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1 ;;; -*- Mode: lisp -*-
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2
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3 ; load in the c functions
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4
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5 (removeaddress '_signal)
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6 (removeaddress '_switch_to_proc)
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7 (removeaddress '_set_proc_str)
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8
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9 (cfasl "/src/mdc/ledit/leditcfns.o" '_switch_to_proc 'emacs)
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10
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11 (getaddress '_set_proc_str 'set_proc_str)
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12
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13 (declare (special *ledit-infile* ; emacs->lisp tempfile
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14 *ledit-outfile* ; lisp->emacs tempfile
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15 *ledit-ppfile* ; pp->emacs tempfile
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16 *ledit-lisztfile* ; compiler input
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17 *ledit-objfile* ; compiler output
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18 *ledit-initialized*) ; flag
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19 )
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20
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21 (setq *ledit-initialized* nil)
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22
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23 ;;; INIT-LEDIT
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24
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25 (defun init-ledit ()
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26 (let ((user (getenv '|USER|))) ;USER must be uppercase
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27 (setq
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28 *ledit-outfile* (concat "/tmp/" user ".l2") ; lisp -> emacs
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29 *ledit-infile* (concat "/tmp/" user ".l1") ; emacs -> lisp
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30 *ledit-ppfile* (concat "/tmp/" user ".l3") ; pp output to emacs.
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31 *ledit-lisztfile* (concat "/tmp/" user ".l4")
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32 *ledit-objfile* (concat "/tmp/" user ".o")
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33 *ledit-initialized* t)))
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34
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35 ;;; LEDIT
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36 ; if 1 arg, arg is taken as a tag name to pass to emacs.
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37 ; if 2 args, second arg is a keyword. If 2nd arg is pp,
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38 ; pp is applied to first arg, and result is sent to emacs
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39 ; to put in a buffer called LEDIT (which is first erased.)
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40
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41 (defun ledit fexpr (args)
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42 (apply #'ledit* args))
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43
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44 ;;; LEDIT*
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45
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46 (defun ledit* n
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47 (if (not *ledit-initialized*) (init-ledit))
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48 (ledit-output (listify n))
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49 (syscall 10. *ledit-infile*) ; syscall 10 is "delete"
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50 (syscall 10. *ledit-lisztfile*)
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51 (emacs)
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52 (ledit-input)
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53 (syscall 10. *ledit-outfile*)
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54 (syscall 10. *ledit-ppfile*)
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55 t)
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56
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57 ;;; LEDIT-OUTPUT
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58 ;;; Egad, what a mess! Doesn't work for XEMACS yet.
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59 ;;; Here's an example from Mocklisp:
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60 ;;; -> (defun bar (nothing) (bar nothing))
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61 ;;; bar
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62 ;;; -> (ledit bar)
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63 ;;; should produce...
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64 ;;; (progn) (progn tag (setq tag "bar") (&goto-tag))
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65 ;;; and
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66 ;;; -> (ledit bar pp)
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67 ;;; should stuff this to emacs...
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68 ;;; (progn) (switch-to-buffer "LEDIT") (erase-buffer)
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69 ;;; (insert-file "/tmp/walter.l3") (lisp-mode)
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70 ;;; and this...
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71 ;;; (def bar
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72 ;;; (lambda (x)
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73 ;;; (bar nothing)))
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74 ;;; into *LEDIT*
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75
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76 (defun ledit-output (args)
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77 (if args
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78 (let ((ofile (outfile *ledit-outfile*)))
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79 (format ofile "(progn)") ; this is necessary.
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80
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81 (cond ((null (cdr args)) ; no keyword -> arg is a tag.
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82 (format ofile "(progn tag (setq tag \"~A\"~
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83 (&goto-tag))"
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84 (car args)))
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85 ((eq (cadr args) 'pp) ; pp-> pp first arg to emacs
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86 (apply 'pp `((|F| ,*ledit-ppfile*) ,(car args)))
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87 (format ofile "(switch-to-buffer \"LEDIT\")~
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88 (erase-buffer)")
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89 (format ofile "(insert-file \"~A\")"
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90 *ledit-ppfile*)
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91 (format ofile "(lisp-mode)"))
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92
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93 (t (format t "~&~A -- unknown option~%" (cdr args))))
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94 (close ofile))))
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95
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96 ;;; LISZT*
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97 ;;; Need this guy to do compile-input.
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98 ;;; Liszt returns 0 if all was well.
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99 ;;; Note that in ordinary use the user will have to get used to looking
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100 ;;; at "%Warning: ... Compiler declared *foo* special" messages, since
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101 ;;; you don't usually want to hunt around in your file, zap in the
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0
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102 ;;; declarations, then go back to what you were doing.
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103 ;;; Fortunately this doesn't cause the compiler to bomb.
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104 ;;; Some sleepless night I will think of a way to get around this.
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105
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106 (defun liszt* (&rest args)
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107 (apply #'liszt args))
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108
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109 ;;; LEDIT-INPUT
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110 ;;; Although there are two cases here, in practice
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111 ;;; it is never the case that there is both input to be
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112 ;;; interpreted and input to be compiled.
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113
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114 (defun ledit-input ()
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115 (if (probef *ledit-lisztfile*)
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116 (cond ((getd #'liszt)
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117 (format t ";Compiling LEDIT:")
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118 (and (zerop (liszt* *ledit-lisztfile* '-o *ledit-objfile*))
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119 (load *ledit-objfile*)))
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120 (t (format t ";Can't compile LEDIT: No liszt.~%;Reading instead:")
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121 (let ((ifile (infile *ledit-lisztfile*)))
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122 (ledit-load ifile)
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123 (close ifile)))))
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124
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125 (if (probef *ledit-infile*)
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126 (let ((ifile (infile *ledit-infile*)))
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127 (format t ";Reading from LEDIT:~%")
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128 (ledit-load ifile)
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129 (close ifile))))
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130
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131 ;;; LEDIT-LOAD
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132 ;;; A generally useful form of load
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133
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134 (defun ledit-load (ifile)
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135 (let ((eof-form (list 'eof-form)))
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136 (do ((form (read ifile eof-form) (read ifile eof-form)))
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137 ((eq form eof-form))
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138 (format t "; ~A~%" (eval form)))))
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139
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140 (setsyntax #/ 'macro 'ledit) ; make ^E = (ledit)<return>
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141
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142 ;; more robust version of the c function set_proc_str. Does argument checking.
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143 ;; set_proc_str sets the string that is stuffed to the tty after franz pauses
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144 ;; and the csh wakes up. It is usually "%emacs" or "%vemacs" or "%?emacs"
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145 (defun set-proc-str (arg)
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146 (if (stringp arg)
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147 (set_proc_str arg)
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148 (if (symbolp arg)
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149 (set_proc_str (get-pname arg))
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150 (error arg " is illegal argument to set-proc-str"))))
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