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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 from commons.core.writer.TranscriptListWriter import TranscriptListWriter
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31
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32
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33 class EmblWriter(TranscriptListWriter):
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34 """
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35 A class that writes a transcript list into several files with EMBL format
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36 @ivar fileName: name of the file
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37 @type fileName: string
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38 @ivar handle: handle to the file
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39 @type handle: file handle
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40 """
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41
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42
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43 def __init__(self, fileName, verbosity = 0):
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44 """
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45 Constructor
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46 @param fileName: name of the file
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47 @type fileName: string
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48 @param verbosity: verbosity
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49 @type verbosity: int
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50 """
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51 self.fileName = fileName
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52 self.verbosity = verbosity
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53 self.handles = {}
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54 self.handle = None
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55
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56
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57 def __del__(self):
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58 """
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59 Destructor
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60 Trick to append the sequences at the end of the EMBL files
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61 """
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62 handle = open(self.sequenceFileName)
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63 currentHandle = None
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64 for line in handle:
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65 if line[0] == ">":
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66 chromosome = line[1:].strip()
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67 if chromosome in self.handles:
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68 currentHandle = self.handles[chromosome]
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69 else:
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70 currentHandle = None
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71 else:
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72 if currentHandle != None:
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73 currentHandle.write(line)
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74 handle.close()
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75 for handle in self.handles.values():
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76 handle.close()
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77
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78
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79 @staticmethod
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80 def getFileFormats():
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81 """
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82 Get the format of the file
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83 """
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84 return ["embl"]
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85
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86
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87 @staticmethod
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88 def getExtension():
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89 """
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90 Get the usual extension for the file
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91 """
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92 return "embl"
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93
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94
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95 def addTranscript(self, transcript):
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96 """
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97 Add a transcript to the list of transcripts to be written
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98 @param transcript: transcript to be written
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99 @type transcript: class L{Transcript<Transcript>}
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100 """
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101 chromosome = transcript.getChromosome()
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102 if chromosome not in self.handles:
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103 self.handles[chromosome] = open("%s%s.embl" % (self.fileName[:-len(".embl")], chromosome.title()), "w")
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104 self.handles[chromosome].write(self.printTranscript(transcript))
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105
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106
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107 def printTranscript(self, transcript):
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108 """
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109 Export the given transcript with GFF2 format
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110 @param transcript: transcript to be printed
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111 @type transcript: class L{Transcript<Transcript>}
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112 @return: a string
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113 """
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114 return transcript.printEmbl()
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115
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116
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