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cssxsltfontsxslt-2.0xsl-fo

Is it possible to export a font as base64 using xslt?

I want to create some html output from .fo file and I wrote myself some xsl templates to get the desired output. For the styling of the html-elements, each element has a class attribute with the matching css-class.

That looks like the following:

.page_2_text_3 {
   transform: translate(0pt, 82.96pt);
   font-family: ITCFranklinGothicStd-Book;
   font-style: normal;
   font-weight: 400;
   font-variant: normal;
   font-size: 10pt;
   color: #000000;
}

The problem here is that the font ITCFranklinGothicStd-Book can't be found and is substituted by some other font.

Is there any way to export the font as base64 in a template, so i can add a @font-face to my css like so:

<xsl:template name="fontexport">
  <xsl:param name="font"/>
  <xsl:param name="fontname"/>
  @font-face {
   font-family: "<xsl:value-of select="$fontname"/>";
   src: url("<xsl:value-of select="$font" mode="base64"/>")<!-- convert the $font into base64 -->
  }
</xsl:template>

this should create the following output when calling call-template with font and fontname as parameter

@font-face {
   font-family: "ITCFranklinGothicStd-Book";
   src: url("data:application/x-font-woff;charset=utf-8;base64,d09GRgABAAAAAB...)
}

Is that possible somehow?

Solution

  • If you move to an XSLT processor that supports the EXPath file module, such as Saxon-PE, then you can read the font file using file:read-binary(), which returns an xs:base64Binary value, and the string() function applied to this value gives you the Base64 representation.