First of all thank your very much for your assistance.
On Sunday, 25 March 2012 at 15:04:30 UTC, Ali Çehreli wrote:
On 03/25/2012 06:00 AM, Tyro[17] wrote:
> I am trying to figure out the cause of my problem in the
following post:
>
>
http://forum.dlang.org/thread/[email protected]
Sorry that I missed your question there. :(
> and encountered something peculiar about reading strings.
Whenever a
> distinct terminator is indicated in the input format (ex. "
%s@", @
> being the terminator), readf() leaves the terminator on the
input buffer
> after reading the data. If no terminator is specified the
only way to
> indicate end of input is to use ctrl-d (ctrl-z on windows),
however that
> causes the eof indicator to be set to true and the stream is
marked as
> empty for all future attempts to access stdin.
>
> void main(string[] args)
> {
> string s1;
> double d;
> string s2;
>
> writeln("Enter a @ terminated string (multiline ok):");
> readf(" %s@", &s1);
> auto arr = s1.split();
>
> if (!stdin.eof()) {
> writeln("The stream is not empty.");
> } else {
> writeln("The stream is empty.");
> }
> writeln("Enter another string (terminated with
cntrl-d|ctrl-z):");
I am not sure about the cntrl-d|ctrl-z part though. Since it
terminates the input, the program should not be able to read
any more characters.
> readf(" %s", &s2); // No matter how many read attempts
I advise reading string by readln(). You can call chomp() to
get rid of whitespace around it:
while (s2.length == 0) {
s2 = chomp(readln());
}
You can achieve the same with:
readf(" %s\n", &s2);
My goal however, is not to read one line of information. Rather,
it is to
read multiple lines of information from standard input. I get
close to
being able to do so if i don't including "\n" as a part of my
format string
or if I changing your suggestion to
while (!stdin.eol()) {
s2 = chomp(readln());
}
but again I run into the predicament was before, a need to close
the
the stream with Ctrl-D/Ctrl-Z.
Andrew
