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# frozen_string_literal: true
# Git-based project
#
# Analyze a given (bare) Git repository for license information
#
# Project files for this project type will contain the following keys:
# :name - the file's path relative to the repo root
# :oid - the file's OID
autoload :Rugged, 'rugged'
module Licensee
module Projects
class GitProject < Licensee::Projects::Project
attr_reader :revision
class InvalidRepository < ArgumentError; end
def initialize(repo, revision: nil, **args)
@raw_repo = repo
@revision = revision
raise InvalidRepository if repository.head_unborn?
super(**args)
end
def repository
@repository ||= if @raw_repo.is_a? Rugged::Repository
@raw_repo
else
Rugged::Repository.new(@raw_repo)
end
rescue Rugged::OSError, Rugged::RepositoryError
raise InvalidRepository
end
def close
repository.close
end
private
def commit
@commit ||= if revision
repository.lookup(revision)
else
repository.last_commit
end
end
MAX_LICENSE_SIZE = 64 * 1024
# Retrieve a file's content from the Git database
#
# file - the file hash, including the file's OID
#
# Returns a string representing the file's contents
def load_file(file)
data, = Rugged::Blob.to_buffer(repository, file[:oid], MAX_LICENSE_SIZE)
data
end
# Returns an array of hashes representing the project's files.
# Hashes will have the the following keys:
# :name - the file's path relative to the repo root
# :oid - the file's OID
def files
@files ||= files_from_tree(commit.tree)
end
def files_from_tree(tree, dir = '.')
tree.select { |e| e[:type] == :blob }.map do |entry|
entry.merge(dir: dir)
end.compact
end
end
end
end
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