[Boost-bugs] [Boost C++ Libraries] #9297: "boost::iostreams::file_descriptor_sink" doesn't support translation of line endings on Windows

Subject: [Boost-bugs] [Boost C++ Libraries] #9297: "boost::iostreams::file_descriptor_sink" doesn't support translation of line endings on Windows
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2013-10-24 09:33:20

#9297: "boost::iostreams::file_descriptor_sink" doesn't support translation of
line endings on Windows
----------------------------------+-----------------------
 Reporter:  m.kosch@…             |      Owner:  turkanis
     Type:  Bugs                  |     Status:  new
Milestone:  To Be Determined      |  Component:  iostreams
  Version:  Boost 1.54.0          |   Severity:  Problem
 Keywords:  file_descriptor_sink  |
----------------------------------+-----------------------
 When a Windows file descriptor is opened in text mode, all newline
 characters written to this file are translated to CRLF. However, if
 ''boost::iostreams::file_descriptor_sink'' is used on such a file
 descriptor to write newlines to a stream, these newline characters are not
 translated to CRLF.

 The following sample program demonstrates this:
 {{{#!c++
 #include <boost/iostreams/device/file_descriptor.hpp>
 #include <boost/iostreams/stream.hpp>
 #include <fcntl.h>
 #include <io.h>
 #include <string>
 #include <sys/stat.h>


 int main()
 {
     static const std::string str1 = "This is a line";
     static const std::string str2 = "This is another line";

     int fd = _open("output.txt", _O_WRONLY | _O_CREAT | _O_TRUNC |
 _O_TEXT,
             _S_IREAD | _S_IWRITE);
     _write(fd, str1.data(), str1.size());
     _write(fd, "\n", 1);    // This writes "\r\n"

     boost::iostreams::file_descriptor_sink sink(fd,
 boost::iostreams::close_handle);
     boost::iostreams::stream<boost::iostreams::file_descriptor_sink>
 stream(sink);
     stream << str2;
     stream << std::endl;    // This only writes "\n"

     return 0;
 }
 }}}

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/9297>
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