[wasm] feat: return -1 when file is not NCM
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@ -19,22 +19,25 @@ impl JsNCMFile {
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/// Open NCM file.
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/// If everything is ok, return `0`.
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/// If it needs more header bytes, return positive integer.
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/// If it was not a valid NCM file, return -1.
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///
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/// # Arguments
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///
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/// * `header`: Header bytes of NCM file.
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///
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/// returns: Result<usize, JsError>
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/// returns: Result<i32, JsError>
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///
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/// If it needs more bytes, the new header size will be returned.
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/// If the header was large enough, it will return 0.
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pub fn open(&mut self, header: &[u8]) -> Result<usize, JsError> {
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pub fn open(&mut self, header: &[u8]) -> Result<i32, JsError> {
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match NCMFile::new(header) {
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Ok(ncm) => {
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self.ncm = Some(ncm);
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Ok(0)
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}
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Err(NetEaseCryptoError::HeaderTooSmall(n)) => Ok(n),
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Err(NetEaseCryptoError::HeaderTooSmall(n)) => Ok(n as i32),
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Err(NetEaseCryptoError::NotNCMFile) => Ok(-1),
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Err(err) => Err(JsError::new(err.to_string().as_str())),
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}
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}
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