Perl，计算字符并在单词末尾中断

Question

我试图在 300 个字符处打断，效果很好，但我不希望它在单词中间打断。我想找到一个词的结尾或下一个可用的空格。任何帮助将不胜感激。

foreach (@$comp) {
    my $c = $_;
    $c->{reviews} = ($c->{reviews} - 1);
    my $stars;
    if($c->{reviews} == 0) {
        $stars = 0;
    } else {
        $stars = int($c->{reviews_total} / $c->{reviews});
    } 
    $c->{stars} = $stars; 

    if($c->{title}) { 
        $c->{name} = $c->{title}; 
        $c->{event} = "FOO"; 
    }
    $c->{description} =~ s/BREAK//g; 

    my (@desc) = split(//, $c->{description});   

    my $adesc;
    my $rowc = 0;
    my $count = 0;

    while($count < 300 ) {
         $adesc .= @desc[$count];
         $rowc++;
         $count++;
    }

    $c->{description} = $adesc;= '...';
}

Answer 1

让我们看看是什么perldoc perlfaq4不得不说:

How do I reformat a paragraph?

Use Text::Wrap (part of the standard Perl distribution):

use Text::Wrap;
print wrap("\t", '  ', @paragraphs);

The paragraphs you give to Text::Wrap should not contain embedded newlines. Text::Wrap doesn't justify the lines (flush-right).

---

如果你不喜欢怎么办？

访问CPAN

• Text::Wrap::Smart

  use Text::Wrap::Smart 'wrap_smart';
  use feature 'say';
  
  my $text = 'lorem ipsum dolor sit amet' x 500;
  
  my $options = { 
                  no_split     => 1,   # Activates 'fuzzy matching'
                  max_msg_size => 300,
                };
  
  say for wrap_smart( $text, $options );
  

• Text::Flow::Wrap

• Text::Reform

• Unicode::LineBreak