distrib/utils/sysinst/txtwalk.h

   1 /*      $NetBSD: txtwalk.h,v 1.9 2003/11/30 14:36:44 dsl Exp $  */
   2
   3 /*
   4  * Copyright 1997 Piermont Information Systems Inc.
   5  * All rights reserved.
   6  *
   7  * Written by Philip A. Nelson for Piermont Information Systems Inc.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  * 3. All advertising materials mentioning features or use of this software
  18  *    must display the following acknowledgement:
  19  *      This product includes software developed for the NetBSD Project by
  20  *      Piermont Information Systems Inc.
  21  * 4. The name of Piermont Information Systems Inc. may not be used to endorse
  22  *    or promote products derived from this software without specific prior
  23  *    written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY PIERMONT INFORMATION SYSTEMS INC. ``AS IS''
  26  * AND 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 PIERMONT INFORMATION SYSTEMS INC. BE
  29  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  35  * THE POSSIBILITY OF SUCH DAMAGE.
  36  *
  37  */
  38
  39 /* txtwalk.h - definitions for textwalk to be useful! */
  40
  41 /* data extractions */
  42 enum kind {INT, STR};
  43
  44 struct data {
  45         enum kind what;
  46         union udata {
  47                 int   i_val;
  48                 char *s_val;
  49         } u;
  50 };
  51
  52 /* Strings of interest! */
  53 struct lookfor {
  54         const char *head;       /* Line starts this way. */
  55         const char *fmt;        /* Expected format. */
  56         const char *todo;       /* What to do ... */
  57         void *var;      /* Possible var */
  58         size_t  nument;    /* Number of entries in the "array" */
  59         size_t  size;   /* size of string variables */
  60         int (*func) (struct data *list, size_t num);    /* function to call */
  61 };
  62
  63 /*  Format string for the expected string:
  64  *  space => skip white space
  65  *  %ic   => skip until you find char c, if c == space, matches any white space
  66  *  %d    => expect an integer
  67  *  %s    => expect a non-white space string
  68  *  \0    => ignore remainder of line
  69  *  %%    => match a %
  70  *
  71  */
  72
  73 /* What to do ....
  74  *
  75  *  a -- assign to var, $n is data from the expect strings.
  76  *  c -- call the function
  77  *
  78  */
  79
  80 /* prototypes */
  81
  82 int  walk(char *, size_t, const struct lookfor *, size_t);
  83
  84
  85 /* Maximum number of matched data elements per line! */
  86 #define MAXDATA 20
  87