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#!python
##############################################################################
#
# vba_extract - A simple utility to extract a vbaProject.bin binary from an
# Excel 2007+ xlsm file for insertion into an XlsxWriter file.
#
# Copyright 2013-2020, John McNamara, jmcnamara@cpan.org
#
import sys
from zipfile import ZipFile
from zipfile import BadZipfile
# The VBA project file we want to extract.
vba_filename = 'vbaProject.bin'
# Get the xlsm file name from the commandline.
if len(sys.argv) > 1:
xlsm_file = sys.argv[1]
else:
print("\nUtility to extract a vbaProject.bin binary from an Excel 2007+ "
"xlsm macro file for insertion into an XlsxWriter file."
"\n"
"See: https://xlsxwriter.readthedocs.io/working_with_macros.html\n"
"\n"
"Usage: vba_extract file.xlsm\n")
exit()
try:
# Open the Excel xlsm file as a zip file.
xlsm_zip = ZipFile(xlsm_file, 'r')
# Read the xl/vbaProject.bin file.
vba_data = xlsm_zip.read('xl/' + vba_filename)
# Write the vba data to a local file.
vba_file = open(vba_filename, "wb")
vba_file.write(vba_data)
vba_file.close()
except IOError as e:
print("File error: %s" % str(e))
exit()
except KeyError as e:
# Usually when there isn't a xl/vbaProject.bin member in the file.
print("File error: %s" % str(e))
print("File may not be an Excel xlsm macro file: '%s'" % xlsm_file)
exit()
except BadZipfile as e:
# Usually if the file is an xls file and not an xlsm file.
print("File error: %s: '%s'" % (str(e), xlsm_file))
print("File may not be an Excel xlsm macro file.")
exit()
except Exception as e:
# Catch any other exceptions.
print("File error: %s" % str(e))
exit()
print("Extracted: %s" % vba_filename)
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