perl 打印目录结构

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#!/usr/bin/perl

# 递归打印目录结构

use v5.26;
use strict;
use utf8;
use autodie;
use warnings;
use Encode qw(decode encode);
use File::Spec::Functions;
use File::Basename;
use experimental 'smartmatch'; # 忽略智能匹配的错误警告
use Getopt::Long qw(GetOptions);
use Term::ANSIColor;

# 递归目录结构的次数， 0全部递归
my $depath = 0;
my $help;
my $ignores;

GetOptions (
  "depath=i" => \$depath,
  "ignores=s" => \$ignores,
  "help"     => \$help
);

if(defined($help)){
  print color('green');
  say encode('utf-8', "
    \t\$ atree [dir=./] [--ignores=./.atree] [--depath=0]
    \t\$ atree
    \t\$ atree ./lib
    \t\$ atree ./lib --depath 1
    \tor 
    \t\$ atree ./lib -d 1
    \t\$ atree -i ~/.atree -d 3
    ");
  exit;
}

my $dirPath = $ARGV[0] // "./";
unless(-d -e $dirPath){
  print color("red");
  say encode('utf-8', "$dirPath 不是目录，或则不存在!!");
  exit;
}

my $ignoresFileName = ".atree";
my $ignoresPath = $ignores // catfile($dirPath, $ignoresFileName);

# 默认忽视这些目录
my @ignores = ();

# 读取忽略文件
sub readIgnores {
  if(defined($ignoresPath) && -e $ignoresPath){
    my $fh;
    open $fh, "<", $ignoresPath;
    while(<$fh>){
      chomp;
      $_ =~ s/^\s+|\s+$//g;
      next if /^#/;
      push @ignores, $_;
    }
    close $fh;
  }
}
readIgnores();

sub scan {
  my ($dir, $dep, $depathCount) = @_;
  if($dir && -d -e $dir) {
    my @files = <$dir/* $dir/.[!.]*>;
    $depathCount++;
    for(@files){
      # next if /\.{1,2}$/g;
      my $p = catfile($_);
      if(-d $p){
        my($filename) = fileparse($p);
        unless($filename ~~ @ignores){
          say "$dep$filename/";
          if($depath eq 0 or $depathCount lt $depath){
            scan($p, "|   ".$dep."", $depathCount);
          }
        }
      }else { 
        my($filename) = fileparse($p);
        say "$dep$filename";
      }
    }
  };
}

scan($dirPath, "|-- ", 0);

λ atree -i ~/.atree -d 3
|-- analysis_options.yaml
|-- bin/
|   |-- main.dart
|-- CHANGELOG.md
|-- lib/
|   |-- dart_demo.dart
|-- pubspec.lock
|-- pubspec.yaml
|-- README.md
|-- result.html
|-- test/
|   |-- dart_demo_test.dart
|-- .dart_tool/
|   |-- build/
|   |   |-- 098d3ee73e6cc294616d3a2e2c3c81ad/
|   |   |-- entrypoint/
|   |   |-- generated/
|   |-- pub/
|   |   |-- bin/
|-- .gitignore
|-- .local-chromium/
|   |-- 672088/
|   |   |-- chrome-win/
|-- .packages

λ cat ~/.atree
.git
node_modules