Add bin and edit workflow

bin/gems/ffi-1.17.1-x86_64-linux-gnu/lib/ffi/io.rb

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+#
+# Copyright (C) 2008, 2009 Wayne Meissner
+#
+# This file is part of ruby-ffi.
+#
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#
+# * Redistributions of source code must retain the above copyright notice, this
+#   list of conditions and the following disclaimer.
+# * Redistributions in binary form must reproduce the above copyright notice
+#   this list of conditions and the following disclaimer in the documentation
+#   and/or other materials provided with the distribution.
+# * Neither the name of the Ruby FFI project nor the names of its contributors
+#   may be used to endorse or promote products derived from this software
+#   without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.#
+
+module FFI
+
+  # This module implements a couple of class methods to play with IO.
+  module IO
+    # @param [Integer] fd file decriptor
+    # @param [String] mode mode string
+    # @return [::IO]
+    # Synonym for IO::for_fd.
+    def self.for_fd(fd, mode = "r")
+      ::IO.for_fd(fd, mode)
+    end
+
+    # @param [#read] io io to read from
+    # @param [AbstractMemory] buf destination for data read from +io+
+    # @param [nil, Integer] len maximul number of bytes to read from +io+. If +nil+,
+    #  read until end of file.
+    # @return [Integer] length really read, in bytes
+    #
+    # A version of IO#read that reads data from an IO and put then into a native buffer.
+    #
+    # This will be optimized at some future time to eliminate the double copy.
+    #
+    def self.native_read(io, buf, len)
+      tmp = io.read(len)
+      return -1 unless tmp
+      buf.put_bytes(0, tmp)
+      tmp.length
+    end
+
+  end
+end
+