- reorder, indent and normalize a comps file,

     - merge duplicate groups and categories,

     - warn about packages referenced by multiple groups,

     - kill multiple references to the same package within a group,

     Typical usage is:

     $ xsltproc -o output-file comps-cleanup.xsl original-file

     You can use the ‑‑novalid xsltproc switch to kill the warning about

     Fedora not installing the comps DTD anywhere xsltproc can find it.

     However without DTD there is no way to check the files completely.

     © Nicolas Mailhot <nim at fedoraproject dot org> 2006-2008 -->

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:exsl="http://exslt.org/common" version="1.0" extension-element-prefixes="exsl">

  <xsl:strip-space elements="*"/>

  <xsl:output method="xml" indent="yes" encoding="UTF-8" doctype-system="comps.dtd" doctype-public="-//CentOS//DTD Comps info//EN"/>

  <xsl:key name="unique-groups" match="/comps/group" use="id/text()"/>

  <xsl:key name="unique-environments" match="/comps/environment" use="id/text()"/>

  <xsl:key name="unique-categories" match="/comps/category" use="id/text()"/>

  <xsl:key name="packages-by-group" match="/comps/group/packagelist/packagereq" use="../../id/text()"/>

  <xsl:key name="unique-package-entries" match="/comps/group/packagelist/packagereq" use="concat(../../id/text(),'/',text())"/>

  <xsl:key name="unique-packages" match="/comps/group/packagelist/packagereq[generate-id(.) = generate-id(key('unique-package-entries',concat(../../id/text(),'/',text()))[1])]" use="text()"/>

  <xsl:key name="groups-by-category" match="/comps/category/grouplist/groupid" use="../../id/text()"/>

  <xsl:key name="unique-group-entries" match="/comps/category/grouplist/groupid" use="concat(../../id/text(),'/',text())"/>

  <xsl:variable name="lcletters">abcdefghijklmnopqrstuvwxyz</xsl:variable>

  <xsl:variable name="ucletters">ABCDEFGHIJKLMNOPQRSTUVWXYZ</xsl:variable>

  <xsl:variable name="type-sort-order">

    <unknown/>

    <mandatory/>

    <conditional/>

    <default/>

    <optional/>

  </xsl:variable>

  <xsl:variable name="attribute-sort-order">

    <unknown/>

    <arch/>

    <name/>

    <package/>

    <type/>

    <requires/>

    <basearch/>

  </xsl:variable>

  <xsl:template match="*" priority="0">

    <xsl:apply-templates select="." mode="normalize"/>

  </xsl:template>

  <xsl:template match="*" mode="normalize">

    <xsl:apply-templates select="preceding-sibling::node()[normalize-space()][1][self::comment()] "/>

    <xsl:copy>

      <xsl:apply-templates select="@*">

        <xsl:sort select="count(exsl:node-set($attribute-sort-order)/*[name() = name(current())]/preceding-sibling::*)" data-type="number"/>

      </xsl:apply-templates>

      <xsl:apply-templates select="*|text()"/>

    </xsl:copy>

  </xsl:template>

  <xsl:template match="comment()|text()">

    <xsl:apply-templates select="preceding-sibling::node()[normalize-space()][1][self::comment()] "/>

    <xsl:copy/>

  </xsl:template>

  <xsl:template match="@*">

    <xsl:copy/>

  </xsl:template>

  <xsl:template match="comps" priority="1">

    <xsl:apply-templates select="preceding-sibling::node()[normalize-space()][1][self::comment()] "/>

    <xsl:copy>

      <xsl:apply-templates select="group">

        <xsl:sort select="translate(id/text(),$lcletters,$ucletters)"/>

      </xsl:apply-templates>

      <xsl:apply-templates select="category">

        <xsl:sort select="display_order/text()"/>

        <xsl:sort select="translate(id/text(),$lcletters,$ucletters)"/>

      </xsl:apply-templates>

      <xsl:apply-templates select="environment">

        <xsl:sort select="display_order/text()"/>

        <xsl:sort select="translate(id/text(),$lcletters,$ucletters)"/>

      </xsl:apply-templates>

      <xsl:apply-templates select="langpacks"/>

      <xsl:apply-templates select="blacklist"/>

      <xsl:apply-templates select="whiteout"/>

    </xsl:copy>

  </xsl:template>

  <xsl:template match="langpacks" priority="1">

    <xsl:copy>

      <xsl:apply-templates select="match">

       <xsl:sort select="@name"/>

       <xsl:sort select="@install"/>

    </xsl:apply-templates>

   </xsl:copy>

 </xsl:template>

  <xsl:template match="blacklist" priority="1">

    <xsl:copy>

      <xsl:apply-templates select="package">

        <xsl:sort select="@arch"/>

        <xsl:sort select="@name"/>

      </xsl:apply-templates>

    </xsl:copy>

  </xsl:template>

  <xsl:template match="whiteout" priority="1">

    <xsl:copy>

      <xsl:apply-templates select="ignoredep">

        <xsl:sort select="@package"/>

        <xsl:sort select="@requires"/>

      </xsl:apply-templates>

    </xsl:copy>

  </xsl:template>

  <xsl:template match="group[count(key('packages-by-group',id/text()))=0]" priority="2">

    <xsl:message>☹☹☹ Empty group <xsl:value-of select="concat(_name/text(),' (',id/text(),')')"/>!</xsl:message>

    <xsl:apply-templates select="." mode="normalize"/>

  </xsl:template>

  <xsl:template match="group[generate-id(.) != generate-id(key('unique-groups',id/text())[1])]" priority="3">

    <xsl:message> ☹☹ Duplicate group <xsl:value-of select="concat(_name/text(),' (',id/text(),')')"/> will be merged.</xsl:message>

  </xsl:template>

  <xsl:template match="category[count(key('groups-by-category',id/text()))=0]" priority="2">

    <xsl:message>☹☹☹ Empty category <xsl:value-of select="concat(_name/text(),' (',id/text(),')')"/>!</xsl:message>

    <xsl:apply-templates select="." mode="normalize"/>

  </xsl:template>

  <xsl:template match="environment[generate-id(.) != generate-id(key('unique-environments',id/text())[1])]" priority="3">

    <xsl:message> ☹☹ Duplicate environment <xsl:value-of select="concat(_name/text(),' (',id/text(),')')"/> will be merged.</xsl:message>

  </xsl:template>

  <xsl:template match="category[generate-id(.) != generate-id(key('unique-categories',id/text())[1])]" priority="3">

    <xsl:message> ☹☹ Duplicate category <xsl:value-of select="concat(_name/text(),' (',id/text(),')')"/> will be merged.</xsl:message>

  </xsl:template>

  <xsl:template match="packagelist" priority="1">

    <xsl:copy>

      <xsl:apply-templates select="key('packages-by-group',../id/text())">

        <xsl:sort select="count(exsl:node-set($type-sort-order)/*[name() = current()/@type]/preceding-sibling::*)" data-type="number"/>

        <xsl:sort select="translate(text(),$lcletters,$ucletters)"/>

      </xsl:apply-templates>

    </xsl:copy>

  </xsl:template>

  <xsl:template match="category/grouplist" priority="1">

    <xsl:copy>

      <xsl:apply-templates select="key('groups-by-category',../id/text())">

        <xsl:sort select="translate(text(),$lcletters,$ucletters)"/>

      </xsl:apply-templates>

    </xsl:copy>

  </xsl:template>

  <xsl:template match="packagereq[generate-id(.) != generate-id(key('unique-package-entries',concat(../../id/text(),'/',text()))[1])]" priority="2">

    <xsl:message>☹☹☹ Ignoring duplicate reference to <xsl:value-of select="concat(@type,' package ',text())"/> in group <xsl:value-of select="concat(../../_name/text(),' (',../../id/text(),')')"/>.</xsl:message>

    <xsl:message>     ⇒ Only its first reference (<xsl:value-of select="key('unique-package-entries',concat(../../id/text(),'/',text()))[1]/@type"/> package) will be kept.</xsl:message>

  </xsl:template>

  <xsl:template match="category/grouplist/groupid[generate-id(.) != generate-id(key('unique-group-entries',concat(../../id/text(),'/',text()))[1])]" priority="1">

    <xsl:message>  ☹ Ignoring duplicate reference to group <xsl:value-of select="text()"/> in category <xsl:value-of select="concat(../../_name/text(),' (',../../id/text(),')')"/>.</xsl:message>

  </xsl:template>

  <xsl:template match="packagereq[generate-id(.) = generate-id(key('unique-packages',text())[2])]" priority="1">

    <xsl:variable name="dupes" select="key('unique-packages',text())"/>

    <xsl:message>  ☹ Package <xsl:value-of select="text()"/> is referenced in <xsl:value-of select="count($dupes)"/> groups:</xsl:message>

    <xsl:for-each select="$dupes">

      <xsl:sort select="translate(../../id/text(),$lcletters,$ucletters)"/>

      <xsl:message>     ✓ <xsl:value-of select="@type"/> package in group <xsl:value-of select="concat(../../_name/text(),' (',../../id/text(),')')"/></xsl:message>

    </xsl:for-each>

    <xsl:apply-templates select="." mode="normalize"/>

  </xsl:template> -->

</xsl:stylesheet>