Nei*_*ock 7 xml xslt symphony-cms xslt-1.0
我对SO社区的聪明人提出了一个问题.
下面是Symphony CMS生成的一小段XML .
<news>
<entry>
<title>Lorem Ipsum</title>
<body>
<p><strong>Lorem Ipsum</strong></p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed malesuada auctor magna. Vivamus urna justo, pulvinar nec, sagittis malesuada, accumsan in, massa. Quisque mi purus, gravida eget, ultricies a, porta in, sem. Maecenas justo elit, elementum vel, feugiat vulputate, pulvinar nec, velit. Fusce vel ante et diam bibendum euismod. Nunc vel nulla non lorem dignissim placerat. Nulla magna massa, auctor et, tempor nec, auctor sit amet, turpis. Quisque odio lacus, auctor at, posuere id, suscipit eget, dui. Phasellus aliquam. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Proin varius. Phasellus cursus. Cras mattis adipiscing turpis. Sed.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed malesuada auctor magna.</p>
</body>
</entry>
</news>
我需要做的是<body>根据指定的长度获取元素的一部分,以便在以下博客样式中显示:
Lorem ipsum dolor坐下来,精致的adipistur elit.Sed malesuada auctor magna.Vivamus urna justo,pulvinar nec,sagittis malesuada,accumsan in,massa.Quisque mi purus,gravida eget,ultricies a,porta in,sem ... 更多
... 更多是完整新闻项目的链接.我知道我可以选择特定的段落,我也知道我可以使用substring函数来带来指定数量的字符.但是,我需要保留文本的格式,即<body>元素中的HTML标记.
我意识到这会引发标签关闭的问题,但肯定有办法.希望有更多XSLT经验的人可以对这个问题有所了解.
这是一个完整的XSLT 1.0转换,可以完全解决问题.
这个XSLT转换:
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:ext="http://exslt.org/common"
xmlns:f="http://fxsl.sf.net/"
xmlns:myAdd="f:myAdd"
xmlns:myParam="f:myParam"
exclude-result-prefixes="ext f myAdd myParam"
>
<xsl:import href="scanl.xsl"/>
<!-- -->
<xsl:output omit-xml-declaration="yes" indent="yes"/>
<xsl:strip-space elements="*"/>
<!-- -->
<myAdd:myAdd/>
<myParam:myParam>0</myParam:myParam>
<!-- -->
<xsl:param name="pTruncateLength" select="772"/>
<!-- -->
<xsl:variable name="vFun" select="document('')/*/myAdd:*[1]"/>
<xsl:variable name="vZero" select="document('')/*/myParam:*[1]"/>
<!-- -->
<xsl:variable name="vrtfScanResults">
<xsl:call-template name="scanl">
<xsl:with-param name="pFun" select="$vFun"/>
<xsl:with-param name="pQ0" select="$vZero" />
<xsl:with-param name="pList" select="/*/*/body//text()"/>
</xsl:call-template>
</xsl:variable>
<!-- -->
<xsl:variable name="vScanResults"
select="ext:node-set($vrtfScanResults)"/>
<xsl:variable name="vindNode" select=
"count($vScanResults/*[. > $pTruncateLength][1]
/preceding-sibling::*)"/>
<!-- -->
<xsl:variable name="vrtfTruncInfo">
<xsl:for-each select="/*/*/body//text()">
<!-- -->
<xsl:variable name="vPos" select="position()"/>
<tNode id="{generate-id()}">
<xsl:attribute name="preserve">
<xsl:if test="$vPos < $vindNode">
<xsl:value-of select="string-length(.)"/>
</xsl:if>
<xsl:if test="$vPos > $vindNode">
<xsl:value-of select="0"/>
</xsl:if>
<xsl:if test="$vPos = $vindNode">
<xsl:value-of select=
"$vScanResults/*[$vindNode+1]
-
$pTruncateLength"/>
</xsl:if>
</xsl:attribute>
</tNode>
</xsl:for-each>
</xsl:variable>
<!-- -->
<xsl:variable name="vTruncInfo" select="ext:node-set($vrtfTruncInfo)"/>
<!-- -->
<xsl:template match="node()|@*">
<xsl:copy>
<xsl:apply-templates select="node()|@*"/>
</xsl:copy>
</xsl:template>
<!-- -->
<xsl:template match="text()[ancestor::body]">
<xsl:variable name="vAllowedLength"
select="$vTruncInfo/*[@id = generate-id(current())]/@preserve"
/>
<!-- -->
<xsl:value-of select="substring(.,1,$vAllowedLength)"/>
<xsl:if test="string-length(.) > $vAllowedLength
and
$vAllowedLength > 0
">
<strong> ...more</strong>
</xsl:if>
</xsl:template>
<!-- -->
<xsl:template match="myAdd:*" mode="f:FXSL">
<xsl:param name="pArg1"/>
<xsl:param name="pArg2"/>
<xsl:value-of select="$pArg1 + string-length($pArg2)"/>
</xsl:template>
</xsl:stylesheet>
当应用于原始源XML文档时:
<news>
<entry>
<title>Lorem Ipsum</title>
<body>
<p>
<strong>Lorem Ipsum</strong>
</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed malesuada auctor magna. Vivamus urna justo, pulvinar nec, sagittis malesuada, accumsan in, massa. Quisque mi purus, gravida eget, ultricies a, porta in, sem. Maecenas justo elit, elementum vel, feugiat vulputate, pulvinar nec, velit. Fusce vel ante et diam bibendum euismod. Nunc vel nulla non lorem dignissim placerat. Nulla magna massa, auctor et, tempor nec, auctor sit amet, turpis. Quisque odio lacus, auctor at, posuere id, suscipit eget, dui. Phasellus aliquam. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Proin varius. Phasellus cursus. Cras mattis adipiscing turpis. Sed.</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed malesuada auctor magna.</p>
<p>This text should not be displayed</p>
</body>
</entry>
</news>
产生想要的结果:
<news>
<entry>
<title>Lorem Ipsum</title>
<body>
<p>
<strong>Lorem Ipsum</strong>
</p>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed malesuada auctor magna. Vivamus urna justo, pulvinar nec, sagittis malesuada, accumsan in, massa. Quisque mi purus, gravida eget, ultricies a, porta in, sem. Maecenas justo elit, elementum vel, feugiat vulputate, pulvinar nec, velit. Fusce vel ante et diam bibendum euismod. Nunc vel nulla non lorem dignissim placerat. Nulla magna massa, auctor et, tempor nec, auctor sit amet, turpis. Quisque odio lacus, auctor at, posuere id, suscipit eget, dui. Phasellus aliquam. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Proin varius. Phasellus cursus. Cras mattis adipiscing turpis. Sed.</p>
<p>Lorem <strong> ...more</strong>
</p>
<p/>
</body>
</entry>
</news>
请注意以下事项:
FXSL库中的scanl样式表已导入.此模板通常用于累积处理项目列表的数据.执行实际处理的函数(模板匹配)作为参数传递给模板.必须传递给它的另一个参数是处理中的"初始"值,如果传递的项目列表为空,则返回该值.myAdd:*scanl
global参数$pTruncateLength保存超过文本必须截断的最大字符串长度
小智 5
这是我的版本.我已经对你的XML样本进行了测试,但它确实有效.
要调用它,请使用<xsl:apply-templates select="path/to/body/*" mode="truncate"/>.
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:strip-space elements="*"/>
<!-- limit: the truncation limit -->
<xsl:variable name="limit" select="250"/>
<!-- t: Total number of characters in the set -->
<xsl:variable name="t" select="string-length(normalize-space(//body))"/>
<xsl:template match="*" mode="truncate">
<xsl:variable name="preceding-strings">
<xsl:copy-of select="preceding::text()[ancestor::body]"/>
</xsl:variable>
<!-- p: number of characters up to the current node -->
<xsl:variable name="p" select="string-length(normalize-space($preceding-strings))"/>
<xsl:if test="$p < $limit">
<xsl:element name="{name()}">
<xsl:apply-templates select="@*" mode="truncate"/>
<xsl:apply-templates mode="truncate"/>
</xsl:element>
</xsl:if>
</xsl:template>
<xsl:template match="text()" mode="truncate">
<xsl:variable name="preceding-strings">
<xsl:copy-of select="preceding::text()[ancestor::body]"/>
</xsl:variable>
<!-- p: number of characters up to the current node -->
<xsl:variable name="p" select="string-length(normalize-space($preceding-strings))"/>
<!-- c: number of characters including current node -->
<xsl:variable name="c" select="$p + string-length(.)"/>
<xsl:choose>
<xsl:when test="$limit <= $c">
<xsl:value-of select="substring(., 1, ($limit - $p))"/>
<xsl:text>…</xsl:text>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="."/>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<xsl:template match="@*" mode="truncate">
<xsl:attribute name="{name(.)}"><xsl:value-of select="."/></xsl:attribute>
</xsl:template>
</xsl:stylesheet>