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lorchess.ru/assets/js/parsers/parser-metric.js
Vladimir Hodakov 15b8f3a13e
Revive site from the unmaintainable state
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archive.
2018-10-28 17:59:15 +04:00

78 lines
2.7 KiB
JavaScript

/*! Metric parser
* Demo: http://jsfiddle.net/Mottie/abkNM/382/
* Set the metric name in the header (defaults to "m|meter"), e.g.
* <th data-metric-name="b|byte">HDD Size</th>
* <th data-metric-name="m|meter">Distance</th>
*/
/*jshint jquery:true */
;(function($){
"use strict";
var prefixes = {
// "prefix" : [ base 10, base 2 ]
// skipping IEEE 1541 defined prefixes: kibibyte, mebibyte, etc, for now.
"Y|Yotta|yotta" : [ 1e24, Math.pow(1024, 8) ], // 1024^8
"Z|Zetta|zetta" : [ 1e21, Math.pow(1024, 7) ], // 1024^7
"E|Exa|exa" : [ 1e18, Math.pow(1024, 6) ], // 1024^6
"P|Peta|peta" : [ 1e15, Math.pow(1024, 5) ], // 1024^5
"T|Tera|tera" : [ 1e12, Math.pow(1024, 4) ], // 1024^4
"G|Giga|giga" : [ 1e9, Math.pow(1024, 3) ], // 1024^3
"M|Mega|mega" : [ 1e6, Math.pow(1024, 2) ], // 1024^2
"k|Kilo|kilo" : [ 1e3, 1024 ], // 1024
// prefixes below here are rarely, if ever, used in binary
"h|hecto" : [ 1e2, 1e2 ],
"da|deka" : [ 1e1, 1e1 ],
"d|deci" : [ 1e-1, 1e-1 ],
"c|centi" : [ 1e-2, 1e-2],
"m|milli" : [ 1e-3, 1e-3 ],
"µ|micro" : [ 1e-6, 1e-6 ],
"n|nano" : [ 1e-9, 1e-9 ],
"p|pico" : [ 1e-12, 1e-12 ],
"f|femto" : [ 1e-15, 1e-15 ],
"a|atto" : [ 1e-18, 1e-18 ],
"z|zepto" : [ 1e-21, 1e-21 ],
"y|yocto" : [ 1e-24, 1e-24 ]
},
// the \\d+ will not catch digits with spaces, commas or decimals; so use the value from n instead
RegLong = "(\\d+)(\\s+)?([Zz]etta|[Ee]xa|[Pp]eta|[Tt]era|[Gg]iga|[Mm]ega|kilo|hecto|deka|deci|centi|milli|micro|nano|pico|femto|atto|zepto|yocto)(",
RegAbbr = "(\\d+)(\\s+)?(Z|E|P|T|G|M|k|h|da|d|c|m|µ|n|p|f|a|z|y)(";
$.tablesorter.addParser({
id: 'metric',
is: function() {
return false;
},
format: function(s, table, cell, cellIndex) {
var v = 'm|meter',
b, t,
// process number here to get a numerical format (us or eu)
n = $.tablesorter.formatFloat(s.replace(/[^\w,. \-()]/g, ""), table),
$t = table.config.$headers.filter('[data-column="' + cellIndex + '"]'),
m = $t.data('metric');
if (!m) {
// stored values
t = ($t.attr('data-metric-name') || v).split('|');
m = [ t[1] || t[0].substring(1), t[0] ];
m[2] = new RegExp(RegLong + m[0] + "|" + m[1] + ")");
m[3] = new RegExp(RegAbbr + m[1] + ")");
$t.data('metric', m);
}
// find match to full name or abbreviation
t = s.match(m[2]) || s.match(m[3]);
if (t) {
for (v in prefixes) {
if (t[3].match(v)) {
// exception when using binary prefix
// change base for binary use
b = /^[b|bit|byte|o|octet]/.test(t[4]) ? 1 : 0;
return n * prefixes[v][b];
}
}
}
return n;
},
type: 'numeric'
});
})(jQuery);