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230 lines
9.9 KiB
Ruby
230 lines
9.9 KiB
Ruby
# = hooks.rb - ELinks/Ruby hooks
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#
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# == Module Constants
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#
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# The following global module constants are defined
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#
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# * ELinks::VERSION - The ELinks version. :-P
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#
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# * ELinks::HOME - The path to ELinks configuration files
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#
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# == Debugging Scripts
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#
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# When debugging you can use either
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#
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# p(obj, ...)
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#
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# or
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#
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# message(string)
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#
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# to print message strings. The printed strings will be shown in a message
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# box.
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# -----
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# LAST UPDATE: 2006/06/21 -- Thomas Adam <thomas.adam22@gmail.com>
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# -----
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# Called when the user enters something into the goto URL dialog.
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#
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# Arguments:
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# @url the URL entered in the goto URL dialog.
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# @current_url the URL currently being viewed in ELinks.
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#
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# Returns the URL to go to. Return nil to use the @url argument as is
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# (leave it untouched).
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def ELinks::goto_url_hook(url, current_url)
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case url
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when /^localhost$/
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return "http://localhost/"
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when /test-ruby/
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# Currently used for debugging the exported variables.
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message(ELinks::VERSION + " - " + ELinks::HOME);
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return current_url
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end
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return url
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end
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# Called when the user decides to load some document by following a link,
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# entering an URL in the goto URL dialog, loading frames from a frameset (?)
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# etc.
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#
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# Arguments:
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# @url the URL being followed.
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#
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# Returns the URL to be followed. Return nil to use the @url argument as is.
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def ELinks::follow_url_hook(url)
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return url
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end
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# Called when a HTML document has been loaded - before the document rendering
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# begins. Makes it possible to fix up bad HTML code, remove tags etc.
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#
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# Arguments:
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# @url the URL of the document being loaded.
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# @html the source of the document being loaded.
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#
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# Returns the preformatted source of the document. Return nil to leave the
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# document source untouched.
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def ELinks::pre_format_html_hook(url, html)
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# Things start here. Note the match alternation to define those sites
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# which you want to rerender.
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# This regexp object is for matching against specific domains.
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domains="fvwm.lair.be|troubledlands.com|forums.gentoo.org"
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r = Regexp.new('http:\/\/'"#{domains}"'\/.*')
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s = Regexp.new('http:\/\/'"#{domains}"'\/view(forum|topic)|posting.*\.(html|php).*')
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if url.match(/http:\/\/edulinux.homeunix.org\/elinks-render\.html/)
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html.gsub!(/(<p class=\"example\">)(.*?)(<\/p>)/, '<h2><font color="red">\2</font></h2>')
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return html
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end
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if url.match(r)
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# Handle viewtopic.php -- this has some very slightly different
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# code to the other pages found on phpBB sites. Again, the match
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# alternations are important here -- I ought to define a Regexp
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# object to handle this eventually, which would save code
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# duplication, at any rate.
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if url.match(s)
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# Start with the menubar at the top, and remove the image
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# links. We still have to add the description back in so that
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# we know what the link references. :)
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html.gsub!(/<(img.*?)>(faq|search|memberlist|usergroups|register|profile|you have no new messages|log out \[.*?\]|chat room<\/a>)/i,'\2')
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# Remove the long list of relative links (I don't like them).
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html.gsub!(/<link rel.*? \/>/,'')
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# Turn on borders for the "main" table.
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html.gsub!(/(<table class=\"forumline\".*border=)(\".*?\")(.*?>)/,'\11\3')
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# In the LHS of the table for each postee, remove their image
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# link, and just display their status instead.
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html.gsub!(/(<span class=\"postdetails\">.*?)(<img src.*? \/>)/i,'\1')
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# Handle the options for each post. Depending on the status
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# of the person viewing this site, they could have none or all
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# of these -- either way they've been shortened.
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html.gsub!(/(<img src.*?)(alt=)(\"Reply With Quote\")\s*(title=\"reply with quote\")(.*? \/>)/i, '\1\2Q \4')
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html.gsub!(/(<img src.*?)(alt=)(\"edit\/delete this post\")\s*(title=\"edit\/delete this post\")(.*? \/>)/i, '\1\2E/D \4')
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html.gsub!(/(<img src.*?)(alt=)(\"delete this post\")\s*(title=\"delete this post\")(.*? \/>)/i, '\1\2D \4')
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html.gsub!(/(<img src.*?)(alt=)(\"post\")\s*(title=\"post\")(.*? \/>)/i, '\1\2--> \4')
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html.gsub!(/(<img src.*?)(alt=)(\"new post\")\s*(title=\"new post\")(.*? \/>)/i, '\1\2--> \4')
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html.gsub!(/(<img src.*?)(alt=)(\"view newest post\")\s*(title=\"view newest post\")(.*? \/>)/i, '\1\2--> \4')
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html.gsub!(/(<img src.*?)(alt=)(\"view latest post\")\s*(title=\"view latest post\")(.*? \/>)/i, '\1\2<-- \4')
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# See above.
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html.gsub!(/(<img src.*?)(alt=)(\"view ip address of poster\")\s*(title=\"view ip address of poster\")(.*? \/>)/i, '\1\2IP />')
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html.gsub!(/<table cellspacing=\"0\" cellpadding=\"0\"\s*border=\"0\"\s*height="18"\s*width=\"18\">/, '<table border="0">')
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html.gsub!(/(<img src.*?)(alt=)(\"view user\'s profile\")\s*(title=\"view user\'s profile\")(.*? \/>)/i, '\1\2Profile />')
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html.gsub!(/(<img src.*?)(alt=)(\"send private message\")\s*(title=\"send private message\")(.*? \/>)/i, '\1\2PM />')
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html.gsub!(/(<img src.*?)(alt=)(\"send e-mail\")\s*(title=\"send e-mail\")(.*? \/>)/i, '\1\2email />')
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html.gsub!(/(<img src.*?)(alt=)(\"visit poster\'s website\")\s*(title=\"visit poster\'s website\")(.*? \/>)/i, '\1\2Web /> ')
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html.gsub!(/(<img src.*?)(alt=)(\"Yahoo Messenger\")\s*(title=\"Yahoo Messenger\")(.*? \/>)/i, '\1\2Yahoo />')
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html.gsub!(/(<img src.*?)(alt=)(\"Msn Messenger\")\s*(title=\"Msn Messenger\")(.*? \/>)/i, '\1\2MSN />')
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end
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# PhpBB's index page defines its layout as a series of tables.
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# The main table has a class of 'forumline' -- hence setting its
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# border property to 1 helps readability and to proide distinct
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# lines between the table sections.
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html.gsub!(/(<table.*border=)(\".*?\")\s*class=\"forumline\"\s*(.*?>)/,'\11\3')
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# Change the background colour of the forum pages to white -- the
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# default is grey.
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html.gsub!(/(body \{\n\tbackground-color: )(\#E5E5E5\;)/,'\1white;')
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# Assuming you've told ELinks to remember your login details (not
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# that it matters), the "New posts" and "No New Post" indicators
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# were typically just defined in words. This looked ugly. Hence
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# in this case, I've changed the table structure to change the
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# background colour of these cells. A red colour indicates "No new
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# posts", whereas a green colour indicates "New Posts".
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html.gsub!(/(<td class=\"row1\".*?)>(<img src.*No new posts.*>)/, '\1 bgcolor="red"> </td>')
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html.gsub!(/(<td class=\"row1\".*?)>(<img src.*new posts.*>)/i, '\1 bgcolor="green"> </td>')
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# These lines appear at the bottom of the pages as a kind of "key"
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# for the above changes.
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html.gsub!(/(<img src.*\"No new posts\".*\>)/,"<font color=\"red\">No New Posts</font></td>")
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html.gsub!(/(<img src.*\"New posts\".*\>)/,"<font color=\"green\">New Posts</font></td>")
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# Remove duplicate lines within the HTML that would otherwise
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# repeat the same thing. (Damn annoying)
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html.gsub!(/<td><span class=\"gensmall\">([nN]o)|[Nn]ew posts\<\/span\>\<\/td\>/,"<td></td>")
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# As with the red/green background colour for (No|New) Posts
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# above, a blue colour in the table indicates that the selected
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# thread is locked.
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html.gsub!(/(<td class=\"row1\".*?)>(<img src.*locked.*>)/i, '\1 bgcolor="blue"> </td>')
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# Orange indicates that the selected thread has moved.
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html.gsub!(/(<td class=\"row1\".*?)>(<img src.*moved.*>)/i, '\1 bgcolor="orange"> </td>')
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# Remove image repetitions at the bottom of the page entirely (the
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# only ever serve as a key for the page above -- this is why I am
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# using colour here.)
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html.gsub!(/(<td class=\"gensmall\">(.*?<\/td>|<img src.*?><\/td>))/,'')
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html.gsub!(/(<td.*?>)(<img src.*alt=\"(Sticky|Announcement|.*Popular.*)\".* \/><\/td>)/i, '')
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html.gsub!(/(<td.*?>)(<img src.*alt=\"Forum is locked\" \/><\/td>)/,'')
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# At the very top of the pages, remove the images, but retain the
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# links by way of their alt attributes. (For things like FAQ,
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# MemeberList, etc.)
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#
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# DON'T do this for the pages matched by regexp 's' -- to do so
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# would remove many other images those pages rely on (and that
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# have been munged in the 's' section above, anyway.)
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html.gsub!(/<(img.*?)>(.*?<\/a>)/i, '\2') if not url.match(s)
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# OK -- "View Latest Post" becomes "[<--]" which hopefully points
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# to the person's name.
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html.gsub!(/(<img src.*?)(alt=)(\"view (newest|latest) post\")\s*(title=\"view (newest|latest) post\")(.*? \/>)/i, '\1\2<-- \4') if not url.match(s)
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# And in a similar fashion, remove the "Goto Page" links.
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html.gsub!(/(<img src.*?alt=\"goto page\".*? \/>)/i,'')
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# No need to have this in the table at the bottom.
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html.gsub!(/(<td class=\"row1\".*?><img src.*alt=\"who is online\".* \/><\/td>)/i,'')
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# Remove all the Link: rel references
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html.gsub!(/<link rel.*? \/>/,'')
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# Some phpBB sites use frames. Ugh
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html.gsub!(/(<table width=\"100%\" cellpadding=\"4\" cellspacing=\"1\" border=)1>/,'\10>')
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html.gsub!(/(<frameset.*?)(border=)\"2\"(.*)(frameborder=)\"(.*?)\"(.*>)/i,'\1\2"0"\3\4"no"\6')
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end
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return html
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end
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# Determining what proxy, if any, should be used to load a requested URL.
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#
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# Arguments:
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# @url the URL to be proxied.
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#
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# The hook should return one of the following:
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# 1. "<host>:<port>" - to use the specified host and port
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# 2. "" - to not use any proxy
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# 3. nil - to use the default proxies
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def ELinks::proxy_hook(url)
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return nil
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end
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# Called when ELinks quits and can be used to do required clean-ups like
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# removing any temporary files created by the hooks.
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def ELinks::quit_hook
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end
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