Regex Perl将字符剪切到旋转正则表达式，打印到行尾

我有这些数据，我想删掉日期，然后打印从首字母到结尾的所有内容。 我绘制了首字母缩写

30th Mar 2020 5:53:18 pm Charlie Brown: BJ: Bloomberg Runs
30th Mar 2020 5:53:27 pm Charlie Brown: DS: ICE DATA = INC1018483661
30th Mar 2020 6:42:43 pm Boris Yeltsin: Cortese's ICE logs is for the Bloomberg Runs issue
30th Mar 2020 6:43:28 pm Charlie Brown: yeap
31st Mar 2020 4:11:22 am Ishtar Johnson: VK : RE: XS2018777099 & XS2018777172 - INC1018491954
31st Mar 2020 6:31:17 am Tommy Boy: NW: RE: SABSM 6.125 YTW - INC1018495843
31st Mar 2020 7:26:40 am Tommy Boy: AP: RE: Rolling 7yrs - INC1018497102
31st Mar 2020 7:45:36 am Tommy Boy: JK: RE: Chris White books - INC1018497380

这是代码-

#!/usr/bin/perl

use strict;
use warnings;

my @team = ("AP","II","DS","WJ", "JK","LC","BJ") ;
my ( $team_regex ) = map {qr /$_/} join "|", map {quotemeta} @team;

my @orderdTeam ;
my $filename = shift @ARGV ;
open(my $fh, '<', $filename) or die "Could not open file $filename $!";
while (my $line = <$fh> ) {
        #$line =~ /($team_regex .*)/s  ;
        $line = /($team_regex .*)/s  ;
        print "$line\n";

}
close $fh;

这就是我要找的。“汤米男孩NW:”和“伊什塔约翰逊VK:”是我们球队的一部分，但来自欧洲。只会显示地图阵列“@team_regex”票证中的美国队成员。 时间和日期将从队列中删除

BJ: Bloomberg Runs
DS: ICE DATA = INC1018483661
AP: RE: Rolling 7yrs - INC1018497102
JK: RE: Chris White books - INC1018497380

第14行是这一行：

$line = /($team_regex .*)/s  ;

匹配运算符（

/…/

）使用

=~

运算符处理绑定到它的变量，或者如果未给定此类变量，则使用

$

。您没有使用

=~

，因此匹配运算符尝试与

$

进行匹配。而

$\uuu

不包含任何数据，因此Perl会给您显示的“未定义值”警告

我认为您希望将正则表达式与

$line

的内容相匹配。因此，您需要使用

=~

而不是

=

——就像在注释行中一样

$line =~ /($team_regex .*)/s  ;

但在上面的一条评论中，您解释说您已将其注释掉，因为：

---

注释行不剪切任何字符-它打印整个行

当然，这是因为您没有编写任何代码来以任何方式更改

$line

。但是你想要的是比赛后的

$1

，所以打印出来

$line =~ /($team_regex .*)/s  ;
print $1;

但是像

$1

这样的正则表达式变量只能在成功匹配时设置，因此在打印它们之前检查匹配是否有效很重要。您可以通过将匹配运算符放入

if

语句中来实现这一点

if ($line =~ /($team_regex .*)/s) {
  print $1;
}

更新：哦，这不起作用，因为数据中的团队代码后面跟一个冒号，而不是空格（正如正则表达式所假定的那样）。因此，将其更改为：

if ($line =~ /($team_regex:.*)/s) {
  print $1;
}

---

请参阅下面的代码片段以演示如何实现所需的结果

我认为团队的正则表达式应该以不同的方式形成。跳过所有与正则表达式不匹配的记录。然后将前5个数据列替换为nothing并打印结果

use strict;
use warnings;
use feature 'say';

my @team = ("AP","II","DS","WJ", "JK","LC","BJ");

my $re_team = join ': |', @team;

my $filename = shift;

open(my $fh, '<', $filename)
    or die "Could not open file $filename $!";

while( <$fh> ) {
    chomp;
    next unless /$re_team/;
    s/^(\S+ ){5}//;
    say;
}

close $fh;

输出

Charlie Brown: BJ: Bloomberg Runs
Charlie Brown: DS: ICE DATA = INC1018483661
Tommy Boy: AP: RE: Rolling 7yrs - INC1018497102
Tommy Boy: JK: RE: Chris White books - INC1018497380

BJ: Bloomberg Runs
DS: ICE DATA = INC1018483661
AP: RE: Rolling 7yrs - INC1018497102
JK: RE: Chris White books - INC1018497380

$VAR1 = [
          'BJ: Bloomberg Runs',
          'DS: ICE DATA = INC1018483661',
          'AP: RE: Rolling 7yrs - INC1018497102',
          'JK: RE: Chris White books - INC1018497380'
        ];

替换

s/^（\s+{5}/到
s/^（\s+{7}/以获得以下输出

BJ: Bloomberg Runs
DS: ICE DATA = INC1018483661
AP: RE: Rolling 7yrs - INC1018497102
JK: RE: Chris White books - INC1018497380

当然，代码可以写成

use strict;
use warnings;
use feature 'say';

my @team = ("AP","II","DS","WJ", "JK","LC","BJ");

my $re_team = join ': |', @team;

my $filename = shift;

open(my $fh, '<', $filename)
    or die "Could not open file $filename $!";

/($re_team)/ && say /($1.*)/  while <$fh>;

close $fh

如果需要捕获数据

use strict;
use warnings;
use feature 'say';

use Data::Dumper;

my @team = ("AP","II","DS","WJ", "JK","LC","BJ");

my $re_team = join ': |', @team;

my @data;

/($re_team)/ && push @data,/($1.*)/  while <>;

say Dumper(\@data);

注释行不剪切任何字符-它打印整个行
use strict;
use warnings;
use feature 'say';

my @team = ("AP","II","DS","WJ", "JK","LC","BJ");

my $re_team = join ': |', @team;

/($re_team)/ && say /($1.*)/  while <>;

BJ: Bloomberg Runs
DS: ICE DATA = INC1018483661
AP: RE: Rolling 7yrs - INC1018497102
JK: RE: Chris White books - INC1018497380

use strict;
use warnings;
use feature 'say';

use Data::Dumper;

my @team = ("AP","II","DS","WJ", "JK","LC","BJ");

my $re_team = join ': |', @team;

my @data;

/($re_team)/ && push @data,/($1.*)/  while <>;

say Dumper(\@data);

$VAR1 = [
          'BJ: Bloomberg Runs',
          'DS: ICE DATA = INC1018483661',
          'AP: RE: Rolling 7yrs - INC1018497102',
          'JK: RE: Chris White books - INC1018497380'
        ];