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annotate python/gview.py @ 688:ad8146c60c4d

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author Jeff Hammel <k0scist@gmail.com>
date Mon, 02 Jun 2014 11:21:46 -0700
parents 34af6d5ac73c
children 5e8d3f68a997
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1 #!/usr/bin/env python
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2 # -*- coding: utf-8 -*-
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3
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4 """
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5 view graphviz files
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6
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7 http://www.graphviz.org/
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8 """
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9
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10 # imports
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11 import argparse
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12 import os
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13 import subprocess
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14 import sys
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15 import tempfile
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16
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17 __all__ = ['main']
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18 string = (str, unicode)
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19
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20 class Parser(argparse.ArgumentParser):
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21 """CLI option parser"""
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22 def __init__(self):
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23 argparse.ArgumentParser.__init__(self, description=__doc__)
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24 self.add_argument('input',
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25 help='graphviz file to view')
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26 self.add_argument('-o', '--output', dest='output',
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27 help="path to save to")
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28 self.add_argument('-e', '--program', dest='program',
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29 default='fdp',
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30 help="GraphViz program to invoke [DEFAULT: %(default)s]")
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31 self.add_argument('-v', '--view', dest='viewer', default='feh',
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32 help="viewer")
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33
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34
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35 def main(args=sys.argv[1:]):
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36 """CLI"""
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37
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38 # parse command line
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39 parser = Parser()
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40 options = parser.parse_args(args)
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41
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42 #
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43 assert os.path.exists(options.input)
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44 output = options.output or tempfile.mktemp(suffix='.png')
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45
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46 command = [options.program,
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47 options.input,
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48 '-Tpng',
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49 '-o', output]
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50 subprocess.check_call(command)
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51 assert os.path.exists(output)
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52
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53 try:
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54 if options.viewer:
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55 subprocess.call([options.viewer, output])
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56 finally:
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57 if not options.output:
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58 os.remove(output)
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61 if __name__ == '__main__':
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62 main()
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