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54 lines
1.5 KiB
Python
54 lines
1.5 KiB
Python
import subprocess
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import os
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def user_printing_path(instance, filename):
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"""
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Defines the path where will be uploaded the files
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Currently MEDIA_ROOT/printings/user_<id>/<filename>
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"""
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# File will be uploaded to MEDIA_ROOT/printings/user_<id>/<filename>
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return 'printings/user_{0}/{1}'.format(instance.user.id, filename)
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def pdfinfo(file_path):
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"""
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Uses pdfinfo to extract the PDF meta information.
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Returns metainfo in a dictionary.
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requires poppler-utils
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"""
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def _extract(row):
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"""Extracts the right hand value from a : delimited row"""
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row=row.decode()
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return row.split(':', 1)[1].strip()
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output = {}
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labels = ['Title', 'Author', 'Creator', 'Producer', 'CreationDate', 'ModDate',
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'Tagged', 'Pages', 'Encrypted', 'Page size',
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'File size', 'Optimized', 'PDF version']
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cmd_output = subprocess.check_output(['/usr/bin/pdfinfo', file_path])
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for line in cmd_output.splitlines():
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for label in labels:
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if label in line.decode():
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output[label] = _extract(line)
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return output
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def pdfbook(file_path):
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"""
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Creates a booklet from a pdf
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requires texlive-extra-utils
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"""
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_dir = os.path.dirname(file_path)
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_fname = os.path.basename(file_path)
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newfile = os.path.join(_dir, "pdfbook_%s" % (_fname,))
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check_output(
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['/usr/bin/pdfbook',
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'--short-edge',
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file_path,
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'-o', newfile,
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])
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return newfile
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