xml - 从 XML 标记内的多行中删除空格

Question

我有这个 XML 块：

 <context id="134">Multiline incoming: 
    This is my 1st line. 
    This is my 2nd line. 
    This is my 3rd line. 
 </context> 

有没有办法使用任何 XML 解析库（如 Perl 中的 LibXML）自动删除间距？我可以手动摆脱它们，但如果有一种方法已经到位，我很感兴趣。

我希望我的输出是：

$context = "Multiline incoming: This is my 1st line. This is my 2nd line. This is my 3rd line." 

标签： xmlperlxml-libxml

Answer 1

你只需要这样：

$context =~ s/^\s+//;          # Remove leading whitespace
$context =~ s/\s*\v\s*/ /g;    # Replace whitespace that includes vertical whitespace 
$context =~ s/\s+\z//;         # Remove trailing whitespace