From: filebat Mark <filebat.mark@gmail.com>
To: gebser@mousecar.com
Cc: GNU Emacs List <help-gnu-emacs@gnu.org>
Subject: Re: Retrieve a web page into buffer and insert some text into it.
Date: Sat, 31 Jul 2010 00:51:30 +0800 [thread overview]
Message-ID: <AANLkTinhFqNUD_Phk5NfBXgL0hPiTSsgeih3LLe-SxBX@mail.gmail.com> (raw)
In-Reply-To: <AANLkTi=_36aLxO4sAMC6Je0H+x_5EBvSBC9nV-==LrAm@mail.gmail.com>
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Does the below solve your problem?
(defun match-web-body()
(interactive)
(setq case-fold-search t);;Make searches case insensitive
(goto-char 0)
(re-search-forward "\\(< *\n* *body\n* +fgcolor=\".*\" *\n*>\\)" nil t 1)
(setq match_str (match-string 1))
(message match_str)
)
On Sat, Jul 31, 2010 at 12:32 AM, filebat Mark <filebat.mark@gmail.com>wrote:
> (setq case-fold-search t), then re-search-forward is case insensitive.
>
> To leverage your effort, can you post your code for the sample of args
> parameter.
>
>
> On Fri, Jul 30, 2010 at 7:23 PM, ken <gebser@mousecar.com> wrote:
>
>> Thanks, Denny. I got the args working right, so it's basically working.
>> So now I'm on to another issue: the re-search-forward function. Again,
>> it's a syntax thing.
>>
>> As the code suggests, I'm looking for the html opening body tag. That
>> text could be as simple as "<body>", but could also be:
>>
>> <
>> BodY
>> fgcolor="hazel"
>> >
>>
>> I thought this would work:
>>
>> (re-search-forward "<\s*[bB][oO][dD][yY]\s.*>" nil t)
>>
>> but apparently "\s" is being treated as a literal and not as
>> representing [whitespace]. Also, it doesn't seem that elisp has a
>> function for doing a case-insensitive RE search.
>>
>>
>>
>> On 07/29/2010 10:37 PM filebat Mark wrote:
>> > Hi Ken
>> >
>> > Yes, the parameter of CBARGS in url-retrieve function is confusing.
>> > I also tried this, but it complains of "wrong number of arguments".
>> >
>> > Let's wait to see whether others have any comment. I will spend some
>> > time, when I'm free.
>> >
>> >
>> > On Fri, Jul 30, 2010 at 4:01 AM, ken <gebser@mousecar.com
>> > <mailto:gebser@mousecar.com>> wrote:
>> >
>> >
>> > 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>
>> > > <mailto: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
>> > >
>> >
>> >
>> >
>> >
>> > --
>> > Thanks & Regards
>> >
>> > Denny Zhang
>> >
>>
>>
>
>
> --
> Thanks & Regards
>
> Denny Zhang
>
>
--
Thanks & Regards
Denny Zhang
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next prev parent reply other threads:[~2010-07-30 16:51 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-28 15:36 Retrieve a web page into buffer and insert some text into it ken
2010-07-28 15:46 ` Lennart Borgman
2010-07-28 23:46 ` ken
2010-07-29 15:22 ` filebat Mark
2010-07-29 20:01 ` ken
[not found] ` <AANLkTi=7Y3=H1CeY_OvKZWwZp4R1JwpJCJQ20OMHTEKu@mail.gmail.com>
2010-07-30 11:23 ` ken
2010-07-30 16:32 ` filebat Mark
2010-07-30 16:51 ` filebat Mark [this message]
2010-07-30 17:00 ` filebat Mark
2010-07-30 17:12 ` Teemu Likonen
2010-07-31 2:05 ` filebat Mark
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