55 lines
1.9 KiB
Python
55 lines
1.9 KiB
Python
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"""RedundantImportDetector.py
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Discover redundant java imports using brute force.
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Requires Python 2.3"""
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import os, sys, re
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from glob import glob
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reportFile = file("RedundantImports.txt", 'w')
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startDir = 'D:\\aaa-TIJ4\\code'
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# Regular expression to find the block of import statements:
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findImports = re.compile("\n(?:import .*?\n)+")
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baseDir = os.path.abspath(".")
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print "basDir:", baseDir
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def main():
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for javaFile in glob("*.java") + glob("**/*.java"):
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print javaFile
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checkImports(os.path.join(baseDir, javaFile))
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def checkImports(javaFile):
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java = file(javaFile).read()
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imports = findImports.search(java)
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if imports:
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imports = [f for f in imports.group(0).split('\n') if f != '']
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fileParts = findImports.split(java)
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assert len(fileParts) == 2
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for mutated in mutateImports(imports):
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file(javaFile, 'w').write(fileParts[0] + mutated + fileParts[1])
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print "changing to", os.path.dirname(javaFile)
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os.chdir(os.path.dirname(javaFile))
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if os.system("javac " + os.path.basename(javaFile)) == 0:
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print >>reportFile, javaFile + "\n" + mutated
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redundantRemoved = "\n".join(
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[m for m in mutated.split("\n")
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if not m.startswith("//")])
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print >>reportFile, redundantRemoved
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file(javaFile, 'w').write(fileParts[0] +
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redundantRemoved + fileParts[1])
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return # No further attempts
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file(javaFile, 'w').write(java) # Restore original file
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def mutateImports(imports):
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'''Generates different versions of imports, each with a
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different line commented out'''
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for i in range(len(imports)):
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mutated = imports[:]
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mutated[i] = '//' + mutated[i]
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yield "\n".join([''] + mutated + [''])
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if __name__ == "__main__": main()
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