1 /* $OpenBSD: extern.h,v 1.29 2002/02/16 21:27:48 millert Exp $ */
2 /* $NetBSD: extern.h,v 1.3 1996/01/13 23:25:24 pk Exp $ */
5 * Copyright (c) 1991, 1993
6 * The Regents of the University of California. All rights reserved.
8 * This code is derived from software contributed to Berkeley by
9 * Ozan Yigit at York University.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 4. Neither the name of the University nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * @(#)extern.h 8.1 (Berkeley) 6/6/93
40 extern void eval(const char *[], int, int);
41 extern void dodefine(const char *, const char *);
42 extern unsigned long expansion_id;
45 extern int expr(const char *);
48 extern void addtoincludepath(const char *);
49 extern struct input_file *fopen_trypath(struct input_file *, const char *);
50 extern void doindir(const char *[], int);
51 extern void dobuiltin(const char *[], int);
52 extern void dopatsubst(const char *[], int);
53 extern void doregexp(const char *[], int);
55 extern void doprintlineno(struct input_file *);
56 extern void doprintfilename(struct input_file *);
58 extern void doesyscmd(const char *);
62 extern ndptr addent(const char *);
63 extern unsigned hash(const char *);
64 extern ndptr lookup(const char *);
65 extern void remhash(const char *, int);
68 extern void outputstr(const char *);
69 extern int builtin_type(const char *);
70 extern const char *builtin_realname(int);
71 extern void emitline(void);
74 extern void chrsave(int);
75 extern char *compute_prevep(void);
76 extern void getdiv(int);
77 extern ptrdiff_t indx(const char *, const char *);
78 extern void initspaces(void);
79 extern void killdiv(void);
80 extern void onintr(int);
81 extern void pbnum(int);
82 extern void pbunsigned(unsigned long);
83 extern void pbstr(const char *);
84 extern void putback(int);
85 extern void *xalloc(size_t);
86 extern char *xstrdup(const char *);
87 extern void usage(void);
88 extern void resizedivs(int);
89 extern size_t buffer_mark(void);
90 extern void dump_buffer(FILE *, size_t);
92 extern int obtain_char(struct input_file *);
93 extern void set_input(struct input_file *, FILE *, const char *);
94 extern void release_input(struct input_file *);
96 /* speeded-up versions of chrsave/putback */
100 enlarge_bufspace(); \
107 enlarge_strspace(); \
111 /* and corresponding exposure for local symbols */
112 extern void enlarge_bufspace(void);
113 extern void enlarge_strspace(void);
118 extern void mark_traced(const char *, int);
119 extern int is_traced(const char *);
120 extern void trace_file(const char *);
121 extern ssize_t trace(const char **, int, struct input_file *);
122 extern void finish_trace(size_t);
123 extern int traced_macros;
124 extern void set_trace_flags(const char *);
125 extern FILE *traceout;
127 extern ndptr hashtab[]; /* hash table for macros etc. */
128 extern stae *mstack; /* stack of m4 machine */
129 extern char *sstack; /* shadow stack, for string space extension */
130 extern FILE *active; /* active output file pointer */
131 extern struct input_file infile[];/* input file stack (0=stdin) */
132 extern char *inname[]; /* names of these input files */
133 extern int inlineno[]; /* current number in each input file */
134 extern FILE **outfile; /* diversion array(0=bitbucket) */
135 extern int maxout; /* maximum number of diversions */
136 extern int fp; /* m4 call frame pointer */
137 extern int ilevel; /* input file stack pointer */
138 extern int oindex; /* diversion index. */
139 extern int sp; /* current m4 stack pointer */
140 extern char *bp; /* first available character */
141 extern char *buf; /* push-back buffer */
142 extern char *bufbase; /* buffer base for this ilevel */
143 extern char *bbase[]; /* buffer base per ilevel */
144 extern char ecommt[MAXCCHARS+1];/* end character for comment */
145 extern char *ep; /* first free char in strspace */
146 extern char lquote[MAXCCHARS+1];/* left quote character (`) */
147 extern const char *m4wraps; /* m4wrap string default. */
148 extern char null[]; /* as it says.. just a null. */
149 extern char rquote[MAXCCHARS+1];/* right quote character (') */
150 extern char scommt[MAXCCHARS+1];/* start character for comment */
151 extern int synccpp; /* Line synchronisation for C preprocessor */
153 extern int mimic_gnu; /* behaves like gnu-m4 */
155 /* get a possibly pushed-back-character, increment lineno if need be */
156 static __inline int gpbc(void)
158 int chscratch; /* Scratch space. */
162 return ((unsigned char)*bp);
166 chscratch = obtain_char(infile+ilevel);
167 if (chscratch == '\n')