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ls --color support for systems that don't have it, like AIX, and when you don't want to install gnu
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#!/usr/bin/perl | |
use strict; | |
use Getopt::Long qw(:config pass_through no_ignore_case bundling); | |
my $do_color; | |
GetOptions("colors"=>\$do_color); | |
my @buf; | |
my $do_cols; | |
my $cur_col; | |
my $max_len; | |
my $num_cols; | |
my $screen_width; | |
my $cur_len; | |
if (!$do_color) { | |
exec("ls", @ARGV); | |
} else { | |
my ($do_long); | |
GetOptions("l"=>\$do_long); | |
if ($do_long) { | |
unshift @ARGV, "-l"; | |
} elsif (-t STDOUT) { | |
$do_cols=1; | |
$screen_width=`tput cols`; chomp $screen_width; | |
} | |
for (@ARGV) { | |
s/\"/\\\"/g; | |
$_="\"$_\""; | |
} | |
open(I,"ls @ARGV|"); | |
while(<I>) { | |
chomp; | |
my $type; | |
if (!$do_long) { | |
$type = 'x' if -x $_; | |
$type = 'd' if -d $_; | |
$type = 'l' if -l $_; | |
$type = 's' if -k $_; | |
} else { | |
$type = $1 if /^(.)/; | |
$type = 'x' if $type eq '-' && (/^...x/ || /^......x/ || /^.........x/); | |
} | |
if ($do_cols>0) { | |
if ($do_cols==2) { | |
print_col(); | |
} else { | |
push @buf, [$type, $_]; | |
if (length($_) > $max_len) { | |
$max_len = length($_); | |
} | |
if (@buf > 1000) { | |
print_buf(); | |
} | |
} | |
} else { | |
print colorize($type, $_), "\n"; | |
} | |
} | |
if ($screen_width > 0) { | |
print_buf(); | |
if ($cur_col) { | |
print "\n"; | |
} | |
} | |
} | |
sub print_col { | |
my ($type, $str) = @_; | |
my $padding = " " x ((($max_len+1)*$cur_col) - $cur_len); | |
print $padding; | |
$cur_len+=(length($str)+length($padding)); | |
print colorize($type, $str); | |
if ($cur_col==($num_cols-1)) { | |
print "\n"; | |
$cur_col=0; | |
$cur_len=0; | |
} else { | |
++$cur_col; | |
} | |
} | |
sub print_buf { | |
$num_cols = int($screen_width/($max_len+2)); | |
for (@buf) { | |
print_col(@$_); | |
} | |
$do_cols=2; | |
@buf=(); | |
} | |
sub colorize { | |
my ($type, $str) = @_; | |
($type eq 'd') and ($str="\033[1;34m$str\033[0m"); | |
($type eq 'l') and ($str="\033[1;36m$str\033[0m"); | |
($type eq 's') and ($str="\033[1;31m$str\033[0m"); | |
($type eq 'x') and ($str="\033[1;32m$str\033[0m"); | |
$str="\033[0m$str"; | |
return $str; | |
} |
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