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Digital Media Technology

Digital Media Technology. Week 6: Introduction to XSLT. Peter Verhaar. XML and Presentation. Initial separation of form an content Form is added through a stylesheet Presentation is flexible. Immateriality of digital information. No permanent connection to a physical medium

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Digital Media Technology

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  1. Digital Media Technology Week 6: Introduction to XSLT Peter Verhaar

  2. XML and Presentation • Initial separation of form an content • Form is added through a stylesheet • Presentation is flexible

  3. Immateriality of digital information • No permanent connection to a physical medium • Shape is created by rendering devices • Endurance and aesthetics • Decrease in the importance of form as a more general development on digital media? Mp3-files, e-Books

  4. Advantages • Flexible presentation: different ‘views’ on the data • Possibilities for filtering • Textual analyses: calculations

  5. Flexible presentation Please find <choice><sic>inclosed</sic><corr>enclosed</corr></choice>Diplomatic edition:<xsl:value-of select=“choice/sic”/> Critical edition:<xsl:value-of select=“choice/corr”/>

  6. XSLT Stylesheet

  7. XML Source XSLT Stylesheet XML Result

  8. Template • Oxford English Dictionary: “An instrument used as a gauge or guide in bringing any piece of work to the desired shape” ; “a tool in moulding … a guide in forming moulds for castings or pottery” • A blueprint / a model

  9. Tree diagram of an XSLT stylesheet

  10. TEI <titleStmt><title>Letter from De Erven F. Bohn to George Eliot</title></titleStmt> <xsl:template> <html> <head></head> <body> <h1> <xsl:value-of select=“titleStmt/title”/> </h1> </body> </htlml> </xsl:template> XSLT

  11. HTML Result file <html> <head></head> <body> <h1>Letter from De Erven F. Bohn to George Eliot</h1> </body> </htlml>

  12. Medium-neutrality HTML PDF TEI Stylesheet MS Word ePUB

  13. Example: XML source <?xml version="1.0" encoding="UTF-8"?> <letter> <head>Letter from De Erven F. Bohn to W. Blackwood and sons, January 22nd, 1873</head> <body> <dateline> <place>Haarlem</place> <date>22 January 1873</date> </dateline> <greeting>Dear Sirs!</greeting> <p>We beg to apply to you the kind request for sending us one week before the publication one copy of Bulwer&apos;s novel: <title>Kenelm Chillingly, His adventures and opinions</title>, which book you have in the press, for what we are inclined to pay 30 £. When it were possible to send us already now the first volume by the post; it would be yet more agreeable. Mr H.A. Kramers at Rotterdam readily will be our pledge.</p> <salute> your truly</salute> <signed>De Erven F. Bohn</signed> </body> </letter>

  14. <xsl:stylesheet> </xsl:stylesheet> <xsl:template match=“letter” ></xsl:template> <xsl:template match=“body” ></xsl:template>

  15. Getting started • Include a template that points to the root element of the XML source. XML XSLT <?xml version="1.0" encoding="UTF-8"?> <letter> <head>Letter from De Erven F. Bohn to W. Blackwood and sons, January 22nd, 1873</head> <body> ….</body> </letter> <xsl:template match=“letter"> … </xsl:template>

  16. XSLT XML Source <?xml version="1.0" encoding="UTF-8"?> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0"> <xsl:template match="letter"> </xsl:template> </xsl:stylesheet> <?xml version="1.0" encoding="UTF-8"?> <letter> … </letter> XML Result

  17. <xsl:template match="tei:lb"> <br/></xsl:template> <xsl:template match="tei:gap"> <xsl:text> [...] </xsl:text> </xsl:template>

  18. Transformation to PDF • XSL:FO (Formatting Objects) • XSL:FO creates a “Page Design” and text can be pasted into this basic layout

  19. Exchange of data Metadata Harvesting

  20. Crosswalking • Mapping and exporting metadata • For instance: TEI to MARC21 TEI//tei:titleStmt/title//tei:titleStmt/tei:title/tei:persName//tei:opener//tei:date DCdc:title dc:creatordc:date

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