26 lines
643 B
Rust
26 lines
643 B
Rust
/// Heuristically determine if the given data is a binary or a text file's
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/// content.
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///
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/// Only text inputs can be reconciled using the crate's functions.
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#[must_use]
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pub fn is_binary(data: &[u8]) -> bool {
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if data.contains(&0) {
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// Even though the NUL character is valid in UTF-8, it's highly suspicious in
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// human-readable text.
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return true;
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}
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std::str::from_utf8(data).is_err()
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn test_is_binary() {
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assert!(is_binary(&[0, 159, 146, 150]));
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assert!(is_binary(&[0, 12]));
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assert!(!is_binary(b"hello"));
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}
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}
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