35 lines
1.0 KiB
Rust
35 lines
1.0 KiB
Rust
#![deny(unused_results)]
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pub use chain::*;
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pub use error::*;
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pub use vaa::*;
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pub mod chain;
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pub mod vaa;
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#[macro_use]
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pub mod error;
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/// Helper method that attempts to parse and truncate UTF-8 from a byte stream. This is useful when
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/// the wire data is expected to contain UTF-8 that is either already truncated, or needs to be,
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/// while still maintaining the ability to render.
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///
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/// This should be used to parse any Text-over-Wormhole fields that are meant to be human readable.
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pub(crate) fn parse_fixed_utf8<T: AsRef<[u8]>, const N: usize>(s: T) -> Option<String> {
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use bstr::ByteSlice;
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use std::io::Cursor;
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use std::io::Read;
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// Read Bytes.
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let mut cursor = Cursor::new(s.as_ref());
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let mut buffer = vec![0u8; N];
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cursor.read_exact(&mut buffer).ok()?;
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buffer.retain(|&c| c != 0);
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// Attempt UTF-8 Decoding. Stripping invalid Unicode characters (0xFFFD).
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let mut buffer: Vec<char> = buffer.chars().collect();
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buffer.retain(|&c| c != '\u{FFFD}');
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Some(buffer.iter().collect())
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}
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