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30 lines
424 B
Python
30 lines
424 B
Python
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#
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# Usage:
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# prcontext <pattern> <# lines of context>
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#
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import sys
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#
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# Get the arguments
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#
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pattern=sys.argv[1]
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num=int(sys.argv[2])
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#
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# Get all of the lines in the file.
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#
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lines=sys.stdin.readlines()
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index=0
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for line in lines:
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if ((line.find(pattern)) != -1):
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if (index-num < 0):
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bottom=0
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else:
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bottom=index-num
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for output in lines[bottom:index+num+1]:
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print output[:-1]
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index=index+1
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