Flexible download library and CLI intended to be fast, reliable, and easy to use.

cargo install odl

odl https://example.com/file.zip

This project provides both a command-line program (odl) and a Rust library (odl crate). Use the CLI for quick downloads and scripting; use the library when you need programmatic control inside an application.

• Download a single remote file (URL)

# Download a single URL and use the server-provided filename
odl https://example.com/file.zip

# Specify output file path
odl https://example.com/file.zip -o /path/to/save/file.zip

• Download from a remote list (URL pointing to a newline-separated list of URLs)

# Treat the input as a remote list of URLs and save downloaded files into a directory
odl --remote-list https://example.com/list.txt -o /downloads

• Download from a local file containing URLs

# Input file contains one URL per line; output is a directory
odl /path/to/urls.txt -o /downloads

• Temporary (one-off) configuration via CLI flags

# Limit max connections for this single run
odl --max-connections 4 https://example.com/file.zip

# Temporary speed limit (per run). Accepts either a raw byte count or a human‑readable value with units; input is case‑insensitive.
# All different representations work the same: KiB, K, KB
odl --speed-limit 100K https://example.com/file.zip

• Persistent configuration (save changes to config file)

The CLI provides a config subcommand that updates the persistent configuration (default config path is odl/config.toml inside the user's appdata directory). Changes made with odl config are saved and used by subsequent runs.

# Show current configuration and its location
odl config --show

# Set persistent max connections
odl config --max-connections 8

# Use a specific config file and change a value there
odl config --config-file ~/.config/odl/config.toml --max-connections 6

# Then you can use it for a new download:
odl --config-file ~/.config/odl/config.toml https://example.com/file.zip

Note: Flags passed directly to odl (for example --max-connections, --speed-limit, --user-agent, etc.) apply only to that invocation and override persistent configuration for that run.

use odl::config::Config;
use odl::download_manager::DownloadManager;
use reqwest::Url;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
  // Create manager with default config
  let cfg = Config::default();
  let manager = DownloadManager::new(cfg);

  // Implement or reuse a SaveConflictResolver and ServerConflictResolver
  // (omitted for brevity). Then evaluate and download:
  // let instruction = manager.evaluate(url, save_dir, None, &resolver).await?;
  // let path = manager.download(instruction, &server_resolver).await?;
  Ok(())
}

• Open source multi-platform desktop application based on ODL

Inspired by:

• dlm
• trauma
• AB Download Manager

Any contribution intentionally submitted for inclusion in the work by you, shall be licensed as MIT as in the LICENSE file, without any additional terms or conditions.