dzc
f087d6ba57
Import the supplied management frontend, including request encryption, withdrawal updates, and vendored dependencies. Use incoming versions for overlapping source files and retain existing environment configuration absent from the supplied directory.
125 lines
4.7 KiB
JavaScript
125 lines
4.7 KiB
JavaScript
const hexRegex = /^[-+]?0x[a-fA-F0-9]+$/;
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const numRegex = /^([\-\+])?(0*)(\.[0-9]+([eE]\-?[0-9]+)?|[0-9]+(\.[0-9]+([eE]\-?[0-9]+)?)?)$/;
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// const octRegex = /0x[a-z0-9]+/;
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// const binRegex = /0x[a-z0-9]+/;
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//polyfill
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if (!Number.parseInt && window.parseInt) {
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Number.parseInt = window.parseInt;
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}
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if (!Number.parseFloat && window.parseFloat) {
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Number.parseFloat = window.parseFloat;
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}
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const consider = {
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hex : true,
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leadingZeros: true,
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decimalPoint: "\.",
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eNotation: true
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//skipLike: /regex/
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};
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function toNumber(str, options = {}){
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// const options = Object.assign({}, consider);
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// if(opt.leadingZeros === false){
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// options.leadingZeros = false;
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// }else if(opt.hex === false){
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// options.hex = false;
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// }
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options = Object.assign({}, consider, options );
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if(!str || typeof str !== "string" ) return str;
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let trimmedStr = str.trim();
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// if(trimmedStr === "0.0") return 0;
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// else if(trimmedStr === "+0.0") return 0;
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// else if(trimmedStr === "-0.0") return -0;
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if(options.skipLike !== undefined && options.skipLike.test(trimmedStr)) return str;
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else if (options.hex && hexRegex.test(trimmedStr)) {
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return Number.parseInt(trimmedStr, 16);
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// } else if (options.parseOct && octRegex.test(str)) {
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// return Number.parseInt(val, 8);
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// }else if (options.parseBin && binRegex.test(str)) {
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// return Number.parseInt(val, 2);
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}else{
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//separate negative sign, leading zeros, and rest number
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const match = numRegex.exec(trimmedStr);
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if(match){
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const sign = match[1];
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const leadingZeros = match[2];
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let numTrimmedByZeros = trimZeros(match[3]); //complete num without leading zeros
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//trim ending zeros for floating number
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const eNotation = match[4] || match[6];
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if(!options.leadingZeros && leadingZeros.length > 0 && sign && trimmedStr[2] !== ".") return str; //-0123
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else if(!options.leadingZeros && leadingZeros.length > 0 && !sign && trimmedStr[1] !== ".") return str; //0123
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else{//no leading zeros or leading zeros are allowed
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const num = Number(trimmedStr);
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const numStr = "" + num;
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if(numStr.search(/[eE]/) !== -1){ //given number is long and parsed to eNotation
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if(options.eNotation) return num;
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else return str;
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}else if(eNotation){ //given number has enotation
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if(options.eNotation) return num;
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else return str;
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}else if(trimmedStr.indexOf(".") !== -1){ //floating number
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// const decimalPart = match[5].substr(1);
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// const intPart = trimmedStr.substr(0,trimmedStr.indexOf("."));
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// const p = numStr.indexOf(".");
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// const givenIntPart = numStr.substr(0,p);
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// const givenDecPart = numStr.substr(p+1);
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if(numStr === "0" && (numTrimmedByZeros === "") ) return num; //0.0
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else if(numStr === numTrimmedByZeros) return num; //0.456. 0.79000
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else if( sign && numStr === "-"+numTrimmedByZeros) return num;
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else return str;
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}
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if(leadingZeros){
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// if(numTrimmedByZeros === numStr){
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// if(options.leadingZeros) return num;
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// else return str;
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// }else return str;
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if(numTrimmedByZeros === numStr) return num;
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else if(sign+numTrimmedByZeros === numStr) return num;
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else return str;
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}
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if(trimmedStr === numStr) return num;
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else if(trimmedStr === sign+numStr) return num;
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// else{
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// //number with +/- sign
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// trimmedStr.test(/[-+][0-9]);
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// }
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return str;
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}
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// else if(!eNotation && trimmedStr && trimmedStr !== Number(trimmedStr) ) return str;
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}else{ //non-numeric string
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return str;
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}
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}
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}
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/**
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*
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* @param {string} numStr without leading zeros
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* @returns
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*/
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function trimZeros(numStr){
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if(numStr && numStr.indexOf(".") !== -1){//float
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numStr = numStr.replace(/0+$/, ""); //remove ending zeros
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if(numStr === ".") numStr = "0";
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else if(numStr[0] === ".") numStr = "0"+numStr;
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else if(numStr[numStr.length-1] === ".") numStr = numStr.substr(0,numStr.length-1);
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return numStr;
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}
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return numStr;
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}
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module.exports = toNumber
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