XSLT 2.0：创建 RegEx 以从连续文本节点枚举章节编号和描述

Question

我喜欢从 XML 文件中提取章节编号、标题和描述到 XML element/attribute 层次结构。它们分布在不同元素的连续文本中。 XML 看起来像这样：

<?xml version="1.0" encoding="utf-8"?>
<root>
  <cell>3.1.1.17 First Section The “First appropriate” section lists things that can occur when an event happens. All of these event conditions result in an error.
  </cell>
  <cell>3.1.1.18 Second Section This section lists things that occur under certain conditions. 3.1.1.19 Third Section This section lists events that occur within a specific space. 3.2 SPACE chapter provides descriptions other stuff. See also: Chapter 4, “Other Stuff Reference” in the Manual.
  </cell>
</root>

所需的输出应如下所示：

<?xml version="1.0" encoding="utf-8"?>
<Root>
   <Desc chapter="3.1.1.17" title="First Section">The “First appropriate” section lists things that can occur when an event happens. All of these event conditions result in an error.</Desc>
   <Desc chapter="3.1.1.18" title="Second Section">This section lists things that occur under certain conditions.</Desc>
   <Desc chapter="3.1.1.19" title="Third Section">This section lists events that occur within a specific space. 3.2 SPACE chapter provides descriptions other stuff. See also: Chapter 4, “Other Stuff Reference” in the Manual.</Desc>
</Root>

到目前为止我的 XSLT 是：

<xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output indent="yes" method="xml" encoding="utf-8" />

  <xsl:template match="text()" />

  <xsl:template match="/root">
    <Root>
      <xsl:apply-templates select="cell" />
    </Root>
  </xsl:template>

  <xsl:template match="cell">
    <xsl:variable name="sections" as="element(Desc)*">
      <xsl:analyze-string regex="(\d+\.\d+\.\d+\.\d+)\s(.*?Section)(.*?)" select="text()">
        <xsl:matching-substring>
          <Desc chapter="{regex-group(1)}" title="{regex-group(2)}">
            <xsl:value-of select="regex-group(3)" />
          </Desc>
        </xsl:matching-substring>
      </xsl:analyze-string>
    </xsl:variable>
    <xsl:for-each select="$sections">
      <xsl:copy-of select="." />
    </xsl:for-each>
  </xsl:template>  
</xsl:stylesheet>

问题出在 RegEx 的最后一部分：(.*?) - 一个 non-greedy 消耗表达式。不幸的是我不能让它停在正确的位置。我尝试使用 ?: 和 (?=...) 使其在下一个 \d+\.\d+\.\d+\.\d+\. 之前停止 non-consuming，但 XSLT-2.0 的 RegEx 语法似乎与其他方言有些不同。

如何提取相关部分以便在 for-each 中方便地处理它们作为 regex-group(1..3)？

此外，我对所有 RegEx-tokens.

的相当完整的 XSLT-2.0 参考感兴趣

Answer 1

好像

<xsl:template match="cell">
    <xsl:variable name="sections">
        <xsl:analyze-string regex="(\d+\.\d+\.\d+\.\d+)\s(.*?Section)" select=".">
            <xsl:matching-substring>
                <xsl:message select="concat('|', regex-group(3), '|')"/>
                <Desc chapter="{regex-group(1)}" title="{regex-group(2)}">
                    <xsl:value-of select="regex-group(3)" />
                </Desc>
            </xsl:matching-substring>
            <xsl:non-matching-substring>
                <Value>
                    <xsl:value-of select="."/>
                </Value>
            </xsl:non-matching-substring>
        </xsl:analyze-string>
    </xsl:variable>
    <xsl:for-each select="$sections/Desc">
        <xsl:copy>
            <xsl:copy-of select="@*"/>
            <xsl:value-of select="following-sibling::Value[1]"/>
        </xsl:copy>
    </xsl:for-each>
</xsl:template>

捕获您想要 select 和尾随文本的数据。

Answer 2

抱歉，我必须用 JS 回复，但我相信您可以简单地弄清楚发生了什么。您的正则表达式和替换解决方案应该是这样的；

var xmlData = '<?xml version="1.0" encoding="utf-8"?>\n<root>\n  <cell>3.1.1.17 First Section The “First appropriate” section lists things that can occur when an event happens. All of these event conditions result in an error.\n  </cell>\n  <cell>3.1.1.18 Second Section This section lists things that occur under certain conditions. 3.1.1.19 Third Section This section lists events that occur within a specific space. 3.2 SPACE chapter provides descriptions other stuff. See also: Chapter 4, “Other Stuff Reference” in the Manual.\n  </cell>\n</root>',
        rex = /<cell>(?:\s*(\d+.\d+.\d+.\d+)\s+(\w+)\s+Section)(.+)\n*\s*<\/cell>/gm,
        xml = xmlData.replace(rex,'<Desc chapter="" title=" Section"></desc>');
console.log(xmlData);
<?xml version="1.0" encoding="utf-8"?>
<root>
  <Desc chapter="3.1.1.17" title="First Section"> The “First appropriate” section lists things that can occur when an event happens. All of these event conditions result in an error.</desc>
  <Desc chapter="3.1.1.18" title="Second Section"> This section lists things that occur under certain conditions. 3.1.1.19 Third Section This section lists events that occur within a specific space. 3.2 SPACE chapter provides descriptions other stuff. See also: Chapter 4, “Other Stuff Reference” in the Manual.</desc>
</root>

XSLT 2.0：创建 RegEx 以从连续文本节点枚举章节编号和描述

XSLT 2.0: Create RegEx to enumerate chapter numbers and description from continous text nodes

regex

xml

xslt-2.0