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    Length: 4837 (0x12e5)
    Types: TextFile
    Names: »prim2time.c«

└─⟦3d0c2be1b⟧ Bits:30001254 ISODE-5.0 Tape
    └─⟦eba4602b1⟧ »./isode-5.0.tar.Z« 
        └─⟦d3ac74d73⟧ 
            └─⟦this⟧ »isode-5.0/psap/prim2time.c« 

TextFile

/* prim2time.c - presentation element to time string */

#ifndef	lint
static char *rcsid = "$Header: /f/osi/psap/RCS/prim2time.c,v 6.0 89/03/18 23:38:59 mrose Rel $";
#endif

/* 
 * $Header: /f/osi/psap/RCS/prim2time.c,v 6.0 89/03/18 23:38:59 mrose Rel $
 *
 *
 * $Log:	prim2time.c,v $
 * Revision 6.0  89/03/18  23:38:59  mrose
 * Release 5.0
 * 
 */

/*
 *				  NOTICE
 *
 *    Acquisition, use, and distribution of this module and related
 *    materials are subject to the restrictions of a license agreement.
 *    Consult the Preface in the User's Manual for the full terms of
 *    this agreement.
 *
 */


/* LINTLIBRARY */

#include <ctype.h>
#include <stdio.h>
#include "psap.h"

/* \f

   DATA */

#define	YEAR(y)		((y) >= 100 ? (y) : (y) + 1900)

long	get_usec ();

/* \f

 */

UTC	prim2time (pe, generalized)
register PE	pe;
int	generalized;
{
    int     len;
    register char  *cp;
    register UTC    u;
    UTC	   (*aux) ();

    aux = generalized ? str2gent : str2utct;
    switch (pe -> pe_form) {
	case PE_FORM_PRIM: 
	    if (pe -> pe_prim == NULLPED)
		return pe_seterr (pe, PE_ERR_PRIM, NULLUTC);
	    u = (*aux) ((char *) pe -> pe_prim, (int) pe -> pe_len);
	    break;

	case PE_FORM_CONS: 
	    if ((cp = prim2str (pe, &len)) == NULLCP)
		return NULLUTC;
	    u = len ? (*aux) (cp, len) : NULLUTC;
	    free (cp);
	    break;
    }

    return (u ? u : pe_seterr (pe, generalized ? PE_ERR_GENT : PE_ERR_UTCT,
			NULLUTC));
}

/* \f

 */

UTC	str2utct (cp, len)
register char  *cp;
register int	len;
{
    int     year,
	    hours,
            mins;
    register int    zone;
    static UTCtime  ut;
    register UTC    u = &ut;

    bzero ((char *) u, sizeof *u);

    if (sscanf (cp, "%2d%2d%2d%2d%2d", &year, &u -> ut_mon,
		&u -> ut_mday, &u -> ut_hour, &u -> ut_min) != 5)
	return NULLUTC;
    cp += 10, len -= 10;
    u -> ut_year = YEAR (year);

    if (len > 0 && isdigit (*cp)) {
	if (sscanf (cp, "%2d", &u -> ut_sec) != 1)
	    return NULLUTC;
	u -> ut_flags |= UT_SEC;
	cp += 2, len -= 2;
    }

    if (len > 0) {
	switch (*cp) {
	    case 'Z': 
		cp++, len--;
		break;

	    case '+': 
	    case '-': 
		if (sscanf (cp + 1, "%2d%2d", &hours, &mins) != 2)
		    return NULLUTC;
		zone = hours * 60 + mins;
		u -> ut_zone = *cp == '+' ? zone : -zone;
		cp += 5, len -= 5;
		break;

	    default: 
		return NULLUTC;
	}
	u -> ut_flags |= UT_ZONE;
    }
    if (len != 0)
	return NULLUTC;

    return u;
}

/* \f

 */

UTC	str2gent (cp, len)
char   *cp;
int	len;
{
    int     hours,
            mins;
    long    usec;
    register int    zone;
    static UTCtime    ut;
    register UTC      u = &ut;

    bzero ((char *) u, sizeof *u);

    if (sscanf (cp, "%4d%2d%2d%2d", &u -> ut_year, &u -> ut_mon,
		&u -> ut_mday, &u -> ut_hour) != 4)
	return NULLUTC;
    cp += 10, len -= 10;

    if (len > 0)
	switch (*cp) {
	    case '.':
	    case ',':
		cp++, len--;
		if ((usec = get_usec (&cp, &len)) < 0)
		    return NULLUTC;
		u -> ut_min = (usec * 60) / 1000000;
		usec -= (u -> ut_min * 1000000) / 60;
		u -> ut_sec = (usec * 60) / 1000000;
		usec -= (u -> ut_sec * 1000000) / 60;
		u -> ut_usec = usec;
		u -> ut_flags |= UT_SEC | UT_USEC;
		goto get_zone;

	    default:
		if (isdigit (*cp)) {
		    if (sscanf (cp, "%2d", &u -> ut_min) != 1)
			return NULLUTC;
		    cp += 2, len -= 2;
		}
		break;
	}

    if (len > 0)
	switch (*cp) {
	    case '.':
	    case ',':
		cp++, len--;
		if ((usec = get_usec (&cp, &len)) < 0)
		    return NULLUTC;
		u -> ut_sec = (usec * 60) / 1000000;
		usec -= (u -> ut_sec * 1000000) / 60;
		u -> ut_usec = usec;
		u -> ut_flags |= UT_SEC | UT_USEC;
		goto get_zone;

	    default:
		if (isdigit (*cp)) {
		    if (sscanf (cp, "%2d", &u -> ut_sec) != 1)
			return NULLUTC;
		    u -> ut_flags |= UT_SEC;
		    cp += 2, len -= 2;
		}
		break;
	}
	    
    if (len > 0)
	switch (*cp) {
	    case '.':
	    case ',':
		cp++, len--;
		if ((usec = get_usec (&cp, &len)) < 0)
		    return NULLUTC;
		u -> ut_usec = usec;
		u -> ut_flags |= UT_USEC;
		goto get_zone;

	    default:
		break;
	}
	    
get_zone: ;
    if (len > 0) {
	switch (*cp) {
	    case 'Z': 
		cp++, len--;
		break;

	    case '+': 
	    case '-': 
		if (sscanf (cp + 1, "%2d%2d", &hours, &mins) != 2)
		    return NULLUTC;
		zone = hours * 60 + mins;
		u -> ut_zone = *cp == '+' ? zone : -zone;
		cp += 5, len -= 5;
		break;

	    default: 
		return NULLUTC;
	}
	u -> ut_flags |= UT_ZONE;
    }
    if (len != 0)
	return NULLUTC;

    return u;
}

/* \f

 */

/* not perfect, but what is? */

static long  get_usec (cp, len)
char  **cp;
int    *len;
{
    register int    j;
    register long   i;
    register char  *dp;

    i = 0L;
    for (dp = *cp, j = 0; isdigit (*dp); dp++, j++)
	if (j < 6)
	    i = i * 10L + (long) (*dp - '0');

    *cp = dp, *len -= j;

    while (j++ < 6)
	i *= 10L;

    return i;
}