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feat: Add user callback for handling invalid characters. #283

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feat: Add user callback for handling invalid characters. #283

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4 changes: 3 additions & 1 deletion lib/index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -40,7 +40,9 @@ iconv.decode = function decode(buf, encoding, options) {
var res = decoder.write(buf);
var trail = decoder.end();

return trail ? (res + trail) : res;
var res = trail ? (res + trail) : res;
if (res.indexOf('�') !== -1 && options && options.invalidCharHandler) res = options.invalidCharHandler()
return res
}

iconv.encodingExists = function encodingExists(enc) {
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14 changes: 14 additions & 0 deletions test/main-test.js
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Expand Up @@ -7,6 +7,20 @@ var testStringLatin1 = "Hello123!£Å÷×çþÿ¿®";
var testStringBase64 = "SGVsbG8xMjMh";
var testStringHex = "48656c6c6f31323321";

describe("user callback", function () {
it("Return nothing for issue#210#83", function () {
// when bad characters, return nothing instead of the ?.
// Like these:
// iconv.decode(Buffer.from([128]), 'utf8')
// iconv.decode(iconv.encode('ça va','utf8'), 'utf7')
assert.strictEqual(iconv.decode(Buffer.from([128]), 'utf8', {
invalidCharHandler: function () {
return ''
}
}), '');
})
})

describe("Generic UTF8-UCS2 tests", function() {

it("Return values are of correct types", function() {
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