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