A simple, lightweight Ruby gem for parsing command-line options with an intuitive DSL.
Slop is a Ruby library for parsing command-line options with a straightforward DSL. It helps developers define, validate, and access command-line arguments in Ruby scripts or applications, reducing the complexity of manual argument handling.
Ruby developers building command-line tools, scripts, or applications that require robust and user-friendly option parsing.
Developers choose Slop for its intuitive syntax, built-in type support, and extensible design, which streamline CLI development without the overhead of more complex parsing libraries.
Simple Lightweight Option Parsing - ✨ new contributors welcome ✨
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The block-based syntax with methods like o.string and o.bool makes option definition straightforward and readable, as shown in the primary usage example.
Includes built-in types for strings, integers, arrays, and symbols, handling conversions automatically without extra code.
Allows creating custom option classes with call and finish methods for specialized parsing, enabling advanced use cases as demonstrated in the custom types section.
Formats help text with aligned descriptions based on defined options, reducing manual documentation effort.
Type validation is disabled by default, requiring explicit enablement with validate_types: true to catch invalid arguments, which can lead to silent bugs.
Custom behaviors or low-level configurations necessitate using the more verbose Slop::Options and Slop::Parser API, adding complexity compared to the simple DSL.
Lacks native support for subcommand parsing, forcing developers to implement manual workarounds for hierarchical CLI structures.