Grabing C(++) stdout
Short question: how can I grab the stdout written to by C(++), i.e. C code: fwrite(...); std.cstream will be replaced sooner or later.
Re: Grabing C(++) stdout
On Wednesday, 23 July 2014 at 14:53:35 UTC, Chris wrote: Short question: how can I grab the stdout written to by C(++), i.e. C code: fwrite(...); std.cstream will be replaced sooner or later. I don't think I understand the question. stdout is the same file handle, doesn't matter whether that's using c++'s cout, c's stdout in stdio.h or D's std.stdio.stdout writeln(hello world); is just short for stdout.writeln(hello world); also, if you want c io functions, import core.stdc.stdio; If you're wanting to grab the output from another process, take a look at std.process
Re: Grabing C(++) stdout
On Wednesday, 23 July 2014 at 15:12:13 UTC, John Colvin wrote: On Wednesday, 23 July 2014 at 14:53:35 UTC, Chris wrote: Short question: how can I grab the stdout written to by C(++), i.e. C code: fwrite(...); std.cstream will be replaced sooner or later. I don't think I understand the question. stdout is the same file handle, doesn't matter whether that's using c++'s cout, c's stdout in stdio.h or D's std.stdio.stdout writeln(hello world); is just short for stdout.writeln(hello world); also, if you want c io functions, import core.stdc.stdio; If you're wanting to grab the output from another process, take a look at std.process It's a small library written in C++. I can either load it dynamically or incorporate it into my program. Either way, when the C++ part does its job, I can see the correct output in the console window, but I cannot grab it. After analyzing the C++ code, it seems that it uses fwrite and writes to stdout. When I grab stdout I only get the output from the D part, not from the C++ part.
Re: Grabing C(++) stdout
The C++ code does this: size_t fwrite ( const void * ptr, size_t size, size_t count, FILE * stream ); // stream is stdout and text appears in the console (a string). I don't how to grab the text that is written to console. I might have to redirect it from within the C++ code.
Re: Grabing C(++) stdout
On Wednesday, 23 July 2014 at 15:35:59 UTC, Chris wrote: The C++ code does this: size_t fwrite ( const void * ptr, size_t size, size_t count, FILE * stream ); // stream is stdout and text appears in the console (a string). I don't how to grab the text that is written to console. I might have to redirect it from within the C++ code. If it can be done offline, I think you can redirect the console output to a file.
Re: Grabing C(++) stdout
On Wednesday, 23 July 2014 at 15:35:59 UTC, Chris wrote: The C++ code does this: size_t fwrite ( const void * ptr, size_t size, size_t count, FILE * stream ); // stream is stdout and text appears in the console (a string). I don't how to grab the text that is written to console. I might have to redirect it from within the C++ code. I've created simple example (for Linux) - https://bitbucket.org/FreeSlave/redirect-example/src It works as expected. Nothing writes to console, but to file.
Re: Grabing C(++) stdout
On Wednesday, 23 July 2014 at 15:30:53 UTC, Chris wrote: Redirect it from stdout to somewhere else. It might be writing to stderr instead of stdout... does anything change if you reopen stderr too?
