1 d3.time.format = function(template) {

     2   var n = template.length;

     3 

     4   function format(date) {

     5     var string = [],

     6         i = -1,

     7         j = 0,

     8         c,

     9         f;

    10     while (++i < n) {

    11       if (template.charCodeAt(i) == 37) {

    12         string.push(

    13             template.substring(j, i),

    14             (f = d3_time_formats[c = template.charAt(++i)])

    15             ? f(date) : c);

    16         j = i + 1;

    17       }

    18     }

    19     string.push(template.substring(j, i));

    20     return string.join("");

    21   }

    22 

    23   format.parse = function(string) {

    24     var date = new d3_time(1900, 0, 1),

    25         i = d3_time_parse(date, template, string, 0);

    26     if (i != string.length) return null;

    27     if (date.hour12) {

    28       var hours = date.getHours() % 12;

    29       date.setHours(date.hour12pm ? hours + 12 : hours);

    30     }

    31     delete date.hour12;

    32     delete date.hour12pm;

    33     return date;

    34   };

    35 

    36   format.toString = function() {

    37     return template;

    38   };

    39 

    40   return format;

    41 };

    42 

    43 function d3_time_parse(date, template, string, j) {

    44   var c,

    45       p,

    46       i = 0,

    47       n = template.length,

    48       m = string.length;

    49   while (i < n) {

    50     if (j >= m) return -1;

    51     c = template.charCodeAt(i++);

    52     if (c == 37) {

    53       p = d3_time_parsers[template.charAt(i++)];

    54       if (!p || ((j = p(date, string, j)) < 0)) return -1;

    55     } else if (c != string.charCodeAt(j++)) {

    56       return -1;

    57     }

    58   }

    59   return j;

    60 }

    61 

    62 var d3_time_zfill2 = d3.format("02d"),

    63     d3_time_zfill3 = d3.format("03d"),

    64     d3_time_zfill4 = d3.format("04d"),

    65     d3_time_sfill2 = d3.format("2d");

    66 

    67 var d3_time_formats = {

    68   a: function(d) { return d3_time_weekdays[d.getDay()].substring(0, 3); },

    69   A: function(d) { return d3_time_weekdays[d.getDay()]; },

    70   b: function(d) { return d3_time_months[d.getMonth()].substring(0, 3); },

    71   B: function(d) { return d3_time_months[d.getMonth()]; },

    72   c: d3.time.format("%a %b %e %H:%M:%S %Y"),

    73   d: function(d) { return d3_time_zfill2(d.getDate()); },

    74   e: function(d) { return d3_time_sfill2(d.getDate()); },

    75   H: function(d) { return d3_time_zfill2(d.getHours()); },

    76   I: function(d) { return d3_time_zfill2(d.getHours() % 12 || 12); },

    77   j: d3_time_dayOfYear,

    78   L: function(d) { return d3_time_zfill3(d.getMilliseconds()); },

    79   m: function(d) { return d3_time_zfill2(d.getMonth() + 1); },

    80   M: function(d) { return d3_time_zfill2(d.getMinutes()); },

    81   p: function(d) { return d.getHours() >= 12 ? "PM" : "AM"; },

    82   S: function(d) { return d3_time_zfill2(d.getSeconds()); },

    83   U: d3_time_weekNumberSunday,

    84   w: function(d) { return d.getDay(); },

    85   W: d3_time_weekNumberMonday,

    86   x: d3.time.format("%m/%d/%y"),

    87   X: d3.time.format("%H:%M:%S"),

    88   y: function(d) { return d3_time_zfill2(d.getFullYear() % 100); },

    89   Y: function(d) { return d3_time_zfill4(d.getFullYear() % 10000); },

    90   Z: d3_time_zone,

    91   "%": function(d) { return "%"; }

    92 };

    93 

    94 var d3_time_parsers = {

    95   a: d3_time_parseWeekdayAbbrev,

    96   A: d3_time_parseWeekday,

    97   b: d3_time_parseMonthAbbrev,

    98   B: d3_time_parseMonth,

    99   c: d3_time_parseLocaleFull,

   100   d: d3_time_parseDay,

   101   e: d3_time_parseDay,

   102   H: d3_time_parseHour24,

   103   I: d3_time_parseHour12,

   104   // j: function(d, s, i) { /*TODO day of year [001,366] */ return i; },

   105   L: d3_time_parseMilliseconds,

   106   m: d3_time_parseMonthNumber,

   107   M: d3_time_parseMinutes,

   108   p: d3_time_parseAmPm,

   109   S: d3_time_parseSeconds,

   110   // U: function(d, s, i) { /*TODO week number (sunday) [00,53] */ return i; },

   111   // w: function(d, s, i) { /*TODO weekday [0,6] */ return i; },

   112   // W: function(d, s, i) { /*TODO week number (monday) [00,53] */ return i; },

   113   x: d3_time_parseLocaleDate,

   114   X: d3_time_parseLocaleTime,

   115   y: d3_time_parseYear,

   116   Y: d3_time_parseFullYear

   117   // ,

   118   // Z: function(d, s, i) { /*TODO time zone */ return i; },

   119   // "%": function(d, s, i) { /*TODO literal % */ return i; }

   120 };

   121 

   122 // Note: weekday is validated, but does not set the date.

   123 function d3_time_parseWeekdayAbbrev(date, string, i) {

   124   return string.substring(i, i += 3).toLowerCase() in d3_time_weekdayAbbrevLookup ? i : -1;

   125 }

   126 

   127 var d3_time_weekdayAbbrevLookup = {

   128   sun: 3,

   129   mon: 3,

   130   tue: 3,

   131   wed: 3,

   132   thu: 3,

   133   fri: 3,

   134   sat: 3

   135 };

   136 

   137 // Note: weekday is validated, but does not set the date.

   138 function d3_time_parseWeekday(date, string, i) {

   139   d3_time_weekdayRe.lastIndex = 0;

   140   var n = d3_time_weekdayRe.exec(string.substring(i, i + 10));

   141   return n ? i += n[0].length : -1;

   142 }

   143 

   144 var d3_time_weekdayRe = /^(?:Sunday|Monday|Tuesday|Wednesday|Thursday|Friday|Saturday)/ig;

   145 

   146 var d3_time_weekdays = [

   147   "Sunday",

   148   "Monday",

   149   "Tuesday",

   150   "Wednesday",

   151   "Thursday",

   152   "Friday",

   153   "Saturday"

   154 ];

   155 

   156 function d3_time_parseMonthAbbrev(date, string, i) {

   157   var n = d3_time_monthAbbrevLookup[string.substring(i, i += 3).toLowerCase()];

   158   return n == null ? -1 : (date.setMonth(n), i);

   159 }

   160 

   161 var d3_time_monthAbbrevLookup = {

   162   jan: 0,

   163   feb: 1,

   164   mar: 2,

   165   apr: 3,

   166   may: 4,

   167   jun: 5,

   168   jul: 6,

   169   aug: 7,

   170   sep: 8,

   171   oct: 9,

   172   nov: 10,

   173   dec: 11

   174 };

   175 

   176 function d3_time_parseMonth(date, string, i) {

   177   d3_time_monthRe.lastIndex = 0;

   178   var n = d3_time_monthRe.exec(string.substring(i, i + 12));

   179   return n ? (date.setMonth(d3_time_monthLookup[n[0].toLowerCase()]), i += n[0].length) : -1;

   180 }

   181 

   182 var d3_time_monthRe = /^(?:January|February|March|April|May|June|July|August|September|October|November|December)/ig;

   183 

   184 var d3_time_monthLookup = {

   185   january: 0,

   186   february: 1,

   187   march: 2,

   188   april: 3,

   189   may: 4,

   190   june: 5,

   191   july: 6,

   192   august: 7,

   193   september: 8,

   194   october: 9,

   195   november: 10,

   196   december: 11

   197 };

   198 

   199 var d3_time_months = [

   200   "January",

   201   "February",

   202   "March",

   203   "April",

   204   "May",

   205   "June",

   206   "July",

   207   "August",

   208   "September",

   209   "October",

   210   "November",

   211   "December"

   212 ];

   213 

   214 function d3_time_parseLocaleFull(date, string, i) {

   215   return d3_time_parse(date, d3_time_formats.c.toString(), string, i);

   216 }

   217 

   218 function d3_time_parseLocaleDate(date, string, i) {

   219   return d3_time_parse(date, d3_time_formats.x.toString(), string, i);

   220 }

   221 

   222 function d3_time_parseLocaleTime(date, string, i) {

   223   return d3_time_parse(date, d3_time_formats.X.toString(), string, i);

   224 }

   225 

   226 function d3_time_parseFullYear(date, string, i) {

   227   d3_time_numberRe.lastIndex = 0;

   228   var n = d3_time_numberRe.exec(string.substring(i, i + 4));

   229   return n ? (date.setFullYear(n[0]), i += n[0].length) : -1;

   230 }

   231 

   232 function d3_time_parseYear(date, string, i) {

   233   d3_time_numberRe.lastIndex = 0;

   234   var n = d3_time_numberRe.exec(string.substring(i, i + 2));

   235   return n ? (date.setFullYear(d3_time_century() + +n[0]), i += n[0].length) : -1;

   236 }

   237 

   238 function d3_time_century() {

   239   return ~~(new Date().getFullYear() / 1000) * 1000;

   240 }

   241 

   242 function d3_time_parseMonthNumber(date, string, i) {

   243   d3_time_numberRe.lastIndex = 0;

   244   var n = d3_time_numberRe.exec(string.substring(i, i + 2));

   245   return n ? (date.setMonth(n[0] - 1), i += n[0].length) : -1;

   246 }

   247 

   248 function d3_time_parseDay(date, string, i) {

   249   d3_time_numberRe.lastIndex = 0;

   250   var n = d3_time_numberRe.exec(string.substring(i, i + 2));

   251   return n ? (date.setDate(+n[0]), i += n[0].length) : -1;

   252 }

   253 

   254 // Note: we don't validate that the hour is in the range [0,23].

   255 function d3_time_parseHour24(date, string, i) {

   256   d3_time_numberRe.lastIndex = 0;

   257   var n = d3_time_numberRe.exec(string.substring(i, i + 2));

   258   return n ? (date.setHours(+n[0]), i += n[0].length) : -1;

   259 }

   260 

   261 // Note: we don't validate that the hour is in the range [1,12].

   262 function d3_time_parseHour12(date, string, i) {

   263   date.hour12 = true;

   264   return d3_time_parseHour24(date, string, i);

   265 }

   266 

   267 function d3_time_parseMinutes(date, string, i) {

   268   d3_time_numberRe.lastIndex = 0;

   269   var n = d3_time_numberRe.exec(string.substring(i, i + 2));

   270   return n ? (date.setMinutes(+n[0]), i += n[0].length) : -1;

   271 }

   272 

   273 function d3_time_parseSeconds(date, string, i) {

   274   d3_time_numberRe.lastIndex = 0;

   275   var n = d3_time_numberRe.exec(string.substring(i, i + 2));

   276   return n ? (date.setSeconds(+n[0]), i += n[0].length) : -1;

   277 }

   278 

   279 function d3_time_parseMilliseconds(date, string, i) {

   280   d3_time_numberRe.lastIndex = 0;

   281   var n = d3_time_numberRe.exec(string.substring(i, i + 3));

   282   return n ? (date.setMilliseconds(+n[0]), i += n[0].length) : -1;

   283 }

   284 

   285 // Note: we don't look at the next directive.

   286 var d3_time_numberRe = /\s*\d+/;

   287 

   288 function d3_time_parseAmPm(date, string, i) {

   289   var n = d3_time_amPmLookup[string.substring(i, i += 2).toLowerCase()];

   290   return n == null ? -1 : (date.hour12pm = n, i);

   291 }

   292 

   293 var d3_time_amPmLookup = {

   294   am: 0,

   295   pm: 1

   296 };

   297 

   298 function d3_time_year(d) {

   299   return new d3_time(d.getFullYear(), 0, 1);

   300 }

   301 

   302 function d3_time_daysElapsed(d0, d1) {

   303   return ~~((d1 - d0) / 864e5 - (d1.getTimezoneOffset() - d0.getTimezoneOffset()) / 1440);

   304 }

   305 

   306 function d3_time_dayOfYear(d) {

   307   return d3_time_zfill3(1 + d3_time_daysElapsed(d3_time_year(d), d));

   308 }

   309 

   310 function d3_time_weekNumberSunday(d) {

   311   var d0 = d3_time_year(d);

   312   return d3_time_zfill2(~~((d3_time_daysElapsed(d0, d) + d0.getDay()) / 7));

   313 }

   314 

   315 function d3_time_weekNumberMonday(d) {

   316   var d0 = d3_time_year(d);

   317   return d3_time_zfill2(~~((d3_time_daysElapsed(d0, d) + (d0.getDay() + 6) % 7) / 7));

   318 }

   319 

   320 // TODO table of time zone offset names?

   321 function d3_time_zone(d) {

   322   var z = d.getTimezoneOffset(),

   323       zs = z > 0 ? "-" : "+",

   324       zh = ~~(Math.abs(z) / 60),

   325       zm = Math.abs(z) % 60;

   326   return zs + d3_time_zfill2(zh) + d3_time_zfill2(zm);

   327 }