Crate fionn_cli 

fionn-cli

Command-line interface for fionn - a Swiss Army knife for JSON with SIMD acceleration.

Installation

cargo install fionn-cli

Usage

# Convert JSON to greppable format
fionn gron data.json

# Convert back to JSON
fionn gron -u data.gron

# Diff two JSON files
fionn diff old.json new.json

# Apply a JSON patch
fionn patch data.json changes.patch

# Merge JSON files
fionn merge base.json overlay.json

# Query JSON
fionn query '.users[0].name' data.json

# Format JSON
fionn format data.json
fionn format -c data.json  # compact

# Validate JSON
fionn validate data.json

# Infer schema
fionn schema data.json

Subcommands

Command	Description
gron	Convert JSON to greppable line format
diff	Compute RFC 6902 diff between two JSON files
patch	Apply JSON Patch to a file
merge	Merge multiple JSON files (RFC 7396)
query	Query JSON with path expressions
format	Pretty-print or compact JSON
validate	Check JSON validity
schema	Infer JSON schema from data
stream	Process JSONL streams
bench	Run basic benchmarks

Library Usage

This crate is primarily a CLI tool. For programmatic access to fionn functionality, use the constituent library crates directly:

• fionn - Umbrella crate with all functionality
• fionn-gron - Greppable JSON transformation
• fionn-diff - JSON diff, patch, merge
• fionn-tape - Tape-based JSON representation
• fionn-simd - SIMD acceleration primitives
• fionn-core - Core types and traits

Re-exports

pub use fionn_gron as gron;

pub use fionn_diff as diff;

pub use fionn_core as core;