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comparison rust/hg-core/src/utils.rs @ 47989:4d2a5ca060e3

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rust: Add a Filelog struct that wraps Revlog Some filelog-specific logic is moved from code `rhg cat` into this struct where it can better be reused. Additionally, a missing end delimiter for metadata causes an error to be returned instead of being silently ignored. Differential Revision: https://phab.mercurial-scm.org/D11408
author Simon Sapin <simon.sapin@octobus.net>
date Mon, 13 Sep 2021 15:42:39 +0200
parents 696abab107b4
children 5734b03ecf3e
comparison
equal deleted inserted replaced
47988:cfb6e6699b25 47989:4d2a5ca060e3
72 fn trim_end_matches(&self, f: impl FnMut(u8) -> bool) -> &Self; 72 fn trim_end_matches(&self, f: impl FnMut(u8) -> bool) -> &Self;
73 fn trim_start_matches(&self, f: impl FnMut(u8) -> bool) -> &Self; 73 fn trim_start_matches(&self, f: impl FnMut(u8) -> bool) -> &Self;
74 fn trim(&self) -> &Self; 74 fn trim(&self) -> &Self;
75 fn drop_prefix(&self, needle: &Self) -> Option<&Self>; 75 fn drop_prefix(&self, needle: &Self) -> Option<&Self>;
76 fn split_2(&self, separator: u8) -> Option<(&[u8], &[u8])>; 76 fn split_2(&self, separator: u8) -> Option<(&[u8], &[u8])>;
77 fn split_2_by_slice(&self, separator: &[u8]) -> Option<(&[u8], &[u8])>;
77 } 78 }
78 79
79 impl SliceExt for [u8] { 80 impl SliceExt for [u8] {
80 fn trim_end(&self) -> &[u8] { 81 fn trim_end(&self) -> &[u8] {
81 self.trim_end_matches(|byte| byte.is_ascii_whitespace()) 82 self.trim_end_matches(|byte| byte.is_ascii_whitespace())
131 fn split_2(&self, separator: u8) -> Option<(&[u8], &[u8])> { 132 fn split_2(&self, separator: u8) -> Option<(&[u8], &[u8])> {
132 let mut iter = self.splitn(2, |&byte| byte == separator); 133 let mut iter = self.splitn(2, |&byte| byte == separator);
133 let a = iter.next()?; 134 let a = iter.next()?;
134 let b = iter.next()?; 135 let b = iter.next()?;
135 Some((a, b)) 136 Some((a, b))
137 }
138
139 fn split_2_by_slice(&self, separator: &[u8]) -> Option<(&[u8], &[u8])> {
140 if let Some(pos) = find_slice_in_slice(self, separator) {
141 Some((&self[..pos], &self[pos + separator.len()..]))
142 } else {
143 None
144 }
136 } 145 }
137 } 146 }
138 147
139 pub trait Escaped { 148 pub trait Escaped {
140 /// Return bytes escaped for display to the user 149 /// Return bytes escaped for display to the user