Annotation of parser3/src/classes/date.C, revision 1.64
1.1 parser 1: /** @file
2: Parser: @b date parser class.
3:
1.62 paf 4: Copyright (c) 2001-2004 ArtLebedev Group (http://www.artlebedev.com)
1.16 paf 5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.32 paf 6: */
1.1 parser 7:
1.64 ! paf 8: static const char * const IDENT_DATE_C="$Date: 2004/02/19 15:16:53 $";
1.1 parser 9:
10: #include "classes.h"
1.46 paf 11: #include "pa_vmethod_frame.h"
12:
1.1 parser 13: #include "pa_request.h"
14: #include "pa_vdouble.h"
15: #include "pa_vdate.h"
1.10 parser 16: #include "pa_vtable.h"
1.1 parser 17:
18: // class
19:
1.46 paf 20: class MDate: public Methoded {
1.1 parser 21: public: // VStateless_class
1.53 paf 22: Value* create_new_value(Pool&) { return new VDate(0); }
1.1 parser 23:
24: public:
1.46 paf 25: MDate();
1.1 parser 26: public: // Methoded
27: bool used_directly() { return true; }
28: };
29:
1.46 paf 30: // global variable
31:
32: DECLARE_CLASS_VAR(date, new MDate, 0);
33:
34: // helpers
35:
36: class Date_calendar_table_template_columns: public ArrayString {
37: public:
38: Date_calendar_table_template_columns(): ArrayString(6+2) {
39: for(int i=0; i<=6; i++) {
40: char *cname=new(PointerFreeGC) char[1/*strlen("6")*/+1/*terminating 0*/];
41: *this+=new String(cname, sprintf(cname, "%d", i)); // .i column name
42: }
43: *this+=new String("week");
44: *this+=new String("year");
45: }
46: };
47:
48:
49: Table date_calendar_table_template(new Date_calendar_table_template_columns);
50:
1.1 parser 51: // methods
52:
1.46 paf 53: static void _now(Request& r, MethodParams& params) {
54: VDate& vdate=GET_SELF(r, VDate);
1.23 paf 55:
56: time_t t=time(0);
1.46 paf 57: if(params.count()==1) // ^now(offset)
58: t+=(time_t)round(params.as_double(0, "offset must be double", r)*SECS_PER_DAY);
1.23 paf 59:
1.46 paf 60: vdate.set_time(t);
1.1 parser 61: }
62:
1.59 paf 63: /// shrinked range: 1970/1/1 to 2038/1/1
1.61 paf 64: static int to_tm_year(int iyear) {
1.59 paf 65: if(iyear<1970 || iyear>2038)
66: throw Exception(0,
67: 0,
68: "year '%d' is out of valid range", iyear);
1.61 paf 69: return iyear-1900;
1.59 paf 70: }
71:
1.41 paf 72: // 2002-04-25 18:14:00
73: // 18:14:00
74: // 2002:04:25 [+maybe time]
1.64 ! paf 75: /*not static, used in image.C*/ time_t cstr_to_time_t(char *cstr) {
! 76: if( !cstr || !*cstr )
! 77: throw Exception(0,
! 78: 0,
! 79: "empty string is not valid datetime");
! 80:
1.41 paf 81: char *cur=cstr;
82: int date_delim=isdigit(cur[0])&&isdigit(cur[1])&&isdigit(cur[2])&&isdigit(cur[3])&&cur[4]==':'?':'
83: :'-';
1.46 paf 84: const char* year=lsplit(&cur, date_delim);
85: const char* month=lsplit(&cur, date_delim);
86: const char* mday=lsplit(&cur, ' ');
1.41 paf 87: if(!month)
88: cur=cstr;
1.46 paf 89: const char* hour=lsplit(&cur, ':');
90: const char* min=lsplit(&cur, ':');
91: const char* sec=cur;
1.41 paf 92:
1.56 paf 93: tm tmIn; memset(&tmIn, 0, sizeof(tmIn));
1.41 paf 94: tmIn.tm_isdst=-1;
95: if(!month)
96: if(min) {
97: year=mday=0; // HH:MM
98: time_t t=time(0);
99: tm *tmNow=localtime(&t);
100: tmIn.tm_year=tmNow->tm_year;
101: tmIn.tm_mon=tmNow->tm_mon;
102: tmIn.tm_mday=tmNow->tm_mday;
103: goto date_part_set;
104: } else
105: hour=min=sec=0; // not YYYY- & not HH: = just YYYY
1.61 paf 106: tmIn.tm_year=to_tm_year(pa_atoi(year));
1.60 paf 107: tmIn.tm_mon=month?pa_atoi(month)-1:0;
108: tmIn.tm_mday=mday?pa_atoi(mday):1;
1.41 paf 109: date_part_set:
1.64 ! paf 110: int savedHour=tmIn.tm_hour=hour?pa_atoi(hour):0;
1.60 paf 111: tmIn.tm_min=min?pa_atoi(min):0;
1.64 ! paf 112: tmIn.tm_sec=sec?pa_atoi(sec):0;
1.41 paf 113: time_t result=mktime(&tmIn);
1.64 ! paf 114: if(tmIn.tm_hour!=savedHour)
! 115: throw Exception(0,
! 116: 0, //report_error_origin,
! 117: "invalid datetime: spring daylightsaving hour hole");
1.41 paf 118: if(result<0)
1.64 ! paf 119: throw Exception(0,
! 120: 0, //report_error_origin,
! 121: "invalid datetime");
1.41 paf 122:
123: return result;
124: }
125:
1.46 paf 126: static void _create(Request& r, MethodParams& params) {
127: VDate& vdate=GET_SELF(r, VDate);
1.1 parser 128:
1.23 paf 129: time_t t;
1.46 paf 130: if(params.count()==1) {
1.31 paf 131: // ^create[2002-04-25 18:14:00]
132: // ^create[18:14:00]
1.46 paf 133: if(const String* sdate=params[0].get_string())
1.64 ! paf 134: t=cstr_to_time_t(sdate->cstrm());
1.41 paf 135: else { // ^create(float days)
1.46 paf 136: t=(time_t)round(params.as_double(0, "float days must be double", r)*SECS_PER_DAY);
1.28 paf 137: if(t<0 || !localtime(&t))
138: throw Exception(0,
1.46 paf 139: 0,
1.28 paf 140: "invalid datetime");
141: }
1.46 paf 142: } else if(params.count()>=2) { // ^create(y;m;d[;h[;m[;s]]])
1.56 paf 143: tm tmIn; memset(&tmIn, 0, sizeof(tmIn));
1.1 parser 144: tmIn.tm_isdst=-1;
1.61 paf 145: tmIn.tm_year=to_tm_year(params.as_int(0, "year must be int", r));
1.46 paf 146: tmIn.tm_mon=params.as_int(1, "month must be int", r)-1;
147: tmIn.tm_mday=params.count()>2?params.as_int(2, "mday must be int", r):1;
1.64 ! paf 148: int savedHour=0;
! 149: if(params.count()>3) savedHour=tmIn.tm_hour=params.as_int(3, "hour must be int", r);
1.46 paf 150: if(params.count()>4) tmIn.tm_min=params.as_int(4, "minutes must be int", r);
151: if(params.count()>5) tmIn.tm_sec=params.as_int(5, "seconds must be int", r);
1.23 paf 152: t=mktime(&tmIn);
1.64 ! paf 153: if(tmIn.tm_hour!=savedHour)
! 154: throw Exception(0,
! 155: 0, //report_error_origin,
! 156: "invalid datetime: spring daylightsaving hour hole");
1.23 paf 157: if(t<0)
1.22 paf 158: throw Exception(0,
1.46 paf 159: 0,
1.1 parser 160: "invalid datetime");
161: } else
1.22 paf 162: throw Exception("parser.runtime",
1.46 paf 163: 0,
1.24 paf 164: "invalid params count, must be 1 or >=2");
1.46 paf 165: vdate.set_time(t);
1.1 parser 166: }
167:
1.46 paf 168: static void _sql_string(Request& r, MethodParams&) {
169: VDate& vdate=GET_SELF(r, VDate);
1.2 parser 170: int size=1+ 4+1+2+1+2 +1+ 2+1+2+1+2 +1 +1;
1.46 paf 171: char *buf=new(PointerFreeGC) char[size];
172: time_t time=vdate.get_time();
1.14 paf 173: size=strftime(buf, size, "%Y-%m-%d %H:%M:%S", localtime(&time));
1.1 parser 174:
1.46 paf 175: r.write_assign_lang(String(buf, size));
1.1 parser 176: }
177:
1.46 paf 178: static void _roll(Request& r, MethodParams& params) {
179: VDate& vdate=GET_SELF(r, VDate);
1.1 parser 180:
1.46 paf 181: const String& what=params.as_string(0, "'what' must be string");
1.43 paf 182: int oyear=0;
183: int omonth=0;
184: int oday=0;
1.1 parser 185: int *offset;
186: if(what=="year") offset=&oyear;
187: else if(what=="month") offset=&omonth;
188: else if(what=="day") offset=&oday;
1.48 paf 189: else if(what=="TZ") {
190: const String& argument_tz=params.as_string(1, "'TZ' must be string");
191: vdate.set_tz(&argument_tz);
192: return;
193: } else
1.22 paf 194: throw Exception("parser.runtime",
1.1 parser 195: &what,
1.48 paf 196: "must be year|month|day|TZ");
1.1 parser 197:
1.46 paf 198: *offset=params.as_int(1, "offset must be int", r);
1.1 parser 199:
1.46 paf 200: time_t self_time=vdate.get_time();
1.13 paf 201: tm tmIn=*localtime(&self_time);
202: tm tmSaved=tmIn;
1.43 paf 203: int adjust_day=0;
204: time_t t_changed_date;
205: while(true) {
206: tmIn.tm_year+=oyear;
207: tmIn.tm_mon+=omonth;
208: tmIn.tm_mday+=oday+adjust_day;
209: tmIn.tm_hour=24/2;
210: tmIn.tm_min=0;
211: tmIn.tm_sec=0;
1.44 paf 212: int saved_mon=(tmIn.tm_mon+12*100)%12; // crossing year boundary backwards
1.43 paf 213: t_changed_date=mktime/*normalizetime*/(&tmIn);
214: if(t_changed_date<0)
215: throw Exception(0,
1.46 paf 216: 0,
1.43 paf 217: "bad resulting time (rolled out of valid date range)");
1.46 paf 218: if(oday==0 && tmIn.tm_mon!=saved_mon/*but it changed*/) {
1.43 paf 219: if(adjust_day <= -3/*31->28 max, so never, but...*/)
220: throw Exception(0,
1.46 paf 221: 0,
1.43 paf 222: "bad resulting time (day hole still with %d day adjustment)", adjust_day );
223:
224: tmIn=tmSaved; // restoring
225: --adjust_day; //retrying with prev day
226: } else
227: break;
228: }
1.13 paf 229:
1.43 paf 230: tm *tmOut=localtime(&t_changed_date);
1.13 paf 231: if(!tmOut)
1.22 paf 232: throw Exception(0,
1.46 paf 233: 0,
1.43 paf 234: "bad resulting time (seconds from epoch=%d)", t_changed_date);
1.13 paf 235:
1.43 paf 236: tmOut->tm_hour=tmSaved.tm_hour;
237: tmOut->tm_min=tmSaved.tm_min;
238: tmOut->tm_sec=tmSaved.tm_sec;
1.20 paf 239: tmOut->tm_isdst=-1;
1.13 paf 240: {
1.43 paf 241: time_t t_changed_time=mktime/*normalizetime*/(tmOut);
1.63 paf 242: /*autofix: in msk timezone last sunday of march hour hole: [2am->3am)
1.21 paf 243: if(
244: tmOut->tm_hour!=tmSaved.tm_hour
245: ||tmOut->tm_min!=tmSaved.tm_min)
1.22 paf 246: throw Exception(0,
1.46 paf 247: 0,
1.24 paf 248: "bad resulting time (hour hole)");
1.43 paf 249: */
1.21 paf 250:
1.43 paf 251: if(t_changed_time<0)
1.22 paf 252: throw Exception(0,
1.46 paf 253: 0,
1.21 paf 254: "bad resulting time (after reconstruction)");
1.13 paf 255:
1.46 paf 256: vdate.set_time(t_changed_time);
1.13 paf 257: }
1.1 parser 258: }
259:
1.46 paf 260: static Table& fill_month_days(Request& r, MethodParams& params, bool rus){
1.45 paf 261: Table::Action_options table_options;
1.46 paf 262: Table& result=*new Table(date_calendar_table_template, table_options);
263:
264: int year=params.as_int(1, "year must be int", r);
265: int month=max(1, min(params.as_int(2, "month must be int", r), 12)) -1;
1.43 paf 266:
1.55 paf 267: tm tmIn;
1.56 paf 268: memset(&tmIn, 0, sizeof(tmIn));
1.55 paf 269: tmIn.tm_mday=1;
270: tmIn.tm_mon=month;
1.58 paf 271: tmIn.tm_year=year-1900;
1.55 paf 272:
1.43 paf 273: time_t t=mktime(&tmIn);
1.10 parser 274: if(t<0)
1.22 paf 275: throw Exception(0,
1.46 paf 276: 0,
1.10 parser 277: "invalid date");
1.43 paf 278: tm *tmOut=localtime(&t);
279:
280: int weekDay1=tmOut->tm_wday;
1.10 parser 281: if(rus)
282: weekDay1=weekDay1?weekDay1-1:6; //sunday last
1.43 paf 283: int monthDays=getMonthDays(year, month);
284:
285: for(int _day=1-weekDay1; _day<=monthDays;) {
1.46 paf 286: Table::element_type row(new ArrayString(7));
1.34 paf 287: // calculating year week no [1..54]
1.53 paf 288: char *weekno_buf=0; // surely would be assigned to, but to calm down compiler
289: size_t weekno_size=0; // same
290: int weekyear=0; // same
1.34 paf 291: // 0..6 week days-cells fill with month days
1.43 paf 292: for(int wday=0; wday<7; wday++, _day++) {
1.46 paf 293: String* cell=new String;
1.10 parser 294: if(_day>=1 && _day<=monthDays) {
1.46 paf 295: char *buf=new(PointerFreeGC) char[2+1];
296: cell->append_know_length(buf, sprintf(buf, "%02d", _day), String::L_CLEAN);
297: }
298: *row+=cell;
1.34 paf 299:
300: if(wday==(rus?3:4)/*thursday*/) {
1.57 paf 301: tm tms;
302: memset(&tms, 0, sizeof(tmIn));
303: tms.tm_mday=_day;
304: tms.tm_mon=month;
1.58 paf 305: tms.tm_year=year-1900;
1.57 paf 306:
1.34 paf 307: /*normalize*/mktime(&tms);
308:
1.36 paf 309: weekyear=tms.tm_year+1900;
310:
1.35 paf 311: const int weekno_buf_size=2+1/*for stupid snprintfs*/ +1;
1.34 paf 312:
313: // http://www.merlyn.demon.co.uk/weekinfo.htm
314: const int FirstThurs[] = {7,5,4,3,2,7,6,5,4,2,1,7,6,4,3,2,1,6,5,4,3,1,7,6,5,3,2,1};
1.36 paf 315: int n=1 + (tms.tm_yday-(FirstThurs[weekyear % 28]-3))/7;
1.46 paf 316: weekno_buf=new(PointerFreeGC) char[weekno_buf_size];
1.34 paf 317: weekno_size=snprintf(weekno_buf, weekno_buf_size, "%02d", n);
318: }
319:
1.10 parser 320: }
1.34 paf 321: // appending year week no
1.46 paf 322: *row+=new String(weekno_buf, weekno_size);
1.36 paf 323: // appending year week year
324: {
1.46 paf 325: char* buf=new(PointerFreeGC) char[4+1];
326: *row+=new String(buf, sprintf(buf, "%02d", weekyear));
1.34 paf 327: }
1.46 paf 328: result+=row;
329: }
330:
331: return result;
1.10 parser 332: }
333:
1.46 paf 334: static Table& fill_week_days(Request& r, MethodParams& params, bool rus){
335: Table::columns_type columns(new ArrayString(4));
336: *columns+=new String("year");
337: *columns+=new String("month");
338: *columns+=new String("day");
339: *columns+=new String("weekday");
340: Table& result=*new Table(columns);
341:
342: int year=params.as_int(1, "year must be int", r);
343: int month=max(1, min(params.as_int(2, "month must be int", r), 12)) -1;
344: int day=params.as_int(3, "day must be int", r);
345:
1.55 paf 346: tm tmIn;
1.56 paf 347: memset(&tmIn, 0, sizeof(tmIn));
1.55 paf 348: tmIn.tm_hour=18;
349: tmIn.tm_mday=day;
350: tmIn.tm_mon=month;
1.58 paf 351: tmIn.tm_year=year-1900;
1.55 paf 352:
1.46 paf 353: time_t t=mktime(&tmIn);
1.10 parser 354: if(t<0)
1.22 paf 355: throw Exception(0,
1.46 paf 356: 0,
1.10 parser 357: "invalid date");
1.46 paf 358: tm *tmOut=localtime(&t);
1.10 parser 359:
1.46 paf 360: int baseWeekDay=tmOut->tm_wday;
1.10 parser 361: if(rus)
362: baseWeekDay=baseWeekDay?baseWeekDay-1:6; //sunday last
1.46 paf 363:
364: t-=baseWeekDay*SECS_PER_DAY;
365:
366: for(int curWeekDay=0; curWeekDay<7; curWeekDay++, t+=SECS_PER_DAY) {
367: tm *tmOut=localtime(&t);
368: Table::element_type row(new ArrayString(4));
1.10 parser 369: #define WDFILL(size, value) { \
1.46 paf 370: char *buf=new(PointerFreeGC) char[size+1]; \
371: *row+=new String(buf, sprintf(buf, "%0"#size"d", value)); \
1.10 parser 372: }
373: WDFILL(4, 1900+tmOut->tm_year);
374: WDFILL(2, 1+tmOut->tm_mon);
375: WDFILL(2, tmOut->tm_mday);
376: WDFILL(2, tmOut->tm_wday);
1.46 paf 377: result+=row;
378: }
379:
380: return result;
1.10 parser 381: }
382:
1.46 paf 383: static void _calendar(Request& r, MethodParams& params) {
384: const String& what=params.as_string(0, "format must be strig");
1.10 parser 385: bool rus=false;
386: if(what=="rus")
387: rus=true;
388: else if(what=="eng")
389: rus=false;
390: else
1.22 paf 391: throw Exception("parser.runtime",
1.10 parser 392: &what,
393: "must be rus|eng");
394:
1.46 paf 395: Table* table;
396: if(params.count()==1+2)
397: table=&fill_month_days(r, params, rus);
1.10 parser 398: else // 1+3
1.46 paf 399: table=&fill_week_days(r, params, rus);
1.10 parser 400:
1.46 paf 401: r.write_no_lang(*new VTable(table));
1.10 parser 402: }
403:
1.49 paf 404: static void _unix_timestamp(Request& r, MethodParams& params) {
405: VDate& vdate=GET_SELF(r, VDate);
406:
407: if(params.count()==0) {
408: // ^date.unix-timestamp[]
409: r.write_no_lang(*new VInt((int)vdate.get_time()));
410: } else {
1.50 paf 411: if(vdate.get_time())
412: throw Exception(0,
413: 0,
414: "date object already constructed");
1.51 paf 415:
1.50 paf 416: // ^unix-timestamp(time_t)
417: time_t t=(time_t)params.as_int(0, "Unix timestamp must be integer", r);
1.49 paf 418:
1.50 paf 419: vdate.set_time(t);
1.49 paf 420: }
421: }
422:
423:
1.1 parser 424: // constructor
425:
1.46 paf 426: MDate::MDate(): Methoded("date") {
1.1 parser 427: // ^now[]
1.23 paf 428: add_native_method("now", Method::CT_DYNAMIC, _now, 0, 1);
1.1 parser 429:
1.30 paf 430: // ^create(float days)
1.17 paf 431: add_native_method("create", Method::CT_DYNAMIC, _create, 1, 6);
1.28 paf 432: // old name for compatibility with <= v1.17 2002/2/18 12:13:42 paf
1.17 paf 433: add_native_method("set", Method::CT_DYNAMIC, _create, 1, 6);
1.1 parser 434:
1.6 parser 435: // ^sql-string[]
1.5 parser 436: add_native_method("sql-string", Method::CT_DYNAMIC, _sql_string, 0, 0);
1.1 parser 437:
438: // ^roll(year|month|day;+/- 1)
439: add_native_method("roll", Method::CT_DYNAMIC, _roll, 2, 2);
1.10 parser 440:
441: // ^date:calendar[month|montheng;year;month] = table
442: // ^date:calendar[week|weekeng;year;month;day] = table
443: add_native_method("calendar", Method::CT_STATIC, _calendar, 3, 4);
1.1 parser 444:
1.49 paf 445:
446: // ^unix-timestamp[]
447: add_native_method("unix-timestamp", Method::CT_DYNAMIC, _unix_timestamp, 0, 1);
1.1 parser 448: }
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