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Implement string stripping utilities from the Infra spec

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This commit is contained in:
Keith Yeung 2017-10-21 05:12:04 -07:00
parent c494d25e24
commit 9d60333af9
2 changed files with 26 additions and 0 deletions
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23
components/script/dom/bindings/str.rs
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@ -186,6 +186,29 @@ impl DOMString {
pub fn bytes(&self) -> Bytes {
self.0.bytes()
}
/// Removes newline characters according to <https://infra.spec.whatwg.org/#strip-newlines>.
pub fn strip_newlines(&mut self) {
self.0.retain(|c| c != '\r' && c != '\n');
}
/// Removes leading and trailing ASCII whitespaces according to
/// <https://infra.spec.whatwg.org/#strip-leading-and-trailing-ascii-whitespace>.
pub fn strip_leading_and_trailing_ascii_whitespace(&mut self) {
if self.0.len() == 0 { return; }
let last_non_whitespace = match self.0.rfind(|ref c| !char::is_ascii_whitespace(c)) {
Some(idx) => idx + 1,
None => {
self.0.clear();
return;
}
};
let first_non_whitespace = self.0.find(|ref c| !char::is_ascii_whitespace(c)).unwrap();
self.0.truncate(last_non_whitespace);
let _ = self.0.splice(0..first_non_whitespace, "");
}
}
impl Borrow<str> for DOMString {