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# frozen_string_literal: true
module Gitlab
module Git
# This class behaves like a struct with fields :blob_id, :blob_size, :operation, :old_path, :new_path
# All those fields are (binary) strings or integers
class RawDiffChange
attr_reader :blob_id, :blob_size, :old_path, :new_path, :operation
def initialize(raw_change)
if raw_change.is_a?(Gitaly::GetRawChangesResponse::RawChange)
@blob_id = raw_change.blob_id
@blob_size = raw_change.size
@old_path = raw_change.old_path_bytes.presence
@new_path = raw_change.new_path_bytes.presence
@operation = raw_change.operation&.downcase || :unknown
else
parse(raw_change)
end
end
private
# Input data has the following format:
#
# When a file has been modified:
# 7e3e39ebb9b2bf433b4ad17313770fbe4051649c 669 M\tfiles/ruby/popen.rb
#
# When a file has been renamed:
# 85bc2f9753afd5f4fc5d7c75f74f8d526f26b4f3 107 R060\tfiles/js/commit.js.coffee\tfiles/js/commit.coffee
def parse(raw_change)
@blob_id, @blob_size, @raw_operation, raw_paths = raw_change.split(' ', 4)
@blob_size = @blob_size.to_i
@operation = extract_operation
@old_path, @new_path = extract_paths(raw_paths)
end
def extract_paths(file_path)
case operation
when :copied, :renamed
file_path.split(/\t/)
when :deleted
[file_path, nil]
when :added
[nil, file_path]
else
[file_path, file_path]
end
end
def extract_operation
return :unknown unless @raw_operation
case @raw_operation[0]
when 'A'
:added
when 'C'
:copied
when 'D'
:deleted
when 'M'
:modified
when 'R'
:renamed
when 'T'
:type_changed
else
:unknown
end
end
end
end
end
|
