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|
# frozen_string_literal: true
module DiffViewer
class Base
PARTIAL_PATH_PREFIX = 'projects/diffs/viewers'
class_attribute :partial_name, :type, :extensions, :file_types, :binary, :switcher_icon, :switcher_title
# These limits relate to the sum of the old and new blob sizes.
# Limits related to the actual size of the diff are enforced in Gitlab::Diff::File.
class_attribute :collapse_limit, :size_limit
delegate :partial_path, :loading_partial_path, :rich?, :simple?, :text?, :binary?, to: :class
attr_reader :diff_file
delegate :project, to: :diff_file
def initialize(diff_file)
@diff_file = diff_file
@initially_binary = diff_file.binary_in_repo?
end
def self.partial_path
File.join(PARTIAL_PATH_PREFIX, partial_name)
end
def self.rich?
type == :rich
end
def self.simple?
type == :simple
end
def self.binary?
binary
end
def self.text?
!binary?
end
def self.can_render?(diff_file, verify_binary: true)
can_render_blob?(diff_file.old_blob, verify_binary: verify_binary) &&
can_render_blob?(diff_file.new_blob, verify_binary: verify_binary)
end
def self.can_render_blob?(blob, verify_binary: true)
return true if blob.nil?
return false if verify_binary && binary? != blob.binary_in_repo?
return true if extensions&.include?(blob.extension)
return true if file_types&.include?(blob.file_type)
false
end
def collapsed?
return @collapsed if defined?(@collapsed)
return @collapsed = true if diff_file.collapsed?
@collapsed = !diff_file.expanded? && collapse_limit && diff_file.raw_size > collapse_limit
end
def too_large?
return @too_large if defined?(@too_large)
return @too_large = true if diff_file.too_large?
@too_large = size_limit && diff_file.raw_size > size_limit
end
def binary_detected_after_load?
!@initially_binary && diff_file.binary_in_repo?
end
# This method is used on the server side to check whether we can attempt to
# render the diff_file at all. The human-readable error message can be
# retrieved by #render_error_message.
def render_error
if too_large?
:too_large
end
end
def render_error_message
return unless render_error
_("This %{viewer} could not be displayed because %{reason}. You can %{options} instead.") %
{
viewer: switcher_title,
reason: render_error_reason,
options: render_error_options.to_sentence(two_words_connector: _(' or '), last_word_connector: _(', or '))
}
end
def prepare!
# To be overridden by subclasses
end
private
def render_error_options
options = []
blob_url = Gitlab::Routing.url_helpers.project_blob_path(diff_file.repository.project,
File.join(diff_file.content_sha, diff_file.file_path))
options << ActionController::Base.helpers.link_to(_('view the blob'), blob_url)
options
end
def render_error_reason
if render_error == :too_large
_("it is too large")
end
end
end
end
|
