处理嵌套的分隔符在Perl

Question

use strict; 
use warnings; 

my %result_hash =(); 
my %final_hash =(); 
Compare_results(); 

foreach my $key (sort keys %result_hash){ 
    print "$key \n"; 
    print "$result_hash{$key} \n"; 
} 

sub Compare_results 
{ 

    while (<DATA>) 
    { 
    my($instance,$values) = split /\:/, $_; 
    $result_hash{$instance} = $values; 

    } 
} 
__DATA__ 
1:7802315095\d\d,7802315098\d\d;7802025001\d\d,7802025002\d\d,7802025003\d\ d,7802025004\d\d,7802025005\d\d,7802025006\d\d,7802025007\d\d 
2:7802315095\d\d,7802025002\d\d,7802025003\d\d,7802025004\d\d,7802025005\d\d,7802025006\d\d,7802025007\d\d 

输出

1 
7802315095\d\d,7802315098\d\d;7802025001\d\d,7802025002\d\d,7802025003\d\d,7802025004\d\d,7802025005\d\d,7802025006\d\d,7802025007\d\d 

2 
7802315095\d\d,7802025002\d\d,7802025003\d\d,7802025004\d\d,7802025005\d\d,7802025006\d\d,7802025007\d\d 

荫试图获取每个键的值，然后再次尝试从结果哈希分裂逗号分隔值，如果我发现任何值我会分号想要将左值和右值存储在单独的哈希键中。

类似下面

1.#split the value of result_hash{$key} again by , and see whether any chunk is seperated by ; 
2. #every chunk without ; and value on left with ; should be stored in 
@{$final_hash{"eto"}} = ['7802315095\d\d','7802315098\d\d','7802025002\d\d','7802025003\d\d','7802025004\d\d','7802025005\d\d','7802025006\d\d','7802025007\d\d'] ; 
3.#Anything found on the right side of ; has to be stored in 
@{$final_hash{"pro"}} = ['7802025001\d\d'] ; 

有，我可以处理子程序中的一切呢？我可以让代码更简单

更新：

我想在一个单杆分割字符串，但它只是挑选与分号的值，而忽略一切

foreach my $key (sort keys %result_hash){ 
# print "$key \n"; 
# print "$result_hash{$key} \n"; 
my ($o,$t) = split(/,|;/, $result_hash{$key}); 
    print "Left : $o \n"; 
    print "Left : $t \n"; 
    #push @{$final_hash{"eto"}}, $o; 
    #push @{$final_hash{"pro"}} ,$t; 
} 

}

我帮助后更新的代码

sub Compare_results 
{ 
    open my $fh, '<', 'Data_File.txt' or die $!; 
    # split by colon and further split by , and ; if any (done in insert_array) 
    my %result_hash = map { chomp; split ':', $_ } <$fh> ; 
    foreach (sort { $a <=> $b } (keys %result_hash)) 
    { 
    ($_ < 21) 
     ? insert_array($result_hash{$_}, "west") 
     : insert_array($result_hash{$_}, "east"); 
    } 
} 


sub insert_array() 
{ 
    my ($val,$key) = @_; 
    foreach my $field (split ',', $val) 
    { 
    $field =~ s/^\s+|\s+$//g; #/turn off editor coloring 
    if ($field !~ /;/) { 
     push @{ $file_data{"pto"}{$key} }, $field ; 
    } 
    else { 
     my ($left, $right) = split ';', $field; 
     push @{$file_data{"pto"}{$key}}, $left if($left ne '') ; 
     push @{$file_data{"ero"}{$key}}, $right if($right ne '') ; 
    } 
    } 
    } 

感谢

Answer 1

更新  增加一个两通正则表达式，在最后

---

只是进行系统地分析一步字符串一步。事实上，你需要连续的分裂和一个特定的分离规则，这使得它在一个镜头中难以实施。最好有一个明确的方法比一个怪物的声明。

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

my (%result_hash, %final_hash); 

Compare_results(); 

say "$_ => $result_hash{$_}" for sort keys %result_hash; 
say '---'; 
say "$_ => [ @{$final_hash{$_}} ]" for sort keys %final_hash; 

sub Compare_results 
{ 
    %result_hash = map { chomp; split ':', $_ } <DATA>; 

    my (@eto, @pro); 
    foreach my $val (values %result_hash) 
    { 
     foreach my $field (split ',', $val) 
     { 
      if ($field !~ /;/) { push @eto, $field } 
      else { 
       my ($left, $right) = split ';', $field; 
       push @eto, $left; 
       push @pro, $right; 
      } 
     }  
    }   
    $final_hash{eto} = \@eto; 
    $final_hash{pro} = \@pro; 
    return 1;     # but add checks above 
} 

这里有一些低效率，没有错误检查，但方法很简单。如果你的意见不大，请改变上述内容，逐行处理，你明确知道该怎么做。它打印

 
1 => ... (what you have in the question) 
--- 
eto => [ 7802315095\d\d 7802315098\d\d 7802025002\d\d 7802025003\d\ d ... 
pro => [ 7802025001\d\d ] 

请注意，您的数据确实有一个宽松的\d\ d。

---

我们不需要建全哈希%result_hash此而只需要:后挑线的一部分。由于它是全局声明的，所以我可以放弃它，所以你可能想要它。如果它其实是不需要对自己这简化

sub Compare_results { 
    my (@eto, @pro); 
    while (<DATA>) { 
     my ($val) = /:(.*)/; 
     foreach my $field (split ',', $val) 
     # ... same 
    } 
    # assign to %final_hash, return from sub 
} 

感谢ikegami征求意见。

---

只是为了好奇的缘故，这里是分两次用正则表达式

sub compare_rx { 
    my @data = map { (split ':', $_)[1] } <DATA>; 
    $final_hash{eto} = [ map { /([^,;]+)/g } @data ]; 
    $final_hash{pro} = [ map { /;([^,;]+)/g } @data ]; 
    return 1; 
} 

该挑选哪些不是,或;所有字符，使用否定字符类，[^,;]。所以这是他们中的第一个，从左到右。它在全球范围内执行此操作，/g，因此它会继续处理该字符串，收集“剩余”,或;的所有字段。然后它作弊了一下，挑选了;的所有[^,;]。 map用于对所有数据行执行此操作。

如果%result_hash需要建立它，而不是@data，然后用my @values = values %hash_result撤出它的值，并与进料@values地图。

或者折线由线（再次，你可以建立%result_hash，而不是直接采取$data）

my (@eto, @pro); 
while (<DATA>) { 
    my ($data) = /:(.*)/; 
    push @eto, $data =~ /([^,;]+)/g; 
    push @pro, $data =~ /;([^,;]+)/g; 
}