終端控制轉義序列：如何通過「\ e [6n」捕獲行和列？

Question

如何捕捉變量中的行和列而不是打印出來（這裏是^[[12;1R）？

#!/usr/bin/env perl 
use warnings; 
use 5.012; 

print "\n" x 10; 

say "\e[6n"; 

Answer 1

我發現這一點：

#!/usr/bin/env perl 
use warnings; 
use 5.012; 
use Term::ReadKey; 

ReadMode 4; 

system('clear') == 0 or die $?; 

print "\e[6n"; 
my ($x, $y) = getch(); 
say "Col: $x - Row: $y"; 


print "Hello world\n" x 6; 

print "\e[6n"; 
($x, $y) = getch(); 
say "Col: $x - Row: $y"; 


print "String\n" x 5; 
print "go to column 21 -> |"; 


print "\e[6n"; 
($x, $y) = getch(); 
say "Col: $x - Row: $y"; 

ReadMode 0; 

sub getch { 
    my $c = ReadKey 0; 
    if ($c eq "\e") { 
     my $c = ReadKey 0.10; 
     if ($c eq '[') { 
      my $c = ReadKey 0; 
      if ($c =~ /\A\d/) { 
       my $c1 = ReadKey 0; 
       if ($c1 ne '~') { 
        my $y = 0 + $c; 
        while (1) { 
         last if $c1 eq ';'; 
         $y = 10 * $y + $c1; 
         $c1 = ReadKey 0; 
        } 
        my $x = 0; 
        while (1) { 
         $c1 = ReadKey 0; 
         last if $c1 eq 'R'; 
         $x = 10 * $x + $c1; 
        } 
        return $x, $y; 
       } 
      } 
     } 
    } 
} 

Answer 2

抱歉過了好一會兒，我很久以前加入此功能，則忘了更新的問題;）

use Term::TermKey; 

my $termkey = Term::TermKey->new(\*STDIN); 

STDOUT->autoflush(1); 
print "\e[6n"; 

while($termkey->waitkey(my $key) == RES_KEY) { 
    if($key->type_is_position) { 
     printf "Position is %d, %d\n", $key->col, $key->line; 
     last; 
    } 
}