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Re: how to remove block of data from file based on string

by Xiong (Hermit)
on Mar 14, 2012 at 23:22 UTC ( [id://959689]=note: print w/replies, xml ) Need Help??


in reply to how to remove block of data from file based on string

Sorry; I can't answer your question because I can't understand it. Let me try to show you how I think you might ask.

I have the following input data:

Input:
block1 start hehu7 gjwsdh hsjdhj remove hjhsj 
jdkwj hwjdhjwh end block2 start crgr hjdhwjd 
wjdkwj wkjw g hjhd end

[download]

I want to remove the string that starts with 'start', includes 'remove', and ends with 'end':

Output:
block1  block2 start crgr hjdhwjd 
wjdkwj wkjw g hjhd end

[download]

Of course this may not be what you want at all. Why not try to be a bit more explicit and we'll see what we can do to help?

Death only closes a Man's Reputation, and determines it as good or bad. —Joseph Addison

Replies are listed 'Best First'.
Re^2: how to remove block of data from file based on string
by royalreddy (Initiate) on Mar 14, 2012 at 23:24 UTC
    ya, this is what I want.......
[reply]
      Here is your solution: 
      my $str = <<'EOB';
start
    hehu7 gjwsdh hsjdhj remove hjhsj
    jdkwj hwjdhjwh
end
start
    crgr hjdhwjd
    wjdkwj wkjw g hjhd
end
EOB

while ($str =~ /(\bstart\b.*?\bend\b\s*)/gs) {
    my $block = $1;
    if ($block =~ /\bremove\b/) {
        $str =~ s/\Q$block\E//;
    }
}
print $str;

__END__
start
    crgr hjdhwjd
    wjdkwj wkjw g hjhd
end

      [download]
[reply]
[d/l]
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