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      1 /*	$NetBSD: input.h,v 1.22 2024/08/03 03:05:58 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  */
     44 extern int plinno;
     45 extern int parsenleft;		/* number of characters left in input buffer */
     46 extern const char *parsenextc;	/* next character in input buffer */
     47 extern int init_editline;	/* 0 == not setup, 1 == OK, -1 == failed */
     48 extern int whichprompt;		/* 1 ==> PS1, 2 ==> PS2 */
     49 
     50 struct alias;
     51 struct parsefile;
     52 
     53 char *pfgets(char *, int);
     54 int pgetc(void);
     55 int preadbuffer(void);
     56 int at_eof(void);
     57 void pungetc(void);
     58 void pushstring(const char *, int, struct alias *);
     59 void popstring(void);
     60 void setinputfile(const char *, int);
     61 void setinputfd(int, int);
     62 void setinputstring(const char *, int, int);
     63 void popfile(void);
     64 struct parsefile *getcurrentfile(void);
     65 void popfilesupto(struct parsefile *);
     66 void popallfiles(void);
     67 void closescript(int);
     68 
     69 #define pgetc_macro()	(--parsenleft >= 0? *parsenextc++ : preadbuffer())
     70