#!/usr/bin/perl
# public domain
# version 1.5

use Text::Wrap;

if (!$ARGV[0] || $ARGV[0] eq "-h" || $ARGV[0] eq "--help") {
  print "wrap 1.5 - Word wrap files. Usage:\n wrap [filenames]\n";
  exit(0);
}

foreach $i (@ARGV) {
  if (!(-T $i)) {
    print "This does not appear to be a text file! Really word wrap? [y/N] ";
    chomp($foo = <STDIN>);
    if ($foo ne "y" || $foo ne "Y") { next; }
  }
  if (-f "$i.wrap") {
    print "$i.wrap found! Delete or move it before continuing.\n";
  } elsif (!(-r $i)) {
    print "$i does not exist. Skipping it...\n";
  } else {
    print "Wrapping $i... ";
    open FOO, $i;
    open BAR, ">$i.wrap";
    foreach (<FOO>) { print BAR wrap("\n", "", $_); }
    close BAR;
    close FOO;
    unlink $i;
    rename "$i.wrap", $i;
    print "Done.\n";
  }
}