module CompactIndex

Formats the versions information of a gem, to be display in the `/info/gemname` endpoint.

@param versions_file [CompactIndex::VersionsFile] which will be used as a base response @param gems [Array] an optional list of [CompactIndex::Gem] to be appended on the end

of the base file. Example:
```ruby
[
  CompactIndex::GemVersion.new("1.0.1", "ruby", "abc123", "info123", [
    CompactIndex::Dependency.new("foo", "=1.0.1", "abc123"),
    CompactIndex::Dependency.new("bar", ">1.0, <2.0", "abc123"),
  ])
]
```

@return [String] The formated output. Example:

```ruby
--
1.0.1 requirement:<2.0&>1.0|checksum:abc1
1.0.2 requirement:<2.0&>1.0,requirement2:=1.1|checksum:abc2,ruby:>1.0,rubygems:>2.0
```

# File lib/compact_index.rb, line 73
def self.info(versions)
  versions.inject("---\n".dup) do |output, version|
    output << version.to_line << "\n"
  end
end

Formats a list of gem names, to be used on the /names endpoint. @param gem_names [Array] array with gem names to be formated, in alphabetical order @return [String] names on the specified format for new index /names endpoint. Example:

```ruby
---
rack
rails
other-gem
```

# File lib/compact_index.rb, line 21
def self.names(gem_names)
  String.new("---\n") << gem_names.join("\n") << "\n"
end

Returns the versions file content argumented with some extra gems @param versions_file [CompactIndex::VersionsFile] which will be used as a base response @param gems [Array] an optional list of [CompactIndex::Gem] to be appended on the end

of the base file. Example:
```ruby
[
  CompactIndex::Gem.new("gem1", [
    CompactIndex::GemVersion.new("0.9.8", "ruby", "abc123"),
    CompactIndex::GemVersion.new("0.9.9", "jruby", "abc123"),
  ]),
  CompactIndex::Gem.new("gem2", [
    CompactIndex::GemVersion.new("0.9.8", "ruby", "abc123"),
    CompactIndex::GemVersion.new("0.9.9", "jruby", "abc123"),
  ])
]
```

@return [String] The formated output. Example:

```ruby
created_at: 2001-01-01T01:01:01-01:01
---
rack 0.1.0,0.1.1,0.1.2,0.2.0,0.2.1,0.3.0,0.4.0,0.4.1,0.5.0,0.5.1,0.5.2,0.5.3 c54e4b7e14861a5d8c225283b75075f4
rails 0.0.1,0.1.0 00fd5c36764f4ec1e8adf1c9adaada55
sinatra 0.1.1,0.1.2,0.1.3 46f0a24d291725736216b4b6e7412be6
```

# File lib/compact_index.rb, line 49
def self.versions(versions_file, gems = nil, args = {})
  versions_file.contents(gems, args)
end