I am writing a script that parses an internet site (maya.tase.co.il) for links, downloads pdf file and merges them. It works mostly, but merging gives me different kinds of errors depending on the file. I cant seem to figure out why. I cut out the relevant code and built a test only for two specific files that are causing a problem. The script uses pypdf, but I am willing to try anything that works. Some files are encrypted, some are not.
def is_incry(pdf):
from pyPdf import PdfFileWriter, PdfFileReader
input=PdfFileReader(pdf)
try:
input.getNumPages()
return input
except:
input.decrypt("")
return input
def merg_pdf(to_keep,to_lose):
import os
from pyPdf import PdfFileWriter, PdfFileReader
if os.path.exists(to_keep):
in1=file(to_keep, "rb")
in2=file(to_lose, "rb")
input1 = is_incry(in1)
input2 = is_incry(in2)
output = PdfFileWriter()
loop1=input1.getNumPages()
for i in range(0,loop1):
output.addPage(input1.getPage(i))#
loop2=input2.getNumPages()
for i in range(0,loop2):
output.addPage(input2.getPage(i))#
outputStream = file("document-output.pdf", "wb")
output.write(outputStream)
outputStream.close()
pdflen=loop1+loop2
in1.close()
in2.close()
os.remove(to_lose)
os.remove(to_keep)
os.rename("document-output.pdf",to_keep)
else:
os.rename(to_lose,to_keep)
in1=file(to_keep, "rb")
input1 = PdfFileReader(in1)
try:
pdflen=input1.getNumPages()
except:
input1.decrypt("")
pdflen=input1.getNumPages()
in1.close()
#input1.close()
return pdflen
def test():
import urllib
urllib.urlretrieve ('http://mayafiles.tase.co.il/RPdf/487001-488000/P487028-01.pdf', 'temp1.pdf')
urllib.urlretrieve ('http://mayafiles.tase.co.il/RPdf/488001-489000/P488170-00.pdf', 'temp2.pdf')
merg_pdf('temp1.pdf','temp2.pdf')
test()
I thank anyone that even took the time to read this. Al.
I once wrote a complex PDF generation/merging stuff which I have now open-sourced.
You can have a look at it: https://github.com/becomingGuru/nikecup/blob/master/reg/models.py#L71
def merge_pdf(self):
from pyPdf import PdfFileReader,PdfFileWriter
pdf_file = file_names['main_pdf']%settings.MEDIA_ROOT
pdf_obj = PdfFileReader(open(pdf_file))
values_page = PdfFileReader(open(self.make_pdf())).getPage(0)
mergepage = pdf_obj.pages[0]
mergepage.mergePage(values_page)
signed_pdf = PdfFileWriter()
for page in pdf_obj.pages:
signed_pdf.addPage(page)
signed_pdf_name = file_names['dl_done']%(settings.MEDIA_ROOT,self.phash)
signed_pdf_file = open(signed_pdf_name,mode='wb')
signed_pdf.write(signed_pdf_file)
signed_pdf_file.close()
return signed_pdf_name
It then works like a charm. Hope it helps.