Re: Reading unicode string with readf ("%s")

[Ivan Kazmenko via Digitalmars-d-learn]

On Monday, 3 November 2014 at 20:03:03 UTC, Ali Çehreli wrote:
On 11/03/2014 11:47 AM, Ivan Kazmenko wrote:
On Monday, 3 November 2014 at 19:37:20 UTC, Ivan Kazmenko 
wrote:
   readf ("%s", &s);

Worth noting: this reads to end-of-file (not end-of-line or 
whitespace),
and reading the whole file into a string was what I indeed 
expected it
to do.

So, if there is an idiomatic way to read the whole file into a 
string
which is Unicode-compatible, it would be great to learn that, 
too.

I don't know the answer to the Unicode issue with readf but you 
can read the file by chunks:

import std.stdio;
import std.array;
import std.exception;

string readAll(File file)
{
    char[666] buffer;
    char[] contents;
    char[] piece;

    do {
        piece = file.rawRead(buffer);
        contents ~= piece;

    } while (!piece.empty);

    return assumeUnique(contents);
}

void main () {
    string s = stdin.readAll();

    write (s);
}

Ali

Thank you for suggesting an alternative!
Looks like it would be an efficient one, too.
I believe it can be made a bit more efficient if using an 
appender, right?

Still, that's a lot of code for a minute scripting task, albeit 
one has to write the readAll function only once.