sharkdp/hexyl

Hexyl is a command-line hex dump utility for Rust that displays file contents in a customizable hexadecimal format. It supports advanced visual features like gradient color schemes and environment-based theming, while offering flexible input handling via files or stdin. The system includes a library API for programmatic usage and robust integration testing to ensure output accuracy.

Users can now customize the appearance of hexyl output by setting environment variables (e.g., HEXYL\_COLOR\_NULL) to override default colors, and can choose between the 'Default' and 'Gradient' color schemes via the --color-scheme option. The 'Gradient' scheme applies a heatmap-like color progression to non-ASCII bytes and distinct gradients for non-printable ASCII characters, while the new \src/colors.rs\ module handles these dynamic color definitions and pre-rendered ANSI codes.

src · high confidence

Added a new \simple.rs\ example demonstrating how to use hexyl as a library via the \PrinterBuilder\ API. This example shows how to configure output options such as color display, character and position panels, border style, squeezing, panel count, and byte grouping directly from code.

examples · high confidence

Added integration tests for core hex dump functionality; Added test fixtures and configuration for example tests.

The CLI framework has been upgraded from clap 2 to clap 4, enabling the use of the derive API for argument parsing and introducing clap\_complete for shell completion generation. This update also replaces older dependencies like \ansi\_term\ and \atty\ with modern alternatives such as \owo-colors\, \supports-color\, and \anstream\, while updating the project to Rust edition 2021 and raising the minimum supported Rust version to 1.88. Additionally, \anyhow\ is now used for error handling, and Link Time Optimization (LTO) is enabled for release builds to improve performance.

(dependencies) · high confidence

Written by watchdog.canine.dev from the codebase's own history, inside the signed delivery this page is composed from.

• CAI 61 → 67 (+5.5)
• Rubric changed (rubric-2026.09.8 → rubric-2026.09.17) — scores are not directly comparable.

• Code Health 84 → 84 (+0.0)
• Architecture 100 → 100 (+0.0)
• Maturity 49 → 58 (+9.1)
• Readiness 68 → 68 (-0.4)
• Security 64 → 76 (+12.1)

• Documentation: no installation or build instructions (README.md)
• Hotspot: src/main.rs (src/main.rs)

• Inverted test pyramid
• Outdated: anyhow
• Outdated: clap
• Outdated: clap_complete
• Outdated: const_format
• Outdated: libc
• Outdated: owo-colors
• Outdated: supports-color
• Outdated: terminal_size

Written by watchdog.canine.dev from the codebase's own history, inside the signed delivery this page is composed from.

sharkdp/hexyl was measured the same way every project in this corpus was: the same rubric, at a pinned commit, with the result published in full. Point a surveyor at a repository you know and see whether you agree with it.