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#!/usr/bin/perl |
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use strict; |
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use Getopt::Std; |
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use FindBin;use lib $FindBin::Bin; |
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|
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my $usage = q/Usage: |
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lcalc [-M|-s] |
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|
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-L : show maximum line length |
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-l : show minimum line length |
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-s : show sum and average of all numbers found in the first column |
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/; |
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umask 0002; |
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getopts('Llso:') || die($usage."\n"); |
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my ($minlen, $maxlen, $sum, $count)=(999999999,0,0,0); |
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my $outfile=$Getopt::Std::opt_o; |
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if ($outfile) { |
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open(OUTF, '>'.$outfile) || die("Error creating output file $outfile\n"); |
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select(OUTF); |
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} |
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# -- |
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while (<>) { |
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s/[\n\r]+//s; |
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my $len=length($_); |
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$minlen=$len if ($len<$minlen); |
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$maxlen=$len if ($len>$maxlen); |
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next if $len==0; |
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my ($n)=(m/([eE\-\+\.\d]+)/); |
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$sum+=$n if length($n)>0; |
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$count++; |
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} |
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if ($Getopt::Std::opt_l || $Getopt::Std::opt_s) { |
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print "Min line length: $minlen\n"; |
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} |
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if ($Getopt::Std::opt_L || $Getopt::Std::opt_s) { |
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print "Max line length: $maxlen\n"; |
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} |
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if ($Getopt::Std::opt_s) { |
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print "$count non-empty lines found.\n"; |
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my $avg=$sum/$count; |
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print "Sum : $maxlen (average: $avg)\n"; |
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} |
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|
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# -- |
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if ($outfile) { |
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select(STDOUT); |
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close(OUTF); |
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} |
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|
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#************ Subroutines ************** |
