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altsv

An ALTernative LTSV Parser / Dumper gem partially written in Rust.

Prerequisites

  • rustc (tested with 1.32.0)
  • cargo (The de-fact standard package manager for Rust)

You can install both with rustup.rs

Installation

Add this line to your application's Gemfile:

gem 'altsv'

And then execute:

$ bundle

Or install it yourself as:

$ gem install altsv

Usage

At first, you should require altsv:

require 'altsv'

In addition, if you manage gems with bundler, you should add the statement below into your Gemfile:

gem 'altsv'

parsing LTSV

# parse string
string = "label1:value1\tlabel2:value2"
values = Altsv.parse(string) # => [{:label1 => "value1", :label2 => "value2"}]

# parse via stream
# content: as below
# label1_1:value1_1\tlabel1_2:value1_2
# label2_1:value2_1\tlabel2_2:value2_2
stream = File.open("some_file.ltsv", "r")
values = Altsv.parse(stream)
# => [{:label1_1 => "value1_2", :label1_2 => "value1_2"},
#     {:label2_1 => "value2_2", :label2_2 => "value2_2"}]

loading LTSV file

# load via path
values = Altsv.load("some_path.ltsv")

# load via stream
stream = File.open("some_file.ltsv", "r")
values = Altsv.load(stream) # => same as LTSV.parse(stream)

dumping into LTSV

value = {label1: "value1", label2: "value2"}
dumped = Altsv.dump(value) # => "label1:value1\tlabel2:value2"

Dumped objects should respond to :to_hash.

Development

After checking out the repo, run bin/setup to install dependencies. Then, run rake test 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 tags, and push the .gem file to rubygems.org.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/condor/altsv.

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Alternative LTSV handling gem partially written in Rust.

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