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- function strToHexCharCode(str){if(str==="")return"";var hexCharCode=[];for(var i=0;i<str.length;i++){hexCharCode.push((str.charCodeAt(i)).toString(16))}return hexCharCode.join("").toUpperCase()}function bccCheck(data){var bcc='';for(var a=0;a<data.length/2;a++){bcc^=parseInt(data.substring(2*a,2*a+2),16)}if(bcc.length==1){bcc='0'+bcc}return tenToHex(bcc,2).toUpperCase()}function tenToHex(num,len,boo){var hex=num.toString(16);var zero='';for(var a=0;a<len-hex.length;a++){zero+='0'}var ret='';if(boo){if(hex.length%2==0){}else{hex='0'+hex;zero=zero.substring(1)}ret=hex+zero}else if(!boo){ret=zero+hex}return ret.toUpperCase()}function hexToString(str){var trimedStr=str.trim();var rawStr=trimedStr.substr(0,2).toLowerCase()==="0x"?trimedStr.substr(2):trimedStr;var len=rawStr.length;if(len%2!==0){alert("Illegal Format ASCII Code!");return""}var curCharCode;var resultStr=[];for(var i=0;i<len;i=i+2){curCharCode=parseInt(rawStr.substr(i,2),16);resultStr.push(String.fromCharCode(curCharCode))}return resultStr.join("").toUpperCase()}function encodeUtf8(text){const code=encodeURIComponent(text);const bytes=[];for(var i=0;i<code.length;i++){const c=code.charAt(i);if(c==='%'){const hex=code.charAt(i+1)+code.charAt(i+2);const hexVal=parseInt(hex,16);bytes.push(hexVal);i+=2}else bytes.push(c.charCodeAt(0))}return bytes}function hexToTen(sixteen){var ten=parseInt(sixteen,16);return ten}function str2utf8(str){var code;var utf="";for(var i=0;i<str.length;i++){code=str.charCodeAt(i);if(code<0x0080){utf+=str.charAt(i)}else if(code<0x0800){utf+=String.fromCharCode(0xC0|((code>>6)&0x1F));utf+=String.fromCharCode(0x80|((code>>0)&0x3F))}else if(code<0x10000){utf+=String.fromCharCode(0xE0|((code>>12)&0x0F));utf+=String.fromCharCode(0x80|((code>>6)&0x3F));utf+=String.fromCharCode(0x80|((code>>0)&0x3F))}else{throw"不是UCS-2字符集";}}return utf}function hexTobin(str){str=str.toUpperCase();let hex_array=[{key:0,val:"0000"},{key:1,val:"0001"},{key:2,val:"0010"},{key:3,val:"0011"},{key:4,val:"0100"},{key:5,val:"0101"},{key:6,val:"0110"},{key:7,val:"0111"},{key:8,val:"1000"},{key:9,val:"1001"},{key:'A',val:"1010"},{key:'B',val:"1011"},{key:'C',val:"1100"},{key:'D',val:"1101"},{key:'E',val:"1110"},{key:'F',val:"1111"}];let value="";for(let i=0;i<str.length;i++){for(let j=0;j<hex_array.length;j++){if(str.charAt(i)==hex_array[j].key){value=value.concat(hex_array[j].val);break}}}return value}function binTohex(str){let hex_array=[{key:0,val:"0000"},{key:1,val:"0001"},{key:2,val:"0010"},{key:3,val:"0011"},{key:4,val:"0100"},{key:5,val:"0101"},{key:6,val:"0110"},{key:7,val:"0111"},{key:8,val:"1000"},{key:9,val:"1001"},{key:'a',val:"1010"},{key:'b',val:"1011"},{key:'c',val:"1100"},{key:'d',val:"1101"},{key:'e',val:"1110"},{key:'f',val:"1111"}];let value='';let list=[];if(str.length%4!==0){let a="0000";let b=a.substring(0,4-str.length%4);str=b.concat(str)}while(str.length>4){list.push(str.substring(0,4));str=str.substring(4)}list.push(str);for(let i=0;i<list.length;i++){for(let j=0;j<hex_array.length;j++){if(list[i]==hex_array[j].val){value=value.concat(hex_array[j].key);break}}}return value}function strToBuffer(cmd){let buffer=new ArrayBuffer(cmd.length/2);let dataView=new Uint8Array(buffer);for(var a=0;a<cmd.length/2;a++){dataView[a]='0x'+cmd.substring(2*a,2*a+2)}return buffer}function bufferTohex(buffer){var hexArr=Array.prototype.map.call(new Uint8Array(buffer),function(bit){return('00'+bit.toString(16)).slice(-2)});return hexArr.join('')}function isEmpty(data){if(data.length==0||data==null||data=='undefined'){return true}return false}module.exports={encodeUtf8:encodeUtf8,tenToHex:tenToHex,hexToTen:hexToTen,bccCheck:bccCheck,hexToString:hexToString,strToHexCharCode:strToHexCharCode,str2utf8:str2utf8,hexTobin:hexTobin,binTohex:binTohex,isEmpty:isEmpty,strToBuffer:strToBuffer,bufferTohex:bufferTohex}
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