Mercurial > python-cmd2
annotate cmd2.py @ 340:43569db3ebdb
detect lists with __reversed__ not __getslice__
| author | catherine@Drou |
|---|---|
| date | Tue, 16 Feb 2010 12:36:14 -0500 |
| parents | 6c397f0865c7 |
| children | 9e593c480782 |
| 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) | |
| 310 | 16 Bash-style ``select`` available |
| 230 | 17 |
| 18 Note that redirection with > and | will only work if `self.stdout.write()` | |
| 19 is used in place of `print`. The standard library's `cmd` module is | |
| 20 written to use `self.stdout.write()`, | |
| 21 | |
| 22 - Catherine Devlin, Jan 03 2008 - catherinedevlin.blogspot.com | |
| 23 | |
| 24 mercurial repository at http://www.assembla.com/wiki/show/python-cmd2 | |
| 25 """ | |
|
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26 import cmd |
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27 import re |
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28 import os |
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29 import sys |
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30 import optparse |
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31 import subprocess |
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32 import tempfile |
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33 import doctest |
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34 import unittest |
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35 import datetime |
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36 import urllib |
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37 import glob |
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38 import traceback |
| 312 | 39 import platform |
| 323 | 40 import copy |
| 339 | 41 from code import InteractiveConsole, InteractiveInterpreter |
| 230 | 42 from optparse import make_option |
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43 |
| 309 | 44 if sys.version_info[0] > 2: |
| 45 import pyparsing_py3 as pyparsing | |
| 46 else: | |
| 47 import pyparsing | |
| 48 | |
| 312 | 49 __version__ = '0.6.0' |
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50 |
| 230 | 51 class OptionParser(optparse.OptionParser): |
| 52 def exit(self, status=0, msg=None): | |
| 53 self.values._exit = True | |
| 54 if msg: | |
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55 print (msg) |
| 230 | 56 |
| 57 def print_help(self, *args, **kwargs): | |
| 58 try: | |
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59 print (self._func.__doc__) |
| 230 | 60 except AttributeError: |
| 61 pass | |
| 62 optparse.OptionParser.print_help(self, *args, **kwargs) | |
| 63 | |
| 64 def error(self, msg): | |
| 65 """error(msg : string) | |
| 66 | |
| 67 Print a usage message incorporating 'msg' to stderr and exit. | |
| 68 If you override this in a subclass, it should not return -- it | |
| 69 should either exit or raise an exception. | |
| 70 """ | |
| 71 raise | |
| 72 | |
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73 def remaining_args(oldArgs, newArgList): |
| 230 | 74 ''' |
| 285 | 75 Preserves the spacing originally in the argument after |
| 76 the removal of options. | |
| 77 | |
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78 >>> remaining_args('-f bar bar cow', ['bar', 'cow']) |
| 230 | 79 'bar cow' |
| 80 ''' | |
| 81 pattern = '\s+'.join(re.escape(a) for a in newArgList) + '\s*$' | |
| 82 matchObj = re.search(pattern, oldArgs) | |
| 83 return oldArgs[matchObj.start():] | |
| 280 | 84 |
| 85 def _attr_get_(obj, attr): | |
| 86 '''Returns an attribute's value, or None (no error) if undefined. | |
| 286 | 87 Analagous to .get() for dictionaries. Useful when checking for |
| 88 value of options that may not have been defined on a given | |
| 89 method.''' | |
| 280 | 90 try: |
| 91 return getattr(obj, attr) | |
| 92 except AttributeError: | |
| 93 return None | |
| 283 | 94 |
| 95 optparse.Values.get = _attr_get_ | |
| 96 | |
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97 options_defined = [] # used to distinguish --options from SQL-style --comments |
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98 |
| 230 | 99 def options(option_list): |
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100 '''Used as a decorator and passed a list of optparse-style options, |
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101 alters a cmd2 methodo populate its ``opts`` argument from its |
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102 raw text argument. |
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103 |
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104 Example: transform |
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105 def do_something(self, arg): |
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106 |
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107 into |
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108 @options([make_option('-q', '--quick', action="store_true", |
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109 help="Makes things fast")]) |
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110 def do_something(self, arg, opts): |
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111 if opts.quick: |
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112 self.fast_button = True |
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113 ''' |
| 296 | 114 if not isinstance(option_list, list): |
| 298 | 115 option_list = [option_list] |
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116 for opt in option_list: |
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117 options_defined.append(pyparsing.Literal(opt.get_opt_string())) |
| 230 | 118 def option_setup(func): |
| 119 optionParser = OptionParser() | |
| 120 for opt in option_list: | |
| 121 optionParser.add_option(opt) | |
| 122 optionParser.set_usage("%s [options] arg" % func.__name__.strip('do_')) | |
| 123 optionParser._func = func | |
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124 def new_func(instance, arg): |
| 230 | 125 try: |
| 302 | 126 opts, newArgList = optionParser.parse_args(arg.split()) |
| 285 | 127 # Must find the remaining args in the original argument list, but |
| 128 # mustn't include the command itself | |
| 302 | 129 #if hasattr(arg, 'parsed') and newArgList[0] == arg.parsed.command: |
| 130 # newArgList = newArgList[1:] | |
| 131 newArgs = remaining_args(arg, newArgList) | |
| 301 | 132 if isinstance(arg, ParsedString): |
| 133 arg = arg.with_args_replaced(newArgs) | |
| 134 else: | |
| 135 arg = newArgs | |
| 230 | 136 except (optparse.OptionValueError, optparse.BadOptionError, |
| 137 optparse.OptionError, optparse.AmbiguousOptionError, | |
| 138 optparse.OptionConflictError), e: | |
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139 print (e) |
| 230 | 140 optionParser.print_help() |
| 141 return | |
| 142 if hasattr(opts, '_exit'): | |
| 143 return None | |
| 144 result = func(instance, arg, opts) | |
| 145 return result | |
| 289 | 146 new_func.__doc__ = '%s\n%s' % (func.__doc__, optionParser.format_help()) |
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147 return new_func |
| 230 | 148 return option_setup |
| 149 | |
| 150 class PasteBufferError(EnvironmentError): | |
| 151 if sys.platform[:3] == 'win': | |
| 152 errmsg = """Redirecting to or from paste buffer requires pywin32 | |
| 153 to be installed on operating system. | |
| 154 Download from http://sourceforge.net/projects/pywin32/""" | |
| 155 else: | |
| 156 errmsg = """Redirecting to or from paste buffer requires xclip | |
| 157 to be installed on operating system. | |
| 158 On Debian/Ubuntu, 'sudo apt-get install xclip' will install it.""" | |
| 159 def __init__(self): | |
| 160 Exception.__init__(self, self.errmsg) | |
| 161 | |
| 162 pastebufferr = """Redirecting to or from paste buffer requires %s | |
| 163 to be installed on operating system. | |
| 164 %s""" | |
| 286 | 165 |
| 230 | 166 if subprocess.mswindows: |
| 167 try: | |
| 168 import win32clipboard | |
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169 def get_paste_buffer(): |
| 230 | 170 win32clipboard.OpenClipboard(0) |
| 171 try: | |
| 172 result = win32clipboard.GetClipboardData() | |
| 173 except TypeError: | |
| 174 result = '' #non-text | |
| 175 win32clipboard.CloseClipboard() | |
| 176 return result | |
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177 def write_to_paste_buffer(txt): |
| 230 | 178 win32clipboard.OpenClipboard(0) |
| 179 win32clipboard.EmptyClipboard() | |
| 180 win32clipboard.SetClipboardText(txt) | |
| 181 win32clipboard.CloseClipboard() | |
| 182 except ImportError: | |
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183 def get_paste_buffer(*args): |
| 230 | 184 raise OSError, pastebufferr % ('pywin32', 'Download from http://sourceforge.net/projects/pywin32/') |
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185 setPasteBuffer = get_paste_buffer |
| 230 | 186 else: |
| 187 can_clip = False | |
| 188 try: | |
| 189 subprocess.check_call('xclip -o -sel clip', shell=True, stdout=subprocess.PIPE, stdin=subprocess.PIPE) | |
| 190 can_clip = True | |
| 191 except AttributeError: # check_call not defined, Python < 2.5 | |
| 192 teststring = 'Testing for presence of xclip.' | |
| 193 xclipproc = subprocess.Popen('xclip -sel clip', shell=True, stdout=subprocess.PIPE, stdin=subprocess.PIPE) | |
| 194 xclipproc.stdin.write(teststring) | |
| 195 xclipproc.stdin.close() | |
| 196 xclipproc = subprocess.Popen('xclip -o -sel clip', shell=True, stdout=subprocess.PIPE, stdin=subprocess.PIPE) | |
| 197 if xclipproc.stdout.read() == teststring: | |
| 198 can_clip = True | |
| 199 except (subprocess.CalledProcessError, OSError, IOError): | |
| 200 pass | |
| 201 if can_clip: | |
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202 def get_paste_buffer(): |
| 230 | 203 xclipproc = subprocess.Popen('xclip -o -sel clip', shell=True, stdout=subprocess.PIPE, stdin=subprocess.PIPE) |
| 204 return xclipproc.stdout.read() | |
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205 def write_to_paste_buffer(txt): |
| 230 | 206 xclipproc = subprocess.Popen('xclip -sel clip', shell=True, stdout=subprocess.PIPE, stdin=subprocess.PIPE) |
| 207 xclipproc.stdin.write(txt) | |
| 208 xclipproc.stdin.close() | |
| 209 # but we want it in both the "primary" and "mouse" clipboards | |
| 210 xclipproc = subprocess.Popen('xclip', shell=True, stdout=subprocess.PIPE, stdin=subprocess.PIPE) | |
| 211 xclipproc.stdin.write(txt) | |
| 212 xclipproc.stdin.close() | |
| 213 else: | |
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214 def get_paste_buffer(*args): |
| 230 | 215 raise OSError, pastebufferr % ('xclip', 'On Debian/Ubuntu, install with "sudo apt-get install xclip"') |
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216 setPasteBuffer = get_paste_buffer |
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217 writeToPasteBuffer = get_paste_buffer |
| 230 | 218 |
| 219 pyparsing.ParserElement.setDefaultWhitespaceChars(' \t') | |
| 220 | |
| 221 class ParsedString(str): | |
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222 def full_parsed_statement(self): |
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223 new = ParsedString('%s %s' % (self.parsed.command, self.parsed.args)) |
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224 new.parsed = self.parsed |
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225 new.parser = self.parser |
| 301 | 226 return new |
| 227 def with_args_replaced(self, newargs): | |
| 228 new = ParsedString(newargs) | |
| 229 new.parsed = self.parsed | |
| 230 new.parser = self.parser | |
| 231 new.parsed['args'] = newargs | |
| 232 new.parsed.statement['args'] = newargs | |
| 233 return new | |
| 230 | 234 |
| 235 class SkipToLast(pyparsing.SkipTo): | |
| 236 def parseImpl( self, instring, loc, doActions=True ): | |
| 237 resultStore = [] | |
| 238 startLoc = loc | |
| 239 instrlen = len(instring) | |
| 240 expr = self.expr | |
| 241 failParse = False | |
| 242 while loc <= instrlen: | |
| 243 try: | |
| 244 if self.failOn: | |
| 245 failParse = True | |
| 246 self.failOn.tryParse(instring, loc) | |
| 247 failParse = False | |
| 248 loc = expr._skipIgnorables( instring, loc ) | |
| 249 expr._parse( instring, loc, doActions=False, callPreParse=False ) | |
| 250 skipText = instring[startLoc:loc] | |
| 251 if self.includeMatch: | |
| 252 loc,mat = expr._parse(instring,loc,doActions,callPreParse=False) | |
| 253 if mat: | |
| 254 skipRes = ParseResults( skipText ) | |
| 255 skipRes += mat | |
| 256 resultStore.append((loc, [ skipRes ])) | |
| 257 else: | |
| 258 resultStore,append((loc, [ skipText ])) | |
| 259 else: | |
| 260 resultStore.append((loc, [ skipText ])) | |
| 261 loc += 1 | |
| 262 except (pyparsing.ParseException,IndexError): | |
| 263 if failParse: | |
| 264 raise | |
| 265 else: | |
| 266 loc += 1 | |
| 267 if resultStore: | |
| 268 return resultStore[-1] | |
| 269 else: | |
| 270 exc = self.myException | |
| 271 exc.loc = loc | |
| 272 exc.pstr = instring | |
| 273 raise exc | |
| 274 | |
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275 class StubbornDict(dict): |
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276 '''Dictionary that tolerates many input formats. |
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277 Create it with stubbornDict(arg) factory function. |
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278 |
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279 >>> d = StubbornDict(large='gross', small='klein') |
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280 >>> sorted(d.items()) |
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281 [('large', 'gross'), ('small', 'klein')] |
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282 >>> d.append(['plain', ' plaid']) |
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283 >>> sorted(d.items()) |
| 333 | 284 [('large', 'gross'), ('plaid', ''), ('plain', ''), ('small', 'klein')] |
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285 >>> d += ' girl Frauelein, Maedchen\\n\\n shoe schuh' |
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286 >>> sorted(d.items()) |
| 333 | 287 [('girl', 'Frauelein, Maedchen'), ('large', 'gross'), ('plaid', ''), ('plain', ''), ('shoe', 'schuh'), ('small', 'klein')] |
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288 ''' |
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289 def update(self, arg): |
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290 dict.update(self, StubbornDict.to_dict(arg)) |
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291 append = update |
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292 def __iadd__(self, arg): |
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293 self.update(arg) |
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294 return self |
| 323 | 295 def __add__(self, arg): |
| 296 selfcopy = copy.copy(self) | |
| 297 selfcopy.update(stubbornDict(arg)) | |
| 298 return selfcopy | |
| 299 def __radd__(self, arg): | |
| 300 selfcopy = copy.copy(self) | |
| 301 selfcopy.update(stubbornDict(arg)) | |
| 302 return selfcopy | |
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303 |
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304 @classmethod |
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305 def to_dict(cls, arg): |
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306 'Generates dictionary from string or list of strings' |
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307 if hasattr(arg, 'splitlines'): |
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308 arg = arg.splitlines() |
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340
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309 if hasattr(arg, '__reversed__'): |
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320
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310 result = {} |
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311 for a in arg: |
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312 a = a.strip() |
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313 if a: |
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314 key_val = a.split(None, 1) |
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315 key = key_val[0] |
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316 if len(key_val) > 1: |
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317 val = key_val[1] |
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318 else: |
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319 val = '' |
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320 result[key] = val |
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321 else: |
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322 result = arg |
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323 return result |
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324 |
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325 def stubbornDict(*arg, **kwarg): |
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326 ''' |
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327 >>> sorted(stubbornDict('cow a bovine\\nhorse an equine').items()) |
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328 [('cow', 'a bovine'), ('horse', 'an equine')] |
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329 >>> sorted(stubbornDict(['badger', 'porcupine a poky creature']).items()) |
| 333 | 330 [('badger', ''), ('porcupine', 'a poky creature')] |
|
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331 >>> sorted(stubbornDict(turtle='has shell', frog='jumpy').items()) |
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332 [('frog', 'jumpy'), ('turtle', 'has shell')] |
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333 ''' |
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334 result = {} |
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335 for a in arg: |
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336 result.update(StubbornDict.to_dict(a)) |
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337 result.update(kwarg) |
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338 return StubbornDict(result) |
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339 |
| 230 | 340 def replace_with_file_contents(fname): |
| 341 if fname: | |
| 342 try: | |
| 343 result = open(os.path.expanduser(fname[0])).read() | |
| 344 except IOError: | |
| 345 result = '< %s' % fname[0] # wasn't a file after all | |
| 346 else: | |
|
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347 result = get_paste_buffer() |
| 233 | 348 return result |
| 349 | |
| 234 | 350 class EmbeddedConsoleExit(Exception): |
| 351 pass | |
| 352 | |
| 290 | 353 def ljust(x, width, fillchar=' '): |
| 354 'analogous to str.ljust, but works for lists' | |
| 355 if hasattr(x, 'ljust'): | |
| 356 return x.ljust(width, fillchar) | |
| 357 else: | |
| 358 if len(x) < width: | |
| 359 x = (x + [fillchar] * width)[:width] | |
| 360 return x | |
| 361 | |
| 230 | 362 class Cmd(cmd.Cmd): |
| 363 echo = False | |
| 286 | 364 case_insensitive = True # Commands recognized regardless of case |
| 230 | 365 continuation_prompt = '> ' |
| 286 | 366 timing = False # Prints elapsed time for each command |
| 367 # make sure your terminators are not in legalChars! | |
| 368 legalChars = '!#$%.:?@_' + pyparsing.alphanums + pyparsing.alphas8bit | |
|
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369 shortcuts = {'?': 'help', '!': 'shell', '@': 'load', '@@': '_relative_load'} |
| 230 | 370 excludeFromHistory = '''run r list l history hi ed edit li eof'''.split() |
| 331 | 371 default_to_shell = False |
| 230 | 372 noSpecialParse = 'set ed edit exit'.split() |
| 286 | 373 defaultExtension = 'txt' # For ``save``, ``load``, etc. |
| 374 default_file_name = 'command.txt' # For ``save``, ``load``, etc. | |
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375 abbrev = True # Abbreviated commands recognized |
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376 current_script_dir = None |
| 245 | 377 reserved_words = [] |
|
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378 feedback_to_output = False # Do include nonessentials in >, | output |
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379 quiet = False # Do not suppress nonessential output |
| 324 | 380 debug = False |
| 339 | 381 locals_in_py = True |
|
320
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382 settable = stubbornDict(''' |
| 290 | 383 prompt |
| 312 | 384 colors Colorized output (*nix only) |
| 331 | 385 continuation_prompt On 2nd+ line of input |
| 386 debug Show full error stack on error | |
| 387 default_file_name for ``save``, ``load``, etc. | |
| 388 editor Program used by ``edit`` | |
| 290 | 389 case_insensitive upper- and lower-case both OK |
| 390 feedback_to_output include nonessentials in `|`, `>` results | |
| 331 | 391 quiet Don't print nonessential feedback |
| 290 | 392 echo Echo command issued into output |
| 393 timing Report execution times | |
| 394 abbrev Accept abbreviated commands | |
|
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395 ''') |
| 230 | 396 |
|
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397 def poutput(self, msg): |
| 284 | 398 if msg: |
| 399 self.stdout.write(msg) | |
| 400 if msg[-1] != '\n': | |
| 401 self.stdout.write('\n') | |
| 276 | 402 def perror(self, errmsg, statement=None): |
| 282 | 403 if self.debug: |
| 404 traceback.print_exc() | |
|
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405 print str(errmsg) |
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406 def pfeedback(self, msg): |
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407 """For printing nonessential feedback. Can be silenced with `quiet`. |
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408 Inclusion in redirected output is controlled by `feedback_to_output`.""" |
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409 if not self.quiet: |
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410 if self.feedback_to_output: |
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411 self.poutput(msg) |
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412 else: |
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413 print (msg) |
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414 _STOP_AND_EXIT = 2 |
| 230 | 415 editor = os.environ.get('EDITOR') |
| 416 if not editor: | |
| 417 if sys.platform[:3] == 'win': | |
| 418 editor = 'notepad' | |
| 419 else: | |
| 420 for editor in ['gedit', 'kate', 'vim', 'emacs', 'nano', 'pico']: | |
| 421 if not os.system('which %s' % (editor)): | |
| 422 break | |
| 312 | 423 |
| 424 colorcodes = {'bold':{True:'\x1b[1m',False:'\x1b[22m'}, | |
| 425 'cyan':{True:'\x1b[36m',False:'\x1b[39m'}, | |
| 426 'blue':{True:'\x1b[34m',False:'\x1b[39m'}, | |
| 427 'red':{True:'\x1b[31m',False:'\x1b[39m'}, | |
| 428 'magenta':{True:'\x1b[35m',False:'\x1b[39m'}, | |
| 429 'green':{True:'\x1b[32m',False:'\x1b[39m'}, | |
| 430 'underline':{True:'\x1b[4m',False:'\x1b[24m'}} | |
| 431 colors = (platform.system() != 'Windows') | |
| 432 def colorize(self, val, color): | |
| 336 | 433 '''Given a string (``val``), returns that string wrapped in UNIX-style |
| 434 special characters that turn on (and then off) text color and style. | |
| 435 If the ``colors`` environment paramter is ``False``, or the application | |
| 436 is running on Windows, will return ``val`` unchanged. | |
| 437 Available colors/styles: red/blue/green/cyan/magenta, bold, underline''' | |
| 312 | 438 if self.colors and (self.stdout == self.initial_stdout): |
| 439 return self.colorcodes[color][True] + val + self.colorcodes[color][False] | |
| 440 return val | |
| 441 | |
| 230 | 442 def do_cmdenvironment(self, args): |
| 443 '''Summary report of interactive parameters.''' | |
| 444 self.stdout.write(""" | |
| 445 Commands are %(casesensitive)scase-sensitive. | |
| 446 Commands may be terminated with: %(terminators)s | |
| 237 | 447 Settable parameters: %(settable)s\n""" % \ |
| 230 | 448 { 'casesensitive': (self.case_insensitive and 'not ') or '', |
| 449 'terminators': str(self.terminators), | |
| 450 'settable': ' '.join(self.settable) | |
| 451 }) | |
| 452 | |
| 453 def do_help(self, arg): | |
|
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454 if arg: |
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455 funcname = self.func_named(arg) |
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456 if funcname: |
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457 fn = getattr(self, funcname) |
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458 try: |
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459 fn.optionParser.print_help(file=self.stdout) |
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460 except AttributeError: |
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461 cmd.Cmd.do_help(self, funcname[3:]) |
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462 else: |
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463 cmd.Cmd.do_help(self, arg) |
| 230 | 464 |
| 465 def __init__(self, *args, **kwargs): | |
| 466 cmd.Cmd.__init__(self, *args, **kwargs) | |
| 271 | 467 self.initial_stdout = sys.stdout |
| 230 | 468 self.history = History() |
| 469 self._init_parser() | |
| 470 self.pystate = {} | |
|
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471 self.shortcuts = sorted(self.shortcuts.items(), reverse=True) |
|
247
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472 self.keywords = self.reserved_words + [fname[3:] for fname in dir(self) |
| 290 | 473 if fname.startswith('do_')] |
| 317 | 474 def linelist(arg): |
| 475 result = [] | |
| 476 | |
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477 self.doubleDashComment = pyparsing.NotAny(pyparsing.Or(options_defined)) + pyparsing.Literal('--') + pyparsing.restOfLine |
| 290 | 478 |
| 230 | 479 def do_shortcuts(self, args): |
| 480 """Lists single-key shortcuts available.""" | |
|
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481 result = "\n".join('%s: %s' % (sc[0], sc[1]) for sc in sorted(self.shortcuts)) |
| 230 | 482 self.stdout.write("Single-key shortcuts for other commands:\n%s\n" % (result)) |
| 483 | |
| 484 prefixParser = pyparsing.Empty() | |
| 485 commentGrammars = pyparsing.Or([pyparsing.pythonStyleComment, pyparsing.cStyleComment]) | |
| 486 commentGrammars.addParseAction(lambda x: '') | |
|
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487 commentInProgress = pyparsing.Literal('/*') + pyparsing.SkipTo( |
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488 pyparsing.stringEnd ^ '*/') |
| 230 | 489 terminators = [';'] |
| 490 blankLinesAllowed = False | |
| 491 multilineCommands = [] | |
| 492 | |
| 493 def _init_parser(self): | |
| 494 r''' | |
| 495 >>> c = Cmd() | |
| 496 >>> c.multilineCommands = ['multiline'] | |
| 497 >>> c.case_insensitive = True | |
| 498 >>> c._init_parser() | |
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499 >>> print (c.parser.parseString('').dump()) |
| 313 | 500 [] |
| 501 >>> print (c.parser.parseString('').dump()) | |
| 230 | 502 [] |
|
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503 >>> print (c.parser.parseString('/* empty command */').dump()) |
| 230 | 504 [] |
|
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505 >>> print (c.parser.parseString('plainword').dump()) |
| 230 | 506 ['plainword', ''] |
| 507 - command: plainword | |
| 508 - statement: ['plainword', ''] | |
| 509 - command: plainword | |
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510 >>> print (c.parser.parseString('termbare;').dump()) |
| 230 | 511 ['termbare', '', ';', ''] |
| 512 - command: termbare | |
| 513 - statement: ['termbare', '', ';'] | |
| 514 - command: termbare | |
| 515 - terminator: ; | |
| 516 - terminator: ; | |
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517 >>> print (c.parser.parseString('termbare; suffx').dump()) |
| 230 | 518 ['termbare', '', ';', 'suffx'] |
| 519 - command: termbare | |
| 520 - statement: ['termbare', '', ';'] | |
| 521 - command: termbare | |
| 522 - terminator: ; | |
| 523 - suffix: suffx | |
| 524 - terminator: ; | |
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525 >>> print (c.parser.parseString('barecommand').dump()) |
| 230 | 526 ['barecommand', ''] |
| 527 - command: barecommand | |
| 528 - statement: ['barecommand', ''] | |
| 529 - command: barecommand | |
|
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530 >>> print (c.parser.parseString('COMmand with args').dump()) |
| 230 | 531 ['command', 'with args'] |
| 532 - args: with args | |
| 533 - command: command | |
| 534 - statement: ['command', 'with args'] | |
| 535 - args: with args | |
| 536 - command: command | |
|
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537 >>> print (c.parser.parseString('command with args and terminator; and suffix').dump()) |
| 230 | 538 ['command', 'with args and terminator', ';', 'and suffix'] |
| 539 - args: with args and terminator | |
| 540 - command: command | |
| 541 - statement: ['command', 'with args and terminator', ';'] | |
| 542 - args: with args and terminator | |
| 543 - command: command | |
| 544 - terminator: ; | |
| 545 - suffix: and suffix | |
| 546 - terminator: ; | |
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547 >>> print (c.parser.parseString('simple | piped').dump()) |
| 230 | 548 ['simple', '', '|', ' piped'] |
| 549 - command: simple | |
| 550 - pipeTo: piped | |
| 551 - statement: ['simple', ''] | |
| 552 - command: simple | |
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553 >>> print (c.parser.parseString('double-pipe || is not a pipe').dump()) |
| 230 | 554 ['double', '-pipe || is not a pipe'] |
| 555 - args: -pipe || is not a pipe | |
| 556 - command: double | |
| 557 - statement: ['double', '-pipe || is not a pipe'] | |
| 558 - args: -pipe || is not a pipe | |
| 559 - command: double | |
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560 >>> print (c.parser.parseString('command with args, terminator;sufx | piped').dump()) |
| 230 | 561 ['command', 'with args, terminator', ';', 'sufx', '|', ' piped'] |
| 562 - args: with args, terminator | |
| 563 - command: command | |
| 564 - pipeTo: piped | |
| 565 - statement: ['command', 'with args, terminator', ';'] | |
| 566 - args: with args, terminator | |
| 567 - command: command | |
| 568 - terminator: ; | |
| 569 - suffix: sufx | |
| 570 - terminator: ; | |
|
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571 >>> print (c.parser.parseString('output into > afile.txt').dump()) |
| 230 | 572 ['output', 'into', '>', 'afile.txt'] |
| 573 - args: into | |
| 574 - command: output | |
| 575 - output: > | |
| 576 - outputTo: afile.txt | |
| 577 - statement: ['output', 'into'] | |
| 578 - args: into | |
| 579 - command: output | |
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580 >>> print (c.parser.parseString('output into;sufx | pipethrume plz > afile.txt').dump()) |
| 230 | 581 ['output', 'into', ';', 'sufx', '|', ' pipethrume plz', '>', 'afile.txt'] |
| 582 - args: into | |
| 583 - command: output | |
| 584 - output: > | |
| 585 - outputTo: afile.txt | |
| 586 - pipeTo: pipethrume plz | |
| 587 - statement: ['output', 'into', ';'] | |
| 588 - args: into | |
| 589 - command: output | |
| 590 - terminator: ; | |
| 591 - suffix: sufx | |
| 592 - terminator: ; | |
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593 >>> print (c.parser.parseString('output to paste buffer >> ').dump()) |
| 230 | 594 ['output', 'to paste buffer', '>>', ''] |
| 595 - args: to paste buffer | |
| 596 - command: output | |
| 597 - output: >> | |
| 598 - statement: ['output', 'to paste buffer'] | |
| 599 - args: to paste buffer | |
| 600 - command: output | |
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601 >>> print (c.parser.parseString('ignore the /* commented | > */ stuff;').dump()) |
| 230 | 602 ['ignore', 'the /* commented | > */ stuff', ';', ''] |
| 603 - args: the /* commented | > */ stuff | |
| 604 - command: ignore | |
| 605 - statement: ['ignore', 'the /* commented | > */ stuff', ';'] | |
| 606 - args: the /* commented | > */ stuff | |
| 607 - command: ignore | |
| 608 - terminator: ; | |
| 609 - terminator: ; | |
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610 >>> print (c.parser.parseString('has > inside;').dump()) |
| 230 | 611 ['has', '> inside', ';', ''] |
| 612 - args: > inside | |
| 613 - command: has | |
| 614 - statement: ['has', '> inside', ';'] | |
| 615 - args: > inside | |
| 616 - command: has | |
| 617 - terminator: ; | |
| 618 - terminator: ; | |
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619 >>> print (c.parser.parseString('multiline has > inside an unfinished command').dump()) |
| 230 | 620 ['multiline', ' has > inside an unfinished command'] |
| 621 - multilineCommand: multiline | |
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622 >>> print (c.parser.parseString('multiline has > inside;').dump()) |
| 230 | 623 ['multiline', 'has > inside', ';', ''] |
| 624 - args: has > inside | |
| 625 - multilineCommand: multiline | |
| 626 - statement: ['multiline', 'has > inside', ';'] | |
| 627 - args: has > inside | |
| 628 - multilineCommand: multiline | |
| 629 - terminator: ; | |
| 630 - terminator: ; | |
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631 >>> print (c.parser.parseString('multiline command /* with comment in progress;').dump()) |
| 272 | 632 ['multiline', ' command'] |
| 633 - multilineCommand: multiline | |
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634 >>> print (c.parser.parseString('multiline command /* with comment complete */ is done;').dump()) |
| 230 | 635 ['multiline', 'command /* with comment complete */ is done', ';', ''] |
| 636 - args: command /* with comment complete */ is done | |
| 637 - multilineCommand: multiline | |
| 638 - statement: ['multiline', 'command /* with comment complete */ is done', ';'] | |
| 639 - args: command /* with comment complete */ is done | |
| 640 - multilineCommand: multiline | |
| 641 - terminator: ; | |
| 642 - terminator: ; | |
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643 >>> print (c.parser.parseString('multiline command ends\n\n').dump()) |
| 230 | 644 ['multiline', 'command ends', '\n', '\n'] |
| 645 - args: command ends | |
| 646 - multilineCommand: multiline | |
| 647 - statement: ['multiline', 'command ends', '\n', '\n'] | |
| 648 - args: command ends | |
| 649 - multilineCommand: multiline | |
| 650 - terminator: ['\n', '\n'] | |
| 651 - terminator: ['\n', '\n'] | |
| 652 ''' | |
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653 tstr = 'multiline command /* with comment complete */ is done;' |
| 230 | 654 outputParser = (pyparsing.Literal('>>') | (pyparsing.WordStart() + '>') | pyparsing.Regex('[^=]>'))('output') |
| 655 | |
| 656 terminatorParser = pyparsing.Or([(hasattr(t, 'parseString') and t) or pyparsing.Literal(t) for t in self.terminators])('terminator') | |
| 657 stringEnd = pyparsing.stringEnd ^ '\nEOF' | |
| 658 self.multilineCommand = pyparsing.Or([pyparsing.Keyword(c, caseless=self.case_insensitive) for c in self.multilineCommands])('multilineCommand') | |
| 659 oneLineCommand = (~self.multilineCommand + pyparsing.Word(self.legalChars))('command') | |
| 660 pipe = pyparsing.Keyword('|', identChars='|') | |
| 285 | 661 self.commentGrammars.ignore(pyparsing.quotedString).setParseAction(lambda x: '') |
| 230 | 662 afterElements = \ |
| 663 pyparsing.Optional(pipe + pyparsing.SkipTo(outputParser ^ stringEnd)('pipeTo')) + \ | |
| 664 pyparsing.Optional(outputParser + pyparsing.SkipTo(stringEnd).setParseAction(lambda x: x[0].strip())('outputTo')) | |
| 665 if self.case_insensitive: | |
| 666 self.multilineCommand.setParseAction(lambda x: x[0].lower()) | |
| 667 oneLineCommand.setParseAction(lambda x: x[0].lower()) | |
| 668 if self.blankLinesAllowed: | |
| 669 self.blankLineTerminationParser = pyparsing.NoMatch | |
| 670 else: | |
| 671 self.blankLineTerminator = (pyparsing.lineEnd + pyparsing.lineEnd)('terminator') | |
| 672 self.blankLineTerminator.setResultsName('terminator') | |
| 673 self.blankLineTerminationParser = ((self.multilineCommand ^ oneLineCommand) + pyparsing.SkipTo(self.blankLineTerminator).setParseAction(lambda x: x[0].strip())('args') + self.blankLineTerminator)('statement') | |
| 674 self.multilineParser = (((self.multilineCommand ^ oneLineCommand) + SkipToLast(terminatorParser).setParseAction(lambda x: x[0].strip())('args') + terminatorParser)('statement') + | |
| 675 pyparsing.SkipTo(outputParser ^ pipe ^ stringEnd).setParseAction(lambda x: x[0].strip())('suffix') + afterElements) | |
| 250 | 676 self.multilineParser.ignore(self.commentInProgress) |
| 230 | 677 self.singleLineParser = ((oneLineCommand + pyparsing.SkipTo(terminatorParser ^ stringEnd ^ pipe ^ outputParser).setParseAction(lambda x:x[0].strip())('args'))('statement') + |
| 678 pyparsing.Optional(terminatorParser) + afterElements) | |
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679 #self.multilineParser = self.multilineParser.setResultsName('multilineParser') |
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680 #self.singleLineParser = self.singleLineParser.setResultsName('singleLineParser') |
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681 self.blankLineTerminationParser = self.blankLineTerminationParser.setResultsName('statement') |
|
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682 self.parser = self.prefixParser + ( |
| 230 | 683 stringEnd | |
|
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684 self.multilineParser | |
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685 self.singleLineParser | |
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686 self.blankLineTerminationParser | |
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687 self.multilineCommand + pyparsing.SkipTo(stringEnd) |
| 230 | 688 ) |
|
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689 self.parser.ignore(pyparsing.quotedString).ignore(self.commentGrammars) |
| 230 | 690 |
| 691 inputMark = pyparsing.Literal('<') | |
| 692 inputMark.setParseAction(lambda x: '') | |
| 693 fileName = pyparsing.Word(self.legalChars + '/\\') | |
| 694 inputFrom = fileName('inputFrom') | |
| 695 inputFrom.setParseAction(replace_with_file_contents) | |
| 696 # a not-entirely-satisfactory way of distinguishing < as in "import from" from < | |
| 697 # as in "lesser than" | |
| 698 self.inputParser = inputMark + pyparsing.Optional(inputFrom) + pyparsing.Optional('>') + \ | |
| 699 pyparsing.Optional(fileName) + (pyparsing.stringEnd | '|') | |
| 700 self.inputParser.ignore(pyparsing.quotedString).ignore(self.commentGrammars).ignore(self.commentInProgress) | |
| 701 | |
| 702 def preparse(self, raw, **kwargs): | |
| 703 return raw | |
| 704 | |
| 705 def parsed(self, raw, **kwargs): | |
| 706 if isinstance(raw, ParsedString): | |
| 707 p = raw | |
| 708 else: | |
| 292 | 709 # preparse is an overridable hook; default makes no changes |
|
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710 s = self.preparse(raw, **kwargs) |
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711 s = self.inputParser.transformString(s.lstrip()) |
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712 s = self.commentGrammars.transformString(s) |
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713 for (shortcut, expansion) in self.shortcuts: |
| 230 | 714 if s.lower().startswith(shortcut): |
| 715 s = s.replace(shortcut, expansion + ' ', 1) | |
| 716 break | |
| 717 result = self.parser.parseString(s) | |
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718 result['raw'] = raw |
| 230 | 719 result['command'] = result.multilineCommand or result.command |
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720 p = ParsedString(result.args) |
| 230 | 721 p.parsed = result |
| 295 | 722 p.parser = self.parsed |
| 230 | 723 for (key, val) in kwargs.items(): |
| 724 p.parsed[key] = val | |
| 725 return p | |
| 726 | |
| 727 def postparsing_precmd(self, statement): | |
| 728 stop = 0 | |
| 729 return stop, statement | |
|
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730 |
| 230 | 731 def postparsing_postcmd(self, stop): |
| 732 return stop | |
|
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733 def func_named(self, arg): |
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734 result = None |
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735 target = 'do_' + arg |
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736 if target in dir(self): |
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737 result = target |
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738 else: |
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739 if self.abbrev: # accept shortened versions of commands |
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740 funcs = [fname for fname in self.keywords if fname.startswith(arg)] |
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741 if len(funcs) == 1: |
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742 result = 'do_' + funcs[0] |
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743 return result |
| 230 | 744 def onecmd(self, line): |
| 745 """Interpret the argument as though it had been typed in response | |
| 746 to the prompt. | |
| 747 | |
| 748 This may be overridden, but should not normally need to be; | |
| 749 see the precmd() and postcmd() methods for useful execution hooks. | |
| 750 The return value is a flag indicating whether interpretation of | |
| 751 commands by the interpreter should stop. | |
| 752 | |
| 753 This (`cmd2`) version of `onecmd` already override's `cmd`'s `onecmd`. | |
| 754 | |
| 755 """ | |
| 756 if not line: | |
| 757 return self.emptyline() | |
| 758 if not pyparsing.Or(self.commentGrammars).setParseAction(lambda x: '').transformString(line): | |
| 759 return 0 # command was empty except for comments | |
| 760 try: | |
| 761 statement = self.parsed(line) | |
| 762 while statement.parsed.multilineCommand and (statement.parsed.terminator == ''): | |
| 763 statement = '%s\n%s' % (statement.parsed.raw, | |
| 764 self.pseudo_raw_input(self.continuation_prompt)) | |
| 765 statement = self.parsed(statement) | |
| 766 except Exception, e: | |
|
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767 self.perror(e) |
| 230 | 768 return 0 |
| 246 | 769 if statement.parsed.command not in self.excludeFromHistory: |
| 770 self.history.append(statement.parsed.raw) | |
| 230 | 771 try: |
| 772 (stop, statement) = self.postparsing_precmd(statement) | |
| 773 except Exception, e: | |
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774 self.perror(e) |
| 230 | 775 return 0 |
| 776 if stop: | |
| 777 return self.postparsing_postcmd(stop) | |
| 778 | |
| 779 if not statement.parsed.command: | |
| 780 return self.postparsing_postcmd(stop=0) | |
| 781 | |
| 782 statekeeper = None | |
| 783 | |
| 784 if statement.parsed.pipeTo: | |
| 785 redirect = subprocess.Popen(statement.parsed.pipeTo, shell=True, stdout=subprocess.PIPE, stdin=subprocess.PIPE) | |
| 786 statekeeper = Statekeeper(self, ('stdout',)) | |
| 787 self.stdout = redirect.stdin | |
| 788 elif statement.parsed.output: | |
| 789 statekeeper = Statekeeper(self, ('stdout',)) | |
| 790 if statement.parsed.outputTo: | |
| 791 mode = 'w' | |
| 792 if statement.parsed.output == '>>': | |
| 793 mode = 'a' | |
| 794 try: | |
| 795 self.stdout = open(os.path.expanduser(statement.parsed.outputTo), mode) | |
| 282 | 796 except Exception, e: |
|
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797 self.perror(e) |
| 230 | 798 return self.postparsing_postcmd(stop=0) |
| 799 else: | |
| 800 statekeeper = Statekeeper(self, ('stdout',)) | |
| 801 self.stdout = tempfile.TemporaryFile() | |
| 802 if statement.parsed.output == '>>': | |
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803 self.stdout.write(get_paste_buffer()) |
| 230 | 804 try: |
| 251 | 805 try: |
| 292 | 806 # "heart" of the command, replaces cmd's onecmd() |
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807 self.lastcmd = statement.parsed.raw |
| 275 | 808 funcname = self.func_named(statement.parsed.command) |
| 809 if not funcname: | |
| 330 | 810 return self._default(statement) |
| 275 | 811 try: |
| 812 func = getattr(self, funcname) | |
| 813 except AttributeError: | |
| 330 | 814 return self._default(statement) |
| 275 | 815 timestart = datetime.datetime.now() |
| 816 stop = func(statement) | |
| 817 if self.timing: | |
| 818 self.pfeedback('Elapsed: %s' % str(datetime.datetime.now() - timestart)) | |
| 819 except Exception, e: | |
| 276 | 820 self.perror(e, statement) |
| 230 | 821 finally: |
| 822 if statekeeper: | |
| 823 if statement.parsed.output and not statement.parsed.outputTo: | |
| 824 self.stdout.seek(0) | |
| 825 try: | |
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826 write_to_paste_buffer(self.stdout.read()) |
| 230 | 827 except Exception, e: |
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828 self.perror(e) |
| 230 | 829 elif statement.parsed.pipeTo: |
| 830 for result in redirect.communicate(): | |
| 831 statekeeper.stdout.write(result or '') | |
| 832 self.stdout.close() | |
| 833 statekeeper.restore() | |
| 834 | |
| 835 return self.postparsing_postcmd(stop) | |
| 836 | |
| 330 | 837 def _default(self, statement): |
| 838 arg = statement.full_parsed_statement() | |
| 839 if self.default_to_shell: | |
| 840 result = os.system(arg) | |
| 841 if not result: | |
| 842 return self.postparsing_postcmd(None) | |
| 843 return self.postparsing_postcmd(self.default(arg)) | |
| 844 | |
| 230 | 845 def pseudo_raw_input(self, prompt): |
| 846 """copied from cmd's cmdloop; like raw_input, but accounts for changed stdin, stdout""" | |
| 847 | |
| 848 if self.use_rawinput: | |
| 849 try: | |
| 850 line = raw_input(prompt) | |
| 851 except EOFError: | |
| 852 line = 'EOF' | |
| 853 else: | |
| 854 self.stdout.write(prompt) | |
| 855 self.stdout.flush() | |
| 856 line = self.stdin.readline() | |
| 857 if not len(line): | |
| 858 line = 'EOF' | |
| 859 else: | |
| 860 if line[-1] == '\n': # this was always true in Cmd | |
| 861 line = line[:-1] | |
| 862 return line | |
| 282 | 863 |
| 334 | 864 def _cmdloop(self, intro=None): |
| 230 | 865 """Repeatedly issue a prompt, accept input, parse an initial prefix |
| 866 off the received input, and dispatch to action methods, passing them | |
| 867 the remainder of the line as argument. | |
| 868 """ | |
| 869 | |
| 870 # An almost perfect copy from Cmd; however, the pseudo_raw_input portion | |
| 871 # has been split out so that it can be called separately | |
| 872 | |
| 873 self.preloop() | |
| 874 if self.use_rawinput and self.completekey: | |
| 875 try: | |
| 876 import readline | |
| 877 self.old_completer = readline.get_completer() | |
| 878 readline.set_completer(self.complete) | |
| 879 readline.parse_and_bind(self.completekey+": complete") | |
| 880 except ImportError: | |
| 881 pass | |
| 882 try: | |
| 883 if intro is not None: | |
| 884 self.intro = intro | |
| 885 if self.intro: | |
| 886 self.stdout.write(str(self.intro)+"\n") | |
| 887 stop = None | |
| 888 while not stop: | |
| 889 if self.cmdqueue: | |
| 890 line = self.cmdqueue.pop(0) | |
| 891 else: | |
| 892 line = self.pseudo_raw_input(self.prompt) | |
| 893 if (self.echo) and (isinstance(self.stdin, file)): | |
| 894 self.stdout.write(line + '\n') | |
| 895 line = self.precmd(line) | |
| 896 stop = self.onecmd(line) | |
| 897 stop = self.postcmd(stop, line) | |
| 898 self.postloop() | |
| 899 finally: | |
| 900 if self.use_rawinput and self.completekey: | |
| 901 try: | |
| 902 import readline | |
| 903 readline.set_completer(self.old_completer) | |
| 904 except ImportError: | |
| 905 pass | |
| 906 return stop | |
| 907 | |
| 908 def do_EOF(self, arg): | |
| 909 return True | |
| 910 do_eof = do_EOF | |
| 290 | 911 |
| 230 | 912 def do_quit(self, arg): |
| 913 return self._STOP_AND_EXIT | |
| 914 do_exit = do_quit | |
| 915 do_q = do_quit | |
| 916 | |
| 309 | 917 def select(self, options, prompt='Your choice? '): |
| 918 '''Presents a numbered menu to the user. Modelled after | |
| 310 | 919 the bash shell's SELECT. Returns the item chosen. |
| 920 | |
| 921 Argument ``options`` can be: | |
| 332 | 922 |
| 923 | a single string -> will be split into one-word options | |
| 924 | a list of strings -> will be offered as options | |
| 925 | a list of tuples -> interpreted as (value, text), so | |
| 926 that the return value can differ from | |
| 927 the text advertised to the user ''' | |
| 309 | 928 if isinstance(options, basestring): |
| 310 | 929 options = zip(options.split(), options.split()) |
| 930 fulloptions = [] | |
| 931 for opt in options: | |
| 932 if isinstance(opt, basestring): | |
| 933 fulloptions.append((opt, opt)) | |
| 934 else: | |
| 935 try: | |
| 936 fulloptions.append((opt[0], opt[1])) | |
| 937 except IndexError: | |
| 938 fulloptions.append((opt[0], opt[0])) | |
| 939 for (idx, (value, text)) in enumerate(fulloptions): | |
| 940 self.poutput(' %2d. %s\n' % (idx+1, text)) | |
| 309 | 941 while True: |
| 942 response = raw_input(prompt) | |
| 943 try: | |
| 944 response = int(response) | |
| 310 | 945 result = fulloptions[response - 1][0] |
| 309 | 946 break |
| 947 except ValueError: | |
| 948 pass # loop and ask again | |
| 949 return result | |
| 950 | |
| 290 | 951 @options([make_option('-l', '--long', action="store_true", |
| 952 help="describe function of parameter")]) | |
| 953 def do_show(self, arg, opts): | |
| 230 | 954 '''Shows value of a parameter.''' |
| 290 | 955 param = arg.strip().lower() |
| 956 result = {} | |
| 957 maxlen = 0 | |
| 958 for p in self.settable: | |
| 959 if (not param) or p.startswith(param): | |
| 960 result[p] = '%s: %s' % (p, str(getattr(self, p))) | |
| 961 maxlen = max(maxlen, len(result[p])) | |
| 962 if result: | |
| 963 for p in sorted(result): | |
| 964 if opts.long: | |
| 965 self.poutput('%s # %s' % (result[p].ljust(maxlen), self.settable[p])) | |
| 966 else: | |
| 967 self.poutput(result[p]) | |
| 230 | 968 else: |
| 290 | 969 self.perror("Parameter '%s' not supported (type 'show' for list of parameters)." % param) |
| 230 | 970 |
| 971 def do_set(self, arg): | |
| 290 | 972 ''' |
| 973 Sets a cmd2 parameter. Accepts abbreviated parameter names so long | |
| 974 as there is no ambiguity. Call without arguments for a list of | |
| 975 settable parameters with their values.''' | |
| 230 | 976 try: |
| 291 | 977 statement, paramName, val = arg.parsed.raw.split(None, 2) |
| 230 | 978 paramName = paramName.strip().lower() |
| 290 | 979 if paramName not in self.settable: |
| 291 | 980 hits = [p for p in self.settable if p.startswith(paramName)] |
| 290 | 981 if len(hits) == 1: |
| 982 paramName = hits[0] | |
| 983 else: | |
| 984 return self.do_show(paramName) | |
| 985 currentVal = getattr(self, paramName) | |
| 986 if (val[0] == val[-1]) and val[0] in ("'", '"'): | |
| 987 val = val[1:-1] | |
| 988 else: | |
| 989 val = cast(currentVal, val) | |
| 990 setattr(self, paramName, val) | |
| 991 self.stdout.write('%s - was: %s\nnow: %s\n' % (paramName, currentVal, val)) | |
| 992 if currentVal != val: | |
| 993 try: | |
| 994 onchange_hook = getattr(self, '_onchange_%s' % paramName) | |
| 995 onchange_hook(old=currentVal, new=val) | |
| 996 except AttributeError: | |
| 997 pass | |
| 230 | 998 except (ValueError, AttributeError, NotSettableError), e: |
| 999 self.do_show(arg) | |
| 1000 | |
| 1001 def do_pause(self, arg): | |
| 1002 'Displays the specified text then waits for the user to press RETURN.' | |
| 1003 raw_input(arg + '\n') | |
| 1004 | |
| 1005 def do_shell(self, arg): | |
| 1006 'execute a command as if at the OS prompt.' | |
| 1007 os.system(arg) | |
|
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1008 |
| 233 | 1009 def do_py(self, arg): |
| 230 | 1010 ''' |
| 1011 py <command>: Executes a Python command. | |
| 242 | 1012 py: Enters interactive Python mode. |
| 1013 End with `Ctrl-D` (Unix) / `Ctrl-Z` (Windows), `quit()`, 'exit()`. | |
| 241 | 1014 Non-python commands can be issued with `cmd("your command")`. |
| 230 | 1015 ''' |
| 280 | 1016 self.pystate['self'] = self |
| 274 | 1017 arg = arg.parsed.raw[2:].strip() |
| 230 | 1018 if arg.strip(): |
|
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1019 interp = InteractiveInterpreter(locals=self.pystate) |
| 233 | 1020 interp.runcode(arg) |
| 230 | 1021 else: |
| 328 | 1022 localvars = (self.locals_in_py and self.pystate) or {} |
| 339 | 1023 interp = InteractiveConsole(locals=localvars) |
| 233 | 1024 def quit(): |
| 234 | 1025 raise EmbeddedConsoleExit |
| 236 | 1026 def onecmd(arg): |
| 1027 return self.onecmd(arg + '\n') | |
| 233 | 1028 self.pystate['quit'] = quit |
| 1029 self.pystate['exit'] = quit | |
| 328 | 1030 self.pystate['cmd'] = onecmd |
| 234 | 1031 try: |
| 240 | 1032 cprt = 'Type "help", "copyright", "credits" or "license" for more information.' |
|
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1033 keepstate = Statekeeper(sys, ('stdin','stdout')) |
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1034 sys.stdout = self.stdout |
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1035 sys.stdin = self.stdin |
| 240 | 1036 interp.interact(banner= "Python %s on %s\n%s\n(%s)\n%s" % |
| 1037 (sys.version, sys.platform, cprt, self.__class__.__name__, self.do_py.__doc__)) | |
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1038 except EmbeddedConsoleExit: |
| 245 | 1039 pass |
| 1040 keepstate.restore() | |
| 233 | 1041 |
| 230 | 1042 def do_history(self, arg): |
| 1043 """history [arg]: lists past commands issued | |
| 1044 | |
| 314 | 1045 | no arg: list all |
| 1046 | arg is integer: list one history item, by index | |
| 1047 | arg is string: string search | |
| 1048 | arg is /enclosed in forward-slashes/: regular expression search | |
| 230 | 1049 """ |
| 1050 if arg: | |
| 1051 history = self.history.get(arg) | |
| 1052 else: | |
| 1053 history = self.history | |
| 1054 for hi in history: | |
| 1055 self.stdout.write(hi.pr()) | |
| 1056 def last_matching(self, arg): | |
| 1057 try: | |
| 1058 if arg: | |
| 1059 return self.history.get(arg)[-1] | |
| 1060 else: | |
| 1061 return self.history[-1] | |
| 1062 except IndexError: | |
| 1063 return None | |
| 1064 def do_list(self, arg): | |
| 1065 """list [arg]: lists last command issued | |
| 1066 | |
| 307 | 1067 no arg -> list most recent command |
| 230 | 1068 arg is integer -> list one history item, by index |
| 307 | 1069 a..b, a:b, a:, ..b -> list spans from a (or start) to b (or end) |
| 308 | 1070 arg is string -> list all commands matching string search |
| 230 | 1071 arg is /enclosed in forward-slashes/ -> regular expression search |
| 1072 """ | |
| 1073 try: | |
| 308 | 1074 history = self.history.span(arg or '-1') |
| 1075 except IndexError: | |
| 1076 history = self.history.search(arg) | |
| 1077 for hi in history: | |
| 1078 self.poutput(hi.pr()) | |
| 1079 | |
| 230 | 1080 do_hi = do_history |
| 1081 do_l = do_list | |
| 1082 do_li = do_list | |
| 1083 | |
| 1084 def do_ed(self, arg): | |
| 1085 """ed: edit most recent command in text editor | |
| 1086 ed [N]: edit numbered command from history | |
| 1087 ed [filename]: edit specified file name | |
| 1088 | |
| 1089 commands are run after editor is closed. | |
| 1090 "set edit (program-name)" or set EDITOR environment variable | |
| 1091 to control which editing program is used.""" | |
| 1092 if not self.editor: | |
|
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1093 self.perror("Please use 'set editor' to specify your text editing program of choice.") |
| 230 | 1094 return |
| 1095 filename = self.default_file_name | |
| 1096 if arg: | |
| 1097 try: | |
| 1098 buffer = self.last_matching(int(arg)) | |
| 1099 except ValueError: | |
| 1100 filename = arg | |
| 1101 buffer = '' | |
| 1102 else: | |
| 1103 buffer = self.history[-1] | |
| 1104 | |
| 1105 if buffer: | |
| 1106 f = open(os.path.expanduser(filename), 'w') | |
| 1107 f.write(buffer or '') | |
| 1108 f.close() | |
| 1109 | |
| 1110 os.system('%s %s' % (self.editor, filename)) | |
| 1111 self.do__load(filename) | |
| 1112 do_edit = do_ed | |
| 1113 | |
| 1114 saveparser = (pyparsing.Optional(pyparsing.Word(pyparsing.nums)^'*')("idx") + | |
| 1115 pyparsing.Optional(pyparsing.Word(legalChars + '/\\'))("fname") + | |
| 1116 pyparsing.stringEnd) | |
| 1117 def do_save(self, arg): | |
| 1118 """`save [N] [filename.ext]` | |
| 329 | 1119 |
| 230 | 1120 Saves command from history to file. |
| 329 | 1121 |
| 1122 | N => Number of command (from history), or `*`; | |
| 1123 | most recent command if omitted""" | |
| 230 | 1124 |
| 1125 try: | |
| 1126 args = self.saveparser.parseString(arg) | |
| 1127 except pyparsing.ParseException: | |
|
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|
1128 self.perror(self.do_save.__doc__) |
| 230 | 1129 return |
| 1130 fname = args.fname or self.default_file_name | |
| 1131 if args.idx == '*': | |
| 1132 saveme = '\n\n'.join(self.history[:]) | |
| 1133 elif args.idx: | |
| 1134 saveme = self.history[int(args.idx)-1] | |
| 1135 else: | |
| 1136 saveme = self.history[-1] | |
| 1137 try: | |
| 1138 f = open(os.path.expanduser(fname), 'w') | |
| 1139 f.write(saveme) | |
| 1140 f.close() | |
|
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1141 self.pfeedback('Saved to %s' % (fname)) |
| 230 | 1142 except Exception, e: |
|
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1143 self.perror('Error saving %s: %s' % (fname, str(e))) |
| 230 | 1144 |
|
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1145 def read_file_or_url(self, fname): |
|
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1146 # TODO: not working on localhost |
|
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1147 if isinstance(fname, file): |
|
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1148 result = open(fname, 'r') |
|
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1149 else: |
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1150 match = self.urlre.match(fname) |
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1151 if match: |
|
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1152 result = urllib.urlopen(match.group(1)) |
| 230 | 1153 else: |
|
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1154 fname = os.path.expanduser(fname) |
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1155 try: |
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1156 result = open(os.path.expanduser(fname), 'r') |
|
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1157 except IOError: |
|
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1158 result = open('%s.%s' % (os.path.expanduser(fname), |
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1159 self.defaultExtension), 'r') |
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1160 return result |
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1161 |
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1162 def do__relative_load(self, arg=None): |
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1163 ''' |
|
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1164 Runs commands in script at file or URL; if this is called from within an |
|
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1165 already-running script, the filename will be interpreted relative to the |
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1166 already-running script's directory.''' |
|
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1167 if arg: |
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1168 arg = arg.split(None, 1) |
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1169 targetname, args = arg[0], (arg[1:] or [''])[0] |
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1170 targetname = os.path.join(self.current_script_dir or '', targetname) |
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1171 self.do__load('%s %s' % (targetname, args)) |
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1172 |
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1173 urlre = re.compile('(https?://[-\\w\\./]+)') |
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1174 def do_load(self, arg=None): |
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1175 """Runs script of command(s) from a file or URL.""" |
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1176 if arg is None: |
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1177 targetname = self.default_file_name |
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1178 else: |
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1179 arg = arg.split(None, 1) |
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1180 targetname, args = arg[0], (arg[1:] or [''])[0].strip() |
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1181 try: |
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1182 target = self.read_file_or_url(targetname) |
| 230 | 1183 except IOError, e: |
|
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1184 self.perror('Problem accessing script from %s: \n%s' % (targetname, e)) |
| 230 | 1185 return |
|
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1186 keepstate = Statekeeper(self, ('stdin','use_rawinput','prompt', |
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1187 'continuation_prompt','current_script_dir')) |
| 230 | 1188 self.stdin = target |
| 1189 self.use_rawinput = False | |
| 1190 self.prompt = self.continuation_prompt = '' | |
|
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1191 self.current_script_dir = os.path.split(targetname)[0] |
| 334 | 1192 stop = self._cmdloop() |
| 230 | 1193 self.stdin.close() |
| 1194 keepstate.restore() | |
| 1195 self.lastcmd = '' | |
| 1196 return (stop == self._STOP_AND_EXIT) and self._STOP_AND_EXIT | |
| 1197 do__load = do_load # avoid an unfortunate legacy use of do_load from sqlpython | |
| 1198 | |
| 1199 def do_run(self, arg): | |
| 1200 """run [arg]: re-runs an earlier command | |
| 1201 | |
| 1202 no arg -> run most recent command | |
| 1203 arg is integer -> run one history item, by index | |
| 1204 arg is string -> run most recent command by string search | |
| 1205 arg is /enclosed in forward-slashes/ -> run most recent by regex | |
| 1206 """ | |
| 1207 'run [N]: runs the SQL that was run N commands ago' | |
| 1208 runme = self.last_matching(arg) | |
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1209 self.pfeedback(runme) |
| 230 | 1210 if runme: |
| 1211 runme = self.precmd(runme) | |
| 1212 stop = self.onecmd(runme) | |
| 1213 stop = self.postcmd(stop, runme) | |
| 1214 do_r = do_run | |
| 1215 | |
| 1216 def fileimport(self, statement, source): | |
| 1217 try: | |
| 1218 f = open(os.path.expanduser(source)) | |
| 1219 except IOError: | |
| 1220 self.stdout.write("Couldn't read from file %s\n" % source) | |
| 1221 return '' | |
| 1222 data = f.read() | |
| 1223 f.close() | |
| 1224 return data | |
| 334 | 1225 |
| 1226 def runTranscriptTests(self, callargs): | |
| 1227 class TestMyAppCase(Cmd2TestCase): | |
| 1228 CmdApp = self.__class__ | |
| 1229 self.__class__.testfiles = callargs | |
| 1230 sys.argv = [sys.argv[0]] # the --test argument upsets unittest.main() | |
| 1231 testcase = TestMyAppCase() | |
| 1232 runner = unittest.TextTestRunner() | |
| 1233 result = runner.run(testcase) | |
| 1234 result.printErrors() | |
| 1235 | |
| 335 | 1236 def run_commands_at_invocation(self, callargs): |
| 1237 for initial_command in callargs: | |
| 1238 if self.onecmd(initial_command + '\n') == app._STOP_AND_EXIT: | |
| 1239 return | |
| 1240 | |
| 334 | 1241 def cmdloop(self): |
| 1242 parser = optparse.OptionParser() | |
| 1243 parser.add_option('-t', '--test', dest='test', | |
| 1244 action="store_true", | |
| 1245 help='Test against transcript(s) in FILE (wildcards OK)') | |
| 1246 (callopts, callargs) = parser.parse_args() | |
| 1247 if callopts.test: | |
| 1248 self.runTranscriptTests(callargs) | |
| 1249 else: | |
| 335 | 1250 self.run_commands_at_invocation(callargs) |
| 334 | 1251 self._cmdloop() |
| 230 | 1252 |
| 1253 class HistoryItem(str): | |
| 305 | 1254 listformat = '-------------------------[%d]\n%s\n' |
| 230 | 1255 def __init__(self, instr): |
| 1256 str.__init__(self) | |
| 1257 self.lowercase = self.lower() | |
| 1258 self.idx = None | |
| 1259 def pr(self): | |
| 307 | 1260 return self.listformat % (self.idx, str(self)) |
| 230 | 1261 |
| 1262 class History(list): | |
| 305 | 1263 '''A list of HistoryItems that knows how to respond to user requests. |
| 1264 >>> h = History([HistoryItem('first'), HistoryItem('second'), HistoryItem('third'), HistoryItem('fourth')]) | |
| 1265 >>> h.span('-2..') | |
| 1266 ['third', 'fourth'] | |
| 1267 >>> h.span('2..3') | |
| 1268 ['second', 'third'] | |
| 1269 >>> h.span('3') | |
| 1270 ['third'] | |
| 1271 >>> h.span(':') | |
| 1272 ['first', 'second', 'third', 'fourth'] | |
| 1273 >>> h.span('2..') | |
| 1274 ['second', 'third', 'fourth'] | |
| 1275 >>> h.span('-1') | |
| 1276 ['fourth'] | |
| 1277 >>> h.span('-2..-3') | |
| 306 | 1278 ['third', 'second'] |
| 308 | 1279 >>> h.search('o') |
| 1280 ['second', 'fourth'] | |
| 1281 >>> h.search('/IR/') | |
| 1282 ['first', 'third'] | |
| 305 | 1283 ''' |
| 1284 def zero_based_index(self, onebased): | |
| 1285 result = onebased | |
| 1286 if result > 0: | |
| 1287 result -= 1 | |
| 1288 return result | |
| 1289 def to_index(self, raw): | |
| 1290 if raw: | |
| 1291 result = self.zero_based_index(int(raw)) | |
| 1292 else: | |
| 1293 result = None | |
| 1294 return result | |
| 308 | 1295 def search(self, target): |
| 1296 target = target.strip() | |
| 1297 if target[0] == target[-1] == '/' and len(target) > 1: | |
| 1298 target = target[1:-1] | |
| 1299 else: | |
| 1300 target = re.escape(target) | |
| 1301 pattern = re.compile(target, re.IGNORECASE) | |
| 1302 return [s for s in self if pattern.search(s)] | |
| 305 | 1303 spanpattern = re.compile(r'^\s*(?P<start>\-?\d+)?\s*(?P<separator>:|(\.{2,}))?\s*(?P<end>\-?\d+)?\s*$') |
| 1304 def span(self, raw): | |
| 308 | 1305 if raw.lower() in ('*', '-', 'all'): |
| 1306 raw = ':' | |
| 305 | 1307 results = self.spanpattern.search(raw) |
| 307 | 1308 if not results: |
| 1309 raise IndexError | |
| 305 | 1310 if not results.group('separator'): |
| 1311 return [self[self.to_index(results.group('start'))]] | |
| 1312 start = self.to_index(results.group('start')) | |
| 1313 end = self.to_index(results.group('end')) | |
| 1314 reverse = False | |
| 1315 if end is not None: | |
| 1316 if end < start: | |
| 1317 (start, end) = (end, start) | |
| 1318 reverse = True | |
| 1319 end += 1 | |
| 1320 result = self[start:end] | |
| 1321 if reverse: | |
| 1322 result.reverse() | |
| 1323 return result | |
| 1324 | |
| 1325 rangePattern = re.compile(r'^\s*(?P<start>[\d]+)?\s*\-\s*(?P<end>[\d]+)?\s*$') | |
| 230 | 1326 def append(self, new): |
| 1327 new = HistoryItem(new) | |
| 1328 list.append(self, new) | |
| 1329 new.idx = len(self) | |
| 1330 def extend(self, new): | |
| 1331 for n in new: | |
| 1332 self.append(n) | |
| 305 | 1333 |
| 1334 def get(self, getme=None, fromEnd=False): | |
| 1335 if not getme: | |
| 1336 return self | |
| 230 | 1337 try: |
| 1338 getme = int(getme) | |
| 1339 if getme < 0: | |
| 1340 return self[:(-1 * getme)] | |
| 1341 else: | |
| 1342 return [self[getme-1]] | |
| 1343 except IndexError: | |
| 1344 return [] | |
| 305 | 1345 except ValueError: |
| 1346 rangeResult = self.rangePattern.search(getme) | |
| 1347 if rangeResult: | |
| 1348 start = rangeResult.group('start') or None | |
| 1349 end = rangeResult.group('start') or None | |
| 1350 if start: | |
| 1351 start = int(start) - 1 | |
| 1352 if end: | |
| 1353 end = int(end) | |
| 1354 return self[start:end] | |
| 1355 | |
| 230 | 1356 getme = getme.strip() |
| 305 | 1357 |
| 230 | 1358 if getme.startswith(r'/') and getme.endswith(r'/'): |
| 1359 finder = re.compile(getme[1:-1], re.DOTALL | re.MULTILINE | re.IGNORECASE) | |
| 1360 def isin(hi): | |
| 1361 return finder.search(hi) | |
| 1362 else: | |
| 1363 def isin(hi): | |
| 1364 return (getme.lower() in hi.lowercase) | |
| 1365 return [itm for itm in self if isin(itm)] | |
| 1366 | |
| 1367 class NotSettableError(Exception): | |
| 1368 pass | |
| 1369 | |
| 1370 def cast(current, new): | |
| 1371 """Tries to force a new value into the same type as the current.""" | |
| 1372 typ = type(current) | |
| 1373 if typ == bool: | |
| 1374 try: | |
| 1375 return bool(int(new)) | |
| 1376 except ValueError, TypeError: | |
| 1377 pass | |
| 1378 try: | |
| 1379 new = new.lower() | |
| 1380 except: | |
| 1381 pass | |
| 1382 if (new=='on') or (new[0] in ('y','t')): | |
| 1383 return True | |
| 1384 if (new=='off') or (new[0] in ('n','f')): | |
| 1385 return False | |
| 1386 else: | |
| 1387 try: | |
| 1388 return typ(new) | |
| 1389 except: | |
| 1390 pass | |
| 1391 print "Problem setting parameter (now %s) to %s; incorrect type?" % (current, new) | |
| 1392 return current | |
| 1393 | |
| 1394 class Statekeeper(object): | |
| 1395 def __init__(self, obj, attribs): | |
| 1396 self.obj = obj | |
| 1397 self.attribs = attribs | |
| 282 | 1398 if self.obj: |
| 1399 self.save() | |
| 230 | 1400 def save(self): |
| 1401 for attrib in self.attribs: | |
| 1402 setattr(self, attrib, getattr(self.obj, attrib)) | |
| 1403 def restore(self): | |
| 282 | 1404 if self.obj: |
| 1405 for attrib in self.attribs: | |
| 1406 setattr(self.obj, attrib, getattr(self, attrib)) | |
| 230 | 1407 |
| 1408 class Borg(object): | |
| 1409 '''All instances of any Borg subclass will share state. | |
| 1410 from Python Cookbook, 2nd Ed., recipe 6.16''' | |
| 1411 _shared_state = {} | |
| 1412 def __new__(cls, *a, **k): | |
| 1413 obj = object.__new__(cls, *a, **k) | |
| 1414 obj.__dict__ = cls._shared_state | |
| 1415 return obj | |
| 1416 | |
| 1417 class OutputTrap(Borg): | |
| 1418 '''Instantiate an OutputTrap to divert/capture ALL stdout output. For use in unit testing. | |
| 1419 Call `tearDown()` to return to normal output.''' | |
| 1420 def __init__(self): | |
| 1421 self.old_stdout = sys.stdout | |
| 1422 self.trap = tempfile.TemporaryFile() | |
| 1423 sys.stdout = self.trap | |
| 1424 def read(self): | |
| 1425 self.trap.seek(0) | |
| 1426 result = self.trap.read() | |
| 1427 self.trap.truncate(0) | |
| 1428 return result.strip('\x00') | |
| 1429 def tearDown(self): | |
| 1430 sys.stdout = self.old_stdout | |
| 1431 | |
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1432 |
| 230 | 1433 class Cmd2TestCase(unittest.TestCase): |
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1434 '''Subclass this, setting CmdApp, to make a unittest.TestCase class |
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1435 that will execute the commands in a transcript file and expect the results shown. |
| 230 | 1436 See example.py''' |
| 1437 CmdApp = None | |
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1438 def fetchTranscripts(self): |
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1439 self.transcripts = {} |
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1440 for fileset in self.CmdApp.testfiles: |
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1441 for fname in glob.glob(fileset): |
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1442 tfile = open(fname) |
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1443 self.transcripts[fname] = iter(tfile.readlines()) |
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1444 tfile.close() |
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1445 if not len(self.transcripts): |
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1446 raise StandardError, "No test files found - nothing to test." |
| 230 | 1447 def setUp(self): |
| 1448 if self.CmdApp: | |
| 1449 self.outputTrap = OutputTrap() | |
| 1450 self.cmdapp = self.CmdApp() | |
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1451 self.fetchTranscripts() |
| 326 | 1452 def runTest(self): # was testall |
| 230 | 1453 if self.CmdApp: |
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1454 its = sorted(self.transcripts.items()) |
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1455 for (fname, transcript) in its: |
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1456 self._test_transcript(fname, transcript) |
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1457 regexPattern = pyparsing.QuotedString(quoteChar=r'/', escChar='\\', multiline=True, unquoteResults=True) |
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1458 regexPattern.ignore(pyparsing.cStyleComment) |
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1459 notRegexPattern = pyparsing.Word(pyparsing.printables) |
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1460 notRegexPattern.setParseAction(lambda t: re.escape(t[0])) |
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1461 expectationParser = regexPattern | notRegexPattern |
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1462 endStrippingRegex = re.compile(r'[ \t]*\n') |
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1463 def _test_transcript(self, fname, transcript): |
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1464 lineNum = 0 |
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1465 try: |
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1466 line = transcript.next() |
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1467 while True: |
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1468 while not line.startswith(self.cmdapp.prompt): |
|
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1469 line = transcript.next() |
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1470 command = [line[len(self.cmdapp.prompt):]] |
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1471 line = transcript.next() |
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1472 while line.startswith(self.cmdapp.continuation_prompt): |
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1473 command.append(line[len(self.cmdapp.continuation_prompt):]) |
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1474 line = transcript.next() |
| 322 | 1475 command = ''.join(command) |
| 305 | 1476 self.cmdapp.onecmd(command) |
| 322 | 1477 result = self.outputTrap.read() |
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1478 if line.startswith(self.cmdapp.prompt): |
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1479 message = '\nFile %s, line %d\nCommand was:\n%s\nExpected: (nothing)\nGot:\n%s\n'%\ |
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1480 (fname, lineNum, command, result) |
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1481 self.assert_(not(result.strip()), message) |
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1482 continue |
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1483 expected = [] |
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1484 while not line.startswith(self.cmdapp.prompt): |
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1485 expected.append(line) |
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1486 line = transcript.next() |
| 322 | 1487 expected = ''.join(expected) |
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1488 message = '\nFile %s, line %d\nCommand was:\n%s\nExpected:\n%s\nGot:\n%s\n'%\ |
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1489 (fname, lineNum, command, expected, result) |
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1490 expected = self.expectationParser.transformString(expected) |
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1491 expected = self.endStrippingRegex.sub('\s*\n', expected) |
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1492 self.assert_(re.match(expected, result, re.MULTILINE | re.DOTALL), message) |
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1493 except StopIteration: |
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1494 pass |
| 230 | 1495 def tearDown(self): |
| 1496 if self.CmdApp: | |
| 1497 self.outputTrap.tearDown() | |
|
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1498 |
| 230 | 1499 if __name__ == '__main__': |
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1500 doctest.testmod(optionflags = doctest.NORMALIZE_WHITESPACE) |
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1501 |
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1502 ''' |
| 327 | 1503 To make your application transcript-testable, replace |
| 1504 | |
| 1505 :: | |
| 1506 | |
| 1507 app = MyApp() | |
| 1508 app.cmdloop() | |
| 1509 | |
| 1510 with | |
| 1511 | |
| 1512 :: | |
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1513 |
| 327 | 1514 app = MyApp() |
| 1515 cmd2.run(app) | |
| 1516 | |
| 1517 Then run a session of your application and paste the entire screen contents | |
| 1518 into a file, ``transcript.test``, and invoke the test like:: | |
| 1519 | |
| 1520 python myapp.py --test transcript.test | |
| 1521 | |
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1522 Wildcards can be used to test against multiple transcript files. |
| 327 | 1523 ''' |
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1524 |
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1525 |