tags/pcre-7.1/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	#!/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	my($file) = $_[0];
10	my($changed) = 0;
11	open(IN, "$file") \|\| die "Can't open $file for input";
12	@lines = <IN>;
13	close(IN);
14	foreach (@lines)
15	{
16	if (/\s+\n$/)
17	{
18	s/\s+\n$/\n/;
19	$changed = 1;
20	}
21	}
22	if ($changed)
23	{
24	open(OUT, ">$file") \|\| die "Can't open $file for output";
25	print OUT @lines;
26	close(OUT);
27	}
28	}
29
30	# This is the main program
31
32	$, = ""; # Output field separator
33	for ($i = 0; $i < @ARGV; $i++) { &detrail($ARGV[$i]); }
34
35	# End