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 39 /* PEOF (the end of file marker) is defined in syntax.h */ 40 41 /* 42 * The input line number. Input.c just defines this variable, and saves 43 * and restores it when files are pushed and popped. The user of this 44 * package must set its value. 45 */ 46 extern int plinno; 47 extern int parsenleft; /* number of characters left in input buffer */ 48 extern char *parsenextc; /* next character in input buffer */ 49 50 51 #ifdef __STDC__ 52 char *pfgets(char *, int); 53 int pgetc(void); 54 int preadbuffer(void); 55 void pungetc(void); 56 void ppushback(char *, int); 57 void setinputfile(char *, int); 58 void setinputfd(int, int); 59 void setinputstring(char *, int); 60 void popfile(void); 61 void popallfiles(void); 62 void closescript(void); 63 #else 64 char *pfgets(); 65 int pgetc(); 66 int preadbuffer(); 67 void pungetc(); 68 void ppushback(); 69 void setinputfile(); 70 void setinputfd(); 71 void setinputstring(); 72 void popfile(); 73 void popallfiles(); 74 void closescript(); 75 #endif 76 77 #define pgetc_macro() (--parsenleft >= 0? *parsenextc++ : preadbuffer()) 78