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module Gitlab
module Git
class Index
DEFAULT_MODE = 0o100644
attr_reader :repository, :raw_index
def initialize(repository)
@repository = repository
@raw_index = repository.rugged.index
end
delegate :read_tree, :get, to: :raw_index
def write_tree
raw_index.write_tree(repository.rugged)
end
def dir_exists?(path)
raw_index.find { |entry| entry[:path].start_with?("#{path}/") }
end
def create(options)
options = normalize_options(options)
file_entry = get(options[:file_path])
if file_entry
raise Gitlab::Git::Repository::InvalidBlobName.new("Filename already exists")
end
add_blob(options)
end
def create_dir(options)
options = normalize_options(options)
file_entry = get(options[:file_path])
if file_entry
raise Gitlab::Git::Repository::InvalidBlobName.new("Directory already exists as a file")
end
if dir_exists?(options[:file_path])
raise Gitlab::Git::Repository::InvalidBlobName.new("Directory already exists")
end
options = options.dup
options[:file_path] += '/.gitkeep'
options[:content] = ''
add_blob(options)
end
def update(options)
options = normalize_options(options)
file_entry = get(options[:file_path])
unless file_entry
raise Gitlab::Git::Repository::InvalidBlobName.new("File doesn't exist")
end
add_blob(options, mode: file_entry[:mode])
end
def move(options)
options = normalize_options(options)
file_entry = get(options[:previous_path])
unless file_entry
raise Gitlab::Git::Repository::InvalidBlobName.new("File doesn't exist")
end
raw_index.remove(options[:previous_path])
add_blob(options, mode: file_entry[:mode])
end
def delete(options)
options = normalize_options(options)
file_entry = get(options[:file_path])
unless file_entry
raise Gitlab::Git::Repository::InvalidBlobName.new("File doesn't exist")
end
raw_index.remove(options[:file_path])
end
private
def normalize_options(options)
options = options.dup
options[:file_path] = normalize_path(options[:file_path]) if options[:file_path]
options[:previous_path] = normalize_path(options[:previous_path]) if options[:previous_path]
options
end
def normalize_path(path)
pathname = Gitlab::Git::PathHelper.normalize_path(path.dup)
if pathname.each_filename.include?('..')
raise Gitlab::Git::Repository::InvalidBlobName.new('Invalid path')
end
pathname.to_s
end
def add_blob(options, mode: nil)
content = options[:content]
return unless content
content = Base64.decode64(content) if options[:encoding] == 'base64'
detect = CharlockHolmes::EncodingDetector.new.detect(content)
unless detect && detect[:type] == :binary
# When writing to the repo directly as we are doing here,
# the `core.autocrlf` config isn't taken into account.
content.gsub!("\r\n", "\n") if repository.autocrlf
end
oid = repository.rugged.write(content, :blob)
raw_index.add(path: options[:file_path], oid: oid, mode: mode || DEFAULT_MODE)
rescue Rugged::IndexError => e
raise Gitlab::Git::Repository::InvalidBlobName.new(e.message)
end
end
end
end
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