input.h revision 1.21 
1/*	$NetBSD: input.h,v 1.21 2018/08/19 23:50:27 kre Exp $	*/
2
3/*-
4 * Copyright (c) 1991, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Kenneth Almquist.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 *    may be used to endorse or promote products derived from this software
20 *    without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 *	@(#)input.h	8.2 (Berkeley) 5/4/95
35 */
36
37/* PEOF (the end of file marker) is defined in syntax.h */
38
39/*
40 * The input line number.  Input.c just defines this variable, and saves
41 * and restores it when files are pushed and popped.  The user of this
42 * package must set its value.
43 */
44extern int plinno;
45extern int parsenleft;		/* number of characters left in input buffer */
46extern const char *parsenextc;	/* next character in input buffer */
47extern int init_editline;	/* 0 == not setup, 1 == OK, -1 == failed */
48extern int whichprompt;		/* 1 ==> PS1, 2 ==> PS2 */
49
50struct alias;
51struct parsefile;
52
53char *pfgets(char *, int);
54int pgetc(void);
55int preadbuffer(void);
56int at_eof(void);
57void pungetc(void);
58void pushstring(const char *, int, struct alias *);
59void popstring(void);
60void setinputfile(const char *, int);
61void setinputfd(int, int);
62void setinputstring(char *, int, int);
63void popfile(void);
64struct parsefile *getcurrentfile(void);
65void popfilesupto(struct parsefile *);
66void popallfiles(void);
67void closescript(int);
68
69#define pgetc_macro()	(--parsenleft >= 0? *parsenextc++ : preadbuffer())
70