source: buchla-68k/orig/IOLIB/DIRFNS.C@ 5f1d169

Last change on this file since 5f1d169 was 3ae31e9, checked in by Thomas Lopatic <thomas@…>, 7 years ago

Imported original source code.
  • Property mode set to 100755
File size: 2.6 KB
Line 
1/*
2 =============================================================================
3 dirfns.c -- miscellaneous directory functions
4 Version 4 -- 1987-06-04 -- D.N. Lynx Crowe
5 =============================================================================
6*/
7
8#include "stddefs.h"
9#include "biosdefs.h"
10
11extern int sprintf();
12
13static char atrcons[] = "ADVSHR";
14
15/*
16 =============================================================================
17 atrstr(atr, s) -- convert attributes to character string
18 =============================================================================
19*/
20
21char *
22atrstr(atr, s)
23register short atr;
24register char s[];
25{
26 register short i, j;
27
28 i = 0x20;
29
30 for (j = 0; j < 6; j++) {
31
32 if (atr & i)
33 s[j] = atrcons[j];
34 else
35 s[j] = '-';
36
37 i >>= 1;
38 }
39
40 s[j] = '\0';
41 return(s);
42}
43
44/*
45 */
46
47static char *mnames[] = {
48
49 "???",
50 "Jan",
51 "Feb",
52 "Mar",
53 "Apr",
54 "May",
55 "Jun",
56 "Jul",
57 "Aug",
58 "Sep",
59 "Oct",
60 "Nov",
61 "Dec"
62 };
63
64/*
65 =============================================================================
66 mname - convert month number to month name
67 =============================================================================
68*/
69
70char *
71mname(n)
72short n;
73{
74 return((n < 1 || n > 12) ? mnames[0] : mnames[n]);
75}
76
77/*
78 */
79
80/*
81 =============================================================================
82 dtunpk(din, tin, s, fmt) -- unpack the date and time from DOS format
83 into "yyyy-mm-dd hh:mm", "yyyy mmm dd hh:mm", or "mmm dd yyyy hh:mm"
84 format.
85 =============================================================================
86*/
87
88char *
89dtunpk(din, tin, s, fmt)
90short din, tin, fmt;
91char *s;
92{
93 register short ftm, fdt;
94
95 ftm = ((tin << 8) & 0xFF00) | ((tin >> 8) & 0x00FF);
96 fdt = ((din << 8) & 0xFF00) | ((din >> 8) & 0x00FF);
97
98 switch (fmt) {
99
100 case 0: /* yyyy-mm-dd hh:mm format */
101
102 sprintf(s, "%04d-%02d-%02d %02d:%02d",
103 1980 + ((fdt >> 9) & 0x7F),
104 (fdt >> 5) & 0xF,
105 fdt & 0x1F,
106 (ftm >> 11) & 0x1F,
107 (ftm >> 5) & 0x3F
108 );
109
110 s[16] = '\0';
111 break;
112
113 case 1: /* yyyy mmm dd hh:mm format */
114 default:
115
116 sprintf(s, "%04d %s %-2d %02d:%02d",
117 1980 + ((fdt >> 9) & 0x7F),
118 mname((fdt >> 5) & 0xF),
119 fdt & 0x1F,
120 (ftm >> 11) & 0x1F,
121 (ftm >> 5) & 0x3F
122 );
123
124 s[17] = '\0';
125 break;
126
127/*
128 */
129
130 case 2: /* mmm dd yyyy hh:mm format */
131
132 sprintf(s, "%s %2d %04d %02d:%02d",
133 mname((fdt >> 5) & 0xF),
134 fdt & 0x1F,
135 1980 + ((fdt >> 9) & 0x7F),
136 (ftm >> 11) & 0x1F,
137 (ftm >> 5) & 0x3F
138 );
139
140 s[17] = '\0';
141 break;
142 }
143
144 return(s);
145}
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