/usr/share/perl/5.18.2/Text/Wrap.pm is in perl-base 5.18.2-2ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 | package Text::Wrap;
use warnings::register;
require Exporter;
@ISA = qw(Exporter);
@EXPORT = qw(wrap fill);
@EXPORT_OK = qw($columns $break $huge);
$VERSION = 2012.0818;
$SUBVERSION = 'modern';
use 5.010_000;
use vars qw($VERSION $SUBVERSION $columns $debug $break $huge $unexpand $tabstop $separator $separator2);
use strict;
BEGIN {
$columns = 76; # <= screen width
$debug = 0;
$break = '(?=\s)\X';
$huge = 'wrap'; # alternatively: 'die' or 'overflow'
$unexpand = 1;
$tabstop = 8;
$separator = "\n";
$separator2 = undef;
}
my $CHUNK = qr/\X/;
sub _xlen(_) { scalar(() = $_[0] =~ /$CHUNK/g) }
sub _xpos(_) { _xlen( substr( $_[0], 0, pos($_[0]) ) ) }
use Text::Tabs qw(expand unexpand);
sub wrap
{
my ($ip, $xp, @t) = @_;
local($Text::Tabs::tabstop) = $tabstop;
my $r = "";
my $tail = pop(@t);
my $t = expand(join("", (map { /\s+\z/ ? ( $_ ) : ($_, ' ') } @t), $tail));
my $lead = $ip;
my $nll = $columns - _xlen(expand($xp)) - 1;
if ($nll <= 0 && $xp ne '') {
my $nc = _xlen(expand($xp)) + 2;
warnings::warnif "Increasing \$Text::Wrap::columns from $columns to $nc to accommodate length of subsequent tab";
$columns = $nc;
$nll = 1;
}
my $ll = $columns - _xlen(expand($ip)) - 1;
$ll = 0 if $ll < 0;
my $nl = "";
my $remainder = "";
use re 'taint';
pos($t) = 0;
while ($t !~ /\G(?:$break)*\Z/gc) {
if ($t =~ /\G((?:(?=[^\n])\X){0,$ll})($break|\n+|\z)/xmgc) {
$r .= $unexpand
? unexpand($nl . $lead . $1)
: $nl . $lead . $1;
$remainder = $2;
} elsif ($huge eq 'wrap' && $t =~ /\G((?:(?!=[^\n])\X){$ll})/gc) {
$r .= $unexpand
? unexpand($nl . $lead . $1)
: $nl . $lead . $1;
$remainder = defined($separator2) ? $separator2 : $separator;
} elsif ($huge eq 'overflow' && $t =~ /\G((?:(?=[^\n])\X)*?)($break|\n+|\z)/xmgc) {
$r .= $unexpand
? unexpand($nl . $lead . $1)
: $nl . $lead . $1;
$remainder = $2;
} elsif ($huge eq 'die') {
die "couldn't wrap '$t'";
} elsif ($columns < 2) {
warnings::warnif "Increasing \$Text::Wrap::columns from $columns to 2";
$columns = 2;
return ($ip, $xp, @t);
} else {
die "This shouldn't happen";
}
$lead = $xp;
$ll = $nll;
$nl = defined($separator2)
? ($remainder eq "\n"
? "\n"
: $separator2)
: $separator;
}
$r .= $remainder;
print "-----------$r---------\n" if $debug;
print "Finish up with '$lead'\n" if $debug;
my($opos) = pos($t);
$r .= $lead . substr($t, pos($t), length($t) - pos($t))
if pos($t) ne length($t);
print "-----------$r---------\n" if $debug;;
return $r;
}
sub fill
{
my ($ip, $xp, @raw) = @_;
my @para;
my $pp;
for $pp (split(/\n\s+/, join("\n",@raw))) {
$pp =~ s/\s+/ /g;
my $x = wrap($ip, $xp, $pp);
push(@para, $x);
}
# if paragraph_indent is the same as line_indent,
# separate paragraphs with blank lines
my $ps = ($ip eq $xp) ? "\n\n" : "\n";
return join ($ps, @para);
}
1;
__END__
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