1 /* This file is part of the Project Athena Zephyr Notification System.
2 * It contains source for the ZMakeAscii function.
3 *
4 * Created by: Robert French
5 *
6 * Copyright (c) 1987 by the Massachusetts Institute of Technology.
7 * For copying and distribution information, see the file
8 * "mit-copyright.h".
9 */
10
11 #include "internal.h"
12
13 static char *itox_chars = "0123456789ABCDEF";
14
ZMakeAscii(ptr,len,field,num)15 Code_t ZMakeAscii(ptr, len, field, num)
16 register char *ptr;
17 int len;
18 unsigned char *field;
19 int num;
20 {
21 int i;
22
23 for (i=0;i<num;i++) {
24 /* we need to add "0x" if we are between 4 byte pieces */
25 if ((i & 3) == 0) {
26 if (len < (i?4:3))
27 return ZERR_FIELDLEN;
28 /* except at the beginning, put a space in before the "0x" */
29 if (i) {
30 *ptr++ = ' ';
31 len--;
32 }
33 *ptr++ = '0';
34 *ptr++ = 'x';
35 len -= 2;
36 }
37 if (len < 3)
38 return ZERR_FIELDLEN;
39 *ptr++ = itox_chars[(int) (field[i] >> 4)];
40 *ptr++ = itox_chars[(int) (field[i] & 0xf)];
41 len -= 2;
42 }
43
44 *ptr = '\0';
45 return ZERR_NONE;
46 }
47
ZMakeAscii32(ptr,len,value)48 Code_t ZMakeAscii32(ptr, len, value)
49 register char *ptr;
50 int len;
51 unsigned long value;
52 {
53 if (len < 11)
54 return ZERR_FIELDLEN;
55 *ptr++ = '0';
56 *ptr++ = 'x';
57 *ptr++ = itox_chars[(value >> 28) & 0xf];
58 *ptr++ = itox_chars[(value >> 24) & 0xf];
59 *ptr++ = itox_chars[(value >> 20) & 0xf];
60 *ptr++ = itox_chars[(value >> 16) & 0xf];
61 *ptr++ = itox_chars[(value >> 12) & 0xf];
62 *ptr++ = itox_chars[(value >> 8) & 0xf];
63 *ptr++ = itox_chars[(value >> 4) & 0xf];
64 *ptr++ = itox_chars[(value >> 0) & 0xf];
65 *ptr = 0;
66 return ZERR_NONE;
67 }
68
ZMakeAscii16(ptr,len,value)69 Code_t ZMakeAscii16(ptr, len, value)
70 register char *ptr;
71 int len;
72 unsigned int value;
73 {
74 if (len < 7)
75 return ZERR_FIELDLEN;
76 *ptr++ = '0';
77 *ptr++ = 'x';
78 *ptr++ = itox_chars[(value >> 12) & 0xf];
79 *ptr++ = itox_chars[(value >> 8) & 0xf];
80 *ptr++ = itox_chars[(value >> 4) & 0xf];
81 *ptr++ = itox_chars[(value >> 0) & 0xf];
82 *ptr = 0;
83 return ZERR_NONE;
84 }
85
86