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function dec2char(n) {
// converts a decimal number to a Unicode character
// n: the dec codepoint value to be converted
if (n <= 0xffff) {
out = String.fromCharCode(n);
} else if (n <= 0x10ffff) {
n -= 0x10000;
out =
String.fromCharCode(0xd800 | (n >> 10)) +
String.fromCharCode(0xdc00 | (n & 0x3ff));
} else out = "dec2char error: Code point out of range: " + n;
return out;
}
function eucjpDecoder(stream) {
stream = stream.replace(/%/g, " ");
stream = stream.replace(/[\s]+/g, " ").trim();
var bytes = stream.split(" ");
for (var i = 0; i < bytes.length; i++) bytes[i] = parseInt(bytes[i], 16);
var out = "";
var lead, byte, offset, ptr, cp;
var jis0212flag = false;
var eucjpLead = 0x00;
var endofstream = 2000000;
var finished = false;
while (!finished) {
if (bytes.length == 0) byte = endofstream;
else byte = bytes.shift();
if (byte == endofstream && eucjpLead != 0x00) {
eucjpLead = 0x00;
out += "�";
continue;
}
if (byte == endofstream && eucjpLead == 0x00) {
finished = true;
continue;
}
if (eucjpLead == 0x8e && byte >= 0xa1 && byte <= 0xdf) {
eucjpLead = 0x00;
out += dec2char(0xff61 + byte - 0xa1);
continue;
}
if (eucjpLead == 0x8f && byte >= 0xa1 && byte <= 0xfe) {
jis0212flag = true;
eucjpLead = byte;
continue;
}
if (eucjpLead != 0x00) {
lead = eucjpLead;
eucjpLead = 0x00;
cp = null;
if (
lead >= 0xa1 &&
lead <= 0xfe &&
(byte >= 0xa1 && byte <= 0xfe)
) {
ptr = (lead - 0xa1) * 94 + byte - 0xa1;
if (jis0212flag) cp = jis0212[ptr];
else cp = jis0208[ptr];
}
jis0212flag = false;
if (cp != null) {
out += dec2char(cp);
continue;
}
if (byte >= 0x00 && byte <= 0x7f) bytes.unshift(byte);
out += "�";
continue;
}
if (byte >= 0x00 && byte <= 0x7f) {
out += dec2char(byte);
continue;
}
if (byte == 0x8e || byte == 0x8f || (byte >= 0xa1 && byte <= 0xfe)) {
eucjpLead = byte;
continue;
}
out += "�";
}
return out;
}
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