2 * Copyright (c) 1991, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
6 * Ozan Yigit at York University.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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.
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
36 * @(#)extern.h 8.1 (Berkeley) 6/6/93
39 char *basename __P((char *));
40 char *xalloc __P((unsigned long));
41 int expr __P((char *));
42 ndptr addent __P((char *));
43 void chrsave __P((int));
44 void dochc __P((char *[], int));
45 void dochq __P((char *[], int));
46 void dodefine __P((char *, char *));
47 void dodefn __P((char *));
48 void dodiv __P((int));
49 void dodump __P((char *[], int));
50 void doifelse __P((char *[], int));
51 int doincl __P((char *));
52 int dopaste __P((char *));
53 void dopushdef __P((char *, char *));
54 void dosub __P((char *[], int));
55 void doundiv __P((char *[], int));
56 void eval __P((char *[], int, int));
57 void expand __P((char *[], int));
58 void getdiv __P((int));
59 char *xstrdup __P((const char *));
60 int hash __P((char *));
61 int indx __P((char *, char *));
62 void killdiv __P((void));
63 ndptr lookup __P((char *));
64 void map __P((char *, char *, char *, char *));
65 void onintr __P((int));
66 void pbnum __P((int));
67 void pbstr __P((unsigned char *));
68 void putback __P((int));
69 void remhash __P((char *, int));
70 void usage __P((void));
72 extern ndptr hashtab[]; /* hash table for macros etc. */
73 extern stae mstack[]; /* stack of m4 machine */
74 extern FILE *active; /* active output file pointer */
75 extern FILE *infile[]; /* input file stack (0=stdin) */
76 extern FILE *outfile[]; /* diversion array(0=bitbucket) */
77 extern int fp; /* m4 call frame pointer */
78 extern int ilevel; /* input file stack pointer */
79 extern int oindex; /* diversion index. */
80 extern int sp; /* current m4 stack pointer */
81 extern unsigned char *bp; /* first available character */
82 extern unsigned char buf[]; /* push-back buffer */
83 extern unsigned char *bufbase; /* buffer base for this ilevel */
84 extern unsigned char *bbase[]; /* buffer base per ilevel */
85 extern char ecommt; /* end character for comment */
86 extern char *endest; /* end of string space */
87 extern unsigned char *endpbb; /* end of push-back buffer */
88 extern char *ep; /* first free char in strspace */
89 extern char lquote; /* left quote character (`) */
90 extern char *m4temp; /* filename for diversions */
91 extern char *m4wraps; /* m4wrap string default. */
92 extern char *null; /* as it says.. just a null. */
93 extern char rquote; /* right quote character (') */
94 extern char scommt; /* start character for comment */