Ejercicio 412

Elabora un documento DTD que permita validar la estructura del siguiente documento XML:

vector.svg

<svg version="1.1" width="500" height="400">
  <rect x="25" y="10" width="200" height="100" fill="orange" stroke="blue" stroke-width="3" />
  <rect x="225" y="25" width="50" height="85" fill="blue" stroke="red" stroke-width="8" />
  <circle cx="70" cy="110" r="25" fill="green" stroke="red"/>
  <circle cx="220" cy="110" r="25" fill="green" stroke="red"/>
  <path fill="pink" d="M 316 9 L 396 9 L 359 46 L 359 94 C 359 94 357 100 384 102
              L 384 103 L 331 103 L 331 102 C 356 100 354 94 354 94
          L 354 46 L 316 9 z " />
  <line stroke="green" stroke-width="8" x1="25" y1="150" x2="400" y2="150" />
  <polyline fill="red" points="20, 250 85, 350 120, 350" />
  <polygon fill="green" points="250,250 297, 284 279,340 220, 340 202, 284" />
  <ellipse fill="blue" cx="400" cy="300" rx="72" ry="50"/>
</svg>

Todos los atributos son obligatorios.

Solución

XML

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE svg SYSTEM "412.dtd">
<svg version="1.1" width="500" height="400">
  <rect x="25" y="10" width="200" height="100" fill="orange" stroke="blue" stroke-width="3" />
  <rect x="225" y="25" width="50" height="85" fill="blue" stroke="red" stroke-width="8" />
  <circle cx="70" cy="110" r="25" fill="green" stroke="red"/>
  <circle cx="220" cy="110" r="25" fill="green" stroke="red"/>
  <path fill="pink" d="M 316 9 L 396 9 L 359 46 L 359 94 C 359 94 357 100 384 102
              L 384 103 L 331 103 L 331 102 C 356 100 354 94 354 94
          L 354 46 L 316 9 z " />
  <line stroke="green" stroke-width="8" x1="25" y1="150" x2="400" y2="150" />
  <polyline fill="red" points="20, 250 85, 350 120, 350" />
  <polygon fill="green" points="250,250 297, 284 279,340 220, 340 202, 284" />
  <ellipse fill="blue" cx="400" cy="300" rx="72" ry="50"/>
</svg>

412.dtd

<!ELEMENT svg (rect+, circle+, path, line, polyline, polygon, ellipse)>
<!ATTLIST svg
          height CDATA #REQUIRED
          version CDATA #REQUIRED
          width CDATA #REQUIRED>
<!ELEMENT rect EMPTY>
<!ATTLIST rect
          fill CDATA #REQUIRED
          height CDATA #REQUIRED
          stroke CDATA #REQUIRED
          stroke-width CDATA #REQUIRED
          width CDATA #REQUIRED
          x CDATA #REQUIRED
          y CDATA #REQUIRED>
<!ELEMENT circle EMPTY>
<!ATTLIST circle
          cx CDATA #REQUIRED
          cy CDATA #REQUIRED
          fill CDATA #REQUIRED
          r CDATA #REQUIRED
          stroke CDATA #REQUIRED>
<!ELEMENT path EMPTY>
<!ATTLIST path
          d CDATA #REQUIRED
          fill CDATA #REQUIRED>
<!ELEMENT line EMPTY>
<!ATTLIST line
          stroke CDATA #REQUIRED
          stroke-width CDATA #REQUIRED
          x1 CDATA #REQUIRED
          x2 CDATA #REQUIRED
          y1 CDATA #REQUIRED
          y2 CDATA #REQUIRED>
<!ELEMENT polyline EMPTY>
<!ATTLIST polyline
          fill CDATA #REQUIRED
          points CDATA #REQUIRED>
<!ELEMENT polygon EMPTY>
<!ATTLIST polygon
          fill CDATA #REQUIRED
          points CDATA #REQUIRED>
<!ELEMENT ellipse EMPTY>
<!ATTLIST ellipse
          cx CDATA #REQUIRED
          cy CDATA #REQUIRED
          fill CDATA #REQUIRED
          rx CDATA #REQUIRED
          ry CDATA #REQUIRED>