tinytools 1.1.2

A collection of tools that enhance your experience in shell.
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use std::path::{Component, Path, PathBuf};

pub fn normalize_path(path: &Path) -> PathBuf {
    let mut components = path.components().peekable();
    let mut ret =
        if let Some(c @ Component::Prefix(..)) = components.peek().cloned() {
            components.next();
            PathBuf::from(c.as_os_str())
        } else {
            PathBuf::new()
        };

    for component in components {
        match component {
            Component::Prefix(..) => unreachable!(),
            Component::RootDir => {
                ret.push(component.as_os_str());
            }
            Component::CurDir => {}
            Component::ParentDir => {
                ret.pop();
            }
            Component::Normal(c) => {
                ret.push(c);
            }
        }
    }

    ret
}

/// Validates a vector of paths.
///
/// Returns error on:
///
///     - Empty input vector
///     - Non-existing path in input vector
pub fn validate_paths(sources: Vec<PathBuf>) -> Result<(), String> {
    // Check for validity of given source paths.
    let mut invalid_sources: Vec<PathBuf> = Vec::new();
    for source in sources.iter() {
        if !source.is_file() && !source.is_dir() {
            invalid_sources.push(source.to_path_buf());
        }
    }
    if invalid_sources.len() > 0 {
        eprintln!(
            "The following input paths are invalid:\n{:#?}",
            invalid_sources
        );
        eprintln!("Nothing done");
        return Err("Invalid path(s)".to_string());
    }

    Ok(())
}

// Author: Blurgy <gy@blurgy.xyz>
// Date:   Jul 02 2021, 00:06 [CST]