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# Copyright (C) 2021-2024 Ruby-GNOME Project Team
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
require "fiddle"
require_relative "ruby-seekable"
module Gio
class RubyInputStream < InputStream
type_register("RubyInputStream")
include Seekable
include RubySeekable
def initialize(ruby_input)
@ruby_input = ruby_input
@buffer = +""
super()
end
private
def ruby_io
@ruby_input
end
def virtual_do_read_fn(buffer_address, count, cancellable)
buffer = Fiddle::Pointer.new(buffer_address)
if @ruby_input.read(count, @buffer)
buffer[0, @buffer.bytesize] = @buffer
@buffer.bytesize
else
0
end
end
def virtual_do_skip(count, cancellable)
if @ruby_input.respond_to?(:seek)
if @ruby_input.seek(count, IO::SEEK_CUR).zero?
count
else
-1
end
else
if @ruby_input.read(count, @buffer)
@buffer.bytesize
else
-1
end
end
end
def virtual_do_close_fn(cancellable)
@ruby_input.close
true
end
end
end
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