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585 lines
21 KiB
JavaScript
585 lines
21 KiB
JavaScript
/*
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Copyright (c) 2004-2010, The Dojo Foundation All Rights Reserved.
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Available via Academic Free License >= 2.1 OR the modified BSD license.
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see: http://dojotoolkit.org/license for details
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*/
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if(!dojo._hasResource["dojo.number"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
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dojo._hasResource["dojo.number"] = true;
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dojo.provide("dojo.number");
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dojo.require("dojo.i18n");
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dojo.requireLocalization("dojo.cldr", "number", null, "ROOT,ar,ca,cs,da,de,el,en,en-au,en-gb,es,fi,fr,he,hu,it,ja,ko,nb,nl,pl,pt,pt-pt,ru,sk,sl,sv,th,tr,zh");
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dojo.require("dojo.string");
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dojo.require("dojo.regexp");
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/*=====
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dojo.number = {
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// summary: localized formatting and parsing routines for Number
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}
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dojo.number.__FormatOptions = function(){
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// pattern: String?
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// override [formatting pattern](http://www.unicode.org/reports/tr35/#Number_Format_Patterns)
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// with this string. Default value is based on locale. Overriding this property will defeat
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// localization. Literal characters in patterns are not supported.
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// type: String?
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// choose a format type based on the locale from the following:
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// decimal, scientific (not yet supported), percent, currency. decimal by default.
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// places: Number?
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// fixed number of decimal places to show. This overrides any
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// information in the provided pattern.
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// round: Number?
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// 5 rounds to nearest .5; 0 rounds to nearest whole (default). -1
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// means do not round.
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// locale: String?
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// override the locale used to determine formatting rules
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// fractional: Boolean?
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// If false, show no decimal places, overriding places and pattern settings.
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this.pattern = pattern;
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this.type = type;
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this.places = places;
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this.round = round;
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this.locale = locale;
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this.fractional = fractional;
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}
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=====*/
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dojo.number.format = function(/*Number*/value, /*dojo.number.__FormatOptions?*/options){
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// summary:
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// Format a Number as a String, using locale-specific settings
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// description:
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// Create a string from a Number using a known localized pattern.
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// Formatting patterns appropriate to the locale are chosen from the
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// [Common Locale Data Repository](http://unicode.org/cldr) as well as the appropriate symbols and
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// delimiters.
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// If value is Infinity, -Infinity, or is not a valid JavaScript number, return null.
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// value:
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// the number to be formatted
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options = dojo.mixin({}, options || {});
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var locale = dojo.i18n.normalizeLocale(options.locale),
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bundle = dojo.i18n.getLocalization("dojo.cldr", "number", locale);
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options.customs = bundle;
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var pattern = options.pattern || bundle[(options.type || "decimal") + "Format"];
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if(isNaN(value) || Math.abs(value) == Infinity){ return null; } // null
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return dojo.number._applyPattern(value, pattern, options); // String
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};
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//dojo.number._numberPatternRE = /(?:[#0]*,?)*[#0](?:\.0*#*)?/; // not precise, but good enough
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dojo.number._numberPatternRE = /[#0,]*[#0](?:\.0*#*)?/; // not precise, but good enough
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dojo.number._applyPattern = function(/*Number*/value, /*String*/pattern, /*dojo.number.__FormatOptions?*/options){
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// summary:
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// Apply pattern to format value as a string using options. Gives no
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// consideration to local customs.
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// value:
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// the number to be formatted.
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// pattern:
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// a pattern string as described by
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// [unicode.org TR35](http://www.unicode.org/reports/tr35/#Number_Format_Patterns)
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// options: dojo.number.__FormatOptions?
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// _applyPattern is usually called via `dojo.number.format()` which
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// populates an extra property in the options parameter, "customs".
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// The customs object specifies group and decimal parameters if set.
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//TODO: support escapes
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options = options || {};
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var group = options.customs.group,
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decimal = options.customs.decimal,
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patternList = pattern.split(';'),
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positivePattern = patternList[0];
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pattern = patternList[(value < 0) ? 1 : 0] || ("-" + positivePattern);
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//TODO: only test against unescaped
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if(pattern.indexOf('%') != -1){
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value *= 100;
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}else if(pattern.indexOf('\u2030') != -1){
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value *= 1000; // per mille
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}else if(pattern.indexOf('\u00a4') != -1){
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group = options.customs.currencyGroup || group;//mixins instead?
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decimal = options.customs.currencyDecimal || decimal;// Should these be mixins instead?
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pattern = pattern.replace(/\u00a4{1,3}/, function(match){
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var prop = ["symbol", "currency", "displayName"][match.length-1];
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return options[prop] || options.currency || "";
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});
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}else if(pattern.indexOf('E') != -1){
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throw new Error("exponential notation not supported");
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}
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//TODO: support @ sig figs?
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var numberPatternRE = dojo.number._numberPatternRE;
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var numberPattern = positivePattern.match(numberPatternRE);
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if(!numberPattern){
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throw new Error("unable to find a number expression in pattern: "+pattern);
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}
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if(options.fractional === false){ options.places = 0; }
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return pattern.replace(numberPatternRE,
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dojo.number._formatAbsolute(value, numberPattern[0], {decimal: decimal, group: group, places: options.places, round: options.round}));
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}
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dojo.number.round = function(/*Number*/value, /*Number?*/places, /*Number?*/increment){
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// summary:
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// Rounds to the nearest value with the given number of decimal places, away from zero
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// description:
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// Rounds to the nearest value with the given number of decimal places, away from zero if equal.
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// Similar to Number.toFixed(), but compensates for browser quirks. Rounding can be done by
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// fractional increments also, such as the nearest quarter.
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// NOTE: Subject to floating point errors. See dojox.math.round for experimental workaround.
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// value:
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// The number to round
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// places:
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// The number of decimal places where rounding takes place. Defaults to 0 for whole rounding.
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// Must be non-negative.
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// increment:
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// Rounds next place to nearest value of increment/10. 10 by default.
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// example:
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// >>> dojo.number.round(-0.5)
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// -1
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// >>> dojo.number.round(162.295, 2)
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// 162.29 // note floating point error. Should be 162.3
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// >>> dojo.number.round(10.71, 0, 2.5)
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// 10.75
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var factor = 10 / (increment || 10);
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return (factor * +value).toFixed(places) / factor; // Number
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}
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if((0.9).toFixed() == 0){
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// (isIE) toFixed() bug workaround: Rounding fails on IE when most significant digit
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// is just after the rounding place and is >=5
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(function(){
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var round = dojo.number.round;
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dojo.number.round = function(v, p, m){
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var d = Math.pow(10, -p || 0), a = Math.abs(v);
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if(!v || a >= d || a * Math.pow(10, p + 1) < 5){
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d = 0;
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}
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return round(v, p, m) + (v > 0 ? d : -d);
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}
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})();
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}
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/*=====
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dojo.number.__FormatAbsoluteOptions = function(){
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// decimal: String?
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// the decimal separator
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// group: String?
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// the group separator
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// places: Number?|String?
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// number of decimal places. the range "n,m" will format to m places.
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// round: Number?
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// 5 rounds to nearest .5; 0 rounds to nearest whole (default). -1
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// means don't round.
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this.decimal = decimal;
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this.group = group;
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this.places = places;
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this.round = round;
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}
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=====*/
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dojo.number._formatAbsolute = function(/*Number*/value, /*String*/pattern, /*dojo.number.__FormatAbsoluteOptions?*/options){
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// summary:
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// Apply numeric pattern to absolute value using options. Gives no
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// consideration to local customs.
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// value:
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// the number to be formatted, ignores sign
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// pattern:
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// the number portion of a pattern (e.g. `#,##0.00`)
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options = options || {};
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if(options.places === true){options.places=0;}
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if(options.places === Infinity){options.places=6;} // avoid a loop; pick a limit
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var patternParts = pattern.split("."),
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comma = typeof options.places == "string" && options.places.indexOf(","),
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maxPlaces = options.places;
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if(comma){
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maxPlaces = options.places.substring(comma + 1);
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}else if(!(maxPlaces >= 0)){
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maxPlaces = (patternParts[1] || []).length;
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}
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if(!(options.round < 0)){
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value = dojo.number.round(value, maxPlaces, options.round);
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}
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var valueParts = String(Math.abs(value)).split("."),
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fractional = valueParts[1] || "";
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if(patternParts[1] || options.places){
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if(comma){
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options.places = options.places.substring(0, comma);
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}
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// Pad fractional with trailing zeros
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var pad = options.places !== undefined ? options.places : (patternParts[1] && patternParts[1].lastIndexOf("0") + 1);
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if(pad > fractional.length){
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valueParts[1] = dojo.string.pad(fractional, pad, '0', true);
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}
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// Truncate fractional
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if(maxPlaces < fractional.length){
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valueParts[1] = fractional.substr(0, maxPlaces);
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}
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}else{
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if(valueParts[1]){ valueParts.pop(); }
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}
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// Pad whole with leading zeros
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var patternDigits = patternParts[0].replace(',', '');
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pad = patternDigits.indexOf("0");
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if(pad != -1){
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pad = patternDigits.length - pad;
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if(pad > valueParts[0].length){
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valueParts[0] = dojo.string.pad(valueParts[0], pad);
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}
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// Truncate whole
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if(patternDigits.indexOf("#") == -1){
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valueParts[0] = valueParts[0].substr(valueParts[0].length - pad);
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}
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}
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// Add group separators
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var index = patternParts[0].lastIndexOf(','),
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groupSize, groupSize2;
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if(index != -1){
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groupSize = patternParts[0].length - index - 1;
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var remainder = patternParts[0].substr(0, index);
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index = remainder.lastIndexOf(',');
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if(index != -1){
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groupSize2 = remainder.length - index - 1;
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}
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}
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var pieces = [];
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for(var whole = valueParts[0]; whole;){
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var off = whole.length - groupSize;
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pieces.push((off > 0) ? whole.substr(off) : whole);
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whole = (off > 0) ? whole.slice(0, off) : "";
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if(groupSize2){
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groupSize = groupSize2;
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delete groupSize2;
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}
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}
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valueParts[0] = pieces.reverse().join(options.group || ",");
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return valueParts.join(options.decimal || ".");
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};
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/*=====
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dojo.number.__RegexpOptions = function(){
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// pattern: String?
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// override [formatting pattern](http://www.unicode.org/reports/tr35/#Number_Format_Patterns)
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// with this string. Default value is based on locale. Overriding this property will defeat
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// localization.
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// type: String?
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// choose a format type based on the locale from the following:
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// decimal, scientific (not yet supported), percent, currency. decimal by default.
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// locale: String?
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// override the locale used to determine formatting rules
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// strict: Boolean?
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// strict parsing, false by default. Strict parsing requires input as produced by the format() method.
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// Non-strict is more permissive, e.g. flexible on white space, omitting thousands separators
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// places: Number|String?
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// number of decimal places to accept: Infinity, a positive number, or
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// a range "n,m". Defined by pattern or Infinity if pattern not provided.
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this.pattern = pattern;
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this.type = type;
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this.locale = locale;
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this.strict = strict;
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this.places = places;
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}
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=====*/
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dojo.number.regexp = function(/*dojo.number.__RegexpOptions?*/options){
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// summary:
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// Builds the regular needed to parse a number
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// description:
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// Returns regular expression with positive and negative match, group
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// and decimal separators
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return dojo.number._parseInfo(options).regexp; // String
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}
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dojo.number._parseInfo = function(/*Object?*/options){
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options = options || {};
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var locale = dojo.i18n.normalizeLocale(options.locale),
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bundle = dojo.i18n.getLocalization("dojo.cldr", "number", locale),
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pattern = options.pattern || bundle[(options.type || "decimal") + "Format"],
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//TODO: memoize?
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group = bundle.group,
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decimal = bundle.decimal,
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factor = 1;
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if(pattern.indexOf('%') != -1){
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factor /= 100;
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}else if(pattern.indexOf('\u2030') != -1){
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factor /= 1000; // per mille
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}else{
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var isCurrency = pattern.indexOf('\u00a4') != -1;
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if(isCurrency){
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group = bundle.currencyGroup || group;
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decimal = bundle.currencyDecimal || decimal;
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}
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}
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//TODO: handle quoted escapes
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var patternList = pattern.split(';');
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if(patternList.length == 1){
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patternList.push("-" + patternList[0]);
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}
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var re = dojo.regexp.buildGroupRE(patternList, function(pattern){
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pattern = "(?:"+dojo.regexp.escapeString(pattern, '.')+")";
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return pattern.replace(dojo.number._numberPatternRE, function(format){
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var flags = {
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signed: false,
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separator: options.strict ? group : [group,""],
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fractional: options.fractional,
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decimal: decimal,
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exponent: false
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},
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parts = format.split('.'),
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places = options.places;
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// special condition for percent (factor != 1)
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// allow decimal places even if not specified in pattern
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if(parts.length == 1 && factor != 1){
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parts[1] = "###";
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}
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if(parts.length == 1 || places === 0){
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flags.fractional = false;
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}else{
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if(places === undefined){ places = options.pattern ? parts[1].lastIndexOf('0') + 1 : Infinity; }
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if(places && options.fractional == undefined){flags.fractional = true;} // required fractional, unless otherwise specified
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if(!options.places && (places < parts[1].length)){ places += "," + parts[1].length; }
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flags.places = places;
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}
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var groups = parts[0].split(',');
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if(groups.length > 1){
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flags.groupSize = groups.pop().length;
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if(groups.length > 1){
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flags.groupSize2 = groups.pop().length;
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}
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}
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return "("+dojo.number._realNumberRegexp(flags)+")";
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});
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}, true);
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if(isCurrency){
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// substitute the currency symbol for the placeholder in the pattern
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re = re.replace(/([\s\xa0]*)(\u00a4{1,3})([\s\xa0]*)/g, function(match, before, target, after){
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var prop = ["symbol", "currency", "displayName"][target.length-1],
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symbol = dojo.regexp.escapeString(options[prop] || options.currency || "");
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before = before ? "[\\s\\xa0]" : "";
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after = after ? "[\\s\\xa0]" : "";
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if(!options.strict){
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if(before){before += "*";}
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if(after){after += "*";}
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return "(?:"+before+symbol+after+")?";
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}
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return before+symbol+after;
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});
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}
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//TODO: substitute localized sign/percent/permille/etc.?
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// normalize whitespace and return
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return {regexp: re.replace(/[\xa0 ]/g, "[\\s\\xa0]"), group: group, decimal: decimal, factor: factor}; // Object
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}
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/*=====
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dojo.number.__ParseOptions = function(){
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// pattern: String?
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// override [formatting pattern](http://www.unicode.org/reports/tr35/#Number_Format_Patterns)
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// with this string. Default value is based on locale. Overriding this property will defeat
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// localization. Literal characters in patterns are not supported.
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// type: String?
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// choose a format type based on the locale from the following:
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// decimal, scientific (not yet supported), percent, currency. decimal by default.
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// locale: String?
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// override the locale used to determine formatting rules
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// strict: Boolean?
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// strict parsing, false by default. Strict parsing requires input as produced by the format() method.
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// Non-strict is more permissive, e.g. flexible on white space, omitting thousands separators
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// fractional: Boolean?|Array?
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// Whether to include the fractional portion, where the number of decimal places are implied by pattern
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// or explicit 'places' parameter. The value [true,false] makes the fractional portion optional.
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this.pattern = pattern;
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this.type = type;
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this.locale = locale;
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this.strict = strict;
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this.fractional = fractional;
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}
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=====*/
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dojo.number.parse = function(/*String*/expression, /*dojo.number.__ParseOptions?*/options){
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// summary:
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// Convert a properly formatted string to a primitive Number, using
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// locale-specific settings.
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// description:
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// Create a Number from a string using a known localized pattern.
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// Formatting patterns are chosen appropriate to the locale
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// and follow the syntax described by
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// [unicode.org TR35](http://www.unicode.org/reports/tr35/#Number_Format_Patterns)
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// Note that literal characters in patterns are not supported.
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// expression:
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// A string representation of a Number
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var info = dojo.number._parseInfo(options),
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results = (new RegExp("^"+info.regexp+"$")).exec(expression);
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if(!results){
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return NaN; //NaN
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}
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var absoluteMatch = results[1]; // match for the positive expression
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if(!results[1]){
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if(!results[2]){
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return NaN; //NaN
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}
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// matched the negative pattern
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absoluteMatch =results[2];
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info.factor *= -1;
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}
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// Transform it to something Javascript can parse as a number. Normalize
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// decimal point and strip out group separators or alternate forms of whitespace
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absoluteMatch = absoluteMatch.
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replace(new RegExp("["+info.group + "\\s\\xa0"+"]", "g"), "").
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replace(info.decimal, ".");
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// Adjust for negative sign, percent, etc. as necessary
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return absoluteMatch * info.factor; //Number
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};
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/*=====
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dojo.number.__RealNumberRegexpFlags = function(){
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// places: Number?
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// The integer number of decimal places or a range given as "n,m". If
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// not given, the decimal part is optional and the number of places is
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// unlimited.
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// decimal: String?
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// A string for the character used as the decimal point. Default
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// is ".".
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// fractional: Boolean?|Array?
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// Whether decimal places are used. Can be true, false, or [true,
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// false]. Default is [true, false] which means optional.
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// exponent: Boolean?|Array?
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// Express in exponential notation. Can be true, false, or [true,
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// false]. Default is [true, false], (i.e. will match if the
|
|
// exponential part is present are not).
|
|
// eSigned: Boolean?|Array?
|
|
// The leading plus-or-minus sign on the exponent. Can be true,
|
|
// false, or [true, false]. Default is [true, false], (i.e. will
|
|
// match if it is signed or unsigned). flags in regexp.integer can be
|
|
// applied.
|
|
this.places = places;
|
|
this.decimal = decimal;
|
|
this.fractional = fractional;
|
|
this.exponent = exponent;
|
|
this.eSigned = eSigned;
|
|
}
|
|
=====*/
|
|
|
|
dojo.number._realNumberRegexp = function(/*dojo.number.__RealNumberRegexpFlags?*/flags){
|
|
// summary:
|
|
// Builds a regular expression to match a real number in exponential
|
|
// notation
|
|
|
|
// assign default values to missing parameters
|
|
flags = flags || {};
|
|
//TODO: use mixin instead?
|
|
if(!("places" in flags)){ flags.places = Infinity; }
|
|
if(typeof flags.decimal != "string"){ flags.decimal = "."; }
|
|
if(!("fractional" in flags) || /^0/.test(flags.places)){ flags.fractional = [true, false]; }
|
|
if(!("exponent" in flags)){ flags.exponent = [true, false]; }
|
|
if(!("eSigned" in flags)){ flags.eSigned = [true, false]; }
|
|
|
|
var integerRE = dojo.number._integerRegexp(flags),
|
|
decimalRE = dojo.regexp.buildGroupRE(flags.fractional,
|
|
function(q){
|
|
var re = "";
|
|
if(q && (flags.places!==0)){
|
|
re = "\\" + flags.decimal;
|
|
if(flags.places == Infinity){
|
|
re = "(?:" + re + "\\d+)?";
|
|
}else{
|
|
re += "\\d{" + flags.places + "}";
|
|
}
|
|
}
|
|
return re;
|
|
},
|
|
true
|
|
);
|
|
|
|
var exponentRE = dojo.regexp.buildGroupRE(flags.exponent,
|
|
function(q){
|
|
if(q){ return "([eE]" + dojo.number._integerRegexp({ signed: flags.eSigned}) + ")"; }
|
|
return "";
|
|
}
|
|
);
|
|
|
|
var realRE = integerRE + decimalRE;
|
|
// allow for decimals without integers, e.g. .25
|
|
if(decimalRE){realRE = "(?:(?:"+ realRE + ")|(?:" + decimalRE + "))";}
|
|
return realRE + exponentRE; // String
|
|
};
|
|
|
|
/*=====
|
|
dojo.number.__IntegerRegexpFlags = function(){
|
|
// signed: Boolean?
|
|
// The leading plus-or-minus sign. Can be true, false, or `[true,false]`.
|
|
// Default is `[true, false]`, (i.e. will match if it is signed
|
|
// or unsigned).
|
|
// separator: String?
|
|
// The character used as the thousands separator. Default is no
|
|
// separator. For more than one symbol use an array, e.g. `[",", ""]`,
|
|
// makes ',' optional.
|
|
// groupSize: Number?
|
|
// group size between separators
|
|
// groupSize2: Number?
|
|
// second grouping, where separators 2..n have a different interval than the first separator (for India)
|
|
this.signed = signed;
|
|
this.separator = separator;
|
|
this.groupSize = groupSize;
|
|
this.groupSize2 = groupSize2;
|
|
}
|
|
=====*/
|
|
|
|
dojo.number._integerRegexp = function(/*dojo.number.__IntegerRegexpFlags?*/flags){
|
|
// summary:
|
|
// Builds a regular expression that matches an integer
|
|
|
|
// assign default values to missing parameters
|
|
flags = flags || {};
|
|
if(!("signed" in flags)){ flags.signed = [true, false]; }
|
|
if(!("separator" in flags)){
|
|
flags.separator = "";
|
|
}else if(!("groupSize" in flags)){
|
|
flags.groupSize = 3;
|
|
}
|
|
|
|
var signRE = dojo.regexp.buildGroupRE(flags.signed,
|
|
function(q){ return q ? "[-+]" : ""; },
|
|
true
|
|
);
|
|
|
|
var numberRE = dojo.regexp.buildGroupRE(flags.separator,
|
|
function(sep){
|
|
if(!sep){
|
|
return "(?:\\d+)";
|
|
}
|
|
|
|
sep = dojo.regexp.escapeString(sep);
|
|
if(sep == " "){ sep = "\\s"; }
|
|
else if(sep == "\xa0"){ sep = "\\s\\xa0"; }
|
|
|
|
var grp = flags.groupSize, grp2 = flags.groupSize2;
|
|
//TODO: should we continue to enforce that numbers with separators begin with 1-9? See #6933
|
|
if(grp2){
|
|
var grp2RE = "(?:0|[1-9]\\d{0," + (grp2-1) + "}(?:[" + sep + "]\\d{" + grp2 + "})*[" + sep + "]\\d{" + grp + "})";
|
|
return ((grp-grp2) > 0) ? "(?:" + grp2RE + "|(?:0|[1-9]\\d{0," + (grp-1) + "}))" : grp2RE;
|
|
}
|
|
return "(?:0|[1-9]\\d{0," + (grp-1) + "}(?:[" + sep + "]\\d{" + grp + "})*)";
|
|
},
|
|
true
|
|
);
|
|
|
|
return signRE + numberRE; // String
|
|
}
|
|
|
|
}
|