path: root/external/globalize/globalize-runtime/number.js

/**
 * Globalize Runtime v1.1.0-rc.6
 *
 * http://github.com/jquery/globalize
 *
 * Copyright jQuery Foundation and other contributors
 * Released under the MIT license
 * http://jquery.org/license
 *
 * Date: 2015-11-18T10:38Z
 */
/*!
 * Globalize Runtime v1.1.0-rc.6 2015-11-18T10:38Z Released under the MIT license
 * http://git.io/TrdQbw
 */
(function( root, factory ) {

	// UMD returnExports
	if ( typeof define === "function" && define.amd ) {

		// AMD
		define([
			"../globalize-runtime"
		], factory );
	} else if ( typeof exports === "object" ) {

		// Node, CommonJS
		module.exports = factory( require( "../globalize-runtime" ) );
	} else {

		// Extend global
		factory( root.Globalize );
	}
}(this, function( Globalize ) {

var createError = Globalize._createError,
	regexpEscape = Globalize._regexpEscape,
	runtimeKey = Globalize._runtimeKey,
	stringPad = Globalize._stringPad,
	validateParameterType = Globalize._validateParameterType,
	validateParameterPresence = Globalize._validateParameterPresence,
	validateParameterTypeString = Globalize._validateParameterTypeString;


var createErrorUnsupportedFeature = function( feature ) {
	return createError( "E_UNSUPPORTED", "Unsupported {feature}.", {
		feature: feature
	});
};




var validateParameterTypeNumber = function( value, name ) {
	validateParameterType(
		value,
		name,
		value === undefined || typeof value === "number",
		"Number"
	);
};




/**
 * goupingSeparator( number, primaryGroupingSize, secondaryGroupingSize )
 *
 * @number [Number].
 *
 * @primaryGroupingSize [Number]
 *
 * @secondaryGroupingSize [Number]
 *
 * Return the formatted number with group separator.
 */
var numberFormatGroupingSeparator = function( number, primaryGroupingSize, secondaryGroupingSize ) {
	var index,
		currentGroupingSize = primaryGroupingSize,
		ret = "",
		sep = ",",
		switchToSecondary = secondaryGroupingSize ? true : false;

	number = String( number ).split( "." );
	index = number[ 0 ].length;

	while ( index > currentGroupingSize ) {
		ret = number[ 0 ].slice( index - currentGroupingSize, index ) +
			( ret.length ? sep : "" ) + ret;
		index -= currentGroupingSize;
		if ( switchToSecondary ) {
			currentGroupingSize = secondaryGroupingSize;
			switchToSecondary = false;
		}
	}

	number[ 0 ] = number[ 0 ].slice( 0, index ) + ( ret.length ? sep : "" ) + ret;
	return number.join( "." );
};




/**
 * integerFractionDigits( number, minimumIntegerDigits, minimumFractionDigits,
 * maximumFractionDigits, round, roundIncrement )
 *
 * @number [Number]
 *
 * @minimumIntegerDigits [Number]
 *
 * @minimumFractionDigits [Number]
 *
 * @maximumFractionDigits [Number]
 *
 * @round [Function]
 *
 * @roundIncrement [Function]
 *
 * Return the formatted integer and fraction digits.
 */
var numberFormatIntegerFractionDigits = function( number, minimumIntegerDigits, minimumFractionDigits, maximumFractionDigits, round,
	roundIncrement ) {

	// Fraction
	if ( maximumFractionDigits ) {

		// Rounding
		if ( roundIncrement ) {
			number = round( number, roundIncrement );

		// Maximum fraction digits
		} else {
			number = round( number, { exponent: -maximumFractionDigits } );
		}

		// Minimum fraction digits
		if ( minimumFractionDigits ) {
			number = String( number ).split( "." );
			number[ 1 ] = stringPad( number[ 1 ] || "", minimumFractionDigits, true );
			number = number.join( "." );
		}
	} else {
		number = round( number );
	}

	number = String( number );

	// Minimum integer digits
	if ( minimumIntegerDigits ) {
		number = number.split( "." );
		number[ 0 ] = stringPad( number[ 0 ], minimumIntegerDigits );
		number = number.join( "." );
	}

	return number;
};




/**
 * toPrecision( number, precision, round )
 *
 * @number (Number)
 *
 * @precision (Number) significant figures precision (not decimal precision).
 *
 * @round (Function)
 *
 * Return number.toPrecision( precision ) using the given round function.
 */
var numberToPrecision = function( number, precision, round ) {
	var roundOrder;

	// Get number at two extra significant figure precision.
	number = number.toPrecision( precision + 2 );

	// Then, round it to the required significant figure precision.
	roundOrder = Math.ceil( Math.log( Math.abs( number ) ) / Math.log( 10 ) );
	roundOrder -= precision;

	return round( number, { exponent: roundOrder } );
};




/**
 * toPrecision( number, minimumSignificantDigits, maximumSignificantDigits, round )
 *
 * @number [Number]
 *
 * @minimumSignificantDigits [Number]
 *
 * @maximumSignificantDigits [Number]
 *
 * @round [Function]
 *
 * Return the formatted significant digits number.
 */
var numberFormatSignificantDigits = function( number, minimumSignificantDigits, maximumSignificantDigits, round ) {
	var atMinimum, atMaximum;

	// Sanity check.
	if ( minimumSignificantDigits > maximumSignificantDigits ) {
		maximumSignificantDigits = minimumSignificantDigits;
	}

	atMinimum = numberToPrecision( number, minimumSignificantDigits, round );
	atMaximum = numberToPrecision( number, maximumSignificantDigits, round );

	// Use atMaximum only if it has more significant digits than atMinimum.
	number = +atMinimum === +atMaximum ? atMinimum : atMaximum;

	// Expand integer numbers, eg. 123e5 to 12300.
	number = ( +number ).toString( 10 );

	if ( ( /e/ ).test( number ) ) {
		throw createErrorUnsupportedFeature({
			feature: "integers out of (1e21, 1e-7)"
		});
	}

	// Add trailing zeros if necessary.
	if ( minimumSignificantDigits - number.replace( /^0+|\./g, "" ).length > 0 ) {
		number = number.split( "." );
		number[ 1 ] = stringPad( number[ 1 ] || "", minimumSignificantDigits - number[ 0 ].replace( /^0+/, "" ).length, true );
		number = number.join( "." );
	}

	return number;
};




/**
 * format( number, properties )
 *
 * @number [Number].
 *
 * @properties [Object] Output of number/format-properties.
 *
 * Return the formatted number.
 * ref: http://www.unicode.org/reports/tr35/tr35-numbers.html
 */
var numberFormat = function( number, properties ) {
	var infinitySymbol, maximumFractionDigits, maximumSignificantDigits, minimumFractionDigits,
	minimumIntegerDigits, minimumSignificantDigits, nanSymbol, nuDigitsMap, padding, prefix,
	primaryGroupingSize, pattern, ret, round, roundIncrement, secondaryGroupingSize, suffix,
	symbolMap;

	padding = properties[ 1 ];
	minimumIntegerDigits = properties[ 2 ];
	minimumFractionDigits = properties[ 3 ];
	maximumFractionDigits = properties[ 4 ];
	minimumSignificantDigits = properties[ 5 ];
	maximumSignificantDigits = properties[ 6 ];
	roundIncrement = properties[ 7 ];
	primaryGroupingSize = properties[ 8 ];
	secondaryGroupingSize = properties[ 9 ];
	round = properties[ 15 ];
	infinitySymbol = properties[ 16 ];
	nanSymbol = properties[ 17 ];
	symbolMap = properties[ 18 ];
	nuDigitsMap = properties[ 19 ];

	// NaN
	if ( isNaN( number ) ) {
		return nanSymbol;
	}

	if ( number < 0 ) {
		pattern = properties[ 12 ];
		prefix = properties[ 13 ];
		suffix = properties[ 14 ];
	} else {
		pattern = properties[ 11 ];
		prefix = properties[ 0 ];
		suffix = properties[ 10 ];
	}

	// Infinity
	if ( !isFinite( number ) ) {
		return prefix + infinitySymbol + suffix;
	}

	ret = prefix;

	// Percent
	if ( pattern.indexOf( "%" ) !== -1 ) {
		number *= 100;

	// Per mille
	} else if ( pattern.indexOf( "\u2030" ) !== -1 ) {
		number *= 1000;
	}

	// Significant digit format
	if ( !isNaN( minimumSignificantDigits * maximumSignificantDigits ) ) {
		number = numberFormatSignificantDigits( number, minimumSignificantDigits,
			maximumSignificantDigits, round );

	// Integer and fractional format
	} else {
		number = numberFormatIntegerFractionDigits( number, minimumIntegerDigits,
			minimumFractionDigits, maximumFractionDigits, round, roundIncrement );
	}

	// Remove the possible number minus sign
	number = number.replace( /^-/, "" );

	// Grouping separators
	if ( primaryGroupingSize ) {
		number = numberFormatGroupingSeparator( number, primaryGroupingSize,
			secondaryGroupingSize );
	}

	ret += number;

	// Scientific notation
	// TODO implement here

	// Padding/'([^']|'')+'|''|[.,\-+E%\u2030]/g
	// TODO implement here

	ret += suffix;

	return ret.replace( /('([^']|'')+'|'')|./g, function( character, literal ) {

		// Literals
		if ( literal ) {
			literal = literal.replace( /''/, "'" );
			if ( literal.length > 2 ) {
				literal = literal.slice( 1, -1 );
			}
			return literal;
		}

		// Symbols
		character = character.replace( /[.,\-+E%\u2030]/, function( symbol ) {
			return symbolMap[ symbol ];
		});

		// Numbering system
		if ( nuDigitsMap ) {
			character = character.replace( /[0-9]/, function( digit ) {
				return nuDigitsMap[ +digit ];
			});
		}

		return character;
	});
};




var numberFormatterFn = function( properties ) {
	return function numberFormatter( value ) {
		validateParameterPresence( value, "value" );
		validateParameterTypeNumber( value, "value" );

		return numberFormat( value, properties );
	};
};




/**
 * EBNF representation:
 *
 * number_pattern_re =        prefix_including_padding?
 *                            number
 *                            scientific_notation?
 *                            suffix?
 *
 * number =                   integer_including_group_separator fraction_including_decimal_separator
 *
 * integer_including_group_separator =
 *                            regexp([0-9,]*[0-9]+)
 *
 * fraction_including_decimal_separator =
 *                            regexp((\.[0-9]+)?)

 * prefix_including_padding = non_number_stuff
 *
 * scientific_notation =      regexp(E[+-]?[0-9]+)
 *
 * suffix =                   non_number_stuff
 *
 * non_number_stuff =         regexp([^0-9]*)
 *
 *
 * Regexp groups:
 *
 * 0: number_pattern_re
 * 1: prefix
 * 2: integer_including_group_separator fraction_including_decimal_separator
 * 3: integer_including_group_separator
 * 4: fraction_including_decimal_separator
 * 5: scientific_notation
 * 6: suffix
 */
var numberNumberRe = ( /^([^0-9]*)(([0-9,]*[0-9]+)(\.[0-9]+)?)(E[+-]?[0-9]+)?([^0-9]*)$/ );




/**
 * parse( value, properties )
 *
 * @value [String].
 *
 * @properties [Object] Parser properties is a reduced pre-processed cldr
 * data set returned by numberParserProperties().
 *
 * Return the parsed Number (including Infinity) or NaN when value is invalid.
 * ref: http://www.unicode.org/reports/tr35/tr35-numbers.html
 */
var numberParse = function( value, properties ) {
	var aux, infinitySymbol, invertedNuDigitsMap, invertedSymbolMap, localizedDigitRe,
		localizedSymbolsRe, negativePrefix, negativeSuffix, number, prefix, suffix;

	infinitySymbol = properties[ 0 ];
	invertedSymbolMap = properties[ 1 ];
	negativePrefix = properties[ 2 ];
	negativeSuffix = properties[ 3 ];
	invertedNuDigitsMap = properties[ 4 ];

	// Infinite number.
	if ( aux = value.match( infinitySymbol ) ) {

		number = Infinity;
		prefix = value.slice( 0, aux.length );
		suffix = value.slice( aux.length + 1 );

	// Finite number.
	} else {

		// TODO: Create it during setup, i.e., make it a property.
		localizedSymbolsRe = new RegExp(
			Object.keys( invertedSymbolMap ).map(function( localizedSymbol ) {
				return regexpEscape( localizedSymbol );
			}).join( "|" ),
			"g"
		);

		// Reverse localized symbols.
		value = value.replace( localizedSymbolsRe, function( localizedSymbol ) {
			return invertedSymbolMap[ localizedSymbol ];
		});

		// Reverse localized numbering system.
		if ( invertedNuDigitsMap ) {

			// TODO: Create it during setup, i.e., make it a property.
			localizedDigitRe = new RegExp(
				Object.keys( invertedNuDigitsMap ).map(function( localizedDigit ) {
					return regexpEscape( localizedDigit );
				}).join( "|" ),
				"g"
			);
			value = value.replace( localizedDigitRe, function( localizedDigit ) {
				return invertedNuDigitsMap[ localizedDigit ];
			});
		}

		// Add padding zero to leading decimal.
		if ( value.charAt( 0 ) === "." ) {
			value = "0" + value;
		}

		// Is it a valid number?
		value = value.match( numberNumberRe );
		if ( !value ) {

			// Invalid number.
			return NaN;
		}

		prefix = value[ 1 ];
		suffix = value[ 6 ];

		// Remove grouping separators.
		number = value[ 2 ].replace( /,/g, "" );

		// Scientific notation
		if ( value[ 5 ] ) {
			number += value[ 5 ];
		}

		number = +number;

		// Is it a valid number?
		if ( isNaN( number ) ) {

			// Invalid number.
			return NaN;
		}

		// Percent
		if ( value[ 0 ].indexOf( "%" ) !== -1 ) {
			number /= 100;
			suffix = suffix.replace( "%", "" );

		// Per mille
		} else if ( value[ 0 ].indexOf( "\u2030" ) !== -1 ) {
			number /= 1000;
			suffix = suffix.replace( "\u2030", "" );
		}
	}

	// Negative number
	// "If there is an explicit negative subpattern, it serves only to specify the negative prefix
	// and suffix. If there is no explicit negative subpattern, the negative subpattern is the
	// localized minus sign prefixed to the positive subpattern" UTS#35
	if ( prefix === negativePrefix && suffix === negativeSuffix ) {
		number *= -1;
	}

	return number;
};




var numberParserFn = function( properties ) {
	return function numberParser( value ) {
		validateParameterPresence( value, "value" );
		validateParameterTypeString( value, "value" );

		return numberParse( value, properties );
	};

};




var numberTruncate = function( value ) {
	if ( isNaN( value ) ) {
		return NaN;
	}
	return Math[ value < 0 ? "ceil" : "floor" ]( value );
};




/**
 * round( method )
 *
 * @method [String] with either "round", "ceil", "floor", or "truncate".
 *
 * Return function( value, incrementOrExp ):
 *
 *   @value [Number] eg. 123.45.
 *
 *   @incrementOrExp [Number] optional, eg. 0.1; or
 *     [Object] Either { increment: <value> } or { exponent: <value> }
 *
 *   Return the rounded number, eg:
 *   - round( "round" )( 123.45 ): 123;
 *   - round( "ceil" )( 123.45 ): 124;
 *   - round( "floor" )( 123.45 ): 123;
 *   - round( "truncate" )( 123.45 ): 123;
 *   - round( "round" )( 123.45, 0.1 ): 123.5;
 *   - round( "round" )( 123.45, 10 ): 120;
 *
 *   Based on https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/round
 *   Ref: #376
 */
var numberRound = function( method ) {
	method = method || "round";
	method = method === "truncate" ? numberTruncate : Math[ method ];

	return function( value, incrementOrExp ) {
		var exp, increment;

		value = +value;

		// If the value is not a number, return NaN.
		if ( isNaN( value ) ) {
			return NaN;
		}

		// Exponent given.
		if ( typeof incrementOrExp === "object" && incrementOrExp.exponent ) {
			exp = +incrementOrExp.exponent;
			increment = 1;

			if ( exp === 0 ) {
				return method( value );
			}

			// If the exp is not an integer, return NaN.
			if ( !( typeof exp === "number" && exp % 1 === 0 ) ) {
				return NaN;
			}

		// Increment given.
		} else {
			increment = +incrementOrExp || 1;

			if ( increment === 1 ) {
				return method( value );
			}

			// If the increment is not a number, return NaN.
			if ( isNaN( increment ) ) {
				return NaN;
			}

			increment = increment.toExponential().split( "e" );
			exp = +increment[ 1 ];
			increment = +increment[ 0 ];
		}

		// Shift & Round
		value = value.toString().split( "e" );
		value[ 0 ] = +value[ 0 ] / increment;
		value[ 1 ] = value[ 1 ] ? ( +value[ 1 ] - exp ) : -exp;
		value = method( +( value[ 0 ] + "e" + value[ 1 ] ) );

		// Shift back
		value = value.toString().split( "e" );
		value[ 0 ] = +value[ 0 ] * increment;
		value[ 1 ] = value[ 1 ] ? ( +value[ 1 ] + exp ) : exp;
		return +( value[ 0 ] + "e" + value[ 1 ] );
	};
};




Globalize._createErrorUnsupportedFeature = createErrorUnsupportedFeature;
Globalize._numberFormat = numberFormat;
Globalize._numberFormatterFn = numberFormatterFn;
Globalize._numberParse = numberParse;
Globalize._numberParserFn = numberParserFn;
Globalize._numberRound = numberRound;
Globalize._validateParameterPresence = validateParameterPresence;
Globalize._validateParameterTypeNumber = validateParameterTypeNumber;
Globalize._validateParameterTypeString = validateParameterTypeString;

Globalize.numberFormatter =
Globalize.prototype.numberFormatter = function( options ) {
	options = options || {};
	return Globalize[ runtimeKey( "numberFormatter", this._locale, [ options ] ) ];
};

Globalize.numberParser =
Globalize.prototype.numberParser = function( options ) {
	options = options || {};
	return Globalize[ runtimeKey( "numberParser", this._locale, [ options ] ) ];
};

Globalize.formatNumber =
Globalize.prototype.formatNumber = function( value, options ) {
	validateParameterPresence( value, "value" );
	validateParameterTypeNumber( value, "value" );

	return this.numberFormatter( options )( value );
};

Globalize.parseNumber =
Globalize.prototype.parseNumber = function( value, options ) {
	validateParameterPresence( value, "value" );
	validateParameterTypeString( value, "value" );

	return this.numberParser( options )( value );
};

return Globalize;




}));