pub fn transpile_directory(
    current_dir: &Path,
    maybe_in: Option<&str>,
    maybe_out: Option<&str>
) -> Result<PathBuf, Vec<(String, String)>> {
    let src_path = maybe_in.map_or(current_dir.join(IN_FILE), |p| current_dir.join(p));
    let out_dir = current_dir.join(maybe_out.unwrap_or(OUT_FILE));
    if !out_dir.exists() {
        create_dir(&out_dir).map_err(|e| vec![(String::from("io"), e.to_string())])?;
    }
    info!("Input is '{}'", src_path.display());
    info!("Output will be stored in '{}'", out_dir.display());

    let relative_paths = io::relative_files(src_path.as_path()).map_err(|error| vec![error])?;
    let in_absolute_paths = if src_path.is_dir() {
        relative_paths.iter().map(|os_string| src_path.join(os_string)).collect()
    } else {
        vec![src_path]
    };
    let out_absolute_paths: Vec<PathBuf> =
        relative_paths.iter().map(|os_string| out_dir.join(os_string)).collect();

    info!(
        "Transpiling {} file {}",
        out_absolute_paths.len(),
        if out_absolute_paths.len() > 1 { "s" } else { "" }
    );

    let mut sources = vec![];
    for source_path in in_absolute_paths.clone() {
        let source = io::read_source(&source_path).map_err(|error| vec![error])?;
        sources.push(source);
    }

    let source_pairs = sources.iter().zip(in_absolute_paths.iter());
    let source_option_pairs: Vec<_> =
        source_pairs.map(|(source, path)| (source.clone(), Some(path.clone()))).collect();
    let mamba_source = mamba_to_python(source_option_pairs.as_slice())?;

    for (source, out_path) in mamba_source.iter().zip(out_absolute_paths) {
        let out_path = out_path.with_extension("py");
        io::write_source(source, &out_path).map_err(|error| vec![error])?;
    }

    Ok(out_dir)
}
/// Convert `*.mamba` files to `*.py`.
///
/// For input, the rules are as follows:
/// If file, file taken as input.
/// If directory, recursively search all sub-directories for mamba files.
/// If no input given, current directory taken is directory.
///
/// For output, the rules are as follows:
/// Output directory to story mamba files.
/// Output directory structure reflects input directory structure.
/// If no output given, target directory created in current directory and output
/// stored here.
Convert `*.mamba` files to `*.py`.
For input, the rules are as follows:
If file, file taken as input.
If directory, recursively search all sub-directories for mamba files.
If no input given, current directory taken is directory.

For output, the rules are as follows:
Output directory to story mamba files.
Output directory structure reflects input directory structure.
If no output given, target directory created in current directory and output
stored here.
Convert ` * . mamba ` files to ` * . py ` . For input the rules are as follows : If file file taken as input . If directory recursively search all sub - directories for mamba files . If no input given current directory taken is directory . For output the rules are as follows : Output directory to story mamba files . Output directory structure reflects input directory structure . If no output given target directory created in current directory and output stored here .
pub fn transpile_directory(
    current_dir: &Path,
    maybe_in: Option<&str>,
    maybe_out: Option<&str>
) -> Result<PathBuf, Vec<(String, String)>> {
    let src_path = maybe_in.map_or(current_dir.join(IN_FILE), |p| current_dir.join(p));
    let out_dir = current_dir.join(maybe_out.unwrap_or(OUT_FILE));
    if !out_dir.exists() {
        create_dir(&out_dir).map_err(|e| vec![(String::from("io"), e.to_string())])?;
    }
    info!("Input is '{}'", src_path.display());
    info!("Output will be stored in '{}'", out_dir.display());
    let relative_paths = io::relative_files(src_path.as_path()).map_err(|error| vec![error])?;
    let in_absolute_paths = if src_path.is_dir() {
        relative_paths.iter().map(|os_string| src_path.join(os_string)).collect()
    } else {
        vec![src_path]
    };
    let out_absolute_paths: Vec<PathBuf> =
        relative_paths.iter().map(|os_string| out_dir.join(os_string)).collect();
    info!(
        "Transpiling {} file {}",
        out_absolute_paths.len(),
        if out_absolute_paths.len() > 1 { "s" } else { "" }
    );
    let mut sources = vec![];
    for source_path in in_absolute_paths.clone() {
        let source = io::read_source(&source_path).map_err(|error| vec![error])?;
        sources.push(source);
    }
    let source_pairs = sources.iter().zip(in_absolute_paths.iter());
    let source_option_pairs: Vec<_> =
        source_pairs.map(|(source, path)| (source.clone(), Some(path.clone()))).collect();
    let mamba_source = mamba_to_python(source_option_pairs.as_slice())?;
    for (source, out_path) in mamba_source.iter().zip(out_absolute_paths) {
        let out_path = out_path.with_extension("py");
        io::write_source(source, &out_path).map_err(|error| vec![error])?;
    }
    Ok(out_dir)
}
pub fn transpile_directory ( current_dir : & Path , maybe_in : Option < & str > , maybe_out : Option < & str > ) -> Result < PathBuf , Vec < ( String , String ) > > { let src_path = maybe_in . map_or ( current_dir . join ( IN_FILE ) , | p | current_dir . join ( p ) ) ; let out_dir = current_dir . join ( maybe_out . unwrap_or ( OUT_FILE ) ) ; if ! out_dir . exists ( ) { create_dir ( & out_dir ) . map_err ( | e | vec ! [ ( String from ( " " ) e to_string ( ) ) ] ) ? ; } info ! ( " " src_path display ( ) ) ; info ! ( " " out_dir display ( ) ) ; let relative_paths = io :: relative_files ( src_path . as_path ( ) ) . map_err ( | error | vec ! [ error ] ) ? ; let in_absolute_paths = if src_path . is_dir ( ) { relative_paths . iter ( ) . map ( | os_string | src_path . join ( os_string ) ) . collect ( ) } else { vec ! [ src_path ] } ; let out_absolute_paths : Vec < PathBuf > = relative_paths . iter ( ) . map ( | os_string | out_dir . join ( os_string ) ) . collect ( ) ; info ! ( " " out_absolute_paths len ( ) if out_absolute_paths len ( ) 1 { " " } else { " " } ) ; let mut sources = vec ! [ ] ; for source_path in in_absolute_paths . clone ( ) { let source = io :: read_source ( & source_path ) . map_err ( | error | vec ! [ error ] ) ? ; sources . push ( source ) ; } let source_pairs = sources . iter ( ) . zip ( in_absolute_paths . iter ( ) ) ; let source_option_pairs : Vec < _ > = source_pairs . map ( | ( source , path ) | ( source . clone ( ) , Some ( path . clone ( ) ) ) ) . collect ( ) ; let mamba_source = mamba_to_python ( source_option_pairs . as_slice ( ) ) ? ; for ( source , out_path ) in mamba_source . iter ( ) . zip ( out_absolute_paths ) { let out_path = out_path . with_extension ( " " ) ; io :: write_source ( source , & out_path ) . map_err ( | error | vec ! [ error ] ) ? ; } Ok ( out_dir ) }
Convert `*.mamba` files to `*.py`.
Convert ` * . mamba ` files to ` * . py ` .
current_dir
&Path
maybe_in
Option<&str>
maybe_out
Option<&str>