Annotation of parser3/src/classes/date.C, revision 1.81
1.1 parser 1: /** @file
2: Parser: @b date parser class.
3:
1.71 paf 4: Copyright (c) 2001-2005 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:
1.81 ! misha 8: static const char * const IDENT_DATE_C="$Date: 2008-02-21 14:17:38 $";
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
1.70 paf 22: Value* create_new_value(Pool&, HashStringValue&) { 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
1.78 misha 64: static int to_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);
1.78 misha 69: return iyear;
70: }
71:
72: static int to_month(int imonth) {
73: return max(1, min(imonth, 12)) -1;
1.59 paf 74: }
75:
1.78 misha 76: static int to_tm_year(int iyear) {
77: return to_year(iyear)-1900;
78: }
79:
80:
1.41 paf 81: // 2002-04-25 18:14:00
82: // 18:14:00
83: // 2002:04:25 [+maybe time]
1.65 paf 84: /*not static, used in image.C*/ tm cstr_to_time_t(char *cstr) {
1.64 paf 85: if( !cstr || !*cstr )
86: throw Exception(0,
87: 0,
88: "empty string is not valid datetime");
89:
1.41 paf 90: char *cur=cstr;
1.73 paf 91: char date_delim=isdigit((unsigned char)cur[0])&&isdigit((unsigned char)cur[1])&&isdigit((unsigned char)cur[2])&&isdigit((unsigned char)cur[3])&&cur[4]==':'?':'
1.41 paf 92: :'-';
1.46 paf 93: const char* year=lsplit(&cur, date_delim);
94: const char* month=lsplit(&cur, date_delim);
95: const char* mday=lsplit(&cur, ' ');
1.41 paf 96: if(!month)
97: cur=cstr;
1.46 paf 98: const char* hour=lsplit(&cur, ':');
99: const char* min=lsplit(&cur, ':');
1.66 paf 100: const char* sec=lsplit(&cur, '.');
101: const char* msec=cur;
1.41 paf 102:
1.56 paf 103: tm tmIn; memset(&tmIn, 0, sizeof(tmIn));
1.41 paf 104: tmIn.tm_isdst=-1;
105: if(!month)
106: if(min) {
107: year=mday=0; // HH:MM
108: time_t t=time(0);
109: tm *tmNow=localtime(&t);
110: tmIn.tm_year=tmNow->tm_year;
111: tmIn.tm_mon=tmNow->tm_mon;
112: tmIn.tm_mday=tmNow->tm_mday;
113: goto date_part_set;
114: } else
1.66 paf 115: hour=min=sec=msec=0; // not YYYY- & not HH: = just YYYY
1.61 paf 116: tmIn.tm_year=to_tm_year(pa_atoi(year));
1.60 paf 117: tmIn.tm_mon=month?pa_atoi(month)-1:0;
118: tmIn.tm_mday=mday?pa_atoi(mday):1;
1.41 paf 119: date_part_set:
1.65 paf 120: tmIn.tm_hour=hour?pa_atoi(hour):0;
1.60 paf 121: tmIn.tm_min=min?pa_atoi(min):0;
1.64 paf 122: tmIn.tm_sec=sec?pa_atoi(sec):0;
1.66 paf 123: //tmIn.tm_[msec<<no such, waits reimplementation of the class]=f(msec);
1.65 paf 124: return tmIn;
1.41 paf 125: }
126:
1.46 paf 127: static void _create(Request& r, MethodParams& params) {
128: VDate& vdate=GET_SELF(r, VDate);
1.1 parser 129:
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())
1.65 paf 134: vdate.set_time(cstr_to_time_t(sdate->cstrm()));
1.41 paf 135: else { // ^create(float days)
1.65 paf 136: time_t 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");
1.65 paf 141: vdate.set_time(t);
1.28 paf 142: }
1.74 misha 143: } else { // ^create(y;m;d[;h[;m[;s]]])
1.75 misha 144: assert(params.count()<=6);
1.56 paf 145: tm tmIn; memset(&tmIn, 0, sizeof(tmIn));
1.1 parser 146: tmIn.tm_isdst=-1;
1.61 paf 147: tmIn.tm_year=to_tm_year(params.as_int(0, "year must be int", r));
1.46 paf 148: tmIn.tm_mon=params.as_int(1, "month must be int", r)-1;
149: tmIn.tm_mday=params.count()>2?params.as_int(2, "mday must be int", r):1;
1.64 paf 150: int savedHour=0;
151: if(params.count()>3) savedHour=tmIn.tm_hour=params.as_int(3, "hour must be int", r);
1.46 paf 152: if(params.count()>4) tmIn.tm_min=params.as_int(4, "minutes must be int", r);
153: if(params.count()>5) tmIn.tm_sec=params.as_int(5, "seconds must be int", r);
1.65 paf 154: vdate.set_time(tmIn);
1.74 misha 155: };
1.1 parser 156: }
157:
1.46 paf 158: static void _sql_string(Request& r, MethodParams&) {
159: VDate& vdate=GET_SELF(r, VDate);
1.2 parser 160: int size=1+ 4+1+2+1+2 +1+ 2+1+2+1+2 +1 +1;
1.46 paf 161: char *buf=new(PointerFreeGC) char[size];
1.72 paf 162: size=strftime(buf, size, "%Y-%m-%d %H:%M:%S", &vdate.get_localtime());
1.1 parser 163:
1.46 paf 164: r.write_assign_lang(String(buf, size));
1.1 parser 165: }
166:
1.80 misha 167: static void _gmt_string(Request& r, MethodParams&) {
168: VDate& vdate=GET_SELF(r, VDate);
169:
170: time_t when=vdate.get_time();
171:
172: r.write_assign_lang(String(date_gmt_string(gmtime(&when))));
173: }
174:
1.46 paf 175: static void _roll(Request& r, MethodParams& params) {
176: VDate& vdate=GET_SELF(r, VDate);
1.1 parser 177:
1.46 paf 178: const String& what=params.as_string(0, "'what' must be string");
1.43 paf 179: int oyear=0;
180: int omonth=0;
181: int oday=0;
1.1 parser 182: int *offset;
183: if(what=="year") offset=&oyear;
184: else if(what=="month") offset=&omonth;
185: else if(what=="day") offset=&oday;
1.48 paf 186: else if(what=="TZ") {
187: const String& argument_tz=params.as_string(1, "'TZ' must be string");
188: vdate.set_tz(&argument_tz);
189: return;
190: } else
1.77 misha 191: throw Exception(PARSER_RUNTIME,
1.1 parser 192: &what,
1.48 paf 193: "must be year|month|day|TZ");
1.1 parser 194:
1.46 paf 195: *offset=params.as_int(1, "offset must be int", r);
1.1 parser 196:
1.46 paf 197: time_t self_time=vdate.get_time();
1.13 paf 198: tm tmIn=*localtime(&self_time);
199: tm tmSaved=tmIn;
1.43 paf 200: int adjust_day=0;
201: time_t t_changed_date;
202: while(true) {
203: tmIn.tm_year+=oyear;
204: tmIn.tm_mon+=omonth;
205: tmIn.tm_mday+=oday+adjust_day;
206: tmIn.tm_hour=24/2;
207: tmIn.tm_min=0;
208: tmIn.tm_sec=0;
1.44 paf 209: int saved_mon=(tmIn.tm_mon+12*100)%12; // crossing year boundary backwards
1.43 paf 210: t_changed_date=mktime/*normalizetime*/(&tmIn);
211: if(t_changed_date<0)
212: throw Exception(0,
1.46 paf 213: 0,
1.43 paf 214: "bad resulting time (rolled out of valid date range)");
1.46 paf 215: if(oday==0 && tmIn.tm_mon!=saved_mon/*but it changed*/) {
1.43 paf 216: if(adjust_day <= -3/*31->28 max, so never, but...*/)
217: throw Exception(0,
1.46 paf 218: 0,
1.43 paf 219: "bad resulting time (day hole still with %d day adjustment)", adjust_day );
220:
221: tmIn=tmSaved; // restoring
222: --adjust_day; //retrying with prev day
223: } else
224: break;
225: }
1.13 paf 226:
1.43 paf 227: tm *tmOut=localtime(&t_changed_date);
1.13 paf 228: if(!tmOut)
1.22 paf 229: throw Exception(0,
1.46 paf 230: 0,
1.43 paf 231: "bad resulting time (seconds from epoch=%d)", t_changed_date);
1.13 paf 232:
1.43 paf 233: tmOut->tm_hour=tmSaved.tm_hour;
234: tmOut->tm_min=tmSaved.tm_min;
235: tmOut->tm_sec=tmSaved.tm_sec;
1.20 paf 236: tmOut->tm_isdst=-1;
1.13 paf 237: {
1.43 paf 238: time_t t_changed_time=mktime/*normalizetime*/(tmOut);
1.63 paf 239: /*autofix: in msk timezone last sunday of march hour hole: [2am->3am)
1.21 paf 240: if(
241: tmOut->tm_hour!=tmSaved.tm_hour
242: ||tmOut->tm_min!=tmSaved.tm_min)
1.22 paf 243: throw Exception(0,
1.46 paf 244: 0,
1.24 paf 245: "bad resulting time (hour hole)");
1.43 paf 246: */
1.21 paf 247:
1.43 paf 248: if(t_changed_time<0)
1.22 paf 249: throw Exception(0,
1.46 paf 250: 0,
1.21 paf 251: "bad resulting time (after reconstruction)");
1.13 paf 252:
1.46 paf 253: vdate.set_time(t_changed_time);
1.13 paf 254: }
1.1 parser 255: }
256:
1.46 paf 257: static Table& fill_month_days(Request& r, MethodParams& params, bool rus){
1.45 paf 258: Table::Action_options table_options;
1.46 paf 259: Table& result=*new Table(date_calendar_table_template, table_options);
260:
1.78 misha 261: int year=to_year(params.as_int(1, "year must be int", r));
262: int month=to_month(params.as_int(2, "month must be int", r));
1.43 paf 263:
1.55 paf 264: tm tmIn;
1.56 paf 265: memset(&tmIn, 0, sizeof(tmIn));
1.55 paf 266: tmIn.tm_mday=1;
267: tmIn.tm_mon=month;
1.58 paf 268: tmIn.tm_year=year-1900;
1.55 paf 269:
1.43 paf 270: time_t t=mktime(&tmIn);
1.10 parser 271: if(t<0)
1.22 paf 272: throw Exception(0,
1.46 paf 273: 0,
1.10 parser 274: "invalid date");
1.43 paf 275: tm *tmOut=localtime(&t);
276:
277: int weekDay1=tmOut->tm_wday;
1.10 parser 278: if(rus)
279: weekDay1=weekDay1?weekDay1-1:6; //sunday last
1.43 paf 280: int monthDays=getMonthDays(year, month);
281:
282: for(int _day=1-weekDay1; _day<=monthDays;) {
1.46 paf 283: Table::element_type row(new ArrayString(7));
1.34 paf 284: // calculating year week no [1..54]
1.53 paf 285: char *weekno_buf=0; // surely would be assigned to, but to calm down compiler
286: size_t weekno_size=0; // same
287: int weekyear=0; // same
1.34 paf 288: // 0..6 week days-cells fill with month days
1.43 paf 289: for(int wday=0; wday<7; wday++, _day++) {
1.46 paf 290: String* cell=new String;
1.10 parser 291: if(_day>=1 && _day<=monthDays) {
1.46 paf 292: char *buf=new(PointerFreeGC) char[2+1];
293: cell->append_know_length(buf, sprintf(buf, "%02d", _day), String::L_CLEAN);
294: }
295: *row+=cell;
1.34 paf 296:
297: if(wday==(rus?3:4)/*thursday*/) {
1.57 paf 298: tm tms;
299: memset(&tms, 0, sizeof(tmIn));
300: tms.tm_mday=_day;
301: tms.tm_mon=month;
1.58 paf 302: tms.tm_year=year-1900;
1.57 paf 303:
1.34 paf 304: /*normalize*/mktime(&tms);
1.36 paf 305: weekyear=tms.tm_year+1900;
306:
1.35 paf 307: const int weekno_buf_size=2+1/*for stupid snprintfs*/ +1;
1.34 paf 308:
1.46 paf 309: weekno_buf=new(PointerFreeGC) char[weekno_buf_size];
1.76 misha 310: VDate::yw week = VDate::CalcWeek(tms);
311: weekno_size=snprintf(weekno_buf, weekno_buf_size, "%02d", week.week);
1.34 paf 312: }
313:
1.10 parser 314: }
1.34 paf 315: // appending year week no
1.46 paf 316: *row+=new String(weekno_buf, weekno_size);
1.36 paf 317: // appending year week year
318: {
1.46 paf 319: char* buf=new(PointerFreeGC) char[4+1];
320: *row+=new String(buf, sprintf(buf, "%02d", weekyear));
1.34 paf 321: }
1.46 paf 322: result+=row;
323: }
324:
325: return result;
1.10 parser 326: }
327:
1.46 paf 328: static Table& fill_week_days(Request& r, MethodParams& params, bool rus){
329: Table::columns_type columns(new ArrayString(4));
330: *columns+=new String("year");
331: *columns+=new String("month");
332: *columns+=new String("day");
333: *columns+=new String("weekday");
334: Table& result=*new Table(columns);
335:
1.78 misha 336: int year=to_year(params.as_int(1, "year must be int", r));
337: int month=to_month(params.as_int(2, "month must be int", r));
1.46 paf 338: int day=params.as_int(3, "day must be int", r);
339:
1.55 paf 340: tm tmIn;
1.56 paf 341: memset(&tmIn, 0, sizeof(tmIn));
1.55 paf 342: tmIn.tm_hour=18;
343: tmIn.tm_mday=day;
344: tmIn.tm_mon=month;
1.58 paf 345: tmIn.tm_year=year-1900;
1.55 paf 346:
1.46 paf 347: time_t t=mktime(&tmIn);
1.10 parser 348: if(t<0)
1.22 paf 349: throw Exception(0,
1.46 paf 350: 0,
1.10 parser 351: "invalid date");
1.46 paf 352: tm *tmOut=localtime(&t);
1.10 parser 353:
1.46 paf 354: int baseWeekDay=tmOut->tm_wday;
1.10 parser 355: if(rus)
356: baseWeekDay=baseWeekDay?baseWeekDay-1:6; //sunday last
1.46 paf 357:
358: t-=baseWeekDay*SECS_PER_DAY;
359:
360: for(int curWeekDay=0; curWeekDay<7; curWeekDay++, t+=SECS_PER_DAY) {
361: tm *tmOut=localtime(&t);
362: Table::element_type row(new ArrayString(4));
1.10 parser 363: #define WDFILL(size, value) { \
1.46 paf 364: char *buf=new(PointerFreeGC) char[size+1]; \
365: *row+=new String(buf, sprintf(buf, "%0"#size"d", value)); \
1.10 parser 366: }
367: WDFILL(4, 1900+tmOut->tm_year);
368: WDFILL(2, 1+tmOut->tm_mon);
369: WDFILL(2, tmOut->tm_mday);
370: WDFILL(2, tmOut->tm_wday);
1.46 paf 371: result+=row;
372: }
373:
374: return result;
1.10 parser 375: }
376:
1.46 paf 377: static void _calendar(Request& r, MethodParams& params) {
378: const String& what=params.as_string(0, "format must be strig");
1.10 parser 379: bool rus=false;
380: if(what=="rus")
381: rus=true;
382: else if(what=="eng")
383: rus=false;
384: else
1.77 misha 385: throw Exception(PARSER_RUNTIME,
1.10 parser 386: &what,
387: "must be rus|eng");
388:
1.46 paf 389: Table* table;
390: if(params.count()==1+2)
391: table=&fill_month_days(r, params, rus);
1.10 parser 392: else // 1+3
1.46 paf 393: table=&fill_week_days(r, params, rus);
1.10 parser 394:
1.46 paf 395: r.write_no_lang(*new VTable(table));
1.10 parser 396: }
397:
1.49 paf 398: static void _unix_timestamp(Request& r, MethodParams& params) {
399: VDate& vdate=GET_SELF(r, VDate);
400:
401: if(params.count()==0) {
402: // ^date.unix-timestamp[]
403: r.write_no_lang(*new VInt((int)vdate.get_time()));
404: } else {
1.50 paf 405: if(vdate.get_time())
406: throw Exception(0,
407: 0,
408: "date object already constructed");
1.51 paf 409:
1.50 paf 410: // ^unix-timestamp(time_t)
411: time_t t=(time_t)params.as_int(0, "Unix timestamp must be integer", r);
1.49 paf 412:
1.50 paf 413: vdate.set_time(t);
1.49 paf 414: }
415: }
416:
1.79 misha 417: static void _last_day(Request& r, MethodParams& params) {
1.78 misha 418: int year;
419: int month;
420: if(&r.get_self() == date_class) {
1.81 ! misha 421: if(params.count() != 2)
1.78 misha 422: throw Exception(PARSER_RUNTIME,
423: 0,
424: "year and month must be defined");
1.81 ! misha 425:
! 426: // ^date:lastday(year;month)
! 427: year=to_year(params.as_int(0, "year must be int", r));
! 428: month=to_month(params.as_int(1, "month must be int", r));
1.78 misha 429: } else {
430: // ^date.lastday[]
431: tm &tmIn=GET_SELF(r, VDate).get_localtime();
432: year=tmIn.tm_year+1900;
433: month=tmIn.tm_mon;
434: }
1.81 ! misha 435: r.write_no_lang(*new VInt(getMonthDays(year, month)));
1.78 misha 436: }
437:
1.49 paf 438:
1.1 parser 439: // constructor
440:
1.46 paf 441: MDate::MDate(): Methoded("date") {
1.78 misha 442: // ^date::now[]
1.23 paf 443: add_native_method("now", Method::CT_DYNAMIC, _now, 0, 1);
1.1 parser 444:
1.78 misha 445: // ^date::create(float days)
1.17 paf 446: add_native_method("create", Method::CT_DYNAMIC, _create, 1, 6);
1.28 paf 447: // old name for compatibility with <= v1.17 2002/2/18 12:13:42 paf
1.17 paf 448: add_native_method("set", Method::CT_DYNAMIC, _create, 1, 6);
1.1 parser 449:
1.78 misha 450: // ^date.sql-string[]
1.5 parser 451: add_native_method("sql-string", Method::CT_DYNAMIC, _sql_string, 0, 0);
1.1 parser 452:
1.80 misha 453: // ^date.gmt-string[]
454: add_native_method("gmt-string", Method::CT_DYNAMIC, _gmt_string, 0, 0);
455:
1.78 misha 456: // ^date:lastday(year;month)
457: // ^date.lastday[]
1.79 misha 458: add_native_method("last-day", Method::CT_ANY, _last_day, 0, 2);
1.78 misha 459:
460: // ^date.roll(year|month|day;+/- 1)
1.1 parser 461: add_native_method("roll", Method::CT_DYNAMIC, _roll, 2, 2);
1.10 parser 462:
463: // ^date:calendar[month|montheng;year;month] = table
464: // ^date:calendar[week|weekeng;year;month;day] = table
465: add_native_method("calendar", Method::CT_STATIC, _calendar, 3, 4);
1.1 parser 466:
1.49 paf 467:
1.78 misha 468: // ^date.unix-timestamp[]
469: // ^date::unix-timestamp[]
1.49 paf 470: add_native_method("unix-timestamp", Method::CT_DYNAMIC, _unix_timestamp, 0, 1);
1.1 parser 471: }
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