convertxlsform

A complete rewrite. The package writes Word and PDF paper versions of an XLSForm through a new API, a terminal interface and one document model that both outputs share.

New features

• convertxlsform() writes a Word document (.docx) by default. format = "pdf" or format = c("docx", "pdf") also writes a PDF. The output location, format and overwrite rules follow from the arguments, and the function returns the paths invisibly.
• PDF output converts the Word document with LibreOffice. Microsoft Word is used through the doconv package when LibreOffice is not found. docx_to_pdf() and has_libreoffice() are exported.
• cli() runs a conversion from a terminal, for example Rscript -e 'convertxlsform::cli()' form.xlsx --format pdf. Scripts can use quit(status = convertxlsform::cli()) to get the exit status.
• xlsform_outline() returns the numbered form as a data frame, for checking a form before conversion.
• xlsform_languages() lists the languages in a form and marks the default.
• Language columns are read from label::English (en), label::en and label::English. The lang argument accepts a code, a name or the full suffix. A blank translated cell falls back to the plain column, then to the default language. Headers with a common language name only, such as label::French, also match their ISO 639-1 code (lang = "fr").
• Skip logic, constraints and choice filters are written in plain language. Expressions that cannot be read are shown as written.
• Connective phrases such as "Ask if" come from built-in English and French tables. The strings option replaces any of them for another language.
• Paper layouts for each question type: single and multiple choice, rank, long lists as code boxes, write-in boxes, numeric, date and time formats, geographic and media questions, and acknowledgments.
• Groups and repeat groups, with nested numbering (nested_serial_numbers) and blank copies of repeats (repeat_copies).