Re^4: Regular Expression

Replies are listed 'Best First'.
Re^5: Regular Expression by ikegami (Patriarch) on Jun 28, 2005 at 19:38 UTC
Mulitple closing body elements are illegal, so multiple closing body tags may not a problem. That problem is `</body>` could appear in a comment or in quotes.	[reply] [d/l]
Re^5: Regular Expression by CountZero (Bishop) on Jun 28, 2005 at 19:54 UTC
Nope, not rhetorical, just a trap! This is valid XHTML: `<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w +3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta content="text/html; charset=ISO-8859-1" http-equiv="content-ty +pe" /> <title>test</title> </head> <body/> </html>` [download] No `</body>` tag, so a naive regex breaks again. Of course you are right, the OP only wanted to match the `<body>` tag not the body-element. CountZero "If you have four groups working on a compiler, you'll get a 4-pass compiler." - Conway's Law	[reply] [d/l] [select]
Re^6: Regular Expression by Transient (Hermit) on Jun 28, 2005 at 19:58 UTC
Funny you should mention that (we were discussing this with the <p> tag) - it's not valid because body isn't defined with an EMPTY content model (as is br, hr, etc.) w3c specs shown here	[reply]
Re^7: Regular Expression by CountZero (Bishop) on Jun 28, 2005 at 20:20 UTC
Well, I'm not sure about that. The DTD of XHTML defines the `<body>`-tag as `<!ELEMENT body %Block;>` and `%Block` is further defined as `<!ENTITY % block "p \| %heading; \| div \| %lists; \| %blocktext; \| fieldset \| table"> <!ENTITY % Block "(%block; \| form \| %misc;)">` [download] Watch the `` in the definition of %Block: zero or more times! So %Block can be empty, hence `<body>` can be empty and can be written as `<body/>`. Also the official validator at W3C says it is valid XHTML1.0 CountZero "If you have four groups working on a compiler, you'll get a 4-pass compiler." - Conway's Law	[reply] [d/l] [select]