Close a PDF document

Releases the underlying PDFium handle. Idempotent — calling pdf_doc_close() on an already-closed document is a no-op. The finalizer registered at pdf_doc_open() also calls this when the R object is garbage-collected, but explicit close is recommended when handling many large documents or when a subsequent operation needs to delete the source file (relevant on Windows).

Usage

pdf_doc_close(doc)

Arguments

doc

A pdfium_doc produced by pdf_doc_open().

Value

Invisibly returns doc with its underlying pointer marked closed.