1 /* $OpenBSD: extern.h,v 1.49 2009/10/14 17:19:47 sthen Exp $ */ 2 /* $NetBSD: extern.h,v 1.17 2015/01/29 03:27:06 christos 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 62 /* look.c */ 63 64 #define FLAG_UNTRACED 0 65 #define FLAG_TRACED 1 66 #define FLAG_NO_TRACE 2 67 68 extern void init_macros(void); 69 extern ndptr lookup(const char *); 70 extern void mark_traced(const char *, int); 71 extern struct ohash macros; 72 73 extern struct macro_definition *lookup_macro_definition(const char *); 74 extern void macro_define(const char *, const char *); 75 extern void macro_pushdef(const char *, const char *); 76 extern void macro_popdef(const char *); 77 extern void macro_undefine(const char *); 78 extern void setup_builtin(const char *, unsigned int); 79 extern void macro_for_all(void (*)(const char *, struct macro_definition *)); 80 #define macro_getdef(p) ((p)->d) 81 #define macro_name(p) ((p)->name) 82 #define macro_builtin_type(p) ((p)->builtin_type) 83 #define is_traced(p) ((p)->trace_flags == FLAG_NO_TRACE ? (trace_flags & TRACE_ALL) : (p)->trace_flags) 84 85 extern ndptr macro_getbuiltin(const char *); 86 87 /* main.c */ 88 extern void outputstr(const char *); 89 extern void do_emit_synchline(void); 90 #define emit_synchline() do { if (synch_lines) do_emit_synchline(); } while(0) 91 92 /* misc.c */ 93 extern void chrsave(int); 94 extern char *compute_prevep(void); 95 extern void getdiv(int); 96 extern ptrdiff_t indx(const char *, const char *); 97 extern void initspaces(void); 98 extern void killdiv(void); 99 extern void pbnum(int); 100 extern void pbnumbase(int, int, int); 101 extern void pbunsigned(unsigned long); 102 extern void pbstr(const char *); 103 extern void pushback(int); 104 extern void *xalloc(size_t, const char *fmt, ...) __printflike(2, 3); 105 extern void *xrealloc(void *, size_t, const char *fmt, ...) 106 __printflike(3, 4); 107 extern char *xstrdup(const char *); 108 extern void resizedivs(int); 109 extern size_t buffer_mark(void); 110 extern void dump_buffer(FILE *, size_t); 111 extern void __dead m4errx(int, const char *, ...) __printflike(2, 3); 112 113 extern int obtain_char(struct input_file *); 114 extern void set_input(struct input_file *, FILE *, const char *); 115 extern void release_input(struct input_file *); 116 117 /* speeded-up versions of chrsave/pushback */ 118 #define PUSHBACK(c) \ 119 do { \ 120 if (bp >= endpbb) \ 121 enlarge_bufspace(); \ 122 *bp++ = (c); \ 123 } while(0) 124 125 #define CHRSAVE(c) \ 126 do { \ 127 if (ep >= endest) \ 128 enlarge_strspace(); \ 129 *ep++ = (c); \ 130 } while(0) 131 132 /* and corresponding exposure for local symbols */ 133 extern void enlarge_bufspace(void); 134 extern void enlarge_strspace(void); 135 extern unsigned char *endpbb; 136 extern char *endest; 137 138 /* trace.c */ 139 extern unsigned int trace_flags; 140 #define TRACE_ALL 512 141 extern void trace_file(const char *); 142 extern size_t trace(const char **, int, struct input_file *); 143 extern void finish_trace(size_t); 144 extern void set_trace_flags(const char *); 145 extern FILE *traceout; 146 147 extern ndptr hashtab[]; /* hash table for macros etc. */ 148 extern stae *mstack; /* stack of m4 machine */ 149 extern char *sstack; /* shadow stack, for string space extension */ 150 extern FILE *active; /* active output file pointer */ 151 extern struct input_file infile[];/* input file stack (0=stdin) */ 152 extern FILE **outfile; /* diversion array(0=bitbucket) */ 153 extern int maxout; /* maximum number of diversions */ 154 extern int fp; /* m4 call frame pointer */ 155 extern int ilevel; /* input file stack pointer */ 156 extern int oindex; /* diversion index. */ 157 extern int sp; /* current m4 stack pointer */ 158 extern unsigned char *bp; /* first available character */ 159 extern unsigned char *buf; /* push-back buffer */ 160 extern unsigned char *bufbase; /* buffer base for this ilevel */ 161 extern unsigned char *bbase[]; /* buffer base per ilevel */ 162 extern char ecommt[MAXCCHARS+1];/* end character for comment */ 163 extern char *ep; /* first free char in strspace */ 164 extern char lquote[MAXCCHARS+1];/* left quote character (`) */ 165 extern char **m4wraps; /* m4wrap string default. */ 166 extern int maxwraps; /* size of m4wraps array */ 167 extern int wrapindex; /* current index in m4wraps */ 168 169 extern const char *null; /* as it says.. just a null. */ 170 extern char rquote[MAXCCHARS+1];/* right quote character (') */ 171 extern char scommt[MAXCCHARS+1];/* start character for comment */ 172 extern int synch_lines; /* line synchronisation directives */ 173 174 extern int mimic_gnu; /* behaves like gnu-m4 */ 175 extern int prefix_builtins; /* prefix builtin macros with m4_ */ 176