0
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1 ;;; mlsupport.el --- run-time support for mocklisp code.
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2
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3 ;; Copyright (C) 1985 Free Software Foundation, Inc.
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4
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5 ;; Maintainer: FSF
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6 ;; Keywords: extensions
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7
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8 ;; This file is part of XEmacs.
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9
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10 ;; XEmacs is free software; you can redistribute it and/or modify it
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11 ;; under the terms of the GNU General Public License as published by
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12 ;; the Free Software Foundation; either version 2, or (at your option)
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13 ;; any later version.
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14
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15 ;; XEmacs is distributed in the hope that it will be useful, but
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16 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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18 ;; General Public License for more details.
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19
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20 ;; You should have received a copy of the GNU General Public License
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21 ;; along with XEmacs; see the file COPYING. If not, write to the Free
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22 ;; Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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23
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24 ;;; Synched up with: FSF 19.30.
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25
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26 ;;; Commentary:
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27
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28 ;; This package provides equivalents of certain primitives from Gosling
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29 ;; Emacs (including the commercial UniPress versions). These have an
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30 ;; ml- prefix to distinguish them from native GNU Emacs functions with
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31 ;; similar names. The oackage mlconvert.el translates Mocklisp code
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32 ;; to use these names.
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33
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34 ;;; Code:
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35
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36 (or (fboundp 'ml-prefix-argument-loop)
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37 (error "emacs was not compiled with #define MOCKLISP_SUPPORT in config.h"))
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38
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39 (defmacro ml-defun (&rest defs)
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40 (list 'ml-defun-1 (list 'quote defs)))
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41
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42 (defun ml-defun-1 (args)
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43 (while args
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44 (fset (car (car args)) (cons 'mocklisp (cdr (car args))))
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45 (setq args (cdr args))))
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46
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47 (defmacro declare-buffer-specific (&rest vars)
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48 (cons 'progn
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49 (mapcar (function (lambda (var)
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50 (list 'make-variable-buffer-local (list 'quote var))))
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51 vars)))
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52
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53 (defun ml-set-default (varname value)
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54 (set-default (intern varname) value))
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55
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56 ; Lossage: must make various things default missing args to the prefix arg
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57 ; Alternatively, must make provide-prefix-argument do something hairy.
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58
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59 (defun >> (val count)
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60 (lsh val (- count)))
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61 (defun novalue ()
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62 nil)
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63
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64 (defun ml-not (arg)
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65 (if (zerop arg) 1 0))
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66
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67 (defun provide-prefix-arg (arg form)
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68 (funcall (car form) arg))
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69
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70 (defun define-keymap (name)
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71 (fset (intern name) (make-keymap)))
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72
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73 (defun ml-use-local-map (name)
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74 (use-local-map (intern (concat name "-map"))))
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75
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76 (defun ml-use-global-map (name)
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77 (use-global-map (intern (concat name "-map"))))
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78
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79 (defun local-bind-to-key (name key)
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80 (or (current-local-map)
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81 (use-local-map (make-keymap)))
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82 (define-key (current-local-map)
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83 (if (integerp key)
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84 (if (>= key 128)
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85 (concat (char-to-string meta-prefix-char)
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86 (char-to-string (- key 128)))
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87 (char-to-string key))
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88 key)
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89 (intern name)))
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90
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91 (defun bind-to-key (name key)
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92 (define-key global-map (if (integerp key) (char-to-string key) key)
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93 (intern name)))
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94
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95 (defun ml-autoload (name file)
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96 (autoload (intern name) file))
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97
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98 (defun ml-define-string-macro (name defn)
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99 (fset (intern name) defn))
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100
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101 (defun push-back-character (char)
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102 (setq unread-command-event (character-to-event char)))
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103
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104 (defun to-col (column)
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105 (indent-to column 0))
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106
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107 (defmacro is-bound (&rest syms)
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108 (cons 'and (mapcar (function (lambda (sym) (list 'boundp (list 'quote sym)))) syms)))
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109
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110 (defmacro declare-global (&rest syms)
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111 (cons 'progn (mapcar (function (lambda (sym) (list 'defvar sym nil))) syms)))
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112
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113 (defmacro error-occurred (&rest body)
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114 (list 'condition-case nil (cons 'progn (append body '(nil))) '(error t)))
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115
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116 (defun return-prefix-argument (value)
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117 (setq prefix-arg value))
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118
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119 (defun ml-prefix-argument ()
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120 (cond ((null current-prefix-arg)
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121 1)
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122 ((listp current-prefix-arg)
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123 (car current-prefix-arg))
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124 ((eq current-prefix-arg '-)
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125 -1)
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126 (t
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127 current-prefix-arg)))
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128
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129 (defun ml-print (varname)
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130 (interactive "vPrint variable: ")
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131 (if (boundp varname)
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132 (message "%s => %s" (symbol-name varname) (symbol-value varname))
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133 (message "%s has no value" (symbol-name varname))))
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134
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135 (defun ml-set (str val) (set (intern str) val))
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136
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137 (defun ml-message (&rest args) (message "%s" (apply 'concat args)))
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138
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139 (defun kill-to-end-of-line ()
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140 (ml-prefix-argument-loop
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141 (if (eolp)
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142 (kill-region (point) (1+ (point)))
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143 (kill-region (point) (if (search-forward ?\n nil t)
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144 (1- (point)) (point-max))))))
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145
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146 (defun set-auto-fill-hook (arg)
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147 (setq auto-fill-function (intern arg)))
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148
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149 (defun auto-execute (function pattern)
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150 (if (/= (aref pattern 0) ?*)
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151 (error "Only patterns starting with * supported in auto-execute"))
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152 (setq auto-mode-alist (cons (cons (concat "\\." (substring pattern 1)
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153 "\\'")
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154 function)
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155 auto-mode-alist)))
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156
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157 (defun move-to-comment-column ()
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158 (indent-to comment-column))
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159
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160 (defun erase-region ()
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161 (delete-region (point) (mark)))
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162
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163 (defun delete-region-to-buffer (bufname)
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164 (copy-to-buffer bufname (point) (mark))
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165 (delete-region (point) (mark)))
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166
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167 (defun copy-region-to-buffer (bufname)
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168 (copy-to-buffer bufname (point) (mark)))
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169
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170 (defun append-region-to-buffer (bufname)
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171 (append-to-buffer bufname (point) (mark)))
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172
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173 (defun prepend-region-to-buffer (bufname)
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174 (prepend-to-buffer bufname (point) (mark)))
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175
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176 (defun delete-next-character ()
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177 (delete-char (ml-prefix-argument)))
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178
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179 (defun delete-next-word ()
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180 (delete-region (point)
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181 (progn (forward-word (ml-prefix-argument)) (point))))
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182
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183 (defun delete-previous-word ()
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184 (delete-region (point)
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185 (progn (backward-word (ml-prefix-argument)) (point))))
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186
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187 (defun delete-previous-character ()
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188 (delete-backward-char (ml-prefix-argument)))
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189
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190 (defun forward-character ()
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191 (forward-char (ml-prefix-argument)))
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192
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193 (defun backward-character ()
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194 (backward-char (ml-prefix-argument)))
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195
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196 (defun ml-newline ()
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197 (newline (ml-prefix-argument)))
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198
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199 (defun ml-next-line ()
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200 (next-line (ml-prefix-argument)))
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201
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202 (defun ml-previous-line ()
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203 (previous-line (ml-prefix-argument)))
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204
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205 (defun delete-to-kill-buffer ()
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206 (kill-region (point) (mark)))
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207
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208 (defun narrow-region ()
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209 (narrow-to-region (point) (mark)))
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210
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211 (defun ml-newline-and-indent ()
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212 (let ((column (current-indentation)))
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213 (newline (ml-prefix-argument))
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214 (indent-to column)))
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215
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216 (defun newline-and-backup ()
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217 (open-line (ml-prefix-argument)))
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218
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219 (defun quote-char ()
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220 (quoted-insert (ml-prefix-argument)))
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221
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222 (defun ml-current-column ()
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223 (1+ (current-column)))
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224
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225 (defun ml-current-indent ()
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226 (1+ (current-indentation)))
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227
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228 (defun region-around-match (&optional n)
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229 (set-mark (match-beginning n))
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230 (goto-char (match-end n)))
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231
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232 (defun region-to-string ()
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233 (buffer-substring (min (point) (mark)) (max (point) (mark))))
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234
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235 (defun use-abbrev-table (name)
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236 (let ((symbol (intern (concat name "-abbrev-table"))))
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237 (or (boundp symbol)
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238 (define-abbrev-table symbol nil))
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239 (symbol-value symbol)))
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240
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241 (defun define-hooked-local-abbrev (name exp hook)
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242 (define-abbrev (or local-abbrev-table
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243 (error "Major mode has no abbrev table"))
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244 (downcase name)
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245 exp (intern hook)))
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246
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247 (defun define-hooked-global-abbrev (name exp hook)
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248 (define-abbrev global-abbrev-table (downcase name)
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249 exp (intern hook)))
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250
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251 (defun case-word-lower ()
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252 (ml-casify-word 'downcase-region))
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253
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254 (defun case-word-upper ()
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255 (ml-casify-word 'upcase-region))
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256
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257 (defun case-word-capitalize ()
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258 (ml-casify-word 'capitalize-region))
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259
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260 (defun ml-casify-word (fun)
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261 (save-excursion
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262 (forward-char 1)
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263 (forward-word -1)
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264 (funcall fun (point)
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265 (progn (forward-word (ml-prefix-argument))
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266 (point)))))
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267
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268 (defun case-region-lower ()
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269 (downcase-region (point) (mark)))
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270
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271 (defun case-region-upper ()
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272 (upcase-region (point) (mark)))
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273
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274 (defun case-region-capitalize ()
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275 (capitalize-region (point) (mark)))
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276
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277 (defvar saved-command-line-args nil)
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278
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279 (defun argc ()
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280 (or saved-command-line-args
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281 (setq saved-command-line-args command-line-args
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282 command-line-args ()))
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283 (length command-line-args))
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284
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285 (defun argv (i)
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286 (or saved-command-line-args
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287 (setq saved-command-line-args command-line-args
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288 command-line-args ()))
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289 (nth i saved-command-line-args))
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290
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291 (defun invisible-argc ()
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292 (length (or saved-command-line-args
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293 command-line-args)))
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294
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295 (defun invisible-argv (i)
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296 (nth i (or saved-command-line-args
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297 command-line-args)))
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298
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299 (defun exit-emacs ()
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300 (interactive)
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301 (condition-case ()
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302 (exit-recursive-edit)
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303 (error (kill-emacs))))
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304
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305 ;; Lisp function buffer-size returns total including invisible;
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306 ;; mocklisp wants just visible.
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307 (defun ml-buffer-size ()
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308 (- (point-max) (point-min)))
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309
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310 (defun previous-command ()
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311 last-command)
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312
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313 (defun beginning-of-window ()
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314 (goto-char (window-start)))
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315
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316 (defun end-of-window ()
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317 (goto-char (window-start))
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318 (vertical-motion (- (window-height) 2)))
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319
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320 (defun ml-search-forward (string)
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321 (search-forward string nil nil (ml-prefix-argument)))
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322
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323 (defun ml-re-search-forward (string)
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324 (re-search-forward string nil nil (ml-prefix-argument)))
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325
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326 (defun ml-search-backward (string)
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327 (search-backward string nil nil (ml-prefix-argument)))
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328
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329 (defun ml-re-search-backward (string)
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330 (re-search-backward string nil nil (ml-prefix-argument)))
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331
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332 (defvar use-users-shell 1
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333 "Mocklisp compatibility variable; 1 means use shell from SHELL env var.
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334 0 means use /bin/sh.")
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335
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336 (defvar use-csh-option-f 1
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337 "Mocklisp compatibility variable; 1 means pass -f when calling csh.")
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338
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339 (defun filter-region (command)
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340 (let* ((shell (if (/= use-users-shell 0) shell-file-name "/bin/sh"))
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341 (csh (equal (file-name-nondirectory shell) "csh")))
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342 (call-process-region (point) (mark) shell t t nil
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343 (if (and csh use-csh-option-f) "-cf" "-c")
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344 (concat "exec " command))))
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345
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346 (defun execute-monitor-command (command)
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347 (let* ((shell (if (/= use-users-shell 0) shell-file-name "/bin/sh"))
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348 (csh (equal (file-name-nondirectory shell) "csh")))
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349 (call-process shell nil t t
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350 (if (and csh use-csh-option-f) "-cf" "-c")
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351 (concat "exec " command))))
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352
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353 (defun use-syntax-table (name)
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354 (set-syntax-table (symbol-value (intern (concat name "-syntax-table")))))
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355
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356 (defun line-to-top-of-window ()
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357 (recenter (1- (ml-prefix-argument))))
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358
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359 (defun ml-previous-page (&optional arg)
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360 (let ((count (or arg (ml-prefix-argument))))
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361 (while (> count 0)
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362 (scroll-down nil)
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363 (setq count (1- count)))
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364 (while (< count 0)
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365 (scroll-up nil)
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366 (setq count (1+ count)))))
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367
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368 (defun ml-next-page ()
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369 (ml-previous-page (- (ml-prefix-argument))))
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370
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371 (defun page-next-window (&optional arg)
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372 (let ((count (or arg (ml-prefix-argument))))
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373 (while (> count 0)
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374 (scroll-other-window nil)
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375 (setq count (1- count)))
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376 (while (< count 0)
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377 (scroll-other-window '-)
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378 (setq count (1+ count)))))
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379
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380 (defun ml-next-window ()
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381 (select-window (next-window)))
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382
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383 (defun ml-previous-window ()
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384 (select-window (previous-window)))
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385
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386 (defun scroll-one-line-up ()
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387 (scroll-up (ml-prefix-argument)))
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388
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389 (defun scroll-one-line-down ()
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390 (scroll-down (ml-prefix-argument)))
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391
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392 (defun split-current-window ()
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393 (split-window (selected-window)))
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394
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395 (defun last-key-struck () last-command-char)
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396
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397 (defun execute-mlisp-line (string)
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398 (eval (read string)))
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399
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400 (defun move-dot-to-x-y (x y)
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401 (goto-char (window-start (selected-window)))
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402 (vertical-motion (1- y))
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403 (move-to-column (1- x)))
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404
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405 (defun ml-modify-syntax-entry (string)
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406 (let ((i 5)
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407 (len (length string))
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408 (datastring (substring string 0 2)))
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409 (if (= (aref string 0) ?\-)
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410 (aset datastring 0 ?\ ))
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411 (if (= (aref string 2) ?\{)
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412 (if (= (aref string 4) ?\ )
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413 (aset datastring 0 ?\<)
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414 (error "Two-char comment delimiter: use modify-syntax-entry directly")))
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415 (if (= (aref string 3) ?\})
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416 (if (= (aref string 4) ?\ )
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417 (aset datastring 0 ?\>)
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418 (error "Two-char comment delimiter: use modify-syntax-entry directly")))
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419 (while (< i len)
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420 (modify-syntax-entry (aref string i) datastring)
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421 (setq i (1+ i))
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422 (if (and (< i len)
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423 (= (aref string i) ?\-))
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424 (let ((c (aref string (1- i)))
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425 (lim (aref string (1+ i))))
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426 (while (<= c lim)
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427 (modify-syntax-entry c datastring)
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428 (setq c (1+ c)))
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429 (setq i (+ 2 i)))))))
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430
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431
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432
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433 (defun ml-substr (string from to)
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434 (let ((length (length string)))
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435 (if (< from 0) (setq from (+ from length)))
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436 (if (< to 0) (setq to (+ to length)))
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437 (substring string from (+ from to))))
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438
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439
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440 (defun ml-nargs ()
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441 "Number of arguments to currently executing mocklisp function."
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442 (if (eq mocklisp-arguments 'interactive)
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443 0
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444 (length mocklisp-arguments)))
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445
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446 (defun ml-arg (n prompt)
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447 "Argument number N to currently executing mocklisp function."
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448 (if (eq mocklisp-arguments 'interactive)
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449 (read-from-minibuffer prompt)
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450 ;; Mocklisp likes to be origin 1
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451 (elt mocklisp-arguments (1- n))))
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452
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453 (defun ml-interactive ()
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454 "True if currently executing mocklisp function was called interactively."
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455 (eq mocklisp-arguments 'interactive))
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456
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457 ;; Now in subr.el, because too many loser call it.
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458 ;(defun insert-string (&rest args)
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459 ; "Mocklisp-compatibility insert function.
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460 ;Like the function `insert' except that any argument that is a number
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461 ;is converted into a string by expressing it in decimal. (Yuck!!)"
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462 ; (while args
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463 ; (let ((arg (car args)))
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464 ; (if (integerp arg)
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465 ; (insert (number-to-string arg))
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466 ; (insert arg))
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467 ; (setq args (cdr args)))))
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468
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469 (defun ml-concat (&rest args)
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470 (let ((newargs nil) this)
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471 (while args
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472 (setq this (car args))
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473 (if (numberp this)
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474 (setq this (number-to-string this)))
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475 (setq newargs (cons this newargs)
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476 args (cdr args)))
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477 (apply 'concat (nreverse newargs))))
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478
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479
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480 ;;; Lose, please. None of these should be used in non-automatically-converted
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481 ;;; code, so issue compilation warnings in case someone is using them because
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482 ;;; they don't know any better.
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483
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484 (make-obsolete 'read-no-blanks-input 'read-string)
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485 (make-obsolete 'declare-buffer-specific 'make-variable-buffer-local)
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486 (make-obsolete '>> 'lsh)
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487 (make-obsolete 'novalue 'ignore)
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488 (make-obsolete 'define-keymap "use (fset 'symbol (make-keymap))")
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489 (make-obsolete 'local-bind-to-key 'local-set-key)
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490 (make-obsolete 'bind-to-key 'global-set-key)
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491 (make-obsolete 'to-col 'indent-to)
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492 (make-obsolete 'is-bound 'boundp)
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493 (make-obsolete 'declare-global 'defvar)
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494 (make-obsolete 'error-occurred 'condition-case)
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495 (make-obsolete 'set-auto-fill-hook "set variable auto-fill-function instead")
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496 (make-obsolete 'auto-execute "set variable auto-mode-alist instead")
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497 (make-obsolete 'move-to-comment-column "use (indent-to comment-column)")
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498 (make-obsolete 'erase-region 'delete-region)
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499 (make-obsolete 'delete-region-to-buffer "use copy-to-buffer and delete-region")
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500 (make-obsolete 'copy-region-to-buffer 'copy-to-buffer)
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501 (make-obsolete 'append-region-to-buffer 'append-to-buffer)
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502 (make-obsolete 'prepend-region-to-buffer 'prepend-to-buffer)
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503 (make-obsolete 'delete-next-character 'delete-char)
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504 (make-obsolete 'forward-character 'forward-char)
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505 (make-obsolete 'backward-character 'backward-char)
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506 (make-obsolete 'delete-to-kill-buffer 'kill-region)
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507 (make-obsolete 'narrow-region 'narrow-to-region)
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508 (make-obsolete 'newline-and-backup 'open-line)
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|
509 (make-obsolete 'quote-char 'quoted-insert)
|
|
510 (make-obsolete 'region-to-string 'buffer-substring)
|
|
511 (make-obsolete 'define-hooked-local-abbrev 'define-abbrev)
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512 (make-obsolete 'define-hooked-global-abbrev 'define-abbrev)
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|
513 (make-obsolete 'filter-region 'call-process-region)
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514 (make-obsolete 'execute-monitor-command 'call-process)
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|
515 (make-obsolete 'use-syntax-table 'set-syntax-table)
|
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516 (make-obsolete 'line-to-top-of-window 'recenter)
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|
517 (make-obsolete 'insert-string 'insert)
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518
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519 (provide 'mlsupport)
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520
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521 ;;; mlsupport.el ends here
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