Cleanup

src/calibre/ebooks/metadata/pdf.py

@@ -8,7 +8,7 @@ from functools import partial
 
 from calibre import prints
 from calibre.constants import plugins
-from calibre.ebooks.metadata import MetaInformation, string_to_authors, authors_to_string
+from calibre.ebooks.metadata import MetaInformation, string_to_authors
 
 pdfreflow, pdfreflow_error = plugins['pdfreflow']
 
@@ -56,66 +56,10 @@ def get_metadata(stream, cover=True):
 
 get_quick_metadata = partial(get_metadata, cover=False)
 
-import cStringIO
-from threading import Thread
-
-from calibre.utils.pdftk import set_metadata as pdftk_set_metadata
-from calibre.utils.podofo import set_metadata as podofo_set_metadata, Unavailable
+from calibre.utils.podofo import set_metadata as podofo_set_metadata
 
 def set_metadata(stream, mi):
     stream.seek(0)
-    try:
     return podofo_set_metadata(stream, mi)
-    except Unavailable:
-        pass
-    try:
-        return pdftk_set_metadata(stream, mi)
-    except:
-        pass
-    set_metadata_pypdf(stream, mi)
-
-
-class MetadataWriter(Thread):
-
-    def __init__(self, out_pdf, buf):
-        self.out_pdf = out_pdf
-        self.buf = buf
-        Thread.__init__(self)
-        self.daemon = True
-
-    def run(self):
-        try:
-            self.out_pdf.write(self.buf)
-        except RuntimeError:
-            pass
-
-def set_metadata_pypdf(stream, mi):
-    # Use a StringIO object for the pdf because we will want to over
-    # write it later and if we are working on the stream directly it
-    # could cause some issues.
-
-    from pyPdf import PdfFileReader, PdfFileWriter
-    raw = cStringIO.StringIO(stream.read())
-    orig_pdf = PdfFileReader(raw)
-    title = mi.title if mi.title else orig_pdf.documentInfo.title
-    author = authors_to_string(mi.authors) if mi.authors else orig_pdf.documentInfo.author
-    out_pdf = PdfFileWriter(title=title, author=author)
-    out_str = cStringIO.StringIO()
-    writer = MetadataWriter(out_pdf, out_str)
-    for page in orig_pdf.pages:
-        out_pdf.addPage(page)
-    writer.start()
-    writer.join(10) # Wait 10 secs for writing to complete
-    out_pdf.killed = True
-    writer.join()
-    if out_pdf.killed:
-        print 'Failed to set metadata: took too long'
-        return
-
-    stream.seek(0)
-    stream.truncate()
-    out_str.seek(0)
-    stream.write(out_str.read())
-    stream.seek(0)