Function current_state_replacements

atomic-cli/src/commands/git/parallel.rs:1816–1855

(
    indexed: &ImportIndexedFile,
    new_content: &[u8],
)

}

fn current_state_replacements(
    indexed: &ImportIndexedFile,
    new_content: &[u8],
) -> Vec<GitReplacementBlock> {
    let old_lines = &indexed.lines;
    let new_lines: Vec<Vec<u8>> = split_graph_first_lines(new_content)
        .into_iter()
        .map(|line| line.to_vec())
        .collect();

    let mut prefix = 0usize;
    while prefix < old_lines.len()
        && prefix < new_lines.len()
        && old_lines[prefix].content == new_lines[prefix]
    {
        prefix += 1;
    }

    let mut suffix = 0usize;
    while suffix < old_lines.len().saturating_sub(prefix)
        && suffix < new_lines.len().saturating_sub(prefix)
        && old_lines[old_lines.len() - 1 - suffix].content
            == new_lines[new_lines.len() - 1 - suffix]
    {
        suffix += 1;
    }

    let old_mid_len = old_lines.len().saturating_sub(prefix + suffix);
    let new_mid_end = new_lines.len().saturating_sub(suffix);
    if old_mid_len == 0 && prefix == new_mid_end {
        return Vec::new();
    }

    vec![GitReplacementBlock {
        old_start: if old_mid_len == 0 { prefix } else { prefix + 1 },
        old_len: old_mid_len,
        new_start: prefix + 1,
        new_lines: new_lines[prefix..new_mid_end].to_vec(),
    }]
}

fn parse_git_diff_replacements(lines: &[GitDiffLine]) -> Option<Vec<GitReplacementBlock>> {
    let mut blocks = Vec::new();