stk/Src/console.c

90 lines
2.4 KiB
C

/*
*
* c o n s o l e . c -- Console management
*
* Copyright © 1998 Erick Gallesio - I3S-CNRS/ESSI <eg@unice.fr>
*
*
* Permission to use, copy, and/or distribute this software and its
* documentation for any purpose and without fee is hereby granted, provided
* that both the above copyright notice and this permission notice appear in
* all copies and derived works. Fees for distribution or use of this
* software or derived works may only be charged with express written
* permission of the copyright holder.
* This software is provided ``as is'' without express or implied warranty.
*
* This software is a derivative work of other copyrighted softwares; the
* copyright notices of these softwares are placed in the file COPYRIGHTS
*
* $Id: console.c 1.5 Mon, 28 Dec 1998 23:05:11 +0100 eg $
*
* Author: Erick Gallesio [eg@kaolin.unice.fr]
* Creation date: 4-Nov-1998 18:50
* Last file update: 26-Dec-1998 23:01
*
*/
#include "stk.h"
#ifdef USE_TK
static PRIMITIVE fill_stdin(SCM str)
{
static SCM the_buffer = NULL;
ENTER_PRIMITIVE("%fill-stdin");
if (!STRINGP(str)) Serror("bad string", str);
if (!the_buffer) {
/* first call to fill_stdin. Protect the buffer against GC */
STk_gc_protect(&the_buffer);
}
the_buffer = str;
STk_fill_stdin_buffer(CHARS(str));
return UNDEFINED;
}
void STk_console_prompt(SCM env)
{
char *msg = "Incorrect \"console-display-prompt\" procedure";
char *expr = "(catch ((with-module Tk console-display-prompt)(current-module)))";
if (STk_internal_eval_string(expr, 0, env) == Truth) {
/* print on stderr AND the console because console is probably
* not reliable if we are here.
*/
fprintf(stderr, "**** FATAL ERROR: %s\nABANDON\n", msg);
panic(msg);
}
}
void STk_init_console(void)
{
char file[MAX_PATH_LENGTH+30];
char *name= "%make-standard-console";
SCM *tmp;
/* Load the console file */
sprintf(file, "%s/STk/console.stk", STk_library_path);
if (STk_load_file(file, FALSE, STk_selected_module) == Ntruth)
panic("Unable to load the console file \"%s\"", file);
/* Add the new (secret) primitive fill_stdin */
STk_add_new_primitive("%fill-stdin", tc_subr_1, fill_stdin);
/* Call the function %make-standard-console */
tmp = STk_varlookup(Intern(name), NIL, FALSE);
if (STk_procedurep(*tmp) == Ntruth)
panic("File \"%s\" does not define properly the function \"%s\"", file, name);
STk_apply(*tmp, NIL);
}
#endif