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digitalmars.D.learn - Writing to two files at once

reply "wobbles" <grogan.colin gmail.com> writes:
I would like to write to two files at once.

If user specifies verbose flag, output should write to both 
stdout and the programs standard output file.

Any ideas?
May 21 2015
parent reply "wobbles" <grogan.colin gmail.com> writes:
On Thursday, 21 May 2015 at 20:06:08 UTC, wobbles wrote:

 I would like to write to two files at once.

 If user specifies verbose flag, output should write to both 
 stdout and the programs standard output file.

 Any ideas?


I should add, I'm using a library that already writes it's output 
to a std.stdout.File that I can provide it, so my thinking is I 
need a std.stdout.File that points at both stdout and some 
arbitrary file location.

Tricky I think...
May 21 2015
next sibling parent reply "wobbles" <grogan.colin gmail.com> writes:
On Thursday, 21 May 2015 at 20:15:29 UTC, wobbles wrote:

 On Thursday, 21 May 2015 at 20:06:08 UTC, wobbles wrote:

 I would like to write to two files at once.

 If user specifies verbose flag, output should write to both 
 stdout and the programs standard output file.

 Any ideas?


 I should add, I'm using a library that already writes it's 
 output to a std.stdout.File that I can provide it, so my 
 thinking is I need a std.stdout.File that points at both stdout 
 and some arbitrary file location.

 Tricky I think...


What I ended up doing was creating an OutputRange that contains 
the files I want to write to.
On OutputRange.put I simply print to print to all the files.

Means I had to edit the underlying library, but that's OK as I 
own it, and this seems more robust anyway :)
May 21 2015
parent reply =?UTF-8?B?QWxpIMOHZWhyZWxp?= <acehreli yahoo.com> writes:
On 05/21/2015 01:56 PM, wobbles wrote:


 What I ended up doing was creating an OutputRange that contains the
 files I want to write to.
 On OutputRange.put I simply print to print to all the files.


Just like MultiFile example here: :)

   http://ddili.org/ders/d.en/ranges.html#ix_ranges.OutputRange

Ali
May 21 2015
parent "wobbles" <grogan.colin gmail.com> writes:
On Thursday, 21 May 2015 at 21:02:42 UTC, Ali Çehreli wrote:

 On 05/21/2015 01:56 PM, wobbles wrote:


 What I ended up doing was creating an OutputRange that 
 contains the
 files I want to write to.
 On OutputRange.put I simply print to print to all the files.


 Just like MultiFile example here: :)

   http://ddili.org/ders/d.en/ranges.html#ix_ranges.OutputRange

 Ali


Yeah!
This is my implementation:
public struct OutputSink{
	File[] files;
	 property void addFile(File f){ files ~= f; }
	 property File[] file(){ return files; }

	void put(Args...)(string fmt, Args args){
		foreach(file; files)
			file.writefln(fmt, args);
	}
}

I'll remember to look in your book next time I need something 
simple :)
May 21 2015
prev sibling next sibling parent "John Colvin" <john.loughran.colvin gmail.com> writes:
On Thursday, 21 May 2015 at 20:15:29 UTC, wobbles wrote:

 On Thursday, 21 May 2015 at 20:06:08 UTC, wobbles wrote:

 I would like to write to two files at once.

 If user specifies verbose flag, output should write to both 
 stdout and the programs standard output file.

 Any ideas?


 I should add, I'm using a library that already writes it's 
 output to a std.stdout.File that I can provide it, so my 
 thinking is I need a std.stdout.File that points at both stdout 
 and some arbitrary file location.

 Tricky I think...


If it is hardcoded to take a File (I.e. it's not a template 
parameter), then your options are: modify the library, modify 
phobos or use the OS to do the duplication. On *nix you should be 
able to do it quite easily, don't know about windows.
May 21 2015
prev sibling parent reply "Cassio Butrico" <cassio_butrico ig.com.br> writes:
If I understand right you want to redirect the output to a file 
by a flag , another file type , video printer is it?
May 21 2015
parent reply "wobbles" <grogan.colin gmail.com> writes:
On Thursday, 21 May 2015 at 21:00:15 UTC, Cassio Butrico wrote:

 If I understand right you want to redirect the output to a file 
 by a flag , another file type , video printer is it?


I think by video printer you mean the console?
If so, yes.

I believe I've solved it anyway, see Ali and my answer above.
Thanks!
May 21 2015
parent "Cassio Butrico" <cassio_butrico ig.com.br> writes:
On Thursday, 21 May 2015 at 21:16:59 UTC, wobbles wrote:

 On Thursday, 21 May 2015 at 21:00:15 UTC, Cassio Butrico wrote:

 If I understand right you want to redirect the output to a 
 file by a flag , another file type , video printer is it?


 I think by video printer you mean the console?
 If so, yes.

 I believe I've solved it anyway, see Ali and my answer above.
 Thanks!


You're right, Ali 's book is of great help for all
May 21 2015