Remove element from a XML file

ROCXY · September 5th, 2011, 10:56 AM

Hi All,

I am trying to do few addition and correction to MathML elements.

Input:
<math xmlns="http://www.w3.org/1998/Math/MathML">
<semantics>
<mi>P</mi>
<mspace width="0"/>
<mo>=</mo>
<annotation encoding="MathMagic">MMF....... more data</annotation>
</semantics>
</math>

Required output

<math xmlns="http://www.w3.org/1998/Math/MathML">
<semantics>
<mi>P</mi>
<mo>=</mo>
</semantics>
</math>

XSL USED:
<xsl:template match="*">
<xsl:copy>
<xsl:copy-of select="@*"></xsl:copy-of>
<xsl:apply-templates></xsl:apply-templates>
</xsl:copy>
</xsl:template>

<xsl:template match="//mspace">
<xsl:template match="//annotation"/>

1) All the above describe the removal of an element - 2) following detail describes the request of additions of attributes

input
<mo>=</mo>
<mi>=</mi>
<mtext>=</mtext>

Required output
<mo font="XYZ" fontsize="10.2">=</mo>

Any help would be great full.

Martin Honnen · September 5th, 2011, 12:16 PM

In match pattern you don't need to use "//" at the start of a pattern so doing

Code:

<xsl:template match="mspace"/>
<xsl:template match="annotation"/>

suffices. However both your match or my simplification will only work if you use XSLT 2.0 and put xpath-default-namespace="http://www.w3.org/1998/Math/MathML" on the xsl: stylesheet element.

As for adding attributes, use e.g.

Code:

<xsl:template match="mo">
  <xsl:copy>
    <xsl:attribute name="font">XYZ</xsl:attribute>
    <xsl:attribute name="fontsize">10.2</xsl:atttribute>
    <xsl:apply-templates select="@* | node()"/>
  </xsl:copy>
</xsl:template>

ROCXY · September 6th, 2011, 01:22 AM

Hi Martin

Thanks you so much.

Code:

    <xsl:template match="*">
        <xsl:copy>
            <xsl:copy-of select="@*"></xsl:copy-of>
            <xsl:apply-templates></xsl:apply-templates>
        </xsl:copy>
    </xsl:template>
    <xsl:template match="mspace"/>
    <xsl:template match="annotation"/>
    
    <xsl:template match="mo">
        <xsl:copy>
            <xsl:attribute name="font">XYZ</xsl:attribute>
            <xsl:attribute name="fontsize">10.2</xsl:attribute>
            <xsl:apply-templates select="@* | node()"/>
        </xsl:copy>
    </xsl:template>