Re: xsl:analyze-string

Problem:

I have xml looking like
   <record>19/08/1992  09:08            111938 500014.08b</record>

Of interest is the last field, the dos file name.
Its general form is
nnnnnn.nnA   n=int, A =A-Z.

I can use the analyze-string to parse this (mostly),
I'm missing a processing model to take care of exceptions.

E.g. xxx.01a is a particular (valid form).
On occasions someone has misnamed the file xxx.ola  using o instead
of 0 letter l instead of 1.

I'm missing the nest of cases: My code is shown below.
What's the logic to posively select all the known/valid combinations
are exhausted?
I want to add some form of error markup to identify these rogues.

Valid options include, for regex-group(5)

nnb
nnm
nnl
nnf
lab

TIA, regards DaveP

<xsl:template match="record">
  <xsl:analyze-string  select="." flags="i" regex=
"([0-9]+/[0-9]+/[0-9]+) +([0-9]+:[0-9]+) +([0-9]+) +([0-9]+)\.([0-9a-z]+)" >
    <xsl:matching-substring>
      <file>
        <nm><xsl:value-of select="regex-group(4)"/></nm>
        <ext><xsl:value-of select="regex-group(5)"/></ext>
        <xsl:analyze-string select="regex-group(5)" flags="i" regex=
"([0-9]{{1,2}})([a-z])">
          <xsl:matching-substring>
            <vol><xsl:value-of select="regex-group(1)"/></vol>
            <type>
              <xsl:choose>
                <xsl:when test="regex-group(2) = 'b' or regex-group(2) =
'B'">
                  <xsl:text>braille</xsl:text>
                </xsl:when>
                <xsl:when test="regex-group(2) = 'm' or regex-group(2) =
'M'">
                  <xsl:text>Moon</xsl:text>
                </xsl:when>
                <xsl:when test="regex-group(2) = 'l' or regex-group(2) =
'L'">
                  <xsl:text>ATOD</xsl:text>
                </xsl:when>
               <xsl:when test="regex-group(2) = 'f' or regex-group(2) =
'F'">
                  <xsl:text>DiskFile</xsl:text>
                </xsl:when>
                <xsl:otherwise>
                  <xsl:value-of select="."/>
                </xsl:otherwise>
              </xsl:choose>
            </type>
          </xsl:matching-substring>
        </xsl:analyze-string>

          <xsl:if test="regex-group(5)='lab'">
            <type>label</type>
          </xsl:if>
    </file>
    </xsl:matching-substring>
  </xsl:analyze-string>
</xsl:template>

Regards DaveP.

**** snip here *****