82 lines
2.2 KiB
JavaScript
82 lines
2.2 KiB
JavaScript
|
//???????????16????
|
||
|
|
function bytesToHex(arr) {
|
||
|
|
var str = "";
|
||
|
|
for (var i = 0; i < arr.length; i++) {
|
||
|
|
str += (0x0100 + (arr[i] & 0x00FF)).toString(16).substring(1);
|
||
|
|
}
|
||
|
|
return str;
|
||
|
|
};
|
||
|
|
|
||
|
|
//16???????????????
|
||
|
|
function hexToBytes(str) {
|
||
|
|
var arr = [];
|
||
|
|
var hexStrLength = str.length;
|
||
|
|
for (var i = 0; i < hexStrLength; i += 2) {
|
||
|
|
arr[arr.length] = parseInt(str.substr(i, 2), 16)
|
||
|
|
}
|
||
|
|
return arr;
|
||
|
|
};
|
||
|
|
|
||
|
|
//????UTF-8???????????
|
||
|
|
function strToUtf8Bytes(str) {
|
||
|
|
var bytes = new Array();
|
||
|
|
var len, c;
|
||
|
|
len = str.length;
|
||
|
|
for (var i = 0; i < len; i++) {
|
||
|
|
c = str.charCodeAt(i);
|
||
|
|
if (c >= 0x010000 && c <= 0x10FFFF) {
|
||
|
|
bytes.push(((c >> 18) & 0x07) | 0xF0);
|
||
|
|
bytes.push(((c >> 12) & 0x3F) | 0x80);
|
||
|
|
bytes.push(((c >> 6) & 0x3F) | 0x80);
|
||
|
|
bytes.push((c & 0x3F) | 0x80);
|
||
|
|
} else if (c >= 0x000800 && c <= 0x00FFFF) {
|
||
|
|
bytes.push(((c >> 12) & 0x0F) | 0xE0);
|
||
|
|
bytes.push(((c >> 6) & 0x3F) | 0x80);
|
||
|
|
bytes.push((c & 0x3F) | 0x80);
|
||
|
|
} else if (c >= 0x000080 && c <= 0x0007FF) {
|
||
|
|
bytes.push(((c >> 6) & 0x1F) | 0xC0);
|
||
|
|
bytes.push((c & 0x3F) | 0x80);
|
||
|
|
} else {
|
||
|
|
bytes.push(c & 0xFF);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return bytes;
|
||
|
|
};
|
||
|
|
|
||
|
|
//???????????UTF-8?????
|
||
|
|
function bytesToUtf8Str(arr) {
|
||
|
|
try {
|
||
|
|
var str = '', _arr = arr;
|
||
|
|
for (var i = 0; i < _arr.length; i++) {
|
||
|
|
var one = _arr[i].toString(2), v = one.match(/^1+?(?=0)/);
|
||
|
|
if (v && one.length == 8) {
|
||
|
|
var bytesLength = v[0].length;
|
||
|
|
var store = _arr[i].toString(2).slice(7 - bytesLength);
|
||
|
|
for (var st = 1; st < bytesLength; st++) {
|
||
|
|
store += _arr[st + i].toString(2).slice(2);
|
||
|
|
}
|
||
|
|
str += String.fromCharCode(parseInt(store, 2));
|
||
|
|
i += bytesLength - 1;
|
||
|
|
} else {
|
||
|
|
str += String.fromCharCode(_arr[i]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return str;
|
||
|
|
} catch(e) {
|
||
|
|
alert("?UTF8??????UTF8???????????");
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
function clearArray(destinationArray, destinationIndex, length) {
|
||
|
|
for (elm in destinationArray) {
|
||
|
|
destinationArray[elm] = null
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
function copyArray(sourceArray, sourceIndex, destinationArray, destinationIndex, length) {
|
||
|
|
var cloneArray = sourceArray.slice(sourceIndex, sourceIndex + length);
|
||
|
|
for (var i = 0; i < cloneArray.length; i++) {
|
||
|
|
destinationArray[destinationIndex] = cloneArray[i];
|
||
|
|
destinationIndex++
|
||
|
|
}
|
||
|
|
};
|