Function upsert_host_block

crates/openshell-cli/src/ssh.rs:1533–1568

(contents: &str, alias: &str, block: &str)

}

fn upsert_host_block(contents: &str, alias: &str, block: &str) -> String {
    let lines: Vec<&str> = contents.lines().collect();
    let start = lines.iter().position(|line| host_line_matches(line, alias));

    let mut out = Vec::new();
    if let Some(start) = start {
        let end = lines
            .iter()
            .enumerate()
            .skip(start + 1)
            .find(|(_, line)| line.trim_start().starts_with("Host "))
            .map_or(lines.len(), |(idx, _)| idx);

        out.extend_from_slice(&lines[..start]);
        if !out.is_empty() && !out.last().is_some_and(|line| line.is_empty()) {
            out.push("");
        }
        out.extend(block.lines());
        if end < lines.len() && !lines[end..].first().is_some_and(|line| line.is_empty()) {
            out.push("");
        }
        out.extend_from_slice(&lines[end..]);
    } else {
        out.extend_from_slice(&lines);
        if !out.is_empty() && !out.last().is_some_and(|line| line.is_empty()) {
            out.push("");
        }
        out.extend(block.lines());
    }

    let mut rendered = out.join("\n");
    if !rendered.is_empty() {
        rendered.push('\n');
    }
    rendered
}

pub fn install_ssh_config(gateway: &str, name: &str) -> Result<PathBuf> {
    let managed_config = openshell_ssh_config_path()?;