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comparison cmd2.py @ 65:4e028e9ec4c2

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punctFinder going to go in
author catherine@Elli.myhome.westell.com
date Mon, 23 Jun 2008 12:51:37 -0400
parents 682588392eaf
children f373aaa2390c
comparison
equal deleted inserted replaced
64:a0f7702f2a4b 65:4e028e9ec4c2
16 16
17 CHANGES: 17 CHANGES:
18 As of 0.3.0, options should be specified as `optparse` options. See README.txt. 18 As of 0.3.0, options should be specified as `optparse` options. See README.txt.
19 flagReader.py options are still supported for backward compatibility 19 flagReader.py options are still supported for backward compatibility
20 """ 20 """
21 import cmd, re, os, sys, optparse, subprocess, tempfile, pyparsing 21 import cmd, re, os, sys, optparse, subprocess, tempfile, pyparsing, doctest
22 from optparse import make_option 22 from optparse import make_option
23 23
24 class OptionParser(optparse.OptionParser): 24 class OptionParser(optparse.OptionParser):
25 def exit(self, status=0, msg=None): 25 def exit(self, status=0, msg=None):
26 self.values._exit = True 26 self.values._exit = True
121 xclipproc.stdin.close() 121 xclipproc.stdin.close()
122 else: 122 else:
123 def getPasteBuffer(): 123 def getPasteBuffer():
124 raise OSError, pastebufferr % ('xclip', 'On Debian/Ubuntu, install with "sudo apt-get install xclip"') 124 raise OSError, pastebufferr % ('xclip', 'On Debian/Ubuntu, install with "sudo apt-get install xclip"')
125 setPasteBuffer = getPasteBuffer 125 setPasteBuffer = getPasteBuffer
126 126
127 def punctuationParser(punctuators):
128 """
129 Produces a string parser based on a list of targets to search for.
130 Output is a parser function.
131 Parser's output is a tuple: (before the target, [elements of the target], after the target)
132 >>> p = punctuationParser([';', 'EOF'])
133 >>> p('is terminated;')
134 ('is terminated', [';'], '')
135 >>> p('is terminated EOF after the end')
136 ('is terminated', ['EOF'], ' after the end')
137 >>> p('is not terminated')
138 >>> pattern1 = pyparsing.Literal(';') + pyparsing.Optional(pyparsing.Word(pyparsing.nums))
139 >>> p2 = punctuationParser([pattern1, 'EOF'])
140 >>> p2('the quick brown fox;4')
141 ('the quick brown fox', [';', '4'], '')
142 >>> p2('the quick brown foxEOF')
143 ('the quick brown fox', ['EOF'], '')
144 >>> p2('nothing')
145 """
146 processed = punctuators[:]
147 if not hasattr(processed[0], 'parseString'):
148 processed[0] = pyparsing.Literal(processed[0])
149 processed = reduce(lambda x, y: x ^ y, processed)
150 processed.ignore(pyparsing.sglQuotedString)
151 processed.ignore(pyparsing.dblQuotedString)
152 pattern = pyparsing.SkipTo(processed) + processed + pyparsing.restOfLine
153 def parser(txt):
154 result = pattern.searchString(txt)
155 if result:
156 return result[0][0], result[0][1:-1], result[0][-1]
157 else:
158 return None
159 return parser
160
127 class Cmd(cmd.Cmd): 161 class Cmd(cmd.Cmd):
128 caseInsensitive = True 162 caseInsensitive = True
129 multilineCommands = [] 163 multilineCommands = []
130 continuationPrompt = '> ' 164 continuationPrompt = '> '
131 shortcuts = {'?': 'help', '!': 'shell', '@': 'load'} 165 shortcuts = {'?': 'help', '!': 'shell', '@': 'load'}
141 for editor in ['gedit', 'kate', 'vim', 'emacs', 'nano', 'pico']: 175 for editor in ['gedit', 'kate', 'vim', 'emacs', 'nano', 'pico']:
142 if not os.system('which %s' % (editor)): 176 if not os.system('which %s' % (editor)):
143 break 177 break
144 178
145 settable = ['prompt', 'continuationPrompt', 'defaultFileName', 'editor', 'caseInsensitive'] 179 settable = ['prompt', 'continuationPrompt', 'defaultFileName', 'editor', 'caseInsensitive']
146 terminators = ';\n' 180 terminators = [';','\n']
147 _TO_PASTE_BUFFER = 1 181 _TO_PASTE_BUFFER = 1
148 def do_cmdenvironment(self, args): 182 def do_cmdenvironment(self, args):
149 self.stdout.write(""" 183 self.stdout.write("""
150 Commands are %(casesensitive)scase-sensitive. 184 Commands are %(casesensitive)scase-sensitive.
151 Commands may be terminated with: %(terminators)s 185 Commands may be terminated with: %(terminators)s
152 Settable parameters: %(settable)s 186 Settable parameters: %(settable)s
153 """ % 187 """ %
154 { 'casesensitive': ('not ' and self.caseInsensitive) or '', 188 { 'casesensitive': ('not ' and self.caseInsensitive) or '',
155 'terminators': ' '.join(self.terminators), 189 'terminators': ' '.join(str(self.terminators)),
156 'settable': ' '.join(self.settable) 190 'settable': ' '.join(self.settable)
157 }) 191 })
158 192
159 def do_help(self, arg): 193 def do_help(self, arg):
160 cmd.Cmd.do_help(self, arg) 194 cmd.Cmd.do_help(self, arg)
171 205
172 def do_shortcuts(self, args): 206 def do_shortcuts(self, args):
173 """Lists single-key shortcuts available.""" 207 """Lists single-key shortcuts available."""
174 result = "\n".join('%s: %s' % (sc[0], sc[1]) for sc in self.shortcuts.items()) 208 result = "\n".join('%s: %s' % (sc[0], sc[1]) for sc in self.shortcuts.items())
175 self.stdout.write("Single-key shortcuts for other commands:\n%s\n" % (result)) 209 self.stdout.write("Single-key shortcuts for other commands:\n%s\n" % (result))
176 210
211 commmand_terminator_finder = punctuationParser(terminators)
212 outputTo_finder = punctuationParser(['>'])
213 inputFrom_finder = punctuationParser(['<'])
214 pipe_finder = punctuationParser(['|'])
215
177 notAPipe = pyparsing.SkipTo('|') 216 notAPipe = pyparsing.SkipTo('|')
178 notAPipe.ignore(pyparsing.sglQuotedString) 217 notAPipe.ignore(pyparsing.sglQuotedString)
179 notAPipe.ignore(pyparsing.dblQuotedString) 218 notAPipe.ignore(pyparsing.dblQuotedString)
180 pipeFinder = notAPipe + '|' + pyparsing.SkipTo(pyparsing.StringEnd()) 219 pipeFinder = notAPipe + '|' + pyparsing.SkipTo(pyparsing.StringEnd())
181 def parsePipe(self, statement, mustBeTerminated): 220 def parsePipe(self, statement, mustBeTerminated):
648 for attrib in self.attribs: 687 for attrib in self.attribs:
649 setattr(self, attrib, getattr(self.obj, attrib)) 688 setattr(self, attrib, getattr(self.obj, attrib))
650 def restore(self): 689 def restore(self):
651 for attrib in self.attribs: 690 for attrib in self.attribs:
652 setattr(self.obj, attrib, getattr(self, attrib)) 691 setattr(self.obj, attrib, getattr(self, attrib))
692
693 if __name__ == '__main__':
694 doctest.testmod()
695