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/*++
/* NAME
/* conv_time 3
/* SUMMARY
/* time value conversion
/* SYNOPSIS
/* #include <conv_time.h>
/*
/* int conv_time(strval, timval, def_unit);
/* const char *strval;
/* int *timval;
/* int def_unit;
/* DESCRIPTION
/* conv_time() converts a numerical time value with optional
/* one-letter suffix that specifies an explicit time unit: s
/* (seconds), m (minutes), h (hours), d (days) or w (weeks).
/* Internally, time is represented in seconds.
/*
/* Arguments:
/* .IP strval
/* Input value.
/* .IP timval
/* Result pointer.
/* .IP def_unit
/* The default time unit suffix character.
/* DIAGNOSTICS
/* The result value is non-zero in case of success, zero in
/* case of a bad time value or a bad time unit suffix.
/* LICENSE
/* .ad
/* .fi
/* The Secure Mailer license must be distributed with this software.
/* AUTHOR(S)
/* Wietse Venema
/* IBM T.J. Watson Research
/* P.O. Box 704
/* Yorktown Heights, NY 10598, USA
/*
/* Wietse Venema
/* Google, Inc.
/* 111 8th Avenue
/* New York, NY 10011, USA
/*--*/
/* System library. */
#include <sys_defs.h>
#include <limits.h> /* INT_MAX */
#include <stdlib.h>
#include <errno.h>
/* Utility library. */
#include <msg.h>
/* Global library. */
#include <conv_time.h>
#define MINUTE (60)
#define HOUR (60 * MINUTE)
#define DAY (24 * HOUR)
#define WEEK (7 * DAY)
/* conv_time - convert time value */
int conv_time(const char *strval, int *timval, int def_unit)
{
char *end;
int intval;
long longval;
errno = 0;
intval = longval = strtol(strval, &end, 10);
if (*strval == 0 || errno == ERANGE || longval != intval || intval < 0
/* || (*end != 0 && end[1] != 0) */)
return (0);
switch (*end ? *end : def_unit) {
case 'w':
if (intval < INT_MAX / WEEK) {
*timval = intval * WEEK;
return (1);
} else {
return (0);
}
case 'd':
if (intval < INT_MAX / DAY) {
*timval = intval * DAY;
return (1);
} else {
return (0);
}
case 'h':
if (intval < INT_MAX / HOUR) {
*timval = intval * HOUR;
return (1);
} else {
return (0);
}
case 'm':
if (intval < INT_MAX / MINUTE) {
*timval = intval * MINUTE;
return (1);
} else {
return (0);
}
case 's':
*timval = intval;
return (1);
}
return (0);
}
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