mirror of
https://github.com/nushell/nushell
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28 lines
733 B
Rust
28 lines
733 B
Rust
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use std::fmt::Write;
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use nu_ansi_term::{Color, Style};
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use similar::{ChangeTag, TextDiff};
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/// Generate a stylized diff of different lines between two strings
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pub(crate) fn diff_by_line(old: &str, new: &str) -> String {
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let mut out = String::new();
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let diff = TextDiff::from_lines(old, new);
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for change in diff.iter_all_changes() {
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let style = match change.tag() {
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ChangeTag::Equal => Style::new(),
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ChangeTag::Delete => Color::Red.into(),
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ChangeTag::Insert => Color::Green.into(),
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};
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let _ = write!(
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out,
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"{}{}",
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style.paint(change.tag().to_string()),
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style.paint(change.value()),
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);
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}
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out
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}
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