Mercurial > python-cmd2
annotate cmd2.py @ 242:d36ffc16f575
adjust docstring for windows
| author | catherine@dellzilla |
|---|---|
| date | Tue, 24 Mar 2009 15:28:04 -0400 |
| parents | af17ead6449d |
| children | de3e2a040279 |
| rev | line source |
|---|---|
| 230 | 1 """Variant on standard library's cmd with extra features. |
| 2 | |
| 3 To use, simply import cmd2.Cmd instead of cmd.Cmd; use precisely as though you | |
| 4 were using the standard library's cmd, while enjoying the extra features. | |
| 5 | |
| 6 Searchable command history (commands: "hi", "li", "run") | |
| 7 Load commands from file, save to file, edit commands in file | |
| 8 Multi-line commands | |
| 9 Case-insensitive commands | |
| 10 Special-character shortcut commands (beyond cmd's "@" and "!") | |
| 11 Settable environment parameters | |
| 12 Optional _onchange_{paramname} called when environment parameter changes | |
| 13 Parsing commands with `optparse` options (flags) | |
| 14 Redirection to file with >, >>; input from file with < | |
| 15 Easy transcript-based testing of applications (see example/example.py) | |
| 16 | |
| 17 Note that redirection with > and | will only work if `self.stdout.write()` | |
| 18 is used in place of `print`. The standard library's `cmd` module is | |
| 19 written to use `self.stdout.write()`, | |
| 20 | |
| 21 - Catherine Devlin, Jan 03 2008 - catherinedevlin.blogspot.com | |
| 22 | |
| 23 mercurial repository at http://www.assembla.com/wiki/show/python-cmd2 | |
| 24 CHANGES: | |
| 25 As of 0.3.0, options should be specified as `optparse` options. See README.txt. | |
| 26 flagReader.py options are still supported for backward compatibility | |
| 27 """ | |
| 28 import cmd, re, os, sys, optparse, subprocess, tempfile, pyparsing, doctest | |
|
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29 import unittest, string, datetime, urllib, inspect |
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30 from code import InteractiveConsole, InteractiveInterpreter, softspace |
| 230 | 31 from optparse import make_option |
| 32 __version__ = '0.4.8' | |
| 33 | |
| 34 class OptionParser(optparse.OptionParser): | |
| 35 def exit(self, status=0, msg=None): | |
| 36 self.values._exit = True | |
| 37 if msg: | |
| 38 print msg | |
| 39 | |
| 40 def print_help(self, *args, **kwargs): | |
| 41 # now, I need to call help of the calling function. Hmm. | |
| 42 try: | |
| 43 print self._func.__doc__ | |
| 44 except AttributeError: | |
| 45 pass | |
| 46 optparse.OptionParser.print_help(self, *args, **kwargs) | |
| 47 | |
| 48 def error(self, msg): | |
| 49 """error(msg : string) | |
| 50 | |
| 51 Print a usage message incorporating 'msg' to stderr and exit. | |
| 52 If you override this in a subclass, it should not return -- it | |
| 53 should either exit or raise an exception. | |
| 54 """ | |
| 55 raise | |
| 56 | |
| 57 def remainingArgs(oldArgs, newArgList): | |
| 58 ''' | |
| 59 >>> remainingArgs('-f bar bar cow', ['bar', 'cow']) | |
| 60 'bar cow' | |
| 61 ''' | |
| 62 pattern = '\s+'.join(re.escape(a) for a in newArgList) + '\s*$' | |
| 63 matchObj = re.search(pattern, oldArgs) | |
| 64 return oldArgs[matchObj.start():] | |
| 65 | |
| 66 def options(option_list): | |
| 67 def option_setup(func): | |
| 68 optionParser = OptionParser() | |
| 69 for opt in option_list: | |
| 70 optionParser.add_option(opt) | |
| 71 optionParser.set_usage("%s [options] arg" % func.__name__.strip('do_')) | |
| 72 optionParser._func = func | |
| 73 def newFunc(instance, arg): | |
| 74 try: | |
| 75 opts, newArgList = optionParser.parse_args(arg.split()) # doesn't understand quoted strings shouldn't be dissected! | |
| 76 newArgs = remainingArgs(arg, newArgList) # should it permit flags after args? | |
| 77 except (optparse.OptionValueError, optparse.BadOptionError, | |
| 78 optparse.OptionError, optparse.AmbiguousOptionError, | |
| 79 optparse.OptionConflictError), e: | |
| 80 print e | |
| 81 optionParser.print_help() | |
| 82 return | |
| 83 if hasattr(opts, '_exit'): | |
| 84 return None | |
| 85 if hasattr(arg, 'parser'): | |
| 86 terminator = arg.parsed.terminator | |
| 87 try: | |
| 88 if arg.parsed.terminator[0] == '\n': | |
| 89 terminator = arg.parsed.terminator[0] | |
| 90 except IndexError: | |
| 91 pass | |
| 92 arg = arg.parser('%s %s%s%s' % (arg.parsed.command, newArgs, | |
| 93 terminator, arg.parsed.suffix)) | |
| 94 else: | |
| 95 arg = newArgs | |
| 96 result = func(instance, arg, opts) | |
| 97 return result | |
| 98 newFunc.__doc__ = '%s\n%s' % (func.__doc__, optionParser.format_help()) | |
| 99 return newFunc | |
| 100 return option_setup | |
| 101 | |
| 102 class PasteBufferError(EnvironmentError): | |
| 103 if sys.platform[:3] == 'win': | |
| 104 errmsg = """Redirecting to or from paste buffer requires pywin32 | |
| 105 to be installed on operating system. | |
| 106 Download from http://sourceforge.net/projects/pywin32/""" | |
| 107 else: | |
| 108 errmsg = """Redirecting to or from paste buffer requires xclip | |
| 109 to be installed on operating system. | |
| 110 On Debian/Ubuntu, 'sudo apt-get install xclip' will install it.""" | |
| 111 def __init__(self): | |
| 112 Exception.__init__(self, self.errmsg) | |
| 113 | |
| 114 '''check here if functions exist; otherwise, stub out''' | |
| 115 pastebufferr = """Redirecting to or from paste buffer requires %s | |
| 116 to be installed on operating system. | |
| 117 %s""" | |
| 118 if subprocess.mswindows: | |
| 119 try: | |
| 120 import win32clipboard | |
| 121 def getPasteBuffer(): | |
| 122 win32clipboard.OpenClipboard(0) | |
| 123 try: | |
| 124 result = win32clipboard.GetClipboardData() | |
| 125 except TypeError: | |
| 126 result = '' #non-text | |
| 127 win32clipboard.CloseClipboard() | |
| 128 return result | |
| 129 def writeToPasteBuffer(txt): | |
| 130 win32clipboard.OpenClipboard(0) | |
| 131 win32clipboard.EmptyClipboard() | |
| 132 win32clipboard.SetClipboardText(txt) | |
| 133 win32clipboard.CloseClipboard() | |
| 134 except ImportError: | |
| 135 def getPasteBuffer(*args): | |
| 136 raise OSError, pastebufferr % ('pywin32', 'Download from http://sourceforge.net/projects/pywin32/') | |
| 137 setPasteBuffer = getPasteBuffer | |
| 138 else: | |
| 139 can_clip = False | |
| 140 try: | |
| 141 subprocess.check_call('xclip -o -sel clip', shell=True, stdout=subprocess.PIPE, stdin=subprocess.PIPE) | |
| 142 can_clip = True | |
| 143 except AttributeError: # check_call not defined, Python < 2.5 | |
| 144 teststring = 'Testing for presence of xclip.' | |
| 145 xclipproc = subprocess.Popen('xclip -sel clip', shell=True, stdout=subprocess.PIPE, stdin=subprocess.PIPE) | |
| 146 xclipproc.stdin.write(teststring) | |
| 147 xclipproc.stdin.close() | |
| 148 xclipproc = subprocess.Popen('xclip -o -sel clip', shell=True, stdout=subprocess.PIPE, stdin=subprocess.PIPE) | |
| 149 if xclipproc.stdout.read() == teststring: | |
| 150 can_clip = True | |
| 151 except (subprocess.CalledProcessError, OSError, IOError): | |
| 152 pass | |
| 153 if can_clip: | |
| 154 def getPasteBuffer(): | |
| 155 xclipproc = subprocess.Popen('xclip -o -sel clip', shell=True, stdout=subprocess.PIPE, stdin=subprocess.PIPE) | |
| 156 return xclipproc.stdout.read() | |
| 157 def writeToPasteBuffer(txt): | |
| 158 xclipproc = subprocess.Popen('xclip -sel clip', shell=True, stdout=subprocess.PIPE, stdin=subprocess.PIPE) | |
| 159 xclipproc.stdin.write(txt) | |
| 160 xclipproc.stdin.close() | |
| 161 # but we want it in both the "primary" and "mouse" clipboards | |
| 162 xclipproc = subprocess.Popen('xclip', shell=True, stdout=subprocess.PIPE, stdin=subprocess.PIPE) | |
| 163 xclipproc.stdin.write(txt) | |
| 164 xclipproc.stdin.close() | |
| 165 else: | |
| 166 def getPasteBuffer(*args): | |
| 167 raise OSError, pastebufferr % ('xclip', 'On Debian/Ubuntu, install with "sudo apt-get install xclip"') | |
| 168 setPasteBuffer = getPasteBuffer | |
| 169 writeToPasteBuffer = getPasteBuffer | |
| 170 | |
| 171 pyparsing.ParserElement.setDefaultWhitespaceChars(' \t') | |
| 172 | |
| 173 class ParsedString(str): | |
| 174 pass | |
| 175 | |
| 176 class SkipToLast(pyparsing.SkipTo): | |
| 177 def parseImpl( self, instring, loc, doActions=True ): | |
| 178 resultStore = [] | |
| 179 startLoc = loc | |
| 180 instrlen = len(instring) | |
| 181 expr = self.expr | |
| 182 failParse = False | |
| 183 while loc <= instrlen: | |
| 184 try: | |
| 185 if self.failOn: | |
| 186 failParse = True | |
| 187 self.failOn.tryParse(instring, loc) | |
| 188 failParse = False | |
| 189 loc = expr._skipIgnorables( instring, loc ) | |
| 190 expr._parse( instring, loc, doActions=False, callPreParse=False ) | |
| 191 skipText = instring[startLoc:loc] | |
| 192 if self.includeMatch: | |
| 193 loc,mat = expr._parse(instring,loc,doActions,callPreParse=False) | |
| 194 if mat: | |
| 195 skipRes = ParseResults( skipText ) | |
| 196 skipRes += mat | |
| 197 resultStore.append((loc, [ skipRes ])) | |
| 198 else: | |
| 199 resultStore,append((loc, [ skipText ])) | |
| 200 else: | |
| 201 resultStore.append((loc, [ skipText ])) | |
| 202 loc += 1 | |
| 203 except (pyparsing.ParseException,IndexError): | |
| 204 if failParse: | |
| 205 raise | |
| 206 else: | |
| 207 loc += 1 | |
| 208 if resultStore: | |
| 209 return resultStore[-1] | |
| 210 else: | |
| 211 exc = self.myException | |
| 212 exc.loc = loc | |
| 213 exc.pstr = instring | |
| 214 raise exc | |
| 215 | |
| 216 def replace_with_file_contents(fname): | |
| 217 if fname: | |
| 218 try: | |
| 219 result = open(os.path.expanduser(fname[0])).read() | |
| 220 except IOError: | |
| 221 result = '< %s' % fname[0] # wasn't a file after all | |
| 222 else: | |
| 223 result = getPasteBuffer() | |
| 233 | 224 return result |
| 225 | |
| 234 | 226 class EmbeddedConsoleExit(Exception): |
| 227 pass | |
| 228 | |
|
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229 class MyInteractiveConsole(InteractiveConsole): |
| 234 | 230 def runcode(self, code): |
| 231 """Execute a code object. | |
| 232 | |
| 233 When an exception occurs, self.showtraceback() is called to | |
| 234 display a traceback. All exceptions are caught except | |
| 235 SystemExit, which is reraised. | |
| 236 | |
| 237 A note about KeyboardInterrupt: this exception may occur | |
| 238 elsewhere in this code, and may not always be caught. The | |
| 239 caller should be prepared to deal with it. | |
| 240 | |
| 241 Copied directly from code.InteractiveInterpreter, except for | |
| 242 EmbeddedConsoleExit exceptions. | |
| 243 """ | |
| 244 try: | |
| 245 exec code in self.locals | |
| 246 except (SystemExit, EmbeddedConsoleExit): | |
| 247 raise | |
| 248 except: | |
| 249 self.showtraceback() | |
| 250 else: | |
|
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diff
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|
251 if softspace(sys.stdout, 0): |
| 234 | 252 print |
| 253 | |
| 230 | 254 class Cmd(cmd.Cmd): |
| 255 echo = False | |
| 256 case_insensitive = True | |
| 257 continuation_prompt = '> ' | |
| 258 timing = False | |
| 259 legalChars = '!#$%.:?@_' + pyparsing.alphanums + pyparsing.alphas8bit # make sure your terminators are not in here! | |
| 260 shortcuts = {'?': 'help', '!': 'shell', '@': 'load' } | |
| 261 excludeFromHistory = '''run r list l history hi ed edit li eof'''.split() | |
| 262 noSpecialParse = 'set ed edit exit'.split() | |
| 263 defaultExtension = 'txt' | |
| 264 default_file_name = 'command.txt' | |
| 265 abbrev = True | |
| 233 | 266 nonpythoncommand = 'cmd' |
| 230 | 267 settable = ['prompt', 'continuation_prompt', 'default_file_name', 'editor', |
| 268 'case_insensitive', 'echo', 'timing', 'abbrev'] | |
| 269 settable.sort() | |
| 270 | |
| 271 editor = os.environ.get('EDITOR') | |
| 272 _STOP_AND_EXIT = 2 | |
| 273 if not editor: | |
| 274 if sys.platform[:3] == 'win': | |
| 275 editor = 'notepad' | |
| 276 else: | |
| 277 for editor in ['gedit', 'kate', 'vim', 'emacs', 'nano', 'pico']: | |
| 278 if not os.system('which %s' % (editor)): | |
| 279 break | |
| 280 | |
| 281 def do_cmdenvironment(self, args): | |
| 282 '''Summary report of interactive parameters.''' | |
| 283 self.stdout.write(""" | |
| 284 Commands are %(casesensitive)scase-sensitive. | |
| 285 Commands may be terminated with: %(terminators)s | |
| 237 | 286 Settable parameters: %(settable)s\n""" % \ |
| 230 | 287 { 'casesensitive': (self.case_insensitive and 'not ') or '', |
| 288 'terminators': str(self.terminators), | |
| 289 'settable': ' '.join(self.settable) | |
| 290 }) | |
| 291 | |
| 292 def do_help(self, arg): | |
| 293 try: | |
| 294 fn = getattr(self, 'do_' + arg) | |
| 295 if fn and fn.optionParser: | |
| 296 fn.optionParser.print_help(file=self.stdout) | |
| 297 return | |
| 298 except AttributeError: | |
| 299 pass | |
| 300 cmd.Cmd.do_help(self, arg) | |
| 301 | |
| 302 def __init__(self, *args, **kwargs): | |
| 303 cmd.Cmd.__init__(self, *args, **kwargs) | |
| 304 self.history = History() | |
| 305 self._init_parser() | |
| 306 self.pystate = {} | |
| 307 | |
| 308 def do_shortcuts(self, args): | |
| 309 """Lists single-key shortcuts available.""" | |
| 310 result = "\n".join('%s: %s' % (sc[0], sc[1]) for sc in self.shortcuts.items()) | |
| 311 self.stdout.write("Single-key shortcuts for other commands:\n%s\n" % (result)) | |
| 312 | |
| 313 prefixParser = pyparsing.Empty() | |
| 314 commentGrammars = pyparsing.Or([pyparsing.pythonStyleComment, pyparsing.cStyleComment]) | |
| 315 commentGrammars.addParseAction(lambda x: '') | |
| 316 commentInProgress = ((pyparsing.White() | pyparsing.lineStart) + | |
| 317 pyparsing.Literal('/*') + pyparsing.SkipTo(pyparsing.stringEnd)) | |
| 318 # `blah/*` means `everything in directory `blah`, not comment | |
| 319 terminators = [';'] | |
| 320 blankLinesAllowed = False | |
| 321 multilineCommands = [] | |
| 322 | |
| 323 def _init_parser(self): | |
| 324 r''' | |
| 325 >>> c = Cmd() | |
| 326 >>> c.multilineCommands = ['multiline'] | |
| 327 >>> c.case_insensitive = True | |
| 328 >>> c._init_parser() | |
| 329 >>> print c.parser.parseString('').dump() | |
| 330 [] | |
| 331 >>> print c.parser.parseString('/* empty command */').dump() | |
| 332 [] | |
| 333 >>> print c.parser.parseString('plainword').dump() | |
| 334 ['plainword', ''] | |
| 335 - command: plainword | |
| 336 - statement: ['plainword', ''] | |
| 337 - command: plainword | |
| 338 >>> print c.parser.parseString('termbare;').dump() | |
| 339 ['termbare', '', ';', ''] | |
| 340 - command: termbare | |
| 341 - statement: ['termbare', '', ';'] | |
| 342 - command: termbare | |
| 343 - terminator: ; | |
| 344 - terminator: ; | |
| 345 >>> print c.parser.parseString('termbare; suffx').dump() | |
| 346 ['termbare', '', ';', 'suffx'] | |
| 347 - command: termbare | |
| 348 - statement: ['termbare', '', ';'] | |
| 349 - command: termbare | |
| 350 - terminator: ; | |
| 351 - suffix: suffx | |
| 352 - terminator: ; | |
| 353 >>> print c.parser.parseString('barecommand').dump() | |
| 354 ['barecommand', ''] | |
| 355 - command: barecommand | |
| 356 - statement: ['barecommand', ''] | |
| 357 - command: barecommand | |
| 358 >>> print c.parser.parseString('COMmand with args').dump() | |
| 359 ['command', 'with args'] | |
| 360 - args: with args | |
| 361 - command: command | |
| 362 - statement: ['command', 'with args'] | |
| 363 - args: with args | |
| 364 - command: command | |
| 365 >>> print c.parser.parseString('command with args and terminator; and suffix').dump() | |
| 366 ['command', 'with args and terminator', ';', 'and suffix'] | |
| 367 - args: with args and terminator | |
| 368 - command: command | |
| 369 - statement: ['command', 'with args and terminator', ';'] | |
| 370 - args: with args and terminator | |
| 371 - command: command | |
| 372 - terminator: ; | |
| 373 - suffix: and suffix | |
| 374 - terminator: ; | |
| 375 >>> print c.parser.parseString('simple | piped').dump() | |
| 376 ['simple', '', '|', ' piped'] | |
| 377 - command: simple | |
| 378 - pipeTo: piped | |
| 379 - statement: ['simple', ''] | |
| 380 - command: simple | |
| 381 >>> print c.parser.parseString('double-pipe || is not a pipe').dump() | |
| 382 ['double', '-pipe || is not a pipe'] | |
| 383 - args: -pipe || is not a pipe | |
| 384 - command: double | |
| 385 - statement: ['double', '-pipe || is not a pipe'] | |
| 386 - args: -pipe || is not a pipe | |
| 387 - command: double | |
| 388 >>> print c.parser.parseString('command with args, terminator;sufx | piped').dump() | |
| 389 ['command', 'with args, terminator', ';', 'sufx', '|', ' piped'] | |
| 390 - args: with args, terminator | |
| 391 - command: command | |
| 392 - pipeTo: piped | |
| 393 - statement: ['command', 'with args, terminator', ';'] | |
| 394 - args: with args, terminator | |
| 395 - command: command | |
| 396 - terminator: ; | |
| 397 - suffix: sufx | |
| 398 - terminator: ; | |
| 399 >>> print c.parser.parseString('output into > afile.txt').dump() | |
| 400 ['output', 'into', '>', 'afile.txt'] | |
| 401 - args: into | |
| 402 - command: output | |
| 403 - output: > | |
| 404 - outputTo: afile.txt | |
| 405 - statement: ['output', 'into'] | |
| 406 - args: into | |
| 407 - command: output | |
| 408 >>> print c.parser.parseString('output into;sufx | pipethrume plz > afile.txt').dump() | |
| 409 ['output', 'into', ';', 'sufx', '|', ' pipethrume plz', '>', 'afile.txt'] | |
| 410 - args: into | |
| 411 - command: output | |
| 412 - output: > | |
| 413 - outputTo: afile.txt | |
| 414 - pipeTo: pipethrume plz | |
| 415 - statement: ['output', 'into', ';'] | |
| 416 - args: into | |
| 417 - command: output | |
| 418 - terminator: ; | |
| 419 - suffix: sufx | |
| 420 - terminator: ; | |
| 421 >>> print c.parser.parseString('output to paste buffer >> ').dump() | |
| 422 ['output', 'to paste buffer', '>>', ''] | |
| 423 - args: to paste buffer | |
| 424 - command: output | |
| 425 - output: >> | |
| 426 - statement: ['output', 'to paste buffer'] | |
| 427 - args: to paste buffer | |
| 428 - command: output | |
| 429 >>> print c.parser.parseString('ignore the /* commented | > */ stuff;').dump() | |
| 430 ['ignore', 'the /* commented | > */ stuff', ';', ''] | |
| 431 - args: the /* commented | > */ stuff | |
| 432 - command: ignore | |
| 433 - statement: ['ignore', 'the /* commented | > */ stuff', ';'] | |
| 434 - args: the /* commented | > */ stuff | |
| 435 - command: ignore | |
| 436 - terminator: ; | |
| 437 - terminator: ; | |
| 438 >>> print c.parser.parseString('has > inside;').dump() | |
| 439 ['has', '> inside', ';', ''] | |
| 440 - args: > inside | |
| 441 - command: has | |
| 442 - statement: ['has', '> inside', ';'] | |
| 443 - args: > inside | |
| 444 - command: has | |
| 445 - terminator: ; | |
| 446 - terminator: ; | |
| 447 >>> print c.parser.parseString('multiline has > inside an unfinished command').dump() | |
| 448 ['multiline', ' has > inside an unfinished command'] | |
| 449 - multilineCommand: multiline | |
| 450 >>> print c.parser.parseString('multiline has > inside;').dump() | |
| 451 ['multiline', 'has > inside', ';', ''] | |
| 452 - args: has > inside | |
| 453 - multilineCommand: multiline | |
| 454 - statement: ['multiline', 'has > inside', ';'] | |
| 455 - args: has > inside | |
| 456 - multilineCommand: multiline | |
| 457 - terminator: ; | |
| 458 - terminator: ; | |
| 459 >>> print c.parser.parseString('multiline command /* with comment in progress;').dump() | |
| 460 ['multiline', ' command /* with comment in progress;'] | |
| 461 - multilineCommand: multiline | |
| 462 >>> print c.parser.parseString('multiline command /* with comment complete */ is done;').dump() | |
| 463 ['multiline', 'command /* with comment complete */ is done', ';', ''] | |
| 464 - args: command /* with comment complete */ is done | |
| 465 - multilineCommand: multiline | |
| 466 - statement: ['multiline', 'command /* with comment complete */ is done', ';'] | |
| 467 - args: command /* with comment complete */ is done | |
| 468 - multilineCommand: multiline | |
| 469 - terminator: ; | |
| 470 - terminator: ; | |
| 471 >>> print c.parser.parseString('multiline command ends\n\n').dump() | |
| 472 ['multiline', 'command ends', '\n', '\n'] | |
| 473 - args: command ends | |
| 474 - multilineCommand: multiline | |
| 475 - statement: ['multiline', 'command ends', '\n', '\n'] | |
| 476 - args: command ends | |
| 477 - multilineCommand: multiline | |
| 478 - terminator: ['\n', '\n'] | |
| 479 - terminator: ['\n', '\n'] | |
| 480 ''' | |
| 481 outputParser = (pyparsing.Literal('>>') | (pyparsing.WordStart() + '>') | pyparsing.Regex('[^=]>'))('output') | |
| 482 | |
| 483 terminatorParser = pyparsing.Or([(hasattr(t, 'parseString') and t) or pyparsing.Literal(t) for t in self.terminators])('terminator') | |
| 484 stringEnd = pyparsing.stringEnd ^ '\nEOF' | |
| 485 self.multilineCommand = pyparsing.Or([pyparsing.Keyword(c, caseless=self.case_insensitive) for c in self.multilineCommands])('multilineCommand') | |
| 486 oneLineCommand = (~self.multilineCommand + pyparsing.Word(self.legalChars))('command') | |
| 487 pipe = pyparsing.Keyword('|', identChars='|') | |
| 488 self.commentGrammars.ignore(pyparsing.quotedString).setParseAction(lambda x: '') | |
| 489 self.commentInProgress.ignore(pyparsing.quotedString).ignore(pyparsing.cStyleComment) | |
| 490 afterElements = \ | |
| 491 pyparsing.Optional(pipe + pyparsing.SkipTo(outputParser ^ stringEnd)('pipeTo')) + \ | |
| 492 pyparsing.Optional(outputParser + pyparsing.SkipTo(stringEnd).setParseAction(lambda x: x[0].strip())('outputTo')) | |
| 493 if self.case_insensitive: | |
| 494 self.multilineCommand.setParseAction(lambda x: x[0].lower()) | |
| 495 oneLineCommand.setParseAction(lambda x: x[0].lower()) | |
| 496 if self.blankLinesAllowed: | |
| 497 self.blankLineTerminationParser = pyparsing.NoMatch | |
| 498 else: | |
| 499 self.blankLineTerminator = (pyparsing.lineEnd + pyparsing.lineEnd)('terminator') | |
| 500 self.blankLineTerminator.setResultsName('terminator') | |
| 501 self.blankLineTerminationParser = ((self.multilineCommand ^ oneLineCommand) + pyparsing.SkipTo(self.blankLineTerminator).setParseAction(lambda x: x[0].strip())('args') + self.blankLineTerminator)('statement') | |
| 502 self.multilineParser = (((self.multilineCommand ^ oneLineCommand) + SkipToLast(terminatorParser).setParseAction(lambda x: x[0].strip())('args') + terminatorParser)('statement') + | |
| 503 pyparsing.SkipTo(outputParser ^ pipe ^ stringEnd).setParseAction(lambda x: x[0].strip())('suffix') + afterElements) | |
| 504 self.singleLineParser = ((oneLineCommand + pyparsing.SkipTo(terminatorParser ^ stringEnd ^ pipe ^ outputParser).setParseAction(lambda x:x[0].strip())('args'))('statement') + | |
| 505 pyparsing.Optional(terminatorParser) + afterElements) | |
| 506 #self.multilineParser = self.multilineParser.setResultsName('multilineParser') | |
| 507 #self.singleLineParser = self.singleLineParser.setResultsName('singleLineParser') | |
| 508 #self.blankLineTerminationParser = self.blankLineTerminationParser.setResultsName('blankLineTerminatorParser') | |
| 509 self.parser = ( | |
| 510 stringEnd | | |
| 511 self.prefixParser + self.multilineParser | | |
| 512 self.prefixParser + self.singleLineParser | | |
| 513 self.prefixParser + self.blankLineTerminationParser | | |
| 514 self.prefixParser + self.multilineCommand + pyparsing.SkipTo(stringEnd) | |
| 515 ) | |
| 516 self.parser.ignore(pyparsing.quotedString).ignore(self.commentGrammars).ignore(self.commentInProgress) | |
| 517 | |
| 518 inputMark = pyparsing.Literal('<') | |
| 519 inputMark.setParseAction(lambda x: '') | |
| 520 fileName = pyparsing.Word(self.legalChars + '/\\') | |
| 521 inputFrom = fileName('inputFrom') | |
| 522 inputFrom.setParseAction(replace_with_file_contents) | |
| 523 # a not-entirely-satisfactory way of distinguishing < as in "import from" from < | |
| 524 # as in "lesser than" | |
| 525 self.inputParser = inputMark + pyparsing.Optional(inputFrom) + pyparsing.Optional('>') + \ | |
| 526 pyparsing.Optional(fileName) + (pyparsing.stringEnd | '|') | |
| 527 self.inputParser.ignore(pyparsing.quotedString).ignore(self.commentGrammars).ignore(self.commentInProgress) | |
| 528 | |
| 529 def preparse(self, raw, **kwargs): | |
| 530 return raw | |
| 531 | |
| 532 def parsed(self, raw, **kwargs): | |
| 533 if isinstance(raw, ParsedString): | |
| 534 p = raw | |
| 535 else: | |
| 536 raw = self.preparse(raw, **kwargs) | |
| 537 s = self.inputParser.transformString(raw.lstrip()) | |
| 538 for (shortcut, expansion) in self.shortcuts.items(): | |
| 539 if s.lower().startswith(shortcut): | |
| 540 s = s.replace(shortcut, expansion + ' ', 1) | |
| 541 break | |
| 542 result = self.parser.parseString(s) | |
| 543 result['command'] = result.multilineCommand or result.command | |
| 544 result['raw'] = raw | |
| 545 result['clean'] = self.commentGrammars.transformString(result.args) | |
| 546 result['expanded'] = s | |
| 547 p = ParsedString(result.clean) | |
| 548 p.parsed = result | |
| 549 p.parser = self.parsed | |
| 550 for (key, val) in kwargs.items(): | |
| 551 p.parsed[key] = val | |
| 552 return p | |
| 553 | |
| 554 def postparsing_precmd(self, statement): | |
| 555 stop = 0 | |
| 556 return stop, statement | |
| 557 def postparsing_postcmd(self, stop): | |
| 558 return stop | |
| 559 def onecmd(self, line): | |
| 560 """Interpret the argument as though it had been typed in response | |
| 561 to the prompt. | |
| 562 | |
| 563 This may be overridden, but should not normally need to be; | |
| 564 see the precmd() and postcmd() methods for useful execution hooks. | |
| 565 The return value is a flag indicating whether interpretation of | |
| 566 commands by the interpreter should stop. | |
| 567 | |
| 568 This (`cmd2`) version of `onecmd` already override's `cmd`'s `onecmd`. | |
| 569 | |
| 570 """ | |
| 571 if not line: | |
| 572 return self.emptyline() | |
| 573 if not pyparsing.Or(self.commentGrammars).setParseAction(lambda x: '').transformString(line): | |
| 574 return 0 # command was empty except for comments | |
| 575 try: | |
| 576 statement = self.parsed(line) | |
| 577 while statement.parsed.multilineCommand and (statement.parsed.terminator == ''): | |
| 578 statement = '%s\n%s' % (statement.parsed.raw, | |
| 579 self.pseudo_raw_input(self.continuation_prompt)) | |
| 580 statement = self.parsed(statement) | |
| 581 except Exception, e: | |
| 582 print e | |
| 583 return 0 | |
| 584 | |
| 585 try: | |
| 586 (stop, statement) = self.postparsing_precmd(statement) | |
| 587 except Exception, e: | |
| 588 print str(e) | |
| 589 return 0 | |
| 590 if stop: | |
| 591 return self.postparsing_postcmd(stop) | |
| 592 | |
| 593 if not statement.parsed.command: | |
| 594 return self.postparsing_postcmd(stop=0) | |
| 595 | |
| 596 statekeeper = None | |
| 597 | |
| 598 if statement.parsed.pipeTo: | |
| 599 redirect = subprocess.Popen(statement.parsed.pipeTo, shell=True, stdout=subprocess.PIPE, stdin=subprocess.PIPE) | |
| 600 statekeeper = Statekeeper(self, ('stdout',)) | |
| 601 self.stdout = redirect.stdin | |
| 602 elif statement.parsed.output: | |
| 603 statekeeper = Statekeeper(self, ('stdout',)) | |
| 604 if statement.parsed.outputTo: | |
| 605 mode = 'w' | |
| 606 if statement.parsed.output == '>>': | |
| 607 mode = 'a' | |
| 608 try: | |
| 609 self.stdout = open(os.path.expanduser(statement.parsed.outputTo), mode) | |
| 610 except OSError, e: | |
| 611 print e | |
| 612 return self.postparsing_postcmd(stop=0) | |
| 613 else: | |
| 614 statekeeper = Statekeeper(self, ('stdout',)) | |
| 615 self.stdout = tempfile.TemporaryFile() | |
| 616 if statement.parsed.output == '>>': | |
| 617 self.stdout.write(getPasteBuffer()) | |
| 618 try: | |
| 619 # "heart" of the command, replace's cmd's onecmd() | |
| 620 self.lastcmd = statement.parsed.expanded | |
| 621 try: | |
| 622 func = getattr(self, 'do_' + statement.parsed.command) | |
| 623 except AttributeError: | |
| 624 func = None | |
| 625 if self.abbrev: # accept shortened versions of commands | |
| 237 | 626 funcs = [(fname, function) for (fname, function) in inspect.getmembers(self, inspect.ismethod) |
| 230 | 627 if fname.startswith('do_' + statement.parsed.command)] |
| 628 if len(funcs) == 1: | |
| 237 | 629 func = funcs[0][1] |
| 230 | 630 if not func: |
| 631 return self.postparsing_postcmd(self.default(statement)) | |
| 632 timestart = datetime.datetime.now() | |
| 633 stop = func(statement) | |
| 634 if self.timing: | |
| 635 print 'Elapsed: %s' % str(datetime.datetime.now() - timestart) | |
| 636 except Exception, e: | |
| 637 print e | |
| 638 try: | |
| 639 if statement.parsed.command not in self.excludeFromHistory: | |
| 640 self.history.append(statement.parsed.raw) | |
| 641 finally: | |
| 642 if statekeeper: | |
| 643 if statement.parsed.output and not statement.parsed.outputTo: | |
| 644 self.stdout.seek(0) | |
| 645 try: | |
| 646 writeToPasteBuffer(self.stdout.read()) | |
| 647 except Exception, e: | |
| 648 print str(e) | |
| 649 elif statement.parsed.pipeTo: | |
| 650 for result in redirect.communicate(): | |
| 651 statekeeper.stdout.write(result or '') | |
| 652 self.stdout.close() | |
| 653 statekeeper.restore() | |
| 654 | |
| 655 return self.postparsing_postcmd(stop) | |
| 656 | |
| 657 def pseudo_raw_input(self, prompt): | |
| 658 """copied from cmd's cmdloop; like raw_input, but accounts for changed stdin, stdout""" | |
| 659 | |
| 660 if self.use_rawinput: | |
| 661 try: | |
| 662 line = raw_input(prompt) | |
| 663 except EOFError: | |
| 664 line = 'EOF' | |
| 665 else: | |
| 666 self.stdout.write(prompt) | |
| 667 self.stdout.flush() | |
| 668 line = self.stdin.readline() | |
| 669 if not len(line): | |
| 670 line = 'EOF' | |
| 671 else: | |
| 672 if line[-1] == '\n': # this was always true in Cmd | |
| 673 line = line[:-1] | |
| 674 return line | |
| 675 | |
| 676 def cmdloop(self, intro=None): | |
| 677 """Repeatedly issue a prompt, accept input, parse an initial prefix | |
| 678 off the received input, and dispatch to action methods, passing them | |
| 679 the remainder of the line as argument. | |
| 680 """ | |
| 681 | |
| 682 # An almost perfect copy from Cmd; however, the pseudo_raw_input portion | |
| 683 # has been split out so that it can be called separately | |
| 684 | |
| 685 self.preloop() | |
| 686 if self.use_rawinput and self.completekey: | |
| 687 try: | |
| 688 import readline | |
| 689 self.old_completer = readline.get_completer() | |
| 690 readline.set_completer(self.complete) | |
| 691 readline.parse_and_bind(self.completekey+": complete") | |
| 692 except ImportError: | |
| 693 pass | |
| 694 try: | |
| 695 if intro is not None: | |
| 696 self.intro = intro | |
| 697 if self.intro: | |
| 698 self.stdout.write(str(self.intro)+"\n") | |
| 699 stop = None | |
| 700 while not stop: | |
| 701 if self.cmdqueue: | |
| 702 line = self.cmdqueue.pop(0) | |
| 703 else: | |
| 704 line = self.pseudo_raw_input(self.prompt) | |
| 705 if (self.echo) and (isinstance(self.stdin, file)): | |
| 706 self.stdout.write(line + '\n') | |
| 707 line = self.precmd(line) | |
| 708 stop = self.onecmd(line) | |
| 709 stop = self.postcmd(stop, line) | |
| 710 self.postloop() | |
| 711 finally: | |
| 712 if self.use_rawinput and self.completekey: | |
| 713 try: | |
| 714 import readline | |
| 715 readline.set_completer(self.old_completer) | |
| 716 except ImportError: | |
| 717 pass | |
| 718 return stop | |
| 719 | |
| 720 def do_EOF(self, arg): | |
| 721 return True | |
| 722 do_eof = do_EOF | |
| 723 | |
| 724 def showParam(self, param): | |
| 725 any_shown = False | |
| 726 param = param.strip().lower() | |
| 727 for p in self.settable: | |
| 728 if p.startswith(param): | |
| 729 val = getattr(self, p) | |
| 730 self.stdout.write('%s: %s\n' % (p, str(getattr(self, p)))) | |
| 731 any_shown = True | |
| 732 if not any_shown: | |
| 733 print "Parameter '%s' not supported (type 'show' for list of parameters)." % param | |
| 734 | |
| 735 def do_quit(self, arg): | |
| 736 return self._STOP_AND_EXIT | |
| 737 do_exit = do_quit | |
| 738 do_q = do_quit | |
| 739 | |
| 740 def do_show(self, arg): | |
| 741 '''Shows value of a parameter.''' | |
| 742 if arg.strip(): | |
| 743 self.showParam(arg) | |
| 744 else: | |
| 745 for param in self.settable: | |
| 746 self.showParam(param) | |
| 747 | |
| 748 def do_set(self, arg): | |
| 749 '''Sets a cmd2 parameter. Accepts abbreviated parameter names so long as there is no ambiguity. | |
| 750 Call without arguments for a list of settable parameters with their values.''' | |
| 751 try: | |
| 752 paramName, val = arg.split(None, 1) | |
| 753 paramName = paramName.strip().lower() | |
| 754 hits = [paramName in p for p in self.settable] | |
| 755 if hits.count(True) == 1: | |
| 756 paramName = self.settable[hits.index(True)] | |
| 757 currentVal = getattr(self, paramName) | |
| 758 if (val[0] == val[-1]) and val[0] in ("'", '"'): | |
| 759 val = val[1:-1] | |
| 760 else: | |
| 761 val = cast(currentVal, val) | |
| 762 setattr(self, paramName, val) | |
| 763 self.stdout.write('%s - was: %s\nnow: %s\n' % (paramName, currentVal, val)) | |
| 764 if currentVal != val: | |
| 765 try: | |
| 766 onchange_hook = getattr(self, '_onchange_%s' % paramName) | |
| 767 onchange_hook(old=currentVal, new=val) | |
| 768 except AttributeError: | |
| 769 pass | |
| 770 else: | |
| 771 self.do_show(paramName) | |
| 772 except (ValueError, AttributeError, NotSettableError), e: | |
| 773 self.do_show(arg) | |
| 774 | |
| 775 def do_pause(self, arg): | |
| 776 'Displays the specified text then waits for the user to press RETURN.' | |
| 777 raw_input(arg + '\n') | |
| 778 | |
| 779 def do_shell(self, arg): | |
| 780 'execute a command as if at the OS prompt.' | |
| 781 os.system(arg) | |
| 782 | |
| 231 | 783 def _attempt_py_command(self, arg): |
| 784 try: | |
| 785 result = eval(arg, self.pystate) | |
| 786 print repr(result) | |
| 787 except SyntaxError: | |
| 788 exec(arg, self.pystate) | |
| 789 return | |
| 790 | |
| 233 | 791 def do_py(self, arg): |
| 230 | 792 ''' |
| 793 py <command>: Executes a Python command. | |
| 242 | 794 py: Enters interactive Python mode. |
| 795 End with `Ctrl-D` (Unix) / `Ctrl-Z` (Windows), `quit()`, 'exit()`. | |
| 241 | 796 Non-python commands can be issued with `cmd("your command")`. |
| 230 | 797 ''' |
| 798 if arg.strip(): | |
|
235
78ad20c2eed0
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catherine@dellzilla
parents:
234
diff
changeset
|
799 interp = InteractiveInterpreter(locals=self.pystate) |
| 233 | 800 interp.runcode(arg) |
| 230 | 801 else: |
|
235
78ad20c2eed0
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catherine@dellzilla
parents:
234
diff
changeset
|
802 interp = MyInteractiveConsole(locals=self.pystate) |
| 233 | 803 def quit(): |
| 234 | 804 raise EmbeddedConsoleExit |
| 236 | 805 def onecmd(arg): |
| 806 return self.onecmd(arg + '\n') | |
| 233 | 807 self.pystate['quit'] = quit |
| 808 self.pystate['exit'] = quit | |
| 236 | 809 self.pystate[self.nonpythoncommand] = onecmd |
| 234 | 810 try: |
| 240 | 811 cprt = 'Type "help", "copyright", "credits" or "license" for more information.' |
| 812 interp.interact(banner= "Python %s on %s\n%s\n(%s)\n%s" % | |
| 813 (sys.version, sys.platform, cprt, self.__class__.__name__, self.do_py.__doc__)) | |
|
235
78ad20c2eed0
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catherine@dellzilla
parents:
234
diff
changeset
|
814 except EmbeddedConsoleExit: |
| 234 | 815 return |
| 233 | 816 |
| 230 | 817 def do_history(self, arg): |
| 818 """history [arg]: lists past commands issued | |
| 819 | |
| 820 no arg -> list all | |
| 821 arg is integer -> list one history item, by index | |
| 822 arg is string -> string search | |
| 823 arg is /enclosed in forward-slashes/ -> regular expression search | |
| 824 """ | |
| 825 if arg: | |
| 826 history = self.history.get(arg) | |
| 827 else: | |
| 828 history = self.history | |
| 829 for hi in history: | |
| 830 self.stdout.write(hi.pr()) | |
| 831 def last_matching(self, arg): | |
| 832 try: | |
| 833 if arg: | |
| 834 return self.history.get(arg)[-1] | |
| 835 else: | |
| 836 return self.history[-1] | |
| 837 except IndexError: | |
| 838 return None | |
| 839 def do_list(self, arg): | |
| 840 """list [arg]: lists last command issued | |
| 841 | |
| 842 no arg -> list absolute last | |
| 843 arg is integer -> list one history item, by index | |
| 844 - arg, arg - (integer) -> list up to or after #arg | |
| 845 arg is string -> list last command matching string search | |
| 846 arg is /enclosed in forward-slashes/ -> regular expression search | |
| 847 """ | |
| 848 try: | |
| 849 self.stdout.write(self.last_matching(arg).pr()) | |
| 850 except: | |
| 851 pass | |
| 852 do_hi = do_history | |
| 853 do_l = do_list | |
| 854 do_li = do_list | |
| 855 | |
| 856 def do_ed(self, arg): | |
| 857 """ed: edit most recent command in text editor | |
| 858 ed [N]: edit numbered command from history | |
| 859 ed [filename]: edit specified file name | |
| 860 | |
| 861 commands are run after editor is closed. | |
| 862 "set edit (program-name)" or set EDITOR environment variable | |
| 863 to control which editing program is used.""" | |
| 864 if not self.editor: | |
| 865 print "please use 'set editor' to specify your text editing program of choice." | |
| 866 return | |
| 867 filename = self.default_file_name | |
| 868 if arg: | |
| 869 try: | |
| 870 buffer = self.last_matching(int(arg)) | |
| 871 except ValueError: | |
| 872 filename = arg | |
| 873 buffer = '' | |
| 874 else: | |
| 875 buffer = self.history[-1] | |
| 876 | |
| 877 if buffer: | |
| 878 f = open(os.path.expanduser(filename), 'w') | |
| 879 f.write(buffer or '') | |
| 880 f.close() | |
| 881 | |
| 882 os.system('%s %s' % (self.editor, filename)) | |
| 883 self.do__load(filename) | |
| 884 do_edit = do_ed | |
| 885 | |
| 886 saveparser = (pyparsing.Optional(pyparsing.Word(pyparsing.nums)^'*')("idx") + | |
| 887 pyparsing.Optional(pyparsing.Word(legalChars + '/\\'))("fname") + | |
| 888 pyparsing.stringEnd) | |
| 889 def do_save(self, arg): | |
| 890 """`save [N] [filename.ext]` | |
| 891 Saves command from history to file. | |
| 892 N => Number of command (from history), or `*`; | |
| 893 most recent command if omitted""" | |
| 894 | |
| 895 try: | |
| 896 args = self.saveparser.parseString(arg) | |
| 897 except pyparsing.ParseException: | |
| 898 print self.do_save.__doc__ | |
| 899 return | |
| 900 fname = args.fname or self.default_file_name | |
| 901 if args.idx == '*': | |
| 902 saveme = '\n\n'.join(self.history[:]) | |
| 903 elif args.idx: | |
| 904 saveme = self.history[int(args.idx)-1] | |
| 905 else: | |
| 906 saveme = self.history[-1] | |
| 907 try: | |
| 908 f = open(os.path.expanduser(fname), 'w') | |
| 909 f.write(saveme) | |
| 910 f.close() | |
| 911 print 'Saved to %s' % (fname) | |
| 912 except Exception, e: | |
| 913 print 'Error saving %s: %s' % (fname, str(e)) | |
| 914 | |
| 915 urlre = re.compile('(https?://[-\\w\\./]+)') | |
| 916 def do_load(self, fname=None): | |
| 917 """Runs script of command(s) from a file or URL.""" | |
| 918 if fname is None: | |
| 919 fname = self.default_file_name | |
| 920 keepstate = Statekeeper(self, ('stdin','use_rawinput','prompt','continuation_prompt')) | |
| 921 try: | |
| 922 if isinstance(fname, file): | |
| 923 target = open(fname, 'r') | |
| 924 else: | |
| 925 match = self.urlre.match(fname) | |
| 926 if match: | |
| 927 target = urllib.urlopen(match.group(1)) | |
| 928 else: | |
| 929 fname = os.path.expanduser(fname) | |
| 930 try: | |
| 931 target = open(os.path.expanduser(fname), 'r') | |
| 932 except IOError, e: | |
| 933 target = open('%s.%s' % (os.path.expanduser(fname), | |
| 934 self.defaultExtension), 'r') | |
| 935 except IOError, e: | |
| 936 print 'Problem accessing script from %s: \n%s' % (fname, e) | |
| 937 keepstate.restore() | |
| 938 return | |
| 939 self.stdin = target | |
| 940 self.use_rawinput = False | |
| 941 self.prompt = self.continuation_prompt = '' | |
| 942 stop = self.cmdloop() | |
| 943 self.stdin.close() | |
| 944 keepstate.restore() | |
| 945 self.lastcmd = '' | |
| 946 return (stop == self._STOP_AND_EXIT) and self._STOP_AND_EXIT | |
| 947 do__load = do_load # avoid an unfortunate legacy use of do_load from sqlpython | |
| 948 | |
| 949 def do_run(self, arg): | |
| 950 """run [arg]: re-runs an earlier command | |
| 951 | |
| 952 no arg -> run most recent command | |
| 953 arg is integer -> run one history item, by index | |
| 954 arg is string -> run most recent command by string search | |
| 955 arg is /enclosed in forward-slashes/ -> run most recent by regex | |
| 956 """ | |
| 957 'run [N]: runs the SQL that was run N commands ago' | |
| 958 runme = self.last_matching(arg) | |
| 959 print runme | |
| 960 if runme: | |
| 961 runme = self.precmd(runme) | |
| 962 stop = self.onecmd(runme) | |
| 963 stop = self.postcmd(stop, runme) | |
| 964 do_r = do_run | |
| 965 | |
| 966 def fileimport(self, statement, source): | |
| 967 try: | |
| 968 f = open(os.path.expanduser(source)) | |
| 969 except IOError: | |
| 970 self.stdout.write("Couldn't read from file %s\n" % source) | |
| 971 return '' | |
| 972 data = f.read() | |
| 973 f.close() | |
| 974 return data | |
| 975 | |
| 976 class HistoryItem(str): | |
| 977 def __init__(self, instr): | |
| 978 str.__init__(self) | |
| 979 self.lowercase = self.lower() | |
| 980 self.idx = None | |
| 981 def pr(self): | |
| 982 return '-------------------------[%d]\n%s\n' % (self.idx, str(self)) | |
| 983 | |
| 984 class History(list): | |
| 985 rangeFrom = re.compile(r'^([\d])+\s*\-$') | |
| 986 def append(self, new): | |
| 987 new = HistoryItem(new) | |
| 988 list.append(self, new) | |
| 989 new.idx = len(self) | |
| 990 def extend(self, new): | |
| 991 for n in new: | |
| 992 self.append(n) | |
| 993 def get(self, getme): | |
| 994 try: | |
| 995 getme = int(getme) | |
| 996 if getme < 0: | |
| 997 return self[:(-1 * getme)] | |
| 998 else: | |
| 999 return [self[getme-1]] | |
| 1000 except IndexError: | |
| 1001 return [] | |
| 1002 except (ValueError, TypeError): | |
| 1003 getme = getme.strip() | |
| 1004 mtch = self.rangeFrom.search(getme) | |
| 1005 if mtch: | |
| 1006 return self[(int(mtch.group(1))-1):] | |
| 1007 if getme.startswith(r'/') and getme.endswith(r'/'): | |
| 1008 finder = re.compile(getme[1:-1], re.DOTALL | re.MULTILINE | re.IGNORECASE) | |
| 1009 def isin(hi): | |
| 1010 return finder.search(hi) | |
| 1011 else: | |
| 1012 def isin(hi): | |
| 1013 return (getme.lower() in hi.lowercase) | |
| 1014 return [itm for itm in self if isin(itm)] | |
| 1015 | |
| 1016 class NotSettableError(Exception): | |
| 1017 pass | |
| 1018 | |
| 1019 def cast(current, new): | |
| 1020 """Tries to force a new value into the same type as the current.""" | |
| 1021 typ = type(current) | |
| 1022 if typ == bool: | |
| 1023 try: | |
| 1024 return bool(int(new)) | |
| 1025 except ValueError, TypeError: | |
| 1026 pass | |
| 1027 try: | |
| 1028 new = new.lower() | |
| 1029 except: | |
| 1030 pass | |
| 1031 if (new=='on') or (new[0] in ('y','t')): | |
| 1032 return True | |
| 1033 if (new=='off') or (new[0] in ('n','f')): | |
| 1034 return False | |
| 1035 else: | |
| 1036 try: | |
| 1037 return typ(new) | |
| 1038 except: | |
| 1039 pass | |
| 1040 print "Problem setting parameter (now %s) to %s; incorrect type?" % (current, new) | |
| 1041 return current | |
| 1042 | |
| 1043 class Statekeeper(object): | |
| 1044 def __init__(self, obj, attribs): | |
| 1045 self.obj = obj | |
| 1046 self.attribs = attribs | |
| 1047 self.save() | |
| 1048 def save(self): | |
| 1049 for attrib in self.attribs: | |
| 1050 setattr(self, attrib, getattr(self.obj, attrib)) | |
| 1051 def restore(self): | |
| 1052 for attrib in self.attribs: | |
| 1053 setattr(self.obj, attrib, getattr(self, attrib)) | |
| 1054 | |
| 1055 class Borg(object): | |
| 1056 '''All instances of any Borg subclass will share state. | |
| 1057 from Python Cookbook, 2nd Ed., recipe 6.16''' | |
| 1058 _shared_state = {} | |
| 1059 def __new__(cls, *a, **k): | |
| 1060 obj = object.__new__(cls, *a, **k) | |
| 1061 obj.__dict__ = cls._shared_state | |
| 1062 return obj | |
| 1063 | |
| 1064 class OutputTrap(Borg): | |
| 1065 '''Instantiate an OutputTrap to divert/capture ALL stdout output. For use in unit testing. | |
| 1066 Call `tearDown()` to return to normal output.''' | |
| 1067 def __init__(self): | |
| 1068 self.old_stdout = sys.stdout | |
| 1069 self.trap = tempfile.TemporaryFile() | |
| 1070 sys.stdout = self.trap | |
| 1071 def read(self): | |
| 1072 self.trap.seek(0) | |
| 1073 result = self.trap.read() | |
| 1074 self.trap.truncate(0) | |
| 1075 return result.strip('\x00') | |
| 1076 def tearDown(self): | |
| 1077 sys.stdout = self.old_stdout | |
| 1078 | |
| 1079 class Cmd2TestCase(unittest.TestCase): | |
| 1080 '''Subclass this, setting CmdApp and transcriptFileName, to make a unittest.TestCase class | |
| 1081 that will execute the commands in transcriptFileName and expect the results shown. | |
| 1082 See example.py''' | |
| 1083 CmdApp = None | |
| 1084 transcriptFileName = '' | |
| 1085 def setUp(self): | |
| 1086 if self.CmdApp: | |
| 1087 self.outputTrap = OutputTrap() | |
| 1088 self.cmdapp = self.CmdApp() | |
| 1089 try: | |
| 1090 tfile = open(os.path.expanduser(self.transcriptFileName)) | |
| 1091 self.transcript = iter(tfile.readlines()) | |
| 1092 tfile.close() | |
| 1093 except IOError: | |
| 1094 self.transcript = [] | |
| 1095 def assertEqualEnough(self, got, expected, message): | |
| 1096 got = got.strip().splitlines() | |
| 1097 expected = expected.strip().splitlines() | |
| 1098 self.assertEqual(len(got), len(expected), message) | |
| 1099 for (linegot, lineexpected) in zip(got, expected): | |
| 1100 matchme = re.escape(lineexpected.strip()).replace('\\*', '.*'). \ | |
| 1101 replace('\\ ', ' ') | |
| 1102 self.assert_(re.match(matchme, linegot.strip()), message) | |
| 1103 def testall(self): | |
| 1104 if self.CmdApp: | |
| 1105 lineNum = 0 | |
| 1106 try: | |
| 1107 line = self.transcript.next() | |
| 1108 while True: | |
| 1109 while not line.startswith(self.cmdapp.prompt): | |
| 1110 line = self.transcript.next() | |
| 1111 command = [line[len(self.cmdapp.prompt):]] | |
| 1112 line = self.transcript.next() | |
| 1113 while line.startswith(self.cmdapp.continuation_prompt): | |
| 1114 command.append(line[len(self.cmdapp.continuation_prompt):]) | |
| 1115 line = self.transcript.next() | |
| 1116 command = ''.join(command) | |
| 1117 self.cmdapp.onecmd(command) | |
| 1118 result = self.outputTrap.read() | |
| 1119 if line.startswith(self.cmdapp.prompt): | |
| 1120 self.assertEqualEnough(result.strip(), '', | |
| 1121 '\nFile %s, line %d\nCommand was:\n%s\nExpected: (nothing) \nGot:\n%s\n' % | |
| 1122 (self.transcriptFileName, lineNum, command, result)) | |
| 1123 continue | |
| 1124 expected = [] | |
| 1125 while not line.startswith(self.cmdapp.prompt): | |
| 1126 expected.append(line) | |
| 1127 line = self.transcript.next() | |
| 1128 expected = ''.join(expected) | |
| 1129 self.assertEqualEnough(expected.strip(), result.strip(), | |
| 1130 '\nFile %s, line %d\nCommand was:\n%s\nExpected:\n%s\nGot:\n%s\n' % | |
| 1131 (self.transcriptFileName, lineNum, command, expected, result)) | |
| 1132 # this needs to account for a line-by-line strip()ping | |
| 1133 except StopIteration: | |
| 1134 pass | |
| 1135 # catch the final output? | |
| 1136 def tearDown(self): | |
| 1137 if self.CmdApp: | |
| 1138 self.outputTrap.tearDown() | |
| 1139 | |
| 1140 if __name__ == '__main__': | |
| 1141 doctest.testmod(optionflags = doctest.NORMALIZE_WHITESPACE) | |
| 1142 #c = Cmd() |