Ingo Hohmann <ingo at 2b1.de> wrote:

> Hi All,
>
> I want to learn about working with texts, especially
>
> - parse something like swiki markup and create an attributed text.

Look at HtmlParser class>>example1
This takes a piece of HTML and creates an instance of HTMLDocument.
To see formatted text, execute this statement:

(Workspace new contents: HtmlParser example1 formattedText) openLabel:
'formatted Text'

>    I know about TextStream for attributes, but
>    - how do I create a hyperlink?

Copy this into a workspace and execute it:
 | ts |

  ts := TextStream on: (Text new).
  ts nextPutAll: 'Squeak is a beautiful language. Look at '.
  ts withAttribute: (TextURL new url: 'http\\:www.squeak.org')
     do:
      [ ts nextPutAll: 'http\\:www.squeak.org'].
  ts nextPutAll: ' to learn more about it.'.
(Workspace new contents: ts contents) openLabel: 'Here is your Hyperlink:'

You see that an instance of TextURL is used to store a hyperlink.
TextURL is just a text attribute.

>    - Is there an easier way than TexStream?
HtmlParser creates a HtmlDocument which is essentially a tree.
This approach has some important advantages, but it is even more
complicated than the use of TextStream. I think the use of TextStream
is quite easy.
>
> - How do I parse the text to display it as markup again?
>
> - Is there something like textToHtml and vice versa? (I guess Scamper
>    has it, but I didn't find it)

Surprisingly, Text does not implement protocol to create HTML. (In the
standard image. It is quite possible that there are additions that I am not
aware of.) It is not very difficult to program this.
>
>
> Thanks in advance
>
> Ingo
>
Hope this helps - a bit
Boris