97 lines
2.7 KiB
Ruby
97 lines
2.7 KiB
Ruby
# Copyright 2020 Google LLC
|
|
#
|
|
# 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.
|
|
# Copyright 2015 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 'google/apis/core/http_command'
|
|
require 'google/apis/core/upload'
|
|
require 'google/apis/core/download'
|
|
require 'addressable/uri'
|
|
require 'securerandom'
|
|
module Google
|
|
module Apis
|
|
module Core
|
|
class CompositeIO
|
|
def initialize(*ios)
|
|
@ios = ios.flatten
|
|
@pos = 0
|
|
@index = 0
|
|
@sizes = @ios.map(&:size)
|
|
end
|
|
|
|
def read(length = nil, buf = nil)
|
|
buf = buf ? buf.replace('') : ''
|
|
|
|
begin
|
|
io = @ios[@index]
|
|
break if io.nil?
|
|
result = io.read(length)
|
|
if result
|
|
buf << result
|
|
if length
|
|
length -= result.length
|
|
break if length == 0
|
|
end
|
|
end
|
|
@index += 1
|
|
end while @index < @ios.length
|
|
buf.length > 0 ? buf : nil
|
|
end
|
|
|
|
def size
|
|
@sizes.reduce(:+)
|
|
end
|
|
|
|
alias_method :length, :size
|
|
|
|
def pos
|
|
@pos
|
|
end
|
|
|
|
def pos=(pos)
|
|
fail ArgumentError, "Position can not be negative" if pos < 0
|
|
@pos = pos
|
|
new_index = nil
|
|
@ios.each_with_index do |io,idx|
|
|
size = io.size
|
|
if pos <= size
|
|
new_index ||= idx
|
|
io.pos = pos
|
|
pos = 0
|
|
else
|
|
io.pos = size
|
|
pos -= size
|
|
end
|
|
end
|
|
@index = new_index unless new_index.nil?
|
|
end
|
|
|
|
def rewind
|
|
self.pos = 0
|
|
end
|
|
end
|
|
end
|
|
end
|
|
end |