Mercurial > python-cmd2
annotate cmd2.py @ 254:07dff0ba981e
multiple test files
| author | Catherine Devlin <catherine.devlin@gmail.com> |
|---|---|
| date | Wed, 01 Apr 2009 18:05:51 -0400 |
| parents | 24289178b367 |
| children | 573bf9c2a043 |
| 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 """ | |
| 25 import cmd, re, os, sys, optparse, subprocess, tempfile, pyparsing, doctest | |
|
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26 import unittest, string, datetime, urllib, glob |
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27 from code import InteractiveConsole, InteractiveInterpreter, softspace |
| 230 | 28 from optparse import make_option |
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29 __version__ = '0.5.1' |
| 230 | 30 |
| 31 class OptionParser(optparse.OptionParser): | |
| 32 def exit(self, status=0, msg=None): | |
| 33 self.values._exit = True | |
| 34 if msg: | |
| 35 print msg | |
| 36 | |
| 37 def print_help(self, *args, **kwargs): | |
| 38 # now, I need to call help of the calling function. Hmm. | |
| 39 try: | |
| 40 print self._func.__doc__ | |
| 41 except AttributeError: | |
| 42 pass | |
| 43 optparse.OptionParser.print_help(self, *args, **kwargs) | |
| 44 | |
| 45 def error(self, msg): | |
| 46 """error(msg : string) | |
| 47 | |
| 48 Print a usage message incorporating 'msg' to stderr and exit. | |
| 49 If you override this in a subclass, it should not return -- it | |
| 50 should either exit or raise an exception. | |
| 51 """ | |
| 52 raise | |
| 53 | |
| 54 def remainingArgs(oldArgs, newArgList): | |
| 55 ''' | |
| 56 >>> remainingArgs('-f bar bar cow', ['bar', 'cow']) | |
| 57 'bar cow' | |
| 58 ''' | |
| 59 pattern = '\s+'.join(re.escape(a) for a in newArgList) + '\s*$' | |
| 60 matchObj = re.search(pattern, oldArgs) | |
| 61 return oldArgs[matchObj.start():] | |
| 62 | |
| 63 def options(option_list): | |
| 64 def option_setup(func): | |
| 65 optionParser = OptionParser() | |
| 66 for opt in option_list: | |
| 67 optionParser.add_option(opt) | |
| 68 optionParser.set_usage("%s [options] arg" % func.__name__.strip('do_')) | |
| 69 optionParser._func = func | |
| 70 def newFunc(instance, arg): | |
| 71 try: | |
| 72 opts, newArgList = optionParser.parse_args(arg.split()) # doesn't understand quoted strings shouldn't be dissected! | |
| 73 newArgs = remainingArgs(arg, newArgList) # should it permit flags after args? | |
| 74 except (optparse.OptionValueError, optparse.BadOptionError, | |
| 75 optparse.OptionError, optparse.AmbiguousOptionError, | |
| 76 optparse.OptionConflictError), e: | |
| 77 print e | |
| 78 optionParser.print_help() | |
| 79 return | |
| 80 if hasattr(opts, '_exit'): | |
| 81 return None | |
| 82 if hasattr(arg, 'parser'): | |
| 83 terminator = arg.parsed.terminator | |
| 84 try: | |
| 85 if arg.parsed.terminator[0] == '\n': | |
| 86 terminator = arg.parsed.terminator[0] | |
| 87 except IndexError: | |
| 88 pass | |
| 89 arg = arg.parser('%s %s%s%s' % (arg.parsed.command, newArgs, | |
| 90 terminator, arg.parsed.suffix)) | |
| 91 else: | |
| 92 arg = newArgs | |
| 93 result = func(instance, arg, opts) | |
| 94 return result | |
| 95 newFunc.__doc__ = '%s\n%s' % (func.__doc__, optionParser.format_help()) | |
| 96 return newFunc | |
| 97 return option_setup | |
| 98 | |
| 99 class PasteBufferError(EnvironmentError): | |
| 100 if sys.platform[:3] == 'win': | |
| 101 errmsg = """Redirecting to or from paste buffer requires pywin32 | |
| 102 to be installed on operating system. | |
| 103 Download from http://sourceforge.net/projects/pywin32/""" | |
| 104 else: | |
| 105 errmsg = """Redirecting to or from paste buffer requires xclip | |
| 106 to be installed on operating system. | |
| 107 On Debian/Ubuntu, 'sudo apt-get install xclip' will install it.""" | |
| 108 def __init__(self): | |
| 109 Exception.__init__(self, self.errmsg) | |
| 110 | |
| 111 '''check here if functions exist; otherwise, stub out''' | |
| 112 pastebufferr = """Redirecting to or from paste buffer requires %s | |
| 113 to be installed on operating system. | |
| 114 %s""" | |
| 115 if subprocess.mswindows: | |
| 116 try: | |
| 117 import win32clipboard | |
| 118 def getPasteBuffer(): | |
| 119 win32clipboard.OpenClipboard(0) | |
| 120 try: | |
| 121 result = win32clipboard.GetClipboardData() | |
| 122 except TypeError: | |
| 123 result = '' #non-text | |
| 124 win32clipboard.CloseClipboard() | |
| 125 return result | |
| 126 def writeToPasteBuffer(txt): | |
| 127 win32clipboard.OpenClipboard(0) | |
| 128 win32clipboard.EmptyClipboard() | |
| 129 win32clipboard.SetClipboardText(txt) | |
| 130 win32clipboard.CloseClipboard() | |
| 131 except ImportError: | |
| 132 def getPasteBuffer(*args): | |
| 133 raise OSError, pastebufferr % ('pywin32', 'Download from http://sourceforge.net/projects/pywin32/') | |
| 134 setPasteBuffer = getPasteBuffer | |
| 135 else: | |
| 136 can_clip = False | |
| 137 try: | |
| 138 subprocess.check_call('xclip -o -sel clip', shell=True, stdout=subprocess.PIPE, stdin=subprocess.PIPE) | |
| 139 can_clip = True | |
| 140 except AttributeError: # check_call not defined, Python < 2.5 | |
| 141 teststring = 'Testing for presence of xclip.' | |
| 142 xclipproc = subprocess.Popen('xclip -sel clip', shell=True, stdout=subprocess.PIPE, stdin=subprocess.PIPE) | |
| 143 xclipproc.stdin.write(teststring) | |
| 144 xclipproc.stdin.close() | |
| 145 xclipproc = subprocess.Popen('xclip -o -sel clip', shell=True, stdout=subprocess.PIPE, stdin=subprocess.PIPE) | |
| 146 if xclipproc.stdout.read() == teststring: | |
| 147 can_clip = True | |
| 148 except (subprocess.CalledProcessError, OSError, IOError): | |
| 149 pass | |
| 150 if can_clip: | |
| 151 def getPasteBuffer(): | |
| 152 xclipproc = subprocess.Popen('xclip -o -sel clip', shell=True, stdout=subprocess.PIPE, stdin=subprocess.PIPE) | |
| 153 return xclipproc.stdout.read() | |
| 154 def writeToPasteBuffer(txt): | |
| 155 xclipproc = subprocess.Popen('xclip -sel clip', shell=True, stdout=subprocess.PIPE, stdin=subprocess.PIPE) | |
| 156 xclipproc.stdin.write(txt) | |
| 157 xclipproc.stdin.close() | |
| 158 # but we want it in both the "primary" and "mouse" clipboards | |
| 159 xclipproc = subprocess.Popen('xclip', shell=True, stdout=subprocess.PIPE, stdin=subprocess.PIPE) | |
| 160 xclipproc.stdin.write(txt) | |
| 161 xclipproc.stdin.close() | |
| 162 else: | |
| 163 def getPasteBuffer(*args): | |
| 164 raise OSError, pastebufferr % ('xclip', 'On Debian/Ubuntu, install with "sudo apt-get install xclip"') | |
| 165 setPasteBuffer = getPasteBuffer | |
| 166 writeToPasteBuffer = getPasteBuffer | |
| 167 | |
| 168 pyparsing.ParserElement.setDefaultWhitespaceChars(' \t') | |
| 169 | |
| 170 class ParsedString(str): | |
| 171 pass | |
| 172 | |
| 173 class SkipToLast(pyparsing.SkipTo): | |
| 174 def parseImpl( self, instring, loc, doActions=True ): | |
| 175 resultStore = [] | |
| 176 startLoc = loc | |
| 177 instrlen = len(instring) | |
| 178 expr = self.expr | |
| 179 failParse = False | |
| 180 while loc <= instrlen: | |
| 181 try: | |
| 182 if self.failOn: | |
| 183 failParse = True | |
| 184 self.failOn.tryParse(instring, loc) | |
| 185 failParse = False | |
| 186 loc = expr._skipIgnorables( instring, loc ) | |
| 187 expr._parse( instring, loc, doActions=False, callPreParse=False ) | |
| 188 skipText = instring[startLoc:loc] | |
| 189 if self.includeMatch: | |
| 190 loc,mat = expr._parse(instring,loc,doActions,callPreParse=False) | |
| 191 if mat: | |
| 192 skipRes = ParseResults( skipText ) | |
| 193 skipRes += mat | |
| 194 resultStore.append((loc, [ skipRes ])) | |
| 195 else: | |
| 196 resultStore,append((loc, [ skipText ])) | |
| 197 else: | |
| 198 resultStore.append((loc, [ skipText ])) | |
| 199 loc += 1 | |
| 200 except (pyparsing.ParseException,IndexError): | |
| 201 if failParse: | |
| 202 raise | |
| 203 else: | |
| 204 loc += 1 | |
| 205 if resultStore: | |
| 206 return resultStore[-1] | |
| 207 else: | |
| 208 exc = self.myException | |
| 209 exc.loc = loc | |
| 210 exc.pstr = instring | |
| 211 raise exc | |
| 212 | |
| 213 def replace_with_file_contents(fname): | |
| 214 if fname: | |
| 215 try: | |
| 216 result = open(os.path.expanduser(fname[0])).read() | |
| 217 except IOError: | |
| 218 result = '< %s' % fname[0] # wasn't a file after all | |
| 219 else: | |
| 220 result = getPasteBuffer() | |
| 233 | 221 return result |
| 222 | |
| 234 | 223 class EmbeddedConsoleExit(Exception): |
| 224 pass | |
| 225 | |
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226 class MyInteractiveConsole(InteractiveConsole): |
| 234 | 227 def runcode(self, code): |
| 228 """Execute a code object. | |
| 229 | |
| 230 When an exception occurs, self.showtraceback() is called to | |
| 231 display a traceback. All exceptions are caught except | |
| 232 SystemExit, which is reraised. | |
| 233 | |
| 234 A note about KeyboardInterrupt: this exception may occur | |
| 235 elsewhere in this code, and may not always be caught. The | |
| 236 caller should be prepared to deal with it. | |
| 237 | |
| 238 Copied directly from code.InteractiveInterpreter, except for | |
| 239 EmbeddedConsoleExit exceptions. | |
| 240 """ | |
| 241 try: | |
| 242 exec code in self.locals | |
| 243 except (SystemExit, EmbeddedConsoleExit): | |
| 244 raise | |
| 245 except: | |
| 246 self.showtraceback() | |
| 247 else: | |
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248 if softspace(sys.stdout, 0): |
| 234 | 249 print |
| 250 | |
| 230 | 251 class Cmd(cmd.Cmd): |
| 252 echo = False | |
| 253 case_insensitive = True | |
| 254 continuation_prompt = '> ' | |
| 255 timing = False | |
| 256 legalChars = '!#$%.:?@_' + pyparsing.alphanums + pyparsing.alphas8bit # make sure your terminators are not in here! | |
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257 shortcuts = {'?': 'help', '!': 'shell', '@': 'load', '@@': '_relative_load'} |
| 230 | 258 excludeFromHistory = '''run r list l history hi ed edit li eof'''.split() |
| 259 noSpecialParse = 'set ed edit exit'.split() | |
| 260 defaultExtension = 'txt' | |
| 261 default_file_name = 'command.txt' | |
| 262 abbrev = True | |
| 233 | 263 nonpythoncommand = 'cmd' |
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264 current_script_dir = None |
| 245 | 265 reserved_words = [] |
| 230 | 266 settable = ['prompt', 'continuation_prompt', 'default_file_name', 'editor', |
| 245 | 267 'case_insensitive', 'echo', 'timing', 'abbrev'] |
| 230 | 268 settable.sort() |
| 269 | |
| 270 editor = os.environ.get('EDITOR') | |
| 271 _STOP_AND_EXIT = 2 | |
| 272 if not editor: | |
| 273 if sys.platform[:3] == 'win': | |
| 274 editor = 'notepad' | |
| 275 else: | |
| 276 for editor in ['gedit', 'kate', 'vim', 'emacs', 'nano', 'pico']: | |
| 277 if not os.system('which %s' % (editor)): | |
| 278 break | |
| 279 | |
| 280 def do_cmdenvironment(self, args): | |
| 281 '''Summary report of interactive parameters.''' | |
| 282 self.stdout.write(""" | |
| 283 Commands are %(casesensitive)scase-sensitive. | |
| 284 Commands may be terminated with: %(terminators)s | |
| 237 | 285 Settable parameters: %(settable)s\n""" % \ |
| 230 | 286 { 'casesensitive': (self.case_insensitive and 'not ') or '', |
| 287 'terminators': str(self.terminators), | |
| 288 'settable': ' '.join(self.settable) | |
| 289 }) | |
| 290 | |
| 291 def do_help(self, arg): | |
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292 funcname = self.func_named(arg) |
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293 if funcname: |
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294 fn = getattr(self, funcname) |
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295 try: |
| 230 | 296 fn.optionParser.print_help(file=self.stdout) |
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297 except AttributeError: |
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298 cmd.Cmd.do_help(self, funcname[3:]) |
| 230 | 299 |
| 300 def __init__(self, *args, **kwargs): | |
| 301 cmd.Cmd.__init__(self, *args, **kwargs) | |
| 302 self.history = History() | |
| 303 self._init_parser() | |
| 304 self.pystate = {} | |
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305 self.shortcuts = sorted(self.shortcuts.items(), reverse=True) |
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306 self.keywords = self.reserved_words + [fname[3:] for fname in dir(self) |
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307 if fname.startswith('do_')] |
| 230 | 308 def do_shortcuts(self, args): |
| 309 """Lists single-key shortcuts available.""" | |
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310 result = "\n".join('%s: %s' % (sc[0], sc[1]) for sc in sorted(self.shortcuts)) |
| 230 | 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: '') | |
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316 commentInProgress = pyparsing.Literal('/*') + pyparsing.SkipTo(pyparsing.stringEnd) |
| 230 | 317 terminators = [';'] |
| 318 blankLinesAllowed = False | |
| 319 multilineCommands = [] | |
| 320 | |
| 321 def _init_parser(self): | |
| 322 r''' | |
| 323 >>> c = Cmd() | |
| 324 >>> c.multilineCommands = ['multiline'] | |
| 325 >>> c.case_insensitive = True | |
| 326 >>> c._init_parser() | |
| 327 >>> print c.parser.parseString('').dump() | |
| 328 [] | |
| 329 >>> print c.parser.parseString('/* empty command */').dump() | |
| 330 [] | |
| 331 >>> print c.parser.parseString('plainword').dump() | |
| 332 ['plainword', ''] | |
| 333 - command: plainword | |
| 334 - statement: ['plainword', ''] | |
| 335 - command: plainword | |
| 336 >>> print c.parser.parseString('termbare;').dump() | |
| 337 ['termbare', '', ';', ''] | |
| 338 - command: termbare | |
| 339 - statement: ['termbare', '', ';'] | |
| 340 - command: termbare | |
| 341 - terminator: ; | |
| 342 - terminator: ; | |
| 343 >>> print c.parser.parseString('termbare; suffx').dump() | |
| 344 ['termbare', '', ';', 'suffx'] | |
| 345 - command: termbare | |
| 346 - statement: ['termbare', '', ';'] | |
| 347 - command: termbare | |
| 348 - terminator: ; | |
| 349 - suffix: suffx | |
| 350 - terminator: ; | |
| 351 >>> print c.parser.parseString('barecommand').dump() | |
| 352 ['barecommand', ''] | |
| 353 - command: barecommand | |
| 354 - statement: ['barecommand', ''] | |
| 355 - command: barecommand | |
| 356 >>> print c.parser.parseString('COMmand with args').dump() | |
| 357 ['command', 'with args'] | |
| 358 - args: with args | |
| 359 - command: command | |
| 360 - statement: ['command', 'with args'] | |
| 361 - args: with args | |
| 362 - command: command | |
| 363 >>> print c.parser.parseString('command with args and terminator; and suffix').dump() | |
| 364 ['command', 'with args and terminator', ';', 'and suffix'] | |
| 365 - args: with args and terminator | |
| 366 - command: command | |
| 367 - statement: ['command', 'with args and terminator', ';'] | |
| 368 - args: with args and terminator | |
| 369 - command: command | |
| 370 - terminator: ; | |
| 371 - suffix: and suffix | |
| 372 - terminator: ; | |
| 373 >>> print c.parser.parseString('simple | piped').dump() | |
| 374 ['simple', '', '|', ' piped'] | |
| 375 - command: simple | |
| 376 - pipeTo: piped | |
| 377 - statement: ['simple', ''] | |
| 378 - command: simple | |
| 379 >>> print c.parser.parseString('double-pipe || is not a pipe').dump() | |
| 380 ['double', '-pipe || is not a pipe'] | |
| 381 - args: -pipe || is not a pipe | |
| 382 - command: double | |
| 383 - statement: ['double', '-pipe || is not a pipe'] | |
| 384 - args: -pipe || is not a pipe | |
| 385 - command: double | |
| 386 >>> print c.parser.parseString('command with args, terminator;sufx | piped').dump() | |
| 387 ['command', 'with args, terminator', ';', 'sufx', '|', ' piped'] | |
| 388 - args: with args, terminator | |
| 389 - command: command | |
| 390 - pipeTo: piped | |
| 391 - statement: ['command', 'with args, terminator', ';'] | |
| 392 - args: with args, terminator | |
| 393 - command: command | |
| 394 - terminator: ; | |
| 395 - suffix: sufx | |
| 396 - terminator: ; | |
| 397 >>> print c.parser.parseString('output into > afile.txt').dump() | |
| 398 ['output', 'into', '>', 'afile.txt'] | |
| 399 - args: into | |
| 400 - command: output | |
| 401 - output: > | |
| 402 - outputTo: afile.txt | |
| 403 - statement: ['output', 'into'] | |
| 404 - args: into | |
| 405 - command: output | |
| 406 >>> print c.parser.parseString('output into;sufx | pipethrume plz > afile.txt').dump() | |
| 407 ['output', 'into', ';', 'sufx', '|', ' pipethrume plz', '>', 'afile.txt'] | |
| 408 - args: into | |
| 409 - command: output | |
| 410 - output: > | |
| 411 - outputTo: afile.txt | |
| 412 - pipeTo: pipethrume plz | |
| 413 - statement: ['output', 'into', ';'] | |
| 414 - args: into | |
| 415 - command: output | |
| 416 - terminator: ; | |
| 417 - suffix: sufx | |
| 418 - terminator: ; | |
| 419 >>> print c.parser.parseString('output to paste buffer >> ').dump() | |
| 420 ['output', 'to paste buffer', '>>', ''] | |
| 421 - args: to paste buffer | |
| 422 - command: output | |
| 423 - output: >> | |
| 424 - statement: ['output', 'to paste buffer'] | |
| 425 - args: to paste buffer | |
| 426 - command: output | |
| 427 >>> print c.parser.parseString('ignore the /* commented | > */ stuff;').dump() | |
| 428 ['ignore', 'the /* commented | > */ stuff', ';', ''] | |
| 429 - args: the /* commented | > */ stuff | |
| 430 - command: ignore | |
| 431 - statement: ['ignore', 'the /* commented | > */ stuff', ';'] | |
| 432 - args: the /* commented | > */ stuff | |
| 433 - command: ignore | |
| 434 - terminator: ; | |
| 435 - terminator: ; | |
| 436 >>> print c.parser.parseString('has > inside;').dump() | |
| 437 ['has', '> inside', ';', ''] | |
| 438 - args: > inside | |
| 439 - command: has | |
| 440 - statement: ['has', '> inside', ';'] | |
| 441 - args: > inside | |
| 442 - command: has | |
| 443 - terminator: ; | |
| 444 - terminator: ; | |
| 445 >>> print c.parser.parseString('multiline has > inside an unfinished command').dump() | |
| 446 ['multiline', ' has > inside an unfinished command'] | |
| 447 - multilineCommand: multiline | |
| 448 >>> print c.parser.parseString('multiline has > inside;').dump() | |
| 449 ['multiline', 'has > inside', ';', ''] | |
| 450 - args: has > inside | |
| 451 - multilineCommand: multiline | |
| 452 - statement: ['multiline', 'has > inside', ';'] | |
| 453 - args: has > inside | |
| 454 - multilineCommand: multiline | |
| 455 - terminator: ; | |
| 456 - terminator: ; | |
| 457 >>> print c.parser.parseString('multiline command /* with comment in progress;').dump() | |
| 458 ['multiline', ' command /* with comment in progress;'] | |
| 459 - multilineCommand: multiline | |
| 460 >>> print c.parser.parseString('multiline command /* with comment complete */ is done;').dump() | |
| 461 ['multiline', 'command /* with comment complete */ is done', ';', ''] | |
| 462 - args: command /* with comment complete */ is done | |
| 463 - multilineCommand: multiline | |
| 464 - statement: ['multiline', 'command /* with comment complete */ is done', ';'] | |
| 465 - args: command /* with comment complete */ is done | |
| 466 - multilineCommand: multiline | |
| 467 - terminator: ; | |
| 468 - terminator: ; | |
| 469 >>> print c.parser.parseString('multiline command ends\n\n').dump() | |
| 470 ['multiline', 'command ends', '\n', '\n'] | |
| 471 - args: command ends | |
| 472 - multilineCommand: multiline | |
| 473 - statement: ['multiline', 'command ends', '\n', '\n'] | |
| 474 - args: command ends | |
| 475 - multilineCommand: multiline | |
| 476 - terminator: ['\n', '\n'] | |
| 477 - terminator: ['\n', '\n'] | |
| 478 ''' | |
| 479 outputParser = (pyparsing.Literal('>>') | (pyparsing.WordStart() + '>') | pyparsing.Regex('[^=]>'))('output') | |
| 480 | |
| 481 terminatorParser = pyparsing.Or([(hasattr(t, 'parseString') and t) or pyparsing.Literal(t) for t in self.terminators])('terminator') | |
| 482 stringEnd = pyparsing.stringEnd ^ '\nEOF' | |
| 483 self.multilineCommand = pyparsing.Or([pyparsing.Keyword(c, caseless=self.case_insensitive) for c in self.multilineCommands])('multilineCommand') | |
| 484 oneLineCommand = (~self.multilineCommand + pyparsing.Word(self.legalChars))('command') | |
| 485 pipe = pyparsing.Keyword('|', identChars='|') | |
| 486 self.commentGrammars.ignore(pyparsing.quotedString).setParseAction(lambda x: '') | |
| 487 self.commentInProgress.ignore(pyparsing.quotedString).ignore(pyparsing.cStyleComment) | |
| 488 afterElements = \ | |
| 489 pyparsing.Optional(pipe + pyparsing.SkipTo(outputParser ^ stringEnd)('pipeTo')) + \ | |
| 490 pyparsing.Optional(outputParser + pyparsing.SkipTo(stringEnd).setParseAction(lambda x: x[0].strip())('outputTo')) | |
| 491 if self.case_insensitive: | |
| 492 self.multilineCommand.setParseAction(lambda x: x[0].lower()) | |
| 493 oneLineCommand.setParseAction(lambda x: x[0].lower()) | |
| 494 if self.blankLinesAllowed: | |
| 495 self.blankLineTerminationParser = pyparsing.NoMatch | |
| 496 else: | |
| 497 self.blankLineTerminator = (pyparsing.lineEnd + pyparsing.lineEnd)('terminator') | |
| 498 self.blankLineTerminator.setResultsName('terminator') | |
| 499 self.blankLineTerminationParser = ((self.multilineCommand ^ oneLineCommand) + pyparsing.SkipTo(self.blankLineTerminator).setParseAction(lambda x: x[0].strip())('args') + self.blankLineTerminator)('statement') | |
| 500 self.multilineParser = (((self.multilineCommand ^ oneLineCommand) + SkipToLast(terminatorParser).setParseAction(lambda x: x[0].strip())('args') + terminatorParser)('statement') + | |
| 501 pyparsing.SkipTo(outputParser ^ pipe ^ stringEnd).setParseAction(lambda x: x[0].strip())('suffix') + afterElements) | |
| 250 | 502 self.multilineParser.ignore(self.commentInProgress) |
| 230 | 503 self.singleLineParser = ((oneLineCommand + pyparsing.SkipTo(terminatorParser ^ stringEnd ^ pipe ^ outputParser).setParseAction(lambda x:x[0].strip())('args'))('statement') + |
| 504 pyparsing.Optional(terminatorParser) + afterElements) | |
| 250 | 505 #self.multilineParser = self.multilineParser.setResultsName('multilineParser') |
| 506 #self.singleLineParser = self.singleLineParser.setResultsName('singleLineParser') | |
| 507 #self.blankLineTerminationParser = self.blankLineTerminationParser.setResultsName('blankLineTerminatorParser') | |
| 230 | 508 self.parser = ( |
| 509 stringEnd | | |
| 510 self.prefixParser + self.multilineParser | | |
| 511 self.prefixParser + self.singleLineParser | | |
| 512 self.prefixParser + self.blankLineTerminationParser | | |
| 513 self.prefixParser + self.multilineCommand + pyparsing.SkipTo(stringEnd) | |
| 514 ) | |
|
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515 self.parser.ignore(pyparsing.quotedString).ignore(self.commentGrammars) |
| 230 | 516 |
| 517 inputMark = pyparsing.Literal('<') | |
| 518 inputMark.setParseAction(lambda x: '') | |
| 519 fileName = pyparsing.Word(self.legalChars + '/\\') | |
| 520 inputFrom = fileName('inputFrom') | |
| 521 inputFrom.setParseAction(replace_with_file_contents) | |
| 522 # a not-entirely-satisfactory way of distinguishing < as in "import from" from < | |
| 523 # as in "lesser than" | |
| 524 self.inputParser = inputMark + pyparsing.Optional(inputFrom) + pyparsing.Optional('>') + \ | |
| 525 pyparsing.Optional(fileName) + (pyparsing.stringEnd | '|') | |
| 526 self.inputParser.ignore(pyparsing.quotedString).ignore(self.commentGrammars).ignore(self.commentInProgress) | |
| 527 | |
| 528 def preparse(self, raw, **kwargs): | |
| 529 return raw | |
| 530 | |
| 531 def parsed(self, raw, **kwargs): | |
| 532 if isinstance(raw, ParsedString): | |
| 533 p = raw | |
| 534 else: | |
| 535 raw = self.preparse(raw, **kwargs) | |
| 536 s = self.inputParser.transformString(raw.lstrip()) | |
|
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537 for (shortcut, expansion) in self.shortcuts: |
| 230 | 538 if s.lower().startswith(shortcut): |
| 539 s = s.replace(shortcut, expansion + ' ', 1) | |
| 540 break | |
| 541 result = self.parser.parseString(s) | |
| 542 result['command'] = result.multilineCommand or result.command | |
| 543 result['raw'] = raw | |
| 544 result['clean'] = self.commentGrammars.transformString(result.args) | |
| 545 result['expanded'] = s | |
| 546 p = ParsedString(result.clean) | |
| 547 p.parsed = result | |
| 548 p.parser = self.parsed | |
| 549 for (key, val) in kwargs.items(): | |
| 550 p.parsed[key] = val | |
| 551 return p | |
| 552 | |
| 553 def postparsing_precmd(self, statement): | |
| 554 stop = 0 | |
| 555 return stop, statement | |
|
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556 |
| 230 | 557 def postparsing_postcmd(self, stop): |
| 558 return stop | |
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559 def func_named(self, arg): |
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560 result = None |
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561 target = 'do_' + arg |
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562 if target in dir(self): |
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563 result = target |
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564 else: |
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565 if self.abbrev: # accept shortened versions of commands |
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566 funcs = [fname for fname in self.keywords if fname.startswith(arg)] |
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567 if len(funcs) == 1: |
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568 result = 'do_' + funcs[0] |
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569 return result |
| 230 | 570 def onecmd(self, line): |
| 571 """Interpret the argument as though it had been typed in response | |
| 572 to the prompt. | |
| 573 | |
| 574 This may be overridden, but should not normally need to be; | |
| 575 see the precmd() and postcmd() methods for useful execution hooks. | |
| 576 The return value is a flag indicating whether interpretation of | |
| 577 commands by the interpreter should stop. | |
| 578 | |
| 579 This (`cmd2`) version of `onecmd` already override's `cmd`'s `onecmd`. | |
| 580 | |
| 581 """ | |
| 582 if not line: | |
| 583 return self.emptyline() | |
| 584 if not pyparsing.Or(self.commentGrammars).setParseAction(lambda x: '').transformString(line): | |
| 585 return 0 # command was empty except for comments | |
| 586 try: | |
| 587 statement = self.parsed(line) | |
| 588 while statement.parsed.multilineCommand and (statement.parsed.terminator == ''): | |
| 589 statement = '%s\n%s' % (statement.parsed.raw, | |
| 590 self.pseudo_raw_input(self.continuation_prompt)) | |
| 591 statement = self.parsed(statement) | |
| 592 except Exception, e: | |
| 593 print e | |
| 594 return 0 | |
| 246 | 595 if statement.parsed.command not in self.excludeFromHistory: |
| 596 self.history.append(statement.parsed.raw) | |
| 230 | 597 try: |
| 598 (stop, statement) = self.postparsing_precmd(statement) | |
| 599 except Exception, e: | |
| 600 print str(e) | |
| 601 return 0 | |
| 602 if stop: | |
| 603 return self.postparsing_postcmd(stop) | |
| 604 | |
| 605 if not statement.parsed.command: | |
| 606 return self.postparsing_postcmd(stop=0) | |
| 607 | |
| 608 statekeeper = None | |
| 609 | |
| 610 if statement.parsed.pipeTo: | |
| 611 redirect = subprocess.Popen(statement.parsed.pipeTo, shell=True, stdout=subprocess.PIPE, stdin=subprocess.PIPE) | |
| 612 statekeeper = Statekeeper(self, ('stdout',)) | |
| 613 self.stdout = redirect.stdin | |
| 614 elif statement.parsed.output: | |
| 615 statekeeper = Statekeeper(self, ('stdout',)) | |
| 616 if statement.parsed.outputTo: | |
| 617 mode = 'w' | |
| 618 if statement.parsed.output == '>>': | |
| 619 mode = 'a' | |
| 620 try: | |
| 621 self.stdout = open(os.path.expanduser(statement.parsed.outputTo), mode) | |
| 622 except OSError, e: | |
| 623 print e | |
| 624 return self.postparsing_postcmd(stop=0) | |
| 625 else: | |
| 626 statekeeper = Statekeeper(self, ('stdout',)) | |
| 627 self.stdout = tempfile.TemporaryFile() | |
| 628 if statement.parsed.output == '>>': | |
| 629 self.stdout.write(getPasteBuffer()) | |
| 630 try: | |
| 631 # "heart" of the command, replace's cmd's onecmd() | |
| 632 self.lastcmd = statement.parsed.expanded | |
|
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633 funcname = self.func_named(statement.parsed.command) |
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634 if not funcname: |
| 251 | 635 return self.postparsing_postcmd(self.default(statement)) |
| 636 try: | |
| 637 func = getattr(self, funcname) | |
| 638 except AttributeError: | |
| 639 return self.postparsing_postcmd(self.default(statement)) | |
| 230 | 640 timestart = datetime.datetime.now() |
| 251 | 641 stop = func(statement) |
| 230 | 642 if self.timing: |
| 643 print 'Elapsed: %s' % str(datetime.datetime.now() - timestart) | |
| 644 except Exception, e: | |
| 645 print e | |
| 646 finally: | |
| 647 if statekeeper: | |
| 648 if statement.parsed.output and not statement.parsed.outputTo: | |
| 649 self.stdout.seek(0) | |
| 650 try: | |
| 651 writeToPasteBuffer(self.stdout.read()) | |
| 652 except Exception, e: | |
| 653 print str(e) | |
| 654 elif statement.parsed.pipeTo: | |
| 655 for result in redirect.communicate(): | |
| 656 statekeeper.stdout.write(result or '') | |
| 657 self.stdout.close() | |
| 658 statekeeper.restore() | |
| 659 | |
| 660 return self.postparsing_postcmd(stop) | |
| 661 | |
| 662 def pseudo_raw_input(self, prompt): | |
| 663 """copied from cmd's cmdloop; like raw_input, but accounts for changed stdin, stdout""" | |
| 664 | |
| 665 if self.use_rawinput: | |
| 666 try: | |
| 667 line = raw_input(prompt) | |
| 668 except EOFError: | |
| 669 line = 'EOF' | |
| 670 else: | |
| 671 self.stdout.write(prompt) | |
| 672 self.stdout.flush() | |
| 673 line = self.stdin.readline() | |
| 674 if not len(line): | |
| 675 line = 'EOF' | |
| 676 else: | |
| 677 if line[-1] == '\n': # this was always true in Cmd | |
| 678 line = line[:-1] | |
| 679 return line | |
| 680 | |
| 681 def cmdloop(self, intro=None): | |
| 682 """Repeatedly issue a prompt, accept input, parse an initial prefix | |
| 683 off the received input, and dispatch to action methods, passing them | |
| 684 the remainder of the line as argument. | |
| 685 """ | |
| 686 | |
| 687 # An almost perfect copy from Cmd; however, the pseudo_raw_input portion | |
| 688 # has been split out so that it can be called separately | |
| 689 | |
| 690 self.preloop() | |
| 691 if self.use_rawinput and self.completekey: | |
| 692 try: | |
| 693 import readline | |
| 694 self.old_completer = readline.get_completer() | |
| 695 readline.set_completer(self.complete) | |
| 696 readline.parse_and_bind(self.completekey+": complete") | |
| 697 except ImportError: | |
| 698 pass | |
| 699 try: | |
| 700 if intro is not None: | |
| 701 self.intro = intro | |
| 702 if self.intro: | |
| 703 self.stdout.write(str(self.intro)+"\n") | |
| 704 stop = None | |
| 705 while not stop: | |
| 706 if self.cmdqueue: | |
| 707 line = self.cmdqueue.pop(0) | |
| 708 else: | |
| 709 line = self.pseudo_raw_input(self.prompt) | |
| 710 if (self.echo) and (isinstance(self.stdin, file)): | |
| 711 self.stdout.write(line + '\n') | |
| 712 line = self.precmd(line) | |
| 713 stop = self.onecmd(line) | |
| 714 stop = self.postcmd(stop, line) | |
| 715 self.postloop() | |
| 716 finally: | |
| 717 if self.use_rawinput and self.completekey: | |
| 718 try: | |
| 719 import readline | |
| 720 readline.set_completer(self.old_completer) | |
| 721 except ImportError: | |
| 722 pass | |
| 723 return stop | |
| 724 | |
| 725 def do_EOF(self, arg): | |
| 726 return True | |
| 727 do_eof = do_EOF | |
| 728 | |
| 729 def showParam(self, param): | |
| 730 any_shown = False | |
| 731 param = param.strip().lower() | |
| 732 for p in self.settable: | |
| 733 if p.startswith(param): | |
| 734 val = getattr(self, p) | |
| 735 self.stdout.write('%s: %s\n' % (p, str(getattr(self, p)))) | |
| 736 any_shown = True | |
| 737 if not any_shown: | |
| 738 print "Parameter '%s' not supported (type 'show' for list of parameters)." % param | |
| 739 | |
| 740 def do_quit(self, arg): | |
| 741 return self._STOP_AND_EXIT | |
| 742 do_exit = do_quit | |
| 743 do_q = do_quit | |
| 744 | |
| 745 def do_show(self, arg): | |
| 746 '''Shows value of a parameter.''' | |
| 747 if arg.strip(): | |
| 748 self.showParam(arg) | |
| 749 else: | |
| 750 for param in self.settable: | |
| 751 self.showParam(param) | |
| 752 | |
| 753 def do_set(self, arg): | |
| 754 '''Sets a cmd2 parameter. Accepts abbreviated parameter names so long as there is no ambiguity. | |
| 755 Call without arguments for a list of settable parameters with their values.''' | |
| 756 try: | |
| 757 paramName, val = arg.split(None, 1) | |
| 758 paramName = paramName.strip().lower() | |
| 759 hits = [paramName in p for p in self.settable] | |
| 760 if hits.count(True) == 1: | |
| 761 paramName = self.settable[hits.index(True)] | |
| 762 currentVal = getattr(self, paramName) | |
| 763 if (val[0] == val[-1]) and val[0] in ("'", '"'): | |
| 764 val = val[1:-1] | |
| 765 else: | |
| 766 val = cast(currentVal, val) | |
| 767 setattr(self, paramName, val) | |
| 768 self.stdout.write('%s - was: %s\nnow: %s\n' % (paramName, currentVal, val)) | |
| 769 if currentVal != val: | |
| 770 try: | |
| 771 onchange_hook = getattr(self, '_onchange_%s' % paramName) | |
| 772 onchange_hook(old=currentVal, new=val) | |
| 773 except AttributeError: | |
| 774 pass | |
| 775 else: | |
| 776 self.do_show(paramName) | |
| 777 except (ValueError, AttributeError, NotSettableError), e: | |
| 778 self.do_show(arg) | |
| 779 | |
| 780 def do_pause(self, arg): | |
| 781 'Displays the specified text then waits for the user to press RETURN.' | |
| 782 raw_input(arg + '\n') | |
| 783 | |
| 784 def do_shell(self, arg): | |
| 785 'execute a command as if at the OS prompt.' | |
| 786 os.system(arg) | |
| 787 | |
| 231 | 788 def _attempt_py_command(self, arg): |
| 789 try: | |
| 790 result = eval(arg, self.pystate) | |
| 791 print repr(result) | |
| 792 except SyntaxError: | |
| 793 exec(arg, self.pystate) | |
| 794 return | |
| 795 | |
| 233 | 796 def do_py(self, arg): |
| 230 | 797 ''' |
| 798 py <command>: Executes a Python command. | |
| 242 | 799 py: Enters interactive Python mode. |
| 800 End with `Ctrl-D` (Unix) / `Ctrl-Z` (Windows), `quit()`, 'exit()`. | |
| 241 | 801 Non-python commands can be issued with `cmd("your command")`. |
| 230 | 802 ''' |
| 803 if arg.strip(): | |
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804 interp = InteractiveInterpreter(locals=self.pystate) |
| 233 | 805 interp.runcode(arg) |
| 230 | 806 else: |
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807 interp = MyInteractiveConsole(locals=self.pystate) |
| 233 | 808 def quit(): |
| 234 | 809 raise EmbeddedConsoleExit |
| 236 | 810 def onecmd(arg): |
| 811 return self.onecmd(arg + '\n') | |
| 233 | 812 self.pystate['quit'] = quit |
| 813 self.pystate['exit'] = quit | |
| 236 | 814 self.pystate[self.nonpythoncommand] = onecmd |
| 234 | 815 try: |
| 240 | 816 cprt = 'Type "help", "copyright", "credits" or "license" for more information.' |
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817 keepstate = Statekeeper(sys, ('stdin','stdout')) |
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818 sys.stdout = self.stdout |
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819 sys.stdin = self.stdin |
| 240 | 820 interp.interact(banner= "Python %s on %s\n%s\n(%s)\n%s" % |
| 821 (sys.version, sys.platform, cprt, self.__class__.__name__, self.do_py.__doc__)) | |
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822 except EmbeddedConsoleExit: |
| 245 | 823 pass |
| 824 keepstate.restore() | |
| 233 | 825 |
| 230 | 826 def do_history(self, arg): |
| 827 """history [arg]: lists past commands issued | |
| 828 | |
| 829 no arg -> list all | |
| 830 arg is integer -> list one history item, by index | |
| 831 arg is string -> string search | |
| 832 arg is /enclosed in forward-slashes/ -> regular expression search | |
| 833 """ | |
| 834 if arg: | |
| 835 history = self.history.get(arg) | |
| 836 else: | |
| 837 history = self.history | |
| 838 for hi in history: | |
| 839 self.stdout.write(hi.pr()) | |
| 840 def last_matching(self, arg): | |
| 841 try: | |
| 842 if arg: | |
| 843 return self.history.get(arg)[-1] | |
| 844 else: | |
| 845 return self.history[-1] | |
| 846 except IndexError: | |
| 847 return None | |
| 848 def do_list(self, arg): | |
| 849 """list [arg]: lists last command issued | |
| 850 | |
| 851 no arg -> list absolute last | |
| 852 arg is integer -> list one history item, by index | |
| 853 - arg, arg - (integer) -> list up to or after #arg | |
| 854 arg is string -> list last command matching string search | |
| 855 arg is /enclosed in forward-slashes/ -> regular expression search | |
| 856 """ | |
| 857 try: | |
| 858 self.stdout.write(self.last_matching(arg).pr()) | |
| 859 except: | |
| 860 pass | |
| 861 do_hi = do_history | |
| 862 do_l = do_list | |
| 863 do_li = do_list | |
| 864 | |
| 865 def do_ed(self, arg): | |
| 866 """ed: edit most recent command in text editor | |
| 867 ed [N]: edit numbered command from history | |
| 868 ed [filename]: edit specified file name | |
| 869 | |
| 870 commands are run after editor is closed. | |
| 871 "set edit (program-name)" or set EDITOR environment variable | |
| 872 to control which editing program is used.""" | |
| 873 if not self.editor: | |
| 874 print "please use 'set editor' to specify your text editing program of choice." | |
| 875 return | |
| 876 filename = self.default_file_name | |
| 877 if arg: | |
| 878 try: | |
| 879 buffer = self.last_matching(int(arg)) | |
| 880 except ValueError: | |
| 881 filename = arg | |
| 882 buffer = '' | |
| 883 else: | |
| 884 buffer = self.history[-1] | |
| 885 | |
| 886 if buffer: | |
| 887 f = open(os.path.expanduser(filename), 'w') | |
| 888 f.write(buffer or '') | |
| 889 f.close() | |
| 890 | |
| 891 os.system('%s %s' % (self.editor, filename)) | |
| 892 self.do__load(filename) | |
| 893 do_edit = do_ed | |
| 894 | |
| 895 saveparser = (pyparsing.Optional(pyparsing.Word(pyparsing.nums)^'*')("idx") + | |
| 896 pyparsing.Optional(pyparsing.Word(legalChars + '/\\'))("fname") + | |
| 897 pyparsing.stringEnd) | |
| 898 def do_save(self, arg): | |
| 899 """`save [N] [filename.ext]` | |
| 900 Saves command from history to file. | |
| 901 N => Number of command (from history), or `*`; | |
| 902 most recent command if omitted""" | |
| 903 | |
| 904 try: | |
| 905 args = self.saveparser.parseString(arg) | |
| 906 except pyparsing.ParseException: | |
| 907 print self.do_save.__doc__ | |
| 908 return | |
| 909 fname = args.fname or self.default_file_name | |
| 910 if args.idx == '*': | |
| 911 saveme = '\n\n'.join(self.history[:]) | |
| 912 elif args.idx: | |
| 913 saveme = self.history[int(args.idx)-1] | |
| 914 else: | |
| 915 saveme = self.history[-1] | |
| 916 try: | |
| 917 f = open(os.path.expanduser(fname), 'w') | |
| 918 f.write(saveme) | |
| 919 f.close() | |
| 920 print 'Saved to %s' % (fname) | |
| 921 except Exception, e: | |
| 922 print 'Error saving %s: %s' % (fname, str(e)) | |
| 923 | |
|
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924 def read_file_or_url(self, fname): |
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925 if isinstance(fname, file): |
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926 target = open(fname, 'r') |
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927 else: |
|
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928 match = self.urlre.match(fname) |
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929 if match: |
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930 target = urllib.urlopen(match.group(1)) |
| 230 | 931 else: |
|
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932 fname = os.path.expanduser(fname) |
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933 try: |
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934 result = open(os.path.expanduser(fname), 'r') |
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935 except IOError, e: |
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936 result = open('%s.%s' % (os.path.expanduser(fname), |
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937 self.defaultExtension), 'r') |
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938 return result |
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939 |
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940 def do__relative_load(self, arg=None): |
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941 ''' |
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942 Runs commands in script at file or URL; if this is called from within an |
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943 already-running script, the filename will be interpreted relative to the |
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944 already-running script's directory.''' |
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945 if arg: |
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946 arg = arg.split(None, 1) |
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947 targetname, args = arg[0], (arg[1:] or [''])[0] |
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948 targetname = os.path.join(self.current_script_dir or '', targetname) |
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949 self.do__load('%s %s' % (targetname, args)) |
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950 |
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951 urlre = re.compile('(https?://[-\\w\\./]+)') |
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952 def do_load(self, arg=None): |
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953 """Runs script of command(s) from a file or URL.""" |
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954 if arg is None: |
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955 targetname = self.default_file_name |
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956 else: |
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957 arg = arg.split(None, 1) |
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958 targetname, args = arg[0], (arg[1:] or [''])[0].strip() |
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959 try: |
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960 target = self.read_file_or_url(targetname) |
| 230 | 961 except IOError, e: |
|
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962 print 'Problem accessing script from %s: \n%s' % (targetname, e) |
| 230 | 963 return |
|
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964 keepstate = Statekeeper(self, ('stdin','use_rawinput','prompt', |
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965 'continuation_prompt','current_script_dir')) |
| 230 | 966 self.stdin = target |
| 967 self.use_rawinput = False | |
| 968 self.prompt = self.continuation_prompt = '' | |
|
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969 self.current_script_dir = os.path.split(targetname)[0] |
| 230 | 970 stop = self.cmdloop() |
| 971 self.stdin.close() | |
| 972 keepstate.restore() | |
| 973 self.lastcmd = '' | |
| 974 return (stop == self._STOP_AND_EXIT) and self._STOP_AND_EXIT | |
| 975 do__load = do_load # avoid an unfortunate legacy use of do_load from sqlpython | |
| 976 | |
| 977 def do_run(self, arg): | |
| 978 """run [arg]: re-runs an earlier command | |
| 979 | |
| 980 no arg -> run most recent command | |
| 981 arg is integer -> run one history item, by index | |
| 982 arg is string -> run most recent command by string search | |
| 983 arg is /enclosed in forward-slashes/ -> run most recent by regex | |
| 984 """ | |
| 985 'run [N]: runs the SQL that was run N commands ago' | |
| 986 runme = self.last_matching(arg) | |
| 987 print runme | |
| 988 if runme: | |
| 989 runme = self.precmd(runme) | |
| 990 stop = self.onecmd(runme) | |
| 991 stop = self.postcmd(stop, runme) | |
| 992 do_r = do_run | |
| 993 | |
| 994 def fileimport(self, statement, source): | |
| 995 try: | |
| 996 f = open(os.path.expanduser(source)) | |
| 997 except IOError: | |
| 998 self.stdout.write("Couldn't read from file %s\n" % source) | |
| 999 return '' | |
| 1000 data = f.read() | |
| 1001 f.close() | |
| 1002 return data | |
| 1003 | |
| 1004 class HistoryItem(str): | |
| 1005 def __init__(self, instr): | |
| 1006 str.__init__(self) | |
| 1007 self.lowercase = self.lower() | |
| 1008 self.idx = None | |
| 1009 def pr(self): | |
| 1010 return '-------------------------[%d]\n%s\n' % (self.idx, str(self)) | |
| 1011 | |
| 1012 class History(list): | |
| 1013 rangeFrom = re.compile(r'^([\d])+\s*\-$') | |
| 1014 def append(self, new): | |
| 1015 new = HistoryItem(new) | |
| 1016 list.append(self, new) | |
| 1017 new.idx = len(self) | |
| 1018 def extend(self, new): | |
| 1019 for n in new: | |
| 1020 self.append(n) | |
| 1021 def get(self, getme): | |
| 1022 try: | |
| 1023 getme = int(getme) | |
| 1024 if getme < 0: | |
| 1025 return self[:(-1 * getme)] | |
| 1026 else: | |
| 1027 return [self[getme-1]] | |
| 1028 except IndexError: | |
| 1029 return [] | |
| 1030 except (ValueError, TypeError): | |
| 1031 getme = getme.strip() | |
| 1032 mtch = self.rangeFrom.search(getme) | |
| 1033 if mtch: | |
| 1034 return self[(int(mtch.group(1))-1):] | |
| 1035 if getme.startswith(r'/') and getme.endswith(r'/'): | |
| 1036 finder = re.compile(getme[1:-1], re.DOTALL | re.MULTILINE | re.IGNORECASE) | |
| 1037 def isin(hi): | |
| 1038 return finder.search(hi) | |
| 1039 else: | |
| 1040 def isin(hi): | |
| 1041 return (getme.lower() in hi.lowercase) | |
| 1042 return [itm for itm in self if isin(itm)] | |
| 1043 | |
| 1044 class NotSettableError(Exception): | |
| 1045 pass | |
| 1046 | |
| 1047 def cast(current, new): | |
| 1048 """Tries to force a new value into the same type as the current.""" | |
| 1049 typ = type(current) | |
| 1050 if typ == bool: | |
| 1051 try: | |
| 1052 return bool(int(new)) | |
| 1053 except ValueError, TypeError: | |
| 1054 pass | |
| 1055 try: | |
| 1056 new = new.lower() | |
| 1057 except: | |
| 1058 pass | |
| 1059 if (new=='on') or (new[0] in ('y','t')): | |
| 1060 return True | |
| 1061 if (new=='off') or (new[0] in ('n','f')): | |
| 1062 return False | |
| 1063 else: | |
| 1064 try: | |
| 1065 return typ(new) | |
| 1066 except: | |
| 1067 pass | |
| 1068 print "Problem setting parameter (now %s) to %s; incorrect type?" % (current, new) | |
| 1069 return current | |
| 1070 | |
| 1071 class Statekeeper(object): | |
| 1072 def __init__(self, obj, attribs): | |
| 1073 self.obj = obj | |
| 1074 self.attribs = attribs | |
| 1075 self.save() | |
| 1076 def save(self): | |
| 1077 for attrib in self.attribs: | |
| 1078 setattr(self, attrib, getattr(self.obj, attrib)) | |
| 1079 def restore(self): | |
| 1080 for attrib in self.attribs: | |
| 1081 setattr(self.obj, attrib, getattr(self, attrib)) | |
| 1082 | |
| 1083 class Borg(object): | |
| 1084 '''All instances of any Borg subclass will share state. | |
| 1085 from Python Cookbook, 2nd Ed., recipe 6.16''' | |
| 1086 _shared_state = {} | |
| 1087 def __new__(cls, *a, **k): | |
| 1088 obj = object.__new__(cls, *a, **k) | |
| 1089 obj.__dict__ = cls._shared_state | |
| 1090 return obj | |
| 1091 | |
| 1092 class OutputTrap(Borg): | |
| 1093 '''Instantiate an OutputTrap to divert/capture ALL stdout output. For use in unit testing. | |
| 1094 Call `tearDown()` to return to normal output.''' | |
| 1095 def __init__(self): | |
| 1096 self.old_stdout = sys.stdout | |
| 1097 self.trap = tempfile.TemporaryFile() | |
| 1098 sys.stdout = self.trap | |
| 1099 def read(self): | |
| 1100 self.trap.seek(0) | |
| 1101 result = self.trap.read() | |
| 1102 self.trap.truncate(0) | |
| 1103 return result.strip('\x00') | |
| 1104 def tearDown(self): | |
| 1105 sys.stdout = self.old_stdout | |
| 1106 | |
| 1107 class Cmd2TestCase(unittest.TestCase): | |
| 1108 '''Subclass this, setting CmdApp and transcriptFileName, to make a unittest.TestCase class | |
| 1109 that will execute the commands in transcriptFileName and expect the results shown. | |
| 1110 See example.py''' | |
| 1111 CmdApp = None | |
| 1112 transcriptFileName = '' | |
|
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1113 transcriptExtension = '' |
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1114 def fetchTranscripts(self): |
|
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1115 self.transcripts = [] |
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1116 if self.CmdApp.testfile: |
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1117 transcriptfilenames = [self.CmdApp.testfile] |
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1118 elif self.transcriptExtension: |
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1119 transcriptfilenames = glob.glob('*.' + self.transcriptExtension) |
|
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1120 elif self.transcriptFileName: |
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1121 transcriptfilenames = [self.transcriptFileName] |
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1122 for fname in transcriptfilenames: |
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1123 tfile = open(fname) |
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1124 self.transcripts.append(iter(tfile.readlines())) |
|
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1125 tfile.close() |
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1126 |
| 230 | 1127 def setUp(self): |
| 1128 if self.CmdApp: | |
| 1129 self.outputTrap = OutputTrap() | |
| 1130 self.cmdapp = self.CmdApp() | |
|
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1131 self.fetchTranscripts() |
| 230 | 1132 def assertEqualEnough(self, got, expected, message): |
| 1133 got = got.strip().splitlines() | |
| 1134 expected = expected.strip().splitlines() | |
| 1135 self.assertEqual(len(got), len(expected), message) | |
| 1136 for (linegot, lineexpected) in zip(got, expected): | |
| 1137 matchme = re.escape(lineexpected.strip()).replace('\\*', '.*'). \ | |
| 1138 replace('\\ ', ' ') | |
| 1139 self.assert_(re.match(matchme, linegot.strip()), message) | |
| 1140 def testall(self): | |
| 1141 if self.CmdApp: | |
|
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1142 self.fetchTranscripts() |
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1143 for transcript in self.transcripts: |
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1144 self._test_transcript(transcript) |
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1145 def _test_transcript(self, transcript): |
|
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1146 lineNum = 0 |
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1147 try: |
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1148 line = transcript.next() |
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1149 while True: |
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1150 while not line.startswith(self.cmdapp.prompt): |
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1151 line = transcript.next() |
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1152 command = [line[len(self.cmdapp.prompt):]] |
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1153 line = transcript.next() |
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1154 while line.startswith(self.cmdapp.continuation_prompt): |
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1155 command.append(line[len(self.cmdapp.continuation_prompt):]) |
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1156 line = transcript.next() |
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1157 command = ''.join(command) |
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1158 self.cmdapp.onecmd(command) |
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1159 result = self.outputTrap.read() |
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1160 if line.startswith(self.cmdapp.prompt): |
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1161 self.assertEqualEnough(result.strip(), '', |
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1162 '\nFile %s, line %d\nCommand was:\n%s\nExpected: (nothing) \nGot:\n%s\n' % |
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1163 (self.transcriptFileName, lineNum, command, result)) |
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1164 continue |
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1165 expected = [] |
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1166 while not line.startswith(self.cmdapp.prompt): |
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1167 expected.append(line) |
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1168 line = transcript.next() |
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1169 expected = ''.join(expected) |
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1170 self.assertEqualEnough(expected.strip(), result.strip(), |
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1171 '\nFile %s, line %d\nCommand was:\n%s\nExpected:\n%s\nGot:\n%s\n' % |
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1172 (self.transcriptFileName, lineNum, command, expected, result)) |
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1173 # this needs to account for a line-by-line strip()ping |
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1174 except StopIteration: |
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1175 pass |
| 230 | 1176 def tearDown(self): |
| 1177 if self.CmdApp: | |
| 1178 self.outputTrap.tearDown() | |
| 1179 | |
| 1180 if __name__ == '__main__': | |
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1181 doctest.testmod(optionflags = doctest.NORMALIZE_WHITESPACE) |