ENH: Support reading link annotations

[tiarno]

I convert an html file to pdf with wkhtmltopdf and cannot find the named destinations in using PyPDF2.

The links in the pdf work and the destinations exist, but the structure is different from what I'm used to. Here is a link:

11 0 obj
<<
/Type /Annot
/Subtype /Link
/Rect [32.8200000  767.929999  51.5700000  779.179999 ]
/Border [0 0 0]
/Dest /file#3a##2fmytesting.htm#23myanchor
>>

And the destinations seem to be a bare list like this:

12 0 obj
<<
/__WKANCHOR_2 8 0 R
/__WKANCHOR_4 9 0 R
/file#3a#2fmytesting.htm#23myanchor 10 0 R
>>
endobj

Is there a way to find the destinations with PyPDF2?
The namedDestinations property returns an empty dict.
I've tried find to find the info from the resolvedObjects dict but so far with no luck.

thanks.

[MichaelKim0407]

Please have a look at my patch: SelfHacked@3415d60

It probably only works with PDFs generated using wkhtmltopdf (haven't tested with other PDFs), however that's only what I need

[tiarno]

thanks, that looks good but I'm sorry it will be awhile before I can test it out. The pdfs generated by wkhtmltopdf are the only kind I had trouble parsing. Thanks for your work and I'll let you know once I'm able to try it out.

[tiarno]

With your patch I could read the namedDestinations from the wkhtmltopdf-created file.

>>> from PyPDF2 import PdfFileReader
>>> pdf = PdfFileReader('mytest.pdf')
>>> pdf.namedDestinations
{'/#c0K#dc#03#d2w#fe#8cLYa#ca#cf#d00m#d2#ca#d3#94': {'/Title': 
'/#c0K#dc#03#d2w#fe#8cLYa#ca#cf#d00m#d2#ca#d3#94', '/Page': 14, '/Type': '/XYZ', '/Left': 33, '/Top': 
142.5, '/Zoom': 0}, '/__WKANCHOR_a0': {'/Title': '/__WKANCHOR_a0', 
etc. 

[MartinThoma]

MCVE: Code + PDF

Example file: wiki-pdf.pdf

>>> from PyPDF2 import PdfReader
>>> reader = PdfReader("wiki-pdf.pdf")
>>> reader.named_destinations
{}

Expected non-empty dict

[MartinThoma]

/Type /Annot
/Subtype /Link

is not a named destination, but a link annotation (page 622 of the 1.7 standard - "Link Annotations")

A named destination is /Names or /Dests.