Mercurial > python-cmd2
diff cmd2.py @ 81:a3b0ef23146f
trying to parseResults
author | catherine@Elli.myhome.westell.com |
---|---|
date | Fri, 04 Jul 2008 14:02:54 -0400 |
parents | 1e4ba836539e |
children | bbf0afc6868b |
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--- a/cmd2.py Fri Jul 04 07:13:57 2008 -0400 +++ b/cmd2.py Fri Jul 04 14:02:54 2008 -0400 @@ -126,10 +126,14 @@ pyparsing.ParserElement.setDefaultWhitespaceChars(' \t') def parseSearchResults(pattern, s): + generator = pattern.scanString(s) try: - return pattern.searchString(s)[0] - except IndexError: - return pyparsing.ParseResults('') + result, start, stop = generator.next() + result['before'], result['after'] = s[:start], s[stop:] + except StopIteration: + result = pyparsing.ParseResults('') + result['before'] = s + return result class Cmd(cmd.Cmd): caseInsensitive = True @@ -150,7 +154,7 @@ break settable = ['prompt', 'continuationPrompt', 'defaultFileName', 'editor', 'caseInsensitive'] - terminators = ';\n' + terminators = ';\n' #TODO: strip this _TO_PASTE_BUFFER = 1 def do_cmdenvironment(self, args): self.stdout.write(""" @@ -181,7 +185,7 @@ result = "\n".join('%s: %s' % (sc[0], sc[1]) for sc in self.shortcuts.items()) self.stdout.write("Single-key shortcuts for other commands:\n%s\n" % (result)) - terminators = (pyparsing.Literal(';') ^ pyparsing.Literal('\n\n')) \ + terminatorPattern = (pyparsing.Literal(';') ^ pyparsing.Literal('\n\n')) \ ('terminator') argSeparatorPattern = pyparsing.Word(pyparsing.printables)('command') \ + pyparsing.SkipTo(pyparsing.StringEnd())('args') @@ -192,8 +196,8 @@ + pyparsing.Optional(filenamePattern)('outputTo') redirectInPattern = pyparsing.Literal('<')('input') \ + pyparsing.Optional(filenamePattern)('inputFrom') - punctuationPattern = pipePattern ^ redirectInPattern ^ redirectOutPattern - for p in (terminators, pipePattern, redirectInPattern, redirectOutPattern, punctuationPattern): + punctuationPattern = pipePattern ^ redirectInPattern ^ redirectOutPattern + for p in (terminatorPattern, pipePattern, redirectInPattern, redirectOutPattern, punctuationPattern): p.ignore(pyparsing.sglQuotedString) p.ignore(pyparsing.dblQuotedString) @@ -203,7 +207,7 @@ >>> c.parsed('quotes "are > ignored" < inp.txt').asDict() {'args': '"are > ignored"', 'inputFrom': 'inp.txt', 'command': 'quotes', 'statement': 'quotes "are > ignored"', 'input': '<', 'fullStatement': 'quotes "are > ignored" < inp.txt'} >>> c.parsed('very complex; < from.txt >> to.txt etc.').asDict() - {'args': 'complex;', 'inputFrom': 'from.txt', 'command': 'very', 'statement': 'very complex;', 'input': '<', 'output': '>>', 'outputTo': 'to.txt', 'fullStatement': 'very complex; < from.txt >> to.txt etc.'} + {'args': 'complex;', 'inputFrom': 'from.txt', 'command': 'very', 'terminator': ';', 'statement': 'very complex;', 'input': '<', 'output': '>>', 'outputTo': 'to.txt', 'fullStatement': 'very complex; < from.txt >> to.txt etc.'} >>> c.parsed('nothing to parse').asDict() {'args': 'to parse', 'command': 'nothing', 'statement': 'nothing to parse', 'fullStatement': 'nothing to parse'} >>> c.parsed('send it to | sort | wc').asDict() @@ -218,23 +222,25 @@ return s result = (pyparsing.SkipTo(pyparsing.StringEnd()))('fullStatement').parseString(s) result['statement'] = result.fullStatement - try: - result += (pyparsing.SkipTo(self.punctuationPattern)('statement') \ - + self.punctuationPattern).parseString(s) - result += parseSearchResults(self.pipePattern, s) - result += parseSearchResults(self.redirectInPattern, s) - result += parseSearchResults(self.redirectOutPattern, s) - except pyparsing.ParseException: - pass - finally: + result['parseable'] = result.fullStatement + result += parseSearchResults( + pyparsing.SkipTo(self.terminatorPattern, include=True)('statement') + + pyparsing.SkipTo(pyparsing.StringEnd())('parseable'), s) + if result.terminator: + result['statement'] = ''.join(result.statement) + else: try: - result += self.argSeparatorPattern.parseString(result.statement) + result += pyparsing.SkipTo(self.punctuationPattern)('statement').parseString(s) except pyparsing.ParseException: - return result - if self.caseInsensitive: - result['command'] = result.command.lower() - result['statement'] = '%s %s' % (result.command, result.args) - return result + pass + result += parseSearchResults(self.pipePattern, result.parseable) + result += parseSearchResults(self.redirectInPattern, result.parseable) + result += parseSearchResults(self.redirectOutPattern, result.parseable) + result += parseSearchResults(self.argSeparatorPattern, result.statement) + if self.caseInsensitive: + result['command'] = result.command.lower() + result['statement'] = '%s %s' % (result.command, result.args) + return result def extractCommand(self, statement): try: