1/* $OpenBSD: extern.h,v 1.52 2012/04/12 17:00:11 espie 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 * $FreeBSD$ 37 */ 38 39/* eval.c */ 40extern void eval(const char *[], int, int, int); 41extern void dodefine(const char *, const char *); 42extern unsigned long expansion_id; 43 44/* expr.c */ 45extern int expr(const char *); 46extern int32_t end_result; 47 48/* gnum4.c */ 49extern void addtoincludepath(const char *); 50extern struct input_file *fopen_trypath(struct input_file *, const char *); 51extern void doindir(const char *[], int); 52extern void dobuiltin(const char *[], int); 53extern void dopatsubst(const char *[], int); 54extern void doregexp(const char *[], int); 55 56extern void doprintlineno(struct input_file *); 57extern void doprintfilename(struct input_file *); 58 59extern void doesyscmd(const char *); 60extern void getdivfile(const char *); 61extern void doformat(const char *[], int); 62 63/* look.c */ 64 65#define FLAG_UNTRACED 0 66#define FLAG_TRACED 1 67#define FLAG_NO_TRACE 2 68 69extern void init_macros(void); 70extern ndptr lookup(const char *); 71extern void mark_traced(const char *, int); 72extern struct ohash macros; 73 74extern struct macro_definition *lookup_macro_definition(const char *); 75extern void macro_define(const char *, const char *); 76extern void macro_pushdef(const char *, const char *); 77extern void macro_popdef(const char *); 78extern void macro_undefine(const char *); 79extern void setup_builtin(const char *, unsigned int); 80extern void macro_for_all(void (*)(const char *, struct macro_definition *)); 81#define macro_getdef(p) ((p)->d) 82#define macro_name(p) ((p)->name) 83#define macro_builtin_type(p) ((p)->builtin_type) 84#define is_traced(p) ((p)->trace_flags == FLAG_NO_TRACE ? (trace_flags & TRACE_ALL) : (p)->trace_flags) 85 86extern ndptr macro_getbuiltin(const char *); 87 88/* main.c */ 89extern void outputstr(const char *); 90extern void do_emit_synchline(void); 91extern int exit_code; 92#define emit_synchline() do { if (synch_lines) do_emit_synchline(); } while(0) 93 94/* misc.c */ 95extern void chrsave(int); 96extern char *compute_prevep(void); 97extern void getdiv(int); 98extern ptrdiff_t indx(const char *, const char *); 99extern void initspaces(void); 100extern void killdiv(void); 101extern void onintr(int); 102extern void pbnum(int); 103extern void pbnumbase(int, int, int); 104extern void pbunsigned(unsigned long); 105extern void pbstr(const char *); 106extern void pushback(int); 107extern void *xalloc(size_t, const char *fmt, ...); 108extern void *xrealloc(void *, size_t, const char *fmt, ...); 109extern char *xstrdup(const char *); 110extern void usage(void); 111extern void resizedivs(int); 112extern size_t buffer_mark(void); 113extern void dump_buffer(FILE *, size_t); 114extern void m4errx(int, const char *, ...); 115 116extern int obtain_char(struct input_file *); 117extern void set_input(struct input_file *, FILE *, const char *); 118extern void release_input(struct input_file *); 119 120/* speeded-up versions of chrsave/pushback */ 121#define PUSHBACK(c) \ 122 do { \ 123 if (bp >= endpbb) \ 124 enlarge_bufspace(); \ 125 *bp++ = (c); \ 126 } while(0) 127 128#define CHRSAVE(c) \ 129 do { \ 130 if (ep >= endest) \ 131 enlarge_strspace(); \ 132 *ep++ = (c); \ 133 } while(0) 134 135/* and corresponding exposure for local symbols */ 136extern void enlarge_bufspace(void); 137extern void enlarge_strspace(void); 138extern unsigned char *endpbb; 139extern char *endest; 140 141/* trace.c */ 142extern unsigned int trace_flags; 143#define TRACE_ALL 512 144extern void trace_file(const char *); 145extern size_t trace(const char **, int, struct input_file *); 146extern void finish_trace(size_t); 147extern void set_trace_flags(const char *); 148extern FILE *traceout; 149 150extern stae *mstack; /* stack of m4 machine */ 151extern char *sstack; /* shadow stack, for string space extension */ 152extern FILE *active; /* active output file pointer */ 153extern struct input_file infile[];/* input file stack (0=stdin) */ 154extern FILE **outfile; /* diversion array(0=bitbucket) */ 155extern int maxout; /* maximum number of diversions */ 156extern int fp; /* m4 call frame pointer */ 157extern int ilevel; /* input file stack pointer */ 158extern int oindex; /* diversion index. */ 159extern int sp; /* current m4 stack pointer */ 160extern unsigned char *bp; /* first available character */ 161extern unsigned char *buf; /* push-back buffer */ 162extern unsigned char *bufbase; /* buffer base for this ilevel */ 163extern unsigned char *bbase[]; /* buffer base per ilevel */ 164extern char ecommt[MAXCCHARS+1];/* end character for comment */ 165extern char *ep; /* first free char in strspace */ 166extern char lquote[MAXCCHARS+1];/* left quote character (`) */ 167extern char **m4wraps; /* m4wrap string default. */ 168extern int maxwraps; /* size of m4wraps array */ 169extern int wrapindex; /* current index in m4wraps */ 170 171extern const char *null; /* as it says.. just a null. */ 172extern char rquote[MAXCCHARS+1];/* right quote character (') */ 173extern char scommt[MAXCCHARS+1];/* start character for comment */ 174extern int synch_lines; /* line synchronisation directives */ 175 176extern int mimic_gnu; /* behaves like gnu-m4 */ 177extern int prefix_builtins; /* prefix builtin macros with m4_ */ 178 179