Extracting Header and Content from an Article

Extracting Header and Content from an Article

[Husain Alshehhi]

Hello,

When the point is in the summary page while viewing an article, or while a point is in an open article, I want to be able to (1) extract a header value which is not in the gnus-extra-headers, and (2) get some content from the article via regexp search (using capture groups). What are the right GNUS APIs to use for my use case?

Husain

Re: Extracting Header and Content from an Article

[Tim Landscheidt]

"Husain Alshehhi" <husain@alshehhi.io> wrote:

>> I do not know if it is the right way, but I use patterns of
>> the type:

>> | (gnus-with-article-buffer
>> |   (gnus-fetch-original-field "User-Agent"))

>> Similarly, I use gnus-with-article-buffer and
>> save-mark-and-excursion to "enter" the article buffer, then
>> article-goto-body to go to the article body's top, and then
>> search-forward-regexp to capture text.

> Thank you. Extracting the field worked well.

> For the body, however, I noticed that I need a little more: what I want
> to search in is the the whole email, not just the article buffer. In
> particular, I want to be able to search the text/plain as well as the
> text/html parts. gnus-with-article-buffer and article-goto-body, on the
> other hand, only allow me to search within the buffer, which has only
> the visible part of the email (text/html in my case).

I have one use case where I need to search (or rather copy
parts of) the raw article text, and I use
gnus-summary-show-raw-article for that as Gijs suggested.

For another use case, more similar to yours, I want to pro-
perly iterate over attachments, etc.  I haven't done any ac-
tual work in that direction, but noted that it would proba-
bly involve iterating over (gnus-article-mime-handles).  If
someone has a working example, any pointer would be much
appreciated.

Tim

Re: Extracting Header and Content from an Article

[Gijs Hillenius]

On 18 November 2024 21:53 Husain Alshehhi, wrote:

> Tim Landscheidt <tim@tim-landscheidt.de> writes:
>
>> I do not know if it is the right way, but I use patterns of
>> the type:
>>
>> | (gnus-with-article-buffer
>> |   (gnus-fetch-original-field "User-Agent"))
>>
>> Similarly, I use gnus-with-article-buffer and
>> save-mark-and-excursion to "enter" the article buffer, then
>> article-goto-body to go to the article body's top, and then
>> search-forward-regexp to capture text.
>
> Thank you. Extracting the field worked well.
>
> For the body, however, I noticed that I need a little more: what I want
> to search in is the the whole email, not just the article buffer. In
> particular, I want to be able to search the text/plain as well as the
> text/html parts. gnus-with-article-buffer and article-goto-body, on the
> other hand, only allow me to search within the buffer, which has only
> the visible part of the email (text/html in my case).
>


gnus-summary-show-raw-article  ?

Re: Extracting Header and Content from an Article

[Husain Alshehhi]

Tim Landscheidt <tim@tim-landscheidt.de> writes:

> I do not know if it is the right way, but I use patterns of
> the type:
>
> | (gnus-with-article-buffer
> |   (gnus-fetch-original-field "User-Agent"))
>
> Similarly, I use gnus-with-article-buffer and
> save-mark-and-excursion to "enter" the article buffer, then
> article-goto-body to go to the article body's top, and then
> search-forward-regexp to capture text.

Thank you. Extracting the field worked well.

For the body, however, I noticed that I need a little more: what I want
to search in is the the whole email, not just the article buffer. In
particular, I want to be able to search the text/plain as well as the
text/html parts. gnus-with-article-buffer and article-goto-body, on the
other hand, only allow me to search within the buffer, which has only
the visible part of the email (text/html in my case).

Re: Extracting Header and Content from an Article

[Tim Landscheidt]

"Husain Alshehhi" <husain@alshehhi.io> wrote:

> When the point is in the summary page while viewing an
> article, or while a point is in an open article, I want to
> be able to (1) extract a header value which is not in the
> gnus-extra-headers, and (2) get some content from the
> article via regexp search (using capture groups). What are
> the right GNUS APIs to use for my use case?

I do not know if it is the right way, but I use patterns of
the type:

| (gnus-with-article-buffer
|   (gnus-fetch-original-field "User-Agent"))

Similarly, I use gnus-with-article-buffer and
save-mark-and-excursion to "enter" the article buffer, then
article-goto-body to go to the article body's top, and then
search-forward-regexp to capture text.

Tim