Can I write to a File object from a C extension?

ruby-talk
1

I have a function written in C that wants to write to a FILE *
returned from fopen. I’d like to use this function to write to a File
object that has been opened for output by File.open().

Is this possible? If so, how?

2

Poke around in rubyio.h and you’ll find some macros and functions pertinent to
this.

VALUE rubyFilePtr;
OpenFile *openFilePtr;
FILE *cFilePtr;

rubyFile = rb_file_open( ‘filename’, ‘rw’ );
GetOpenFile(rubyFilePtr, openFilePtr);
rb_io_check_writable(openFilePtr);
cFilePtr = GetWriteFile(openFilePtr);

_why

···

On Thursday 17 July 2003 12:39 pm, Tim Hunter wrote:

I have a function written in C that wants to write to a FILE *
returned from fopen. I’d like to use this function to write to a File
object that has been opened for output by File.open().

Is this possible? If so, how?