问题
I use LibXML in Perl, which store the start line number of each node, but how i can get the last one?
I tried get last line number through..
- ..counting newlines in innerhtml of the node, but LibXML return the innerhtml in different formatting than original, so that the line number differ.
- ..node->getLastChild->line_number, but also havin no success.
Any Idea?
回答1:
If line_number returned the first line of a node as you say, all you'd need is
my $s_line_num = $node->line_number();
my $e_line_num = $node->nextSibling()->line_number();
But it doesn't. What line_number returns is actually closer the number of the last line of the node. For that, we could simply look at the previous sibling's line number.
my $s_line_num = $node->previousSibling()->line_number();
my $e_line_num = $node->line_number();
But while that's what it returns for non-element nodes, it returns the last line number of the start tag (rather than of the element as a whole) for elements. That's completely useless.
Sorry, no can do!
来源：https://stackoverflow.com/questions/14414738/perl-libxml-get-last-line-number-of-node