Annotation of parser3/src/classes/date.C, revision 1.42.2.11.2.12
1.1 parser 1: /** @file
2: Parser: @b date parser class.
3:
1.42.2.3 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:
1.42.2.11.2.1 (paf 8:): static const char* IDENT_DATE_C="$Date: 2003/04/08 12:47:29 $";
1.1 parser 9:
10: #include "classes.h"
1.42.2.5 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:
1.42.2.9 paf 20: class MDate: public Methoded {
1.1 parser 21: public: // VStateless_class
1.42.2.11.2.5 (paf 22:: Value* create_new_value() { return new VDate(0); }
1.1 parser 23:
24: public:
1.42.2.6 paf 25: MDate();
1.1 parser 26: public: // Methoded
27: bool used_directly() { return true; }
28: };
1.42.2.1 paf 29:
1.42.2.6 paf 30: // global variable
31:
1.42.2.11 paf 32: DECLARE_CLASS_VAR(date, new MDate, 0);
1.42.2.6 paf 33:
1.42.2.1 paf 34: // helpers
35:
1.42.2.7 paf 36: class Date_calendar_table_template_columns: public ArrayString {
1.42.2.6 paf 37: public:
1.42.2.7 paf 38: Date_calendar_table_template_columns(): ArrayString(6+2) {
1.42.2.1 paf 39: for(int i=0; i<=6; i++) {
1.42.2.11.2.6 (paf 40:: char *cname=new(PointerFreeGC) char[1/*strlen("6")*/+1/*terminating 0*/];
1.42.2.11.2.5 (paf 41:: *this+=new String(cname, sprintf(cname, "%d", i)); // .i column name
1.42.2.1 paf 42: }
1.42.2.11.2.5 (paf 43:: *this+=new String("week");
44:: *this+=new String("year");
1.42.2.1 paf 45: }
1.42.2.6 paf 46: };
47:
48:
1.42.2.11.2.5 (paf 49:: Table date_calendar_table_template(new Date_calendar_table_template_columns);
1.1 parser 50:
51: // methods
52:
1.42.2.11.2.9 (paf 53:: static void _now(Request& r, MethodParams& params) {
1.42.2.6 paf 54: VDate& vdate=GET_SELF(r, VDate);
1.23 paf 55:
56: time_t t=time(0);
1.42.2.11.2.9 (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:
1.42.2.6 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]
1.42.2.11.2.5 (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: :'-';
1.42.2.3 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;
1.42.2.3 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)
1.42.2.11.2.5 (paf 109:: if(fail_on_error)
1.41 paf 110: throw Exception(0,
1.42.2.11.2.5 (paf 111:: 0, //report_error_origin,
1.41 paf 112: "invalid datetime");
113:
114: return result;
115: }
116:
1.42.2.11.2.9 (paf 117:: static void _create(Request& r, MethodParams& params) {
1.42.2.6 paf 118: VDate& vdate=GET_SELF(r, VDate);
1.1 parser 119:
1.23 paf 120: time_t t;
1.42.2.11.2.9 (paf 121:: if(params.count()==1) {
1.31 paf 122: // ^create[2002-04-25 18:14:00]
123: // ^create[18:14:00]
1.42.2.11.2.1 (paf 124:): if(const String* sdate=params[0].get_string())
1.42.2.11.2.5 (paf 125:: t=cstr_to_time_t(sdate->cstrm(), true);
1.41 paf 126: else { // ^create(float days)
1.42.2.11.2.9 (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,
1.42.2.11.2.5 (paf 130:: 0,
1.28 paf 131: "invalid datetime");
132: }
1.42.2.11.2.9 (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;
1.42.2.11.2.9 (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,
1.42.2.11.2.5 (paf 145:: 0,
1.1 parser 146: "invalid datetime");
147: } else
1.22 paf 148: throw Exception("parser.runtime",
1.42.2.11.2.5 (paf 149:: 0,
1.24 paf 150: "invalid params count, must be 1 or >=2");
1.42.2.6 paf 151: vdate.set_time(t);
1.1 parser 152: }
153:
1.42.2.11.2.9 (paf 154:: static void _sql_string(Request& r, MethodParams&) {
1.42.2.6 paf 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;
1.42.2.11.2.7 (paf 157:: char *buf=new(PointerFreeGC) char[size];
1.42.2.6 paf 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:
1.42.2.11.2.5 (paf 161:: r.write_assign_lang(String(buf, size));
1.1 parser 162: }
163:
164:
1.42.2.11.2.9 (paf 165:: static void _roll(Request& r, MethodParams& params) {
1.42.2.6 paf 166: VDate& vdate=GET_SELF(r, VDate);
1.1 parser 167:
1.42.2.11.2.9 (paf 168:: const String& what=params.as_string(0, "'what' must be string");
1.42.2.11.2.5 (paf 169:: int oyear=0;
170:: int omonth=0;
171:: int oday=0;
1.1 parser 172: int *offset;
1.42.2.11.2.5 (paf 173:: if(what=="year") offset=&oyear;
174:: else if(what=="month") offset=&omonth;
175:: else if(what=="day") offset=&oday;
1.1 parser 176: else
1.22 paf 177: throw Exception("parser.runtime",
1.42.2.11.2.5 (paf 178:: &what,
1.1 parser 179: "must be year|month|day");
180:
1.42.2.11.2.9 (paf 181:: *offset=params.as_int(1, "offset must be int", r);
1.1 parser 182:
1.42.2.6 paf 183: time_t self_time=vdate.get_time();
1.13 paf 184: tm tmIn=*localtime(&self_time);
185: tm tmSaved=tmIn;
1.42.2.11.2.1 (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;
195:): int saved_mon=(tmIn.tm_mon+12*100)%12; // crossing year boundary backwards
196:): t_changed_date=mktime/*normalizetime*/(&tmIn);
197:): if(t_changed_date<0)
198:): throw Exception(0,
199:): 0,
200:): "bad resulting time (rolled out of valid date range)");
201:): if(oday==0 && tmIn.tm_mon!=saved_mon/*but it changed*/) {
202:): if(adjust_day <= -3/*31->28 max, so never, but...*/)
203:): throw Exception(0,
204:): 0,
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:
1.42.2.11.2.1 (paf 213:): tm *tmOut=localtime(&t_changed_date);
1.13 paf 214: if(!tmOut)
1.22 paf 215: throw Exception(0,
1.42.2.11.2.5 (paf 216:: 0,
1.42.2.11.2.1 (paf 217:): "bad resulting time (seconds from epoch=%d)", t_changed_date);
1.13 paf 218:
1.42.2.11.2.1 (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: {
1.42.2.11.2.1 (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,
1.42.2.11.2.5 (paf 230:: 0,
1.24 paf 231: "bad resulting time (hour hole)");
1.42.2.11.2.1 (paf 232:): */
1.21 paf 233:
1.42.2.11.2.1 (paf 234:): if(t_changed_time<0)
1.22 paf 235: throw Exception(0,
1.42.2.11.2.5 (paf 236:: 0,
1.21 paf 237: "bad resulting time (after reconstruction)");
1.13 paf 238:
1.42.2.11.2.1 (paf 239:): vdate.set_time(t_changed_time);
1.13 paf 240: }
1.1 parser 241: }
242:
1.42.2.11.2.9 (paf 243:: static Table& fill_month_days(Request& r, MethodParams& params, bool rus){
1.42.2.11.2.5 (paf 244:: Table& result=*new Table(date_calendar_table_template);
245::
1.42.2.11.2.9 (paf 246:: int year=params.as_int(1, "year must be int", r);
247:: int month=max(1, min(params.as_int(2, "month must be int", r), 12)) -1;
1.42.2.11.2.5 (paf 248::
249:: tm tmIn={0, 0, 0, 1, month, year-1900};
250:: time_t t=mktime(&tmIn);
1.10 parser 251: if(t<0)
1.22 paf 252: throw Exception(0,
1.42.2.11.2.5 (paf 253:: 0,
1.10 parser 254: "invalid date");
1.42.2.11.2.5 (paf 255:: tm *tmOut=localtime(&t);
256::
257:: int weekDay1=tmOut->tm_wday;
1.10 parser 258: if(rus)
259: weekDay1=weekDay1?weekDay1-1:6; //sunday last
1.42.2.11.2.5 (paf 260:: int monthDays=getMonthDays(year, month);
261::
262:: for(int _day=1-weekDay1; _day<=monthDays;) {
1.42.2.7 paf 263: Table::element_type row(new ArrayString(7));
1.34 paf 264: // calculating year week no [1..54]
265: char *weekno_buf;
266: size_t weekno_size;
1.36 paf 267: int weekyear;
1.34 paf 268: // 0..6 week days-cells fill with month days
1.42.2.11.2.5 (paf 269:: for(int wday=0; wday<7; wday++, _day++) {
270:: String* cell=new String;
1.10 parser 271: if(_day>=1 && _day<=monthDays) {
1.42.2.11.2.7 (paf 272:: char *buf=new(PointerFreeGC) char[2+1];
1.42.2.11.2.1 (paf 273:): cell->append_know_length(buf, sprintf(buf, "%02d", _day), String::L_CLEAN);
1.42.2.11.2.5 (paf 274:: }
1.42.2.6 paf 275: *row+=cell;
1.34 paf 276:
277: if(wday==(rus?3:4)/*thursday*/) {
278: tm tms={0,0,0, _day, month, year-1900};
279: /*normalize*/mktime(&tms);
280:
1.36 paf 281: weekyear=tms.tm_year+1900;
282:
1.35 paf 283: const int weekno_buf_size=2+1/*for stupid snprintfs*/ +1;
1.34 paf 284:
285: // http://www.merlyn.demon.co.uk/weekinfo.htm
286: 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 287: int n=1 + (tms.tm_yday-(FirstThurs[weekyear % 28]-3))/7;
1.42.2.11.2.7 (paf 288:: weekno_buf=new(PointerFreeGC) char[weekno_buf_size];
1.34 paf 289: weekno_size=snprintf(weekno_buf, weekno_buf_size, "%02d", n);
290: }
291:
1.10 parser 292: }
1.34 paf 293: // appending year week no
1.42.2.11.2.5 (paf 294:: *row+=new String(weekno_buf, weekno_size);
1.36 paf 295: // appending year week year
296: {
1.42.2.11.2.7 (paf 297:: char* buf=new(PointerFreeGC) char[4+1];
1.42.2.11.2.5 (paf 298:: *row+=new String(buf, sprintf(buf, "%02d", weekyear));
1.34 paf 299: }
1.42.2.11.2.5 (paf 300:: result+=row;
301:: }
302::
303:: return result;
1.10 parser 304: }
305:
1.42.2.11.2.9 (paf 306:: static Table& fill_week_days(Request& r, MethodParams& params, bool rus){
1.42.2.11.2.5 (paf 307:: Table::columns_type columns(new ArrayString(4));
308:: *columns+=new String("year");
309:: *columns+=new String("month");
310:: *columns+=new String("day");
311:: *columns+=new String("weekday");
312:: Table& result=*new Table(columns);
313::
1.42.2.11.2.9 (paf 314:: int year=params.as_int(1, "year must be int", r);
315:: int month=max(1, min(params.as_int(2, "month must be int", r), 12)) -1;
316:: int day=params.as_int(3, "day must be int", r);
1.42.2.11.2.5 (paf 317::
318:: tm tmIn={0, 0, 18, day, month, year-1900};
319:: time_t t=mktime(&tmIn);
1.10 parser 320: if(t<0)
1.22 paf 321: throw Exception(0,
1.42.2.11.2.5 (paf 322:: 0,
1.10 parser 323: "invalid date");
1.42.2.11.2.5 (paf 324:: tm *tmOut=localtime(&t);
1.10 parser 325:
1.42.2.11.2.5 (paf 326:: int baseWeekDay=tmOut->tm_wday;
1.10 parser 327: if(rus)
328: baseWeekDay=baseWeekDay?baseWeekDay-1:6; //sunday last
1.42.2.11.2.5 (paf 329::
330:: t-=baseWeekDay*SECS_PER_DAY;
331::
332:: for(int curWeekDay=0; curWeekDay<7; curWeekDay++, t+=SECS_PER_DAY) {
333:: tm *tmOut=localtime(&t);
1.42.2.7 paf 334: Table::element_type row(new ArrayString(4));
1.10 parser 335: #define WDFILL(size, value) { \
1.42.2.11.2.7 (paf 336:: char *buf=new(PointerFreeGC) char[size+1]; \
1.42.2.11.2.5 (paf 337:: *row+=new String(buf, sprintf(buf, "%0"#size"d", value)); \
1.10 parser 338: }
339: WDFILL(4, 1900+tmOut->tm_year);
340: WDFILL(2, 1+tmOut->tm_mon);
341: WDFILL(2, tmOut->tm_mday);
342: WDFILL(2, tmOut->tm_wday);
1.42.2.11.2.5 (paf 343:: result+=row;
344:: }
345::
346:: return result;
1.10 parser 347: }
348:
1.42.2.11.2.9 (paf 349:: static void _calendar(Request& r, MethodParams& params) {
350:: const String& what=params.as_string(0, "format must be strig");
1.10 parser 351: bool rus=false;
1.42.2.11.2.5 (paf 352:: if(what=="rus")
1.10 parser 353: rus=true;
1.42.2.11.2.5 (paf 354:: else if(what=="eng")
1.10 parser 355: rus=false;
356: else
1.22 paf 357: throw Exception("parser.runtime",
1.42.2.11.2.5 (paf 358:: &what,
1.10 parser 359: "must be rus|eng");
360:
1.42.2.11.2.1 (paf 361:: Table* table;
1.42.2.11.2.9 (paf 362:: if(params.count()==1+2)
1.42.2.11.2.5 (paf 363:: table=&fill_month_days(r, params, rus);
1.10 parser 364: else // 1+3
1.42.2.11.2.5 (paf 365:: table=&fill_week_days(r, params, rus);
1.10 parser 366:
1.42.2.11.2.5 (paf 367:: r.write_no_lang(*new VTable(table));
1.10 parser 368: }
369:
1.1 parser 370: // constructor
371:
1.42.2.6 paf 372: MDate::MDate(): Methoded("date") {
1.1 parser 373: // ^now[]
1.23 paf 374: add_native_method("now", Method::CT_DYNAMIC, _now, 0, 1);
1.1 parser 375:
1.30 paf 376: // ^create(float days)
1.17 paf 377: add_native_method("create", Method::CT_DYNAMIC, _create, 1, 6);
1.28 paf 378: // old name for compatibility with <= v1.17 2002/2/18 12:13:42 paf
1.17 paf 379: add_native_method("set", Method::CT_DYNAMIC, _create, 1, 6);
1.1 parser 380:
1.6 parser 381: // ^sql-string[]
1.5 parser 382: add_native_method("sql-string", Method::CT_DYNAMIC, _sql_string, 0, 0);
1.1 parser 383:
384: // ^roll(year|month|day;+/- 1)
385: add_native_method("roll", Method::CT_DYNAMIC, _roll, 2, 2);
1.10 parser 386:
387: // ^date:calendar[month|montheng;year;month] = table
388: // ^date:calendar[week|weekeng;year;month;day] = table
389: add_native_method("calendar", Method::CT_STATIC, _calendar, 3, 4);
1.1 parser 390:
391: }
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