如何拆分文本和保留HTML标签(XSLT 2.0) [英] How to split text and preserve HTML tags (XSLT 2.0)
问题描述
我有一个带有描述节点的xml:
I have an xml that has a description node:
<config>
<desc>A <b>first</b> sentence here. The second sentence with some link <a href="myurl">The link</a>. The <u>third</u> one.</desc>
</config>
我正在尝试使用点作为分隔符来拆分句子,但要在HTML输出中同时保留最终的HTML标签. 到目前为止,我得到的是一个用于拆分描述的模板,但由于normalize-space和substring-before函数的缘故,HTML标记在输出中丢失了. 我当前的模板如下:
I am trying to split the sentences using dot as separator but keeping in the same time in the HTML output the eventual HTML tags. What I have so far is a template that splits the description but the HTML tags are lost in the output due to the normalize-space and substring-before functions. My current template is given below:
<xsl:template name="output-tokens">
<xsl:param name="sourceText" />
<!-- Force a . at the end -->
<xsl:variable name="newlist" select="concat(normalize-space($sourceText), ' ')" />
<!-- Check if we have really a point at the end -->
<xsl:choose>
<xsl:when test ="contains($newlist, '.')">
<!-- Find the first . in the string -->
<xsl:variable name="first" select="substring-before($newlist, '.')" />
<!-- Get the remaining text -->
<xsl:variable name="remaining" select="substring-after($newlist, '.')" />
<!-- Check if our string is not in fact a . or an empty string -->
<xsl:if test="normalize-space($first)!='.' and normalize-space($first)!=''">
<p><xsl:value-of select="normalize-space($first)" />.</p>
</xsl:if>
<!-- Recursively apply the template for the remaining text -->
<xsl:if test="$remaining">
<xsl:call-template name="output-tokens">
<xsl:with-param name="sourceText" select="$remaining" />
</xsl:call-template>
</xsl:if>
</xsl:when>
<!--If no . was found -->
<xsl:otherwise>
<p>
<!-- If the string does not contains a . then display the text but avoid
displaying empty strings
-->
<xsl:if test="normalize-space($sourceText)!=''">
<xsl:value-of select="normalize-space($sourceText)" />.
</xsl:if>
</p>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
并且我以以下方式使用它:
and I am using it in the following manner:
<xsl:template match="config">
<xsl:call-template name="output-tokens">
<xsl:with-param name="sourceText" select="desc" />
</xsl:call-template>
</xsl:template>
预期输出为:
<p>A <b>first</b> sentence here.</p>
<p>The second sentence with some link <a href="myurl">The link</a>.</p>
<p>The <u>third</u> one.</p>
推荐答案
Here is one way to implement the second approach suggested by Michael Kay using XSLT 2.
此样式表演示了两遍转换,其中第一遍在每个句子后引入<stop/>
标记,第二遍将所有以<stop/>
结尾的组括起来.
This stylesheet demonstrates a two-pass transformation where the first pass introduces <stop/>
markers after each sentence and the second pass encloses all groups ending with a <stop/>
in a paragraph.
<xsl:stylesheet version="2.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" indent="yes"/>
<!-- two-pass processing -->
<xsl:template match="/">
<xsl:variable name="intermediate">
<xsl:apply-templates mode="phase-1"/>
</xsl:variable>
<xsl:apply-templates select="$intermediate" mode="phase-2"/>
</xsl:template>
<!-- identity transform -->
<xsl:template match="@*|node()" mode="#all" priority="-1">
<xsl:copy>
<xsl:apply-templates select="@*|node()" mode="#current"/>
</xsl:copy>
</xsl:template>
<!-- phase 1 -->
<!-- insert <stop/> "milestone markup" after each sentence -->
<xsl:template match="text()" mode="phase-1">
<xsl:analyze-string select="." regex="\.\s+">
<xsl:matching-substring>
<xsl:value-of select="regex-group(0)"/>
<stop/>
</xsl:matching-substring>
<xsl:non-matching-substring>
<xsl:value-of select="."/>
</xsl:non-matching-substring>
</xsl:analyze-string>
</xsl:template>
<!-- phase 2 -->
<!-- turn each <stop/>-terminated group into a paragraph -->
<xsl:template match="*[stop]" mode="phase-2">
<xsl:copy>
<xsl:for-each-group select="node()" group-ending-with="stop">
<p>
<xsl:apply-templates select="current-group()" mode="#current"/>
</p>
</xsl:for-each-group>
</xsl:copy>
</xsl:template>
<!-- remove the <stop/> markers -->
<xsl:template match="stop" mode="phase-2"/>
</xsl:stylesheet>
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