Attempt to make code more readable
[dragonfly.git] / lib / libipx / ipx_ntoa.c
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1/*
2 * Copyright (c) 1986, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * 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 THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
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32 *
33 * @(#)ipx_ntoa.c
660c873b 34 * $DragonFly: src/lib/libipx/ipx_ntoa.c,v 1.3 2004/10/25 19:38:45 drhodus Exp $
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35 */
36
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37#include <sys/param.h>
38#include <netipx/ipx.h>
39#include <stdio.h>
40
41char *
42ipx_ntoa(addr)
43 struct ipx_addr addr;
44{
45 static char obuf[40];
46 union { union ipx_net net_e; u_long long_e; } net;
47 u_short port = htons(addr.x_port);
660c873b 48 char *cp;
984263bc 49 char *cp2;
660c873b 50 u_char *up = addr.x_host.c_host;
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51 u_char *uplim = up + 6;
52 static char *spectHex();
53
54 net.net_e = addr.x_net;
55 sprintf(obuf, "%lx", (u_long)ntohl(net.long_e));
56 cp = spectHex(obuf);
57 cp2 = cp + 1;
58 while (*up==0 && up < uplim) up++;
59 if (up == uplim) {
60 if (port) {
61 sprintf(cp, ".0");
62 cp += 2;
63 }
64 } else {
65 sprintf(cp, ".%x", *up++);
66 while (up < uplim) {
67 while (*cp) cp++;
68 sprintf(cp, "%02x", *up++);
69 }
70 cp = spectHex(cp2);
71 }
72 if (port) {
73 sprintf(cp, ".%x", port);
74 spectHex(cp + 1);
75 }
76 return (obuf);
77}
78
79static char *
80spectHex(p0)
81 char *p0;
82{
83 int ok = 0;
84 int nonzero = 0;
660c873b 85 char *p = p0;
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86 for (; *p; p++) switch (*p) {
87
88 case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
89 case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
90 ok = 1;
91 case '1': case '2': case '3': case '4': case '5':
92 case '6': case '7': case '8': case '9':
93 nonzero = 1;
94 }
95 if (nonzero && !ok) { *p++ = 'H'; *p = 0; }
96 return (p);
97}