Nibble

A tool for glamorous shell scripts. Quick, inline TUI components built with Ratatui—no full-screen takeover, just small bites of interaction.

This tool was inspired by gum

Changelog

To view the changelog go to CHANGELOG.md for more details

Installation

cargo install nibble-rs

Usage

Widgets

Currently nibble supports the following widgets

Block

nibble block --title "Block Widget" --border rounded --border-color cyan --height 7

Gives you this output

Gauge

nibble gauge -v 75 --title "Progress" --border double --fg green --modifier bold --time 120

Gives you this output

Table

Display tabular data inline with customizable styling and multiple data formats.

This below command

nibble table --data "Name,Age,City;Alice,30,NYC;Bob,25,LA;Carol,28,SF" -t "Users" --highlight-header

Will output this

Inline Data:

nibble table --data "Name,Age,City;Alice,30,NYC;Bob,25,LA;Carol,28,SF" --title "Users" --highlight-header

From CSV File:

nibble table --file data.csv --title "CSV Data" --height 12 --border rounded --fg cyan

From JSON File:

nibble table --file users.json --title "Users" --highlight-header --border double

With Custom Column Widths:

nibble table -d "Product,Price,Stock;Laptop,999,50;Mouse,25,200" -w "50,25,25" -t "Inventory"

Supported Formats:

• Inline data: Use semicolons (;) for rows and commas (,) for columns
• CSV files: Standard comma-separated values
• JSON files: Array of objects [{"name": "Alice", ...}] or array of arrays [["Name", "Age"], ["Alice", 30]]

Key Options:

• --data, -d: Inline data string
• --file, -f: Path to CSV or JSON file
• --headers: Custom column headers (comma-separated)
• --widths, -w: Column widths as percentages (comma-separated, must sum to ≤100)
• --highlight-header: Bold the header row
• --height: Table height in lines (default: 10)
• --title, -t: Title for the table block

Example JSON (array of objects):

[
  {"name": "Alice", "age": 30, "city": "NYC"},
  {"name": "Bob", "age": 25, "city": "LA"}
]

Example JSON (array of arrays):

[
  ["Name", "Age", "City"],
  ["Alice", 30, "NYC"],
  ["Bob", 25, "LA"]
]

Input

Single-line text input field with support for prompts, placeholders, passwords, and character limits.

Basic Input:

nibble input --prompt "Name:" --placeholder "Enter your name"

Password Input:

nibble input --prompt "Password:" --password --border double

With Character Limit and Counter:

nibble input --prompt "Username:" --max-length 20 --show-count --border rounded --fg cyan

Pre-filled Value:

nibble input --prompt "Email:" --value "user@example.com" --show-count

Styled Input:

nibble input --title "User Input" --prompt "City:" --placeholder "New York" --border thick --fg green

Key Options:

• --prompt, -r: Label text displayed before the input field
• --placeholder, -p: Placeholder text shown when input is empty
• --value, -v: Initial/pre-filled value
• --title, -t: Title for the input block
• --password: Masks input with asterisks (does not print output)
• --max-length, -m: Character limit
• --show-count, -c: Display character counter
• --height: Widget height in lines (default: 3)

Confirm

Interactive confirmation prompt with Yes/No buttons. Returns exit code 0 for Yes and 1 for No.

Basic Confirm

# Default confirm
nibble confirm 

Custom Text with Custom options

# Custom Text
nibble confirm --text "Continue ?"

# Custom options
nibble confirm --text "Continue ?" --affirmative "Proceed" --negative "Cancel"

Select No by default

nibble confirm --text "Continue ?" --affirmative "Proceed" --negative "Cancel" --default-no