diff options
Diffstat (limited to 'src/util/slice.rs')
-rw-r--r-- | src/util/slice.rs | 47 |
1 files changed, 1 insertions, 46 deletions
diff --git a/src/util/slice.rs b/src/util/slice.rs index 54524c3..0734d78 100644 --- a/src/util/slice.rs +++ b/src/util/slice.rs @@ -1,55 +1,10 @@ //! Deal with bytes. use crate::event::{Event, Kind, Point}; -use crate::util::{ - classify_character::{classify_opt, Kind as CharacterKind}, - constant::TAB_SIZE, -}; +use crate::util::constant::TAB_SIZE; use alloc::string::String; use core::str; -/// Get a [`char`][] right before `index` in bytes (`&[u8]`). -/// -/// In most cases, markdown operates on ASCII bytes. -/// In a few cases, it is unicode aware, so we need to find an actual char. -pub fn char_before_index(bytes: &[u8], index: usize) -> Option<char> { - let start = if index < 4 { 0 } else { index - 4 }; - String::from_utf8_lossy(&bytes[start..index]).chars().last() -} - -/// Get a [`char`][] right at `index` in bytes (`&[u8]`). -/// -/// In most cases, markdown operates on ASCII bytes. -/// In a few cases, it is unicode aware, so we need to find an actual char. -pub fn char_after_index(bytes: &[u8], index: usize) -> Option<char> { - let end = if index + 4 > bytes.len() { - bytes.len() - } else { - index + 4 - }; - String::from_utf8_lossy(&bytes[index..end]).chars().next() -} - -/// Classify a byte (or `char`). -pub fn byte_to_kind(bytes: &[u8], index: usize) -> CharacterKind { - if index == bytes.len() { - CharacterKind::Whitespace - } else { - let byte = bytes[index]; - if byte.is_ascii_whitespace() { - CharacterKind::Whitespace - } else if byte.is_ascii_punctuation() { - CharacterKind::Punctuation - } else if byte.is_ascii_alphanumeric() { - CharacterKind::Other - } else { - // Otherwise: seems to be an ASCII control, so it seems to be a - // non-ASCII `char`. - classify_opt(char_after_index(bytes, index)) - } - } -} - /// A range between two points. #[derive(Debug)] pub struct Position<'a> { |