XML 转换元素出现在文档中的错误位置

Question

我在使用 XML 转换时遇到了一些问题，需要一些帮助。

样式表应该遍历所有后缀元素，并将不带后缀标签的内容放在其第一个祖先引用块元素中的最后一个文本节点旁边（请参阅所需的输出）。它在只有一个后缀存在时有效，但在存在 2 时无效，当存在 2 时，它将两个后缀彼此相邻放置在第一个引号块的最后一个文本节点中。

有什么想法吗？我曾尝试在各个地方将选择限制为祖先::quote-block[1]，但这并没有达到预期的效果。

源 XML

<paragraph>
    <para>
        <quote-block>
            <list prefix-rules="specified">
                <item prefix="“B42">
                    <para id="0a84d149-91b7-4012-ac6d-9f4eb8ed6c37">In June 2000, EME and EWS
                        reached an agreement to negotiate towards a direct contract for coal haulage
                        by rail (on a DIY basis), which would replace the previous indirect E2E
                        arrangements that EME had in place with ECSL. An internal EWS e-mail noted: <quote-block>
                            <quote-para>‘We did the deal with Edison Mission yesterday morning for
                                LBT-Fiddlers @ £[…]/tonne as agreed. This rate until 16th September
                                pending a contract.</quote-para>
                            <quote-para><emphasis strength="strong">Enron are now off our hands so
                                    far as Edison are concerned. The Enron flows we have left are to
                                    British Energy’s station at Eggborough; from Immingham, Redcar
                                    and Hull</emphasis>. Also to Enron’s own power station at Wilton
                                – 250,000 tonnes/year. I think we are stuck Enron [sic] on the
                                Eggborough traffic until next April when British Energy will,
                                hopefully take over their own coal procurement. <emphasis
                                    strength="strong">But we have got them out of Fiddlers Ferry and
                                    Ferrybridge – a big step forward</emphasis>.’</quote-para>
                            <suffix>(Emphasis added.)</suffix>
                        </quote-block>
                    </para>
                </item>
                <item prefix="B43">
                    <para id="d64a5a72-0a02-476f-9a7b-7c07bbc93a8a">This e-mail is evidence of both
                        EWS’s intent and, indeed, its success in stopping ECSL from carrying out
                        indirect supplies to EME, one of the new generating companies.”</para>
                </item>
            </list>
            <suffix>(emphasis in original)</suffix>
        </quote-block>
    </para>
</paragraph>

样式表

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns="http://xml.sm.com/schema/cases/report"
    xmlns:sm="http://xml.sm.com/functions" xmlns:saxon="http://saxon.sf.net/"
    xpath-default-namespace="http://sm.com/schema/cases/report"
    exclude-result-prefixes="xs sm" version="2.0">

    <xsl:output method="xml" indent="no"/>

    <xsl:template match="/">
        <xsl:apply-templates/>
    </xsl:template>

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

    <!-- Match quote-blocks with open or close attributes. -->
    <xsl:template match="*[*:quote-block and descendant::*:suffix]">
        <xsl:call-template name="process-quote-block"/>
    </xsl:template>

    <!-- Match inline quote with open or close attributes -->
    <xsl:template match="*[*:quote and descendant::*:suffix]">
        <xsl:call-template name="process-quote-block"/>
    </xsl:template>

    <!-- Process the quote block -->
    <xsl:template name="process-quote-block">
        <xsl:variable name="quoteBlockCopy">
            <xsl:copy-of select="."/>
        </xsl:variable>

        <xsl:apply-templates select="$quoteBlockCopy" mode="append-suffix">
            <xsl:with-param name="suffix" select="sm:get-suffix-note(.)"/>
            <xsl:with-param name="end-node" select="sm:get-last-text-node($quoteBlockCopy)"/>
        </xsl:apply-templates>
    </xsl:template>

    <!-- Match quote-blocks with open or close attributes. -->
    <xsl:template match="*[*:quote-block and descendant::*:suffix][ancestor::*:quote-block[1]]" mode="create-copy">
        <xsl:call-template name="process-quote-block"/>
    </xsl:template>

    <!-- Match inline quote with open or close attributes -->
    <xsl:template match="*[*:quote and descendant::*:suffix]" mode="create-copy">
        <xsl:call-template name="process-quote-block"/>
    </xsl:template>

    <!-- This will match all elements. Just copy and pass through the parameters. -->
    <xsl:template match="*" mode="append-suffix">
        <xsl:param name="suffix"/>
        <xsl:param name="end-node"/>
        <xsl:copy>
            <xsl:copy-of select="@*"/>
            <xsl:apply-templates mode="append-suffix">
                <xsl:with-param name="suffix" select="$suffix"/>
                <xsl:with-param name="end-node" select="$end-node"/>
            </xsl:apply-templates>
        </xsl:copy>
    </xsl:template>

    <!-- Apply the text node to the content. If the node is equal to the last node then append the descendants of suffix  -->
    <xsl:template match="text()[normalize-space() != '']" mode="append-suffix">
        <xsl:param name="suffix"/>
        <xsl:param name="end-node"/>
        <xsl:choose>
            <xsl:when test="count(. | $end-node) = 1">
                <xsl:value-of select="."/>
                <xsl:apply-templates select="$suffix"/>
            </xsl:when>
            <xsl:otherwise>
                <!-- Or maybe neither. -->
                <xsl:value-of select="."/>
            </xsl:otherwise>
        </xsl:choose>
    </xsl:template>

    <!--  Dont copy suffix as -->
    <xsl:template match="*:suffix" mode="append-suffix"/>

    <xsl:function name="sm:get-suffix-note">
        <xsl:param name="node"/>
        <xsl:sequence select="$node/descendant::*:suffix/node()"/>
    </xsl:function>

    <xsl:function name="sm:get-last-text-node">
        <!--  Finds last non-empty text() node, ignoring <suffix> elements that are a child of this specific quote-block. -->
        <xsl:param name="node"/>

        <xsl:sequence
            select="reverse($node//text()[not(ancestor::*:suffix) and normalize-space() != ''])[1]"/>
    </xsl:function>

</xsl:stylesheet>

当前输出 XML

<paragraph>
    <para>
        <quote-block>
            <list prefix-rules="specified">
                <item prefix="“B42">
                    <para id="0a84d149-91b7-4012-ac6d-9f4eb8ed6c37">In June 2000, EME and EWS
                        reached an agreement to negotiate towards a direct contract for coal haulage
                        by rail (on a DIY basis), which would replace the previous indirect E2E
                        arrangements that EME had in place with ECSL. An internal EWS e-mail noted: <quote-block>
                            <quote-para>‘We did the deal with Edison Mission yesterday morning for
                                LBT-Fiddlers @ £[…]/tonne as agreed. This rate until 16th September
                                pending a contract.</quote-para>
                            <quote-para><emphasis strength="strong">Enron are now off our hands so
                                    far as Edison are concerned. The Enron flows we have left are to
                                    British Energy’s station at Eggborough; from Immingham, Redcar
                                    and Hull</emphasis>. Also to Enron’s own power station at Wilton
                                – 250,000 tonnes/year. I think we are stuck Enron [sic] on the
                                Eggborough traffic until next April when British Energy will,
                                hopefully take over their own coal procurement. <emphasis
                                    strength="strong">But we have got them out of Fiddlers Ferry and
                                    Ferrybridge – a big step forward</emphasis>.’</quote-para>
                        </quote-block>
                    </para>
                </item>
                <item prefix="B43">
                    <para id="d64a5a72-0a02-476f-9a7b-7c07bbc93a8a">This e-mail is evidence of both
                        EWS’s intent and, indeed, its success in stopping ECSL from carrying out
                        indirect supplies to EME, one of the new generating companies.”(Emphasis
                        added.)(emphasis in original)</para>
                </item>
            </list>

        </quote-block>
    </para>
</paragraph>

期望的输出

<paragraph>
    <para>
        <quote-block>
            <list prefix-rules="specified">
                <item prefix="“B42">
                    <para id="0a84d149-91b7-4012-ac6d-9f4eb8ed6c37">In June 2000, EME and EWS
                        reached an agreement to negotiate towards a direct contract for coal haulage
                        by rail (on a DIY basis), which would replace the previous indirect E2E
                        arrangements that EME had in place with ECSL. An internal EWS e-mail noted: <quote-block>
                            <quote-para>‘We did the deal with Edison Mission yesterday morning for
                                LBT-Fiddlers @ £[…]/tonne as agreed. This rate until 16th September
                                pending a contract.</quote-para>
                            <quote-para><emphasis strength="strong">Enron are now off our hands so
                                    far as Edison are concerned. The Enron flows we have left are to
                                    British Energy’s station at Eggborough; from Immingham, Redcar
                                    and Hull</emphasis>. Also to Enron’s own power station at Wilton
                                – 250,000 tonnes/year. I think we are stuck Enron [sic] on the
                                Eggborough traffic until next April when British Energy will,
                                hopefully take over their own coal procurement. <emphasis
                                    strength="strong">But we have got them out of Fiddlers Ferry and
                                    Ferrybridge – a big step forward</emphasis>.’(Emphasis
                                added.)</quote-para>
                        </quote-block>
                    </para>
                </item>
                <item prefix="B43">
                    <para id="d64a5a72-0a02-476f-9a7b-7c07bbc93a8a">This e-mail is evidence of both
                        EWS’s intent and, indeed, its success in stopping ECSL from carrying out
                        indirect supplies to EME, one of the new generating companies.”(emphasis in original)</para>
                </item>
            </list>

        </quote-block>
    </para>
</paragraph>

Answer 1

这是一个解决问题的简单转换。正如其他人所注意到的那样，这个问题以一种非常混乱的方式被指定，并且不允许单一、明确的解释。

<xsl:stylesheet version="1.0"
 xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

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

 <xsl:key name="kLastNonSufText"
   match="*[not(self::suffix)]/text()"
   use="generate-id(ancestor::quote-block[1])"/>

 <xsl:template match="node()|@*">
  <xsl:copy>
   <xsl:apply-templates select="node()|@*"/>
  </xsl:copy>
 </xsl:template>

 <xsl:template match="text()[ancestor::quote-block]">
  <xsl:copy-of select="."/>

  <xsl:variable name="vQBImmed" select="ancestor::quote-block[1]"/>

  <xsl:variable name="vLastText" select=
   "key('kLastNonSufText', generate-id($vQBImmed))
      [last()]"/>

  <xsl:if test="count(.|$vLastText) = 1">
      <xsl:copy-of select="($vQBImmed//suffix)[last()]/text()"/>
  </xsl:if>
 </xsl:template>

 <xsl:template match="suffix"/>
</xsl:stylesheet>

当此转换应用于（非常不可读且格式不佳）提供的源 XML 文档时：

<paragraph>
 <para>
  <quote-block>
    <list prefix-rules="specified">
        <item prefix="“B42">
            <para id="0a84d149-91b7-4012-ac6d-9f4eb8ed6c37">In June 2000, EME and EWS
                reached an agreement to negotiate towards a direct contract for coal haulage
                by rail (on a DIY basis), which would replace the previous indirect E2E
                arrangements that EME had in place with ECSL. An internal EWS e-mail noted:
                <quote-block>
                    <quote-para>‘We did the deal with Edison Mission yesterday morning for
                        LBT-Fiddlers @ £[…]/tonne as agreed. This rate until 16th September
                        pending a contract.</quote-para>
                    <quote-para>
                        <emphasis strength="strong">Enron are now off our hands so
                            far as Edison are concerned. The Enron flows we have left are to
                            British Energy’s station at Eggborough; from Immingham, Redcar
                            and Hull</emphasis>. Also to Enron’s own power station at Wilton
                        – 250,000 tonnes/year. I think we are stuck Enron [sic] on the
                        Eggborough traffic until next April when British Energy will,
                        hopefully take over their own coal procurement.
                        <emphasis
                            strength="strong">But we have got them out of Fiddlers Ferry and
                            Ferrybridge – a big step forward</emphasis>.’
                    </quote-para>
                    <suffix>(Emphasis added.)</suffix>
                </quote-block>
            </para>
        </item>
        <item prefix="B43">
            <para id="d64a5a72-0a02-476f-9a7b-7c07bbc93a8a">This e-mail is evidence of both
                EWS’s intent and, indeed, its success in stopping ECSL from carrying out
                indirect supplies to EME, one of the new generating companies.”</para>
        </item>
    </list>
    <suffix>(emphasis in original)</suffix>
  </quote-block>
 </para>
</paragraph>

输出具有附加到所需文本节点的所需后缀：

<?xml version="1.0" encoding="UTF-16"?><paragraph><para><quote-block><list prefix-rules="specified"><item prefix="“B42"><para id="0a84d149-91b7-4012-ac6d-9f4eb8ed6c37">In June 2000, EME and EWS
                reached an agreement to negotiate towards a direct contract for coal haulage
                by rail (on a DIY basis), which would replace the previous indirect E2E
                arrangements that EME had in place with ECSL. An internal EWS e-mail noted:
                <quote-block><quote-para>‘We did the deal with Edison Mission yesterday morning for
                        LBT-Fiddlers @ £[…]/tonne as agreed. This rate until 16th September
                        pending a contract.</quote-para><quote-para><emphasis strength="strong">Enron are now off our hands so
                            far as Edison are concerned. The Enron flows we have left are to
                            British Energy’s station at Eggborough; from Immingham, Redcar
                            and Hull</emphasis>. Also to Enron’s own power station at Wilton
                        – 250,000 tonnes/year. I think we are stuck Enron [sic] on the
                        Eggborough traffic until next April when British Energy will,
                        hopefully take over their own coal procurement.
                        <emphasis strength="strong">But we have got them out of Fiddlers Ferry and
                            Ferrybridge – a big step forward</emphasis>.’
                    (Emphasis added.)</quote-para></quote-block></para></item><item prefix="B43"><para id="d64a5a72-0a02-476f-9a7b-7c07bbc93a8a">This e-mail is evidence of both
                EWS’s intent and, indeed, its success in stopping ECSL from carrying out
                indirect supplies to EME, one of the new generating companies.”(emphasis in original)</para></item></list></quote-block></para></paragraph>

Answer 2

伙计，你在这里给自己挖了一个大坑。 ;-) 这是我想出的：

<xsl:stylesheet 
  version="1.0"
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
>
  <xsl:output method="xml" encoding="utf-8" indent="no"/>

  <!-- key to identify all non-empty, non-suffix text node descendants of
       a quote-block. We'll use that to pull out the "last one" later-on -->
  <xsl:key 
    name ="kQbText" 
    match="quote-block//text()[not(normalize-space() = '' or parent::suffix)]"
    use  ="generate-id(ancestor::quote-block[1])"
  />

  <!-- identity template to copy everything that is not otherwise handled -->
  <xsl:template match="node()|@*">
    <xsl:copy>
      <xsl:apply-templates select="node()|@*" />
    </xsl:copy>
  </xsl:template>

  <!-- special handling for text nodes that are descendants of quote-blocks -->
  <xsl:template match="quote-block//text()[not(normalize-space() = '' or parent::suffix)]">
    <xsl:variable name="qb" select="ancestor::quote-block[1]" />

    <!-- the text node gets copied regardless -->
    <xsl:copy-of select="." />

    <!-- if it is the last non-empty text node, append all suffices -->
    <xsl:if test="
      generate-id() 
      = 
      generate-id( key('kQbText', generate-id($qb))[last()] )
    ">
      <xsl:for-each select="$qb/suffix">
        <xsl:value-of select="concat(' ', .)" />
      </xsl:for-each>
    </xsl:if>
  </xsl:template>

  <!-- empty text nodes will be removed (all others are copied) -->
  <xsl:template match="text()[normalize-space() = '']" />

  <!-- suffix nodes will be deleted-->
  <xsl:template match="suffix" />

</xsl:stylesheet>

以上结果（缩进和换行添加了 tidy 以使其可读）：

<paragraph>
  <para>
    <quote-block>
      <list prefix-rules="specified">
        <item prefix="“B42">
          <para id="0a84d149-91b7-4012-ac6d-9f4eb8ed6c37">In June
          2000, EME and EWS reached an agreement to negotiate
          towards a direct contract for coal haulage by rail (on a
          DIY basis), which would replace the previous indirect E2E
          arrangements that EME had in place with ECSL. An internal
          EWS e-mail noted: 
          <quote-block>
            <quote-para>‘We did the deal with Edison Mission
            yesterday morning for LBT-Fiddlers @ £[…]/tonne as
            agreed. This rate until 16th September pending a
            contract.</quote-para>
            <quote-para>
            <emphasis strength="strong">Enron are now off our hands
            so far as Edison are concerned. The Enron flows we have
            left are to British Energy’s station at Eggborough;
            from Immingham, Redcar and Hull</emphasis>. Also to
            Enron’s own power station at Wilton – 250,000
            tonnes/year. I think we are stuck Enron [sic] on the
            Eggborough traffic until next April when British Energy
            will, hopefully take over their own coal procurement. 
            <emphasis strength="strong">But we have got them out of
            Fiddlers Ferry and Ferrybridge – a big step
            forward</emphasis>.’ (Emphasis added.)</quote-para>
          </quote-block></para>
        </item>
        <item prefix="B43">
          <para id="d64a5a72-0a02-476f-9a7b-7c07bbc93a8a">This
          e-mail is evidence of both EWS’s intent and, indeed, its
          success in stopping ECSL from carrying out indirect
          supplies to EME, one of the new generating companies.”
          (emphasis in original)</para>
        </item>
      </list>
    </quote-block>
  </para>
</paragraph>

这里的 XSLT 代码是 XSLT 1.0，但您可以在 2.0 处理器中原样运行它。