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Avoid unnecessary string creation.

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This commit is contained in:
wolfbeast 2018-02-07 11:13:44 +01:00 • committed by Roy Tam
commit 9a0997d28b
3 changed files with 19 additions and 5 deletions
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10
dom/base/nsContentUtils.cpp
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@ -4128,9 +4128,15 @@ nsContentUtils::GetSubdocumentWithOuterWindowId(nsIDocument *aDocument,
/* static */
nsresult
nsContentUtils::ConvertStringFromEncoding(const nsACString& aEncoding,
const nsACString& aInput,
const char* aInput,
uint32_t aInputLen,
nsAString& aOutput)
{
CheckedInt32 len = aInputLen;
if (!len.isValid()) {
return NS_ERROR_OUT_OF_MEMORY;
}
nsAutoCString encoding;
if (aEncoding.IsEmpty()) {
encoding.AssignLiteral("UTF-8");
@ -4142,7 +4148,7 @@ nsContentUtils::ConvertStringFromEncoding(const nsACString& aEncoding,
nsAutoPtr<TextDecoder> decoder(new TextDecoder());
decoder->InitWithEncoding(encoding, false);
decoder->Decode(aInput.BeginReading(), aInput.Length(), false,
decoder->Decode(aInput, len.value(), false,,
aOutput, rv);
return rv.StealNSResult();
}