On Sun 21 Sep 2014 06:38:42 Werner LEMBERG wrote: > >> A good starting point may be to implement a C/C++ library function, > >> to extract the MediaBox properties; that would open the gate to a > >> possible pdfbb request, which gtroff.exe could process internally. > > > > > > Alternatively, we could modify the existing implementation of .psbb, > > such that it will discriminate on `%!PS-Adobe-´ or `%PDF-´ as > > initial file content, then DTRT wrt parsing a `%%BoundingBox:´ or > > `/MediaBox´ record accordingly. > > > Good idea! > > > Werner
Yes, it is. Someone on the list has contacted me, with a view to writing the code, and I have provided the perl version. It is a bit more complex than psbb, which is essentially a grep for %BoundingBox in the first part of the postscript file. This is because MediaBox can appear in multiple object types in a hierarchical fashion. Unlike postscript, each page in a pdf document can be a different size. So to be sure of the correct MediaBox to use it is necessary to parse the complete document, find the page you are interested in (page 1 in the case of PDFPIC) and then search for the MediaBox in the page object or any of its ancestors. Cheers Deri
