| use annotate_snippets::renderer::{AnsiColor, Color, Style}; |
| use difference::{Changeset, Difference}; |
| |
| const GREEN: Style = AnsiColor::Green.on_default(); |
| 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.render(), GREEN.render_reset()); |
| let Changeset { diffs, .. } = Changeset::new(y, x, " "); |
| for c in diffs { |
| match c { |
| Difference::Same(ref z) => { |
| output += &format!( |
| "{}{}{} ", |
| GREEN.render(), |
| z.as_str(), |
| GREEN.render_reset() |
| ); |
| } |
| Difference::Add(ref z) => { |
| let black_on_green = Style::new() |
| .bg_color(Some(Color::Ansi(AnsiColor::Green))) |
| .fg_color(Some(Color::Ansi(AnsiColor::Black))); |
| output += &format!( |
| "{}{}{} ", |
| black_on_green.render(), |
| z.as_str(), |
| black_on_green.render_reset() |
| ); |
| } |
| _ => (), |
| } |
| } |
| output += "\n"; |
| } |
| _ => { |
| output += &format!( |
| "+{}{}{}\n", |
| GREEN.render(), |
| x.as_str(), |
| GREEN.render_reset() |
| ); |
| } |
| }; |
| } |
| Difference::Rem(ref x) => { |
| let red = AnsiColor::Red.on_default(); |
| output += &format!("-{}{}{}\n", red.render(), x.as_str(), red.render_reset()); |
| } |
| } |
| } |
| output |
| } |