On 25/06/2013 17:15, jyoun...@kc.rr.com wrote:
Thank you Rusi and Christian!
So it sounds like I should read the pdf data in as binary:
--------------------
import os
pdfPath = '~/Desktop/test.pdf'
colorlistData = ''
with open(os.path.expanduser(pdfPath), 'rb') as f:
for i in f:
if 'XYZ:colorList' in i:
colorlistData = i.split('XYZ:colorList')[1]
break
print(colorlistData)
--------------------
This gives me the error:
TypeError: Type str doesn't support the buffer API
I admit I know nothing about binary, except it's ones and zeroes. Is there a way to read
it in as binary, convert it to ascii/unicode, and then somehow split it by newline
characters so that I can pull the appropriate metadata lines out? For example,
XYZ:colorList="DarkBlue,Yellow"
In Python 2, string literals like '' are by default bytestrings. If you
want a Unicode string you need to add the prefix u, so u''.
In Python 3, string literals like '' are by default Unicode. If you
want a bytestring you need to add the prefix b, so b''.
Python 2 was lax when mixing bytestrings with Unicode strings.
Python 3, on the other hand, insists that you know the difference: is
it text (Unicode) or binary data (bytestring)?
Thanks!
Jay
--
Most of the PDF objects are therefore not encoded. It is, however,
possible to include a PDF into another PDF and to encode it, but that's
a rare case. Therefore the metadata can usually be read in text mode.
However, to correctly find all objects, the xref-table indexes offsets
into the PDF. It must be treated binary in any case, and that's the
funny reason for the first 3 characters of the PDF - they must include
characters with the 8th bit set, such that FTP applications treat it as
binary.
Christian
--
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