/** * @author Kaiser Shahid * @copyright 2007-2010 * @site www.qaiser.net */ // compatibility since this was built for mootools function $type( obj ) { return typeof obj; } // for some reason, getTimezoneOffset wasn't returning the negative. // TODO: verify that getUTCHours() is correct // TODO: adjust for daylight savings Date.prototype.getTimezoneOffset = function() { return 330; var ltime = this.getHours() * 60 + this.getMinutes(); var gtime = this.getUTCHours() * 60 + this.getUTCMinutes(); var delta = ltime - gtime; return delta; } Date.prototype.getTimezoneGMT= function() { var val = this.getTimezoneOffset() / 60; var _s = '-', _p = ''; if ( val >= 0 ) _s = '+'; else val = 0 - val; // adjust to make it positive now if ( val < 10 ) _p = '0'; // leading 0 padding var _t = val.toString().split( '.' ); if ( _t.length == 2 ) val = _s + _p + _t[0] + ( parseFloat( '.' + _t[1] ) * 60 ); else val = _s + _p + _t[0] + '00'; return val; } /** * @param format String Should be similar to strftime() function * @param timestamp Date [Optional] If not given, use current time. */ Date.__format = '%Y-%m-%d %H:%i:%s'; Date.format = function() { var format = ''; var d = null; if ( arguments.length > 0 ) format = arguments[0]; else format = Date.__format; if ( arguments.length > 1 ) { d = arguments[1]; if ( $type( d ) == 'number' ) d = new Date( d ); } else d = new Date(); /*if ( !Date.qkopts['format_cache'][format] ) Date.qkopts['format_cache'][format] = Date.format_compile( format ); var _format = Date.qkopts['format_cache'][format];*/ var _format = format.split( '' ); var cache = {}, tmp = null, reg = null, val = null; var buffer = ''; for ( var i = 0; i < _format.length; i++ ) { token = _format[i]; if ( token == '%' ) { // read-ahead token = _format[i+1]; if ( token == '%' ) { buffer += '%'; i++; continue; } i++; } else { buffer += token; continue; } if ( !cache[token] ) { var t = null; // omitted placeholders: G, g, E*, O*, Z switch ( token ) { case 'A': val = Date.__locale['days'][d.getDay()]; break; // replaced by national representation of the full weekday name case 'a': val = Date.__locale['days_abbr'][d.getDay()]; break; // replaced by national representation of the abbreviated weekday name case 'B': val = Date.__locale['months'][d.getMonth()]; break; // is replaced by national representation of the full month name case 'b': val = Date.__locale['months_abbr'][d.getMonth()]; break; // is replaced by national representation of the abbreviated month name case 'C': val = Math.round( d.getFullYear() / 100 ); break; // is replaced by (year / 100) as decimal number; single digits are preceeded by 0 case 'c': val = Date.format( Date.__locale['datetime'], d ); break; // replaced by national representation of time and date case 'D': val = Date.format( '%m/%d/%y', d ); break; // is equivalent to: %m/%d/%y case 'd': val = Date.__f_0p( d.getDate() ); break; case 'E*': break; // not implemented case 'O*': break; // not implemented case 'e': val = d.getDate(); break; // replaced by the day of month as a decimal number (1-31); single digits are preceded by a blank case 'F': val = Date.format( '%Y-%m-%d', d ); break; // is equivalent to: %Y-%m-%d case 'G': break; // is replaced by a year as a decimal number with century. This year is the one that contains the greater part of the week (Monday as the first day of the week). case 'g': break; // is replaced by the same year as in ``%G'', but as a decimal number without century (00-99). case 'H': val = Date.__f_0p( d.getHours() ); break; // is replaced by the hour (24-hour clock) as a decimal number (00-23). case 'h': val = Date.__locale['months_abbr'][d.getMonth()]; break; // the same as %b. case 'I': // is replaced by the hour (12-hour clock) as a decimal number (01-12). val = d.getHours(); if ( val > 12 ) val = val % 12; else if ( val == 0 ) val = 12; val = Date.__format_0p( val ); break; //case 'i': val = Date.__f_0p( d.getMinutes() ); break; case 'j': val = Date.__f_daysinyear( d ); break; // is replaced by the day of the year as a decimal number (001-366). case 'k': val = d.getHours(); break; // is replaced by the hour (24-hour clock) as a decimal number (0-23); single digits are preceded by a blank. case 'l': // is replaced by the hour (12-hour clock) as a decimal number (1-12); single digits are preceded by a blank. val = d.getHours(); if ( val > 12 ) val = val % 12; else if ( val == 0 ) val = 12; break; case 'M': val = Date.__f_0p( d.getMinutes() ); break; // is replaced by the minute as a decimal number (00-59). case 'm': val = Date.__locale['months_num'][d.getMonth()]; break; // is replaced by the month as a decimal number (01-12). case 'n': val = "\n"; break; // is replaced by a newline. case 'p': // is replaced by national representation of either "ante meridiem" or "post meridiem" as appropriate. var _m = d.getHours(); if ( _m < 12 ) val = Date.__locale['ampm'][0]; else val = Date.__locale['ampm'][1]; break; case 'R': val = Date.format( '%H:%M', d ); break; // is equivalent to: %H:%M. case 'r': val = Date.format( '%I:%M:%S %p' ); break; // is equivalent to: %I:%M:%S %p. case 'S': val = Date.__f_0p( d.getSeconds() ); break; // is replaced by the second as a decimal number (00-60). case 's': val = d.getTime(); break; // is replaced by the number of seconds since the Epoch, UTC (see mktime(3)). case 'T': val = Date.format( '%H:%M:%S', d ); break; // is equivalent to: %H:%M:%S. case 't': val = " "; break; // is replaced by a tab. case 'U': val = Date.__f_weeksinyear( d, 'U' ); break; // is replaced by the week number of the year (Sunday as the first day of the week) as a decimal number (00-53). case 'u': val = d.getDay() + 1; break; // is replaced by the weekday (Monday as the first day of the week) as a decimal number (1-7). case 'V': val = Date.__f_weeksinyear( d, 'V' ); break; // is replaced by the week number of the year (Monday as the first day of the week) as a decimal number (01-53). If the week containing January 1 has four or more days in the new year, then it is week 1; otherwise it is the last week of the previous year, and the next week is week 1. case 'v': val = Date.format( '%e-%b-%Y', d ); break; // is equivalent to: %e-%b-%Y. case 'W': val = Date.__f_weeksinyear( d, 'W' ); break; // is replaced by the week number of the year (Monday as the first day of the week) as a decimal number (00-53). case 'w': val = d.getDay(); break; // is replaced by the weekday (Sunday as the first day of the week) as a decimal number (0-6). case 'X': val = Date.format( Date.__locale['time'], d ); break; // is replaced by national representation of the time. case 'x': val = Date.format( Date.__locale['date'], d ); break; // is replaced by national representation of the date. case 'Y': val = d.getFullYear(); break; // is replaced by the year with century as a decimal number. case 'y': val = d.getFullYear().toString().substring( 2, 4 ); break; // is replaced by the year without century as a decimal number (00-99). case 'Z': val = d.getTimezoneGMT(); break; // is replaced by the time zone name. case 'z': val = d.getTimezoneOffset() / 60; break; // is replaced by the time zone offset from UTC; a leading plus sign stands for east of UTC, a minus sign for west of UTC, hours and minutes follow with two digits each and no delimiter between them (common form for RFC 822 date headers). } cache[token] = val; } val = cache[token]; buffer += val; } return buffer; }; // TODO: research more locale stuff and have a function to set locale info? // TODO: be able to load locale dynamically [via ajax or remote scripting] Date.__locale = { 'days': ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'] , 'days_abbr': ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'] , 'daysinmonth': [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31] , 'months': ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'] , 'months_abbr': ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'] , 'months_num': ['01','02','03','04','05','06','07','08','09','10','11','12'] // month as a 2-char decimal number , 'ampm': ['am', 'pm'] , 'date': '%Y-%m-%d' , 'time': '%H:%M:%S' , 'datetime': '%Y-%m-%d %H:%M:%S' }; // 0-pad single digits Date.__f_0p = function( num ) { num = num.toString(); if ( num.length == 1 ) num = '0' + num; return num; } // calculate days in the year [000-366] Date.__f_daysinyear = function( d ) { var _m = d.getMonth(); var _y = d.getFullYear(); var _d = d.getDate(); var tot = 0; for ( var j = 0; j < _m; j++ ) tot += Date.__locale['daysinmonth'][j]; if ( _y % 4 == 0 && _m > 1 ) // leap year tot++; // TODO: pad with 0s if needed (%03d) return tot; } // TODO: fill in timezone names // TODO: determine DST Date.__tzs = { '0000': 'GMT' , '-0500': 'Eastern' }; /** * type is: * 'U' - week starting on a Sunday, 00-53 * 'V' - week starting on a Monday, 01-53; if four or more days in week starting Jan 1, week is 01, else, 53 * 'W' - week starting on a Monday, 00-53 */ // TODO: finish this (or at least W)! Date.__f_weeksinyear = function( d, type ) { var n = new Date( d.getTime() ); // set jan 1. return ''; } // accessible to instances Date.prototype.format = function() { if ( arguments.length == 0 ) return Date.format(); else if ( arguments.length == 1 ) return Date.format( arguments[0] ); else return Date.format( arguments[0], arguments[1] ); } //var k = new Date(); //alert( Date.format( '%%A %A %a %B %b | %D | %F | %U %z %Z', k ) );