ElfHam 🧝🍖

ElfHam is an extremely simple utility gem that's useful for transform CSVs.

tldr;

require "elf_ham"

# Load your CSV:
elf_ham = ElfHam.new(ARGF.read)

# Filter rows:
elf_ham.select { |row| row["header2"] != "b" }

# Transform rows:
elf_ham.transform do |row|
  row["header3"] = "elfham"
end

# Print the result
puts elf_ham.result

Instructions

Install the gem:
```
gem install elf_ham
```

Create a transformation script:

echo '#!/usr/bin/env ruby

require "elf_ham"

elf_ham = ElfHam.new(ARGF.read)

elf_ham.select do |row|
  row["header2"] != "b"
end

elf_ham.transform do |row|
  row["header3"] = "elfham"
end

puts elf_ham.result' > transform.rb

Make the script executable:
```
chmod u+x transform.rb
```
Edit the script to your liking.

Run it:

transform.rb path/to/your.csv > transformed.csv

# or

cat path/to/your.csv | transform.rb > transformed.csv

Development

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and the created tag, and push the .gem file to rubygems.org.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/jarednorman/elf_ham. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the code of conduct.

License

The gem is available as open source under the terms of the MIT License.

Code of Conduct

Everyone interacting in the ElfHam project's codebases, issue trackers, chat rooms and mailing lists is expected to follow the code of conduct.