93 lines
3.8 KiB
JavaScript
93 lines
3.8 KiB
JavaScript
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/*! Parser: metric *//*
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* Demo: http://jsfiddle.net/Mottie/abkNM/382/
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* Set the metric name in the header (defaults to 'm|meter'), e.g.
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* <th data-metric-name-abbr="b|B" data-metric-name-full="byte|Byte|BYTE">HDD Size</th>
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* <th data-metric-name="m|meter">Distance</th> <!-- data-metric-name is deprecated in v2.22.2 -->
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*/
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/*jshint jquery:true */
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;( function( $ ) {
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'use strict';
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var prefixes = {
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// 'prefix' : [ base 10, base 2 ]
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// skipping IEEE 1541 defined prefixes: kibibyte, mebibyte, etc, for now.
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'Y|Yotta|yotta' : [ 1e24, Math.pow(1024, 8) ], // 1024^8
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'Z|Zetta|zetta' : [ 1e21, Math.pow(1024, 7) ], // 1024^7
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'E|Exa|exa' : [ 1e18, Math.pow(1024, 6) ], // 1024^6
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'P|Peta|peta' : [ 1e15, Math.pow(1024, 5) ], // 1024^5
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'T|Tera|tera' : [ 1e12, Math.pow(1024, 4) ], // 1024^4
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'G|Giga|giga' : [ 1e9, Math.pow(1024, 3) ], // 1024^3
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'M|Mega|mega' : [ 1e6, Math.pow(1024, 2) ], // 1024^2
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'k|Kilo|kilo' : [ 1e3, 1024 ], // 1024
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// prefixes below here are rarely, if ever, used in binary
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'h|hecto' : [ 1e2, 1e2 ],
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'da|deka' : [ 1e1, 1e1 ],
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'd|deci' : [ 1e-1, 1e-1 ],
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'c|centi' : [ 1e-2, 1e-2 ],
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'm|milli' : [ 1e-3, 1e-3 ],
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'µ|micro' : [ 1e-6, 1e-6 ],
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'n|nano' : [ 1e-9, 1e-9 ],
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'p|pico' : [ 1e-12, 1e-12 ],
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'f|femto' : [ 1e-15, 1e-15 ],
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'a|atto' : [ 1e-18, 1e-18 ],
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'z|zepto' : [ 1e-21, 1e-21 ],
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'y|yocto' : [ 1e-24, 1e-24 ]
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},
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// the \\d+ will not catch digits with spaces, commas or decimals; so use the value from n instead
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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)(',
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RegAbbr = '(\\d+)(\\s+)?(Z|E|P|T|G|M|k|h|da|d|c|m|µ|n|p|f|a|z|y)(',
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// make these case-insensitive because we all forget the case for these binary values
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byteTest = /^[b|bit|byte|o|octet]/i;
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$.tablesorter.addParser({
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id: 'metric',
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is: function() {
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return false;
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},
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format: function(txt, table, cell, cellIndex) {
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var unit, isBinary, nameLong, nameAbbr,
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// default base unit name
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base = 'm|meter',
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// process number here to get a numerical format (us or eu)
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num = $.tablesorter.formatFloat( txt.replace(/[^\w,. \-()]/g, ''), table ),
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$t = table.config.$headerIndexed[ cellIndex ],
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regex = $t.data( 'metric' );
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if ( !regex ) {
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// stored values
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unit = ( $t.attr('data-metric-name') || base ).split( '|' );
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nameLong = $t.attr( 'data-metric-name-full' ) || '';
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nameAbbr = $t.attr( 'data-metric-name-abbr' ) || '';
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regex = [ nameLong || unit[1] || unit[0].substring(1), nameAbbr || unit[0] ];
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isBinary = byteTest.test( regex.join( '' ) );
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// adding 'data-metric-name-full' which would contain 'byte|BYTE|Byte' etc
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regex[2] = new RegExp( RegLong + (
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( nameLong === '' ? '' : nameLong + '|' + nameAbbr ) ||
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// with data-metric-name='b|byte', we end up with 'b|B|byte|BYTE' - maybe not the best solution for case-insensitivity
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( ( isBinary ? regex[0].toLowerCase() + '|' + regex[0].toUpperCase() : regex[0] ) + '|' +
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( isBinary ? regex[1].toLowerCase() + '|' + regex[1].toUpperCase() : regex[1] ) ) ) +
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')' );
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// adding 'data-metric-name-abbr' which would contain 'b|B' etc
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regex[3] = new RegExp( RegAbbr + ( nameAbbr ||
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( ( isBinary ? regex[1].toLowerCase() + '|' + regex[1].toUpperCase() : regex[1] ) ) ) +
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')' );
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$t.data( 'metric', regex );
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}
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// find match to full name or abbreviation
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unit = txt.match( regex[2] ) || txt.match( regex[3] );
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if ( unit ) {
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for ( base in prefixes ) {
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if ( unit[3].match( base ) ) {
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// exception when using binary prefix
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// change base for binary use
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isBinary = byteTest.test( unit[4] ) ? 1 : 0;
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return num * prefixes[ base ][ isBinary ];
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}
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}
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}
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return num;
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},
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type: 'numeric'
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});
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})(jQuery);
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