convtime.c
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上传日期:2007-01-04
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文件大小:3k
- /*
- * Copyright (c) 1998, 1999 Sendmail, Inc. and its suppliers.
- * All rights reserved.
- * Copyright (c) 1983, 1995-1997 Eric P. Allman. All rights reserved.
- * Copyright (c) 1988, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * By using this file, you agree to the terms and conditions set
- * forth in the LICENSE file which can be found at the top level of
- * the sendmail distribution.
- *
- */
- #ifndef lint
- static char id[] = "@(#)$Id: convtime.c,v 8.25 1999/06/16 21:11:26 ca Exp $";
- #endif /* ! lint */
- #include <sendmail.h>
- /*
- ** CONVTIME -- convert time
- **
- ** Takes a time as an ascii string with a trailing character
- ** giving units:
- ** s -- seconds
- ** m -- minutes
- ** h -- hours
- ** d -- days (default)
- ** w -- weeks
- ** For example, "3d12h" is three and a half days.
- **
- ** Parameters:
- ** p -- pointer to ascii time.
- ** units -- default units if none specified.
- **
- ** Returns:
- ** time in seconds.
- **
- ** Side Effects:
- ** none.
- */
- time_t
- convtime(p, units)
- char *p;
- int units;
- {
- register time_t t, r;
- register char c;
- r = 0;
- if (strcasecmp(p, "now") == 0)
- return NOW;
- while (*p != ' ')
- {
- t = 0;
- while ((c = *p++) != ' ' && isascii(c) && isdigit(c))
- t = t * 10 + (c - '0');
- if (c == ' ')
- {
- c = units;
- p--;
- }
- else if (strchr("wdhms", c) == NULL)
- {
- usrerr("Invalid time unit `%c'", c);
- c = units;
- }
- switch (c)
- {
- case 'w': /* weeks */
- t *= 7;
- /* FALLTHROUGH */
- case 'd': /* days */
- /* FALLTHROUGH */
- default:
- t *= 24;
- /* FALLTHROUGH */
- case 'h': /* hours */
- t *= 60;
- /* FALLTHROUGH */
- case 'm': /* minutes */
- t *= 60;
- /* FALLTHROUGH */
- case 's': /* seconds */
- break;
- }
- r += t;
- }
- return r;
- }
- /*
- ** PINTVL -- produce printable version of a time interval
- **
- ** Parameters:
- ** intvl -- the interval to be converted
- ** brief -- if TRUE, print this in an extremely compact form
- ** (basically used for logging).
- **
- ** Returns:
- ** A pointer to a string version of intvl suitable for
- ** printing or framing.
- **
- ** Side Effects:
- ** none.
- **
- ** Warning:
- ** The string returned is in a static buffer.
- */
- #define PLURAL(n) ((n) == 1 ? "" : "s")
- char *
- pintvl(intvl, brief)
- time_t intvl;
- bool brief;
- {
- static char buf[256];
- register char *p;
- int wk, dy, hr, mi, se;
- if (intvl == 0 && !brief)
- return "zero seconds";
- if (intvl == NOW)
- return "too long";
- /* decode the interval into weeks, days, hours, minutes, seconds */
- se = intvl % 60;
- intvl /= 60;
- mi = intvl % 60;
- intvl /= 60;
- hr = intvl % 24;
- intvl /= 24;
- if (brief)
- {
- dy = intvl;
- wk = 0;
- }
- else
- {
- dy = intvl % 7;
- intvl /= 7;
- wk = intvl;
- }
- /* now turn it into a sexy form */
- p = buf;
- if (brief)
- {
- if (dy > 0)
- {
- (void) snprintf(p, SPACELEFT(buf, p), "%d+", dy);
- p += strlen(p);
- }
- (void) snprintf(p, SPACELEFT(buf, p), "%02d:%02d:%02d",
- hr, mi, se);
- return buf;
- }
- /* use the verbose form */
- if (wk > 0)
- {
- (void) snprintf(p, SPACELEFT(buf, p), ", %d week%s", wk, PLURAL(wk));
- p += strlen(p);
- }
- if (dy > 0)
- {
- (void) snprintf(p, SPACELEFT(buf, p), ", %d day%s", dy, PLURAL(dy));
- p += strlen(p);
- }
- if (hr > 0)
- {
- (void) snprintf(p, SPACELEFT(buf, p), ", %d hour%s", hr, PLURAL(hr));
- p += strlen(p);
- }
- if (mi > 0)
- {
- (void) snprintf(p, SPACELEFT(buf, p), ", %d minute%s", mi, PLURAL(mi));
- p += strlen(p);
- }
- if (se > 0)
- {
- (void) snprintf(p, SPACELEFT(buf, p), ", %d second%s", se, PLURAL(se));
- p += strlen(p);
- }
- return (buf + 2);
- }