From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:02:58 +0200 Subject: Adding upstream version 1.64.0+dfsg1. Signed-off-by: Daniel Baumann --- vendor/bytes/src/fmt/debug.rs | 49 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 vendor/bytes/src/fmt/debug.rs (limited to 'vendor/bytes/src/fmt/debug.rs') diff --git a/vendor/bytes/src/fmt/debug.rs b/vendor/bytes/src/fmt/debug.rs new file mode 100644 index 000000000..a8545514e --- /dev/null +++ b/vendor/bytes/src/fmt/debug.rs @@ -0,0 +1,49 @@ +use core::fmt::{Debug, Formatter, Result}; + +use super::BytesRef; +use crate::{Bytes, BytesMut}; + +/// Alternative implementation of `std::fmt::Debug` for byte slice. +/// +/// Standard `Debug` implementation for `[u8]` is comma separated +/// list of numbers. Since large amount of byte strings are in fact +/// ASCII strings or contain a lot of ASCII strings (e. g. HTTP), +/// it is convenient to print strings as ASCII when possible. +impl Debug for BytesRef<'_> { + fn fmt(&self, f: &mut Formatter<'_>) -> Result { + write!(f, "b\"")?; + for &b in self.0 { + // https://doc.rust-lang.org/reference/tokens.html#byte-escapes + if b == b'\n' { + write!(f, "\\n")?; + } else if b == b'\r' { + write!(f, "\\r")?; + } else if b == b'\t' { + write!(f, "\\t")?; + } else if b == b'\\' || b == b'"' { + write!(f, "\\{}", b as char)?; + } else if b == b'\0' { + write!(f, "\\0")?; + // ASCII printable + } else if b >= 0x20 && b < 0x7f { + write!(f, "{}", b as char)?; + } else { + write!(f, "\\x{:02x}", b)?; + } + } + write!(f, "\"")?; + Ok(()) + } +} + +impl Debug for Bytes { + fn fmt(&self, f: &mut Formatter<'_>) -> Result { + Debug::fmt(&BytesRef(&self.as_ref()), f) + } +} + +impl Debug for BytesMut { + fn fmt(&self, f: &mut Formatter<'_>) -> Result { + Debug::fmt(&BytesRef(&self.as_ref()), f) + } +} -- cgit v1.2.3