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use termimad::CompoundStyle;
use crate::{
patterns::Pattern,
};
pub struct MatchedString<'a> {
pub pattern: &'a Pattern,
pub string: &'a str,
pub base_style: &'a CompoundStyle,
pub match_style: &'a CompoundStyle,
}
impl Pattern {
pub fn style<'a>(
&'a self,
string: &'a str,
base_style: &'a CompoundStyle,
match_style: &'a CompoundStyle,
) -> MatchedString<'a> {
MatchedString {
pattern: self,
string,
base_style,
match_style,
}
}
}
impl<'a> MatchedString<'a> {
pub fn write_on<W>(&self, w: &mut W) -> Result<(), termimad::Error>
where W: std::io::Write
{
if self.pattern.is_some() {
if let Some(m) = self.pattern.find(self.string) {
let mut pos_idx: usize = 0;
let mut combined_style = self.base_style.clone();
combined_style.overwrite_with(self.match_style);
for (cand_idx, cand_char) in self.string.chars().enumerate() {
if pos_idx < m.pos.len() && m.pos[pos_idx] == cand_idx {
combined_style.queue(w, cand_char)?;
pos_idx += 1;
} else {
self.base_style.queue(w, cand_char)?;
}
}
return Ok(());
}
}
self.base_style.queue_str(w, self.string)
}
}
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