Contents of /code/trunk/Detrail

#!/usr/bin/perl

# This is a script for removing trailing whitespace from lines in files that
# are listed on the command line.

# This subroutine does the work for one file.

sub detrail {
my($file) = $_[0];
my($changed) = 0;
open(IN, "$file") || die "Can't open $file for input";
@lines = <IN>;
close(IN);
foreach (@lines)
  {
  if (/\s+\n$/)
    {
    s/\s+\n$/\n/;
    $changed = 1;
    }
  }
if ($changed)
  {
  open(OUT, ">$file") || die "Can't open $file for output";
  print OUT @lines;
  close(OUT);
  }
}

# This is the main program

$, = "";   # Output field separator
for ($i = 0; $i < @ARGV; $i++) { &detrail($ARGV[$i]); }

# End
1	ph10	97	#!/usr/bin/perl
2
3			# This is a script for removing trailing whitespace from lines in files that
4			# are listed on the command line.
5
6			# This subroutine does the work for one file.
7
8			sub detrail {
9	ph10	111	my($file) = $_[0];
10			my($changed) = 0;
11	ph10	97	open(IN, "$file") \|\| die "Can't open $file for input";
12			@lines = <IN>;
13			close(IN);
14	ph10	111	foreach (@lines)
15			{
16			if (/\s+\n$/)
17			{
18			s/\s+\n$/\n/;
19	ph10	97	$changed = 1;
20	ph10	111	}
21	ph10	97	}
22			if ($changed)
23	ph10	111	{
24	ph10	97	open(OUT, ">$file") \|\| die "Can't open $file for output";
25			print OUT @lines;
26			close(OUT);
27	ph10	111	}
28			}
29	ph10	97
30			# This is the main program
31
32			$, = ""; # Output field separator
33			for ($i = 0; $i < @ARGV; $i++) { &detrail($ARGV[$i]); }
34
35			# End