Function create_tree

lib/functions.rs:142–182

Create a tree based on a sequence of lines describing the tree structure inside the given directory Example: ```rust use untree::*; use std::io::{BufRead, BufReader, stdin, Lines}; let options = UntreeOptions::new() .dry_run(true) .verbose(true); let lines = BufReader::new(stdin()).lines(); create_tree("path/to/directory", lines, options)?; # Ok::<(), Error>(()) ```

(
    directory: impl Into<PathBuf>,
    mut lines: Lines<impl BufRead>,
    options: UntreeOptions,
)

/// # Ok::<(), Error>(())
/// ```
pub fn create_tree(
    directory: impl Into<PathBuf>,
    mut lines: Lines<impl BufRead>,
    options: UntreeOptions,
) -> Result<()> {
    let mut path = directory.into();

    let mut old_depth = 0;

    // Get the first line
    if let Some(result) = lines.next() {
        let line = result?;
        let (depth, filename) = get_entry(line.as_ref());
        path.push(filename);
        path = normalize_path(path.as_path());
        old_depth = depth;
    }

    // Get remaining lines
    for result in lines {
        let line = result?;
        if line.is_empty() {
            break;
        }
        let (depth, filename) = get_entry(line.as_ref());
        if depth <= old_depth {
            create_path(path.as_path(), FilePath, options)?;
            for _ in depth..old_depth {
                path.pop();
            }
            path.set_file_name(filename);
        } else {
            create_path(path.as_path(), Directory, options)?;
            path.push(filename);
        }
        old_depth = depth;
    }

    // Create file for last line
    create_path(path.as_path(), FilePath, options)
}