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Trim leading contiguous whitespace, fix nightly clippy warns #41
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Like we just did in Rustls and webpki, _always_ opt-in to no_std, and then import the std prelude in tests where necessary. This resolves some nightly clippy warnings about redundant imports that will arise otherwise
djc
reviewed
Feb 27, 2024
djc
reviewed
Feb 29, 2024
RFC 7468 §2[0] says: > parsers SHOULD ignore whitespace Previously we only stripped the trailing whitespace from the base64 content lines within the PEM section boundaries. This branch updates our processing to additionally trim leading contiguous whitespace. This felt more sensible than outright ignoring whitespace (e.g. from the middle of content) and will be sufficient to resolve the real world PEM files we've seen with leading whitespace. We base our implementation on the stdlib's unstable `[u8]::trim_ascii` fn, which we can't (yet) use directly due to our MSRV/stable rust requirements. A TODO is left for future cleanup. [0]: https://www.rfc-editor.org/rfc/rfc7468#section-2
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djc
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RFC 7468 §2 says:
Previously we only stripped the trailing whitespace from the base64 content lines within the PEM section boundaries. This branch updates our processing to additionally trim leading contiguous whitespace. This felt more sensible than outright ignoring whitespace (e.g. from the middle of content) and will be sufficient to resolve #40
We base our implementation on the stdlib's unstable
[u8]::trim_asciifn, which we can't (yet) use directly due to our MSRV/stable rust requirements. A TODO is left for future cleanup. Notably this broadens our definition of what whitespace is slightly (e.g. including\t).Along the way I noticed CI for main is failing on nightly clippy due to redundant import findings. I've applied the same fix strategy we used for Rustls (rustls/rustls#1813) and Webpki (rustls/webpki#234) to resolve this.