Annotation of parser3/src/classes/date.C, revision 1.51
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:
1.51 ! paf 8: static const char* IDENT_DATE_C="$Date: 2003/11/03 11:10:28 $";
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]
1.47 paf 74: /*not static, used in image.C*/ time_t cstr_to_time_t(char *cstr, bool fail_on_error) {
75: if( !cstr || !*cstr ) {
76: if(fail_on_error)
77: throw Exception(0,
78: 0,
79: "empty string is not valid datetime");
80: return 0;
81: }
1.41 paf 82: char *cur=cstr;
83: int date_delim=isdigit(cur[0])&&isdigit(cur[1])&&isdigit(cur[2])&&isdigit(cur[3])&&cur[4]==':'?':'
84: :'-';
1.46 paf 85: const char* year=lsplit(&cur, date_delim);
86: const char* month=lsplit(&cur, date_delim);
87: const char* mday=lsplit(&cur, ' ');
1.41 paf 88: if(!month)
89: cur=cstr;
1.46 paf 90: const char* hour=lsplit(&cur, ':');
91: const char* min=lsplit(&cur, ':');
92: const char* sec=cur;
1.41 paf 93:
94: tm tmIn={0};
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
106: hour=min=sec=0; // not YYYY- & not HH: = just YYYY
107: tmIn.tm_year=NN_year_to_NNNN(atoi(year));
108: tmIn.tm_mon=month?atoi(month)-1:0;
109: tmIn.tm_mday=mday?atoi(mday):1;
110: date_part_set:
111: tmIn.tm_hour=hour?atoi(hour):0;
112: tmIn.tm_min=min?atoi(min):0;
113: tmIn.tm_sec=sec?atoi(sec):0;
114: time_t result=mktime(&tmIn);
115: if(result<0)
1.46 paf 116: if(fail_on_error)
1.41 paf 117: throw Exception(0,
1.46 paf 118: 0, //report_error_origin,
1.41 paf 119: "invalid datetime");
120:
121: return result;
122: }
123:
1.46 paf 124: static void _create(Request& r, MethodParams& params) {
125: VDate& vdate=GET_SELF(r, VDate);
1.1 parser 126:
1.23 paf 127: time_t t;
1.46 paf 128: if(params.count()==1) {
1.31 paf 129: // ^create[2002-04-25 18:14:00]
130: // ^create[18:14:00]
1.46 paf 131: if(const String* sdate=params[0].get_string())
132: t=cstr_to_time_t(sdate->cstrm(), true);
1.41 paf 133: else { // ^create(float days)
1.46 paf 134: t=(time_t)round(params.as_double(0, "float days must be double", r)*SECS_PER_DAY);
1.28 paf 135: if(t<0 || !localtime(&t))
136: throw Exception(0,
1.46 paf 137: 0,
1.28 paf 138: "invalid datetime");
139: }
1.46 paf 140: } else if(params.count()>=2) { // ^create(y;m;d[;h[;m[;s]]])
1.1 parser 141: tm tmIn={0};
142: tmIn.tm_isdst=-1;
1.46 paf 143: tmIn.tm_year=NN_year_to_NNNN(params.as_int(0, "year must be int", r));
144: tmIn.tm_mon=params.as_int(1, "month must be int", r)-1;
145: tmIn.tm_mday=params.count()>2?params.as_int(2, "mday must be int", r):1;
146: if(params.count()>3) tmIn.tm_hour=params.as_int(3, "hour must be int", r);
147: if(params.count()>4) tmIn.tm_min=params.as_int(4, "minutes must be int", r);
148: if(params.count()>5) tmIn.tm_sec=params.as_int(5, "seconds must be int", r);
1.23 paf 149: t=mktime(&tmIn);
150: if(t<0)
1.22 paf 151: throw Exception(0,
1.46 paf 152: 0,
1.1 parser 153: "invalid datetime");
154: } else
1.22 paf 155: throw Exception("parser.runtime",
1.46 paf 156: 0,
1.24 paf 157: "invalid params count, must be 1 or >=2");
1.46 paf 158: vdate.set_time(t);
1.1 parser 159: }
160:
1.46 paf 161: static void _sql_string(Request& r, MethodParams&) {
162: VDate& vdate=GET_SELF(r, VDate);
1.2 parser 163: int size=1+ 4+1+2+1+2 +1+ 2+1+2+1+2 +1 +1;
1.46 paf 164: char *buf=new(PointerFreeGC) char[size];
165: time_t time=vdate.get_time();
1.14 paf 166: size=strftime(buf, size, "%Y-%m-%d %H:%M:%S", localtime(&time));
1.1 parser 167:
1.46 paf 168: r.write_assign_lang(String(buf, size));
1.1 parser 169: }
170:
1.46 paf 171: static void _roll(Request& r, MethodParams& params) {
172: VDate& vdate=GET_SELF(r, VDate);
1.1 parser 173:
1.46 paf 174: const String& what=params.as_string(0, "'what' must be string");
1.43 paf 175: int oyear=0;
176: int omonth=0;
177: int oday=0;
1.1 parser 178: int *offset;
179: if(what=="year") offset=&oyear;
180: else if(what=="month") offset=&omonth;
181: else if(what=="day") offset=&oday;
1.48 paf 182: else if(what=="TZ") {
183: const String& argument_tz=params.as_string(1, "'TZ' must be string");
184: vdate.set_tz(&argument_tz);
185: return;
186: } else
1.22 paf 187: throw Exception("parser.runtime",
1.1 parser 188: &what,
1.48 paf 189: "must be year|month|day|TZ");
1.1 parser 190:
1.46 paf 191: *offset=params.as_int(1, "offset must be int", r);
1.1 parser 192:
1.46 paf 193: time_t self_time=vdate.get_time();
1.13 paf 194: tm tmIn=*localtime(&self_time);
195: tm tmSaved=tmIn;
1.43 paf 196: int adjust_day=0;
197: time_t t_changed_date;
198: while(true) {
199: tmIn.tm_year+=oyear;
200: tmIn.tm_mon+=omonth;
201: tmIn.tm_mday+=oday+adjust_day;
202: tmIn.tm_hour=24/2;
203: tmIn.tm_min=0;
204: tmIn.tm_sec=0;
1.44 paf 205: int saved_mon=(tmIn.tm_mon+12*100)%12; // crossing year boundary backwards
1.43 paf 206: t_changed_date=mktime/*normalizetime*/(&tmIn);
207: if(t_changed_date<0)
208: throw Exception(0,
1.46 paf 209: 0,
1.43 paf 210: "bad resulting time (rolled out of valid date range)");
1.46 paf 211: if(oday==0 && tmIn.tm_mon!=saved_mon/*but it changed*/) {
1.43 paf 212: if(adjust_day <= -3/*31->28 max, so never, but...*/)
213: throw Exception(0,
1.46 paf 214: 0,
1.43 paf 215: "bad resulting time (day hole still with %d day adjustment)", adjust_day );
216:
217: tmIn=tmSaved; // restoring
218: --adjust_day; //retrying with prev day
219: } else
220: break;
221: }
1.13 paf 222:
1.43 paf 223: tm *tmOut=localtime(&t_changed_date);
1.13 paf 224: if(!tmOut)
1.22 paf 225: throw Exception(0,
1.46 paf 226: 0,
1.43 paf 227: "bad resulting time (seconds from epoch=%d)", t_changed_date);
1.13 paf 228:
1.43 paf 229: tmOut->tm_hour=tmSaved.tm_hour;
230: tmOut->tm_min=tmSaved.tm_min;
231: tmOut->tm_sec=tmSaved.tm_sec;
1.20 paf 232: tmOut->tm_isdst=-1;
1.13 paf 233: {
1.43 paf 234: time_t t_changed_time=mktime/*normalizetime*/(tmOut);
235: /*autofix: in msk timezone last sunday of april hour hole: [2am->3am)
1.21 paf 236: if(
237: tmOut->tm_hour!=tmSaved.tm_hour
238: ||tmOut->tm_min!=tmSaved.tm_min)
1.22 paf 239: throw Exception(0,
1.46 paf 240: 0,
1.24 paf 241: "bad resulting time (hour hole)");
1.43 paf 242: */
1.21 paf 243:
1.43 paf 244: if(t_changed_time<0)
1.22 paf 245: throw Exception(0,
1.46 paf 246: 0,
1.21 paf 247: "bad resulting time (after reconstruction)");
1.13 paf 248:
1.46 paf 249: vdate.set_time(t_changed_time);
1.13 paf 250: }
1.1 parser 251: }
252:
1.46 paf 253: static Table& fill_month_days(Request& r, MethodParams& params, bool rus){
1.45 paf 254: Table::Action_options table_options;
1.46 paf 255: Table& result=*new Table(date_calendar_table_template, table_options);
256:
257: int year=params.as_int(1, "year must be int", r);
258: int month=max(1, min(params.as_int(2, "month must be int", r), 12)) -1;
1.43 paf 259:
260: tm tmIn={0, 0, 0, 1, month, year-1900};
261: time_t t=mktime(&tmIn);
1.10 parser 262: if(t<0)
1.22 paf 263: throw Exception(0,
1.46 paf 264: 0,
1.10 parser 265: "invalid date");
1.43 paf 266: tm *tmOut=localtime(&t);
267:
268: int weekDay1=tmOut->tm_wday;
1.10 parser 269: if(rus)
270: weekDay1=weekDay1?weekDay1-1:6; //sunday last
1.43 paf 271: int monthDays=getMonthDays(year, month);
272:
273: for(int _day=1-weekDay1; _day<=monthDays;) {
1.46 paf 274: Table::element_type row(new ArrayString(7));
1.34 paf 275: // calculating year week no [1..54]
276: char *weekno_buf;
277: size_t weekno_size;
1.36 paf 278: int weekyear;
1.34 paf 279: // 0..6 week days-cells fill with month days
1.43 paf 280: for(int wday=0; wday<7; wday++, _day++) {
1.46 paf 281: String* cell=new String;
1.10 parser 282: if(_day>=1 && _day<=monthDays) {
1.46 paf 283: char *buf=new(PointerFreeGC) char[2+1];
284: cell->append_know_length(buf, sprintf(buf, "%02d", _day), String::L_CLEAN);
285: }
286: *row+=cell;
1.34 paf 287:
288: if(wday==(rus?3:4)/*thursday*/) {
289: tm tms={0,0,0, _day, month, year-1900};
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:
329: tm tmIn={0, 0, 18, day, month, year-1900};
330: time_t t=mktime(&tmIn);
1.10 parser 331: if(t<0)
1.22 paf 332: throw Exception(0,
1.46 paf 333: 0,
1.10 parser 334: "invalid date");
1.46 paf 335: tm *tmOut=localtime(&t);
1.10 parser 336:
1.46 paf 337: int baseWeekDay=tmOut->tm_wday;
1.10 parser 338: if(rus)
339: baseWeekDay=baseWeekDay?baseWeekDay-1:6; //sunday last
1.46 paf 340:
341: t-=baseWeekDay*SECS_PER_DAY;
342:
343: for(int curWeekDay=0; curWeekDay<7; curWeekDay++, t+=SECS_PER_DAY) {
344: tm *tmOut=localtime(&t);
345: Table::element_type row(new ArrayString(4));
1.10 parser 346: #define WDFILL(size, value) { \
1.46 paf 347: char *buf=new(PointerFreeGC) char[size+1]; \
348: *row+=new String(buf, sprintf(buf, "%0"#size"d", value)); \
1.10 parser 349: }
350: WDFILL(4, 1900+tmOut->tm_year);
351: WDFILL(2, 1+tmOut->tm_mon);
352: WDFILL(2, tmOut->tm_mday);
353: WDFILL(2, tmOut->tm_wday);
1.46 paf 354: result+=row;
355: }
356:
357: return result;
1.10 parser 358: }
359:
1.46 paf 360: static void _calendar(Request& r, MethodParams& params) {
361: const String& what=params.as_string(0, "format must be strig");
1.10 parser 362: bool rus=false;
363: if(what=="rus")
364: rus=true;
365: else if(what=="eng")
366: rus=false;
367: else
1.22 paf 368: throw Exception("parser.runtime",
1.10 parser 369: &what,
370: "must be rus|eng");
371:
1.46 paf 372: Table* table;
373: if(params.count()==1+2)
374: table=&fill_month_days(r, params, rus);
1.10 parser 375: else // 1+3
1.46 paf 376: table=&fill_week_days(r, params, rus);
1.10 parser 377:
1.46 paf 378: r.write_no_lang(*new VTable(table));
1.10 parser 379: }
380:
1.49 paf 381: static void _unix_timestamp(Request& r, MethodParams& params) {
382: VDate& vdate=GET_SELF(r, VDate);
383:
384: if(params.count()==0) {
385: // ^date.unix-timestamp[]
386: r.write_no_lang(*new VInt((int)vdate.get_time()));
387: } else {
1.50 paf 388: if(vdate.get_time())
389: throw Exception(0,
390: 0,
391: "date object already constructed");
1.51 ! paf 392:
1.50 paf 393: // ^unix-timestamp(time_t)
394: time_t t=(time_t)params.as_int(0, "Unix timestamp must be integer", r);
1.49 paf 395:
1.50 paf 396: vdate.set_time(t);
1.49 paf 397: }
398: }
399:
400:
1.1 parser 401: // constructor
402:
1.46 paf 403: MDate::MDate(): Methoded("date") {
1.1 parser 404: // ^now[]
1.23 paf 405: add_native_method("now", Method::CT_DYNAMIC, _now, 0, 1);
1.1 parser 406:
1.30 paf 407: // ^create(float days)
1.17 paf 408: add_native_method("create", Method::CT_DYNAMIC, _create, 1, 6);
1.28 paf 409: // old name for compatibility with <= v1.17 2002/2/18 12:13:42 paf
1.17 paf 410: add_native_method("set", Method::CT_DYNAMIC, _create, 1, 6);
1.1 parser 411:
1.6 parser 412: // ^sql-string[]
1.5 parser 413: add_native_method("sql-string", Method::CT_DYNAMIC, _sql_string, 0, 0);
1.1 parser 414:
415: // ^roll(year|month|day;+/- 1)
416: add_native_method("roll", Method::CT_DYNAMIC, _roll, 2, 2);
1.10 parser 417:
418: // ^date:calendar[month|montheng;year;month] = table
419: // ^date:calendar[week|weekeng;year;month;day] = table
420: add_native_method("calendar", Method::CT_STATIC, _calendar, 3, 4);
1.1 parser 421:
1.49 paf 422:
423: // ^unix-timestamp[]
424: add_native_method("unix-timestamp", Method::CT_DYNAMIC, _unix_timestamp, 0, 1);
1.1 parser 425: }
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