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pgrdf changelog

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v1.8.0 (2023-11-03)

Adds support for dcterms:tableOfContents.

BUGFIX

In rare situations a dcterms:creator contains no pgterms:agent, resulting in a 0 value for Agent IDs. The issue is with a few RDFs where author data is instead added to an associated marcrel node.

When this happens, the Agent ID for a creator can be extracted from its rdf:resource attribute.

BREAKING CHANGES

Rename various RDF and Ebook struct fields to align with the naming used in the official Project Gutenberg gitenberg Python tooling:

  • SrcPublicationInfo -> PublicationNote
  • Edition -> EditionNote
  • Credits -> ProductionNotes
  • SourceDescription -> PhysicalDescriptionNote
  • LOC -> LCCN

v1.7.0 (2023-10-15)

Many of the previously added marc tags have now been made available in the Ebook struct, for example, MARC 546 (language notes), MARC 250 (edition), and MARC 904 (source links).

BREAKING CHANGES

Various tags in the RDFs may have multiple entries but they were previously handled as single tags. The un/marshalers have been updated to handle these and the Ebook struct updated to support slices where needed. Some fields have also been renamed.

  • OtherTitles has been renamed to AlternateTitles.
  • Language is now a slice named Languages and includes only an alpha 2 or alpha 3 language code string, meaning the dialect and language notes have been moved to their own struct fields.
  • BookCoverFilename is now a slice named BookCovers.
  • Note is now a slice named Notes.
  • WebPage in Creator is now a slice named WebPages.

v1.6.1 (2023-09-30)

  • Handle the case when an RDF uses Various in marc906 instead of a year number.

v1.6.0 (2023-09-05)

  • Use a custom type for the BookType for all know types in the PG collection.
  • Improve unmarshaller to handle both CR and LF for dcterms:title/dcterms:alternative.

v1.5.0 (2022-11-27)

  • Renamed MarcRelatorCode to MarcRelator.
  • Added the remaining marcrel tags:
    • marcrel:pbl, marcrel:adp, marcrel:pht, etc.
    • Matching what are found in the current PG collection.
    • Which also means supporting empty tags, e.g. <marcrel:adp rdf:resource="2009/agents/1" />.
  • The order of the marshalled RDF XML tags has been change to make it a little easier for humans to find information about the work.
  • The RDF marshaller structs now have some useful comments.
  • General cleanup and improvements related to the above topics.

v1.4.0 (2022-11-26)

IMPORTANT: this release contains breaking changes!

  • pgrdf.ToRDF() has been renamed to WriteRDF()
  • pgrdf.NewEbook() has been renamed to ReadRDF()
  • The Language field on Ebook has changed from a string type to pgrdf.Language.

Additional changes:

  • RDF unmarshalling now processes all MARC codes used by PG
    • that's all codes found in the 202-11-05 rdf_files.tar.bz2 archive
  • RDF marshalling now includes:
    • all missing tags, such as the contributors, and the new marc tags.
    • the generated XML is now tested against the pg11.rdf sample file.
  • WriteRDF function now includes the XML declaration header and fixes the self-closing tags.
  • Updated the sample RDF with more fake data
    • its number was also changed to a value PG will never use

v1.3.0 (2022-03-05)

  • Extract MARC Relators data for compilers (marcrel:com)
  • Extract MARC Relators data for contributors (marcrel:ctb)
  • Extract book Series from pgterms:marc440

v1.2.0 (2022-03-05)

  • Extract MARC Relators (marcrel) data:
    • editors (edt), illustrators (ill), and translators (trl).
    • adding them as creators in the JSON output.
    • this adds a new role field to the Creator object.
  • Extract marc901 book cover filename.
  • Extract marc907 language locale.
    • appending the locale to the language field, e.g. "language": "en-GB".
  • Refactoring of ebook.go, in particular mapUnmarshalled().

v1.1.0 (2022-01-08)

  • Extract published year from the marc906 tag.

v1.0.1 (2021-06-12)

  • Add missing LICENSE file

v1.0.0 (2021-04-17)

  • First release.