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20
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1 #!/usr/bin/env python
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2
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3 from __future__ import print_function
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4
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5 import json
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6 import optparse
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7 import os.path
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8 import sys
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9
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10 from filters import filter_file
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11
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12
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13 def __main__():
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14 # Parse Command Line
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15 parser = optparse.OptionParser()
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16 parser.add_option('-i', '--input', dest='input', default=None,
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17 help='Input file for filtering')
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18 parser.add_option('-j', '--jsonfile', dest='jsonfile', default=None,
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19 help='JSON array of filter specifications')
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20 parser.add_option('-o', '--output', dest='output', default=None,
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21 help='Output file for query results')
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22 parser.add_option('-v', '--verbose', dest='verbose', default=False,
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23 action='store_true',
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24 help='verbose')
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25 (options, args) = parser.parse_args()
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26
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27 if options.input is not None:
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28 try:
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29 inputPath = os.path.abspath(options.input)
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30 inputFile = open(inputPath, 'r')
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31 except Exception as e:
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32 print("failed: %s" % e, file=sys.stderr)
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33 exit(3)
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34 else:
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35 inputFile = sys.stdin
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36
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37 if options.output is not None:
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38 try:
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39 outputPath = os.path.abspath(options.output)
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40 outputFile = open(outputPath, 'w')
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41 except Exception as e:
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42 print("failed: %s" % e, file=sys.stderr)
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43 exit(3)
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44 else:
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45 outputFile = sys.stdout
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46
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47 filters = None
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48 if options.jsonfile:
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49 try:
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50 fh = open(options.jsonfile)
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51 filters = json.load(fh)
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52 except Exception as exc:
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53 print("Error: %s" % exc, file=sys.stderr)
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54
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55 if options.verbose and filters:
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56 for f in filters:
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57 print('%s %s' % (f['filter'],
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58 ', '.join(
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59 ['%s: %s' % (k, f[k])
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60 for k in set(f.keys()) - set(['filter'])])),
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61 file=sys.stdout)
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62
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63 try:
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64 filter_file(inputFile, outputFile, filters=filters)
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65 except Exception as exc:
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66 print("Error: %s" % exc, file=sys.stderr)
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67 exit(1)
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68
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69
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70 if __name__ == "__main__":
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71 __main__()
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