Annotation of parser3/src/classes/date.C, revision 1.61
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:
1.61 ! paf 8: static const char * const IDENT_DATE_C="$Date: 2004/01/30 09:56:49 $";
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]
1.47 paf 75: /*not static, used in image.C*/ time_t cstr_to_time_t(char *cstr, bool fail_on_error) {
76: if( !cstr || !*cstr ) {
77: if(fail_on_error)
78: throw Exception(0,
79: 0,
80: "empty string is not valid datetime");
81: return 0;
82: }
1.41 paf 83: char *cur=cstr;
84: int date_delim=isdigit(cur[0])&&isdigit(cur[1])&&isdigit(cur[2])&&isdigit(cur[3])&&cur[4]==':'?':'
85: :'-';
1.46 paf 86: const char* year=lsplit(&cur, date_delim);
87: const char* month=lsplit(&cur, date_delim);
88: const char* mday=lsplit(&cur, ' ');
1.41 paf 89: if(!month)
90: cur=cstr;
1.46 paf 91: const char* hour=lsplit(&cur, ':');
92: const char* min=lsplit(&cur, ':');
93: const char* sec=cur;
1.41 paf 94:
1.56 paf 95: tm tmIn; memset(&tmIn, 0, sizeof(tmIn));
1.41 paf 96: tmIn.tm_isdst=-1;
97: if(!month)
98: if(min) {
99: year=mday=0; // HH:MM
100: time_t t=time(0);
101: tm *tmNow=localtime(&t);
102: tmIn.tm_year=tmNow->tm_year;
103: tmIn.tm_mon=tmNow->tm_mon;
104: tmIn.tm_mday=tmNow->tm_mday;
105: goto date_part_set;
106: } else
107: hour=min=sec=0; // not YYYY- & not HH: = just YYYY
1.61 ! paf 108: tmIn.tm_year=to_tm_year(pa_atoi(year));
1.60 paf 109: tmIn.tm_mon=month?pa_atoi(month)-1:0;
110: tmIn.tm_mday=mday?pa_atoi(mday):1;
1.41 paf 111: date_part_set:
1.60 paf 112: tmIn.tm_hour=hour?pa_atoi(hour):0;
113: tmIn.tm_min=min?pa_atoi(min):0;
114: tmIn.tm_sec=sec?pa_atoi(sec):0;
1.41 paf 115: time_t result=mktime(&tmIn);
116: if(result<0)
1.46 paf 117: if(fail_on_error)
1.41 paf 118: throw Exception(0,
1.46 paf 119: 0, //report_error_origin,
1.41 paf 120: "invalid datetime");
121:
122: return result;
123: }
124:
1.46 paf 125: static void _create(Request& r, MethodParams& params) {
126: VDate& vdate=GET_SELF(r, VDate);
1.1 parser 127:
1.23 paf 128: time_t t;
1.46 paf 129: if(params.count()==1) {
1.31 paf 130: // ^create[2002-04-25 18:14:00]
131: // ^create[18:14:00]
1.46 paf 132: if(const String* sdate=params[0].get_string())
133: t=cstr_to_time_t(sdate->cstrm(), true);
1.41 paf 134: else { // ^create(float days)
1.46 paf 135: t=(time_t)round(params.as_double(0, "float days must be double", r)*SECS_PER_DAY);
1.28 paf 136: if(t<0 || !localtime(&t))
137: throw Exception(0,
1.46 paf 138: 0,
1.28 paf 139: "invalid datetime");
140: }
1.46 paf 141: } else if(params.count()>=2) { // ^create(y;m;d[;h[;m[;s]]])
1.56 paf 142: tm tmIn; memset(&tmIn, 0, sizeof(tmIn));
1.1 parser 143: tmIn.tm_isdst=-1;
1.61 ! paf 144: tmIn.tm_year=to_tm_year(params.as_int(0, "year must be int", r));
1.46 paf 145: tmIn.tm_mon=params.as_int(1, "month must be int", r)-1;
146: tmIn.tm_mday=params.count()>2?params.as_int(2, "mday must be int", r):1;
147: if(params.count()>3) tmIn.tm_hour=params.as_int(3, "hour must be int", r);
148: if(params.count()>4) tmIn.tm_min=params.as_int(4, "minutes must be int", r);
149: if(params.count()>5) tmIn.tm_sec=params.as_int(5, "seconds must be int", r);
1.23 paf 150: t=mktime(&tmIn);
151: if(t<0)
1.22 paf 152: throw Exception(0,
1.46 paf 153: 0,
1.1 parser 154: "invalid datetime");
155: } else
1.22 paf 156: throw Exception("parser.runtime",
1.46 paf 157: 0,
1.24 paf 158: "invalid params count, must be 1 or >=2");
1.46 paf 159: vdate.set_time(t);
1.1 parser 160: }
161:
1.46 paf 162: static void _sql_string(Request& r, MethodParams&) {
163: VDate& vdate=GET_SELF(r, VDate);
1.2 parser 164: int size=1+ 4+1+2+1+2 +1+ 2+1+2+1+2 +1 +1;
1.46 paf 165: char *buf=new(PointerFreeGC) char[size];
166: time_t time=vdate.get_time();
1.14 paf 167: size=strftime(buf, size, "%Y-%m-%d %H:%M:%S", localtime(&time));
1.1 parser 168:
1.46 paf 169: r.write_assign_lang(String(buf, size));
1.1 parser 170: }
171:
1.46 paf 172: static void _roll(Request& r, MethodParams& params) {
173: VDate& vdate=GET_SELF(r, VDate);
1.1 parser 174:
1.46 paf 175: const String& what=params.as_string(0, "'what' must be string");
1.43 paf 176: int oyear=0;
177: int omonth=0;
178: int oday=0;
1.1 parser 179: int *offset;
180: if(what=="year") offset=&oyear;
181: else if(what=="month") offset=&omonth;
182: else if(what=="day") offset=&oday;
1.48 paf 183: else if(what=="TZ") {
184: const String& argument_tz=params.as_string(1, "'TZ' must be string");
185: vdate.set_tz(&argument_tz);
186: return;
187: } else
1.22 paf 188: throw Exception("parser.runtime",
1.1 parser 189: &what,
1.48 paf 190: "must be year|month|day|TZ");
1.1 parser 191:
1.46 paf 192: *offset=params.as_int(1, "offset must be int", r);
1.1 parser 193:
1.46 paf 194: time_t self_time=vdate.get_time();
1.13 paf 195: tm tmIn=*localtime(&self_time);
196: tm tmSaved=tmIn;
1.43 paf 197: int adjust_day=0;
198: time_t t_changed_date;
199: while(true) {
200: tmIn.tm_year+=oyear;
201: tmIn.tm_mon+=omonth;
202: tmIn.tm_mday+=oday+adjust_day;
203: tmIn.tm_hour=24/2;
204: tmIn.tm_min=0;
205: tmIn.tm_sec=0;
1.44 paf 206: int saved_mon=(tmIn.tm_mon+12*100)%12; // crossing year boundary backwards
1.43 paf 207: t_changed_date=mktime/*normalizetime*/(&tmIn);
208: if(t_changed_date<0)
209: throw Exception(0,
1.46 paf 210: 0,
1.43 paf 211: "bad resulting time (rolled out of valid date range)");
1.46 paf 212: if(oday==0 && tmIn.tm_mon!=saved_mon/*but it changed*/) {
1.43 paf 213: if(adjust_day <= -3/*31->28 max, so never, but...*/)
214: throw Exception(0,
1.46 paf 215: 0,
1.43 paf 216: "bad resulting time (day hole still with %d day adjustment)", adjust_day );
217:
218: tmIn=tmSaved; // restoring
219: --adjust_day; //retrying with prev day
220: } else
221: break;
222: }
1.13 paf 223:
1.43 paf 224: tm *tmOut=localtime(&t_changed_date);
1.13 paf 225: if(!tmOut)
1.22 paf 226: throw Exception(0,
1.46 paf 227: 0,
1.43 paf 228: "bad resulting time (seconds from epoch=%d)", t_changed_date);
1.13 paf 229:
1.43 paf 230: tmOut->tm_hour=tmSaved.tm_hour;
231: tmOut->tm_min=tmSaved.tm_min;
232: tmOut->tm_sec=tmSaved.tm_sec;
1.20 paf 233: tmOut->tm_isdst=-1;
1.13 paf 234: {
1.43 paf 235: time_t t_changed_time=mktime/*normalizetime*/(tmOut);
236: /*autofix: in msk timezone last sunday of april hour hole: [2am->3am)
1.21 paf 237: if(
238: tmOut->tm_hour!=tmSaved.tm_hour
239: ||tmOut->tm_min!=tmSaved.tm_min)
1.22 paf 240: throw Exception(0,
1.46 paf 241: 0,
1.24 paf 242: "bad resulting time (hour hole)");
1.43 paf 243: */
1.21 paf 244:
1.43 paf 245: if(t_changed_time<0)
1.22 paf 246: throw Exception(0,
1.46 paf 247: 0,
1.21 paf 248: "bad resulting time (after reconstruction)");
1.13 paf 249:
1.46 paf 250: vdate.set_time(t_changed_time);
1.13 paf 251: }
1.1 parser 252: }
253:
1.46 paf 254: static Table& fill_month_days(Request& r, MethodParams& params, bool rus){
1.45 paf 255: Table::Action_options table_options;
1.46 paf 256: Table& result=*new Table(date_calendar_table_template, table_options);
257:
258: int year=params.as_int(1, "year must be int", r);
259: int month=max(1, min(params.as_int(2, "month must be int", r), 12)) -1;
1.43 paf 260:
1.55 paf 261: tm tmIn;
1.56 paf 262: memset(&tmIn, 0, sizeof(tmIn));
1.55 paf 263: tmIn.tm_mday=1;
264: tmIn.tm_mon=month;
1.58 paf 265: tmIn.tm_year=year-1900;
1.55 paf 266:
1.43 paf 267: time_t t=mktime(&tmIn);
1.10 parser 268: if(t<0)
1.22 paf 269: throw Exception(0,
1.46 paf 270: 0,
1.10 parser 271: "invalid date");
1.43 paf 272: tm *tmOut=localtime(&t);
273:
274: int weekDay1=tmOut->tm_wday;
1.10 parser 275: if(rus)
276: weekDay1=weekDay1?weekDay1-1:6; //sunday last
1.43 paf 277: int monthDays=getMonthDays(year, month);
278:
279: for(int _day=1-weekDay1; _day<=monthDays;) {
1.46 paf 280: Table::element_type row(new ArrayString(7));
1.34 paf 281: // calculating year week no [1..54]
1.53 paf 282: char *weekno_buf=0; // surely would be assigned to, but to calm down compiler
283: size_t weekno_size=0; // same
284: int weekyear=0; // same
1.34 paf 285: // 0..6 week days-cells fill with month days
1.43 paf 286: for(int wday=0; wday<7; wday++, _day++) {
1.46 paf 287: String* cell=new String;
1.10 parser 288: if(_day>=1 && _day<=monthDays) {
1.46 paf 289: char *buf=new(PointerFreeGC) char[2+1];
290: cell->append_know_length(buf, sprintf(buf, "%02d", _day), String::L_CLEAN);
291: }
292: *row+=cell;
1.34 paf 293:
294: if(wday==(rus?3:4)/*thursday*/) {
1.57 paf 295: tm tms;
296: memset(&tms, 0, sizeof(tmIn));
297: tms.tm_mday=_day;
298: tms.tm_mon=month;
1.58 paf 299: tms.tm_year=year-1900;
1.57 paf 300:
1.34 paf 301: /*normalize*/mktime(&tms);
302:
1.36 paf 303: weekyear=tms.tm_year+1900;
304:
1.35 paf 305: const int weekno_buf_size=2+1/*for stupid snprintfs*/ +1;
1.34 paf 306:
307: // http://www.merlyn.demon.co.uk/weekinfo.htm
308: 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 309: int n=1 + (tms.tm_yday-(FirstThurs[weekyear % 28]-3))/7;
1.46 paf 310: weekno_buf=new(PointerFreeGC) char[weekno_buf_size];
1.34 paf 311: weekno_size=snprintf(weekno_buf, weekno_buf_size, "%02d", n);
312: }
313:
1.10 parser 314: }
1.34 paf 315: // appending year week no
1.46 paf 316: *row+=new String(weekno_buf, weekno_size);
1.36 paf 317: // appending year week year
318: {
1.46 paf 319: char* buf=new(PointerFreeGC) char[4+1];
320: *row+=new String(buf, sprintf(buf, "%02d", weekyear));
1.34 paf 321: }
1.46 paf 322: result+=row;
323: }
324:
325: return result;
1.10 parser 326: }
327:
1.46 paf 328: static Table& fill_week_days(Request& r, MethodParams& params, bool rus){
329: Table::columns_type columns(new ArrayString(4));
330: *columns+=new String("year");
331: *columns+=new String("month");
332: *columns+=new String("day");
333: *columns+=new String("weekday");
334: Table& result=*new Table(columns);
335:
336: int year=params.as_int(1, "year must be int", r);
337: int month=max(1, min(params.as_int(2, "month must be int", r), 12)) -1;
338: int day=params.as_int(3, "day must be int", r);
339:
1.55 paf 340: tm tmIn;
1.56 paf 341: memset(&tmIn, 0, sizeof(tmIn));
1.55 paf 342: tmIn.tm_hour=18;
343: tmIn.tm_mday=day;
344: tmIn.tm_mon=month;
1.58 paf 345: tmIn.tm_year=year-1900;
1.55 paf 346:
1.46 paf 347: time_t t=mktime(&tmIn);
1.10 parser 348: if(t<0)
1.22 paf 349: throw Exception(0,
1.46 paf 350: 0,
1.10 parser 351: "invalid date");
1.46 paf 352: tm *tmOut=localtime(&t);
1.10 parser 353:
1.46 paf 354: int baseWeekDay=tmOut->tm_wday;
1.10 parser 355: if(rus)
356: baseWeekDay=baseWeekDay?baseWeekDay-1:6; //sunday last
1.46 paf 357:
358: t-=baseWeekDay*SECS_PER_DAY;
359:
360: for(int curWeekDay=0; curWeekDay<7; curWeekDay++, t+=SECS_PER_DAY) {
361: tm *tmOut=localtime(&t);
362: Table::element_type row(new ArrayString(4));
1.10 parser 363: #define WDFILL(size, value) { \
1.46 paf 364: char *buf=new(PointerFreeGC) char[size+1]; \
365: *row+=new String(buf, sprintf(buf, "%0"#size"d", value)); \
1.10 parser 366: }
367: WDFILL(4, 1900+tmOut->tm_year);
368: WDFILL(2, 1+tmOut->tm_mon);
369: WDFILL(2, tmOut->tm_mday);
370: WDFILL(2, tmOut->tm_wday);
1.46 paf 371: result+=row;
372: }
373:
374: return result;
1.10 parser 375: }
376:
1.46 paf 377: static void _calendar(Request& r, MethodParams& params) {
378: const String& what=params.as_string(0, "format must be strig");
1.10 parser 379: bool rus=false;
380: if(what=="rus")
381: rus=true;
382: else if(what=="eng")
383: rus=false;
384: else
1.22 paf 385: throw Exception("parser.runtime",
1.10 parser 386: &what,
387: "must be rus|eng");
388:
1.46 paf 389: Table* table;
390: if(params.count()==1+2)
391: table=&fill_month_days(r, params, rus);
1.10 parser 392: else // 1+3
1.46 paf 393: table=&fill_week_days(r, params, rus);
1.10 parser 394:
1.46 paf 395: r.write_no_lang(*new VTable(table));
1.10 parser 396: }
397:
1.49 paf 398: static void _unix_timestamp(Request& r, MethodParams& params) {
399: VDate& vdate=GET_SELF(r, VDate);
400:
401: if(params.count()==0) {
402: // ^date.unix-timestamp[]
403: r.write_no_lang(*new VInt((int)vdate.get_time()));
404: } else {
1.50 paf 405: if(vdate.get_time())
406: throw Exception(0,
407: 0,
408: "date object already constructed");
1.51 paf 409:
1.50 paf 410: // ^unix-timestamp(time_t)
411: time_t t=(time_t)params.as_int(0, "Unix timestamp must be integer", r);
1.49 paf 412:
1.50 paf 413: vdate.set_time(t);
1.49 paf 414: }
415: }
416:
417:
1.1 parser 418: // constructor
419:
1.46 paf 420: MDate::MDate(): Methoded("date") {
1.1 parser 421: // ^now[]
1.23 paf 422: add_native_method("now", Method::CT_DYNAMIC, _now, 0, 1);
1.1 parser 423:
1.30 paf 424: // ^create(float days)
1.17 paf 425: add_native_method("create", Method::CT_DYNAMIC, _create, 1, 6);
1.28 paf 426: // old name for compatibility with <= v1.17 2002/2/18 12:13:42 paf
1.17 paf 427: add_native_method("set", Method::CT_DYNAMIC, _create, 1, 6);
1.1 parser 428:
1.6 parser 429: // ^sql-string[]
1.5 parser 430: add_native_method("sql-string", Method::CT_DYNAMIC, _sql_string, 0, 0);
1.1 parser 431:
432: // ^roll(year|month|day;+/- 1)
433: add_native_method("roll", Method::CT_DYNAMIC, _roll, 2, 2);
1.10 parser 434:
435: // ^date:calendar[month|montheng;year;month] = table
436: // ^date:calendar[week|weekeng;year;month;day] = table
437: add_native_method("calendar", Method::CT_STATIC, _calendar, 3, 4);
1.1 parser 438:
1.49 paf 439:
440: // ^unix-timestamp[]
441: add_native_method("unix-timestamp", Method::CT_DYNAMIC, _unix_timestamp, 0, 1);
1.1 parser 442: }
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