[moira.git] / gen / moddiff.dc

/* $Header$
 *
 *  (c) Copyright 1990 by the Massachusetts Institute of Technology.
 *  For copying and distribution information, please see the file
 *  <mit-copyright.h>.
 */

#include <mit-copyright.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <moira.h>
#include <moira_site.h>
EXEC SQL INCLUDE sqlca;

static char * MONTHNAMES[] = {"january", "february", "march", "april", "may", 
			      "june", "july", "august", "september",
			      "october", "november", "december"};

static int MONTHDAYS[] = {0,0,31,59,90,120,151,181,212,243,273,304,334};


/****************************************************************/
/**  Return the difference between the modtime & table modtime **/
/**  in flag variable.  Return 0 if success, else errno.       **/
/****************************************************************/

int ModDiff (flag, tbl, ModTime)
int *flag;
char *tbl;
time_t ModTime;
{
    int filetimeno;
    EXEC SQL BEGIN DECLARE SECTION;
    char filetime[29], *tbl_name;
    EXEC SQL END DECLARE SECTION;

    *flag = 0;
    tbl_name = tbl;
    EXEC SQL SELECT modtime INTO :filetime FROM tblstats WHERE tbl = :tbl_name;
    if (sqlca.sqlcode != 0) {
	fprintf(stderr, "Query failed: %d\n", sqlca.sqlcode);
	return(MR_DATE);
    }
    if (Date2Sec (filetime, &filetimeno)) {
	fprintf(stderr,"Unable to parse mod. date for file %s\n", tbl);
	return(MR_DATE);
    }
    *flag = (filetimeno - ModTime);
    return(0);
}


/***************************************************/
/**  convert Unix-time (# of seconds since 1970)  **/
/**  from a date-time string                      **/
/**  Return 1 if failure, 0 if success            **/
/***************************************************/

Date2Sec(DS, UTime)
char *DS;
struct timeval *UTime;
{
    static int defzone = -1;
    int Day, Month, Year, Hour, Minute, Sec, Err, TotalDays, Iter;

    if (defzone == -1) {
	struct timeval tv;
	struct timezone tz;

	if (gettimeofday(&tv, &tz))
	  defzone = 0;
	else
	  defzone = tz.tz_minuteswest;
    }

#ifdef DEBUG
    printf("Date2Sec(\"%s\", %d.%d)\n", DS, UTime->tv_sec, UTime->tv_usec);
#endif
    Err = ParseDateString (DS, &Day, &Month, &Year, &Hour, &Minute,&Sec);
#ifdef DEBUG
    printf("date=%d/%d/%d %d:%d:%d, err=%d\n", Day, Month, Year,
	   Hour, Minute, Sec, Err);
#endif
    if (Err) return (Err);

    if (Year < 1970) {
	for (TotalDays = 0, Iter = 1969; Iter > Year; Iter--) {
	    TotalDays += NumdaysY(Iter);}
#ifdef DEBUG
	printf("Days in years           : %d\n", TotalDays);
#endif
	TotalDays += (NumdaysY(Year) - NumdaysM(Month, Year) - Day);
#ifdef DEBUG
	printf("Days after months & days: %d\n", TotalDays);
#endif
	UTime->tv_sec = -((((24 * TotalDays) + 24 - Hour) * 60 - Minute) * 60 -
			  Sec) + defzone;
	UTime->tv_usec = 0;
	return (0);
    } else {
	for (TotalDays = 0, Iter = 1970; Iter < Year; Iter++) {
	    TotalDays += NumdaysY(Iter);}
#ifdef DEBUG
	printf("Days in years    : %d\n", TotalDays);
#endif
	TotalDays += NumdaysM(Month, Year);
#ifdef DEBUG
	printf("Days after months: %d\n", TotalDays);
#endif
	TotalDays += (Day - 1);
#ifdef DEBUG
	printf("Days after Days  : %d\n", TotalDays);
#endif
	UTime->tv_sec = (((24 * TotalDays) + Hour) * 60 + Minute) * 60 +
			Sec + defzone;
	UTime->tv_usec = 0;
	return (0);
    }
}


/*****************************************/
/**  Return the # of days in the Year   **/
/*****************************************/

static int NumdaysY(Year)
int Year;
{
    return (365 + Leapyear(Year));
}


/*****************************************/
/**  Return the # of days in the Month  **/
/*****************************************/

static int NumdaysM(Month, Year)
int Month, Year;
{
    if ((Month > 2) && (Leapyear (Year)))
      return (MONTHDAYS[Month] + 1);
    else
      return (MONTHDAYS[Month]);
}


/*****************************************/
/**  Return 1 if a leapyear, else 0     **/
/*****************************************/

static int Leapyear (Year)
int Year;
{
    if ((Year % 4) && (!(Year % 100) || (Year % 1000)))
      return (0);
    else
      return (1);
}


/************************************************/
/**  Compute numeric breakdown of date string  **/
/**  Return 0 if success, 1 if failure         **/
/************************************************/

static int ParseDateString (DS, Day, Month, Year, Hour, Minute, Sec)
char *DS;
int *Day, *Month, *Year, *Hour, *Minute, *Sec;
{
    int Gotten;
    char *M, *D, *Temp;
    int Y=0, H=0, Min=0, S=0, DayNum=0, MonthNum=0;

    M = (char *)malloc(strlen(DS));
    D = (char *)malloc(strlen(DS));
    if (!(M && D)) return (1);
    Gotten = sscanf (DS, "%[^-]-%[^-]-%d %d:%d:%d", D, M, &Y, &H, &Min, &S);
    if (Gotten < 3) 
      Gotten = sscanf (DS, "%[^/]/%[^/]/%d %d:%d:%d", D, M, &Y, &H, &Min, &S);
    if (Gotten < 3)
      Gotten = sscanf (DS, "%s %[^,], %d %d:%d:%d", M, D, &Y, &H, &Min, &S);
#ifdef DEBUG
    printf ("Month = %s\nDay = %s\nYear = %d\n", M, D, Y);
    printf ("Hour = %d\nMin= %d\nSec = %d\n", H, Min, S);
#endif
    if ((Gotten < 3) || !(D && M && Y)) {
	free(M);
	free(D);
	return (1);}               /* Couldn't scan in a date */
    if (atoi(M)) {               /* Month not text, so M/D/Y not D/M/Y */
	Temp = M;
	M = D;
	D = Temp;}
    DayNum = atoi(D);
    MonthNum = MonthNo(M);
    free(M);
    free(D);
#ifdef DEBUG
    printf ("Month = %d\nDay = %d\nYear = %d\n", MonthNum, DayNum, Y);
#endif
    if ((DayNum < 1) || (DayNum > 31)) 
      return (1);                /* Bad Day */
    if (!MonthNum) 
      return (1);                /* Bad Month */
    if ((Y < 1) || (Y > 10000)) 
      return (1);                /* Bad Year */
    if (Gotten == 4) 
      return(1);                 /* Bad Time (Hour only) */
    if ((Gotten > 4) && (H < 0) || (H > 24)) 
      return(1);                 /* Bad Hour */
    if ((Gotten > 4) && ((Min < 0) || (Min > 59))) 
      return(1);                 /* Bad Minute */
    if ((Gotten > 5) && ((S < 0) || (S > 59))) 
      return(1);                 /* Bad Second */
    *Day = DayNum; 
    *Month = MonthNum;
    if (Y < 100)                   /* For abreviations like 90 for 1990    */
      Y += 1900;                   /* (Yes, it will be wrong in 2000) */
    *Year = Y;
    if (Gotten > 4) {
	*Hour = H;
	*Minute = Min;
    }
    else {
	*Hour = 0;
	*Minute = 0;}
    if (Gotten > 5) 
      *Sec = S;
    else
      *Sec = 0;
    return(0);
}


/***********************************************************/
/**  Return the Month number of a Month number or string  **/
/***********************************************************/

static int MonthNo (M)
char *M;
{
    int Count;
    if (atoi(M)) {
	if ((atoi(M) > 0) && (atoi(M) < 13))
	  return (atoi(M));
	else
	  return (0);
    }  
    for (Count = 0; Count < 12; Count++) {
	if (!strcasecmp (M, MONTHNAMES[Count]) 
	    || !strncasecmp(M, MONTHNAMES[Count], 3)) 
	  return (Count + 1);
    }
    return (0);
}
Commit	Line	Data
f852c398	1	/* $Header$
	2	*
	3	* (c) Copyright 1990 by the Massachusetts Institute of Technology.
	4	* For copying and distribution information, please see the file
	5	* <mit-copyright.h>.
	6	*/
	7
	8	#include <mit-copyright.h>
	9	#include <stdio.h>
	10	#include <sys/types.h>
	11	#include <sys/stat.h>
	12	#include <sys/time.h>
	13	#include <moira.h>
	14	#include <moira_site.h>
	15	EXEC SQL INCLUDE sqlca;
	16
	17	static char * MONTHNAMES[] = {"january", "february", "march", "april", "may",
	18	"june", "july", "august", "september",
	19	"october", "november", "december"};
	20
	21	static int MONTHDAYS[] = {0,0,31,59,90,120,151,181,212,243,273,304,334};
	22
	23
	24	/****************************************************************/
	25	/ Return the difference between the modtime & table modtime /
	26	/ in flag variable. Return 0 if success, else errno. /
	27	/****************************************************************/
	28
	29	int ModDiff (flag, tbl, ModTime)
	30	int *flag;
	31	char *tbl;
	32	time_t ModTime;
	33	{
	34	int filetimeno;
	35	EXEC SQL BEGIN DECLARE SECTION;
	36	char filetime[29], *tbl_name;
	37	EXEC SQL END DECLARE SECTION;
	38
	39	*flag = 0;
	40	tbl_name = tbl;
d78c096f	41	EXEC SQL SELECT modtime INTO :filetime FROM tblstats WHERE tbl = :tbl_name;
	42	if (sqlca.sqlcode != 0) {
	43	fprintf(stderr, "Query failed: %d\n", sqlca.sqlcode);
	44	return(MR_DATE);
	45	}
f852c398	46	if (Date2Sec (filetime, &filetimeno)) {
	47	fprintf(stderr,"Unable to parse mod. date for file %s\n", tbl);
	48	return(MR_DATE);
	49	}
	50	*flag = (filetimeno - ModTime);
	51	return(0);
	52	}
	53
	54
	55	/***************************************************/
	56	/ convert Unix-time (# of seconds since 1970) /
	57	/ from a date-time string /
	58	/ Return 1 if failure, 0 if success /
	59	/***************************************************/
	60
	61	Date2Sec(DS, UTime)
	62	char *DS;
	63	struct timeval *UTime;
	64	{
9309b3d8	65	static int defzone = -1;
f852c398	66	int Day, Month, Year, Hour, Minute, Sec, Err, TotalDays, Iter;
f852c398	67
9309b3d8	68	if (defzone == -1) {
9309b3d8	69	struct timeval tv;
16de9b7a	70	struct timezone tz;
9309b3d8	71
16de9b7a	72	if (gettimeofday(&tv, &tz))
9309b3d8	73	defzone = 0;
9309b3d8	74	else
16de9b7a	75	defzone = tz.tz_minuteswest;
9309b3d8	76	}
9309b3d8	77
d78c096f	78	#ifdef DEBUG
	79	printf("Date2Sec(\"%s\", %d.%d)\n", DS, UTime->tv_sec, UTime->tv_usec);
	80	#endif
f852c398	81	Err = ParseDateString (DS, &Day, &Month, &Year, &Hour, &Minute,&Sec);
d78c096f	82	#ifdef DEBUG
	83	printf("date=%d/%d/%d %d:%d:%d, err=%d\n", Day, Month, Year,
	84	Hour, Minute, Sec, Err);
	85	#endif
f852c398	86	if (Err) return (Err);
d78c096f	87
f852c398	88	if (Year < 1970) {
	89	for (TotalDays = 0, Iter = 1969; Iter > Year; Iter--) {
	90	TotalDays += NumdaysY(Iter);}
	91	#ifdef DEBUG
	92	printf("Days in years : %d\n", TotalDays);
	93	#endif
	94	TotalDays += (NumdaysY(Year) - NumdaysM(Month, Year) - Day);
	95	#ifdef DEBUG
	96	printf("Days after months & days: %d\n", TotalDays);
	97	#endif
	98	UTime->tv_sec = -((((24 * TotalDays) + 24 - Hour) * 60 - Minute) * 60 -
9309b3d8	99	Sec) + defzone;
f852c398	100	UTime->tv_usec = 0;
	101	return (0);
	102	} else {
	103	for (TotalDays = 0, Iter = 1970; Iter < Year; Iter++) {
	104	TotalDays += NumdaysY(Iter);}
	105	#ifdef DEBUG
	106	printf("Days in years : %d\n", TotalDays);
	107	#endif
	108	TotalDays += NumdaysM(Month, Year);
	109	#ifdef DEBUG
	110	printf("Days after months: %d\n", TotalDays);
	111	#endif
	112	TotalDays += (Day - 1);
	113	#ifdef DEBUG
	114	printf("Days after Days : %d\n", TotalDays);
	115	#endif
9309b3d8	116	UTime->tv_sec = (((24 * TotalDays) + Hour) * 60 + Minute) * 60 +
9309b3d8	117	Sec + defzone;
f852c398	118	UTime->tv_usec = 0;
	119	return (0);
	120	}
	121	}
	122
	123
	124	/*****************************************/
	125	/ Return the # of days in the Year /
	126	/*****************************************/
	127
	128	static int NumdaysY(Year)
	129	int Year;
	130	{
	131	return (365 + Leapyear(Year));
	132	}
	133
	134
	135	/*****************************************/
	136	/ Return the # of days in the Month /
	137	/*****************************************/
	138
	139	static int NumdaysM(Month, Year)
	140	int Month, Year;
	141	{
	142	if ((Month > 2) && (Leapyear (Year)))
	143	return (MONTHDAYS[Month] + 1);
	144	else
	145	return (MONTHDAYS[Month]);
	146	}
	147
	148
	149	/*****************************************/
	150	/ Return 1 if a leapyear, else 0 /
	151	/*****************************************/
	152
	153	static int Leapyear (Year)
	154	int Year;
	155	{
	156	if ((Year % 4) && (!(Year % 100) \|\| (Year % 1000)))
	157	return (0);
	158	else
	159	return (1);
	160	}
	161
	162
	163	/************************************************/
	164	/ Compute numeric breakdown of date string /
	165	/ Return 0 if success, 1 if failure /
	166	/************************************************/
	167
	168	static int ParseDateString (DS, Day, Month, Year, Hour, Minute, Sec)
	169	char *DS;
	170	int Day, Month, Year, Hour, Minute, Sec;
	171	{
	172	int Gotten;
	173	char M, D, *Temp;
	174	int Y=0, H=0, Min=0, S=0, DayNum=0, MonthNum=0;
	175
	176	M = (char *)malloc(strlen(DS));
	177	D = (char *)malloc(strlen(DS));
d78c096f	178	if (!(M && D)) return (1);
f852c398	179	Gotten = sscanf (DS, "%[^-]-%[^-]-%d %d:%d:%d", D, M, &Y, &H, &Min, &S);
	180	if (Gotten < 3)
	181	Gotten = sscanf (DS, "%[^/]/%[^/]/%d %d:%d:%d", D, M, &Y, &H, &Min, &S);
	182	if (Gotten < 3)
	183	Gotten = sscanf (DS, "%s %[^,], %d %d:%d:%d", M, D, &Y, &H, &Min, &S);
	184	#ifdef DEBUG
	185	printf ("Month = %s\nDay = %s\nYear = %d\n", M, D, Y);
	186	printf ("Hour = %d\nMin= %d\nSec = %d\n", H, Min, S);
	187	#endif
	188	if ((Gotten < 3) \|\| !(D && M && Y)) {
	189	free(M);
	190	free(D);
	191	return (1);} /* Couldn't scan in a date */
	192	if (atoi(M)) { /* Month not text, so M/D/Y not D/M/Y */
	193	Temp = M;
	194	M = D;
	195	D = Temp;}
	196	DayNum = atoi(D);
	197	MonthNum = MonthNo(M);
	198	free(M);
	199	free(D);
	200	#ifdef DEBUG
	201	printf ("Month = %d\nDay = %d\nYear = %d\n", MonthNum, DayNum, Y);
	202	#endif
	203	if ((DayNum < 1) \|\| (DayNum > 31))
	204	return (1); /* Bad Day */
	205	if (!MonthNum)
	206	return (1); /* Bad Month */
	207	if ((Y < 1) \|\| (Y > 10000))
	208	return (1); /* Bad Year */
	209	if (Gotten == 4)
	210	return(1); /* Bad Time (Hour only) */
	211	if ((Gotten > 4) && (H < 0) \|\| (H > 24))
	212	return(1); /* Bad Hour */
	213	if ((Gotten > 4) && ((Min < 0) \|\| (Min > 59)))
	214	return(1); /* Bad Minute */
	215	if ((Gotten > 5) && ((S < 0) \|\| (S > 59)))
	216	return(1); /* Bad Second */
	217	*Day = DayNum;
	218	*Month = MonthNum;
	219	if (Y < 100) /* For abreviations like 90 for 1990 */
	220	Y += 1900; /* (Yes, it will be wrong in 2000) */
	221	*Year = Y;
	222	if (Gotten > 4) {
	223	*Hour = H;
	224	*Minute = Min;
	225	}
	226	else {
	227	*Hour = 0;
	228	*Minute = 0;}
	229	if (Gotten > 5)
	230	*Sec = S;
	231	else
	232	*Sec = 0;
	233	return(0);
	234	}
	235
	236
	237	/***********************************************************/
	238	/ Return the Month number of a Month number or string /
	239	/***********************************************************/
	240
	241	static int MonthNo (M)
	242	char *M;
243	{
244	int Count;
245	if (atoi(M)) {
246	if ((atoi(M) > 0) && (atoi(M) < 13))
247	return (atoi(M));
248	else
249	return (0);
250	}
251	for (Count = 0; Count < 12; Count++) {
252	if (!strcasecmp (M, MONTHNAMES[Count])
253	\|\| !strncasecmp(M, MONTHNAMES[Count], 3))
254	return (Count + 1);
255	}
256	return (0);
257	}