xref: /titanic_44/usr/src/cmd/sendmail/src/convtime.c (revision a60349c89adffc0902b2353230891d8e7f2b24d9)
1 /*
2  * Copyright (c) 1998-2001 Sendmail, Inc. and its suppliers.
3  *	All rights reserved.
4  * Copyright (c) 1983, 1995-1997 Eric P. Allman.  All rights reserved.
5  * Copyright (c) 1988, 1993
6  *	The Regents of the University of California.  All rights reserved.
7  *
8  * By using this file, you agree to the terms and conditions set
9  * forth in the LICENSE file which can be found at the top level of
10  * the sendmail distribution.
11  *
12  */
13 
14 #pragma ident	"%Z%%M%	%I%	%E% SMI"
15 
16 #include <sendmail.h>
17 
18 SM_RCSID("@(#)$Id: convtime.c,v 8.36 2001/02/13 22:32:08 ca Exp $")
19 
20 /*
21 **  CONVTIME -- convert time
22 **
23 **	Takes a time as an ascii string with a trailing character
24 **	giving units:
25 **	  s -- seconds
26 **	  m -- minutes
27 **	  h -- hours
28 **	  d -- days (default)
29 **	  w -- weeks
30 **	For example, "3d12h" is three and a half days.
31 **
32 **	Parameters:
33 **		p -- pointer to ascii time.
34 **		units -- default units if none specified.
35 **
36 **	Returns:
37 **		time in seconds.
38 **
39 **	Side Effects:
40 **		none.
41 */
42 
43 time_t
44 convtime(p, units)
45 	char *p;
46 	int units;
47 {
48 	register time_t t, r;
49 	register char c;
50 	bool pos = true;
51 
52 	r = 0;
53 	if (sm_strcasecmp(p, "now") == 0)
54 		return NOW;
55 	if (*p == '-')
56 	{
57 		pos = false;
58 		++p;
59 	}
60 	while (*p != '\0')
61 	{
62 		t = 0;
63 		while ((c = *p++) != '\0' && isascii(c) && isdigit(c))
64 			t = t * 10 + (c - '0');
65 		if (c == '\0')
66 		{
67 			c = units;
68 			p--;
69 		}
70 		else if (strchr("wdhms", c) == NULL)
71 		{
72 			usrerr("Invalid time unit `%c'", c);
73 			c = units;
74 		}
75 		switch (c)
76 		{
77 		  case 'w':		/* weeks */
78 			t *= 7;
79 			/* FALLTHROUGH */
80 
81 		  case 'd':		/* days */
82 			/* FALLTHROUGH */
83 		  default:
84 			t *= 24;
85 			/* FALLTHROUGH */
86 
87 		  case 'h':		/* hours */
88 			t *= 60;
89 			/* FALLTHROUGH */
90 
91 		  case 'm':		/* minutes */
92 			t *= 60;
93 			/* FALLTHROUGH */
94 
95 		  case 's':		/* seconds */
96 			break;
97 		}
98 		r += t;
99 	}
100 
101 	return pos ? r : -r;
102 }
103 /*
104 **  PINTVL -- produce printable version of a time interval
105 **
106 **	Parameters:
107 **		intvl -- the interval to be converted
108 **		brief -- if true, print this in an extremely compact form
109 **			(basically used for logging).
110 **
111 **	Returns:
112 **		A pointer to a string version of intvl suitable for
113 **			printing or framing.
114 **
115 **	Side Effects:
116 **		none.
117 **
118 **	Warning:
119 **		The string returned is in a static buffer.
120 */
121 
122 #define PLURAL(n)	((n) == 1 ? "" : "s")
123 
124 char *
125 pintvl(intvl, brief)
126 	time_t intvl;
127 	bool brief;
128 {
129 	static char buf[256];
130 	register char *p;
131 	int wk, dy, hr, mi, se;
132 
133 	if (intvl == 0 && !brief)
134 		return "zero seconds";
135 	if (intvl == NOW)
136 		return "too long";
137 
138 	/* decode the interval into weeks, days, hours, minutes, seconds */
139 	se = intvl % 60;
140 	intvl /= 60;
141 	mi = intvl % 60;
142 	intvl /= 60;
143 	hr = intvl % 24;
144 	intvl /= 24;
145 	if (brief)
146 	{
147 		dy = intvl;
148 		wk = 0;
149 	}
150 	else
151 	{
152 		dy = intvl % 7;
153 		intvl /= 7;
154 		wk = intvl;
155 	}
156 
157 	/* now turn it into a sexy form */
158 	p = buf;
159 	if (brief)
160 	{
161 		if (dy > 0)
162 		{
163 			(void) sm_snprintf(p, SPACELEFT(buf, p), "%d+", dy);
164 			p += strlen(p);
165 		}
166 		(void) sm_snprintf(p, SPACELEFT(buf, p), "%02d:%02d:%02d",
167 				   hr, mi, se);
168 		return buf;
169 	}
170 
171 	/* use the verbose form */
172 	if (wk > 0)
173 	{
174 		(void) sm_snprintf(p, SPACELEFT(buf, p), ", %d week%s", wk,
175 				   PLURAL(wk));
176 		p += strlen(p);
177 	}
178 	if (dy > 0)
179 	{
180 		(void) sm_snprintf(p, SPACELEFT(buf, p), ", %d day%s", dy,
181 				   PLURAL(dy));
182 		p += strlen(p);
183 	}
184 	if (hr > 0)
185 	{
186 		(void) sm_snprintf(p, SPACELEFT(buf, p), ", %d hour%s", hr,
187 				   PLURAL(hr));
188 		p += strlen(p);
189 	}
190 	if (mi > 0)
191 	{
192 		(void) sm_snprintf(p, SPACELEFT(buf, p), ", %d minute%s", mi,
193 				   PLURAL(mi));
194 		p += strlen(p);
195 	}
196 	if (se > 0)
197 	{
198 		(void) sm_snprintf(p, SPACELEFT(buf, p), ", %d second%s", se,
199 				   PLURAL(se));
200 		p += strlen(p);
201 	}
202 
203 	return (buf + 2);
204 }
205