chalk

Task-oriented I/O helper for Golang CLI. It wires together flag-driven input/output routing (local filesystem, S3, stdin/stdout) with a live terminal progress UI so you can focus on the processing logic.

Features

• Resolves input from a local directory (-I ./path), an S3 bucket (-I s3://bucket), explicit file arguments, or stdin
• Resolves output to a local directory (-O ./path), an S3 bucket (-O s3://bucket), a single file (-o out.txt), or stdout
• Renders a live progress tree with elapsed timers, spinner, and per-task pass/fail status

Quick Start

package main

import (
  "context"

  "github.com/fogfish/chalk"
)

func process(ctx context.Context, path string, r io.Reader, w io.Writer) error {
  chalk.Task(0, path)

  // Subtask at level 1
  chalk.Task(1, "read")
  // ... read from fs
  chalk.Done()

  chalk.Task(1, "transform")
  // ... do work
  chalk.Done()

  chalk.Done()
  return nil
}

func main() {
  chalk.Start(process)
}

Run it:

mytool -I ./input -O ./output
mytool -I s3://my-bucket -O s3://out-bucket
cat file.txt | mytool

License

See LICENSE.