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How to present the following data in XML?

How to present the following data in XML format?

commandA                 ( a | b | c )

position = pos [(m | n | o )]

[space = space] [(m|n|o)]      

[option1]

[option2 = "Hello"]

[option3]

Note: [] → indicates optional parameter

() → indicates mandatory

| → stands for any value

For instance:

 commandA a position = 1.0<m> space = 2.0<n> option1  option2="Hello"

How to efficiently represent this data in xml?

I tried something like this,

<command name="commandA" position = "position" >
     <option name="option1"/>  
     <option name="option2" value = "Hello"/>
     <option name="option3"/>
</command>

But how to handle the value of the ie command a|b|cand the position of ie m|n|o?

EDIT: Command: Syntax:

commandA (a | b | c) pos = 0 [w | x | y | z] [spa = 0.0 [w | x | y | z]] [str = "Hello"]

commandA a pos = 0w spa = 0.0z str = "Hello"

I tried something like this,

   <command name="commandA">
 <direction>
    <direction name="a"/>
    <direction name="b">
    <direction name="c"/>
 </direction>
 <parameter>
    <position value="pos=0" />
    <spacing value="spa=0.0" />
    <options>
        <option name="w"/>
        <option name="x"/>
        <option name="y"/>
        <option name="z"/>
    </options>
 </parameter>
 <string value="str=" />
 </command>

Any suggestions on this?

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2 answers

How about something like that. It combines tags to guide autocomplete, as well as tags for the DOM command:

<ac:autocomlete>
  <command>   
    <command-name>commandA</command-name>
    <separator> </separator>
    <ac:choice>
      <command-type>a</command-type>
      <command-type>b</command-type>
      <command-type>c</command-type>
    </ac:choice>
    <separator> </separator>
    <pos>
       <pos-text>pos=</pos-text>
       <pos-value><ac:match regex="\d+"/></pos-value>
       <ac:optional>
          <ac:choice>
             <pos-unit>w</pos-unit>
             <pos-unit>x</pos-unit>
             <pos-unit>y</pos-unit>
             <pos-unit>z</pos-unit>
          </ac:choice>
       </ac:optional>
    </pos>
    <ac:optional>
       <spa-separator> </spa-separator>
       <spa>
          <spa-text>spa=</spa-text>
          <spa-value><ac:match regex="\d+\.\d+"/></spa-value>
          <ac:optional>
            <ac:choice>
               <spa-unit>w</spa-unit>
               <spa-unit>x</spa-unit>
               <spa-unit>y</spa-unit>
               <spa-unit>z</spa-unit>
            </ac:choice>
          </ac:optional>
       </spa>
    </ac:optional>
    <ac:optional>
       <arg-separator> </arg-separator>
       <arg-name>str=</arg-name>
       <arg-value><ac:match regex='"[^"]*"'/></arg-value>
    </ac:optional>
  </command>
</autocomlete>

, choice optional, . , , , DOM, , .

match / . DOM , .

. , DOM , : , , , , DOM , .

+4
<command value="a">
   <position type="m">1.0</position>
   <space type="m">2.0</space>
   <option1 />
   <option2>Hello</option2>
   <option3 />
</command>

, ? DTD?

+3

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