[cl-who-devel] Parsing html again
When we generate the JavaScript <script> with cl-who we need to put the empty string at the end of the command to have the closing </script> tag like so: (with-html-output-to-string (*standard-output* nil :prologue nil :indent nil) (:html (:head (:title "Temporary page") (:script :language "JavaScript" :src "/test/scripts.js" :type "text/javascript" "")))) It will generate: <html><head><title>Temporary page</title><script language='JavaScript' src='/test/scripts.js' type='text/javascript'></script></head></html> Now if we parse the html with html-parse:parse-html command and convert it back to the string with tree-to-string (here is the thread<http://common-lisp.net/pipermail/cl-who-devel/2007-November/000109.html>about this command) we'll get the broken <script> tag without the closing </script> It's because html-parse:parse-html will produce ((:HTML (:HEAD (:TITLE "Temporary page") ((:SCRIPT :LANGUAGE "JavaScript" :SRC "/test/scripts.js" :TYPE "text/javascript"))))) Note, that there is no "" at the end of (:script) anymore. My question is where this problem should be fixed at html-parse:parse-html level so that parse-html would insert the "" when it finds the <script> tag, or there is a clean way to do it in cl-who?
"Andrei Stebakov" <lispercat@gmail.com> writes:
When we generate the JavaScript <script> with cl-who we need to put the empty string at the end of the command to have the closing </script> tag like so: (with-html-output-to-string (*standard-output* nil :prologue nil :indent nil) (:html (:head (:title "Temporary page") (:script :language "JavaScript" :src "/test/scripts.js" :type "text/javascript" "")))) It will generate: <html><head><title>Temporary page</title><script language='JavaScript' src='/ test/scripts.js' type='text/javascript'></script></head></html>
That strange. On my system, both for SBCL and CLisp, WHO> (with-html-output-to-string (*standard-output* nil :prologue nil :indent nil) (:html (:head (:title "Temporary page") (:script :language "JavaScript" :src "/test/scripts.js" :type "text/javascript")))) "<html><head><title>Temporary page</title><script language='JavaScript' src='/test/scripts.js' type='text/javascript'></script></head></html>" If you insist on using non-documented features, like tree-to-string, read the sources (although the following two variables are documented in the docs[1]). WHO> (documentation '*html-empty-tags* 'variable) "The list of HTML tags that should be output as empty tags. See *HTML-EMPTY-TAG-AWARE-P*." WHO> (documentation '*html-empty-tag-aware-p* 'variable) "Set this to NIL to if you want to use CL-WHO as a strict XML generator. Otherwise, CL-WHO will only write empty tags listed in *HTML-EMPTY-TAGS* as <tag/> (XHTML mode) or <tag> (SGML mode). For all other tags, it will always generate <tag></tag>." WHO> (member :script *html-empty-tags*) NIL [1] http://www.weitz.de/cl-who/#*html-empty-tag-aware-p* Regards, Victor. -- My blog: http://macrodefinition.blogspot.com
participants (2)
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Andrei Stebakov -
Victor Kryukov