Annotation of parser3/src/classes/date.C, revision 1.46
1.1 parser 1: /** @file
2: Parser: @b date parser class.
3:
1.46 ! paf 4: Copyright (c) 2001-2003 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:
1.46 ! paf 8: static const char* IDENT_DATE_C="$Date: 2003/04/11 16:05:43 $";
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
1.46 ! paf 22: Value* create_new_value() { 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:
1.28 paf 63: static int NN_year_to_NNNN(int year) {
64: if(year<70) // 0..69 -> 100..169 [2000..2069]
65: year+=100;
66: if(year>=1900)
67: year-=1900;
68: return year;
69: }
70:
1.41 paf 71: // 2002-04-25 18:14:00
72: // 18:14:00
73: // 2002:04:25 [+maybe time]
1.46 ! paf 74: time_t cstr_to_time_t(char *cstr, bool fail_on_error) { // used in image.C
1.41 paf 75: char *cur=cstr;
76: int date_delim=isdigit(cur[0])&&isdigit(cur[1])&&isdigit(cur[2])&&isdigit(cur[3])&&cur[4]==':'?':'
77: :'-';
1.46 ! paf 78: const char* year=lsplit(&cur, date_delim);
! 79: const char* month=lsplit(&cur, date_delim);
! 80: const char* mday=lsplit(&cur, ' ');
1.41 paf 81: if(!month)
82: cur=cstr;
1.46 ! paf 83: const char* hour=lsplit(&cur, ':');
! 84: const char* min=lsplit(&cur, ':');
! 85: const char* sec=cur;
1.41 paf 86:
87: tm tmIn={0};
88: tmIn.tm_isdst=-1;
89: if(!month)
90: if(min) {
91: year=mday=0; // HH:MM
92: time_t t=time(0);
93: tm *tmNow=localtime(&t);
94: tmIn.tm_year=tmNow->tm_year;
95: tmIn.tm_mon=tmNow->tm_mon;
96: tmIn.tm_mday=tmNow->tm_mday;
97: goto date_part_set;
98: } else
99: hour=min=sec=0; // not YYYY- & not HH: = just YYYY
100: tmIn.tm_year=NN_year_to_NNNN(atoi(year));
101: tmIn.tm_mon=month?atoi(month)-1:0;
102: tmIn.tm_mday=mday?atoi(mday):1;
103: date_part_set:
104: tmIn.tm_hour=hour?atoi(hour):0;
105: tmIn.tm_min=min?atoi(min):0;
106: tmIn.tm_sec=sec?atoi(sec):0;
107: time_t result=mktime(&tmIn);
108: if(result<0)
1.46 ! paf 109: if(fail_on_error)
1.41 paf 110: throw Exception(0,
1.46 ! paf 111: 0, //report_error_origin,
1.41 paf 112: "invalid datetime");
113:
114: return result;
115: }
116:
1.46 ! paf 117: static void _create(Request& r, MethodParams& params) {
! 118: VDate& vdate=GET_SELF(r, VDate);
1.1 parser 119:
1.23 paf 120: time_t t;
1.46 ! paf 121: if(params.count()==1) {
1.31 paf 122: // ^create[2002-04-25 18:14:00]
123: // ^create[18:14:00]
1.46 ! paf 124: if(const String* sdate=params[0].get_string())
! 125: t=cstr_to_time_t(sdate->cstrm(), true);
1.41 paf 126: else { // ^create(float days)
1.46 ! paf 127: t=(time_t)round(params.as_double(0, "float days must be double", r)*SECS_PER_DAY);
1.28 paf 128: if(t<0 || !localtime(&t))
129: throw Exception(0,
1.46 ! paf 130: 0,
1.28 paf 131: "invalid datetime");
132: }
1.46 ! paf 133: } else if(params.count()>=2) { // ^create(y;m;d[;h[;m[;s]]])
1.1 parser 134: tm tmIn={0};
135: tmIn.tm_isdst=-1;
1.46 ! paf 136: tmIn.tm_year=NN_year_to_NNNN(params.as_int(0, "year must be int", r));
! 137: tmIn.tm_mon=params.as_int(1, "month must be int", r)-1;
! 138: tmIn.tm_mday=params.count()>2?params.as_int(2, "mday must be int", r):1;
! 139: if(params.count()>3) tmIn.tm_hour=params.as_int(3, "hour must be int", r);
! 140: if(params.count()>4) tmIn.tm_min=params.as_int(4, "minutes must be int", r);
! 141: if(params.count()>5) tmIn.tm_sec=params.as_int(5, "seconds must be int", r);
1.23 paf 142: t=mktime(&tmIn);
143: if(t<0)
1.22 paf 144: throw Exception(0,
1.46 ! paf 145: 0,
1.1 parser 146: "invalid datetime");
147: } else
1.22 paf 148: throw Exception("parser.runtime",
1.46 ! paf 149: 0,
1.24 paf 150: "invalid params count, must be 1 or >=2");
1.46 ! paf 151: vdate.set_time(t);
1.1 parser 152: }
153:
1.46 ! paf 154: static void _sql_string(Request& r, MethodParams&) {
! 155: VDate& vdate=GET_SELF(r, VDate);
1.2 parser 156: int size=1+ 4+1+2+1+2 +1+ 2+1+2+1+2 +1 +1;
1.46 ! paf 157: char *buf=new(PointerFreeGC) char[size];
! 158: time_t time=vdate.get_time();
1.14 paf 159: size=strftime(buf, size, "%Y-%m-%d %H:%M:%S", localtime(&time));
1.1 parser 160:
1.46 ! paf 161: r.write_assign_lang(String(buf, size));
1.1 parser 162: }
163:
164:
1.46 ! paf 165: static void _roll(Request& r, MethodParams& params) {
! 166: VDate& vdate=GET_SELF(r, VDate);
1.1 parser 167:
1.46 ! paf 168: const String& what=params.as_string(0, "'what' must be string");
1.43 paf 169: int oyear=0;
170: int omonth=0;
171: int oday=0;
1.1 parser 172: int *offset;
173: if(what=="year") offset=&oyear;
174: else if(what=="month") offset=&omonth;
175: else if(what=="day") offset=&oday;
176: else
1.22 paf 177: throw Exception("parser.runtime",
1.1 parser 178: &what,
179: "must be year|month|day");
180:
1.46 ! paf 181: *offset=params.as_int(1, "offset must be int", r);
1.1 parser 182:
1.46 ! paf 183: time_t self_time=vdate.get_time();
1.13 paf 184: tm tmIn=*localtime(&self_time);
185: tm tmSaved=tmIn;
1.43 paf 186: int adjust_day=0;
187: time_t t_changed_date;
188: while(true) {
189: tmIn.tm_year+=oyear;
190: tmIn.tm_mon+=omonth;
191: tmIn.tm_mday+=oday+adjust_day;
192: tmIn.tm_hour=24/2;
193: tmIn.tm_min=0;
194: tmIn.tm_sec=0;
1.44 paf 195: int saved_mon=(tmIn.tm_mon+12*100)%12; // crossing year boundary backwards
1.43 paf 196: t_changed_date=mktime/*normalizetime*/(&tmIn);
197: if(t_changed_date<0)
198: throw Exception(0,
1.46 ! paf 199: 0,
1.43 paf 200: "bad resulting time (rolled out of valid date range)");
1.46 ! paf 201: if(oday==0 && tmIn.tm_mon!=saved_mon/*but it changed*/) {
1.43 paf 202: if(adjust_day <= -3/*31->28 max, so never, but...*/)
203: throw Exception(0,
1.46 ! paf 204: 0,
1.43 paf 205: "bad resulting time (day hole still with %d day adjustment)", adjust_day );
206:
207: tmIn=tmSaved; // restoring
208: --adjust_day; //retrying with prev day
209: } else
210: break;
211: }
1.13 paf 212:
1.43 paf 213: tm *tmOut=localtime(&t_changed_date);
1.13 paf 214: if(!tmOut)
1.22 paf 215: throw Exception(0,
1.46 ! paf 216: 0,
1.43 paf 217: "bad resulting time (seconds from epoch=%d)", t_changed_date);
1.13 paf 218:
1.43 paf 219: tmOut->tm_hour=tmSaved.tm_hour;
220: tmOut->tm_min=tmSaved.tm_min;
221: tmOut->tm_sec=tmSaved.tm_sec;
1.20 paf 222: tmOut->tm_isdst=-1;
1.13 paf 223: {
1.43 paf 224: time_t t_changed_time=mktime/*normalizetime*/(tmOut);
225: /*autofix: in msk timezone last sunday of april hour hole: [2am->3am)
1.21 paf 226: if(
227: tmOut->tm_hour!=tmSaved.tm_hour
228: ||tmOut->tm_min!=tmSaved.tm_min)
1.22 paf 229: throw Exception(0,
1.46 ! paf 230: 0,
1.24 paf 231: "bad resulting time (hour hole)");
1.43 paf 232: */
1.21 paf 233:
1.43 paf 234: if(t_changed_time<0)
1.22 paf 235: throw Exception(0,
1.46 ! paf 236: 0,
1.21 paf 237: "bad resulting time (after reconstruction)");
1.13 paf 238:
1.46 ! paf 239: vdate.set_time(t_changed_time);
1.13 paf 240: }
1.1 parser 241: }
242:
1.46 ! paf 243: static Table& fill_month_days(Request& r, MethodParams& params, bool rus){
1.45 paf 244: Table::Action_options table_options;
1.46 ! paf 245: Table& result=*new Table(date_calendar_table_template, table_options);
! 246:
! 247: int year=params.as_int(1, "year must be int", r);
! 248: int month=max(1, min(params.as_int(2, "month must be int", r), 12)) -1;
1.43 paf 249:
250: tm tmIn={0, 0, 0, 1, month, year-1900};
251: time_t t=mktime(&tmIn);
1.10 parser 252: if(t<0)
1.22 paf 253: throw Exception(0,
1.46 ! paf 254: 0,
1.10 parser 255: "invalid date");
1.43 paf 256: tm *tmOut=localtime(&t);
257:
258: int weekDay1=tmOut->tm_wday;
1.10 parser 259: if(rus)
260: weekDay1=weekDay1?weekDay1-1:6; //sunday last
1.43 paf 261: int monthDays=getMonthDays(year, month);
262:
263: for(int _day=1-weekDay1; _day<=monthDays;) {
1.46 ! paf 264: Table::element_type row(new ArrayString(7));
1.34 paf 265: // calculating year week no [1..54]
266: char *weekno_buf;
267: size_t weekno_size;
1.36 paf 268: int weekyear;
1.34 paf 269: // 0..6 week days-cells fill with month days
1.43 paf 270: for(int wday=0; wday<7; wday++, _day++) {
1.46 ! paf 271: String* cell=new String;
1.10 parser 272: if(_day>=1 && _day<=monthDays) {
1.46 ! paf 273: char *buf=new(PointerFreeGC) char[2+1];
! 274: cell->append_know_length(buf, sprintf(buf, "%02d", _day), String::L_CLEAN);
! 275: }
! 276: *row+=cell;
1.34 paf 277:
278: if(wday==(rus?3:4)/*thursday*/) {
279: tm tms={0,0,0, _day, month, year-1900};
280: /*normalize*/mktime(&tms);
281:
1.36 paf 282: weekyear=tms.tm_year+1900;
283:
1.35 paf 284: const int weekno_buf_size=2+1/*for stupid snprintfs*/ +1;
1.34 paf 285:
286: // http://www.merlyn.demon.co.uk/weekinfo.htm
287: 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 288: int n=1 + (tms.tm_yday-(FirstThurs[weekyear % 28]-3))/7;
1.46 ! paf 289: weekno_buf=new(PointerFreeGC) char[weekno_buf_size];
1.34 paf 290: weekno_size=snprintf(weekno_buf, weekno_buf_size, "%02d", n);
291: }
292:
1.10 parser 293: }
1.34 paf 294: // appending year week no
1.46 ! paf 295: *row+=new String(weekno_buf, weekno_size);
1.36 paf 296: // appending year week year
297: {
1.46 ! paf 298: char* buf=new(PointerFreeGC) char[4+1];
! 299: *row+=new String(buf, sprintf(buf, "%02d", weekyear));
1.34 paf 300: }
1.46 ! paf 301: result+=row;
! 302: }
! 303:
! 304: return result;
1.10 parser 305: }
306:
1.46 ! paf 307: static Table& fill_week_days(Request& r, MethodParams& params, bool rus){
! 308: Table::columns_type columns(new ArrayString(4));
! 309: *columns+=new String("year");
! 310: *columns+=new String("month");
! 311: *columns+=new String("day");
! 312: *columns+=new String("weekday");
! 313: Table& result=*new Table(columns);
! 314:
! 315: int year=params.as_int(1, "year must be int", r);
! 316: int month=max(1, min(params.as_int(2, "month must be int", r), 12)) -1;
! 317: int day=params.as_int(3, "day must be int", r);
! 318:
! 319: tm tmIn={0, 0, 18, day, month, year-1900};
! 320: time_t t=mktime(&tmIn);
1.10 parser 321: if(t<0)
1.22 paf 322: throw Exception(0,
1.46 ! paf 323: 0,
1.10 parser 324: "invalid date");
1.46 ! paf 325: tm *tmOut=localtime(&t);
1.10 parser 326:
1.46 ! paf 327: int baseWeekDay=tmOut->tm_wday;
1.10 parser 328: if(rus)
329: baseWeekDay=baseWeekDay?baseWeekDay-1:6; //sunday last
1.46 ! paf 330:
! 331: t-=baseWeekDay*SECS_PER_DAY;
! 332:
! 333: for(int curWeekDay=0; curWeekDay<7; curWeekDay++, t+=SECS_PER_DAY) {
! 334: tm *tmOut=localtime(&t);
! 335: Table::element_type row(new ArrayString(4));
1.10 parser 336: #define WDFILL(size, value) { \
1.46 ! paf 337: char *buf=new(PointerFreeGC) char[size+1]; \
! 338: *row+=new String(buf, sprintf(buf, "%0"#size"d", value)); \
1.10 parser 339: }
340: WDFILL(4, 1900+tmOut->tm_year);
341: WDFILL(2, 1+tmOut->tm_mon);
342: WDFILL(2, tmOut->tm_mday);
343: WDFILL(2, tmOut->tm_wday);
1.46 ! paf 344: result+=row;
! 345: }
! 346:
! 347: return result;
1.10 parser 348: }
349:
1.46 ! paf 350: static void _calendar(Request& r, MethodParams& params) {
! 351: const String& what=params.as_string(0, "format must be strig");
1.10 parser 352: bool rus=false;
353: if(what=="rus")
354: rus=true;
355: else if(what=="eng")
356: rus=false;
357: else
1.22 paf 358: throw Exception("parser.runtime",
1.10 parser 359: &what,
360: "must be rus|eng");
361:
1.46 ! paf 362: Table* table;
! 363: if(params.count()==1+2)
! 364: table=&fill_month_days(r, params, rus);
1.10 parser 365: else // 1+3
1.46 ! paf 366: table=&fill_week_days(r, params, rus);
1.10 parser 367:
1.46 ! paf 368: r.write_no_lang(*new VTable(table));
1.10 parser 369: }
370:
1.1 parser 371: // constructor
372:
1.46 ! paf 373: MDate::MDate(): Methoded("date") {
1.1 parser 374: // ^now[]
1.23 paf 375: add_native_method("now", Method::CT_DYNAMIC, _now, 0, 1);
1.1 parser 376:
1.30 paf 377: // ^create(float days)
1.17 paf 378: add_native_method("create", Method::CT_DYNAMIC, _create, 1, 6);
1.28 paf 379: // old name for compatibility with <= v1.17 2002/2/18 12:13:42 paf
1.17 paf 380: add_native_method("set", Method::CT_DYNAMIC, _create, 1, 6);
1.1 parser 381:
1.6 parser 382: // ^sql-string[]
1.5 parser 383: add_native_method("sql-string", Method::CT_DYNAMIC, _sql_string, 0, 0);
1.1 parser 384:
385: // ^roll(year|month|day;+/- 1)
386: add_native_method("roll", Method::CT_DYNAMIC, _roll, 2, 2);
1.10 parser 387:
388: // ^date:calendar[month|montheng;year;month] = table
389: // ^date:calendar[week|weekeng;year;month;day] = table
390: add_native_method("calendar", Method::CT_STATIC, _calendar, 3, 4);
1.1 parser 391:
392: }
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