Mercurial > python-cmd2
annotate lineend.py @ 62:95e239c87010
use searchString
| author | catherine@Elli.myhome.westell.com |
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| date | Sat, 21 Jun 2008 19:45:50 -0400 |
| parents | 82891de09dbf |
| children | a96f824d1a24 |
| rev | line source |
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1 import pyparsing, sys, doctest |
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| 62 | 3 intgr = pyparsing.Optional(pyparsing.Word(pyparsing.nums)) |
| 4 terminators = [pyparsing.Literal(';') + intgr, | |
| 5 pyparsing.Literal('\\t') + intgr] | |
| 6 complete_pattern = reduce(lambda x, y: x ^ y, terminators) | |
| 7 #complete_pattern = (pyparsing.Literal(';') + intgr) ^ (pyparsing.Literal('\\t') + intgr) | |
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8 complete_pattern.ignore(pyparsing.sglQuotedString) |
| 62 | 9 complete_pattern.ignore(pyparsing.dblQuotedString) |
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| 62 | 11 redirect_pattern = pyparsing.oneOf('< >') + pyparsing.restOfLine |
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12 redirect_pattern.ignore(pyparsing.sglQuotedString) |
| 62 | 13 redirect_pattern.ignore(pyparsing.dblQuotedString) |
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| 62 | 15 pipe_pattern = pyparsing.Literal('|') + pyparsing.restOfLine |
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16 pipe_pattern.ignore(pyparsing.sglQuotedString) |
| 62 | 17 pipe_pattern.ignore(pyparsing.dblQuotedString) |
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18 |
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19 def parse(txt, mustBeTerminated=False): |
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20 """ |
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21 >>> sorted(parse('select * from dual;', True).items()) |
| 62 | 22 [('inputFrom', None), ('outputTo', None), ('pipeTo', None), ('terminator', [';'])] |
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23 >>> sorted(parse('select * from dual E', True).items()) |
| 62 | 24 [('inputFrom', None), ('outputTo', None), ('pipeTo', None), ('terminator', None)] |
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25 >>> sorted(parse('select * from', True).items()) |
| 62 | 26 [('inputFrom', None), ('outputTo', None), ('pipeTo', None), ('terminator', None)] |
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27 >>> sorted(parse('select * from dual; > result.txt', True).items()) |
| 62 | 28 [('inputFrom', None), ('outputTo', 'result.txt'), ('pipeTo', None), ('terminator', [';'])] |
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29 >>> sorted(parse("select * from dual where val = 'x > y'", True).items()) |
| 62 | 30 [('inputFrom', None), ('outputTo', None), ('pipeTo', None), ('terminator', None)] |
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31 >>> sorted(parse('select * from dual; | wc -c', True).items()) |
| 62 | 32 [('inputFrom', None), ('outputTo', None), ('pipeTo', ' wc -c'), ('terminator', [';'])] |
| 33 >>> sorted(parse('select * from dual; | sort > sorted.txt', True).items()) | |
| 34 [('inputFrom', None), ('outputTo', None), ('pipeTo', 'sort > sorted.txt'), ('terminator', [';'])] | |
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35 """ |
| 62 | 36 result = {'inputFrom': None, 'outputTo': None, 'pipeTo': None, 'terminator': None} |
| 37 found = complete_pattern.searchString(txt) | |
| 38 if found: | |
| 39 result['terminator'] = found[0][:] | |
| 40 found = redirect_pattern.searchString(txt) | |
| 41 if found: | |
| 42 if found[0][0] == '>': | |
| 43 result['outputTo'] = found[0][1].strip() | |
| 44 else: | |
| 45 result['inputFrom'] = found[0][1].strip() | |
| 46 found = pipe_pattern.searchString(txt) | |
| 47 if found: | |
| 48 result['pipeTo'] = found[0][1] | |
| 49 | |
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50 return result |
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51 |
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52 if __name__ == '__main__': |
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53 doctest.testmod() |
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54 |