sbsv2/raptor/python/dos2unix.py
author lorewang
Wed, 24 Nov 2010 14:12:23 +0800
changeset 706 5221386d044b
parent 590 360bd6b35136
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#
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# Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
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# All rights reserved.
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# This component and the accompanying materials are made available
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# under the terms of the License "Eclipse Public License v1.0"
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# which accompanies this distribution, and is available
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# at the URL "http://www.eclipse.org/legal/epl-v10.html".
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#
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# Initial Contributors:
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# Nokia Corporation - initial contribution.
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#
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# Contributors:
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#
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# Description: 
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# dos2unix - python version
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# This module converts file from dos to unix i.e. replaces Dos/Windows EOL (CRLF) with Unix EOL (LF).
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# example usage:
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# dos2unix.py windowsFile.txt
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#
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import os
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import re
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import sys
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import stat
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#------------------------------------------------------------------------------
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# Converts string from dos to unix i.e. replaces CRLF with LF as a line terminator (EOL)
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#------------------------------------------------------------------------------
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def convertDos2Unix(inputString):
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    regExp = re.compile("\r\n|\n|\r")
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    return regExp.sub("\n",inputString)
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#------------------------------------------------------------------------------
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# Validates input
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#------------------------------------------------------------------------------
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def validateInput(argv):
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    if not(len(argv) > 1):
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       print "Error No parameter given: fileName to convert."
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       sys.exit();
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#------------------------------------------------------------------------------
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# Reads input file
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#------------------------------------------------------------------------------
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def readInputFile(fileName):
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    inputFile = open(fileName, 'r')
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    # read file content
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    originalFileContent = inputFile.read()
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    inputFile.close()
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    return originalFileContent
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#------------------------------------------------------------------------------
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# Writes string to given file (in binary mode)
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#------------------------------------------------------------------------------
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def writeToBinaryFile(string,fileName):
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    os.chmod(fileName, stat.S_IRWXU)
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    outputFile = open(fileName, 'wb')
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    outputFile.write(string)
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    outputFile.close()
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# Main script
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#------------------------------------------------------------------------------
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# Coverts dos/windows EOL to UNIX EOL (CRLF->LF) in given file
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#------------------------------------------------------------------------------
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def dos2unix(fileName):
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    originalFileContent = readInputFile(fileName)
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    convertedFileContent = convertDos2Unix(originalFileContent)
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    writeToBinaryFile(convertedFileContent,fileName)
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