Hi

Is it possible to read lines from a char[] buffer? I ask this because
reading lines directly from a file (with a BufferedStream) seems to be very
slow.
So when I can first load my file

char[] file = cast(char[])std.file.read("filename");

and then read lines from file that would go faster I presume.

But I don't see a way to do this.

Anyone with an idea for this problem?

Thanks in advance.

Jan

Jan Hanselaer wrote:
> Is it possible to read lines from a char[] buffer? I ask this because reading lines directly from a file (with a BufferedStream) seems to be very slow.
> So when I can first load my file
> 
> char[] file = cast(char[])std.file.read("filename");
> 
> and then read lines from file that would go faster I presume.
> 
> But I don't see a way to do this.
> 
> Anyone with an idea for this problem?

Did you try a MemoryStream? (I have no idea about the performance)

On Sun, 6 May 2007 11:31:14 +0200, Jan Hanselaer wrote:

> Hi
> 
> Is it possible to read lines from a char[] buffer? I ask this because
> reading lines directly from a file (with a BufferedStream) seems to be very
> slow.
> So when I can first load my file
> 
> char[] file = cast(char[])std.file.read("filename");
> 
> and then read lines from file that would go faster I presume.
> 
> But I don't see a way to do this.
> 
> Anyone with an idea for this problem?
> 
Here are two routines that I use ...

// -----------------
import std.file;
import std.string;

enum GetOpt
{
    Exists = 'e',   // Must exist otherwise Get fails.
    Always = 'a'    // Get always returns something, even if it's just
                    //   empty lines for a missing file.
}

// Read an entire file into a string.
char[] GetText(char[] pFileName, GetOpt pOpt = GetOpt.Always)
{
    char[] lFileText;
    if (std.file.exists( pFileName))
    {
        lFileText = cast(char[]) std.file.read(pFileName);
        // Ensure last line has a EOL.
        if ( (lFileText.length == 0) ||
             (lFileText[$-1] != '\n'))
             lFileText ~= std.path.linesep;
    }
    else if (pOpt == GetOpt.Exists)
    {
        throw new Exception( std.string.format("File '%s' not found.",
				 pFileName));
    }
    return lFileText;

}

// Read a entire file in to a set of lines (strings).
char[][] GetTextLines(char[] pFileName, GetOpt pOpt = GetOpt.Always)
{
    char[][] lLines;
    char[]   lText;
    lText = GetText(pFileName, pOpt);
    lLines = std.string.splitlines( lText );
    return lLines;
}


-- 
Derek Parnell
Melbourne, Australia
"Justice for David Hicks!"
skype: derek.j.parnell

Jan Hanselaer wrote:

> Hi
> 
> Is it possible to read lines from a char[] buffer? I ask this because
> reading lines directly from a file (with a BufferedStream) seems to be
> very slow.
> So when I can first load my file
> 
> char[] file = cast(char[])std.file.read("filename");
> 
> and then read lines from file that would go faster I presume.
> 
> But I don't see a way to do this.
> 
> Anyone with an idea for this problem?
> 
> Thanks in advance.
> 
> Jan

You can do something like:

import std.file;
import std.stdio;
import std.string;

void main()
{
        char[] file = cast(char[])std.file.read("filename");
        foreach(i,line; std.string.splitlines(file))
        {
                std.stdio.writefln("#",i," = ",line);
        }
}