input.h revision 1.2
1/*- 2 * Copyright (c) 1991 The Regents of the University of California. 3 * 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 5.1 (Berkeley) 3/7/91 37 * 38 * $Id: input.h,v 1.2 1993/03/22 08:04:00 cgd 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 */ 48extern int plinno; 49extern int parsenleft; /* number of characters left in input buffer */ 50extern char *parsenextc; /* next character in input buffer */ 51 52 53#ifdef __STDC__ 54char *pfgets(char *, int); 55int pgetc(void); 56int preadbuffer(void); 57void pungetc(void); 58void ppushback(char *, int); 59void setinputfile(char *, int); 60void setinputfd(int, int); 61void setinputstring(char *, int); 62void popfile(void); 63void popallfiles(void); 64void closescript(void); 65#else 66char *pfgets(); 67int pgetc(); 68int preadbuffer(); 69void pungetc(); 70void ppushback(); 71void setinputfile(); 72void setinputfd(); 73void setinputstring(); 74void popfile(); 75void popallfiles(); 76void closescript(); 77#endif 78 79#define pgetc_macro() (--parsenleft >= 0? *parsenextc++ : preadbuffer()) 80