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Re: Retrieve a web page into buffer and insert some text into it.

From: ken
Subject: Re: Retrieve a web page into buffer and insert some text into it.
Date: Thu, 29 Jul 2010 16:01:24 -0400
User-agent: Thunderbird 2.0.0.24 (X11/20100721) 
On 07/29/2010 11:22 AM filebat Mark wrote:
> Hi Ken

Hi, Denny.  Thanks for replying


> Where do you set the value of url in the second function?

It needs to be passed from the first defun, but I don't know the syntax
for doing that.  The url-retrieve function is a little complex in terms
of its arguments.  I think it's stumped even the experts on this list.


> One big enhancement shall be setting the coding system of the temp
> buffer, based on the charset of the html page.

Thanks for bringing that up.  Yeah, I followed that on your thread.  I
might have to deal with that too.  If, after I get the main part of my
code working how I want it, I find it's having that problem, I'll review
your emails (which I still have) and perhaps get back to you for some tips.


> Regards,
> Denny

Back at ya!
ken


> 
> On Thu, Jul 29, 2010 at 7:46 AM, ken <gebser@mousecar.com
> <mailto:gebser@mousecar.com>> wrote:
> 
>     Lennart suggested I use a different defun, url-copy-file.  I tried that
>     instead, but it didn't work.  But then I went back to my original code,
>     moved a single parenthesis and... it worked... mostly.  Here's the code:
> 
>     ------------------------ start ---------------------------
>     load url.el
> 
>     (defun www-edit-web-page (url)
>      "Retrieve web page and load into new buffer for editing.
>     Automatically insert after <body> tag URL, appropriately html-tagged
>     URL."
>      (interactive "sLoad URL: ")
>      (with-temp-buffer (url-retrieve url 'edit-web-page)))
> 
> 
>     (defun edit-web-page (status)
>          "Switch to the buffer returned by `url-retreive'.
>        The buffer should contain the web page sent by the server."
>          (switch-to-buffer (current-buffer))
>        (goto-char 0)
>        (re-search-forward "<body.*>" nil t) ;go to end of <body ...> tag.
>        ;insert URL into page
>        (insert "\n<p>From: <a href=\"" url "\">" url "</a>\n </p>\n\n"))
> 
>     ------------------------ ende ---------------------------
> 
>     This properly fetches the web page and loads it into a new, unsaved
>     buffer (exactly what I want), but the last line in the second defun
>     doesn't execute.  The error messages are telling me that edit-web-page
>     doesn't know the value of "url".  So how do I pass this variable-- with
>     its assignment from www-edit-web-page to edit-web-page?  (I have a
>     guess, but i'm more a C/bash/blah/blah/blah guy, so elisp is a bit
>     mysterious.)
> 
> 
> 
> 
> 
> 
> -- 
> Thanks & Regards
> 
> Denny Zhang
>
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