[REBOL] Re: XML-Maker Function!
From: mike::yaunish::home::com at: 13-Feb-2001 11:51
There is one small change that needs to be made to this function.
If you do the following the problem becomes obvious.
a: xml-maker [ 'red 1.21.3 ]
== [<red> 1.21.3 </red>]
>> a: xml-maker [ 'red 1.21.3 ]
== [<red> 1.21.3 </red> <red> 1.21.3 </red>]
>> a: xml-maker [ 'red 1.21.3 ]
== [<red> 1.21.3 </red> <red> 1.21.3 </red> <red> 1.21.3 </red>]
The ouput-block initialization should read:
output-block: copy []
>Modified (for proper closing tag) xml-maker function from Mark:
>
>xml-maker: func [ block [block!]] [
> if not even? (length? block) [ make error! "Imbalance Between Tags &
>Values"]
> block: reduce block
> output-block: []
> count: (length? block) / 2
> loop count [
> tag: to-tag pick block 1
> end-tag: to-tag join "/" pick block 1
> block: next block
> value: pick block 1
> block: next block
> append output-block reduce [tag value end-tag]
> ]
> return output-block
>]
>
>--Scott
>
>>
>From: "Deryk Robosson"
> > Mark wrote:
> > >
> > > ANDREW,
> > >
> > > here's a quickly knocked up function to make XML from a block of REBOL
>values.
> > >
> > > Note the value block should contain 'tag 'value 'tag2 'value2 etc etc.
> > >
> > > anyway here's the func.
> > >
> > > xml-maker: func [ block [block!]] [
> > >
> > > if not even? (length? block) [ make error! "Imbalance Between Tags &
>Values"]
> > >
> > > block: reduce block
> > >
> > > output-block: []
> > >
> > > count: (length? block) / 2
> > >
> > > loop count [ tag: to-tag pick block 1 block: next block value: pick
>block 1 block: next block
> > >
> > > append output-block reduce [tag value tag]
> > >
> > > ]
> > >
> > > return output-block
> > >
> > > ]
> > >
> > > >> xml-maker [ 'red 255.0.0 'green 0.255.0 'blue 0.0.255 ]
> > > == [<red> 255.0.0 <red> <green> 0.255.0 <green> <blue> 0.0.255 <blue>]
> > > >> xml-maker [ 'red 255.0.0 'green 0.255.0 'blue ]
> > > ** User Error: Imbalance Between Tags & Values.
> > > ** Where: make error! "Imbalance Between Tags & Values"
> >
> > Where are the closing tags? This would never pass a validation. :)
> >
> > Deryk
> >
>
> > subject, without the quotes.
> >
>
>--
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Mike Yaunish
[mike--yaunish--home--com]
