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filter U+FEFF (BOM) when decoding input data

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This commit is contained in:
Ken Aoki
2021-01-23 04:39:57 +00:00
parent 4da5d557a5
commit 93aab95f7b
2 changed files with 27 additions and 6 deletions
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src/common/input/TextDecoder.test.ts
+21 -4
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@@ -58,8 +58,8 @@ describe('text encodings', () => {
const decoder = new StringToUtf32();
const target = new Uint32Array(5);
for (let i = 0; i < 65536; ++i) {
// skip surrogate pairs
if (i >= 0xD800 && i <= 0xDFFF) {
// skip surrogate pairs and a BOM
if ((i >= 0xD800 && i <= 0xDFFF) || i === 0xFEFF) {
continue;
}
const length = decoder.decode(String.fromCharCode(i), target);
@@ -84,6 +84,14 @@ describe('text encodings', () => {
decoder.clear();
}
});
it('0xFEFF(BOM)', () => {
const decoder = new StringToUtf32();
const target = new Uint32Array(5);
const length = decoder.decode(String.fromCharCode(0xFEFF), target);
assert.equal(length, 0);
decoder.clear();
});
});
it('test strings', () => {
@@ -118,8 +126,8 @@ describe('text encodings', () => {
const decoder = new Utf8ToUtf32();
const target = new Uint32Array(5);
for (let i = 0; i < 65536; ++i) {
// skip surrogate pairs
if (i >= 0xD800 && i <= 0xDFFF) {
// skip surrogate pairs and a BOM
if ((i >= 0xD800 && i <= 0xDFFF) || i === 0xFEFF) {
continue;
}
const utf8Data = fromByteString(encode(String.fromCharCode(i)));
@@ -142,6 +150,15 @@ describe('text encodings', () => {
decoder.clear();
}
});
it('0xFEFF(BOM)', () => {
const decoder = new Utf8ToUtf32();
const target = new Uint32Array(5);
const utf8Data = fromByteString(encode(String.fromCharCode(0xFEFF)));
const length = decoder.decode(utf8Data, target);
assert.equal(length, 0);
decoder.clear();
});
});
it('test strings', () => {