1 files changed, 170 insertions, 0 deletions
diff --git a/testing/web-platform/tests/mathml/tools/mathvariant-transforms.py b/testing/web-platform/tests/mathml/tools/mathvariant-transforms.py
new file mode 100755
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+++ b/testing/web-platform/tests/mathml/tools/mathvariant-transforms.py
@@ -0,0 +1,170 @@
+#!/usr/bin/env python3
+
+from lxml import etree
+from utils.misc import downloadWithProgressBar, UnicodeXMLURL
+from utils import mathfont
+
+# Retrieve the unicode.xml file if necessary.
+unicodeXML = downloadWithProgressBar(UnicodeXMLURL)
+
+# Extract the mathvariants transformation.
+xsltTransform = etree.XSLT(etree.XML('''\
+<xsl:stylesheet version="1.0"
+                       xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
+  <xsl:strip-space elements="*"/>
+  <xsl:template match="charlist">
+    <root><xsl:apply-templates select="character"/></root>
+  </xsl:template>
+  <xsl:template match="character">
+    <xsl:if test="surrogate">
+      <entry>
+        <xsl:attribute name="mathvariant">
+            <xsl:value-of select="surrogate/@mathvariant"/>
+        </xsl:attribute>
+        <xsl:attribute name="baseChar">
+          <xsl:value-of select="surrogate/@ref"/>
+        </xsl:attribute>
+        <xsl:attribute name="transformedChar">
+          <xsl:choose>
+            <xsl:when test="bmp">
+              <xsl:value-of select="bmp/@ref"/>
+            </xsl:when>
+            <xsl:otherwise>
+               <xsl:value-of select="@id"/>
+            </xsl:otherwise>
+          </xsl:choose>
+        </xsl:attribute>
+      </entry>
+    </xsl:if>
+  </xsl:template>
+</xsl:stylesheet>'''))
+
+# Put the mathvariant transforms into a Python structure.
+mathvariantTransforms = {}
+root = xsltTransform(etree.parse(unicodeXML)).getroot()
+def parseCodePoint(aHexaString):
+    return int("0x%s" % aHexaString[1:], 16)
+for entry in root:
+    mathvariant = entry.get("mathvariant")
+    baseChar = parseCodePoint(entry.get("baseChar"))
+    transformedChar = parseCodePoint(entry.get("transformedChar"))
+    if mathvariant not in mathvariantTransforms:
+        mathvariantTransforms[mathvariant] = {}
+    mathvariantTransforms[mathvariant][baseChar] = transformedChar
+
+# There is no "isolated" mathvariant.
+del mathvariantTransforms["isolated"]
+
+# Automatic mathvariant uses the same transform as italic.
+# It is handled specially (see below).
+mathvariantTransforms["auto"] = mathvariantTransforms["italic"]
+
+# Create a WOFF font for each mathvariant.
+for mathvariant in mathvariantTransforms:
+    if mathvariant == "auto":
+        continue
+    font = mathfont.create("mathvariant-%s" % mathvariant, "Copyright (c) 2016 MathML Association")
+    for baseChar in mathvariantTransforms[mathvariant]:
+        if baseChar not in font:
+            mathfont.createGlyphFromValue(font, baseChar)
+        transformedChar = mathvariantTransforms[mathvariant][baseChar]
+        mathfont.createGlyphFromValue(font, transformedChar)
+    mathfont.save(font)
+
+# Create a MathML and CSS test for each mathvariant.
+for mathvariant in mathvariantTransforms:
+    print("Generating tests for %s..." % mathvariant, end="")
+    reftest = open("../relations/css-styling/mathvariant-%s.html" % mathvariant, "w")
+    reftestReference = open("../relations/css-styling/mathvariant-%s-ref.html" % mathvariant, "w")
+    CSSreftest = open("../../css/css-text/text-transform/math/text-transform-math-%s-001.tentative.html" % mathvariant, "w")
+    CSSreftestReference = open("../../css/css-text/text-transform/math/text-transform-math-%s-001.tentative-ref.html" % mathvariant, "w")
+    source = '\
+<!DOCTYPE html>\n\
+<html>\n\
+<head>\n\
+<meta charset="utf-8"/>\n\
+<title>%s</title>\n'
+    reftest.write(source % ("mathvariant %s" % mathvariant))
+    reftestReference.write(source % ("mathvariant %s (reference)" % mathvariant))
+    CSSreftest.write(source % ("text-transform math-%s" % mathvariant))
+    CSSreftestReference.write(source % ("text-transform math-%s (reference)" % mathvariant))
+    if mathvariant == "auto":
+        mathAssert = "Verify that a single-char <mi> is equivalent to an <mi> with the transformed italic unicode character."
+        mapping = "italic"
+    else:
+        mathAssert = "Verify that a single-char <mtext> with a %s mathvariant is equivalent to an <mtext> with the transformed unicode character." % mathvariant
+        mapping = mathvariant
+    source ='\
+<link rel="help" href="https://w3c.github.io/mathml-core/#css-styling">\n\
+<link rel="help" href="https://w3c.github.io/mathml-core/#the-mathvariant-attribute">\n\
+<link rel="help" href="https://w3c.github.io/mathml-core/#new-text-transform-values">\n\
+<link rel="help" href="https://w3c.github.io/mathml-core/#%s-mappings">\n\
+<link rel="match" href="mathvariant-%s-ref.html"/>\n\
+<meta name="assert" content="%s">\n'
+    reftest.write(source % (mapping, mathvariant, mathAssert))
+    source = '\
+<link rel="help" href="https://github.com/w3c/csswg-drafts/issues/3745"/>\n\
+<link rel="help" href="https://w3c.github.io/mathml-core/#new-text-transform-values">\n\
+<link rel="help" href="https://w3c.github.io/mathml-core/#%s-mappings">\n\
+<link rel="match" href="text-transform-math-%s-001.tentative-ref.html"/>\n\
+<meta name="assert" content="Verify that a character with \'text-transform: math-%s\' renders the same as the transformed unicode character.">\n'
+    CSSreftest.write(source % (mapping, mathvariant, mathvariant))
+    WOFFfont = "mathvariant-%s.woff" % mapping
+    source = '\
+<style>\n\
+  @font-face {\n\
+    font-family: TestFont;\n\
+    src: url("/fonts/math/%s");\n\
+  }\n\
+  body > span {\n\
+    padding: 10px;\n\
+  }\n\
+  span > span {\n\
+    font-family: monospace;\n\
+    font-size: 10px;\n\
+  }\n\
+  .testfont {\n\
+    font-family: TestFont;\n\
+    font-size: 10px;\n\
+  }\n\
+</style>\n\
+<body>\n\
+  <!-- Generated by mathml/tools/mathvariant.py; DO NOT EDIT. -->\n\
+  <p>Test passes if all the equalities below are true.</p>\n' % WOFFfont
+    reftest.write(source)
+    reftestReference.write(source)
+    CSSreftest.write(source)
+    CSSreftestReference.write(source)
+    charIndex = 0
+    for baseChar in mathvariantTransforms[mathvariant]:
+        transformedChar = mathvariantTransforms[mathvariant][baseChar]
+        if mathvariant == "auto":
+            tokenTag = '<mi>&#x%0X;</mi>' % baseChar
+            tokenTagRef = '<mi>&#x%0X;</mi>' % transformedChar
+        else:
+            tokenTag = '<mtext mathvariant="%s">&#x%0X;</mtext>' % (mathvariant, baseChar)
+            tokenTagRef = '<mtext>&#x%0X;</mtext>' % transformedChar
+        reftest.write('  <span><math class="testfont">%s</math>=<span>%05X</span></span>' % (tokenTag, transformedChar))
+        reftestReference.write('  <span><math class="testfont">%s</math>=<span>%05X</span></span>' % (tokenTagRef, transformedChar))
+        CSSreftest.write('  <span><span class="testfont" style="text-transform: math-%s">&#x%0X;</span>=<span>%05X</span></span>' % (mathvariant, baseChar, transformedChar))
+        CSSreftestReference.write('  <span><span class="testfont">&#x%0X;</span>=<span>%05X</span></span>' % (transformedChar, transformedChar))
+        charIndex += 1
+        if charIndex % 10 == 0:
+            reftest.write('<br/>')
+            reftestReference.write('<br/>')
+            CSSreftest.write('<br/>')
+            CSSreftestReference.write('<br/>')
+        reftest.write('\n')
+        reftestReference.write('\n')
+        CSSreftest.write('\n')
+        CSSreftestReference.write('\n')
+    source = '</body>\n</html>\n'
+    reftest.write(source)
+    reftestReference.write(source)
+    CSSreftest.write(source)
+    CSSreftestReference.write(source)
+    reftest.close()
+    reftestReference.close()
+    CSSreftest.close()
+    CSSreftestReference.close()
+    print(" done.")