js ArrayBuffers和字符串相互转换
/**
* 将ArrayBuffer转换为string
* @param input 需要被转换的ArrayBuffer
*/
public static ab2str(input: ArrayBuffer): string {
var binary = '';
var bytes = new Uint16Array(input);
var len = bytes.byteLength;
for (var i = 0; i < len; i++) {
binary += String.fromCharCode(bytes[i]);
}
return unescape(binary);
}
/**
* 将string转换为ArrayBuffer
* @param input 需要被转换的string
*/
public static str2ab(input: string): ArrayBuffer {
input = escape(input);
var buf = new ArrayBuffer(input.length * 2); // 2 bytes for each char
var bufView = new Uint16Array(buf);
for (var i = 0, strLen = input.length; i < strLen; i++) {
bufView[i] = input.charCodeAt(i);
}
return buf;
}
