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use difference::{Changeset, Difference};
use yansi_term::Color::{Black, Green, Red};
pub fn get_diff(left: &str, right: &str) -> String {
let mut output = String::new();
let Changeset { diffs, .. } = Changeset::new(left, right, "\n");
for i in 0..diffs.len() {
match diffs[i] {
Difference::Same(ref x) => {
output += &format!(" {}\n", x);
}
Difference::Add(ref x) => {
match diffs[i - 1] {
Difference::Rem(ref y) => {
output += &format!("{}", Green.paint("+"));
let Changeset { diffs, .. } = Changeset::new(y, x, " ");
for c in diffs {
match c {
Difference::Same(ref z) => {
output += &format!("{} ", Green.paint(z.as_str()));
}
Difference::Add(ref z) => {
output += &format!("{} ", Black.on(Green).paint(z.as_str()));
}
_ => (),
}
}
output += "\n";
}
_ => {
output += &format!("+{}\n", Green.paint(x.as_str()));
}
};
}
Difference::Rem(ref x) => {
output += &format!("-{}\n", Red.paint(x.as_str()));
}
}
}
output
}
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