我从具有多个HTML标签的数据库中获取字符串,并希望在终端中显示带有颜色的标记字。我用Perl6试过,但找不到工作解决方案。下面是步骤,我想:用Perl6中的彩色文本替换HTML <i>标签
use v6;
use Terminal::ANSIColor;
my $str = "Text mit einem <i>kursiven</i> und noch einem <i>schrägen</i> Wort.";
my $str1 = "Text mit einem { colored("kursiven" , 'blue') } und noch einem { colored("schrägen" , 'blue') } Wort.";
say "\nOriginal String:";
say $str ~ "\n";
say "and how it should look like:";
say $str1 ~ "\n";
say "Var 01: Remove the tags in 2 steps:";
my $str_01 = $str.subst("<i>" , "" , :g).subst("</i>" , "" , :g);
say $str_01;
say "==> ok\n";
say "Var 02: Remove the tags with dynamic content:";
my $str_02 = $str.subst(/"<i>"(.*?)"</i>"/ , -> { $0 } , :g);
say $str_02;
say "==> ok with non greedy search\n";
say "Var 03: Turns static content into blue:";
my $str_03 = $str.subst(/"<i>kursiven</i>"/ , -> { colored("kursiven" , 'blue') } , :g);
say $str_03;
say "==> nearly ok but second part not replaced\n";
say "Var 04: Trying something similar to Var 01:";
my $str_04 = $str.subst("<i>" , "\{ colored\(\"" , :g)
.subst("</i>" , "\" , 'blue'\) }" , :g);
say $str_04;
say "==> final String is ok but the \{ \} is just displayed and not executed !!\n";
say "Var 05: Should turn dynamic content into blue";
my $str_05 = $str.subst(/"<i>(.*?)</i>"/ , -> { colored($0 , 'blue') } , :g);
say $str_05;
say "==> total fail\n";
是否有可能做到这一点在一个步骤或我确实有先用一个静态的占位符代替标签和文本,然后再更换呢?
也许S/EVAL /正则表达式/在标签? – raiph