diff options
Diffstat (limited to 'vendor/bundle/ruby/3.4.0/gems/ffi-1.17.4-arm64-darwin/lib/ffi/io.rb')
| -rw-r--r-- | vendor/bundle/ruby/3.4.0/gems/ffi-1.17.4-arm64-darwin/lib/ffi/io.rb | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/vendor/bundle/ruby/3.4.0/gems/ffi-1.17.4-arm64-darwin/lib/ffi/io.rb b/vendor/bundle/ruby/3.4.0/gems/ffi-1.17.4-arm64-darwin/lib/ffi/io.rb new file mode 100644 index 0000000..7fb2857 --- /dev/null +++ b/vendor/bundle/ruby/3.4.0/gems/ffi-1.17.4-arm64-darwin/lib/ffi/io.rb @@ -0,0 +1,62 @@ +# +# 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 + |