Annotation of parser3/src/classes/date.C, revision 1.65.4.1
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:
1.65.4.1! 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, ':');
91: const char* sec=cur;
1.41 paf 92:
1.56 paf 93: tm tmIn; memset(&tmIn, 0, sizeof(tmIn));
1.41 paf 94: tmIn.tm_isdst=-1;
95: if(!month)
96: if(min) {
97: year=mday=0; // HH:MM
98: time_t t=time(0);
99: tm *tmNow=localtime(&t);
100: tmIn.tm_year=tmNow->tm_year;
101: tmIn.tm_mon=tmNow->tm_mon;
102: tmIn.tm_mday=tmNow->tm_mday;
103: goto date_part_set;
104: } else
105: hour=min=sec=0; // not YYYY- & not HH: = just YYYY
1.61 paf 106: tmIn.tm_year=to_tm_year(pa_atoi(year));
1.60 paf 107: tmIn.tm_mon=month?pa_atoi(month)-1:0;
108: tmIn.tm_mday=mday?pa_atoi(mday):1;
1.41 paf 109: date_part_set:
1.65 paf 110: tmIn.tm_hour=hour?pa_atoi(hour):0;
1.60 paf 111: tmIn.tm_min=min?pa_atoi(min):0;
1.64 paf 112: tmIn.tm_sec=sec?pa_atoi(sec):0;
1.65 paf 113: return tmIn;
1.41 paf 114: }
115:
1.46 paf 116: static void _create(Request& r, MethodParams& params) {
117: VDate& vdate=GET_SELF(r, VDate);
1.1 parser 118:
1.46 paf 119: if(params.count()==1) {
1.31 paf 120: // ^create[2002-04-25 18:14:00]
121: // ^create[18:14:00]
1.46 paf 122: if(const String* sdate=params[0].get_string())
1.65 paf 123: vdate.set_time(cstr_to_time_t(sdate->cstrm()));
1.41 paf 124: else { // ^create(float days)
1.65 paf 125: time_t t=(time_t)round(params.as_double(0, "float days must be double", r)*SECS_PER_DAY);
1.28 paf 126: if(t<0 || !localtime(&t))
127: throw Exception(0,
1.46 paf 128: 0,
1.28 paf 129: "invalid datetime");
1.65 paf 130: vdate.set_time(t);
1.28 paf 131: }
1.46 paf 132: } else if(params.count()>=2) { // ^create(y;m;d[;h[;m[;s]]])
1.56 paf 133: tm tmIn; memset(&tmIn, 0, sizeof(tmIn));
1.1 parser 134: tmIn.tm_isdst=-1;
1.61 paf 135: tmIn.tm_year=to_tm_year(params.as_int(0, "year must be int", r));
1.46 paf 136: tmIn.tm_mon=params.as_int(1, "month must be int", r)-1;
137: tmIn.tm_mday=params.count()>2?params.as_int(2, "mday must be int", r):1;
1.64 paf 138: int savedHour=0;
139: if(params.count()>3) savedHour=tmIn.tm_hour=params.as_int(3, "hour must be int", r);
1.46 paf 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);
1.65 paf 142: vdate.set_time(tmIn);
1.1 parser 143: } else
1.22 paf 144: throw Exception("parser.runtime",
1.46 paf 145: 0,
1.24 paf 146: "invalid params count, must be 1 or >=2");
1.1 parser 147: }
148:
1.46 paf 149: static void _sql_string(Request& r, MethodParams&) {
150: VDate& vdate=GET_SELF(r, VDate);
1.2 parser 151: int size=1+ 4+1+2+1+2 +1+ 2+1+2+1+2 +1 +1;
1.46 paf 152: char *buf=new(PointerFreeGC) char[size];
153: time_t time=vdate.get_time();
1.14 paf 154: size=strftime(buf, size, "%Y-%m-%d %H:%M:%S", localtime(&time));
1.1 parser 155:
1.46 paf 156: r.write_assign_lang(String(buf, size));
1.1 parser 157: }
158:
1.46 paf 159: static void _roll(Request& r, MethodParams& params) {
160: VDate& vdate=GET_SELF(r, VDate);
1.1 parser 161:
1.46 paf 162: const String& what=params.as_string(0, "'what' must be string");
1.43 paf 163: int oyear=0;
164: int omonth=0;
165: int oday=0;
1.1 parser 166: int *offset;
167: if(what=="year") offset=&oyear;
168: else if(what=="month") offset=&omonth;
169: else if(what=="day") offset=&oday;
1.48 paf 170: else if(what=="TZ") {
171: const String& argument_tz=params.as_string(1, "'TZ' must be string");
172: vdate.set_tz(&argument_tz);
173: return;
174: } else
1.22 paf 175: throw Exception("parser.runtime",
1.1 parser 176: &what,
1.48 paf 177: "must be year|month|day|TZ");
1.1 parser 178:
1.46 paf 179: *offset=params.as_int(1, "offset must be int", r);
1.1 parser 180:
1.46 paf 181: time_t self_time=vdate.get_time();
1.13 paf 182: tm tmIn=*localtime(&self_time);
183: tm tmSaved=tmIn;
1.43 paf 184: int adjust_day=0;
185: time_t t_changed_date;
186: while(true) {
187: tmIn.tm_year+=oyear;
188: tmIn.tm_mon+=omonth;
189: tmIn.tm_mday+=oday+adjust_day;
190: tmIn.tm_hour=24/2;
191: tmIn.tm_min=0;
192: tmIn.tm_sec=0;
1.44 paf 193: int saved_mon=(tmIn.tm_mon+12*100)%12; // crossing year boundary backwards
1.43 paf 194: t_changed_date=mktime/*normalizetime*/(&tmIn);
195: if(t_changed_date<0)
196: throw Exception(0,
1.46 paf 197: 0,
1.43 paf 198: "bad resulting time (rolled out of valid date range)");
1.46 paf 199: if(oday==0 && tmIn.tm_mon!=saved_mon/*but it changed*/) {
1.43 paf 200: if(adjust_day <= -3/*31->28 max, so never, but...*/)
201: throw Exception(0,
1.46 paf 202: 0,
1.43 paf 203: "bad resulting time (day hole still with %d day adjustment)", adjust_day );
204:
205: tmIn=tmSaved; // restoring
206: --adjust_day; //retrying with prev day
207: } else
208: break;
209: }
1.13 paf 210:
1.43 paf 211: tm *tmOut=localtime(&t_changed_date);
1.13 paf 212: if(!tmOut)
1.22 paf 213: throw Exception(0,
1.46 paf 214: 0,
1.43 paf 215: "bad resulting time (seconds from epoch=%d)", t_changed_date);
1.13 paf 216:
1.43 paf 217: tmOut->tm_hour=tmSaved.tm_hour;
218: tmOut->tm_min=tmSaved.tm_min;
219: tmOut->tm_sec=tmSaved.tm_sec;
1.20 paf 220: tmOut->tm_isdst=-1;
1.13 paf 221: {
1.43 paf 222: time_t t_changed_time=mktime/*normalizetime*/(tmOut);
1.63 paf 223: /*autofix: in msk timezone last sunday of march hour hole: [2am->3am)
1.21 paf 224: if(
225: tmOut->tm_hour!=tmSaved.tm_hour
226: ||tmOut->tm_min!=tmSaved.tm_min)
1.22 paf 227: throw Exception(0,
1.46 paf 228: 0,
1.24 paf 229: "bad resulting time (hour hole)");
1.43 paf 230: */
1.21 paf 231:
1.43 paf 232: if(t_changed_time<0)
1.22 paf 233: throw Exception(0,
1.46 paf 234: 0,
1.21 paf 235: "bad resulting time (after reconstruction)");
1.13 paf 236:
1.46 paf 237: vdate.set_time(t_changed_time);
1.13 paf 238: }
1.1 parser 239: }
240:
1.46 paf 241: static Table& fill_month_days(Request& r, MethodParams& params, bool rus){
1.45 paf 242: Table::Action_options table_options;
1.46 paf 243: Table& result=*new Table(date_calendar_table_template, table_options);
244:
245: int year=params.as_int(1, "year must be int", r);
246: int month=max(1, min(params.as_int(2, "month must be int", r), 12)) -1;
1.43 paf 247:
1.55 paf 248: tm tmIn;
1.56 paf 249: memset(&tmIn, 0, sizeof(tmIn));
1.55 paf 250: tmIn.tm_mday=1;
251: tmIn.tm_mon=month;
1.58 paf 252: tmIn.tm_year=year-1900;
1.55 paf 253:
1.43 paf 254: time_t t=mktime(&tmIn);
1.10 parser 255: if(t<0)
1.22 paf 256: throw Exception(0,
1.46 paf 257: 0,
1.10 parser 258: "invalid date");
1.43 paf 259: tm *tmOut=localtime(&t);
260:
261: int weekDay1=tmOut->tm_wday;
1.10 parser 262: if(rus)
263: weekDay1=weekDay1?weekDay1-1:6; //sunday last
1.43 paf 264: int monthDays=getMonthDays(year, month);
265:
266: for(int _day=1-weekDay1; _day<=monthDays;) {
1.46 paf 267: Table::element_type row(new ArrayString(7));
1.34 paf 268: // calculating year week no [1..54]
1.53 paf 269: char *weekno_buf=0; // surely would be assigned to, but to calm down compiler
270: size_t weekno_size=0; // same
271: int weekyear=0; // same
1.34 paf 272: // 0..6 week days-cells fill with month days
1.43 paf 273: for(int wday=0; wday<7; wday++, _day++) {
1.46 paf 274: String* cell=new String;
1.10 parser 275: if(_day>=1 && _day<=monthDays) {
1.46 paf 276: char *buf=new(PointerFreeGC) char[2+1];
277: cell->append_know_length(buf, sprintf(buf, "%02d", _day), String::L_CLEAN);
278: }
279: *row+=cell;
1.34 paf 280:
281: if(wday==(rus?3:4)/*thursday*/) {
1.57 paf 282: tm tms;
283: memset(&tms, 0, sizeof(tmIn));
284: tms.tm_mday=_day;
285: tms.tm_mon=month;
1.58 paf 286: tms.tm_year=year-1900;
1.57 paf 287:
1.34 paf 288: /*normalize*/mktime(&tms);
289:
1.36 paf 290: weekyear=tms.tm_year+1900;
291:
1.35 paf 292: const int weekno_buf_size=2+1/*for stupid snprintfs*/ +1;
1.34 paf 293:
294: // http://www.merlyn.demon.co.uk/weekinfo.htm
295: 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 296: int n=1 + (tms.tm_yday-(FirstThurs[weekyear % 28]-3))/7;
1.46 paf 297: weekno_buf=new(PointerFreeGC) char[weekno_buf_size];
1.34 paf 298: weekno_size=snprintf(weekno_buf, weekno_buf_size, "%02d", n);
299: }
300:
1.10 parser 301: }
1.34 paf 302: // appending year week no
1.46 paf 303: *row+=new String(weekno_buf, weekno_size);
1.36 paf 304: // appending year week year
305: {
1.46 paf 306: char* buf=new(PointerFreeGC) char[4+1];
307: *row+=new String(buf, sprintf(buf, "%02d", weekyear));
1.34 paf 308: }
1.46 paf 309: result+=row;
310: }
311:
312: return result;
1.10 parser 313: }
314:
1.46 paf 315: static Table& fill_week_days(Request& r, MethodParams& params, bool rus){
316: Table::columns_type columns(new ArrayString(4));
317: *columns+=new String("year");
318: *columns+=new String("month");
319: *columns+=new String("day");
320: *columns+=new String("weekday");
321: Table& result=*new Table(columns);
322:
323: int year=params.as_int(1, "year must be int", r);
324: int month=max(1, min(params.as_int(2, "month must be int", r), 12)) -1;
325: int day=params.as_int(3, "day must be int", r);
326:
1.55 paf 327: tm tmIn;
1.56 paf 328: memset(&tmIn, 0, sizeof(tmIn));
1.55 paf 329: tmIn.tm_hour=18;
330: tmIn.tm_mday=day;
331: tmIn.tm_mon=month;
1.58 paf 332: tmIn.tm_year=year-1900;
1.55 paf 333:
1.46 paf 334: time_t t=mktime(&tmIn);
1.10 parser 335: if(t<0)
1.22 paf 336: throw Exception(0,
1.46 paf 337: 0,
1.10 parser 338: "invalid date");
1.46 paf 339: tm *tmOut=localtime(&t);
1.10 parser 340:
1.46 paf 341: int baseWeekDay=tmOut->tm_wday;
1.10 parser 342: if(rus)
343: baseWeekDay=baseWeekDay?baseWeekDay-1:6; //sunday last
1.46 paf 344:
345: t-=baseWeekDay*SECS_PER_DAY;
346:
347: for(int curWeekDay=0; curWeekDay<7; curWeekDay++, t+=SECS_PER_DAY) {
348: tm *tmOut=localtime(&t);
349: Table::element_type row(new ArrayString(4));
1.10 parser 350: #define WDFILL(size, value) { \
1.46 paf 351: char *buf=new(PointerFreeGC) char[size+1]; \
352: *row+=new String(buf, sprintf(buf, "%0"#size"d", value)); \
1.10 parser 353: }
354: WDFILL(4, 1900+tmOut->tm_year);
355: WDFILL(2, 1+tmOut->tm_mon);
356: WDFILL(2, tmOut->tm_mday);
357: WDFILL(2, tmOut->tm_wday);
1.46 paf 358: result+=row;
359: }
360:
361: return result;
1.10 parser 362: }
363:
1.46 paf 364: static void _calendar(Request& r, MethodParams& params) {
365: const String& what=params.as_string(0, "format must be strig");
1.10 parser 366: bool rus=false;
367: if(what=="rus")
368: rus=true;
369: else if(what=="eng")
370: rus=false;
371: else
1.22 paf 372: throw Exception("parser.runtime",
1.10 parser 373: &what,
374: "must be rus|eng");
375:
1.46 paf 376: Table* table;
377: if(params.count()==1+2)
378: table=&fill_month_days(r, params, rus);
1.10 parser 379: else // 1+3
1.46 paf 380: table=&fill_week_days(r, params, rus);
1.10 parser 381:
1.46 paf 382: r.write_no_lang(*new VTable(table));
1.10 parser 383: }
384:
1.49 paf 385: static void _unix_timestamp(Request& r, MethodParams& params) {
386: VDate& vdate=GET_SELF(r, VDate);
387:
388: if(params.count()==0) {
389: // ^date.unix-timestamp[]
390: r.write_no_lang(*new VInt((int)vdate.get_time()));
391: } else {
1.50 paf 392: if(vdate.get_time())
393: throw Exception(0,
394: 0,
395: "date object already constructed");
1.51 paf 396:
1.50 paf 397: // ^unix-timestamp(time_t)
398: time_t t=(time_t)params.as_int(0, "Unix timestamp must be integer", r);
1.49 paf 399:
1.50 paf 400: vdate.set_time(t);
1.49 paf 401: }
402: }
403:
404:
1.1 parser 405: // constructor
406:
1.46 paf 407: MDate::MDate(): Methoded("date") {
1.1 parser 408: // ^now[]
1.23 paf 409: add_native_method("now", Method::CT_DYNAMIC, _now, 0, 1);
1.1 parser 410:
1.30 paf 411: // ^create(float days)
1.17 paf 412: add_native_method("create", Method::CT_DYNAMIC, _create, 1, 6);
1.28 paf 413: // old name for compatibility with <= v1.17 2002/2/18 12:13:42 paf
1.17 paf 414: add_native_method("set", Method::CT_DYNAMIC, _create, 1, 6);
1.1 parser 415:
1.6 parser 416: // ^sql-string[]
1.5 parser 417: add_native_method("sql-string", Method::CT_DYNAMIC, _sql_string, 0, 0);
1.1 parser 418:
419: // ^roll(year|month|day;+/- 1)
420: add_native_method("roll", Method::CT_DYNAMIC, _roll, 2, 2);
1.10 parser 421:
422: // ^date:calendar[month|montheng;year;month] = table
423: // ^date:calendar[week|weekeng;year;month;day] = table
424: add_native_method("calendar", Method::CT_STATIC, _calendar, 3, 4);
1.1 parser 425:
1.49 paf 426:
427: // ^unix-timestamp[]
428: add_native_method("unix-timestamp", Method::CT_DYNAMIC, _unix_timestamp, 0, 1);
1.1 parser 429: }
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