我不熟悉不同格式之间的转换。我的目标是将一个纯文本格式的工具箱中的符号转换为svg。一个简单的例子是，我有一个橙色的椭圆，符号是这样的（x和y是坐标系，所以0和0意味着椭圆在中间）：
GRAPHREP
PEN color:$000000 w:2pt
FILL color:$ff7f00
ELLIPSE x:0pt y:0pt rx:114pt ry:70pt
我想要的输出是一个类似于这样的svg代码（例如，cx和cy坐标是随机选择的）：
<svg width="400" height="400" xmlns="http://www.w3.org/2000/svg" xmlns:svg="http://www.w3.org/2000/svg">
<g>
<ellipse fill="#ff7f00" stroke="#000000" stroke-width="2" stroke-dasharray="null" stroke-linejoin="null" stroke-linecap="null" cx="250" cy="250" id="svg_1" rx="114" ry="70"/>
</g>
</svg>
我发现这两个线程使用XSLT解析文本文件，并使用未解析的文本将文本转换为XML：需要更多深度在那里，他们使用XSLT2.0、unparsed-text（）函数和regex将纯文本转换为xml。在我的例子中，如何可能获得像ELLIPSE（是regex可以识别所有大写单词？）以及参数（无论如何，是否可以从纯文本中获取Xpath？）？一个好的实现在XSLT2.0中可行吗寻找另一种方法？任何帮助都将不胜感激！
以下是如何使用unparsed-text()加载文本文件，并使用xsl:analyze-text解析内容以生成中间XML文档，然后使用"推送"样式表转换该XML的示例。
它展示了如何支持ELLIPSE、CIRCLE和RECTANGLE文本转换的示例。你可能需要对它进行一些自定义，但应该让你知道什么是可能的。通过添加regex和unparsed-text()，XSLT2.0和3.0使各种文本转换成为可能，而这些转换在XSLT1.0中会非常麻烦或困难。
使用名为"drawing.txt"的文件，其中包含以下内容：
GRAPHREP
PEN color:$000000 w:2pt
FILL color:$ff7f00
ELLIPSE x:0pt y:0pt rx:114pt ry:70pt
GRAPHREP
PEN color:$000000 w:2pt
FILL color:$ff7f00
CIRCLE x:0pt y:0pt rx:114pt ry:70pt
GRAPHREP
PEN color:$000000 w:2pt
FILL color:$ff7f00
RECTANGLE x:0pt y:0pt width:114pt height:70pt
在同一目录中执行以下XSLT：
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:local="local"
exclude-result-prefixes="xs"
version="2.0"
xmlns:svg="http://www.w3.org/2000/svg">
<xsl:output indent="yes"/>
<!--matches sequences of UPPER-CASE letters -->
<xsl:variable name="label-pattern" select="'[A-Z]+'"/>
<!--matches the "attributes" in the line i.e. w:2pt,
has two capture groups (1) => attribute name, (2) => attribute value -->
<xsl:variable name="attribute-pattern" select="'s?(S+):(S+)'"/>
<!--matches a line of data for the drawing text,
has two capture groups (1) => label, (2) attribute data-->
<xsl:variable name="line-pattern" select="concat('(', $label-pattern, ')s(.*)n?')"/>
<xsl:template match="@* | node()">
<xsl:copy>
<xsl:apply-templates select="@* | node()"/>
</xsl:copy>
</xsl:template>
<xsl:template match="/">
<svg width="400" height="400">
<g>
<!-- Find the text patterns indicating the shape -->
<xsl:analyze-string select="unparsed-text('drawing.txt')"
regex="{concat('(', $label-pattern, ')n((', $line-pattern, ')+)n?')}">
<xsl:matching-substring>
<!--Convert text to XML -->
<xsl:variable name="drawing-markup" as="element()">
<!--Create an element for this group, using first matched pattern as the element name
(i.e. GRAPHREP => <GRAPHREP>) -->
<xsl:element name="{regex-group(1)}">
<!--split the second matched group for this shape into lines by breaking on newline-->
<xsl:variable name="lines" select="tokenize(regex-group(2), 'n')"/>
<xsl:for-each select="$lines">
<!--for each line, run through this process to create an element with attributes
(e.g. FILL color:$frf7f00 => <FILL color=""/>
-->
<xsl:analyze-string select="." regex="{$line-pattern}">
<xsl:matching-substring>
<!--create an element using the UPPER-CASE label starting the line -->
<xsl:element name="{regex-group(1)}">
<!-- capture each of the attributes -->
<xsl:analyze-string select="regex-group(2)" regex="s?(S+):(S+)">
<xsl:matching-substring>
<!--convert foo:bar into attribute foo="bar",
translate $ => #
and remove the letters 'p' and 't' by translating into nothing"-->
<xsl:attribute name="{regex-group(1)}" select="translate(regex-group(2), '$pt', '#')"/>
</xsl:matching-substring>
<xsl:non-matching-substring/>
</xsl:analyze-string>
</xsl:element>
</xsl:matching-substring>
<xsl:non-matching-substring/>
</xsl:analyze-string>
</xsl:for-each>
</xsl:element>
</xsl:variable>
<!--Uncomment the copy-of below if you want to see the intermediate XML $drawing-markup-->
<!--<xsl:copy-of select="$drawing-markup"/>-->
<!-- Transform XML into SVG -->
<xsl:apply-templates select="$drawing-markup"/>
</xsl:matching-substring>
<xsl:non-matching-substring/>
</xsl:analyze-string>
</g>
</svg>
</xsl:template>
<!--==========================================-->
<!-- Templates to convert the $drawing-markup -->
<!--==========================================-->
<!--for supported shapes, create the element using
lower-case value, and change rectangle to rect
for the svg element name-->
<xsl:template match="GRAPHREP[ELLIPSE | CIRCLE | RECTANGLE]">
<xsl:element name="{replace(lower-case(local-name(ELLIPSE | CIRCLE | RECTANGLE)), 'rectangle', 'rect', 'i')}">
<xsl:attribute name="id" select="concat('id_', generate-id())"/>
<xsl:apply-templates />
</xsl:element>
</xsl:template>
<xsl:template match="ELLIPSE | CIRCLE | RECTANGLE"/>
<!-- Just process the content of GRAPHREP.
If there are multiple shapes and you want a new
<svg><g></g></svg> for each shape,
then move it from the template for "/" into this template-->
<xsl:template match="GRAPHREP/*">
<xsl:apply-templates select="@*"/>
</xsl:template>
<xsl:template match="PEN" priority="1">
<!--TODO: test if these attributes exist, if they do, do not create these defaults.
Hard-coding for now, to match desired output, since I don't know what the text
attributes would be, but could wrap each with <xsl:if test="not(@dasharray)">-->
<xsl:attribute name="stroke-dasharray" select="'null'"/>
<xsl:attribute name="stroke-linjoin" select="'null'"/>
<xsl:attribute name="stroke-linecap" select="'null'"/>
<xsl:apply-templates select="@*"/>
</xsl:template>
<!-- conterts @color => @stroke -->
<xsl:template match="PEN/@color">
<xsl:attribute name="stroke" select="."/>
</xsl:template>
<!--converts @w => @stroke-width -->
<xsl:template match="PEN/@w">
<xsl:attribute name="stroke-width" select="."/>
</xsl:template>
<!--converts @color => @fill and replaces $ with # -->
<xsl:template match="FILL/@color">
<xsl:attribute name="fill" select="translate(., '$', '#')"/>
</xsl:template>
<!-- converts @x => @cx with hard-coded values.
May want to use value from text, but matching your example-->
<xsl:template match="ELLIPSE/@x | ELLIPSE/@y">
<!--not sure if there was a relationship between ELLIPSE x:0pt y:0pt, and why 0pt would be 250,
but just an example...-->
<xsl:attribute name="c{name()}" select="250"/>
</xsl:template>
</xsl:stylesheet>
生成以下SVG输出：
<?xml version="1.0" encoding="UTF-8"?>
<svg xmlns:local="local"
xmlns:svg="http://www.w3.org/2000/svg"
width="400"
height="400">
<g>
<ellipse id="id_d2e0"
stroke-dasharray="null"
stroke-linjoin="null"
stroke-linecap="null"
stroke="#000000"
stroke-width="2"
fill="#ff7f00"
cx="250"
cy="250"
rx="114"
ry="70"/>
<circle id="id_d3e0"
stroke-dasharray="null"
stroke-linjoin="null"
stroke-linecap="null"
stroke="#000000"
stroke-width="2"
fill="#ff7f00"
x="0"
y="0"
rx="114"
ry="70"/>
<rect id="id_d4e0"
stroke-dasharray="null"
stroke-linjoin="null"
stroke-linecap="null"
stroke="#000000"
stroke-width="2"
fill="#ff7f00"
x="0"
y="0"
width="114"
height="70"/>
</g>
</svg>