1 /* $OpenBSD: extern.h,v 1.40 2005/03/02 10:12:15 espie 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 59 60 /* look.c */ 61 62 #define FLAG_UNTRACED 0 63 #define FLAG_TRACED 1 64 #define FLAG_NO_TRACE 2 65 66 extern void init_macros(void); 67 extern ndptr lookup(const char *); 68 extern void mark_traced(const char *, int); 69 extern struct ohash macros; 70 71 extern struct macro_definition *lookup_macro_definition(const char *); 72 extern void macro_define(const char *, const char *); 73 extern void macro_pushdef(const char *, const char *); 74 extern void macro_popdef(const char *); 75 extern void macro_undefine(const char *); 76 extern void setup_builtin(const char *, unsigned int); 77 extern void macro_for_all(void (*)(const char *, struct macro_definition *)); 78 #define macro_getdef(p) ((p)->d) 79 #define macro_name(p) ((p)->name) 80 #define macro_builtin_type(p) ((p)->builtin_type) 81 #define is_traced(p) ((p)->trace_flags == FLAG_NO_TRACE ? (trace_flags & TRACE_ALL) : (p)->trace_flags) 82 83 extern ndptr macro_getbuiltin(const char *); 84 85 /* main.c */ 86 extern void outputstr(const char *); 87 extern void do_emit_synchline(void); 88 #define emit_synchline() do { if (synch_lines) do_emit_synchline(); } while(0) 89 90 /* misc.c */ 91 extern void chrsave(int); 92 extern char *compute_prevep(void); 93 extern void getdiv(int); 94 extern ptrdiff_t indx(const char *, const char *); 95 extern void initspaces(void); 96 extern void killdiv(void); 97 extern void onintr(int); 98 extern void pbnum(int); 99 extern void pbunsigned(unsigned long); 100 extern void pbstr(const char *); 101 extern void putback(int); 102 extern void *xalloc(size_t, const char *fmt, ...); 103 extern void *xrealloc(void *, size_t, const char *fmt, ...); 104 extern char *xstrdup(const char *); 105 extern void usage(void); 106 extern void resizedivs(int); 107 extern size_t buffer_mark(void); 108 extern void dump_buffer(FILE *, size_t); 109 110 extern int obtain_char(struct input_file *); 111 extern void set_input(struct input_file *, FILE *, const char *); 112 extern void release_input(struct input_file *); 113 114 /* speeded-up versions of chrsave/putback */ 115 #define PUTBACK(c) \ 116 do { \ 117 if (bp >= endpbb) \ 118 enlarge_bufspace(); \ 119 *bp++ = (c); \ 120 } while(0) 121 122 #define CHRSAVE(c) \ 123 do { \ 124 if (ep >= endest) \ 125 enlarge_strspace(); \ 126 *ep++ = (c); \ 127 } while(0) 128 129 /* and corresponding exposure for local symbols */ 130 extern void enlarge_bufspace(void); 131 extern void enlarge_strspace(void); 132 extern char *endpbb; 133 extern char *endest; 134 135 /* trace.c */ 136 extern unsigned int trace_flags; 137 #define TRACE_ALL 512 138 extern void trace_file(const char *); 139 extern ssize_t trace(const char **, int, struct input_file *); 140 extern void finish_trace(size_t); 141 extern void set_trace_flags(const char *); 142 extern FILE *traceout; 143 144 extern ndptr hashtab[]; /* hash table for macros etc. */ 145 extern stae *mstack; /* stack of m4 machine */ 146 extern char *sstack; /* shadow stack, for string space extension */ 147 extern FILE *active; /* active output file pointer */ 148 extern struct input_file infile[];/* input file stack (0=stdin) */ 149 extern FILE **outfile; /* diversion array(0=bitbucket) */ 150 extern int maxout; /* maximum number of diversions */ 151 extern int fp; /* m4 call frame pointer */ 152 extern int ilevel; /* input file stack pointer */ 153 extern int oindex; /* diversion index. */ 154 extern int sp; /* current m4 stack pointer */ 155 extern char *bp; /* first available character */ 156 extern char *buf; /* push-back buffer */ 157 extern char *bufbase; /* buffer base for this ilevel */ 158 extern char *bbase[]; /* buffer base per ilevel */ 159 extern char ecommt[MAXCCHARS+1];/* end character for comment */ 160 extern char *ep; /* first free char in strspace */ 161 extern char lquote[MAXCCHARS+1];/* left quote character (`) */ 162 extern char **m4wraps; /* m4wrap string default. */ 163 extern int maxwraps; /* size of m4wraps array */ 164 extern int wrapindex; /* current index in m4wraps */ 165 166 extern char *null; /* as it says.. just a null. */ 167 extern char rquote[MAXCCHARS+1];/* right quote character (') */ 168 extern char scommt[MAXCCHARS+1];/* start character for comment */ 169 extern int synch_lines; /* line synchronisation directives */ 170 171 extern int mimic_gnu; /* behaves like gnu-m4 */ 172 173