用perl统计文件夹中文件个数，行数，文件大小，用作项目统计

#! /usr/bin/perl
#如果运行perlscript 必须要安装perl，不能用绿色的。
#perllib 环境变量加上d:/perl/lib
use warnings;

sub countFileLine;
sub get_dir;

$totallines = 0;
$totalfiles = 0;
$totaldirs = 0;

my %filecatagorycount;
my %filecatagorysize;

get_dir @ARGV;
print "所有文件总行数：".$totallines . " " .$totallines/10000;print "万行/n";
print "所有文件总数：".$totalfiles;print "/n";
print "所有文件夹总数：".$totaldirs;print "/n";
# 打印每种类型文件个数
foreach(sort keys%filecatagorycount) #排序
{
print "后缀名为【 $_ 】文件个数 => $filecatagorycount{$_}"," 文件大小 => ",$filecatagorysize{$_}/1024/1024 ,"M","/n";
}
my @filter = qw(h cpp pro pri );
my $filtersize = 0;
foreach (@filter)
{
print "/t".$_ . "/n";
$filtersize+=$filecatagorysize{$_}/1024/1024;
#print; #打印默认变量
}
print "通过[ @filter ] 过滤后总大小为 ".$filtersize,"M/n";

# 读取文件行数

open (FILE, $dataFile) or print "Can't open $dataFile: $!";
my @fileList = <FILE>;
close (FILE);
my $totalfile += ($#fileList + 1);

这种方法只能读取较小文件。

# 读取文件行数
sub countFileLine
{
my $file = shift;
my $count = 0;
open (FH,"$file") or die "Can't open the file:$!/n";
++$count while (<FH>); #####$count即为文件内容行数。如果每行长度一样的话，可以读取文件大小，然后除以每行的长度。
close FH;
my @lines = split(//./,$file);
my $linescount = @lines;
$filesize = -s $file;
#print $file.$filesize ; print "/n";
# 查处字符串长度
$len = rindex $lines[$linescount-1]."/$", "/$";
if($linescount > 1 && $len < 6)
{
$filecatagorycount{$lines[$linescount-1]}++;
$filecatagorysize{$lines[$linescount -1]}+= $filesize;
}
else
{
$filecatagorycount{"NOEXT"}++;
$filecatagorysize{"NOEXT"}+= $filesize;
}

#print @lines;print "/n";
# print "$count lines in $file/n";
$totallines += $count;
$totalfiles++;
}

# 读取目录文件行
sub get_dir
{
my $dir = shift;
print "$dir/n";
opendir (DIR,"$dir") or die "Can't open dir:$!";
my @file = readdir(DIR);
closedir(DIR);
foreach (@file)
{
next if $_ eq '.' or $_ eq '..';
my $file = "$dir/$_";
if (-d $file)
{
get_dir($file);
}
else
{
countFileLine($file) if -T $file;
}
}
$totaldirs++;
}