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Implement PDF support when not using AppEngine #2

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merged 2 commits into from
Dec 18, 2012
Merged

Implement PDF support when not using AppEngine #2

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bd8b93d
Use ImageMagick to do PDF->png conversion when outside of AppEngine.
rburhum Nov 27, 2012
ded3c4d
Remove unnecessary references in pdf code
rburhum Nov 27, 2012
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26 changes: 25 additions & 1 deletion geocamUtil/pdf.py
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Original file line number Original file line Diff line number Diff line change
Expand Up @@ -4,6 +4,8 @@
# All Rights Reserved. # All Rights Reserved.
# __END_LICENSE__ # __END_LICENSE__


import tempfile
import os


class PdfConversionError(Exception): class PdfConversionError(Exception):
pass pass
Expand All @@ -18,4 +20,26 @@ def convertPdf(data,
Pass in the raw binary PDF data. Returns the raw binary image data Pass in the raw binary PDF data. Returns the raw binary image data
result after rasterization. result after rasterization.
""" """
raise NotImplementedError()
#write to temporary pdf file
tempInputFile = tempfile.NamedTemporaryFile(suffix='.pdf', delete=False)
tempInputFile.seek(0)
tempInputFile.write(data)
tempInputFile.flush()

outputFileName = tempInputFile.name.replace('.pdf', '.png')

ret = os.system('convert -flatten %s %s > /dev/null' % (tempInputFile.name, outputFileName))

os.remove(tempInputFile.name)

if ret != 0 or os.path.isfile(outputFileName) == False:
raise PdfConversionError('Error found while converting pdf')

outputFile = open(outputFileName, 'r')
outputFileData = outputFile.read()

outputFile.close()
os.remove(outputFileName)

return outputFileData