Re: Getting a string stream

[Pascal Bourguignon]

Aurelien <aurelien@fractals.be> wrote:
> 
> Hi again,
> 
> Sorry, this is more a C question, but it could turn out that objective-c 
> has more adequate an answer to my problem...
> 
> I have an NSString that I'd like to pass to a function as a stream. This 
> is how I'm trying to implement this:
> 
> #include <stdio.h>
> 
> [...]
> FILE *_stream;
> NSString *streamStr =  [[NSString alloc] initWithString: @"..."];
> const char *buffer = [streamStr UTF8String];
> _stream = fmemopen ( buffer, strlen (buffer), "r" );
> [...]
> 
> the compiler complains about an "undefined reference to 'fmemopen'"
> 
> Seems that my glibc version doesn't support fmemopen. Is something like 
> this possible ? fmemopen is such a basic facility...

You can check if you have a function in a library with:

% nm /usr/lib/libc.a | grep fmemopen
fmemopen.o:
00000220 T fmemopen
000001f0 T fmemopen_close
00000000 T fmemopen_read
00000180 T fmemopen_seek
00000090 T fmemopen_write



> How can I know the version of my glibc ? 

If you have  rpm and you've installed glibc with rpm,  you can get its
version with:

% rpm  -q --queryformat='%{VERSION}-%{RELEASE}\n'  glibc 
2.2-9

> Is there another well-known 
> function with the same functionality ?
>
> Finally, are there objc objects to handle streams ?
> 
> Aurélien



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