[mapserver-users] Mapfile dtd proposal

[Hugues Parvillers]

For me, it would be very much better to user xsd rather than dtd.

H/P
France

Ricky Jo a écrit :

> Hi,
> As I have to deal with big mapfiles on my server, I
> wanted to push forward the migration to xml, which
> will  simplify things, I think.
>
> Here's my proposal joined, with a quite not complete
> example. I inspired myself from some posts before.
> A few points of discussion:
> first, the order of elements is important in dtd, so
> if someone find a better ordering, it would be good. I
> simply copied from the doc and mapfile.c.
> Then, I did not pay attention on the requirement of
> the  elements: they are mostly all optional. It is
> still needed to specify which elements are required
> (change XX? to XX).
> Finally, there is the question of attributes vs
> elements. So if some of you have good arguments, let's
> send your changes.
>
> The dtd has some drawbacks, such as the unability to
> constraints the element content. That's why you'll see
> some lines likes this.
> <units type="meter"/> instead of <units>meter</units>.
>
> Cheers,
>
> Ricky
>
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>
>   ------------------------------------------------------------------------
>                      Name: mapfile.dtd
>    mapfile.dtd       Type: XMLSpy Fichier (text/xml)
>                  Encoding: base64
>               Description: mapfile.dtd
>
>   ------------------------------------------------------------------------
> <?xml version="1.0" ?>
> <!DOCTYPE map SYSTEM "mapfile.dtd" >
>
> <map status="on" name="demo">
>
>   <size x="600" y="600"/>
>
>   <extent
>                   minx="388107.634400379"
>                   miny="5203120.88405952"
>                   maxx="500896.339019834"
>                   maxy="5310243.30613897" />
>   <imagetype type="png"/>
>   <interlace status="on"/>
>
>   <symbol name="triangle" type="vector">
>         <points>
>           <point x="10" y="20" />
>           <point x="15" y="25" />
>         </points>
>   </symbol>
>
>   <units type="meters"/>
>
>   <web>
>         <header>demo_header.html</header>
>         <imagepath>"/var/www/img"</imagepath>
>         <imageurl>"http://demo/img/"</imageurl>
>         <minscale>1000</minscale>
>         <maxscale>1550000</maxscale>
>         <template>demo.html</template>
>   </web>
>
>   <reference status="on">
>         <image>graphics/reference_base.gif</image>
>         <extent
>                         minx="388107.634400379"
>                         miny="5203120.88405952"
>                         maxx="500896.339019834"
>                         maxy="5310243.30613897" />
>         <color r="-1" g="-1" b="-1"/>
>         <outlinecolor r="255" g="0" b="0"/>
>   </reference>
>
>   <legend status="on">
>         <keysize x="18" y="12"/>
>         <label type="bitmap">
>           <outlinecolor r="255" g="0" b="0"/>
>           <labelsize type="medium"/>
>         </label>
>   </legend>
>
>   <scalebar status="on">
>         <backgroundcolor r="255" g="0" b="0"/>
>         <color r="255" g="0" b="0"/>
>         <imagecolor r="255" g="0" b="0"/>
>         <intervals>5</intervals>
>         <label>
>           <outlinecolor  r="255" g="0" b="0"/>
>           <labelsize type="medium"/>
>         </label>
>         <outlinecolor r="255" g="0" b="0"/>
>         <size x="350" y="5"/>
>         <units type="miles" />
>   </scalebar>
>
>   <layer name="lakes" type="polygon" status="on">
>         <classitem>usclass</classitem>
>         <data>lakes.tif</data>
>         <tolerance>3</tolerance>
>         <toleranceunits type="miles"/>
>
>         <class name="water">
>           <backgroundcolor r="255" g="0" b="0"/>
>           <color r="255" g="0" b="0"/>
>           <expression>421</expression>
>           <outlinecolor r="255" g="0" b="0"/>
>         </class>
>
>   </layer>
>
> </map>