Perl Regex - 打印匹配的条件正则表达式

Perl Regex - Print the matched Conditional Regex

我正在尝试从日志文件中提取一些模式,但无法正确打印它们。

日志字符串示例:

1) sequence_history/buckets/FPJ.INV_DOM_16_PRD.47269.2644?startid=2644000&endid=2644666

2) sequence_history/buckets/FPJ.INV_DOM_16_PRD.41987.9616

我想提取 3 个东西:

A = "FPJ.INV_DOM_16_PRD" B = "47269" C = 9616 or 2644666 (if the line has endid then C = 2644666 else it's 9616)

日志行可以是类型 1 或类型 2。我能够提取 A 和 B,但我被 C 困住了,因为我需要它的条件语句,但我无法正确提取它。我正在粘贴我的代码:

my $string='/sequence_history/buckets/FPJ.INV_DOM_16_PRD.47269.2644?startid=2644000&endid=2644666';

if ($string =~ /sequence_history\/buckets\/(.*)/){
    my $line = ;
    print "$line\n";
    if($line =~ /(FPJ.*PRD)\.(\d*)\./){
        my $topic_type_string = ;
        my $topic_id = ;
        print "\n\n";

    }
if($string =~ /(?(?=endid=)\d*$)/){
    # how to print match pattern here? 
    print "match\n";
}

提前致谢!

这将完成工作:

use Modern::Perl;
use Data::Dumper;

my $re = qr/(FPJ.+?PRD)\.(\d+)\..*?(\d+)$/;
while(<DATA>) {
    chomp;
    my (@l) = $_ =~  /$re/g;
    say Dumper\@l;
}

__DATA__
sequence_history/buckets/FPJ.INV_DOM_16_PRD.47269.2644?startid=2644000&endid=2644666
sequence_history/buckets/FPJ.INV_DOM_16_PRD.41987.9616

输出:

$VAR1 = [
          'FPJ.INV_DOM_16_PRD',
          '47269',
          '2644666'
        ];

$VAR1 = [
          'FPJ.INV_DOM_16_PRD',
          '41987',
          '9616'
        ];

解释:

(       : start group 1
  FPJ   : literally FPJ
  .+?   : 1 or more any character but newline, not greedy
  PRD   : literally PRD
)       : end group 1
\.      : a dot
(       : start group 2
  \d+   : 1 or more digit
)       : end group 2
\.      : a dot
.*?     : 0 or more any character not greedy
(       : start group 3
  \d+   : 1 or more digit
)       : end group 3
$       : end of string

如果您试图获取日志文件中的一些条目,那么您可以在 perl 中使用文件句柄。在下面的代码中,我试图从名为 test.log

的日志文件中获取条目

日志条目如下。

sequence_history/buckets/FPJ.INV_DOM_16_PRD.47269.2644?startid=2644000&endid=2644666
sequence_history/buckets/FPJ.INV_DOM_16_PRD.41987.9616
sequence_history/buckets/FPJ.INV_DOM_16_PRD.47269.69886?startid=2644000&endid=26765849
sequence_history/buckets/FPJ.INV_DOM_16_PRD.47269.24465?startid=2644000&endid=836783741

下面是获取所需数据的 perl 脚本。

#!/usr/bin/perl

use strict;
use warnings;

open (FH, "test.log") || die "Not able to open test.log $!";

my ($a,$b,$c);
while (my $line=<FH>)
{

        if ($line =~ /sequence_history\/buckets\/.*endid=(\d*)/)
        {
                $c= ;
                if ($line =~ /(FPJ.*PRD)\.(\d*)\.(\d*)\?/)
                {
                        $a=;
                        $b=;
                }
        }
        else
        {
                if ($line =~ /sequence_history\/buckets\/(FPJ.*PRD)\.(\d*)\.(\d*)/)
                {
                        $a=;
                        $b=;
                        $c=;
                }
        }

print "\n $a=$a\n $b=$b\n $c=$c \n";
}

输出:

 $a=FPJ.INV_DOM_16_PRD
 $b=47269
 $c=2644666 

 $a=FPJ.INV_DOM_16_PRD
 $b=41987
 $c=9616 

 $a=FPJ.INV_DOM_16_PRD
 $b=47269
 $c=26765849 

 $a=FPJ.INV_DOM_16_PRD
 $b=47269
 $c=836783741 

您可以通过将 "test.log" 替换为您要从中获取数据的日志文件名(及其路径)来使用上述代码,如下所示。

open (FH, "/path/to/log/file/test.log") || die "Not able to open test.log $!";