philiprehberger-csv_builder

https://github.com/philiprehberger/rb-csv-builder

Build CSV files from record collections using a declarative DSL with column definitions, custom transforms, filtering, sorting, pagination via limit/offset, computed footer rows, row numbers, streaming output, custom delimiters and line separators, TSV/PSV shorthands, row validation, header transforms, total rows, append-to-file support, and custom empty-value placeholders.