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# Copyright 2018 Google Inc
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
require_relative 'util'
# A directory in an HRX archive.
class HRX::Directory
# The comment that appeared before this directory, or `nil` if it had no
# preceding comment.
#
# HRX file contents are always encoded as UTF-8.
#
# This string is frozen.
attr_reader :comment
# The path to this file, relative to the archive's root, including the
# trailing `/`.
#
# HRX paths are always `/`-separated and always encoded as UTF-8.
#
# This string is frozen.
attr_reader :path
# Creates a new file with the given paths and comment.
#
# Throws an HRX::ParseError if `path` is invalid, or an EncodingError if
# either argument can't be converted to UTF-8.
#
# The `path` may or may not end with a `/`. If it doesn't a `/` will be added.
def initialize(path, comment: nil)
@comment = comment&.clone&.encode("UTF-8")&.freeze
@path = HRX::Util.scan_path(StringScanner.new(path.encode("UTF-8")))
@path << "/" unless @path.end_with?("/")
@path.freeze
end
# Like ::new, but doesn't verify that the arguments are valid.
def self._new_without_checks(path, comment) # :nodoc:
allocate.tap do |dir|
dir._initialize_without_checks(path, comment)
end
end
# Like #initialize, but doesn't verify that the arguments are valid.
def _initialize_without_checks(path, comment) # :nodoc:
@comment = comment.freeze
@path = path.freeze
end
# Returns a copy of this entry with the path modified to be relative to
# `root`.
#
# If `root` is `nil`, returns this as-is.
def _relative(root) # :nodoc:
return self unless root
HRX::Directory._new_without_checks(HRX::Util.relative(root, path), comment)
end
# Returns a copy of this entry with `root` added tothe beginning of the path.
#
# If `root` is `nil`, returns this as-is.
def _absolute(root) # :nodoc:
return self unless root
HRX::Directory._new_without_checks(root + path, comment)
end
end
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