[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;
{
    time_t filetimeno;
    EXEC SQL BEGIN DECLARE SECTION;
    char filetime[48], *tbl_name;
    EXEC SQL END DECLARE SECTION;

    *flag = 0;
    tbl_name = tbl;
    EXEC SQL SELECT modtime INTO :filetime FROM tblstats 
      WHERE table_name = :tbl_name;
    if (sqlca.sqlcode != 0) {
	if (sqlca.sqlcode == -37000 ||
	    sqlca.sqlcode == 17700)
	  exit(MR_DEADLOCK);
	fprintf(stderr, "Moddiff Query failed: %d\n", sqlca.sqlcode);
	return(MR_DATE);
    }
#ifdef DEBUG
    printf("about to call Date2Sec, flag = 0x%x\n", flag);
#endif
    if (Date2Sec (filetime, &filetimeno)) {
	fprintf(stderr,"Unable to parse mod. date for file %s\n", tbl);
	return(MR_DATE);
    }
#ifdef DEBUG
    printf("got time, flag = 0x%x\n", flag);
#endif
    *flag = (int) (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;
time_t *UTime;
{
    static int defzone = -1;
    int Day, Month, Year, Hour, Minute, Sec, Err, TotalDays, Iter;
    struct timeval tv;
    struct timezone tz;

    if (defzone == -1) {
	if (gettimeofday(&tv, &tz))
	  defzone = 0;
	else
	  defzone = tz.tz_minuteswest;
    }

#ifdef DEBUG
    printf("Date2Sec(\"%s\", %d)\n", DS, *UTime);
#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 = -((((24 * TotalDays) + 24 - Hour) * 60 - Minute) * 60 -
			  Sec) + defzone;
	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);
	printf("Calculating seconds...(UTime = 0x%x)\n", *UTime);
#endif
	*UTime = (((24 * TotalDays) + Hour) * 60 + Minute) * 60 +
			Sec + defzone;
#ifdef DEBUG
	printf("Calculated value of %d\n", *UTime);
#endif
	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) + 2);
    D = (char *)malloc(strlen(DS) + 2);
    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	{
89f6df42	34	time_t filetimeno;
f852c398	35	EXEC SQL BEGIN DECLARE SECTION;
89f6df42	36	char filetime[48], *tbl_name;
f852c398	37	EXEC SQL END DECLARE SECTION;
	38
	39	*flag = 0;
	40	tbl_name = tbl;
89f6df42	41	EXEC SQL SELECT modtime INTO :filetime FROM tblstats
89f6df42	42	WHERE table_name = :tbl_name;
d78c096f	43	if (sqlca.sqlcode != 0) {
2e1d4cdb	44	if (sqlca.sqlcode == -37000 \|\|
	45	sqlca.sqlcode == 17700)
	46	exit(MR_DEADLOCK);
	47	fprintf(stderr, "Moddiff Query failed: %d\n", sqlca.sqlcode);
d78c096f	48	return(MR_DATE);
d78c096f	49	}
89f6df42	50	#ifdef DEBUG
	51	printf("about to call Date2Sec, flag = 0x%x\n", flag);
	52	#endif
f852c398	53	if (Date2Sec (filetime, &filetimeno)) {
	54	fprintf(stderr,"Unable to parse mod. date for file %s\n", tbl);
	55	return(MR_DATE);
	56	}
89f6df42	57	#ifdef DEBUG
	58	printf("got time, flag = 0x%x\n", flag);
	59	#endif
	60	*flag = (int) (filetimeno - ModTime);
f852c398	61	return(0);
	62	}
	63
	64
	65	/***************************************************/
	66	/ convert Unix-time (# of seconds since 1970) /
	67	/ from a date-time string /
	68	/ Return 1 if failure, 0 if success /
	69	/***************************************************/
	70
	71	Date2Sec(DS, UTime)
	72	char *DS;
89f6df42	73	time_t *UTime;
f852c398	74	{
9309b3d8	75	static int defzone = -1;
f852c398	76	int Day, Month, Year, Hour, Minute, Sec, Err, TotalDays, Iter;
89f6df42	77	struct timeval tv;
89f6df42	78	struct timezone tz;
f852c398	79
9309b3d8	80	if (defzone == -1) {
16de9b7a	81	if (gettimeofday(&tv, &tz))
9309b3d8	82	defzone = 0;
9309b3d8	83	else
16de9b7a	84	defzone = tz.tz_minuteswest;
9309b3d8	85	}
9309b3d8	86
d78c096f	87	#ifdef DEBUG
89f6df42	88	printf("Date2Sec(\"%s\", %d)\n", DS, *UTime);
d78c096f	89	#endif
f852c398	90	Err = ParseDateString (DS, &Day, &Month, &Year, &Hour, &Minute,&Sec);
d78c096f	91	#ifdef DEBUG
	92	printf("date=%d/%d/%d %d:%d:%d, err=%d\n", Day, Month, Year,
	93	Hour, Minute, Sec, Err);
	94	#endif
f852c398	95	if (Err) return (Err);
d78c096f	96
f852c398	97	if (Year < 1970) {
	98	for (TotalDays = 0, Iter = 1969; Iter > Year; Iter--) {
	99	TotalDays += NumdaysY(Iter);}
	100	#ifdef DEBUG
	101	printf("Days in years : %d\n", TotalDays);
	102	#endif
	103	TotalDays += (NumdaysY(Year) - NumdaysM(Month, Year) - Day);
	104	#ifdef DEBUG
	105	printf("Days after months & days: %d\n", TotalDays);
	106	#endif
89f6df42	107	UTime = -((((24 TotalDays) + 24 - Hour) * 60 - Minute) * 60 -
9309b3d8	108	Sec) + defzone;
f852c398	109	return (0);
	110	} else {
	111	for (TotalDays = 0, Iter = 1970; Iter < Year; Iter++) {
	112	TotalDays += NumdaysY(Iter);}
	113	#ifdef DEBUG
	114	printf("Days in years : %d\n", TotalDays);
	115	#endif
	116	TotalDays += NumdaysM(Month, Year);
	117	#ifdef DEBUG
	118	printf("Days after months: %d\n", TotalDays);
	119	#endif
	120	TotalDays += (Day - 1);
	121	#ifdef DEBUG
	122	printf("Days after Days : %d\n", TotalDays);
89f6df42	123	printf("Calculating seconds...(UTime = 0x%x)\n", *UTime);
f852c398	124	#endif
89f6df42	125	UTime = (((24 TotalDays) + Hour) * 60 + Minute) * 60 +
9309b3d8	126	Sec + defzone;
89f6df42	127	#ifdef DEBUG
	128	printf("Calculated value of %d\n", *UTime);
	129	#endif
f852c398	130	return (0);
	131	}
	132	}
	133
	134
	135	/*****************************************/
	136	/ Return the # of days in the Year /
	137	/*****************************************/
	138
	139	static int NumdaysY(Year)
	140	int Year;
	141	{
	142	return (365 + Leapyear(Year));
	143	}
	144
	145
	146	/*****************************************/
	147	/ Return the # of days in the Month /
	148	/*****************************************/
	149
	150	static int NumdaysM(Month, Year)
	151	int Month, Year;
	152	{
	153	if ((Month > 2) && (Leapyear (Year)))
	154	return (MONTHDAYS[Month] + 1);
	155	else
	156	return (MONTHDAYS[Month]);
	157	}
	158
	159
	160	/*****************************************/
	161	/ Return 1 if a leapyear, else 0 /
	162	/*****************************************/
	163
	164	static int Leapyear (Year)
	165	int Year;
	166	{
	167	if ((Year % 4) && (!(Year % 100) \|\| (Year % 1000)))
	168	return (0);
	169	else
	170	return (1);
	171	}
	172
	173
	174	/************************************************/
	175	/ Compute numeric breakdown of date string /
	176	/ Return 0 if success, 1 if failure /
	177	/************************************************/
	178
	179	static int ParseDateString (DS, Day, Month, Year, Hour, Minute, Sec)
	180	char *DS;
	181	int Day, Month, Year, Hour, Minute, Sec;
	182	{
	183	int Gotten;
	184	char M, D, *Temp;
	185	int Y=0, H=0, Min=0, S=0, DayNum=0, MonthNum=0;
	186
89f6df42	187	M = (char *)malloc(strlen(DS) + 2);
89f6df42	188	D = (char *)malloc(strlen(DS) + 2);
d78c096f	189	if (!(M && D)) return (1);
f852c398	190	Gotten = sscanf (DS, "%[^-]-%[^-]-%d %d:%d:%d", D, M, &Y, &H, &Min, &S);
	191	if (Gotten < 3)
	192	Gotten = sscanf (DS, "%[^/]/%[^/]/%d %d:%d:%d", D, M, &Y, &H, &Min, &S);
	193	if (Gotten < 3)
	194	Gotten = sscanf (DS, "%s %[^,], %d %d:%d:%d", M, D, &Y, &H, &Min, &S);
	195	#ifdef DEBUG
	196	printf ("Month = %s\nDay = %s\nYear = %d\n", M, D, Y);
	197	printf ("Hour = %d\nMin= %d\nSec = %d\n", H, Min, S);
	198	#endif
	199	if ((Gotten < 3) \|\| !(D && M && Y)) {
	200	free(M);
	201	free(D);
	202	return (1);} /* Couldn't scan in a date */
	203	if (atoi(M)) { /* Month not text, so M/D/Y not D/M/Y */
	204	Temp = M;
	205	M = D;
	206	D = Temp;}
	207	DayNum = atoi(D);
	208	MonthNum = MonthNo(M);
	209	free(M);
	210	free(D);
	211	#ifdef DEBUG
	212	printf ("Month = %d\nDay = %d\nYear = %d\n", MonthNum, DayNum, Y);
	213	#endif
	214	if ((DayNum < 1) \|\| (DayNum > 31))
	215	return (1); /* Bad Day */
	216	if (!MonthNum)
	217	return (1); /* Bad Month */
	218	if ((Y < 1) \|\| (Y > 10000))
	219	return (1); /* Bad Year */
	220	if (Gotten == 4)
	221	return(1); /* Bad Time (Hour only) */
	222	if ((Gotten > 4) && (H < 0) \|\| (H > 24))
	223	return(1); /* Bad Hour */
	224	if ((Gotten > 4) && ((Min < 0) \|\| (Min > 59)))
	225	return(1); /* Bad Minute */
	226	if ((Gotten > 5) && ((S < 0) \|\| (S > 59)))
	227	return(1); /* Bad Second */
	228	*Day = DayNum;
	229	*Month = MonthNum;
	230	if (Y < 100) /* For abreviations like 90 for 1990 */
	231	Y += 1900; /* (Yes, it will be wrong in 2000) */
	232	*Year = Y;
	233	if (Gotten > 4) {
	234	*Hour = H;
	235	*Minute = Min;
	236	}
	237	else {
	238	*Hour = 0;
	239	*Minute = 0;}
	240	if (Gotten > 5)
	241	*Sec = S;
	242	else
	243	*Sec = 0;
	244	return(0);
	245	}
	246
	247
	248	/***********************************************************/
	249	/ Return the Month number of a Month number or string /
	250	/***********************************************************/
	251
	252	static int MonthNo (M)
	253	char *M;
254	{
255	int Count;
256	if (atoi(M)) {
257	if ((atoi(M) > 0) && (atoi(M) < 13))
258	return (atoi(M));
259	else
260	return (0);
261	}
262	for (Count = 0; Count < 12; Count++) {
263	if (!strcasecmp (M, MONTHNAMES[Count])
264	\|\| !strncasecmp(M, MONTHNAMES[Count], 3))
265	return (Count + 1);
266	}
267	return (0);
268	}