For one of my projects I’m using Apache’s Xerces C++ XML Parser and run into this strange error:
The primary document entity could not be opened.
Took me a while to figure out that Xerces simply wants to say “File not found” here, because I was was calling parse() with the data to be parsed, while Xerces expects a file name here. Silly me.
However: Here’s how to parse an XML string using Xerces SAX parser. You need to use a MemBufInputSource: