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 * @(#)extern.h 8.1 (Berkeley) 6/6/93 38 */ 39 40 /* eval.c */ 41 extern void eval(const char *[], int, int, int); 42 extern void dodefine(const char *, const char *); 43 extern unsigned long expansion_id; 44 45 /* expr.c */ 46 extern int expr(const char *); 47 48 /* gnum4.c */ 49 extern void addtoincludepath(const char *); 50 extern struct input_file *fopen_trypath(struct input_file *, const char *); 51 extern void doindir(const char *[], int); 52 extern void dobuiltin(const char *[], int); 53 extern void dopatsubst(const char *[], int); 54 extern void doregexp(const char *[], int); 55 56 extern void doprintlineno(struct input_file *); 57 extern void doprintfilename(struct input_file *); 58 59 extern void doesyscmd(const char *); 60 extern void getdivfile(const char *); 61 extern void doformat(const char *[], int); 62 63 extern void m4_warnx(const char *, ...); 64 65 /* look.c */ 66 67 #define FLAG_UNTRACED 0 68 #define FLAG_TRACED 1 69 #define FLAG_NO_TRACE 2 70 71 extern void init_macros(void); 72 extern ndptr lookup(const char *); 73 extern void mark_traced(const char *, int); 74 extern struct ohash macros; 75 76 extern struct macro_definition *lookup_macro_definition(const char *); 77 extern void macro_define(const char *, const char *); 78 extern void macro_pushdef(const char *, const char *); 79 extern void macro_popdef(const char *); 80 extern void macro_undefine(const char *); 81 extern void setup_builtin(const char *, unsigned int); 82 extern void macro_for_all(void (*)(const char *, struct macro_definition *)); 83 #define macro_getdef(p) ((p)->d) 84 #define macro_name(p) ((p)->name) 85 #define macro_builtin_type(p) ((p)->builtin_type) 86 #define is_traced(p) ((p)->trace_flags == FLAG_NO_TRACE ? (trace_flags & TRACE_ALL) : (p)->trace_flags) 87 88 extern ndptr macro_getbuiltin(const char *); 89 90 /* main.c */ 91 extern void outputstr(const char *); 92 extern void do_emit_synchline(void); 93 extern int exit_code; 94 #define emit_synchline() do { if (synch_lines) do_emit_synchline(); } while(0) 95 96 /* misc.c */ 97 extern void chrsave(int); 98 extern char *compute_prevep(void); 99 extern void getdiv(int); 100 extern ptrdiff_t indx(const char *, const char *); 101 extern void initspaces(void); 102 extern void killdiv(void); 103 extern void onintr(int); 104 extern void pbnum(int); 105 extern void pbnumbase(int, int, int); 106 extern void pbunsigned(unsigned long); 107 extern void pbstr(const char *); 108 extern void pushback(int); 109 extern void *xalloc(size_t, const char *, ...) __printf0like(2, 3); 110 extern void *xcalloc(size_t, size_t, const char *, ...) __printf0like(3, 4); 111 extern void *xrealloc(void *, size_t, const char *, ...) __printf0like(3, 4); 112 extern void *xreallocarray(void *, size_t, size_t, const char *, ...) __printf0like(4, 5); 113 extern char *xstrdup(const char *); 114 extern void usage(void); 115 extern void resizedivs(int); 116 extern size_t buffer_mark(void); 117 extern void dump_buffer(FILE *, size_t); 118 extern void m4errx(int, const char *, ...) __dead2 __printf0like(2, 3); 119 120 extern int obtain_char(struct input_file *); 121 extern void set_input(struct input_file *, FILE *, const char *); 122 extern void release_input(struct input_file *); 123 124 /* speeded-up versions of chrsave/pushback */ 125 #define PUSHBACK(c) \ 126 do { \ 127 if (bp >= endpbb) \ 128 enlarge_bufspace(); \ 129 *bp++ = (c); \ 130 } while(0) 131 132 #define CHRSAVE(c) \ 133 do { \ 134 if (ep >= endest) \ 135 enlarge_strspace(); \ 136 *ep++ = (c); \ 137 } while(0) 138 139 /* and corresponding exposure for local symbols */ 140 extern void enlarge_bufspace(void); 141 extern void enlarge_strspace(void); 142 extern unsigned char *endpbb; 143 extern char *endest; 144 145 /* trace.c */ 146 extern unsigned int trace_flags; 147 #define TRACE_ALL 512 148 extern void trace_file(const char *); 149 extern size_t trace(const char **, int, struct input_file *); 150 extern void finish_trace(size_t); 151 extern void set_trace_flags(const char *); 152 extern FILE *traceout; 153 154 extern stae *mstack; /* stack of m4 machine */ 155 extern char *sstack; /* shadow stack, for string space extension */ 156 extern FILE *active; /* active output file pointer */ 157 extern struct input_file infile[];/* input file stack (0=stdin) */ 158 extern FILE **outfile; /* diversion array(0=bitbucket) */ 159 extern int maxout; /* maximum number of diversions */ 160 extern int fp; /* m4 call frame pointer */ 161 extern int ilevel; /* input file stack pointer */ 162 extern int oindex; /* diversion index. */ 163 extern int sp; /* current m4 stack pointer */ 164 extern unsigned char *bp; /* first available character */ 165 extern unsigned char *buf; /* push-back buffer */ 166 extern unsigned char *bufbase; /* buffer base for this ilevel */ 167 extern unsigned char *bbase[]; /* buffer base per ilevel */ 168 extern char ecommt[MAXCCHARS+1];/* end character for comment */ 169 extern char *ep; /* first free char in strspace */ 170 extern char lquote[MAXCCHARS+1];/* left quote character (`) */ 171 extern char **m4wraps; /* m4wrap string default. */ 172 extern int maxwraps; /* size of m4wraps array */ 173 extern int wrapindex; /* current index in m4wraps */ 174 175 extern const char *null; /* as it says.. just a null. */ 176 extern char rquote[MAXCCHARS+1];/* right quote character (') */ 177 extern char scommt[MAXCCHARS+1];/* start character for comment */ 178 extern int synch_lines; /* line synchronisation directives */ 179 180 extern int mimic_gnu; /* behaves like gnu-m4 */ 181 extern int prefix_builtins; /* prefix builtin macros with m4_ */ 182 extern int error_warns; /* make warnings cause exit_code = 1 */ 183 extern int fatal_warns; /* make warnings fatal */ 184