;;; mlsupport.el --- run-time support for mocklisp code ;; Copyright (C) 1985 Free Software Foundation, Inc. ;; Maintainer: FSF ;; Keywords: extensions ;; 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 2, 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, Inc., 59 Temple Place - Suite 330, ;; Boston, MA 02111-1307, USA. ;;; Commentary: ;; This package provides equivalents of certain primitives from Gosling ;; Emacs (including the commercial UniPress versions). These have an ;; ml- prefix to distinguish them from native GNU Emacs functions with ;; similar names. The package mlconvert.el translates Mocklisp code ;; to use these names. ;;; Code: (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))) ;; Make it work to use ml-use-...-map on "esc" and such. (fset 'esc-map esc-map) (fset 'ctl-x-map ctl-x-map) (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-events (list 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-abbrev local-abbrev-table name exp (intern hook))) (defun define-hooked-global-abbrev (name exp hook) (define-abbrev global-abbrev-table 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)))) (defun ml-concat (&rest args) (let ((newargs nil) this) (while args (setq this (car args)) (if (numberp this) (setq this (number-to-string this))) (setq newargs (cons this newargs) args (cdr args))) (apply 'concat (nreverse newargs)))) (provide 'mlsupport) ;;; mlsupport.el ends here