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357
public/style/vendor/wnumb/wNumb.js
vendored
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357
public/style/vendor/wnumb/wNumb.js
vendored
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(function (factory) {
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if ( typeof define === 'function' && define.amd ) {
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// AMD. Register as an anonymous module.
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define([], factory);
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} else if ( typeof exports === 'object' ) {
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// Node/CommonJS
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module.exports = factory();
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} else {
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// Browser globals
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window.wNumb = factory();
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}
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}(function(){
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'use strict';
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var FormatOptions = [
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'decimals',
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'thousand',
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'mark',
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'prefix',
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'suffix',
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'encoder',
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'decoder',
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'negativeBefore',
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'negative',
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'edit',
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'undo'
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];
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// General
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// Reverse a string
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function strReverse ( a ) {
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return a.split('').reverse().join('');
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}
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// Check if a string starts with a specified prefix.
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function strStartsWith ( input, match ) {
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return input.substring(0, match.length) === match;
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}
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// Check is a string ends in a specified suffix.
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function strEndsWith ( input, match ) {
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return input.slice(-1 * match.length) === match;
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}
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// Throw an error if formatting options are incompatible.
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function throwEqualError( F, a, b ) {
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if ( (F[a] || F[b]) && (F[a] === F[b]) ) {
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throw new Error(a);
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}
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}
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// Check if a number is finite and not NaN
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function isValidNumber ( input ) {
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return typeof input === 'number' && isFinite( input );
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}
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// Provide rounding-accurate toFixed method.
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// Borrowed: http://stackoverflow.com/a/21323330/775265
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function toFixed ( value, exp ) {
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value = value.toString().split('e');
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value = Math.round(+(value[0] + 'e' + (value[1] ? (+value[1] + exp) : exp)));
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value = value.toString().split('e');
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return (+(value[0] + 'e' + (value[1] ? (+value[1] - exp) : -exp))).toFixed(exp);
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}
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// Formatting
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// Accept a number as input, output formatted string.
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function formatTo ( decimals, thousand, mark, prefix, suffix, encoder, decoder, negativeBefore, negative, edit, undo, input ) {
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var originalInput = input, inputIsNegative, inputPieces, inputBase, inputDecimals = '', output = '';
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// Apply user encoder to the input.
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// Expected outcome: number.
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if ( encoder ) {
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input = encoder(input);
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}
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// Stop if no valid number was provided, the number is infinite or NaN.
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if ( !isValidNumber(input) ) {
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return false;
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}
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// Rounding away decimals might cause a value of -0
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// when using very small ranges. Remove those cases.
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if ( decimals !== false && parseFloat(input.toFixed(decimals)) === 0 ) {
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input = 0;
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}
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// Formatting is done on absolute numbers,
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// decorated by an optional negative symbol.
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if ( input < 0 ) {
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inputIsNegative = true;
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input = Math.abs(input);
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}
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// Reduce the number of decimals to the specified option.
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if ( decimals !== false ) {
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input = toFixed( input, decimals );
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}
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// Transform the number into a string, so it can be split.
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input = input.toString();
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// Break the number on the decimal separator.
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if ( input.indexOf('.') !== -1 ) {
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inputPieces = input.split('.');
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inputBase = inputPieces[0];
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if ( mark ) {
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inputDecimals = mark + inputPieces[1];
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}
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} else {
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// If it isn't split, the entire number will do.
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inputBase = input;
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}
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// Group numbers in sets of three.
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if ( thousand ) {
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inputBase = strReverse(inputBase).match(/.{1,3}/g);
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inputBase = strReverse(inputBase.join( strReverse( thousand ) ));
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}
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// If the number is negative, prefix with negation symbol.
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if ( inputIsNegative && negativeBefore ) {
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output += negativeBefore;
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}
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// Prefix the number
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if ( prefix ) {
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output += prefix;
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}
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// Normal negative option comes after the prefix. Defaults to '-'.
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if ( inputIsNegative && negative ) {
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output += negative;
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}
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// Append the actual number.
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output += inputBase;
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output += inputDecimals;
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// Apply the suffix.
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if ( suffix ) {
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output += suffix;
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}
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// Run the output through a user-specified post-formatter.
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if ( edit ) {
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output = edit ( output, originalInput );
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}
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// All done.
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return output;
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}
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// Accept a sting as input, output decoded number.
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function formatFrom ( decimals, thousand, mark, prefix, suffix, encoder, decoder, negativeBefore, negative, edit, undo, input ) {
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var originalInput = input, inputIsNegative, output = '';
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// User defined pre-decoder. Result must be a non empty string.
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if ( undo ) {
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input = undo(input);
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}
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// Test the input. Can't be empty.
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if ( !input || typeof input !== 'string' ) {
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return false;
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}
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// If the string starts with the negativeBefore value: remove it.
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// Remember is was there, the number is negative.
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if ( negativeBefore && strStartsWith(input, negativeBefore) ) {
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input = input.replace(negativeBefore, '');
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inputIsNegative = true;
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}
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// Repeat the same procedure for the prefix.
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if ( prefix && strStartsWith(input, prefix) ) {
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input = input.replace(prefix, '');
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}
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// And again for negative.
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if ( negative && strStartsWith(input, negative) ) {
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input = input.replace(negative, '');
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inputIsNegative = true;
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}
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// Remove the suffix.
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// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/slice
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if ( suffix && strEndsWith(input, suffix) ) {
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input = input.slice(0, -1 * suffix.length);
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}
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// Remove the thousand grouping.
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if ( thousand ) {
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input = input.split(thousand).join('');
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}
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// Set the decimal separator back to period.
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if ( mark ) {
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input = input.replace(mark, '.');
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}
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// Prepend the negative symbol.
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if ( inputIsNegative ) {
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output += '-';
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}
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// Add the number
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output += input;
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// Trim all non-numeric characters (allow '.' and '-');
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output = output.replace(/[^0-9\.\-.]/g, '');
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// The value contains no parse-able number.
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if ( output === '' ) {
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return false;
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}
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// Covert to number.
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output = Number(output);
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// Run the user-specified post-decoder.
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if ( decoder ) {
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output = decoder(output);
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}
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// Check is the output is valid, otherwise: return false.
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if ( !isValidNumber(output) ) {
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return false;
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}
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return output;
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}
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// Framework
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// Validate formatting options
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function validate ( inputOptions ) {
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var i, optionName, optionValue,
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filteredOptions = {};
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if ( inputOptions['suffix'] === undefined ) {
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inputOptions['suffix'] = inputOptions['postfix'];
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}
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for ( i = 0; i < FormatOptions.length; i+=1 ) {
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optionName = FormatOptions[i];
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optionValue = inputOptions[optionName];
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if ( optionValue === undefined ) {
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// Only default if negativeBefore isn't set.
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if ( optionName === 'negative' && !filteredOptions.negativeBefore ) {
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filteredOptions[optionName] = '-';
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// Don't set a default for mark when 'thousand' is set.
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} else if ( optionName === 'mark' && filteredOptions.thousand !== '.' ) {
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filteredOptions[optionName] = '.';
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} else {
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filteredOptions[optionName] = false;
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}
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// Floating points in JS are stable up to 7 decimals.
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} else if ( optionName === 'decimals' ) {
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if ( optionValue >= 0 && optionValue < 8 ) {
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filteredOptions[optionName] = optionValue;
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} else {
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throw new Error(optionName);
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}
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// These options, when provided, must be functions.
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} else if ( optionName === 'encoder' || optionName === 'decoder' || optionName === 'edit' || optionName === 'undo' ) {
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if ( typeof optionValue === 'function' ) {
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filteredOptions[optionName] = optionValue;
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} else {
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throw new Error(optionName);
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}
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// Other options are strings.
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} else {
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if ( typeof optionValue === 'string' ) {
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filteredOptions[optionName] = optionValue;
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} else {
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throw new Error(optionName);
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}
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}
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}
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// Some values can't be extracted from a
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// string if certain combinations are present.
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throwEqualError(filteredOptions, 'mark', 'thousand');
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throwEqualError(filteredOptions, 'prefix', 'negative');
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throwEqualError(filteredOptions, 'prefix', 'negativeBefore');
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return filteredOptions;
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}
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// Pass all options as function arguments
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function passAll ( options, method, input ) {
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var i, args = [];
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// Add all options in order of FormatOptions
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for ( i = 0; i < FormatOptions.length; i+=1 ) {
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args.push(options[FormatOptions[i]]);
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}
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// Append the input, then call the method, presenting all
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// options as arguments.
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args.push(input);
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return method.apply('', args);
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}
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function wNumb ( options ) {
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if ( !(this instanceof wNumb) ) {
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return new wNumb ( options );
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}
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if ( typeof options !== "object" ) {
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return;
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}
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options = validate(options);
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// Call 'formatTo' with proper arguments.
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this.to = function ( input ) {
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return passAll(options, formatTo, input);
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};
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// Call 'formatFrom' with proper arguments.
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this.from = function ( input ) {
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return passAll(options, formatFrom, input);
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};
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}
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return wNumb;
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}));
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