Annotation of parser3/src/classes/date.C, revision 1.66
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:
1.66 ! paf 8: static const char * const IDENT_DATE_C="$Date: 2004/02/19 15:38:00 $";
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]
1.65 paf 75: /*not static, used in image.C*/ tm cstr_to_time_t(char *cstr) {
1.64 paf 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, ':');
1.66 ! paf 91: const char* sec=lsplit(&cur, '.');
! 92: const char* msec=cur;
1.41 paf 93:
1.56 paf 94: tm tmIn; memset(&tmIn, 0, sizeof(tmIn));
1.41 paf 95: tmIn.tm_isdst=-1;
96: if(!month)
97: if(min) {
98: year=mday=0; // HH:MM
99: time_t t=time(0);
100: tm *tmNow=localtime(&t);
101: tmIn.tm_year=tmNow->tm_year;
102: tmIn.tm_mon=tmNow->tm_mon;
103: tmIn.tm_mday=tmNow->tm_mday;
104: goto date_part_set;
105: } else
1.66 ! paf 106: hour=min=sec=msec=0; // not YYYY- & not HH: = just YYYY
1.61 paf 107: tmIn.tm_year=to_tm_year(pa_atoi(year));
1.60 paf 108: tmIn.tm_mon=month?pa_atoi(month)-1:0;
109: tmIn.tm_mday=mday?pa_atoi(mday):1;
1.41 paf 110: date_part_set:
1.65 paf 111: tmIn.tm_hour=hour?pa_atoi(hour):0;
1.60 paf 112: tmIn.tm_min=min?pa_atoi(min):0;
1.64 paf 113: tmIn.tm_sec=sec?pa_atoi(sec):0;
1.66 ! paf 114: //tmIn.tm_[msec<<no such, waits reimplementation of the class]=f(msec);
1.65 paf 115: return tmIn;
1.41 paf 116: }
117:
1.46 paf 118: static void _create(Request& r, MethodParams& params) {
119: VDate& vdate=GET_SELF(r, VDate);
1.1 parser 120:
1.65 paf 121: tm tmIn;
1.46 paf 122: if(params.count()==1) {
1.31 paf 123: // ^create[2002-04-25 18:14:00]
124: // ^create[18:14:00]
1.46 paf 125: if(const String* sdate=params[0].get_string())
1.65 paf 126: vdate.set_time(cstr_to_time_t(sdate->cstrm()));
1.41 paf 127: else { // ^create(float days)
1.65 paf 128: time_t t=(time_t)round(params.as_double(0, "float days must be double", r)*SECS_PER_DAY);
1.28 paf 129: if(t<0 || !localtime(&t))
130: throw Exception(0,
1.46 paf 131: 0,
1.28 paf 132: "invalid datetime");
1.65 paf 133: vdate.set_time(t);
1.28 paf 134: }
1.46 paf 135: } else if(params.count()>=2) { // ^create(y;m;d[;h[;m[;s]]])
1.56 paf 136: tm tmIn; memset(&tmIn, 0, sizeof(tmIn));
1.1 parser 137: tmIn.tm_isdst=-1;
1.61 paf 138: tmIn.tm_year=to_tm_year(params.as_int(0, "year must be int", r));
1.46 paf 139: tmIn.tm_mon=params.as_int(1, "month must be int", r)-1;
140: tmIn.tm_mday=params.count()>2?params.as_int(2, "mday must be int", r):1;
1.64 paf 141: int savedHour=0;
142: if(params.count()>3) savedHour=tmIn.tm_hour=params.as_int(3, "hour must be int", r);
1.46 paf 143: if(params.count()>4) tmIn.tm_min=params.as_int(4, "minutes must be int", r);
144: if(params.count()>5) tmIn.tm_sec=params.as_int(5, "seconds must be int", r);
1.65 paf 145: vdate.set_time(tmIn);
1.1 parser 146: } else
1.22 paf 147: throw Exception("parser.runtime",
1.46 paf 148: 0,
1.24 paf 149: "invalid params count, must be 1 or >=2");
1.1 parser 150: }
151:
1.46 paf 152: static void _sql_string(Request& r, MethodParams&) {
153: VDate& vdate=GET_SELF(r, VDate);
1.2 parser 154: int size=1+ 4+1+2+1+2 +1+ 2+1+2+1+2 +1 +1;
1.46 paf 155: char *buf=new(PointerFreeGC) char[size];
156: time_t time=vdate.get_time();
1.14 paf 157: size=strftime(buf, size, "%Y-%m-%d %H:%M:%S", localtime(&time));
1.1 parser 158:
1.46 paf 159: r.write_assign_lang(String(buf, size));
1.1 parser 160: }
161:
1.46 paf 162: static void _roll(Request& r, MethodParams& params) {
163: VDate& vdate=GET_SELF(r, VDate);
1.1 parser 164:
1.46 paf 165: const String& what=params.as_string(0, "'what' must be string");
1.43 paf 166: int oyear=0;
167: int omonth=0;
168: int oday=0;
1.1 parser 169: int *offset;
170: if(what=="year") offset=&oyear;
171: else if(what=="month") offset=&omonth;
172: else if(what=="day") offset=&oday;
1.48 paf 173: else if(what=="TZ") {
174: const String& argument_tz=params.as_string(1, "'TZ' must be string");
175: vdate.set_tz(&argument_tz);
176: return;
177: } else
1.22 paf 178: throw Exception("parser.runtime",
1.1 parser 179: &what,
1.48 paf 180: "must be year|month|day|TZ");
1.1 parser 181:
1.46 paf 182: *offset=params.as_int(1, "offset must be int", r);
1.1 parser 183:
1.46 paf 184: time_t self_time=vdate.get_time();
1.13 paf 185: tm tmIn=*localtime(&self_time);
186: tm tmSaved=tmIn;
1.43 paf 187: int adjust_day=0;
188: time_t t_changed_date;
189: while(true) {
190: tmIn.tm_year+=oyear;
191: tmIn.tm_mon+=omonth;
192: tmIn.tm_mday+=oday+adjust_day;
193: tmIn.tm_hour=24/2;
194: tmIn.tm_min=0;
195: tmIn.tm_sec=0;
1.44 paf 196: int saved_mon=(tmIn.tm_mon+12*100)%12; // crossing year boundary backwards
1.43 paf 197: t_changed_date=mktime/*normalizetime*/(&tmIn);
198: if(t_changed_date<0)
199: throw Exception(0,
1.46 paf 200: 0,
1.43 paf 201: "bad resulting time (rolled out of valid date range)");
1.46 paf 202: if(oday==0 && tmIn.tm_mon!=saved_mon/*but it changed*/) {
1.43 paf 203: if(adjust_day <= -3/*31->28 max, so never, but...*/)
204: throw Exception(0,
1.46 paf 205: 0,
1.43 paf 206: "bad resulting time (day hole still with %d day adjustment)", adjust_day );
207:
208: tmIn=tmSaved; // restoring
209: --adjust_day; //retrying with prev day
210: } else
211: break;
212: }
1.13 paf 213:
1.43 paf 214: tm *tmOut=localtime(&t_changed_date);
1.13 paf 215: if(!tmOut)
1.22 paf 216: throw Exception(0,
1.46 paf 217: 0,
1.43 paf 218: "bad resulting time (seconds from epoch=%d)", t_changed_date);
1.13 paf 219:
1.43 paf 220: tmOut->tm_hour=tmSaved.tm_hour;
221: tmOut->tm_min=tmSaved.tm_min;
222: tmOut->tm_sec=tmSaved.tm_sec;
1.20 paf 223: tmOut->tm_isdst=-1;
1.13 paf 224: {
1.43 paf 225: time_t t_changed_time=mktime/*normalizetime*/(tmOut);
1.63 paf 226: /*autofix: in msk timezone last sunday of march hour hole: [2am->3am)
1.21 paf 227: if(
228: tmOut->tm_hour!=tmSaved.tm_hour
229: ||tmOut->tm_min!=tmSaved.tm_min)
1.22 paf 230: throw Exception(0,
1.46 paf 231: 0,
1.24 paf 232: "bad resulting time (hour hole)");
1.43 paf 233: */
1.21 paf 234:
1.43 paf 235: if(t_changed_time<0)
1.22 paf 236: throw Exception(0,
1.46 paf 237: 0,
1.21 paf 238: "bad resulting time (after reconstruction)");
1.13 paf 239:
1.46 paf 240: vdate.set_time(t_changed_time);
1.13 paf 241: }
1.1 parser 242: }
243:
1.46 paf 244: static Table& fill_month_days(Request& r, MethodParams& params, bool rus){
1.45 paf 245: Table::Action_options table_options;
1.46 paf 246: Table& result=*new Table(date_calendar_table_template, table_options);
247:
248: int year=params.as_int(1, "year must be int", r);
249: int month=max(1, min(params.as_int(2, "month must be int", r), 12)) -1;
1.43 paf 250:
1.55 paf 251: tm tmIn;
1.56 paf 252: memset(&tmIn, 0, sizeof(tmIn));
1.55 paf 253: tmIn.tm_mday=1;
254: tmIn.tm_mon=month;
1.58 paf 255: tmIn.tm_year=year-1900;
1.55 paf 256:
1.43 paf 257: time_t t=mktime(&tmIn);
1.10 parser 258: if(t<0)
1.22 paf 259: throw Exception(0,
1.46 paf 260: 0,
1.10 parser 261: "invalid date");
1.43 paf 262: tm *tmOut=localtime(&t);
263:
264: int weekDay1=tmOut->tm_wday;
1.10 parser 265: if(rus)
266: weekDay1=weekDay1?weekDay1-1:6; //sunday last
1.43 paf 267: int monthDays=getMonthDays(year, month);
268:
269: for(int _day=1-weekDay1; _day<=monthDays;) {
1.46 paf 270: Table::element_type row(new ArrayString(7));
1.34 paf 271: // calculating year week no [1..54]
1.53 paf 272: char *weekno_buf=0; // surely would be assigned to, but to calm down compiler
273: size_t weekno_size=0; // same
274: int weekyear=0; // same
1.34 paf 275: // 0..6 week days-cells fill with month days
1.43 paf 276: for(int wday=0; wday<7; wday++, _day++) {
1.46 paf 277: String* cell=new String;
1.10 parser 278: if(_day>=1 && _day<=monthDays) {
1.46 paf 279: char *buf=new(PointerFreeGC) char[2+1];
280: cell->append_know_length(buf, sprintf(buf, "%02d", _day), String::L_CLEAN);
281: }
282: *row+=cell;
1.34 paf 283:
284: if(wday==(rus?3:4)/*thursday*/) {
1.57 paf 285: tm tms;
286: memset(&tms, 0, sizeof(tmIn));
287: tms.tm_mday=_day;
288: tms.tm_mon=month;
1.58 paf 289: tms.tm_year=year-1900;
1.57 paf 290:
1.34 paf 291: /*normalize*/mktime(&tms);
292:
1.36 paf 293: weekyear=tms.tm_year+1900;
294:
1.35 paf 295: const int weekno_buf_size=2+1/*for stupid snprintfs*/ +1;
1.34 paf 296:
297: // http://www.merlyn.demon.co.uk/weekinfo.htm
298: 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 299: int n=1 + (tms.tm_yday-(FirstThurs[weekyear % 28]-3))/7;
1.46 paf 300: weekno_buf=new(PointerFreeGC) char[weekno_buf_size];
1.34 paf 301: weekno_size=snprintf(weekno_buf, weekno_buf_size, "%02d", n);
302: }
303:
1.10 parser 304: }
1.34 paf 305: // appending year week no
1.46 paf 306: *row+=new String(weekno_buf, weekno_size);
1.36 paf 307: // appending year week year
308: {
1.46 paf 309: char* buf=new(PointerFreeGC) char[4+1];
310: *row+=new String(buf, sprintf(buf, "%02d", weekyear));
1.34 paf 311: }
1.46 paf 312: result+=row;
313: }
314:
315: return result;
1.10 parser 316: }
317:
1.46 paf 318: static Table& fill_week_days(Request& r, MethodParams& params, bool rus){
319: Table::columns_type columns(new ArrayString(4));
320: *columns+=new String("year");
321: *columns+=new String("month");
322: *columns+=new String("day");
323: *columns+=new String("weekday");
324: Table& result=*new Table(columns);
325:
326: int year=params.as_int(1, "year must be int", r);
327: int month=max(1, min(params.as_int(2, "month must be int", r), 12)) -1;
328: int day=params.as_int(3, "day must be int", r);
329:
1.55 paf 330: tm tmIn;
1.56 paf 331: memset(&tmIn, 0, sizeof(tmIn));
1.55 paf 332: tmIn.tm_hour=18;
333: tmIn.tm_mday=day;
334: tmIn.tm_mon=month;
1.58 paf 335: tmIn.tm_year=year-1900;
1.55 paf 336:
1.46 paf 337: time_t t=mktime(&tmIn);
1.10 parser 338: if(t<0)
1.22 paf 339: throw Exception(0,
1.46 paf 340: 0,
1.10 parser 341: "invalid date");
1.46 paf 342: tm *tmOut=localtime(&t);
1.10 parser 343:
1.46 paf 344: int baseWeekDay=tmOut->tm_wday;
1.10 parser 345: if(rus)
346: baseWeekDay=baseWeekDay?baseWeekDay-1:6; //sunday last
1.46 paf 347:
348: t-=baseWeekDay*SECS_PER_DAY;
349:
350: for(int curWeekDay=0; curWeekDay<7; curWeekDay++, t+=SECS_PER_DAY) {
351: tm *tmOut=localtime(&t);
352: Table::element_type row(new ArrayString(4));
1.10 parser 353: #define WDFILL(size, value) { \
1.46 paf 354: char *buf=new(PointerFreeGC) char[size+1]; \
355: *row+=new String(buf, sprintf(buf, "%0"#size"d", value)); \
1.10 parser 356: }
357: WDFILL(4, 1900+tmOut->tm_year);
358: WDFILL(2, 1+tmOut->tm_mon);
359: WDFILL(2, tmOut->tm_mday);
360: WDFILL(2, tmOut->tm_wday);
1.46 paf 361: result+=row;
362: }
363:
364: return result;
1.10 parser 365: }
366:
1.46 paf 367: static void _calendar(Request& r, MethodParams& params) {
368: const String& what=params.as_string(0, "format must be strig");
1.10 parser 369: bool rus=false;
370: if(what=="rus")
371: rus=true;
372: else if(what=="eng")
373: rus=false;
374: else
1.22 paf 375: throw Exception("parser.runtime",
1.10 parser 376: &what,
377: "must be rus|eng");
378:
1.46 paf 379: Table* table;
380: if(params.count()==1+2)
381: table=&fill_month_days(r, params, rus);
1.10 parser 382: else // 1+3
1.46 paf 383: table=&fill_week_days(r, params, rus);
1.10 parser 384:
1.46 paf 385: r.write_no_lang(*new VTable(table));
1.10 parser 386: }
387:
1.49 paf 388: static void _unix_timestamp(Request& r, MethodParams& params) {
389: VDate& vdate=GET_SELF(r, VDate);
390:
391: if(params.count()==0) {
392: // ^date.unix-timestamp[]
393: r.write_no_lang(*new VInt((int)vdate.get_time()));
394: } else {
1.50 paf 395: if(vdate.get_time())
396: throw Exception(0,
397: 0,
398: "date object already constructed");
1.51 paf 399:
1.50 paf 400: // ^unix-timestamp(time_t)
401: time_t t=(time_t)params.as_int(0, "Unix timestamp must be integer", r);
1.49 paf 402:
1.50 paf 403: vdate.set_time(t);
1.49 paf 404: }
405: }
406:
407:
1.1 parser 408: // constructor
409:
1.46 paf 410: MDate::MDate(): Methoded("date") {
1.1 parser 411: // ^now[]
1.23 paf 412: add_native_method("now", Method::CT_DYNAMIC, _now, 0, 1);
1.1 parser 413:
1.30 paf 414: // ^create(float days)
1.17 paf 415: add_native_method("create", Method::CT_DYNAMIC, _create, 1, 6);
1.28 paf 416: // old name for compatibility with <= v1.17 2002/2/18 12:13:42 paf
1.17 paf 417: add_native_method("set", Method::CT_DYNAMIC, _create, 1, 6);
1.1 parser 418:
1.6 parser 419: // ^sql-string[]
1.5 parser 420: add_native_method("sql-string", Method::CT_DYNAMIC, _sql_string, 0, 0);
1.1 parser 421:
422: // ^roll(year|month|day;+/- 1)
423: add_native_method("roll", Method::CT_DYNAMIC, _roll, 2, 2);
1.10 parser 424:
425: // ^date:calendar[month|montheng;year;month] = table
426: // ^date:calendar[week|weekeng;year;month;day] = table
427: add_native_method("calendar", Method::CT_STATIC, _calendar, 3, 4);
1.1 parser 428:
1.49 paf 429:
430: // ^unix-timestamp[]
431: add_native_method("unix-timestamp", Method::CT_DYNAMIC, _unix_timestamp, 0, 1);
1.1 parser 432: }
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