[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 (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;

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