bin/sh/input.h

   1 /*-
   2  * Copyright (c) 1991, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * This code is derived from software contributed to Berkeley by
   6  * Kenneth Almquist.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. All advertising materials mentioning features or use of this software
  17  *    must display the following acknowledgement:
  18  *      This product includes software developed by the University of
  19  *      California, Berkeley and its contributors.
  20  * 4. Neither the name of the University nor the names of its contributors
  21  *    may be used to endorse or promote products derived from this software
  22  *    without specific prior written permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  34  * SUCH DAMAGE.
  35  *
  36  *      @(#)input.h     8.2 (Berkeley) 5/4/95
  37  * $FreeBSD: src/bin/sh/input.h,v 1.7.2.1 2002/07/19 04:38:51 tjr Exp $
  38  * $DragonFly: src/bin/sh/input.h,v 1.3 2004/03/19 18:39:41 cpressey Exp $
  39  */
  40
  41 /* PEOF (the end of file marker) is defined in syntax.h */
  42
  43 /*
  44  * The input line number.  Input.c just defines this variable, and saves
  45  * and restores it when files are pushed and popped.  The user of this
  46  * package must set its value.
  47  */
  48 extern int plinno;
  49 extern int parsenleft;          /* number of characters left in input buffer */
  50 extern char *parsenextc;        /* next character in input buffer */
  51 extern int init_editline;       /* 0 == not setup, 1 == OK, -1 == failed */
  52
  53 char *pfgets(char *, int);
  54 int pgetc(void);
  55 int preadbuffer(void);
  56 void pungetc(void);
  57 void pushstring(char *, int, void *);
  58 void popstring(void);
  59 void setinputfile(const char *, int);
  60 void setinputfd(int, int);
  61 void setinputstring(char *, int);
  62 void popfile(void);
  63 void popallfiles(void);
  64 void closescript(void);
  65
  66 #define pgetc_macro()   (--parsenleft >= 0? *parsenextc++ : preadbuffer())