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