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POWriting metadata to a pdf using pyobjc
 

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    <p>I'm trying to write metadata to a pdf file using the following python code:</p> <pre><code>from Foundation import * from Quartz import * url = NSURL.fileURLWithPath_("test.pdf") pdfdoc = PDFDocument.alloc().initWithURL_(url) assert pdfdoc, "failed to create document" print "reading pdf file" attrs = {} attrs[PDFDocumentTitleAttribute] = "THIS IS THE TITLE" attrs[PDFDocumentAuthorAttribute] = "A. Author and B. Author" PDFDocumentTitleAttribute = "test" pdfdoc.setDocumentAttributes_(attrs) pdfdoc.writeToFile_("mynewfile.pdf") print "pdf made" </code></pre> <p>This appears to work fine (no errors to the consoled), however when I examine the metadata of the file it is as follows:</p> <pre><code>PdfID0: 242b7e252f1d3fdd89b35751b3f72d3 PdfID1: 242b7e252f1d3fdd89b35751b3f72d3 NumberOfPages: 4 </code></pre> <p>and the original file had the following metadata:</p> <pre><code>InfoKey: Creator InfoValue: PScript5.dll Version 5.2.2 InfoKey: Title InfoValue: Microsoft Word - PROGRESS ON THE GABION HOUSE Compressed.doc InfoKey: Producer InfoValue: GPL Ghostscript 8.15 InfoKey: Author InfoValue: PWK InfoKey: ModDate InfoValue: D:20101021193627-05'00' InfoKey: CreationDate InfoValue: D:20101008152350Z PdfID0: d5fd6d3960122ba72117db6c4d46cefa PdfID1: 24bade63285c641b11a8248ada9f19 NumberOfPages: 4 </code></pre> <p>So the problems are, it is not appending the metadata, and it is clearing the previous metadata structure. What do I need to do to get this to work? My objective is to append metadata that reference management systems can import.</p>
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