1/* $OpenBSD: extern.h,v 1.55 2017/06/15 13:48:42 bcallah Exp $ */ 2/* $NetBSD: extern.h,v 1.3 1996/01/13 23:25:24 pk Exp $ */ 3 4/*- 5 * SPDX-License-Identifier: BSD-3-Clause 6 * 7 * Copyright (c) 1991, 1993 8 * The Regents of the University of California. All rights reserved. 9 * 10 * This code is derived from software contributed to Berkeley by 11 * Ozan Yigit at York University. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 3. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 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 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 *, ...) __printf0like(2, 3); 108extern void *xcalloc(size_t, size_t, const char *, ...) __printf0like(3, 4); 109extern void *xrealloc(void *, size_t, const char *, ...) __printf0like(3, 4); 110extern void *xreallocarray(void *, size_t, size_t, const char *, ...) __printf0like(4, 5); 111extern char *xstrdup(const char *); 112extern void usage(void); 113extern void resizedivs(int); 114extern size_t buffer_mark(void); 115extern void dump_buffer(FILE *, size_t); 116extern void m4errx(int, const char *, ...) __dead2 __printf0like(2, 3); 117 118extern int obtain_char(struct input_file *); 119extern void set_input(struct input_file *, FILE *, const char *); 120extern void release_input(struct input_file *); 121 122/* speeded-up versions of chrsave/pushback */ 123#define PUSHBACK(c) \ 124 do { \ 125 if (bp >= endpbb) \ 126 enlarge_bufspace(); \ 127 *bp++ = (c); \ 128 } while(0) 129 130#define CHRSAVE(c) \ 131 do { \ 132 if (ep >= endest) \ 133 enlarge_strspace(); \ 134 *ep++ = (c); \ 135 } while(0) 136 137/* and corresponding exposure for local symbols */ 138extern void enlarge_bufspace(void); 139extern void enlarge_strspace(void); 140extern unsigned char *endpbb; 141extern char *endest; 142 143/* trace.c */ 144extern unsigned int trace_flags; 145#define TRACE_ALL 512 146extern void trace_file(const char *); 147extern size_t trace(const char **, int, struct input_file *); 148extern void finish_trace(size_t); 149extern void set_trace_flags(const char *); 150extern FILE *traceout; 151 152extern stae *mstack; /* stack of m4 machine */ 153extern char *sstack; /* shadow stack, for string space extension */ 154extern FILE *active; /* active output file pointer */ 155extern struct input_file infile[];/* input file stack (0=stdin) */ 156extern FILE **outfile; /* diversion array(0=bitbucket) */ 157extern int maxout; /* maximum number of diversions */ 158extern int fp; /* m4 call frame pointer */ 159extern int ilevel; /* input file stack pointer */ 160extern int oindex; /* diversion index. */ 161extern int sp; /* current m4 stack pointer */ 162extern unsigned char *bp; /* first available character */ 163extern unsigned char *buf; /* push-back buffer */ 164extern unsigned char *bufbase; /* buffer base for this ilevel */ 165extern unsigned char *bbase[]; /* buffer base per ilevel */ 166extern char ecommt[MAXCCHARS+1];/* end character for comment */ 167extern char *ep; /* first free char in strspace */ 168extern char lquote[MAXCCHARS+1];/* left quote character (`) */ 169extern char **m4wraps; /* m4wrap string default. */ 170extern int maxwraps; /* size of m4wraps array */ 171extern int wrapindex; /* current index in m4wraps */ 172 173extern const char *null; /* as it says.. just a null. */ 174extern char rquote[MAXCCHARS+1];/* right quote character (') */ 175extern char scommt[MAXCCHARS+1];/* start character for comment */ 176extern int synch_lines; /* line synchronisation directives */ 177 178extern int mimic_gnu; /* behaves like gnu-m4 */ 179extern int prefix_builtins; /* prefix builtin macros with m4_ */ 180extern int error_warns; /* make warnings cause exit_code = 1 */ 181extern int fatal_warns; /* make warnings fatal */ 182