0)
(scroll-other-window nil)
(setq count (1- count)))
(while (< count 0)
(scroll-other-window '-)
(setq count (1+ count)))))
(defun ml-next-window ()
(select-window (next-window)))
(defun ml-previous-window ()
(select-window (previous-window)))
(defun scroll-one-line-up ()
(scroll-up (ml-prefix-argument)))
(defun scroll-one-line-down ()
(scroll-down (ml-prefix-argument)))
(defun split-current-window ()
(split-window (selected-window)))
(defun last-key-struck () last-command-char)
(defun execute-mlisp-line (string)
(eval (read string)))
(defun move-dot-to-x-y (x y)
(goto-char (window-start (selected-window)))
(vertical-motion (1- y))
(move-to-column (1- x)))
(defun ml-modify-syntax-entry (string)
(let ((i 5)
(len (length string))
(datastring (substring string 0 2)))
(if (= (aref string 0) ?\-)
(aset datastring 0 ?\ ))
(if (= (aref string 2) ?\{)
(if (= (aref string 4) ?\ )
(aset datastring 0 ?\<)
(error "Two-char comment delimiter: use modify-syntax-entry directly")))
(if (= (aref string 3) ?\})
(if (= (aref string 4) ?\ )
(aset datastring 0 ?\>)
(error "Two-char comment delimiter: use modify-syntax-entry directly")))
(while (< i len)
(modify-syntax-entry (aref string i) datastring)
(setq i (1+ i))
(if (and (< i len)
(= (aref string i) ?\-))
(let ((c (aref string (1- i)))
(lim (aref string (1+ i))))
(while (<= c lim)
(modify-syntax-entry c datastring)
(setq c (1+ c)))
(setq i (+ 2 i)))))))
(defun ml-substr (string from to)
(let ((length (length string)))
(if (< from 0) (setq from (+ from length)))
(if (< to 0) (setq to (+ to length)))
(substring string from (+ from to))))
;; Load this file to add a new level (starting at zero)
;; to the Emacs version number recorded in version.el.
;; Copyright (C) 1985 Free Software Foundation, Inc.
;; This file is part of GNU Emacs.
;; GNU Emacs 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 1, or (at your option)
;; any later version.
;; GNU Emacs 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, 675 Mass Ave, Cambridge, MA 02139, USA.
(insert-file-contents "lisp/version.el")