Annotation of parser3/src/classes/date.C, revision 1.68
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:
1.68 ! paf 8: static const char * const IDENT_DATE_C="$Date: 2004/04/15 15:39:52 $";
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;
1.68 ! paf 82: int 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 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:
1.46 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())
1.65 paf 125: vdate.set_time(cstr_to_time_t(sdate->cstrm()));
1.41 paf 126: else { // ^create(float days)
1.65 paf 127: time_t 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");
1.65 paf 132: vdate.set_time(t);
1.28 paf 133: }
1.46 paf 134: } else if(params.count()>=2) { // ^create(y;m;d[;h[;m[;s]]])
1.56 paf 135: tm tmIn; memset(&tmIn, 0, sizeof(tmIn));
1.1 parser 136: tmIn.tm_isdst=-1;
1.61 paf 137: tmIn.tm_year=to_tm_year(params.as_int(0, "year must be int", r));
1.46 paf 138: tmIn.tm_mon=params.as_int(1, "month must be int", r)-1;
139: tmIn.tm_mday=params.count()>2?params.as_int(2, "mday must be int", r):1;
1.64 paf 140: int savedHour=0;
141: if(params.count()>3) savedHour=tmIn.tm_hour=params.as_int(3, "hour must be int", r);
1.46 paf 142: if(params.count()>4) tmIn.tm_min=params.as_int(4, "minutes must be int", r);
143: if(params.count()>5) tmIn.tm_sec=params.as_int(5, "seconds must be int", r);
1.65 paf 144: vdate.set_time(tmIn);
1.1 parser 145: } else
1.22 paf 146: throw Exception("parser.runtime",
1.46 paf 147: 0,
1.24 paf 148: "invalid params count, must be 1 or >=2");
1.1 parser 149: }
150:
1.46 paf 151: static void _sql_string(Request& r, MethodParams&) {
152: VDate& vdate=GET_SELF(r, VDate);
1.2 parser 153: int size=1+ 4+1+2+1+2 +1+ 2+1+2+1+2 +1 +1;
1.46 paf 154: char *buf=new(PointerFreeGC) char[size];
155: time_t time=vdate.get_time();
1.14 paf 156: size=strftime(buf, size, "%Y-%m-%d %H:%M:%S", localtime(&time));
1.1 parser 157:
1.46 paf 158: r.write_assign_lang(String(buf, size));
1.1 parser 159: }
160:
1.46 paf 161: static void _roll(Request& r, MethodParams& params) {
162: VDate& vdate=GET_SELF(r, VDate);
1.1 parser 163:
1.46 paf 164: const String& what=params.as_string(0, "'what' must be string");
1.43 paf 165: int oyear=0;
166: int omonth=0;
167: int oday=0;
1.1 parser 168: int *offset;
169: if(what=="year") offset=&oyear;
170: else if(what=="month") offset=&omonth;
171: else if(what=="day") offset=&oday;
1.48 paf 172: else if(what=="TZ") {
173: const String& argument_tz=params.as_string(1, "'TZ' must be string");
174: vdate.set_tz(&argument_tz);
175: return;
176: } else
1.22 paf 177: throw Exception("parser.runtime",
1.1 parser 178: &what,
1.48 paf 179: "must be year|month|day|TZ");
1.1 parser 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);
1.63 paf 225: /*autofix: in msk timezone last sunday of march 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:
1.55 paf 250: tm tmIn;
1.56 paf 251: memset(&tmIn, 0, sizeof(tmIn));
1.55 paf 252: tmIn.tm_mday=1;
253: tmIn.tm_mon=month;
1.58 paf 254: tmIn.tm_year=year-1900;
1.55 paf 255:
1.43 paf 256: time_t t=mktime(&tmIn);
1.10 parser 257: if(t<0)
1.22 paf 258: throw Exception(0,
1.46 paf 259: 0,
1.10 parser 260: "invalid date");
1.43 paf 261: tm *tmOut=localtime(&t);
262:
263: int weekDay1=tmOut->tm_wday;
1.10 parser 264: if(rus)
265: weekDay1=weekDay1?weekDay1-1:6; //sunday last
1.43 paf 266: int monthDays=getMonthDays(year, month);
267:
268: for(int _day=1-weekDay1; _day<=monthDays;) {
1.46 paf 269: Table::element_type row(new ArrayString(7));
1.34 paf 270: // calculating year week no [1..54]
1.53 paf 271: char *weekno_buf=0; // surely would be assigned to, but to calm down compiler
272: size_t weekno_size=0; // same
273: int weekyear=0; // same
1.34 paf 274: // 0..6 week days-cells fill with month days
1.43 paf 275: for(int wday=0; wday<7; wday++, _day++) {
1.46 paf 276: String* cell=new String;
1.10 parser 277: if(_day>=1 && _day<=monthDays) {
1.46 paf 278: char *buf=new(PointerFreeGC) char[2+1];
279: cell->append_know_length(buf, sprintf(buf, "%02d", _day), String::L_CLEAN);
280: }
281: *row+=cell;
1.34 paf 282:
283: if(wday==(rus?3:4)/*thursday*/) {
1.57 paf 284: tm tms;
285: memset(&tms, 0, sizeof(tmIn));
286: tms.tm_mday=_day;
287: tms.tm_mon=month;
1.58 paf 288: tms.tm_year=year-1900;
1.57 paf 289:
1.34 paf 290: /*normalize*/mktime(&tms);
291:
1.36 paf 292: weekyear=tms.tm_year+1900;
293:
1.35 paf 294: const int weekno_buf_size=2+1/*for stupid snprintfs*/ +1;
1.34 paf 295:
296: // http://www.merlyn.demon.co.uk/weekinfo.htm
297: 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 298: int n=1 + (tms.tm_yday-(FirstThurs[weekyear % 28]-3))/7;
1.46 paf 299: weekno_buf=new(PointerFreeGC) char[weekno_buf_size];
1.34 paf 300: weekno_size=snprintf(weekno_buf, weekno_buf_size, "%02d", n);
301: }
302:
1.10 parser 303: }
1.34 paf 304: // appending year week no
1.46 paf 305: *row+=new String(weekno_buf, weekno_size);
1.36 paf 306: // appending year week year
307: {
1.46 paf 308: char* buf=new(PointerFreeGC) char[4+1];
309: *row+=new String(buf, sprintf(buf, "%02d", weekyear));
1.34 paf 310: }
1.46 paf 311: result+=row;
312: }
313:
314: return result;
1.10 parser 315: }
316:
1.46 paf 317: static Table& fill_week_days(Request& r, MethodParams& params, bool rus){
318: Table::columns_type columns(new ArrayString(4));
319: *columns+=new String("year");
320: *columns+=new String("month");
321: *columns+=new String("day");
322: *columns+=new String("weekday");
323: Table& result=*new Table(columns);
324:
325: int year=params.as_int(1, "year must be int", r);
326: int month=max(1, min(params.as_int(2, "month must be int", r), 12)) -1;
327: int day=params.as_int(3, "day must be int", r);
328:
1.55 paf 329: tm tmIn;
1.56 paf 330: memset(&tmIn, 0, sizeof(tmIn));
1.55 paf 331: tmIn.tm_hour=18;
332: tmIn.tm_mday=day;
333: tmIn.tm_mon=month;
1.58 paf 334: tmIn.tm_year=year-1900;
1.55 paf 335:
1.46 paf 336: time_t t=mktime(&tmIn);
1.10 parser 337: if(t<0)
1.22 paf 338: throw Exception(0,
1.46 paf 339: 0,
1.10 parser 340: "invalid date");
1.46 paf 341: tm *tmOut=localtime(&t);
1.10 parser 342:
1.46 paf 343: int baseWeekDay=tmOut->tm_wday;
1.10 parser 344: if(rus)
345: baseWeekDay=baseWeekDay?baseWeekDay-1:6; //sunday last
1.46 paf 346:
347: t-=baseWeekDay*SECS_PER_DAY;
348:
349: for(int curWeekDay=0; curWeekDay<7; curWeekDay++, t+=SECS_PER_DAY) {
350: tm *tmOut=localtime(&t);
351: Table::element_type row(new ArrayString(4));
1.10 parser 352: #define WDFILL(size, value) { \
1.46 paf 353: char *buf=new(PointerFreeGC) char[size+1]; \
354: *row+=new String(buf, sprintf(buf, "%0"#size"d", value)); \
1.10 parser 355: }
356: WDFILL(4, 1900+tmOut->tm_year);
357: WDFILL(2, 1+tmOut->tm_mon);
358: WDFILL(2, tmOut->tm_mday);
359: WDFILL(2, tmOut->tm_wday);
1.46 paf 360: result+=row;
361: }
362:
363: return result;
1.10 parser 364: }
365:
1.46 paf 366: static void _calendar(Request& r, MethodParams& params) {
367: const String& what=params.as_string(0, "format must be strig");
1.10 parser 368: bool rus=false;
369: if(what=="rus")
370: rus=true;
371: else if(what=="eng")
372: rus=false;
373: else
1.22 paf 374: throw Exception("parser.runtime",
1.10 parser 375: &what,
376: "must be rus|eng");
377:
1.46 paf 378: Table* table;
379: if(params.count()==1+2)
380: table=&fill_month_days(r, params, rus);
1.10 parser 381: else // 1+3
1.46 paf 382: table=&fill_week_days(r, params, rus);
1.10 parser 383:
1.46 paf 384: r.write_no_lang(*new VTable(table));
1.10 parser 385: }
386:
1.49 paf 387: static void _unix_timestamp(Request& r, MethodParams& params) {
388: VDate& vdate=GET_SELF(r, VDate);
389:
390: if(params.count()==0) {
391: // ^date.unix-timestamp[]
392: r.write_no_lang(*new VInt((int)vdate.get_time()));
393: } else {
1.50 paf 394: if(vdate.get_time())
395: throw Exception(0,
396: 0,
397: "date object already constructed");
1.51 paf 398:
1.50 paf 399: // ^unix-timestamp(time_t)
400: time_t t=(time_t)params.as_int(0, "Unix timestamp must be integer", r);
1.49 paf 401:
1.50 paf 402: vdate.set_time(t);
1.49 paf 403: }
404: }
405:
406:
1.1 parser 407: // constructor
408:
1.46 paf 409: MDate::MDate(): Methoded("date") {
1.1 parser 410: // ^now[]
1.23 paf 411: add_native_method("now", Method::CT_DYNAMIC, _now, 0, 1);
1.1 parser 412:
1.30 paf 413: // ^create(float days)
1.17 paf 414: add_native_method("create", Method::CT_DYNAMIC, _create, 1, 6);
1.28 paf 415: // old name for compatibility with <= v1.17 2002/2/18 12:13:42 paf
1.17 paf 416: add_native_method("set", Method::CT_DYNAMIC, _create, 1, 6);
1.1 parser 417:
1.6 parser 418: // ^sql-string[]
1.5 parser 419: add_native_method("sql-string", Method::CT_DYNAMIC, _sql_string, 0, 0);
1.1 parser 420:
421: // ^roll(year|month|day;+/- 1)
422: add_native_method("roll", Method::CT_DYNAMIC, _roll, 2, 2);
1.10 parser 423:
424: // ^date:calendar[month|montheng;year;month] = table
425: // ^date:calendar[week|weekeng;year;month;day] = table
426: add_native_method("calendar", Method::CT_STATIC, _calendar, 3, 4);
1.1 parser 427:
1.49 paf 428:
429: // ^unix-timestamp[]
430: add_native_method("unix-timestamp", Method::CT_DYNAMIC, _unix_timestamp, 0, 1);
1.1 parser 431: }
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