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Add pem_rfc7468::decode_label #22

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Merged
tarcieri merged 1 commit into from
Sep 14, 2021
Merged

Add pem_rfc7468::decode_label #22

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6 changes: 6 additions & 0 deletions pem-rfc7468/src/decoder.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -44,6 +44,12 @@ fn decode_encapsulated_text<'i, 'o>(
}
Ok(())
}
/// Decode the encapsulation boundaries of a PEM document according to RFC 7468's "Strict" grammar.
///
/// On success, returning the decoded label.
pub fn decode_label(pem: &[u8]) -> Result<&str> {
Ok(Encapsulation::try_from(pem)?.label())
}

/// Decode a PEM document according to RFC 7468's "Strict" grammar.
///
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2 changes: 1 addition & 1 deletion pem-rfc7468/src/lib.rs
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Expand Up @@ -112,7 +112,7 @@ mod error;
mod grammar;

pub use crate::{
decoder::decode,
decoder::{decode, decode_label},
encoder::{encode, encoded_len, LineEnding},
error::{Error, Result},
};
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4 changes: 4 additions & 0 deletions pem-rfc7468/tests/decode.rs
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Expand Up @@ -17,6 +17,8 @@ fn pkcs1_enc_example() {
Err(pem_rfc7468::Error::HeaderDetected) => (),
_ => panic!("Expected HeaderDetected error"),
}
let label = pem_rfc7468::decode_label(pem).unwrap();
assert_eq!(label, "RSA PRIVATE KEY");
}

#[test]
Expand All @@ -37,6 +39,8 @@ fn header_of_length_64() {
Err(pem_rfc7468::Error::HeaderDetected) => (),
_ => panic!("Expected HeaderDetected error"),
}
let label = pem_rfc7468::decode_label(pem).unwrap();
assert_eq!(label, "RSA PRIVATE KEY");
}

#[test]
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