extern.h revision 1.31
1/* $OpenBSD: extern.h,v 1.31 2003/06/03 02:56:10 millert Exp $ */ 2/* $NetBSD: extern.h,v 1.3 1996/01/13 23:25:24 pk Exp $ */ 3 4/*- 5 * Copyright (c) 1991, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * Ozan Yigit at York University. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 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 * 3. 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. 22 * 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 33 * SUCH DAMAGE. 34 * 35 * @(#)extern.h 8.1 (Berkeley) 6/6/93 36 */ 37 38/* eval.c */ 39extern void eval(const char *[], int, int); 40extern void dodefine(const char *, const char *); 41extern unsigned long expansion_id; 42 43/* expr.c */ 44extern int expr(const char *); 45 46/* gnum4.c */ 47extern void addtoincludepath(const char *); 48extern struct input_file *fopen_trypath(struct input_file *, const char *); 49extern void doindir(const char *[], int); 50extern void dobuiltin(const char *[], int); 51extern void dopatsubst(const char *[], int); 52extern void doregexp(const char *[], int); 53 54extern void doprintlineno(struct input_file *); 55extern void doprintfilename(struct input_file *); 56 57extern void doesyscmd(const char *); 58 59 60/* look.c */ 61extern ndptr addent(const char *); 62extern unsigned hash(const char *); 63extern ndptr lookup(const char *); 64extern void remhash(const char *, int); 65 66/* main.c */ 67extern void outputstr(const char *); 68extern int builtin_type(const char *); 69extern char *builtin_realname(int); 70extern void do_emit_synchline(void); 71#define emit_synchline() do { if (synch_lines) do_emit_synchline(); } while(0) 72 73/* misc.c */ 74extern void chrsave(int); 75extern char *compute_prevep(void); 76extern void getdiv(int); 77extern ptrdiff_t indx(const char *, const char *); 78extern void initspaces(void); 79extern void killdiv(void); 80extern void onintr(int); 81extern void pbnum(int); 82extern void pbunsigned(unsigned long); 83extern void pbstr(const char *); 84extern void putback(int); 85extern void *xalloc(size_t); 86extern char *xstrdup(const char *); 87extern void usage(void); 88extern void resizedivs(int); 89extern size_t buffer_mark(void); 90extern void dump_buffer(FILE *, size_t); 91 92extern int obtain_char(struct input_file *); 93extern void set_input(struct input_file *, FILE *, const char *); 94extern void release_input(struct input_file *); 95 96/* speeded-up versions of chrsave/putback */ 97#define PUTBACK(c) \ 98 do { \ 99 if (bp >= endpbb) \ 100 enlarge_bufspace(); \ 101 *bp++ = (c); \ 102 } while(0) 103 104#define CHRSAVE(c) \ 105 do { \ 106 if (ep >= endest) \ 107 enlarge_strspace(); \ 108 *ep++ = (c); \ 109 } while(0) 110 111/* and corresponding exposure for local symbols */ 112extern void enlarge_bufspace(void); 113extern void enlarge_strspace(void); 114extern char *endpbb; 115extern char *endest; 116 117/* trace.c */ 118extern void mark_traced(const char *, int); 119extern int is_traced(const char *); 120extern void trace_file(const char *); 121extern ssize_t trace(const char **, int, struct input_file *); 122extern void finish_trace(size_t); 123extern int traced_macros; 124extern void set_trace_flags(const char *); 125extern FILE *traceout; 126 127extern ndptr hashtab[]; /* hash table for macros etc. */ 128extern stae *mstack; /* stack of m4 machine */ 129extern char *sstack; /* shadow stack, for string space extension */ 130extern FILE *active; /* active output file pointer */ 131extern struct input_file infile[];/* input file stack (0=stdin) */ 132extern FILE **outfile; /* diversion array(0=bitbucket) */ 133extern int maxout; /* maximum number of diversions */ 134extern int fp; /* m4 call frame pointer */ 135extern int ilevel; /* input file stack pointer */ 136extern int oindex; /* diversion index. */ 137extern int sp; /* current m4 stack pointer */ 138extern char *bp; /* first available character */ 139extern char *buf; /* push-back buffer */ 140extern char *bufbase; /* buffer base for this ilevel */ 141extern char *bbase[]; /* buffer base per ilevel */ 142extern char ecommt[MAXCCHARS+1];/* end character for comment */ 143extern char *ep; /* first free char in strspace */ 144extern char lquote[MAXCCHARS+1];/* left quote character (`) */ 145extern char *m4wraps; /* m4wrap string default. */ 146extern char *null; /* as it says.. just a null. */ 147extern char rquote[MAXCCHARS+1];/* right quote character (') */ 148extern char scommt[MAXCCHARS+1];/* start character for comment */ 149extern int synch_lines; /* line synchronisation directives */ 150 151extern int mimic_gnu; /* behaves like gnu-m4 */ 152