view commons/core/writer/SequenceListWriter.py @ 38:2c0c0a89fad7

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#
# Copyright INRA-URGI 2009-2010
# 
# This software is governed by the CeCILL license under French law and
# abiding by the rules of distribution of free software. You can use,
# modify and/ or redistribute the software under the terms of the CeCILL
# license as circulated by CEA, CNRS and INRIA at the following URL
# "http://www.cecill.info".
# 
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# modify and redistribute granted by the license, users are provided only
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# economic rights, and the successive licensors have only limited
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# software by the user in light of its specific status of free software,
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class SequenceListWriter(object):
    """
    An interface that writes a list of sequences into a file
    @ivar fileName: name of the file 
    @type fileName: string
    @ivar handle: handle to the file
    @type handle: file handle
    @ivar header: first lines of the file
    @type header: string
    """


    def __init__(self, fileName, verbosity = 0):
        """
        Constructor
        @param fileName: name of the file 
        @type fileName: string
        @param verbosity: verbosity
        @type verbosity: int
        """
        self.fileName = fileName
        self.verbosity = verbosity
        self.handle = open(self.fileName, "w")


    def __del__(self):
        """
        Destructor
        """
        self.close()
        

    def write(self):
        """
        No-op
        """
        pass
        
        
    def close(self):
        """
        Close writer
        """
        if self.handle != None:
            self.handle.close()
        
        
    def addSequence(self, sequence):
        """
        Add a sequence to the list of sequence to be written
        @param sequence: sequence to be written
        @type    sequence: class L{Sequence<Sequence>}
        """
        self.handle.write(self.getLine(sequence))


    def addElement(self, element):
        """
        Same as "addSequence"
        @param element: sequence to be written
        @type    element: class L{Sequence<Sequence>}
        """
        self.addSequence(element)