annotate commons/core/parsing/MummerParser.py @ 32:3441fe98a2ba

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author m-zytnicki
date Tue, 30 Apr 2013 14:34:10 -0400
parents 769e306b7933
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1 #
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2 # Copyright INRA-URGI 2009-2010
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3 #
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4 # This software is governed by the CeCILL license under French law and
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5 # abiding by the rules of distribution of free software. You can use,
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6 # modify and/ or redistribute the software under the terms of the CeCILL
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7 # license as circulated by CEA, CNRS and INRIA at the following URL
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8 # "http://www.cecill.info".
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9 #
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10 # As a counterpart to the access to the source code and rights to copy,
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11 # modify and redistribute granted by the license, users are provided only
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12 # with a limited warranty and the software's author, the holder of the
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13 # economic rights, and the successive licensors have only limited
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14 # liability.
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15 #
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16 # In this respect, the user's attention is drawn to the risks associated
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17 # with loading, using, modifying and/or developing or reproducing the
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18 # software by the user in light of its specific status of free software,
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19 # that may mean that it is complicated to manipulate, and that also
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20 # therefore means that it is reserved for developers and experienced
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21 # professionals having in-depth computer knowledge. Users are therefore
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22 # encouraged to load and test the software's suitability as regards their
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23 # requirements in conditions enabling the security of their systems and/or
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24 # data to be ensured and, more generally, to use and operate it in the
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25 # same conditions as regards security.
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26 #
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27 # The fact that you are presently reading this means that you have had
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28 # knowledge of the CeCILL license and that you accept its terms.
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29 #
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30 import re
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31 import sys
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32 from commons.core.parsing.MapperParser import MapperParser
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33 from SMART.Java.Python.structure.Mapping import Mapping
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34 from SMART.Java.Python.structure.SubMapping import SubMapping
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35
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36 class MummerParser(MapperParser):
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37 """A class that parses the output of Mummer format"""
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38
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39 def __init__(self, fileName, verbosity = 0):
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40 super(MummerParser, self).__init__(fileName, verbosity)
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41
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43 def __del__(self):
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44 super(MummerParser, self).__del__()
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45
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46
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47 def getFileFormats():
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48 return ["mummer"]
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49 getFileFormats = staticmethod(getFileFormats)
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50
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52 def skipFirstLines(self):
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53 pass
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56 def parseLine(self, line):
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57 mapping = Mapping()
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58
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59 subMapping = SubMapping()
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60
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61 # handle header
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62 m = re.search(r"^>\s+(\S+)\s+Reverse\s+Len\s+=\s+(\d+)$", line)
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63 if m != None:
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64 subMapping.queryInterval.setName(m.group(1))
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65 subMapping.queryInterval.setSize(int(m.group(2)))
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66 subMapping.queryInterval.setDirection(-1)
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67 else:
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68 m = re.search(r"^>\s+(\S+)\s+Len\s+=\s+(\d+)$", line)
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69 if m != None:
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70 subMapping.queryInterval.setName(m.group(1))
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71 subMapping.queryInterval.setSize(int(m.group(2)))
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72 subMapping.queryInterval.setDirection(1)
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73 else :
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74 sys.exit("Header line %d '%s' is strange in Mummer file" % (self.currentLineNb, line))
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75
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76 for line in self.handle:
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77 self.currentLineNb += 1
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78 break
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79 line = line.strip()
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80
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81 # handle line
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82 m = re.search(r"^(\w+)\s+(\d+)\s+(\d+)\s+(\d+)$", line)
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83 if m != None:
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84 subMapping.targetInterval.setName(m.group(1))
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85 subMapping.targetInterval.setStart(int(m.group(2)))
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86 subMapping.queryInterval.setStart(int(m.group(3)))
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87 subMapping.targetInterval.setSize(int(m.group(4)))
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88 else:
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89 sys.exit("Line %d '%s' is strange in Mummer file" % (self.currentLineNb, line))
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90
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91 mapping.addSubMapping(subMapping)
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92
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93 return mapping