sjs/strftime
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reduce the code by about half using replace

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Sami Samhuri 2010-11-11 13:22:10 -08:00
parent f832767c6c
commit caec43bebd
3 changed files with 64 additions and 133 deletions
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2
Readme.md
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@ -14,7 +14,7 @@ Usage
=====
var strftime = require('strftime').strftime
console.log(strftime('%D-%M-%Y %H:%M:%S'))
console.log(strftime('%d-%m-%y %H:%M:%S')) // => 11-11-2010 13:24:17
For details just see `man 3 strftime` as the format specifiers are identical.

193
lib/index.js
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@ -5,146 +5,77 @@
/// Copyright 2010 Sami Samhuri <sami.samhuri@gmail.com>
/// MIT License
var Weekdays = ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday',
'Friday', 'Saturday'];
var strftime = (function() {
var Weekdays = ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday',
'Friday', 'Saturday'];
var WeekdaysShort = ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'];
var Months = ['January', 'February', 'March', 'April', 'May', 'June', 'July',
'August', 'September', 'October', 'November', 'December'];
var MonthsShort = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug',
'Sep', 'Oct', 'Nov', 'Dec'];
if (typeof exports !== 'undefined') exports.strftime = strftime
// Most of the specifiers supported by C's strftime
function strftime(fmt, d) {
var c,
i,
n = fmt.length,
s = '',
pad = function(n, padding) {
padding = padding || '0';
return n < 10 ? (padding + n) : n;
};
d || (d = new Date())
for (i = 0; i < n; ++i) {
c = fmt.charAt(i);
if (c == '%') {
i += 1;
c = fmt.charAt(i);
var WeekdaysShort = ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'];
var Months = ['January', 'February', 'March', 'April', 'May', 'June', 'July',
'August', 'September', 'October', 'November', 'December'];
var MonthsShort = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug',
'Sep', 'Oct', 'Nov', 'Dec'];
function pad(n, padding) {
padding = padding || '0';
return n < 10 ? (padding + n) : n;
}
function hours12(d) {
var hour = d.getHours();
if (hour == 0) hour = 12;
else if (hour > 12) hour -= 12;
return hour;
}
// Most of the specifiers supported by C's strftime
function strftime(fmt, d) {
d || (d = new Date());
return fmt.replace(/%(.)/g, function(_, c) {
switch (c) {
case 'A':
s += Weekdays[d.getDay()];
break;
case 'a':
s += WeekdaysShort[d.getDay()];
break;
case 'B':
s += Months[d.getMonth()];
break;
case 'b':
case 'h':
s += MonthsShort[d.getMonth()];
break;
case 'D':
s += strftime(d, '%m/%d/%y');
break;
case 'd':
var day = d.getDate();
s += pad(day);
break;
case 'e':
s += d.getDate();
break;
case 'F':
s += strftime(d, '%Y-%m-%d');
break;
case 'H':
var hour = d.getHours();
s += pad(hour);
break;
case 'I':
var hour = d.getHours();
if (hour == 0) hour = 12;
else if (hour > 12) hour -= 12;
s += pad(hour);
break;
case 'k':
var hour = d.getHours();
s += pad(hour, ' ');
break;
case 'l':
var hour = d.getHours();
if (hour == 0) hour = 12;
else if (hour > 12) hour -= 12;
s += pad(hour, ' ');
break;
case 'M':
var min = d.getMinutes();
s += pad(min);
break;
case 'm':
var month = d.getMonth() + 1;
s += pad(month);
break;
case 'n':
s += '\n';
break;
case 'p':
s += d.getHours() < 12 ? 'AM' : 'PM';
break;
case 'R':
s += strftime(d, '%H:%M');
break;
case 'r':
s += strftime(d, '%I:%M:%S %p');
break;
case 'S':
s += pad(d.getSeconds());
break;
case 's':
s += d.getTime();
break;
case 'T':
s += strftime(d, '%H:%M:%S');
break;
case 't':
s += '\t';
break;
case 'A': return Weekdays[d.getDay()];
case 'a': return WeekdaysShort[d.getDay()];
case 'B': return Months[d.getMonth()];
case 'b': // fall through
case 'h': return MonthsShort[d.getMonth()];
case 'D': return strftime(d, '%m/%d/%y');
case 'd': return pad(d.getDate());
case 'e': return d.getDate();
case 'F': return strftime(d, '%Y-%m-%d');
case 'H': return pad(d.getHours());
case 'I': return pad(hours12(d));
case 'k': return pad(d.getHours(), ' ');
case 'l': return pad(hours12(d), ' ');
case 'M': return pad(d.getMinutes());
case 'm': return pad(d.getMonth() + 1);
case 'n': return '\n';
case 'p': return d.getHours() < 12 ? 'AM' : 'PM';
case 'R': return strftime(d, '%H:%M');
case 'r': return strftime(d, '%I:%M:%S %p');
case 'S': return pad(d.getSeconds());
case 's': return d.getTime();
case 'T': return strftime(d, '%H:%M:%S');
case 't': return '\t';
case 'u':
var day = d.getDay();
s += day == 0 ? 7 : day; // 1 - 7, Monday is first day of the week
break;
case 'v':
s += strftime(d, '%e-%b-%Y');
break;
case 'w':
s += d.getDay(); // 0 - 6, Sunday is first day of the week
break;
case 'Y':
s += d.getFullYear();
break;
return day == 0 ? 7 : day; // 1 - 7, Monday is first day of the week
case 'v': return strftime(d, '%e-%b-%Y');
case 'w': return d.getDay(); // 0 - 6, Sunday is first day of the week
case 'Y': return d.getFullYear();
case 'y':
var year = d.getYear();
s += year < 100 ? year : year - 100;
break;
return year < 100 ? year : year - 100;
case 'Z':
var tz = d.toString().match(/\((\w+)\)/);
s += tz && tz[1] || '';
break;
return tz && tz[1] || '';
case 'z':
var off = d.getTimezoneOffset();
s += (off < 0 ? '-' : '+') + pad(off / 60) + pad(off % 60);
break;
default:
s += c;
break;
return (off < 0 ? '-' : '+') + pad(off / 60) + pad(off % 60);
default: return c;
}
} else {
s += c;
}
});
}
return s;
}
}());
if (typeof exports !== 'undefined') exports.strftime = strftime;

2
package.json
View file

@ -1,6 +1,6 @@
{ "name" : "strftime"
, "description" : "strftime for JavaScript"
, "version" : "0.1"
, "version" : "0.2.0"
, "homepage" : "http://samhuri.net/node/strftime"
, "author" : "Sami Samhuri <sami.samhuri@gmail.com>"
, "repository" :