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std::fs; +use std::io::{self, Read, Write}; +use std::path::{Path, PathBuf}; +use std::collections::VecDeque; +use colored::Colorize; +use indicatif::{ProgressBar, ProgressStyle}; +use anyhow::Result; +use walkdir::WalkDir; +use glob::glob; +use clap::Parser; +use filetime::FileTime; + +#[derive(Parser, Debug)] +#[command( + name = "rcp", + version, + about = "A modern replacement for cp with progress bars", + long_about = None +)] +struct Args { + #[arg(required = true)] + sources: Vec, + + #[arg(required = true)] + dest: String, + + #[arg(short, long)] + recursive: bool, + + #[arg(short = 'n', long, default_value_t = 5)] + max_history: usize, + + #[arg(short, long)] + preserve: bool, +} + +fn create_file_progress_bar() -> ProgressBar { + ProgressBar::new(0).with_style( + ProgressStyle::with_template("{msg}\n[{bar:40.cyan/blue}] {bytes}/{total_bytes} ({eta})") + .unwrap() + .progress_chars("##-"), + ) +} + +fn create_summary_progress_bar() -> ProgressBar { + ProgressBar::new(0).with_style( + ProgressStyle::with_template("\n[{bar:40.green/yellow}] {pos}/{len} files") + .unwrap() + .progress_chars("##-"), + ) +} + +fn collect_files(sources: &[String], recursive: bool) -> Result> { + let mut all_files = Vec::new(); + for src_pattern in sources { + if src_pattern.contains('*') { + for entry in glob(src_pattern)? { + let path = entry?; + if path.is_dir() && !recursive { + eprintln!("{}: Skipping directory (use -r to copy)", path.display().to_string().yellow()); + continue; + } + all_files.push(path); + } + } else { + let path = PathBuf::from(src_pattern); + if !path.exists() { + return Err(anyhow::anyhow!("Source file not found: {}", path.display())); + } + if path.is_dir() && !recursive { + eprintln!("{}: Skipping directory (use -r to copy)", path.display().to_string().yellow()); + continue; + } + all_files.push(path); + } + } + + if recursive { + let mut dir_files = Vec::new(); + for path in &all_files { + if path.is_dir() { + for entry in WalkDir::new(path) { + match entry { + Ok(e) if e.file_type().is_file() => dir_files.push(e.into_path()), + Err(e) => eprintln!("{}: {}", "Warning".yellow(), e), + _ => continue, + } + } + } + } + all_files.extend(dir_files); + } + + if all_files.is_empty() { + return Err(anyhow::anyhow!("No files to copy")); + } + + Ok(all_files) +} + +fn copy_file_with_progress(src: &Path, dst: &Path, pb: &ProgressBar, preserve: bool) -> Result<()> { + let mut src_file = fs::File::open(src)?; + let file_size = src_file.metadata()?.len(); + pb.set_length(file_size); + + let mut dst_file = fs::File::create(dst)?; + let mut buffer = vec![0u8; 64 * 1024]; + let mut total_copied = 0; + + loop { + let bytes_read = src_file.read(&mut buffer)?; + if bytes_read == 0 { + break; + } + dst_file.write_all(&buffer[..bytes_read])?; + total_copied += bytes_read as u64; + pb.set_position(total_copied); + } + + if preserve { + let metadata = src_file.metadata()?; + filetime::set_file_times( + dst, + FileTime::from_last_access_time(&metadata), + FileTime::from_last_modification_time(&metadata), + )?; + } + + Ok(()) +} + +fn main() -> Result<()> { + let args = Args::parse(); + + let file_pb = create_file_progress_bar(); + let summary_pb = create_summary_progress_bar(); + + let all_files = collect_files(&args.sources, args.recursive)?; + let total_files = all_files.len(); + summary_pb.set_length(total_files as u64); + + let mut history = VecDeque::with_capacity(args.max_history); + let mut success_count = 0; + + for src in &all_files { + let dst = if PathBuf::from(&args.dest).is_dir() { + PathBuf::from(&args.dest).join( + src.file_name() + .unwrap_or_else(|| src.as_os_str()) + ) + } else { + PathBuf::from(&args.dest) + }; + + file_pb.reset(); + file_pb.set_message(format!("{}: {}", "Copying".bold().yellow(), src.display())); + + match copy_file_with_progress(src, &dst, &file_pb, args.preserve) { + Ok(_) => { + success_count += 1; + if history.len() >= args.max_history { + history.pop_front(); + } + history.push_back(format!("{}: {}", "Copied".green(), src.display())); + + println!("\x1B[2J\x1B[H"); // Clear screen + println!("{}", file_pb); + for item in &history { + println!("{}", item); + } + println!("{}", summary_pb); + } + Err(e) => { + eprintln!("{}: {}", "Error".red(), e); + } + } + summary_pb.inc(1); + } + + file_pb.finish_and_clear(); + summary_pb.finish_with_message( + format!("{} ({} successful, {} errors)", + "Copy complete".bold().green(), + success_count.to_string().green(), + (total_files - success_count).to_string().red() + ) + ); + + if success_count != total_files { + std::process::exit(1); + } + + Ok(()) +}