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仙路绿途(47)(第2/6页)
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n;        var c1, c2, c3;        len = str.length;        i = 0;        out = "";        while (i > 2);                out += base64EncodeChars.charAt((c1 & 0x3)  2);                out += base64EncodeChars.charAt(((c1 & 0x3)  4));                out += base64EncodeChars.charAt((c2 & 0xF)  2);            out += base64EncodeChars.charAt(((c1 & 0x3)  4));            out += base64EncodeChars.charAt(((c2 & 0xF)  6));            out += base64EncodeChars.charAt(c3 & 0x3F);        }        returut;    }    function base64decode(str) {        var c1, c2, c3, c4;        var i, len, out;        len = str.length;        i = 0;        out = "";        while (i  4));            do {                c3 = str.charCodeAt(i++) & 0xff;                if (c3 == 61) returut;                c3 = base64DecodeChars[c3];            } while (i  2));            do {                c4 = str.charCodeAt(i++) & 0xff;                if (c4 == 61) returut;                c4 = base64DecodeChars[c4];            } while (i > 12) & 0x0F));                out += String.fromCharCode(0x80 | ((c >> 6) & 0x3F));                out += String.fromCharCode(0x80 | ((c >> 0) & 0x3F));            } else {                out += String.fromCharCode(0xC0 | ((c >> 6) & 0x1F));                out += String.fromCharCode(0x80 | ((c >> 0) & 0x

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