1 /* $OpenBSD: extern.h,v 1.54 2014/05/12 19:11:19 espie 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 * @(#)extern.h 8.1 (Berkeley) 6/6/93 38 * $FreeBSD$ 39 */ 40 41 /* eval.c */ 42 extern void eval(const char *[], int, int, int); 43 extern void dodefine(const char *, const char *); 44 extern unsigned long expansion_id; 45 46 /* expr.c */ 47 extern int expr(const char *); 48 49 /* gnum4.c */ 50 extern void addtoincludepath(const char *); 51 extern struct input_file *fopen_trypath(struct input_file *, const char *); 52 extern void doindir(const char *[], int); 53 extern void dobuiltin(const char *[], int); 54 extern void dopatsubst(const char *[], int); 55 extern void doregexp(const char *[], int); 56 57 extern void doprintlineno(struct input_file *); 58 extern void doprintfilename(struct input_file *); 59 60 extern void doesyscmd(const char *); 61 extern void getdivfile(const char *); 62 extern void doformat(const char *[], int); 63 64 /* look.c */ 65 66 #define FLAG_UNTRACED 0 67 #define FLAG_TRACED 1 68 #define FLAG_NO_TRACE 2 69 70 extern void init_macros(void); 71 extern ndptr lookup(const char *); 72 extern void mark_traced(const char *, int); 73 extern struct ohash macros; 74 75 extern struct macro_definition *lookup_macro_definition(const char *); 76 extern void macro_define(const char *, const char *); 77 extern void macro_pushdef(const char *, const char *); 78 extern void macro_popdef(const char *); 79 extern void macro_undefine(const char *); 80 extern void setup_builtin(const char *, unsigned int); 81 extern void macro_for_all(void (*)(const char *, struct macro_definition *)); 82 #define macro_getdef(p) ((p)->d) 83 #define macro_name(p) ((p)->name) 84 #define macro_builtin_type(p) ((p)->builtin_type) 85 #define is_traced(p) ((p)->trace_flags == FLAG_NO_TRACE ? (trace_flags & TRACE_ALL) : (p)->trace_flags) 86 87 extern ndptr macro_getbuiltin(const char *); 88 89 /* main.c */ 90 extern void outputstr(const char *); 91 extern void do_emit_synchline(void); 92 extern int exit_code; 93 #define emit_synchline() do { if (synch_lines) do_emit_synchline(); } while(0) 94 95 /* misc.c */ 96 extern void chrsave(int); 97 extern char *compute_prevep(void); 98 extern void getdiv(int); 99 extern ptrdiff_t indx(const char *, const char *); 100 extern void initspaces(void); 101 extern void killdiv(void); 102 extern void onintr(int); 103 extern void pbnum(int); 104 extern void pbnumbase(int, int, int); 105 extern void pbunsigned(unsigned long); 106 extern void pbstr(const char *); 107 extern void pushback(int); 108 extern void *xalloc(size_t, const char *, ...) __printf0like(2, 3); 109 extern void *xcalloc(size_t, size_t, const char *, ...) __printf0like(3, 4); 110 extern void *xrealloc(void *, size_t, const char *, ...) __printf0like(3, 4); 111 extern void *xreallocarray(void *, size_t, size_t, const char *, ...) __printf0like(4, 5); 112 extern char *xstrdup(const char *); 113 extern void usage(void); 114 extern void resizedivs(int); 115 extern size_t buffer_mark(void); 116 extern void dump_buffer(FILE *, size_t); 117 extern void m4errx(int, const char *, ...) __dead2 __printf0like(2, 3); 118 119 extern int obtain_char(struct input_file *); 120 extern void set_input(struct input_file *, FILE *, const char *); 121 extern void release_input(struct input_file *); 122 123 /* speeded-up versions of chrsave/pushback */ 124 #define PUSHBACK(c) \ 125 do { \ 126 if (bp >= endpbb) \ 127 enlarge_bufspace(); \ 128 *bp++ = (c); \ 129 } while(0) 130 131 #define CHRSAVE(c) \ 132 do { \ 133 if (ep >= endest) \ 134 enlarge_strspace(); \ 135 *ep++ = (c); \ 136 } while(0) 137 138 /* and corresponding exposure for local symbols */ 139 extern void enlarge_bufspace(void); 140 extern void enlarge_strspace(void); 141 extern unsigned char *endpbb; 142 extern char *endest; 143 144 /* trace.c */ 145 extern unsigned int trace_flags; 146 #define TRACE_ALL 512 147 extern void trace_file(const char *); 148 extern size_t trace(const char **, int, struct input_file *); 149 extern void finish_trace(size_t); 150 extern void set_trace_flags(const char *); 151 extern FILE *traceout; 152 153 extern stae *mstack; /* stack of m4 machine */ 154 extern char *sstack; /* shadow stack, for string space extension */ 155 extern FILE *active; /* active output file pointer */ 156 extern struct input_file infile[];/* input file stack (0=stdin) */ 157 extern FILE **outfile; /* diversion array(0=bitbucket) */ 158 extern int maxout; /* maximum number of diversions */ 159 extern int fp; /* m4 call frame pointer */ 160 extern int ilevel; /* input file stack pointer */ 161 extern int oindex; /* diversion index. */ 162 extern int sp; /* current m4 stack pointer */ 163 extern unsigned char *bp; /* first available character */ 164 extern unsigned char *buf; /* push-back buffer */ 165 extern unsigned char *bufbase; /* buffer base for this ilevel */ 166 extern unsigned char *bbase[]; /* buffer base per ilevel */ 167 extern char ecommt[MAXCCHARS+1];/* end character for comment */ 168 extern char *ep; /* first free char in strspace */ 169 extern char lquote[MAXCCHARS+1];/* left quote character (`) */ 170 extern char **m4wraps; /* m4wrap string default. */ 171 extern int maxwraps; /* size of m4wraps array */ 172 extern int wrapindex; /* current index in m4wraps */ 173 174 extern const char *null; /* as it says.. just a null. */ 175 extern char rquote[MAXCCHARS+1];/* right quote character (') */ 176 extern char scommt[MAXCCHARS+1];/* start character for comment */ 177 extern int synch_lines; /* line synchronisation directives */ 178 179 extern int mimic_gnu; /* behaves like gnu-m4 */ 180 extern int prefix_builtins; /* prefix builtin macros with m4_ */ 181 182