diff options
Diffstat (limited to 'vendor/generic-array-0.12.4/src/hex.rs')
-rw-r--r-- | vendor/generic-array-0.12.4/src/hex.rs | 102 |
1 files changed, 0 insertions, 102 deletions
diff --git a/vendor/generic-array-0.12.4/src/hex.rs b/vendor/generic-array-0.12.4/src/hex.rs deleted file mode 100644 index 3ef92b1b9..000000000 --- a/vendor/generic-array-0.12.4/src/hex.rs +++ /dev/null @@ -1,102 +0,0 @@ -//! Generic array are commonly used as a return value for hash digests, so -//! it's a good idea to allow to hexlify them easily. This module implements -//! `std::fmt::LowerHex` and `std::fmt::UpperHex` traits. -//! -//! Example: -//! -//! ```rust -//! # #[macro_use] -//! # extern crate generic_array; -//! # extern crate typenum; -//! # fn main() { -//! let array = arr![u8; 10, 20, 30]; -//! assert_eq!(format!("{:x}", array), "0a141e"); -//! # } -//! ``` -//! - -use {ArrayLength, GenericArray}; -use core::cmp::min; -use core::fmt; -use core::ops::Add; -use core::str; -use typenum::*; - -static LOWER_CHARS: &'static [u8] = b"0123456789abcdef"; -static UPPER_CHARS: &'static [u8] = b"0123456789ABCDEF"; - -impl<T: ArrayLength<u8>> fmt::LowerHex for GenericArray<u8, T> -where - T: Add<T>, - <T as Add<T>>::Output: ArrayLength<u8>, -{ - fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { - let max_digits = f.precision().unwrap_or_else(|| self.len() * 2); - let max_hex = (max_digits >> 1) + (max_digits & 1); - - if T::to_usize() < 1024 { - // For small arrays use a stack allocated - // buffer of 2x number of bytes - let mut res = GenericArray::<u8, Sum<T, T>>::default(); - - for (i, c) in self.iter().take(max_hex).enumerate() { - res[i * 2] = LOWER_CHARS[(c >> 4) as usize]; - res[i * 2 + 1] = LOWER_CHARS[(c & 0xF) as usize]; - } - f.write_str(unsafe { str::from_utf8_unchecked(&res[..max_digits]) })?; - } else { - // For large array use chunks of up to 1024 bytes (2048 hex chars) - let mut buf = [0u8; 2048]; - let mut digits_left = max_digits; - - for chunk in self[..max_hex].chunks(1024) { - for (i, c) in chunk.iter().enumerate() { - buf[i * 2] = LOWER_CHARS[(c >> 4) as usize]; - buf[i * 2 + 1] = LOWER_CHARS[(c & 0xF) as usize]; - } - let n = min(chunk.len() * 2, digits_left); - f.write_str(unsafe { str::from_utf8_unchecked(&buf[..n]) })?; - digits_left -= n; - } - } - Ok(()) - } -} - -impl<T: ArrayLength<u8>> fmt::UpperHex for GenericArray<u8, T> -where - T: Add<T>, - <T as Add<T>>::Output: ArrayLength<u8>, -{ - fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { - let max_digits = f.precision().unwrap_or_else(|| self.len() * 2); - let max_hex = (max_digits >> 1) + (max_digits & 1); - - if T::to_usize() < 1024 { - // For small arrays use a stack allocated - // buffer of 2x number of bytes - let mut res = GenericArray::<u8, Sum<T, T>>::default(); - - for (i, c) in self.iter().take(max_hex).enumerate() { - res[i * 2] = UPPER_CHARS[(c >> 4) as usize]; - res[i * 2 + 1] = UPPER_CHARS[(c & 0xF) as usize]; - } - f.write_str(unsafe { str::from_utf8_unchecked(&res[..max_digits]) })?; - } else { - // For large array use chunks of up to 1024 bytes (2048 hex chars) - let mut buf = [0u8; 2048]; - let mut digits_left = max_digits; - - for chunk in self[..max_hex].chunks(1024) { - for (i, c) in chunk.iter().enumerate() { - buf[i * 2] = UPPER_CHARS[(c >> 4) as usize]; - buf[i * 2 + 1] = UPPER_CHARS[(c & 0xF) as usize]; - } - let n = min(chunk.len() * 2, digits_left); - f.write_str(unsafe { str::from_utf8_unchecked(&buf[..n]) })?; - digits_left -= n; - } - } - Ok(()) - } -} |