Mercurial > repos > yufei-luo > s_mart
annotate smart_toolShed/commons/core/writer/SamWriter.py @ 0:e0f8dcca02ed
Uploaded S-MART tool. A toolbox manages RNA-Seq and ChIP-Seq data.
author | yufei-luo |
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date | Thu, 17 Jan 2013 10:52:14 -0500 |
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Uploaded S-MART tool. A toolbox manages RNA-Seq and ChIP-Seq data.
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1 # |
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Uploaded S-MART tool. A toolbox manages RNA-Seq and ChIP-Seq data.
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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 os |
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31 import random |
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32 from commons.core.writer.TranscriptListWriter import TranscriptListWriter |
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33 |
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34 |
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35 class SamWriter(TranscriptListWriter): |
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36 """ |
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37 A class that writes a transcript list into a file with SAM format |
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38 @ivar sizes: estimated sizes of the chromosomes |
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39 @type sizes: dict of string to int |
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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 super(SamWriter, self).__init__(fileName, verbosity) |
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52 self.sizes = {} |
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53 self.headerWritten = False |
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54 |
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55 |
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56 def close(self): |
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57 """ |
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58 Close file (trick to add header) |
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59 """ |
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60 super(SamWriter, self).close() |
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61 if self.headerWritten: |
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62 return |
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63 tmpFileName = "tmpFile%d.sam" % (random.randint(0, 100000)) |
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64 tmpHandle = open(tmpFileName, "w") |
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65 for chromosome, size in self.sizes.iteritems(): |
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66 tmpHandle.write("@SQ\tSN:%s\tLN:%d\n" % (chromosome, size)) |
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67 self.handle = open(self.fileName) |
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68 for line in self.handle: |
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69 tmpHandle.write(line) |
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70 tmpHandle.close() |
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71 self.handle.close() |
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72 os.rename(tmpFileName, self.fileName) |
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73 self.headerWritten = True |
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74 |
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75 |
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76 @staticmethod |
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77 def getFileFormats(): |
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78 """ |
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79 Get the format of the file |
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80 """ |
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81 return ["sam"] |
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82 |
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83 |
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84 @staticmethod |
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85 def getExtension(): |
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86 """ |
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87 Get the usual extension for the file |
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88 """ |
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89 return "sam" |
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90 |
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91 |
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92 def printTranscript(self, transcript): |
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93 """ |
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94 Export the given transcript with GBrowse format |
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95 @param transcript: transcript to be printed |
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96 @type transcript: class L{Transcript<Transcript>} |
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97 @return: a string |
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98 """ |
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99 self.sizes[transcript.getChromosome()] = max(transcript.getEnd(), self.sizes.get(transcript.getChromosome(), 0)) |
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100 return transcript.printSam() |
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101 |