1/* $OpenBSD: extern.h,v 1.56 2024/05/21 05:00:48 jsg 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, 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 *); 58extern void getdivfile(const char *); 59extern void doformat(const char *[], int); 60 61extern void m4_warnx(const char *, ...); 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 void getdiv(int); 97extern ptrdiff_t indx(const char *, const char *); 98extern void initspaces(void); 99extern void killdiv(void); 100extern void onintr(int); 101extern void pbnum(int); 102extern void pbnumbase(int, int, int); 103extern void pbunsigned(unsigned long); 104extern void pbstr(const char *); 105extern void pushback(int); 106extern void *xalloc(size_t, const char *, ...); 107extern void *xcalloc(size_t, size_t, const char *, ...); 108extern void *xrealloc(void *, size_t, const char *, ...); 109extern void *xreallocarray(void *, size_t, size_t, const char *, ...); 110extern char *xstrdup(const char *); 111extern void usage(void); 112extern void resizedivs(int); 113extern size_t buffer_mark(void); 114extern void dump_buffer(FILE *, size_t); 115extern void __dead m4errx(int, const char *, ...); 116 117extern int obtain_char(struct input_file *); 118extern void set_input(struct input_file *, FILE *, const char *); 119extern void release_input(struct input_file *); 120 121/* speeded-up versions of chrsave/pushback */ 122#define PUSHBACK(c) \ 123 do { \ 124 if (bp >= endpbb) \ 125 enlarge_bufspace(); \ 126 *bp++ = (c); \ 127 } while(0) 128 129#define CHRSAVE(c) \ 130 do { \ 131 if (ep >= endest) \ 132 enlarge_strspace(); \ 133 *ep++ = (c); \ 134 } while(0) 135 136/* and corresponding exposure for local symbols */ 137extern void enlarge_bufspace(void); 138extern void enlarge_strspace(void); 139extern unsigned char *endpbb; 140extern char *endest; 141 142/* trace.c */ 143extern unsigned int trace_flags; 144#define TRACE_ALL 512 145extern void trace_file(const char *); 146extern size_t trace(const char **, int, struct input_file *); 147extern void finish_trace(size_t); 148extern void set_trace_flags(const char *); 149extern FILE *traceout; 150 151extern stae *mstack; /* stack of m4 machine */ 152extern char *sstack; /* shadow stack, for string space extension */ 153extern FILE *active; /* active output file pointer */ 154extern struct input_file infile[];/* input file stack (0=stdin) */ 155extern FILE **outfile; /* diversion array(0=bitbucket) */ 156extern int maxout; /* maximum number of diversions */ 157extern int fp; /* m4 call frame pointer */ 158extern int ilevel; /* input file stack pointer */ 159extern int oindex; /* diversion index. */ 160extern int sp; /* current m4 stack pointer */ 161extern unsigned char *bp; /* first available character */ 162extern unsigned char *buf; /* push-back buffer */ 163extern unsigned char *bufbase; /* buffer base for this ilevel */ 164extern unsigned char *bbase[]; /* buffer base per ilevel */ 165extern char ecommt[MAXCCHARS+1];/* end character for comment */ 166extern char *ep; /* first free char in strspace */ 167extern char lquote[MAXCCHARS+1];/* left quote character (`) */ 168extern char **m4wraps; /* m4wrap string default. */ 169extern int maxwraps; /* size of m4wraps array */ 170extern int wrapindex; /* current index in m4wraps */ 171 172extern char *null; /* as it says.. just a null. */ 173extern char rquote[MAXCCHARS+1];/* right quote character (') */ 174extern char scommt[MAXCCHARS+1];/* start character for comment */ 175extern int synch_lines; /* line synchronisation directives */ 176 177extern int mimic_gnu; /* behaves like gnu-m4 */ 178extern int prefix_builtins; /* prefix builtin macros with m4_ */ 179extern int error_warns; /* make warnings cause exit_code = 1 */ 180extern int fatal_warns; /* make warnings fatal */ 181 182