usr.bin/m4/extern.h

   1 /*      $OpenBSD: extern.h,v 1.29 2002/02/16 21:27:48 millert 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. All advertising materials mentioning features or use of this software
  20  *    must display the following acknowledgement:
  21  *      This product includes software developed by the University of
  22  *      California, Berkeley and its contributors.
  23  * 4. Neither the name of the University nor the names of its contributors
  24  *    may be used to endorse or promote products derived from this software
  25  *    without specific prior written permission.
  26  *
  27  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  28  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  29  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  30  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  31  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  32  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  33  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  34  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  35  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  36  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  37  * SUCH DAMAGE.
  38  *
  39  *      @(#)extern.h    8.1 (Berkeley) 6/6/93
  40  * $FreeBSD: src/usr.bin/m4/extern.h,v 1.12 2004/08/16 14:18:22 tjr Exp $
  41  * $DragonFly: src/usr.bin/m4/extern.h,v 1.3 2006/12/27 21:29:02 pavalos Exp $
  42  */
  43
  44 /* eval.c */
  45 extern void     eval(const char *[], int, int);
  46 extern void     dodefine(const char *, const char *);
  47 extern unsigned long expansion_id;
  48
  49 /* expr.c */
  50 extern int      expr(const char *);
  51
  52 /* gnum4.c */
  53 extern void     addtoincludepath(const char *);
  54 extern struct input_file *fopen_trypath(struct input_file *, const char *);
  55 extern void doindir(const char *[], int);
  56 extern void dobuiltin(const char *[], int);
  57 extern void dopatsubst(const char *[], int);
  58 extern void doregexp(const char *[], int);
  59
  60 extern void doprintlineno(struct input_file *);
  61 extern void doprintfilename(struct input_file *);
  62
  63 extern void doesyscmd(const char *);
  64
  65
  66 /* look.c */
  67 extern ndptr    addent(const char *);
  68 extern unsigned hash(const char *);
  69 extern ndptr    lookup(const char *);
  70 extern void     remhash(const char *, int);
  71
  72 /* main.c */
  73 extern void outputstr(const char *);
  74 extern int builtin_type(const char *);
  75 extern const char *builtin_realname(int);
  76 extern void emitline(void);
  77
  78 /* misc.c */
  79 extern void     chrsave(int);
  80 extern char     *compute_prevep(void);
  81 extern void     getdiv(int);
  82 extern ptrdiff_t indx(const char *, const char *);
  83 extern void     initspaces(void);
  84 extern void     killdiv(void);
  85 extern void     onintr(int);
  86 extern void     pbnum(int);
  87 extern void     pbunsigned(unsigned long);
  88 extern void     pbstr(const char *);
  89 extern void     putback(int);
  90 extern void     *xalloc(size_t);
  91 extern char     *xstrdup(const char *);
  92 extern void     usage(void);
  93 extern void     resizedivs(int);
  94 extern size_t   buffer_mark(void);
  95 extern void     dump_buffer(FILE *, size_t);
  96
  97 extern int      obtain_char(struct input_file *);
  98 extern void     set_input(struct input_file *, FILE *, const char *);
  99 extern void     release_input(struct input_file *);
 100
 101 /* speeded-up versions of chrsave/putback */
 102 #define PUTBACK(c)                              \
 103         do {                                    \
 104                 if (bp >= endpbb)               \
 105                         enlarge_bufspace();     \
 106                 *bp++ = (c);                    \
 107         } while(0)
 108
 109 #define CHRSAVE(c)                              \
 110         do {                                    \
 111                 if (ep >= endest)               \
 112                         enlarge_strspace();     \
 113                 *ep++ = (c);                    \
 114         } while(0)
 115
 116 /* and corresponding exposure for local symbols */
 117 extern void enlarge_bufspace(void);
 118 extern void enlarge_strspace(void);
 119 extern char *endpbb;
 120 extern char *endest;
 121
 122 /* trace.c */
 123 extern void mark_traced(const char *, int);
 124 extern int is_traced(const char *);
 125 extern void trace_file(const char *);
 126 extern ssize_t trace(const char **, int, struct input_file *);
 127 extern void finish_trace(size_t);
 128 extern int traced_macros;
 129 extern void set_trace_flags(const char *);
 130 extern FILE *traceout;
 131
 132 extern ndptr hashtab[];         /* hash table for macros etc. */
 133 extern stae *mstack;            /* stack of m4 machine */
 134 extern char *sstack;            /* shadow stack, for string space extension */
 135 extern FILE *active;            /* active output file pointer */
 136 extern struct input_file infile[];/* input file stack (0=stdin) */
 137 extern char *inname[];          /* names of these input files */
 138 extern int inlineno[];          /* current number in each input file */
 139 extern FILE **outfile;          /* diversion array(0=bitbucket) */
 140 extern int maxout;              /* maximum number of diversions */
 141 extern int fp;                  /* m4 call frame pointer */
 142 extern int ilevel;              /* input file stack pointer */
 143 extern int oindex;              /* diversion index. */
 144 extern int sp;                  /* current m4 stack pointer */
 145 extern char *bp;                /* first available character */
 146 extern char *buf;               /* push-back buffer */
 147 extern char *bufbase;           /* buffer base for this ilevel */
 148 extern char *bbase[];           /* buffer base per ilevel */
 149 extern char ecommt[MAXCCHARS+1];/* end character for comment */
 150 extern char *ep;                /* first free char in strspace */
 151 extern char lquote[MAXCCHARS+1];/* left quote character (`) */
 152 extern const char *m4wraps;     /* m4wrap string default. */
 153 extern char null[];             /* as it says.. just a null. */
 154 extern char rquote[MAXCCHARS+1];/* right quote character (') */
 155 extern char scommt[MAXCCHARS+1];/* start character for comment */
 156 extern int synccpp;             /* Line synchronisation for C preprocessor */
 157
 158 extern int mimic_gnu;           /* behaves like gnu-m4 */
 159
 160 /* get a possibly pushed-back-character, increment lineno if need be */
 161 static __inline int gpbc(void)
 162 {
 163         int chscratch;          /* Scratch space. */
 164
 165         if (bp > bufbase) {
 166                 if (*--bp)
 167                         return ((unsigned char)*bp);
 168                 else
 169                         return (EOF);
 170         }
 171         chscratch = obtain_char(infile+ilevel);
 172         if (chscratch == '\n')
 173                 ++inlineno[ilevel];
 174         return (chscratch);
 175 }