[Inkscape-devel] Plain text PDF
bulia byak wrote:
On 5/26/06, David Christian Berg <david@...407...> wrote:
> -----------------------------------------------------------------------
> Cannot open file
>
> The filename "test.pdf" indicates that this file is of type "PDF
> document". The contents of the file indicate that the file is of type
> "plain text document". If you open this file, the file might present a
> security risk to your system.
Apparently your operating system is unaware of the fact that there can
be a valid PDF file without compression, i.e. as a plain ASCII text.
With or without compression a PDF file is always a binary file. A common
trick to force (mail) systems realize this is to add a few non-ASCII
characters in a comment at the beginning of the file. Never heard of
viewers needing this.. But if it helps someone and harms no one I guess
it is safe to add such a comment
Here's a simple patch (pick your favourite binary characters):
=====
PdfObject *PdfFile::begin_document(double version) {
Inkscape::SVGOStringStream os;
+ char bin[5]={'B'+128,'i'+128,'n'+128,'!'+128};
length = 0;
pages = new PdfXref();;
os << "%PDF-" << version << "\n";
+ os << "%" << bin << "\n";
obj_info = begin_object();
*obj_info << "<<\n";
--
Ulf