前兄弟姐妹和后兄弟姐妹不使用其他元素
Preceding-sibling and following-sibling not working with additional element
首先我想为这个问题的长度道歉，但希望提供这些信息会有所帮助。
我正尝试在多个 xml 文档上使用单个 xsl，它适用于我的原始文档（房间中四面墙的文本，每面墙都表示为一个 TEI surfaceGrp 元素）。但是，现在我需要修改xsl来处理一个额外的TEI surfaceGrp元素，代表一个书写页面的两侧，然后是页面的集合。
我原来的xml四面墙代码是这样的：
<TEI>
<sourceDoc>
<surfaceGrp xml:id="wall" n="South Wall">
<surface xml:id="EETS.T.29">
<label>Verse 29</label>
<graphic url="sw_test_1.jpg"/>
<zone>
<line/>
</zone>
</surface>
<surface xml:id="EETS.T.30">
<label>Verse 30</label>
<graphic url="sw_test_2.jpg"/>
<zone>
<line/>
</zone>
</surface>
<surface xml:id="EETS.T.27">
<label>Verse 27</label>
<graphic url="sw_test_3.jpg"/>
<zone>
<line/>
</zone>
</surface>
<surface xml:id="EETS.T.56">
<label>Verse 56</label>
<graphic url="sw_test_4.jpg"/>
<zone>
<line/>
</zone>
</surface>
<surface xml:id="EETS.T.57">
<label>Verse 57</label>
<graphic url="sw_test_5.jpg"/>
<zone>
<line/>
</zone>
</surface>
<surface xml:id="EETS.T.58">
<label>Verse 58</label>
<graphic url="sw_test_6.jpg"/>
<zone>
<line/>
</zone>
</surface>
<surface xml:id="EETS.T.59">
<label>Verse 59</label>
<graphic url="sw_test_7.jpg"/>
<zone>
<line/>
</zone>
</surface>
</surfaceGrp>
<surfaceGrp xml:id="wall" n="West Wall">
<surface xml:id="EETS.T.60">
<label>Verse 60</label>
<graphic url="ww_test_1.jpg"/>
<zone>
<line/>
</zone>
</surface>
<surface xml:id="EETS.T.63">
<label>Verse 63</label>
<graphic url="ww_test_2.jpg"/>
<zone>
<line/>
</zone>
</surface>
</surfaceGrp>
</sourceDoc>
我将其转换为以下 html
<h1 class="menuHeader">
<span class="menuitem" id="image_thumbnail">
<a class="nav_link" href="sw_test_1-thumbnail.html">
<img class="thumbnail" src="../../Testament/Clopton/Thumbnails/sw_test_1-thumbnail.jpg"
alt="Verse 29"/>
</a>
</span>
<span class="menuitem" id="image_thumbnail">
<a class="nav_link" href="sw_test_2-thumbnail.html">
<img class="thumbnail" src="../../Testament/Clopton/Thumbnails/sw_test_2-thumbnail.jpg"
alt="Verse 30"/>
</a>
</span>
<span class="menuitem" id="image_thumbnail">
<a class="nav_link" href="sw_test_3-thumbnail.html">
<img class="thumbnail" src="../../Testament/Clopton/Thumbnails/sw_test_3-thumbnail.jpg"
alt="Verse 27"/>
</a>
</span>
<span class="menuitem" id="image_thumbnail">
<a class="nav_link" href="sw_test_4-thumbnail.html">
<img class="thumbnail" src="../../Testament/Clopton/Thumbnails/sw_test_4-thumbnail.jpg"
alt="Verse 56"/>
</a>
</span>
<span class="menuitem" id="image_thumbnail">
<a class="nav_link" href="sw_test_5-thumbnail.html">
<img class="thumbnail" src="../../Testament/Clopton/Thumbnails/sw_test_5-thumbnail.jpg"
alt="Verse 57"/>
</a>
</span>
<span class="menuitem" id="image_thumbnail">
<a class="nav_link" href="sw_test_6-thumbnail.html">
<img class="thumbnail" src="../../Testament/Clopton/Thumbnails/sw_test_6-thumbnail.jpg"
alt="Verse 58"/>
</a>
</span>
<span class="menuitem" id="image_thumbnail">
<a class="nav_link" href="sw_test_7-thumbnail.html">
<img class="thumbnail" src="../../Testament/Clopton/Thumbnails/sw_test_7-thumbnail.jpg"
alt="Verse 59"/>
</a>
</span>
<span class="menuitem" id="previousItem">
<a class="nav_link" href="sw_test_6.html"> Previous</a>
</span>
<span class="menuitem" id="nextItem">
<a class="nav_link" href="ww_test_1.html">Next</a>
</span>
通过这个 xsl:
<xsl:template name="menuHeader">
<xsl:variable name="filename_length" select="string-length(tei:graphic/@url)"/>
<h1 class="menuHeader">
<span class="menuitem" id="groupLabel">
<xsl:choose>
<xsl:when test="../../../../tei:teiHeader/fileDesc/SourceDesc='Clopton_Chantry_Chapel'">
<xsl:value-of select="../@n"/>
<xsl:text> </xsl:text>
<span id="modelViewer">
<a href="../../Model/three/examples/chantry_chapel.html">
<xsl:text>(View Model)</xsl:text>
</a>
</span>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="concat(../@xml:id,' ',@n)"/>
</xsl:otherwise>
</xsl:choose>
</span>
<xsl:apply-templates select=".././/tei:graphic" mode="list"/>
<xsl:variable name="last_block" as="xs:integer">
<xsl:value-of select="count(../preceding-sibling::tei:surfaceGrp)"/>
</xsl:variable>
<xsl:variable name="next_block" as="xs:integer">
<xsl:value-of select="count(../following-sibling::tei:surfaceGrp)"/>
</xsl:variable>
<xsl:variable name="total_blocks">
<xsl:value-of select="../last()"/>
</xsl:variable>
<xsl:variable name="group_position" as="xs:integer">
<xsl:value-of
select="../../count(tei:surfaceGrp) - count(../following-sibling::node()/position())"
/>
</xsl:variable>
<xsl:variable name="last_item_id">
<xsl:value-of select="../../tei:surfaceGrp[last()]/tei:surface[last()]/@xml:id"/>
</xsl:variable>
<xsl:choose>
<xsl:when test="count(preceding-sibling::tei:surface)+1 > 1">
<span class="menuitem" id="previousItem">
<a class="nav_link">
<xsl:attribute name="href">
<xsl:value-of select="concat(substring(preceding-sibling::*[1]/tei:graphic/@url,1,($filename_length - 4)),'.html')"/>
</xsl:attribute>
Previous</a>
</span>
</xsl:when>
<xsl:when test="count(../preceding-sibling::tei:surfaceGrp)+1 > 1">
<span class="menuitem" id="previousItem">
<a class="nav_link"><xsl:attribute name="href">
<xsl:value-of select="concat(substring(../../tei:surfaceGrp[$last_block]/tei:surface[last()]/tei:graphic/@url,1,($filename_length - 4)),'.html')"/>
</xsl:attribute>Previous</a>
</span>
</xsl:when>
<xsl:otherwise>
<span class="menuitem" id="previousItem">
<a class="nav_link">Previous</a>
</span>
</xsl:otherwise>
</xsl:choose>
<xsl:choose>
<xsl:when test="$last_item_id = @xml:id">
<span class="menuitem" id="nextItem">
<a class="nav_link">Next</a>
</span>
</xsl:when>
<xsl:when test="position() = last()">
<span class="menuitem" id="nextItem">
<a class="nav_link"><xsl:attribute name="href"><xsl:value-of
select="concat(substring(../../tei:surfaceGrp[$group_position+1]/tei:surface[1]/tei:graphic/@url,1,($filename_length - 4)),'.html')"
/></xsl:attribute>Next</a>
</span>
</xsl:when>
<xsl:when test="not(position() = last())">
<span class="menuitem" id="nextItem">
<a class="nav_link"><xsl:attribute name="href"><xsl:value-of
select="concat(substring(following-sibling::*[1]/tei:graphic/@url,1,($filename_length - 4)),'.html')"
/></xsl:attribute>Next</a>
</span>
</xsl:when>
<xsl:otherwise/>
</xsl:choose>
</h1>
</xsl:template>
<xsl:template match="tei:graphic" mode="list">
<span class="menuitem" id="image_thumbnail">
<a class="nav_link">
<xsl:attribute name="href">
<xsl:value-of select="concat(substring(@url,1,string-length(@url)-4),'.html')"/>
</xsl:attribute>
<img class="thumbnail">
<xsl:attribute name="src">
<xsl:value-of
select="concat('../../',$title_folder,'/',$witness,'/',$thumbnail_folder,'/',substring(@url,1,string-length(@url)-4),'-thumbnail.jpg')"
/>
</xsl:attribute>
<xsl:attribute name="alt">
<xsl:value-of select="../tei:label"/>
</xsl:attribute>
</img>
</a>
</span>
</xsl:template>
当我 运行 在新文档上使用额外的 surfaceGrp 元素时，
<TEI>
<sourceDoc>
<surfaceGrp xml:id="g.3" n="gathering">
<surfaceGrp xml:id="f.19" n="folio">
<surface n="verso">
<graphic url="Jesus_Q_G_8_f19v.jpg"/>
<zone n="EETS.QD.I">
<line/>
</zone>
<zone n="EETS.QD.1">
<line/>
</zone>
</surface>
</surfaceGrp>
<surfaceGrp xml:id="f.20" n="folio">
<surface n="recto">
<graphic url="Jesus_Q_G_8_f20r.jpg"/>
<zone n="EETS.QD.1">
<line/>
</zone>
<zone n="EETS.QD.2">
<line/>
</zone>
<zone n="EETS.QD.3">
<line/>
</zone>
<zone n="EETS.QD.4">
<line/>
</zone>
</surface>
<surface n="verso">
<graphic url="Jesus_Q_G_8_f20v.jpg"/>
<zone n="EETS.QD.4">
<line>
<orig>To see my son <hi rend="underline">thus</hi> nailed to <hi
rend="underline">a tre</hi> .</orig>
</line>
</zone>
<zone n="EETS.QD.5">
<line/>
</zone>
<zone n="EETS.QD.6">
<line/>
</zone>
<zone n="EETS.QD.7">
<line/>
</zone>
</surface>
</surfaceGrp>
</surfaceGrp>
</sourceDoc>
我只得到一页的信息。这是有道理的，因为页面与原始代码中的墙一样适合相同的 surfaceGrp 插槽。但是当我尝试修改代码以向上移动到页面集合级别时
<xsl:template name="menuHeader">
<xsl:variable name="filename_length" select="string-length(tei:graphic/@url)"/>
<h1 class="menuHeader">
<span class="menuitem" id="groupLabel">
<xsl:choose>
<xsl:when test="../../../../tei:teiHeader/fileDesc/SourceDesc='Clopton_Chantry_Chapel'">
<xsl:value-of select="../@n"/>
<xsl:text> </xsl:text>
<span id="modelViewer">
<a href="../../Model/three/examples/chantry_chapel.html">
<xsl:text>(View Model)</xsl:text>
</a>
</span>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="concat(../@xml:id,' ',@n)"/>
</xsl:otherwise>
</xsl:choose>
</span>
<xsl:apply-templates select=".././/tei:graphic" mode="list"/>
<xsl:variable name="last_block" as="xs:integer">
<xsl:choose>
<xsl:when test="../../../../tei:teiHeader/fileDesc/SourceDesc='Clopton_Chantry_Chapel'">
<xsl:value-of select="count(../preceding-sibling::tei:surfaceGrp)"/>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="count(../../preceding-sibling::tei:surfaceGrp)"/>
</xsl:otherwise>
</xsl:choose>
</xsl:variable>
<xsl:variable name="next_block" as="xs:integer">
<xsl:choose>
<xsl:when test="../../../../tei:teiHeader/fileDesc/SourceDesc='Clopton_Chantry_Chapel'">
<xsl:value-of select="count(../following-sibling::tei:surfaceGrp)"/>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="count(../../following-sibling::tei:surfaceGrp)"/>
</xsl:otherwise>
</xsl:choose>
</xsl:variable>
<xsl:variable name="total_blocks">
<xsl:value-of select="../last()"/>
</xsl:variable>
<xsl:variable name="group_position" as="xs:integer">
<xsl:choose>
<xsl:when test="../../../../tei:teiHeader/fileDesc/SourceDesc='Clopton_Chantry_Chapel'">
<xsl:value-of
select="../../count(tei:surfaceGrp) - count(../following-sibling::node()/position())"
/>
</xsl:when>
<xsl:otherwise>
<xsl:value-of
select="../../../count(tei:surfaceGrp) - count(../following-sibling::node()/position())"
/>
</xsl:otherwise>
</xsl:choose>
</xsl:variable>
<xsl:variable name="last_item_id">
<xsl:choose>
<xsl:when test="../../../../tei:teiHeader/fileDesc/SourceDesc='Clopton_Chantry_Chapel'">
<xsl:value-of select="../../tei:surfaceGrp[last()]/tei:surface[last()]/@xml:id"/>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="../../../tei:surfaceGrp[last()]/tei:surfaceGrp[last()]/tei:surface[last()]/@xml:id"/>
</xsl:otherwise>
</xsl:choose>
</xsl:variable>
<xsl:choose>
<xsl:when test="count(preceding-sibling::tei:surface)+1 > 1">
<span class="menuitem" id="previousItem">
<a class="nav_link">
<xsl:attribute name="href">
<xsl:value-of select="concat(substring(preceding-sibling::*[1]/tei:graphic/@url,1,($filename_length - 4)),'.html')"/>
</xsl:attribute>
Previous</a>
</span>
</xsl:when>
<xsl:when test="count(../preceding-sibling::tei:surfaceGrp)+1 > 1">
<span class="menuitem" id="previousItem">
<a class="nav_link"><xsl:attribute name="href">
<xsl:value-of select="concat(substring(../../tei:surfaceGrp[$last_block]/tei:surface[last()]/tei:graphic/@url,1,($filename_length - 4)),'.html')"/>
</xsl:attribute>Previous</a>
</span>
</xsl:when>
<xsl:otherwise>
<span class="menuitem" id="previousItem">
<a class="nav_link">Previous</a>
</span>
</xsl:otherwise>
</xsl:choose>
<xsl:choose>
<xsl:when test="$last_item_id = @xml:id">
<span class="menuitem" id="nextItem">
<a class="nav_link">Next</a>
</span>
</xsl:when>
<xsl:when test="position() = last()">
<span class="menuitem" id="nextItem">
<a class="nav_link"><xsl:attribute name="href"><xsl:value-of
select="concat(substring(../../tei:surfaceGrp[$group_position+1]/tei:surface[1]/tei:graphic/@url,1,($filename_length - 4)),'.html')"
/></xsl:attribute>Next</a>
</span>
</xsl:when>
<xsl:when test="not(position() = last())">
<span class="menuitem" id="nextItem">
<a class="nav_link"><xsl:attribute name="href"><xsl:value-of
select="concat(substring(following-sibling::*[1]/tei:graphic/@url,1,($filename_length - 4)),'.html')"
/></xsl:attribute>Next</a>
</span>
</xsl:when>
<xsl:otherwise/>
</xsl:choose>
</h1>
</xsl:template>
我得到了同样的结果。我不知道为什么。我显然不像我想的那样理解 preceding-sibling 和 following-sibling，如果有更简洁的方法来完成我想要的，我会很乐意使用它。
我不明白你想实现什么，但你的一些代码看起来很奇怪，例如你想用
实现什么
<xsl:variable name="total_blocks">
<xsl:value-of select="../last()"/>
</xsl:variable>
？一般来说，这样的构造可以写成 <xsl:variable name="total_blocks" select="../last()"/> 但表达式 ../last() 将简单地 return 1 只要有父节点 ...
另一个奇怪的是 count(../following-sibling::node()/position())，我认为它的作用不超过 count(../following-sibling::node())。
首先我想为这个问题的长度道歉，但希望提供这些信息会有所帮助。
我正尝试在多个 xml 文档上使用单个 xsl，它适用于我的原始文档（房间中四面墙的文本，每面墙都表示为一个 TEI surfaceGrp 元素）。但是，现在我需要修改xsl来处理一个额外的TEI surfaceGrp元素，代表一个书写页面的两侧，然后是页面的集合。
我原来的xml四面墙代码是这样的：
<TEI>
<sourceDoc>
<surfaceGrp xml:id="wall" n="South Wall">
<surface xml:id="EETS.T.29">
<label>Verse 29</label>
<graphic url="sw_test_1.jpg"/>
<zone>
<line/>
</zone>
</surface>
<surface xml:id="EETS.T.30">
<label>Verse 30</label>
<graphic url="sw_test_2.jpg"/>
<zone>
<line/>
</zone>
</surface>
<surface xml:id="EETS.T.27">
<label>Verse 27</label>
<graphic url="sw_test_3.jpg"/>
<zone>
<line/>
</zone>
</surface>
<surface xml:id="EETS.T.56">
<label>Verse 56</label>
<graphic url="sw_test_4.jpg"/>
<zone>
<line/>
</zone>
</surface>
<surface xml:id="EETS.T.57">
<label>Verse 57</label>
<graphic url="sw_test_5.jpg"/>
<zone>
<line/>
</zone>
</surface>
<surface xml:id="EETS.T.58">
<label>Verse 58</label>
<graphic url="sw_test_6.jpg"/>
<zone>
<line/>
</zone>
</surface>
<surface xml:id="EETS.T.59">
<label>Verse 59</label>
<graphic url="sw_test_7.jpg"/>
<zone>
<line/>
</zone>
</surface>
</surfaceGrp>
<surfaceGrp xml:id="wall" n="West Wall">
<surface xml:id="EETS.T.60">
<label>Verse 60</label>
<graphic url="ww_test_1.jpg"/>
<zone>
<line/>
</zone>
</surface>
<surface xml:id="EETS.T.63">
<label>Verse 63</label>
<graphic url="ww_test_2.jpg"/>
<zone>
<line/>
</zone>
</surface>
</surfaceGrp>
</sourceDoc>
我将其转换为以下 html
<h1 class="menuHeader">
<span class="menuitem" id="image_thumbnail">
<a class="nav_link" href="sw_test_1-thumbnail.html">
<img class="thumbnail" src="../../Testament/Clopton/Thumbnails/sw_test_1-thumbnail.jpg"
alt="Verse 29"/>
</a>
</span>
<span class="menuitem" id="image_thumbnail">
<a class="nav_link" href="sw_test_2-thumbnail.html">
<img class="thumbnail" src="../../Testament/Clopton/Thumbnails/sw_test_2-thumbnail.jpg"
alt="Verse 30"/>
</a>
</span>
<span class="menuitem" id="image_thumbnail">
<a class="nav_link" href="sw_test_3-thumbnail.html">
<img class="thumbnail" src="../../Testament/Clopton/Thumbnails/sw_test_3-thumbnail.jpg"
alt="Verse 27"/>
</a>
</span>
<span class="menuitem" id="image_thumbnail">
<a class="nav_link" href="sw_test_4-thumbnail.html">
<img class="thumbnail" src="../../Testament/Clopton/Thumbnails/sw_test_4-thumbnail.jpg"
alt="Verse 56"/>
</a>
</span>
<span class="menuitem" id="image_thumbnail">
<a class="nav_link" href="sw_test_5-thumbnail.html">
<img class="thumbnail" src="../../Testament/Clopton/Thumbnails/sw_test_5-thumbnail.jpg"
alt="Verse 57"/>
</a>
</span>
<span class="menuitem" id="image_thumbnail">
<a class="nav_link" href="sw_test_6-thumbnail.html">
<img class="thumbnail" src="../../Testament/Clopton/Thumbnails/sw_test_6-thumbnail.jpg"
alt="Verse 58"/>
</a>
</span>
<span class="menuitem" id="image_thumbnail">
<a class="nav_link" href="sw_test_7-thumbnail.html">
<img class="thumbnail" src="../../Testament/Clopton/Thumbnails/sw_test_7-thumbnail.jpg"
alt="Verse 59"/>
</a>
</span>
<span class="menuitem" id="previousItem">
<a class="nav_link" href="sw_test_6.html"> Previous</a>
</span>
<span class="menuitem" id="nextItem">
<a class="nav_link" href="ww_test_1.html">Next</a>
</span>
通过这个 xsl:
<xsl:template name="menuHeader">
<xsl:variable name="filename_length" select="string-length(tei:graphic/@url)"/>
<h1 class="menuHeader">
<span class="menuitem" id="groupLabel">
<xsl:choose>
<xsl:when test="../../../../tei:teiHeader/fileDesc/SourceDesc='Clopton_Chantry_Chapel'">
<xsl:value-of select="../@n"/>
<xsl:text> </xsl:text>
<span id="modelViewer">
<a href="../../Model/three/examples/chantry_chapel.html">
<xsl:text>(View Model)</xsl:text>
</a>
</span>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="concat(../@xml:id,' ',@n)"/>
</xsl:otherwise>
</xsl:choose>
</span>
<xsl:apply-templates select=".././/tei:graphic" mode="list"/>
<xsl:variable name="last_block" as="xs:integer">
<xsl:value-of select="count(../preceding-sibling::tei:surfaceGrp)"/>
</xsl:variable>
<xsl:variable name="next_block" as="xs:integer">
<xsl:value-of select="count(../following-sibling::tei:surfaceGrp)"/>
</xsl:variable>
<xsl:variable name="total_blocks">
<xsl:value-of select="../last()"/>
</xsl:variable>
<xsl:variable name="group_position" as="xs:integer">
<xsl:value-of
select="../../count(tei:surfaceGrp) - count(../following-sibling::node()/position())"
/>
</xsl:variable>
<xsl:variable name="last_item_id">
<xsl:value-of select="../../tei:surfaceGrp[last()]/tei:surface[last()]/@xml:id"/>
</xsl:variable>
<xsl:choose>
<xsl:when test="count(preceding-sibling::tei:surface)+1 > 1">
<span class="menuitem" id="previousItem">
<a class="nav_link">
<xsl:attribute name="href">
<xsl:value-of select="concat(substring(preceding-sibling::*[1]/tei:graphic/@url,1,($filename_length - 4)),'.html')"/>
</xsl:attribute>
Previous</a>
</span>
</xsl:when>
<xsl:when test="count(../preceding-sibling::tei:surfaceGrp)+1 > 1">
<span class="menuitem" id="previousItem">
<a class="nav_link"><xsl:attribute name="href">
<xsl:value-of select="concat(substring(../../tei:surfaceGrp[$last_block]/tei:surface[last()]/tei:graphic/@url,1,($filename_length - 4)),'.html')"/>
</xsl:attribute>Previous</a>
</span>
</xsl:when>
<xsl:otherwise>
<span class="menuitem" id="previousItem">
<a class="nav_link">Previous</a>
</span>
</xsl:otherwise>
</xsl:choose>
<xsl:choose>
<xsl:when test="$last_item_id = @xml:id">
<span class="menuitem" id="nextItem">
<a class="nav_link">Next</a>
</span>
</xsl:when>
<xsl:when test="position() = last()">
<span class="menuitem" id="nextItem">
<a class="nav_link"><xsl:attribute name="href"><xsl:value-of
select="concat(substring(../../tei:surfaceGrp[$group_position+1]/tei:surface[1]/tei:graphic/@url,1,($filename_length - 4)),'.html')"
/></xsl:attribute>Next</a>
</span>
</xsl:when>
<xsl:when test="not(position() = last())">
<span class="menuitem" id="nextItem">
<a class="nav_link"><xsl:attribute name="href"><xsl:value-of
select="concat(substring(following-sibling::*[1]/tei:graphic/@url,1,($filename_length - 4)),'.html')"
/></xsl:attribute>Next</a>
</span>
</xsl:when>
<xsl:otherwise/>
</xsl:choose>
</h1>
</xsl:template>
<xsl:template match="tei:graphic" mode="list">
<span class="menuitem" id="image_thumbnail">
<a class="nav_link">
<xsl:attribute name="href">
<xsl:value-of select="concat(substring(@url,1,string-length(@url)-4),'.html')"/>
</xsl:attribute>
<img class="thumbnail">
<xsl:attribute name="src">
<xsl:value-of
select="concat('../../',$title_folder,'/',$witness,'/',$thumbnail_folder,'/',substring(@url,1,string-length(@url)-4),'-thumbnail.jpg')"
/>
</xsl:attribute>
<xsl:attribute name="alt">
<xsl:value-of select="../tei:label"/>
</xsl:attribute>
</img>
</a>
</span>
</xsl:template>
当我 运行 在新文档上使用额外的 surfaceGrp 元素时，
<TEI>
<sourceDoc>
<surfaceGrp xml:id="g.3" n="gathering">
<surfaceGrp xml:id="f.19" n="folio">
<surface n="verso">
<graphic url="Jesus_Q_G_8_f19v.jpg"/>
<zone n="EETS.QD.I">
<line/>
</zone>
<zone n="EETS.QD.1">
<line/>
</zone>
</surface>
</surfaceGrp>
<surfaceGrp xml:id="f.20" n="folio">
<surface n="recto">
<graphic url="Jesus_Q_G_8_f20r.jpg"/>
<zone n="EETS.QD.1">
<line/>
</zone>
<zone n="EETS.QD.2">
<line/>
</zone>
<zone n="EETS.QD.3">
<line/>
</zone>
<zone n="EETS.QD.4">
<line/>
</zone>
</surface>
<surface n="verso">
<graphic url="Jesus_Q_G_8_f20v.jpg"/>
<zone n="EETS.QD.4">
<line>
<orig>To see my son <hi rend="underline">thus</hi> nailed to <hi
rend="underline">a tre</hi> .</orig>
</line>
</zone>
<zone n="EETS.QD.5">
<line/>
</zone>
<zone n="EETS.QD.6">
<line/>
</zone>
<zone n="EETS.QD.7">
<line/>
</zone>
</surface>
</surfaceGrp>
</surfaceGrp>
</sourceDoc>
我只得到一页的信息。这是有道理的，因为页面与原始代码中的墙一样适合相同的 surfaceGrp 插槽。但是当我尝试修改代码以向上移动到页面集合级别时
<xsl:template name="menuHeader">
<xsl:variable name="filename_length" select="string-length(tei:graphic/@url)"/>
<h1 class="menuHeader">
<span class="menuitem" id="groupLabel">
<xsl:choose>
<xsl:when test="../../../../tei:teiHeader/fileDesc/SourceDesc='Clopton_Chantry_Chapel'">
<xsl:value-of select="../@n"/>
<xsl:text> </xsl:text>
<span id="modelViewer">
<a href="../../Model/three/examples/chantry_chapel.html">
<xsl:text>(View Model)</xsl:text>
</a>
</span>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="concat(../@xml:id,' ',@n)"/>
</xsl:otherwise>
</xsl:choose>
</span>
<xsl:apply-templates select=".././/tei:graphic" mode="list"/>
<xsl:variable name="last_block" as="xs:integer">
<xsl:choose>
<xsl:when test="../../../../tei:teiHeader/fileDesc/SourceDesc='Clopton_Chantry_Chapel'">
<xsl:value-of select="count(../preceding-sibling::tei:surfaceGrp)"/>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="count(../../preceding-sibling::tei:surfaceGrp)"/>
</xsl:otherwise>
</xsl:choose>
</xsl:variable>
<xsl:variable name="next_block" as="xs:integer">
<xsl:choose>
<xsl:when test="../../../../tei:teiHeader/fileDesc/SourceDesc='Clopton_Chantry_Chapel'">
<xsl:value-of select="count(../following-sibling::tei:surfaceGrp)"/>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="count(../../following-sibling::tei:surfaceGrp)"/>
</xsl:otherwise>
</xsl:choose>
</xsl:variable>
<xsl:variable name="total_blocks">
<xsl:value-of select="../last()"/>
</xsl:variable>
<xsl:variable name="group_position" as="xs:integer">
<xsl:choose>
<xsl:when test="../../../../tei:teiHeader/fileDesc/SourceDesc='Clopton_Chantry_Chapel'">
<xsl:value-of
select="../../count(tei:surfaceGrp) - count(../following-sibling::node()/position())"
/>
</xsl:when>
<xsl:otherwise>
<xsl:value-of
select="../../../count(tei:surfaceGrp) - count(../following-sibling::node()/position())"
/>
</xsl:otherwise>
</xsl:choose>
</xsl:variable>
<xsl:variable name="last_item_id">
<xsl:choose>
<xsl:when test="../../../../tei:teiHeader/fileDesc/SourceDesc='Clopton_Chantry_Chapel'">
<xsl:value-of select="../../tei:surfaceGrp[last()]/tei:surface[last()]/@xml:id"/>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="../../../tei:surfaceGrp[last()]/tei:surfaceGrp[last()]/tei:surface[last()]/@xml:id"/>
</xsl:otherwise>
</xsl:choose>
</xsl:variable>
<xsl:choose>
<xsl:when test="count(preceding-sibling::tei:surface)+1 > 1">
<span class="menuitem" id="previousItem">
<a class="nav_link">
<xsl:attribute name="href">
<xsl:value-of select="concat(substring(preceding-sibling::*[1]/tei:graphic/@url,1,($filename_length - 4)),'.html')"/>
</xsl:attribute>
Previous</a>
</span>
</xsl:when>
<xsl:when test="count(../preceding-sibling::tei:surfaceGrp)+1 > 1">
<span class="menuitem" id="previousItem">
<a class="nav_link"><xsl:attribute name="href">
<xsl:value-of select="concat(substring(../../tei:surfaceGrp[$last_block]/tei:surface[last()]/tei:graphic/@url,1,($filename_length - 4)),'.html')"/>
</xsl:attribute>Previous</a>
</span>
</xsl:when>
<xsl:otherwise>
<span class="menuitem" id="previousItem">
<a class="nav_link">Previous</a>
</span>
</xsl:otherwise>
</xsl:choose>
<xsl:choose>
<xsl:when test="$last_item_id = @xml:id">
<span class="menuitem" id="nextItem">
<a class="nav_link">Next</a>
</span>
</xsl:when>
<xsl:when test="position() = last()">
<span class="menuitem" id="nextItem">
<a class="nav_link"><xsl:attribute name="href"><xsl:value-of
select="concat(substring(../../tei:surfaceGrp[$group_position+1]/tei:surface[1]/tei:graphic/@url,1,($filename_length - 4)),'.html')"
/></xsl:attribute>Next</a>
</span>
</xsl:when>
<xsl:when test="not(position() = last())">
<span class="menuitem" id="nextItem">
<a class="nav_link"><xsl:attribute name="href"><xsl:value-of
select="concat(substring(following-sibling::*[1]/tei:graphic/@url,1,($filename_length - 4)),'.html')"
/></xsl:attribute>Next</a>
</span>
</xsl:when>
<xsl:otherwise/>
</xsl:choose>
</h1>
</xsl:template>
我得到了同样的结果。我不知道为什么。我显然不像我想的那样理解 preceding-sibling 和 following-sibling，如果有更简洁的方法来完成我想要的，我会很乐意使用它。
我不明白你想实现什么，但你的一些代码看起来很奇怪，例如你想用
实现什么 <xsl:variable name="total_blocks">
<xsl:value-of select="../last()"/>
</xsl:variable>
？一般来说，这样的构造可以写成 <xsl:variable name="total_blocks" select="../last()"/> 但表达式 ../last() 将简单地 return 1 只要有父节点 ...
另一个奇怪的是 count(../following-sibling::node()/position())，我认为它的作用不超过 count(../following-sibling::node())。