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xmpdf 0.2.1

New features

• get_bookmarks_pdftools() gets pdf bookmark information using pdftools::pdf_toc() (#30). Note though due to poppler library limitations it can’t return page numbers that correspond to each bookmark. Hence get_bookmarks() will try to use the following helper functions in the following order:

  1. get_bookmarks_pdftk()
  2. get_bookmarks_pdftools()

Bug fixes and minor improvements

• We can again disable old bookmarks when setting new bookmarks in set_bookmarks_gs() for the newest versions of ghostscript (#59). The new approach means we could remove some GPLv3 code and have relicensed the package under the MIT license.
• Improved support for reading/writing Unicode values in non-Unicode locales (#57).
• get_bookmarks() and get_bookmarks_pdftk() no longer returns its data frame value invisibly.

xmpdf 0.1.4

• Unit tests have been adjusted to prevent a CRAN R CMD check ERROR on an M1 Mac machine running macOS 14 (#58).

xmpdf 0.1.3

Bug fixes and minor improvements

• set_docinfo_exiftool() should now losslessly write all legal datetimes (#55). set_docinfo()’s priority order has been updated to the following:

  1. set_docinfo_exiftool()
  2. set_docinfo_gs()
  3. set_docinfo_pdftk()

• Unit tests have been adjusted to prevent CRAN R CMD check ERRORs on certain CRAN platforms that don’t have ghostscript installed or are ran in a non-Unicode locale (#56).

xmpdf 0.1.1

Initial features

• cat_bookmarks() concatenates a list of bookmarks into a single bookmarks data frame while updating the page numbers. Useful if wanting to concatenate multiple pdf files together and would like to preserve the bookmarks information.

• get_bookmarks() returns a data frame with pdf bookmarks information. get_bookmarks() will try to use the following helper functions in the following order:

  1. get_bookmarks_pdftk() which wraps pdftk command-line tool

• set_bookmarks() sets (replaces) pdf bookmarks information. set_bookmarks() will try to use the following helper functions in the following order:

  1. set_bookmarks_gs() which wraps ghostscript command-line tool
  2. set_bookmarks_pdftk() which wraps pdftk command-line tool

• docinfo() provides an {R6} object to represent pdf documentation info entries.

• as_docinfo() can coerce objects into docinfo() objects. In particular there is an as_docinfo.xmp() method to coerce xmp() objects.

• get_docinfo() reads in pdf documentation info entries from pdf file(s). get_docinfo() will try to use the following helper functions in the following order:

  1. get_docinfo_pdftk() which wraps pdftk command-line tool
  2. get_docinfo_exiftool() which wraps exiftool command-line tool
  3. get_docinfo_pdftools() which wraps pdftools::pdf_info()

• set_docinfo() sets pdf documentation info entries to a pdf file. set_docinfo() will try to use the following helper functions in the following order:

  1. set_docinfo_gs() which wraps ghostscript command-line tool
  2. set_docinfo_pdftk() which wraps pdftk command-line tool
  3. set_docinfo_exiftool() which wraps exiftool command-line tool

• xmp() provides an {R6} object to represent xmp metadata.

  • as_lang_alt() supports “language alternative” XMP tags.

• as_xmp() can coerce objects into xmp() objects. In particular there is an as_xmp.docinfo() method to coerce docinfo() objects.

• get_xmp() reads in xmp metadata from media file(s). get_xmp() will try to use the following helper functions in the following order:

  1. get_xmp_exiftool() which wraps exiftool command-line tool

• set_xmp() sets xmp metadata in media file(s). set_xmp() will try to use the following helper functions in the following order:

  1. set_xmp_exiftool() which wraps exiftool command-line tool

• cat_pages() concatenates (pdf) file(s) into a single output pdf. cat_pages() will try to use the following helper functions in the following order:

  1. cat_pages_qpdf() which wraps qpdf::pdf_combine()
  2. cat_pages_pdftk() which wraps pdftk command-line tool
  3. cat_pages_gs() which wraps ghostscript command-line tool

• n_pages() returns the number of pages in the (pdf) file(s). n_pages() will try to use the following helper functions in the following order:

  1. n_pages_qpdf() which wraps qpdf::pdf_length()
  2. n_pages_exiftool() which wraps exiftool command-line tool
  3. n_pages_pdftk() which wraps pdftk command-line tool
  4. n_pages_gs() which wraps ghostscript command-line tool

• The following functions detect support for various higher-level features:

  • supports_get_bookmarks()
  • supports_set_bookmarks()
  • supports_get_docinfo()
  • supports_set_docinfo()
  • supports_get_xmp()
  • supports_set_xmp()
  • supports_n_pages()

• The following functions detect support for various command-line tools needed for some lower-level helper functions:

  • supports_exiftool() detects support for exiftool
  • supports_gs() detects support for ghostscript
  • supports_pdftk() detects support for pdftk

• enable_feature_message() returns a character vector with the information needed to install the requested feature. Formatted for use with rlang::abort(), rlang::warn(), or rlang::inform().

• The spdx_licenses data set contains the SPDX License List.

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.