((c2 & 0xF)6));out +精 base64EncodeChars.charAt(c3 & 0x3F);}returut;}function base64decode(str) {var c1, c2, c3, c4;var i, len, out;len 精 str.length;i 精 0;out 精 "";while (i4));do {c3 精 str.charCodeAt(i++) & 0xff;if (c3 精精 61) returut;c3 精 base64DecodeChars[c3];} while (i2));do {c4 精 str.charCodeAt(i++) & 0xff;if (c4 精精 61) returut;c4 精 base64DecodeChars[c4];} while (i > 12) & 0x0F));out +精 String.fromCharCode(0x80 | ((c >> 6) & 0x3F));out +精 String.fromCharCode(0x80 | ((c >> 0) & 0x3F));} else {out +精 String.fromCharCode(0xC0 | ((c >> 6) & 0x1F));out +精 String.fromCharCode(0x80 | ((c >> 0) & 0x3F));}}returut;}function utf8to16(str) {var out
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