regex - What regular expression can I use to find in an HTML document tables that only contain one row? -

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i'm searching through html documents , trying find tables contain single row. regex can use this? i've tried negative lookahead , can isolate single row, don't see how ensure there's single <tr></tr> between <table></table> tags.

here's regex i'm working now:

<table[\w].*?<tr[\w].*?<\/tr>.*(?!.*<tr[\w])<\/table>

this should not match regex: 

<html>  <body>   <table>     <tr>       <td>a</td>     </tr>     <tr>       <td>b</td>     </tr>     <tr>       <td>c</td>     </tr>     <tr>       <td>d</td>     </tr>   </table> </body>  </html>

this should match regex:

<html>  <body>   <table>     <tr>       <td>a</td>     </tr>   </table> </body>  </html>

this should work: <table>(?>[^<]++|<(?!\/tr>))*<\/tr>(?>[^<]++|<(?!\/tr>))<\/table>

it looking 1 instance of </tr> between <table> , </table>.

details can found here: negative lookaround regex - 1 occurrence - java


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