[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;
{
    int Day, Month, Year, Hour, Minute, Sec, Err, TotalDays, Iter;

#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);
	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;
	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	{
	65	int Day, Month, Year, Hour, Minute, Sec, Err, TotalDays, Iter;
	66
d78c096f	67	#ifdef DEBUG
	68	printf("Date2Sec(\"%s\", %d.%d)\n", DS, UTime->tv_sec, UTime->tv_usec);
	69	#endif
f852c398	70	Err = ParseDateString (DS, &Day, &Month, &Year, &Hour, &Minute,&Sec);
d78c096f	71	#ifdef DEBUG
	72	printf("date=%d/%d/%d %d:%d:%d, err=%d\n", Day, Month, Year,
	73	Hour, Minute, Sec, Err);
	74	#endif
f852c398	75	if (Err) return (Err);
d78c096f	76
f852c398	77	if (Year < 1970) {
	78	for (TotalDays = 0, Iter = 1969; Iter > Year; Iter--) {
	79	TotalDays += NumdaysY(Iter);}
	80	#ifdef DEBUG
	81	printf("Days in years : %d\n", TotalDays);
	82	#endif
	83	TotalDays += (NumdaysY(Year) - NumdaysM(Month, Year) - Day);
	84	#ifdef DEBUG
	85	printf("Days after months & days: %d\n", TotalDays);
	86	#endif
	87	UTime->tv_sec = -((((24 * TotalDays) + 24 - Hour) * 60 - Minute) * 60 -
	88	Sec);
	89	UTime->tv_usec = 0;
	90	return (0);
	91	} else {
	92	for (TotalDays = 0, Iter = 1970; Iter < Year; Iter++) {
	93	TotalDays += NumdaysY(Iter);}
	94	#ifdef DEBUG
	95	printf("Days in years : %d\n", TotalDays);
	96	#endif
	97	TotalDays += NumdaysM(Month, Year);
	98	#ifdef DEBUG
	99	printf("Days after months: %d\n", TotalDays);
	100	#endif
	101	TotalDays += (Day - 1);
	102	#ifdef DEBUG
	103	printf("Days after Days : %d\n", TotalDays);
	104	#endif
	105	UTime->tv_sec = (((24 * TotalDays) + Hour) * 60 + Minute) * 60 + Sec;
	106	UTime->tv_usec = 0;
	107	return (0);
	108	}
	109	}
	110
	111
	112	/*****************************************/
	113	/ Return the # of days in the Year /
	114	/*****************************************/
	115
	116	static int NumdaysY(Year)
	117	int Year;
	118	{
	119	return (365 + Leapyear(Year));
	120	}
	121
	122
	123	/*****************************************/
	124	/ Return the # of days in the Month /
	125	/*****************************************/
	126
	127	static int NumdaysM(Month, Year)
	128	int Month, Year;
	129	{
	130	if ((Month > 2) && (Leapyear (Year)))
	131	return (MONTHDAYS[Month] + 1);
	132	else
	133	return (MONTHDAYS[Month]);
	134	}
	135
	136
	137	/*****************************************/
	138	/ Return 1 if a leapyear, else 0 /
	139	/*****************************************/
	140
141	static int Leapyear (Year)
142	int Year;
143	{
144	if ((Year % 4) && (!(Year % 100) \|\| (Year % 1000)))
145	return (0);
146	else
147	return (1);
148	}
149
150
151	/************************************************/
152	/ Compute numeric breakdown of date string /
153	/ Return 0 if success, 1 if failure /
154	/************************************************/
155
156	static int ParseDateString (DS, Day, Month, Year, Hour, Minute, Sec)
157	char *DS;
158	int Day, Month, Year, Hour, Minute, Sec;
159	{
160	int Gotten;
161	char M, D, *Temp;
162	int Y=0, H=0, Min=0, S=0, DayNum=0, MonthNum=0;
163
164	M = (char *)malloc(strlen(DS));
165	D = (char *)malloc(strlen(DS));
d78c096f	166	if (!(M && D)) return (1);
f852c398	167	Gotten = sscanf (DS, "%[^-]-%[^-]-%d %d:%d:%d", D, M, &Y, &H, &Min, &S);
	168	if (Gotten < 3)
	169	Gotten = sscanf (DS, "%[^/]/%[^/]/%d %d:%d:%d", D, M, &Y, &H, &Min, &S);
	170	if (Gotten < 3)
	171	Gotten = sscanf (DS, "%s %[^,], %d %d:%d:%d", M, D, &Y, &H, &Min, &S);
	172	#ifdef DEBUG
	173	printf ("Month = %s\nDay = %s\nYear = %d\n", M, D, Y);
	174	printf ("Hour = %d\nMin= %d\nSec = %d\n", H, Min, S);
	175	#endif
	176	if ((Gotten < 3) \|\| !(D && M && Y)) {
	177	free(M);
	178	free(D);
	179	return (1);} /* Couldn't scan in a date */
	180	if (atoi(M)) { /* Month not text, so M/D/Y not D/M/Y */
	181	Temp = M;
	182	M = D;
	183	D = Temp;}
	184	DayNum = atoi(D);
	185	MonthNum = MonthNo(M);
	186	free(M);
	187	free(D);
	188	#ifdef DEBUG
	189	printf ("Month = %d\nDay = %d\nYear = %d\n", MonthNum, DayNum, Y);
	190	#endif
	191	if ((DayNum < 1) \|\| (DayNum > 31))
	192	return (1); /* Bad Day */
	193	if (!MonthNum)
	194	return (1); /* Bad Month */
	195	if ((Y < 1) \|\| (Y > 10000))
	196	return (1); /* Bad Year */
	197	if (Gotten == 4)
	198	return(1); /* Bad Time (Hour only) */
	199	if ((Gotten > 4) && (H < 0) \|\| (H > 24))
	200	return(1); /* Bad Hour */
	201	if ((Gotten > 4) && ((Min < 0) \|\| (Min > 59)))
	202	return(1); /* Bad Minute */
	203	if ((Gotten > 5) && ((S < 0) \|\| (S > 59)))
	204	return(1); /* Bad Second */
	205	*Day = DayNum;
	206	*Month = MonthNum;
	207	if (Y < 100) /* For abreviations like 90 for 1990 */
	208	Y += 1900; /* (Yes, it will be wrong in 2000) */
	209	*Year = Y;
	210	if (Gotten > 4) {
	211	*Hour = H;
	212	*Minute = Min;
	213	}
	214	else {
	215	*Hour = 0;
	216	*Minute = 0;}
	217	if (Gotten > 5)
	218	*Sec = S;
	219	else
	220	*Sec = 0;
	221	return(0);
	222	}
	223
	224
	225	/***********************************************************/
	226	/ Return the Month number of a Month number or string /
	227	/***********************************************************/
	228
	229	static int MonthNo (M)
	230	char *M;
231	{
232	int Count;
233	if (atoi(M)) {
234	if ((atoi(M) > 0) && (atoi(M) < 13))
235	return (atoi(M));
236	else
237	return (0);
238	}
239	for (Count = 0; Count < 12; Count++) {
240	if (!strcasecmp (M, MONTHNAMES[Count])
241	\|\| !strncasecmp(M, MONTHNAMES[Count], 3))
242	return (Count + 1);
243	}
244	return (0);
245	}