1/*	$NetBSD: name_code.c,v 1.2 2017/02/14 01:16:49 christos Exp $	*/
2
3/*++
4/* NAME
5/*	name_code 3
6/* SUMMARY
7/*	name to number table mapping
8/* SYNOPSIS
9/*	#include <name_code.h>
10/*
11/*	typedef struct {
12/* .in +4
13/*		const char *name;
14/*		int code;
15/* .in -4
16/*	} NAME_CODE;
17/*
18/*	int	name_code(table, flags, name)
19/*	const NAME_CODE *table;
20/*	int	flags;
21/*	const char *name;
22/*
23/*	const char *str_name_code(table, code)
24/*	const NAME_CODE *table;
25/*	int	code;
26/* DESCRIPTION
27/*	This module does simple name<->number mapping. The process
28/*	is controlled by a table of (name, code) values.
29/*	The table is terminated with a null pointer and a code that
30/*	corresponds to "name not found".
31/*
32/*	name_code() looks up the code that corresponds with the name.
33/*	The lookup is case insensitive. The flags argument specifies
34/*	zero or more of the following:
35/* .IP NAME_CODE_FLAG_STRICT_CASE
36/*	String lookups are case sensitive.
37/* .PP
38/*	For convenience the constant NAME_CODE_FLAG_NONE requests
39/*	no special processing.
40/*
41/*	str_name_code() translates a number to its equivalent string.
42/* DIAGNOSTICS
43/*	When the search fails, the result is the "name not found" code
44/*	or the null pointer, respectively.
45/* LICENSE
46/* .ad
47/* .fi
48/*	The Secure Mailer license must be distributed with this software.
49/* AUTHOR(S)
50/*	Wietse Venema
51/*	IBM T.J. Watson Research
52/*	P.O. Box 704
53/*	Yorktown Heights, NY 10598, USA
54/*--*/
55
56/* System library. */
57
58#include <sys_defs.h>
59#include <string.h>
60
61/* Utility library. */
62
63#include <name_code.h>
64
65/* name_code - look up code by name */
66
67int     name_code(const NAME_CODE *table, int flags, const char *name)
68{
69    const NAME_CODE *np;
70    int     (*lookup) (const char *, const char *);
71
72    if (flags & NAME_CODE_FLAG_STRICT_CASE)
73	lookup = strcmp;
74    else
75	lookup = strcasecmp;
76
77    for (np = table; np->name; np++)
78	if (lookup(name, np->name) == 0)
79	    break;
80    return (np->code);
81}
82
83/* str_name_code - look up name by code */
84
85const char *str_name_code(const NAME_CODE *table, int code)
86{
87    const NAME_CODE *np;
88
89    for (np = table; np->name; np++)
90	if (code == np->code)
91	    break;
92    return (np->name);
93}
94