Hello,

What are the methods of unformatted binary IO in d? File.write seems to use formatted ASCII . I would like to write a binary file that I cna read in fortan. Similarly, I would like to write a file in Fortan, unformatted IO, and read it using D.

On Thu, 17 Jul 2014 20:35:24 +0000, seany wrote:

> Hello,
> 
> What are the methods of unformatted binary IO in d? File.write seems to use formatted ASCII . I would like to write a binary file that I cna read in fortan. Similarly, I would like to write a file in Fortan, unformatted IO, and read it using D.

You have a few options:
 * The old std.stream -- this module is due for replacement, hopefully
ASAP.
 * Use File.rawRead/rawWrite.  These are intended for arrays, though they
can be used to read single values.
 * Work with chunks of ubyte data and use std.bitmanip's read and write
functions.

The last option is probably your best option for producing good future- proof, idiomatic D code.

On Thu, Jul 17, 2014 at 08:35:24PM +0000, seany via Digitalmars-d-learn wrote:
> Hello,
> 
> What are the methods of unformatted binary IO in d? File.write seems to use formatted ASCII . I would like to write a binary file that I cna read in fortan. Similarly, I would like to write a file in Fortan, unformatted IO, and read it using D.

Use File.rawWrite:

	auto f = File("myfile", "w");
	Data[] data = ... /* put data here */;
	f.rawWrite(data);

Similarly, to read binary data, use File.rawRead:

	auto f = File("myfile", "r");
	Data[] buf; /* buffer to store the data */
	buf.length = /* number of data items to read */;
	auto data = f.rawRead(buf);
	/* data will be a slice of buf, with .length containing the
	 * actual number of items read */

You can use ubyte[] if you have byte-based data to read/write, but rawRead / rawWrite are flexible enough to take arrays of any type.


T

-- 
You are only young once, but you can stay immature indefinitely. -- azephrahel

Data is a built in type? what includefile do I need?

On Thu, 17 Jul 2014 21:01:35 +0000, seany wrote:

> Data is a built in type? what includefile do I need?

No, just used as an example.  What sort of data are reading from the binary file?

On Thu, Jul 17, 2014 at 09:01:35PM +0000, seany via Digitalmars-d-learn wrote:
> Data is a built in type? what includefile do I need?

It can be any type you want, it was just an example.


T

-- 
Chance favours the prepared mind. -- Louis Pasteur

Maybe this can be usefull for u

https://gist.github.com/bencz/3576dfc8a217a34c05a9

On Thursday, 17 July 2014 at 23:04:06 UTC, H. S. Teoh via Digitalmars-d-learn wrote:
> On Thu, Jul 17, 2014 at 09:01:35PM +0000, seany via Digitalmars-d-learn wrote:
>> Data is a built in type? what includefile do I need?
>
> It can be any type you want, it was just an example.
>
>
> T