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JavaScript で漢数字からアラビア数字に変換
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// https://qiita.com/dosec/items/c6aef40fae6977fd89ab | |
// から移植+α | |
// とりあえず | |
// (文字列).kansuji2arabic(split3) | |
// で動作 | |
(function(){ | |
// 改良版 typeOf(のさらに改良) | |
// http://qiita.com/Hiraku/items/87e5d1cdaaa475c80cc2 | |
var typeOf = function(x) { | |
if (x === null) return 'null'; | |
if (x == null) return 'undefined'; | |
var type = typeof x, c = x.constructor, cName = c && c.name ? c.name : ''; | |
if (type === 'object') { | |
if(jQuery && x instanceof jQuery){ | |
return 'jQuery'; | |
} | |
return cName ? cName : | |
Object.prototype.toString.call(x).slice(8, -1); | |
} | |
if(cName && type == cName.toLowerCase()){ | |
return cName; | |
} | |
return type; | |
}; | |
// 汎用 compare 関数 | |
compareStringLenAsc = function(a, b){ | |
return a.length - b.length; | |
}; | |
compareStringLenDesc = function(a, b){ | |
return b.length - a.length; | |
}; | |
// プロトタイプのメソッド拡張 | |
var extendMethod = function(object, methodName, method, forceOverwrite) { | |
if(typeof object[methodName] === 'undefined' || forceOverwrite){ | |
if(typeof Object.defineProperty !== 'function') { | |
object[methodName] = method; | |
} else { | |
Object.defineProperty(object, methodName, { | |
configurable: false, | |
enumerable: false, | |
value: method, | |
}); | |
} | |
} | |
}; | |
// String プロトタイプ拡張 | |
// 全置換 | |
// (文字列).replaceAll((置換対象),(置換語)) | |
extendMethod(String.prototype, 'replaceAll', function(org, dest){ | |
var orgRE = new RegExp(org, 'g'); | |
return this.replace(orgRE, dest); | |
}); | |
// 全角の数値を半角に | |
// (文字列).numZenToHan() | |
var _zenExcepts = [ | |
{from:'.', to:'.'}, | |
{from:'-', to:'-'}, | |
{from:'ー', to:'-'} | |
]; | |
extendMethod(String.prototype, 'numZenToHan', function(){ | |
var result = this; | |
for(var i = 0; i < 10; i++){ | |
result = result.replaceAll(String.fromCharCode(65296+i),String.fromCharCode(48+i)); | |
} | |
_zenExcepts.forEach(function(value, index){ | |
result = result.replaceAll(value.from, value.to); | |
}); | |
return result; | |
}); | |
// 漢数字の置換テーブル | |
var kansujiTransTable = {'零':'〇','壱':'一','壹':'一','弌':'一','弐':'二','貳':'二','参':'三','參':'三','肆':'四','伍':'五','陸':'六','漆':'七','柒':'七','質':'七','捌':'八','玖':'九','廿':'二十','卅':'三十','丗':'三十','卌':'四十','佰':'百','陌':'百','仟':'千','阡':'千','萬':'万'}, | |
kansujiList = kansujiREList = '〇一二三四五六七八九', | |
kansujiUnits = {'十':10,'百':100,'千':1000}, | |
kansujiUnitsRE = new RegExp('[十百千]|[^十百千]+','g'), | |
kansujiMansRE = new RegExp('[万億兆]|[^万億兆]+','g'), | |
kansujiMans = {'万':10000,'億':100000000,'兆':1000000000000}; | |
Object.keys(kansujiUnits).forEach(function(value, index){ | |
kansujiREList += value; | |
}); | |
Object.keys(kansujiMans).forEach(function(value, index){ | |
kansujiREList += value; | |
}); | |
var kansujiRE = new RegExp('(['+kansujiREList+'\\d]+)','g'); | |
// 漢数字からアラビア数字に変換 | |
// (文字列).kansuji2arabic(split3) | |
extendMethod(String.prototype, 'kansuji2arabic', function(split3){ | |
var kansujistr = this.numZenToHan(); | |
var protoMap = Array.prototype.map; | |
var transValue = function(num, re, dic){ | |
var tmpre = re || kansujiUnitsRE, | |
tmpdic = dic || kansujiUnits, | |
unit = 1, | |
result = 0, | |
match = num.match(tmpre).reverse(); | |
match.forEach(function(value, index){ | |
if(tmpdic[value]){ | |
if(unit > 1) { | |
result += unit; | |
} | |
unit = tmpdic[value]; | |
} else { | |
var val = (!isNaN(value)) ? parseInt(value) : transValue(value); | |
result += val * unit; | |
unit = 1; | |
} | |
}); | |
if(unit > 1) { | |
result += unit; | |
} | |
return result; | |
}; | |
Object.keys(kansujiTransTable).forEach(function(value, index){ | |
kansujistr = kansujistr.replaceAll(value, kansujiTransTable[value]); | |
}); | |
if(kansujistr && kansujiRE.test(kansujistr)){ | |
var match = kansujistr.match(kansujiRE).unique().sort(compareStringLenDesc); | |
match.forEach(function(value, index){ | |
var tempValue = '' + value; | |
protoMap.call(kansujiList, function(x, ind){ | |
tempValue = tempValue.replaceAll(x, ind); | |
}); | |
tempValue = transValue(tempValue, kansujiMansRE, kansujiMans); | |
if(split3){ | |
tempValue = tempValue.splitComma(3); | |
} else { | |
tempValue = '' + tempValue; | |
} | |
kansujistr = kansujistr.replaceAll(value, tempValue); | |
}); | |
} | |
return kansujistr; | |
}); | |
// Number プロトタイプ拡張 | |
// 数値をカンマ区切り | |
// (数値).splitComma(digit) | |
// 文字列で返るので注意 | |
extendMethod(Number.prototype, 'splitComma', function(digit){ | |
var tmpDigit = digit || 3, | |
digitRE = new RegExp('^([+-]?\\d+)(\\d{'+tmpDigit+'})'), | |
to = String(this), | |
tmp = ''; | |
while(to != (tmp = to.replace(digitRE,function(){return arguments[1]+','+arguments[2]}))){ | |
to = tmp; | |
} | |
return to; | |
}); | |
// Array プロトタイプ拡張 | |
// 配列の重複を取り除く | |
// (Array).unique(numStrSame) | |
extendMethod(Array.prototype, 'unique', function(numStrSame){ | |
var targetArray = this, | |
storageDict = {}, | |
resultArray = []; | |
targetArray.forEach(function(value){ | |
var key = numStrSame ? String(value) : typeOf(value)+':'+value; | |
if(!storageDict.hasOwnProperty(key)){ | |
storageDict[key] = true; | |
resultArray.push(value); | |
} | |
}); | |
return resultArray; | |
}); | |
})(); |
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