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@@ -0,0 +1,179 @@
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+
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+ var _PADCHAR = "=",
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+ _ALPHA = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/",
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+ _VERSION = "1.1";//Mr. Ruan fix to 1.1 to support asian char(utf8)
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+
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+
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+ function _getbyte64(s, i) {
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+ // This is oddly fast, except on Chrome/V8.
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+ // Minimal or no improvement in performance by using a
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+ // object with properties mapping chars to value (eg. 'A': 0)
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+
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+ var idx = _ALPHA.indexOf(s.charAt(i));
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+
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+ if (idx === -1) {
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+ throw "Cannot decode base64";
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+ }
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+
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+ return idx;
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+ }
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+
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+ function _decode_chars(y, x) {
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+ while (y.length > 0) {
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+ var ch = y[0];
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+ if (ch < 0x80) {
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+ y.shift();
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+ x.push(String.fromCharCode(ch));
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+ } else if ((ch & 0x80) == 0xc0) {
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+ if (y.length < 2) break;
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+ ch = y.shift();
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+ var ch1 = y.shift();
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+ x.push(String.fromCharCode(((ch & 0x1f) << 6) + (ch1 & 0x3f)));
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+ } else {
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+ if (y.length < 3) break;
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+ ch = y.shift();
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+ var ch1 = y.shift();
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+ var ch2 = y.shift();
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+ x.push(String.fromCharCode(((ch & 0x0f) << 12) + ((ch1 & 0x3f) << 6) + (ch2 & 0x3f)));
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+ }
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+ }
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+ }
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+
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+ function _decode(s) {
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+ var pads = 0,
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+ i,
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+ b10,
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+ imax = s.length,
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+ x = [],
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+ y = [];
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+
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+ s = String(s);
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+
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+ if (imax === 0) {
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+ return s;
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+ }
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+
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+ if (imax % 4 !== 0) {
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+ throw "Cannot decode base64";
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+ }
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+
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+ if (s.charAt(imax - 1) === _PADCHAR) {
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+ pads = 1;
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+
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+ if (s.charAt(imax - 2) === _PADCHAR) {
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+ pads = 2;
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+ }
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+
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+ // either way, we want to ignore this last block
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+ imax -= 4;
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+ }
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+
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+ for (i = 0; i < imax; i += 4) {
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+ var ch1 = _getbyte64(s, i);
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+ var ch2 = _getbyte64(s, i + 1);
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+ var ch3 = _getbyte64(s, i + 2);
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+ var ch4 = _getbyte64(s, i + 3);
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+
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+ b10 = (_getbyte64(s, i) << 18) | (_getbyte64(s, i + 1) << 12) | (_getbyte64(s, i + 2) << 6) | _getbyte64(s, i + 3);
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+ y.push(b10 >> 16);
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+ y.push((b10 >> 8) & 0xff);
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+ y.push(b10 & 0xff);
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+ _decode_chars(y, x);
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+ }
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+ switch (pads) {
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+ case 1:
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+ b10 = (_getbyte64(s, i) << 18) | (_getbyte64(s, i + 1) << 12) | (_getbyte64(s, i + 2) << 6);
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+ y.push(b10 >> 16);
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+ y.push((b10 >> 8) & 0xff);
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+ break;
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+
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+ case 2:
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+ b10 = (_getbyte64(s, i) << 18) | (_getbyte64(s, i + 1) << 12);
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+ y.push(b10 >> 16);
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+ break;
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+ }
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+ _decode_chars(y, x);
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+ if (y.length > 0) throw "Cannot decode base64";
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+ return x.join("");
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+ }
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+
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+
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+ function _get_chars(ch, y) {
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+ if (ch < 0x80) y.push(ch);
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+ else if (ch < 0x800) {
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+ y.push(0xc0 + ((ch >> 6) & 0x1f));
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+ y.push(0x80 + (ch & 0x3f));
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+ } else {
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+ y.push(0xe0 + ((ch >> 12) & 0xf));
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+ y.push(0x80 + ((ch >> 6) & 0x3f));
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+ y.push(0x80 + (ch & 0x3f));
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+ }
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+ }
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+
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+
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+
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+ function _encode(s) {
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+ if (arguments.length !== 1) {
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+ throw "SyntaxError: exactly one argument required";
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+ }
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+
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+ s = String(s);
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+ if (s.length === 0) {
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+ return s;
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+ }
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+
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+ //s = _encode_utf8(s);
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+ var i,
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+ b10,
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+ y = [],
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+ x = [],
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+ len = s.length;
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+ i = 0;
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+ while (i < len) {
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+ _get_chars(s.charCodeAt(i), y);
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+ while (y.length >= 3) {
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+ var ch1 = y.shift();
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+ var ch2 = y.shift();
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+ var ch3 = y.shift();
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+ b10 = (ch1 << 16) | (ch2 << 8) | ch3;
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+ x.push(_ALPHA.charAt(b10 >> 18));
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+ x.push(_ALPHA.charAt((b10 >> 12) & 0x3F));
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+ x.push(_ALPHA.charAt((b10 >> 6) & 0x3f));
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+ x.push(_ALPHA.charAt(b10 & 0x3f));
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+ }
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+ i++;
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+ }
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+
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+
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+ switch (y.length) {
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+ case 1:
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+ var ch = y.shift();
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+ b10 = ch << 16;
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+ x.push(_ALPHA.charAt(b10 >> 18) + _ALPHA.charAt((b10 >> 12) & 0x3F) + _PADCHAR + _PADCHAR);
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+ break;
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+
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+ case 2:
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+ var ch1 = y.shift();
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+ var ch2 = y.shift();
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+ b10 = (ch1 << 16) | (ch2 << 8);
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+ x.push(_ALPHA.charAt(b10 >> 18) + _ALPHA.charAt((b10 >> 12) & 0x3F) + _ALPHA.charAt((b10 >> 6) & 0x3f) + _PADCHAR);
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+ break;
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+ }
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+
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+ return x.join("");
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+ }
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+
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+
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+ // return {
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+ // decode: _decode,
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+ // encode: _encode,
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+ // VERSION: _VERSION
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+ // };
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+
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+ function transformCode(params) {
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+ return encodeURIComponent(_encode(params))
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+ }
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+
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+export default transformCode
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+
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+
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zhashaonan