Get CGPDFDocumentRef name of document

问题:

Is it possible to retrieve the name of a document from a CGPDFDocumentRef

回答1:

By "name of a document", do you mean the document filename or title?

If the document "title" is included in the metadata it can be retrieved like this:

    char *titleKey = "Title";
    CGPDFStringRef titleStringRef;

    CGPDFDictionaryRef info = CGPDFDocumentGetInfo(myDocumentRef);
    CGPDFDictionaryGetString(info, titleKey, &titleStringRef);
    const unsigned char *titleCstring = CGPDFStringGetBytePtr(titleStringRef);

    printf("title: %s", titleCstring);

The other keys are listed in section 10.2 of the PDF 1.7 specification: Adobe PDF Reference Archives