Re: Yahoo! Groups: Welcome to sed-users. Visit today!

thank you Cameron! very useful!


On Tue, Apr 24, 2012 at 1:05 PM, Joe Gain <[email protected]> wrote:

> Hey Luigi,
>
> one of sed's problems is dealing with newline characters and you have
> your html anchor tags split over new lines. There's probably a smart
> way to overcome this using sed (and sed's line buffer), but it's not
> an easy alternative.
>
> I think the best way for you is to:
>
> 1. remove all the new line characters,or at least don't split tags
> with new lines (there are many ways to do this, depending on which
> version of sed you are using, could be as easy as # sed -n -e
> 's/\n//g; p' data.html)
>
> 2. remove the surrounding tags from the text that you want in your
> anchor attributes with something like:
> sed -n -e 's/\(<a[^h]*href="\)\([^"]*\)"\([^>]*>\)/\2/g; p'
>
> 3. remove all the other tags, using the sed script you have already.
> (You can pipe the output of 2 into 3.)
>
> Hope this helps.
>
> Joe
>
> PS. In general, you can look at some other tools like perl or ruby to
> make your life easier.
>
> On Mon, Apr 23, 2012 at 11:21 AM, Luigi Assom <[email protected]>
> wrote:
> > Hi community!
> > I subscribed to sed group because I need to do some parsing of txt files
> > with html.
> > I am totally new to sed, I 've just discovered it yesterday!!
> > I tried something (strip all html tag) and I succeed, but I need
> something
> > more complex and I cannot dig it - could you please help with the syntax?
> >
> > I need to extract URL contained in <a> tags, only the part like
> /RED/BLUE/
> > , and to strip out every other tag, so that I have clean text and only
> > THOSE urls.
> >
> > I made this attempt:
> >
> > txt structure:
> >
> >> </b> (Displaying X Results)<table><tr> <td valign="top"><a
> >> href="/RED/BLUE/" onClick="(new Image()).src='/url/';"><img
> src="image.jpg"
> >> width="30" height="30" border="0"></a>&nbsp;</td><td align="right"
> >> valign="top"><img src="/images/c.gif" width="1"
> height="6"><br>1.</td><td
> >> valign="top"><img src="/images/c.gif" width="1" height="6"><br><a
> >> href="/RED/BLUE/" onclick="(new Image()).src='url/';">TEXT TO
> EXTRACT</a>
> >> TEXT TO EXTRACT                 <p class="find-alike">alike "OTHER TEXT
> TO
> >> EXTRACT" - BLABLA <em>(blabla)</em></p>       <p
> class="find-alike">alike
> >> "OTHER TEXT TO EXTRACT" - BALABLA</p>   </td></tr><tr> <td
> >> valign="top"><img src="/images/b.gif" alt="" width="23"
> height="1"></td><td
> >> align="right" valign="top">2.</td><td valign="top"><a href="/RED/BLUE/"
> >> onclick="(new Image()).src='url/';">TEXT TO EXTRACT</a> TEXT TO EXTRACT
> >>               </td></tr>
> >>
> >
> > command:
> > sed -e 's/<[^>]*>//g;/</N;//b'
> >
> > it works, but strip out all tags.
> >
> > I've tried to customize it, but nothing happened:
> > sed -e '/RED/!d;'
> >
> > I also tried some script on the web but I cannot make them work...
> > I even new in using Unix :)
> > I am working with macbook sed based.
> >
> >
> > Could you please help out in this task?
> > Thank you!
> > Luigi
> >
> >
> > [Non-text portions of this message have been removed]
> >
> >
> >
> > ------------------------------------
> >
> > --
> > Yahoo! Groups Links
> >
> >
> >
>
>
>
> --
> joe gain
>
> jacob-burckhardt-str. 16
> 78464 konstanz
> germany
>
> +49 (0)7531 60389
>
> (...otherwise in ???)
>



-- 
Luigi Assom

Skype contact: oggigigi


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