CSV Pipeline

CSV processing library inspired by csvsc

Example

use csv_pipeline::{Pipeline, Transformer};

let source = "\
  Person,Score\n\
  A,1\n\
  A,8\n\
  B,3\n\
  B,4\n";
let reader = csv::Reader::from_reader(source.as_bytes());
let csv = Pipeline::from_reader(reader)
  .unwrap()
  .map(|_headers, row| Ok(row))
  // Transform into a new csv
  .transform_into(|| {
    vec![
      // Keep every Person
      Transformer::new("Person").keep_unique(),
      // Sum the scores into a "Total score" column
      Transformer::new("Total score").from_col("Score").sum(0),
    ]
  })
  .collect_into_string()
  .unwrap();

assert_eq!(
  csv,
  "Person,Total score\n\
    A,9\n\
    B,7\n"
);

Dev Instructions

Get started

Install Rust.

Run tests:

cargo test

Releasing a new version

1. Update CHANGELOG.md
2. Bump the version number in Cargo.toml
3. Run cargo test
4. Run cargo publish
5. Create a git tag in format v#.#.#
6. Create GitHub release with release notes