| 1 | /*-
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| 2 | * Copyright (c) 1991 The Regents of the University of California.
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * This code is derived from software contributed to Berkeley by
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| 6 | * Kenneth Almquist.
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| 7 | *
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| 8 | * Redistribution and use in source and binary forms, with or without
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| 9 | * modification, are permitted provided that the following conditions
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| 10 | * are met:
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| 11 | * 1. Redistributions of source code must retain the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer.
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| 13 | * 2. Redistributions in binary form must reproduce the above copyright
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| 14 | * notice, this list of conditions and the following disclaimer in the
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| 15 | * documentation and/or other materials provided with the distribution.
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| 16 | * 3. All advertising materials mentioning features or use of this software
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| 17 | * must display the following acknowledgement:
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| 18 | * This product includes software developed by the University of
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| 19 | * California, Berkeley and its contributors.
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| 20 | * 4. Neither the name of the University nor the names of its contributors
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| 21 | * may be used to endorse or promote products derived from this software
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| 22 | * without specific prior written permission.
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| 23 | *
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| 24 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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| 25 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 26 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 27 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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| 28 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 29 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 30 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 31 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 32 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 33 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 34 | * SUCH DAMAGE.
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| 35 | *
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| 36 | * @(#)input.h 5.1 (Berkeley) 3/7/91
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| 37 | */
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| 38 |
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| 39 | /* PEOF (the end of file marker) is defined in syntax.h */
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| 40 |
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| 41 | /*
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| 42 | * The input line number. Input.c just defines this variable, and saves
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| 43 | * and restores it when files are pushed and popped. The user of this
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| 44 | * package must set its value.
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| 45 | */
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| 46 | extern int plinno;
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| 47 | extern int parsenleft; /* number of characters left in input buffer */
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| 48 | extern char *parsenextc; /* next character in input buffer */
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| 49 |
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| 50 |
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| 51 | #ifdef __STDC__
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| 52 | char *pfgets(char *, int);
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| 53 | int pgetc(void);
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| 54 | int preadbuffer(void);
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| 55 | void pungetc(void);
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| 56 | void ppushback(char *, int);
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| 57 | void setinputfile(char *, int);
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| 58 | void setinputfd(int, int);
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| 59 | void setinputstring(char *, int);
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| 60 | void popfile(void);
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| 61 | void popallfiles(void);
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| 62 | void closescript(void);
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| 63 | #else
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| 64 | char *pfgets();
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| 65 | int pgetc();
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| 66 | int preadbuffer();
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| 67 | void pungetc();
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| 68 | void ppushback();
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| 69 | void setinputfile();
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| 70 | void setinputfd();
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| 71 | void setinputstring();
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| 72 | void popfile();
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| 73 | void popallfiles();
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| 74 | void closescript();
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| 75 | #endif
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| 76 |
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| 77 | #define pgetc_macro() (--parsenleft >= 0? *parsenextc++ : preadbuffer())
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| 78 |
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| 79 | #if READLINE
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| 80 | /* The variable "r_use_prompt" indicates the prompt to use with readline,
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| 81 | * *and* that readline may only be used if non-NULL.
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| 82 | */
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| 83 | extern char *r_use_prompt;
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| 84 | #endif
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