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      1 /*	$NetBSD: txtwalk.h,v 1.2 2019/08/07 10:08:04 martin 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. The name of Piermont Information Systems Inc. may not be used to endorse
     18  *    or promote products derived from this software without specific prior
     19  *    written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY PIERMONT INFORMATION SYSTEMS INC. ``AS IS''
     22  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  * ARE DISCLAIMED. IN NO EVENT SHALL PIERMONT INFORMATION SYSTEMS INC. BE
     25  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     26  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     27  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     28  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     29  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     30  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
     31  * THE POSSIBILITY OF SUCH DAMAGE.
     32  *
     33  */
     34 
     35 /* txtwalk.h - definitions for textwalk to be useful! */
     36 
     37 /* data extractions */
     38 enum kind {INT, STR};
     39 
     40 struct data {
     41 	enum kind what;
     42 	union udata {
     43 		int   i_val;
     44 		char *s_val;
     45 	} u;
     46 };
     47 
     48 /* Strings of interest! */
     49 struct lookfor {
     50 	const char *head;	/* Line starts this way. */
     51 	const char *fmt;	/* Expected format. */
     52 	const char *todo;	/* What to do ... */
     53 	void *var;		/* Possible var or additional args */
     54 	size_t  nument;		/* Number of entries in the "array" */
     55 	size_t  size;		/* size of string variables */
     56 	int (*func) (struct data *list, size_t num, const struct lookfor*);
     57 				/* function to call */
     58 };
     59 
     60 /*  Format string for the expected string:
     61  *  space => skip white space
     62  *  %ic   => skip until you find char c, if c == space, matches any white space
     63  *  %d    => expect an integer
     64  *  %s    => expect a non-white space string
     65  *  \0    => ignore remainder of line
     66  *  %%    => match a %
     67  *
     68  */
     69 
     70 /* What to do ....
     71  *
     72  *  a -- assign to var, $n is data from the expect strings.
     73  *  c -- call the function
     74  *
     75  */
     76 
     77 /* prototypes */
     78 
     79 int  walk(char *, size_t, const struct lookfor *, size_t);
     80 
     81 
     82 /* Maximum number of matched data elements per line! */
     83 #define MAXDATA 20
     84 
     85