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trim_multiline: ignore empty lines

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This commit is contained in:
Manish Goregaokar 2015-08-13 19:29:12 +05:30
parent dece5a6cb5
commit 5ce8e7ba85
1 changed files with 7 additions and 4 deletions
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7
src/utils.rs
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@ -70,12 +70,15 @@ pub fn trim_multiline<'a>(s: Cow<'a, str>, ignore_first: bool) -> Cow<'a, str> {
fn trim_multiline_inner<'a>(s: Cow<'a, str>, ignore_first: bool, ch: char) -> Cow<'a, str> {
let x = s.lines().skip(ignore_first as usize)
.map(|l| l.char_indices()
.filter_map(|l| { if l.len() > 0 { // ignore empty lines
Some(l.char_indices()
.find(|&(_,x)| x != ch)
.unwrap_or((l.len(), ch)).0)
} else {None}})
.min().unwrap_or(0);
if x > 0 {
Cow::Owned(s.lines().enumerate().map(|(i,l)| if ignore_first && i==0 {
Cow::Owned(s.lines().enumerate().map(|(i,l)| if (ignore_first && i == 0) ||
l.len() == 0 {
l
} else {
l.split_at(x).1