Mercurial > python-cmd2
annotate cmd2.py @ 312:466eaec2c076
colorize taken from sqlpython
author | catherine@Drou |
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date | Sat, 06 Feb 2010 19:21:44 -0500 |
parents | 54e2dd53ba38 |
children | e9f9dc712651 |
rev | line source |
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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 |
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40 from code import InteractiveConsole, InteractiveInterpreter, softspace |
230 | 41 from optparse import make_option |
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42 |
309 | 43 if sys.version_info[0] > 2: |
44 import pyparsing_py3 as pyparsing | |
45 else: | |
46 import pyparsing | |
47 | |
312 | 48 __version__ = '0.6.0' |
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49 |
230 | 50 class OptionParser(optparse.OptionParser): |
51 def exit(self, status=0, msg=None): | |
52 self.values._exit = True | |
53 if msg: | |
311
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54 print (msg) |
230 | 55 |
56 def print_help(self, *args, **kwargs): | |
57 try: | |
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58 print (self._func.__doc__) |
230 | 59 except AttributeError: |
60 pass | |
61 optparse.OptionParser.print_help(self, *args, **kwargs) | |
62 | |
63 def error(self, msg): | |
64 """error(msg : string) | |
65 | |
66 Print a usage message incorporating 'msg' to stderr and exit. | |
67 If you override this in a subclass, it should not return -- it | |
68 should either exit or raise an exception. | |
69 """ | |
70 raise | |
71 | |
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72 def remaining_args(oldArgs, newArgList): |
230 | 73 ''' |
285 | 74 Preserves the spacing originally in the argument after |
75 the removal of options. | |
76 | |
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77 >>> remaining_args('-f bar bar cow', ['bar', 'cow']) |
230 | 78 'bar cow' |
79 ''' | |
80 pattern = '\s+'.join(re.escape(a) for a in newArgList) + '\s*$' | |
81 matchObj = re.search(pattern, oldArgs) | |
82 return oldArgs[matchObj.start():] | |
280 | 83 |
84 def _attr_get_(obj, attr): | |
85 '''Returns an attribute's value, or None (no error) if undefined. | |
286 | 86 Analagous to .get() for dictionaries. Useful when checking for |
87 value of options that may not have been defined on a given | |
88 method.''' | |
280 | 89 try: |
90 return getattr(obj, attr) | |
91 except AttributeError: | |
92 return None | |
283 | 93 |
94 optparse.Values.get = _attr_get_ | |
95 | |
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96 options_defined = [] # used to distinguish --options from SQL-style --comments |
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97 |
230 | 98 def options(option_list): |
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99 '''Used as a decorator and passed a list of optparse-style options, |
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100 alters a cmd2 methodo populate its ``opts`` argument from its |
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101 raw text argument. |
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102 |
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103 Example: transform |
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104 def do_something(self, arg): |
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105 |
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106 into |
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107 @options([make_option('-q', '--quick', action="store_true", |
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108 help="Makes things fast")]) |
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109 def do_something(self, arg, opts): |
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110 if opts.quick: |
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111 self.fast_button = True |
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112 ''' |
296 | 113 if not isinstance(option_list, list): |
298 | 114 option_list = [option_list] |
311
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115 for opt in option_list: |
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116 options_defined.append(pyparsing.Literal(opt.get_opt_string())) |
230 | 117 def option_setup(func): |
118 optionParser = OptionParser() | |
119 for opt in option_list: | |
120 optionParser.add_option(opt) | |
121 optionParser.set_usage("%s [options] arg" % func.__name__.strip('do_')) | |
122 optionParser._func = func | |
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123 def new_func(instance, arg): |
230 | 124 try: |
302 | 125 opts, newArgList = optionParser.parse_args(arg.split()) |
285 | 126 # Must find the remaining args in the original argument list, but |
127 # mustn't include the command itself | |
302 | 128 #if hasattr(arg, 'parsed') and newArgList[0] == arg.parsed.command: |
129 # newArgList = newArgList[1:] | |
130 newArgs = remaining_args(arg, newArgList) | |
301 | 131 if isinstance(arg, ParsedString): |
132 arg = arg.with_args_replaced(newArgs) | |
133 else: | |
134 arg = newArgs | |
230 | 135 except (optparse.OptionValueError, optparse.BadOptionError, |
136 optparse.OptionError, optparse.AmbiguousOptionError, | |
137 optparse.OptionConflictError), e: | |
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138 print (e) |
230 | 139 optionParser.print_help() |
140 return | |
141 if hasattr(opts, '_exit'): | |
142 return None | |
143 result = func(instance, arg, opts) | |
144 return result | |
289 | 145 new_func.__doc__ = '%s\n%s' % (func.__doc__, optionParser.format_help()) |
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146 return new_func |
230 | 147 return option_setup |
148 | |
149 class PasteBufferError(EnvironmentError): | |
150 if sys.platform[:3] == 'win': | |
151 errmsg = """Redirecting to or from paste buffer requires pywin32 | |
152 to be installed on operating system. | |
153 Download from http://sourceforge.net/projects/pywin32/""" | |
154 else: | |
155 errmsg = """Redirecting to or from paste buffer requires xclip | |
156 to be installed on operating system. | |
157 On Debian/Ubuntu, 'sudo apt-get install xclip' will install it.""" | |
158 def __init__(self): | |
159 Exception.__init__(self, self.errmsg) | |
160 | |
161 pastebufferr = """Redirecting to or from paste buffer requires %s | |
162 to be installed on operating system. | |
163 %s""" | |
286 | 164 |
230 | 165 if subprocess.mswindows: |
166 try: | |
167 import win32clipboard | |
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168 def get_paste_buffer(): |
230 | 169 win32clipboard.OpenClipboard(0) |
170 try: | |
171 result = win32clipboard.GetClipboardData() | |
172 except TypeError: | |
173 result = '' #non-text | |
174 win32clipboard.CloseClipboard() | |
175 return result | |
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176 def write_to_paste_buffer(txt): |
230 | 177 win32clipboard.OpenClipboard(0) |
178 win32clipboard.EmptyClipboard() | |
179 win32clipboard.SetClipboardText(txt) | |
180 win32clipboard.CloseClipboard() | |
181 except ImportError: | |
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182 def get_paste_buffer(*args): |
230 | 183 raise OSError, pastebufferr % ('pywin32', 'Download from http://sourceforge.net/projects/pywin32/') |
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184 setPasteBuffer = get_paste_buffer |
230 | 185 else: |
186 can_clip = False | |
187 try: | |
188 subprocess.check_call('xclip -o -sel clip', shell=True, stdout=subprocess.PIPE, stdin=subprocess.PIPE) | |
189 can_clip = True | |
190 except AttributeError: # check_call not defined, Python < 2.5 | |
191 teststring = 'Testing for presence of xclip.' | |
192 xclipproc = subprocess.Popen('xclip -sel clip', shell=True, stdout=subprocess.PIPE, stdin=subprocess.PIPE) | |
193 xclipproc.stdin.write(teststring) | |
194 xclipproc.stdin.close() | |
195 xclipproc = subprocess.Popen('xclip -o -sel clip', shell=True, stdout=subprocess.PIPE, stdin=subprocess.PIPE) | |
196 if xclipproc.stdout.read() == teststring: | |
197 can_clip = True | |
198 except (subprocess.CalledProcessError, OSError, IOError): | |
199 pass | |
200 if can_clip: | |
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201 def get_paste_buffer(): |
230 | 202 xclipproc = subprocess.Popen('xclip -o -sel clip', shell=True, stdout=subprocess.PIPE, stdin=subprocess.PIPE) |
203 return xclipproc.stdout.read() | |
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204 def write_to_paste_buffer(txt): |
230 | 205 xclipproc = subprocess.Popen('xclip -sel clip', shell=True, stdout=subprocess.PIPE, stdin=subprocess.PIPE) |
206 xclipproc.stdin.write(txt) | |
207 xclipproc.stdin.close() | |
208 # but we want it in both the "primary" and "mouse" clipboards | |
209 xclipproc = subprocess.Popen('xclip', shell=True, stdout=subprocess.PIPE, stdin=subprocess.PIPE) | |
210 xclipproc.stdin.write(txt) | |
211 xclipproc.stdin.close() | |
212 else: | |
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213 def get_paste_buffer(*args): |
230 | 214 raise OSError, pastebufferr % ('xclip', 'On Debian/Ubuntu, install with "sudo apt-get install xclip"') |
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215 setPasteBuffer = get_paste_buffer |
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216 writeToPasteBuffer = get_paste_buffer |
230 | 217 |
218 pyparsing.ParserElement.setDefaultWhitespaceChars(' \t') | |
219 | |
220 class ParsedString(str): | |
300
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221 def full_parsed_statement(self): |
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222 new = ParsedString('%s %s' % (self.parsed.command, self.parsed.args)) |
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223 new.parsed = self.parsed |
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224 new.parser = self.parser |
301 | 225 return new |
226 def with_args_replaced(self, newargs): | |
227 new = ParsedString(newargs) | |
228 new.parsed = self.parsed | |
229 new.parser = self.parser | |
230 new.parsed['args'] = newargs | |
231 new.parsed.statement['args'] = newargs | |
232 return new | |
230 | 233 |
234 class SkipToLast(pyparsing.SkipTo): | |
235 def parseImpl( self, instring, loc, doActions=True ): | |
236 resultStore = [] | |
237 startLoc = loc | |
238 instrlen = len(instring) | |
239 expr = self.expr | |
240 failParse = False | |
241 while loc <= instrlen: | |
242 try: | |
243 if self.failOn: | |
244 failParse = True | |
245 self.failOn.tryParse(instring, loc) | |
246 failParse = False | |
247 loc = expr._skipIgnorables( instring, loc ) | |
248 expr._parse( instring, loc, doActions=False, callPreParse=False ) | |
249 skipText = instring[startLoc:loc] | |
250 if self.includeMatch: | |
251 loc,mat = expr._parse(instring,loc,doActions,callPreParse=False) | |
252 if mat: | |
253 skipRes = ParseResults( skipText ) | |
254 skipRes += mat | |
255 resultStore.append((loc, [ skipRes ])) | |
256 else: | |
257 resultStore,append((loc, [ skipText ])) | |
258 else: | |
259 resultStore.append((loc, [ skipText ])) | |
260 loc += 1 | |
261 except (pyparsing.ParseException,IndexError): | |
262 if failParse: | |
263 raise | |
264 else: | |
265 loc += 1 | |
266 if resultStore: | |
267 return resultStore[-1] | |
268 else: | |
269 exc = self.myException | |
270 exc.loc = loc | |
271 exc.pstr = instring | |
272 raise exc | |
273 | |
274 def replace_with_file_contents(fname): | |
275 if fname: | |
276 try: | |
277 result = open(os.path.expanduser(fname[0])).read() | |
278 except IOError: | |
279 result = '< %s' % fname[0] # wasn't a file after all | |
280 else: | |
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281 result = get_paste_buffer() |
233 | 282 return result |
283 | |
234 | 284 class EmbeddedConsoleExit(Exception): |
285 pass | |
286 | |
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287 class MyInteractiveConsole(InteractiveConsole): |
234 | 288 def runcode(self, code): |
289 """Execute a code object. | |
290 | |
291 When an exception occurs, self.showtraceback() is called to | |
292 display a traceback. All exceptions are caught except | |
293 SystemExit, which is reraised. | |
294 | |
295 A note about KeyboardInterrupt: this exception may occur | |
296 elsewhere in this code, and may not always be caught. The | |
297 caller should be prepared to deal with it. | |
298 | |
299 Copied directly from code.InteractiveInterpreter, except for | |
300 EmbeddedConsoleExit exceptions. | |
301 """ | |
302 try: | |
303 exec code in self.locals | |
304 except (SystemExit, EmbeddedConsoleExit): | |
305 raise | |
306 except: | |
307 self.showtraceback() | |
308 else: | |
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309 if softspace(sys.stdout, 0): |
311
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310 print () |
234 | 311 |
290 | 312 def ljust(x, width, fillchar=' '): |
313 'analogous to str.ljust, but works for lists' | |
314 if hasattr(x, 'ljust'): | |
315 return x.ljust(width, fillchar) | |
316 else: | |
317 if len(x) < width: | |
318 x = (x + [fillchar] * width)[:width] | |
319 return x | |
320 | |
230 | 321 class Cmd(cmd.Cmd): |
322 echo = False | |
286 | 323 case_insensitive = True # Commands recognized regardless of case |
230 | 324 continuation_prompt = '> ' |
286 | 325 timing = False # Prints elapsed time for each command |
326 # make sure your terminators are not in legalChars! | |
327 legalChars = '!#$%.:?@_' + pyparsing.alphanums + pyparsing.alphas8bit | |
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328 shortcuts = {'?': 'help', '!': 'shell', '@': 'load', '@@': '_relative_load'} |
230 | 329 excludeFromHistory = '''run r list l history hi ed edit li eof'''.split() |
330 noSpecialParse = 'set ed edit exit'.split() | |
286 | 331 defaultExtension = 'txt' # For ``save``, ``load``, etc. |
332 default_file_name = 'command.txt' # For ``save``, ``load``, etc. | |
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333 abbrev = True # Abbreviated commands recognized |
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334 current_script_dir = None |
245 | 335 reserved_words = [] |
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336 feedback_to_output = False # Do include nonessentials in >, | output |
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337 quiet = False # Do not suppress nonessential output |
298 | 338 debug = True |
290 | 339 settable = ''' |
340 prompt | |
312 | 341 colors Colorized output (*nix only) |
290 | 342 continuation_prompt |
343 debug | |
344 default_file_name for `save`, `load`, etc. | |
345 editor | |
346 case_insensitive upper- and lower-case both OK | |
347 feedback_to_output include nonessentials in `|`, `>` results | |
348 quiet | |
349 echo Echo command issued into output | |
350 timing Report execution times | |
351 abbrev Accept abbreviated commands | |
352 '''.splitlines() | |
230 | 353 |
267
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354 def poutput(self, msg): |
284 | 355 if msg: |
356 self.stdout.write(msg) | |
357 if msg[-1] != '\n': | |
358 self.stdout.write('\n') | |
276 | 359 def perror(self, errmsg, statement=None): |
282 | 360 if self.debug: |
361 traceback.print_exc() | |
267
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362 print str(errmsg) |
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363 def pfeedback(self, msg): |
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364 """For printing nonessential feedback. Can be silenced with `quiet`. |
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365 Inclusion in redirected output is controlled by `feedback_to_output`.""" |
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366 if not self.quiet: |
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367 if self.feedback_to_output: |
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368 self.poutput(msg) |
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369 else: |
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370 print (msg) |
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371 _STOP_AND_EXIT = 2 |
230 | 372 editor = os.environ.get('EDITOR') |
373 if not editor: | |
374 if sys.platform[:3] == 'win': | |
375 editor = 'notepad' | |
376 else: | |
377 for editor in ['gedit', 'kate', 'vim', 'emacs', 'nano', 'pico']: | |
378 if not os.system('which %s' % (editor)): | |
379 break | |
312 | 380 |
381 colorcodes = {'bold':{True:'\x1b[1m',False:'\x1b[22m'}, | |
382 'cyan':{True:'\x1b[36m',False:'\x1b[39m'}, | |
383 'blue':{True:'\x1b[34m',False:'\x1b[39m'}, | |
384 'red':{True:'\x1b[31m',False:'\x1b[39m'}, | |
385 'magenta':{True:'\x1b[35m',False:'\x1b[39m'}, | |
386 'green':{True:'\x1b[32m',False:'\x1b[39m'}, | |
387 'underline':{True:'\x1b[4m',False:'\x1b[24m'}} | |
388 colors = (platform.system() != 'Windows') | |
389 def colorize(self, val, color): | |
390 '''Wraps `val` in `color` markers (one of: red/blue/green/cyan/magenta, bold, underline), | |
391 but only if `colors` environment variable is True''' | |
392 if self.colors and (self.stdout == self.initial_stdout): | |
393 return self.colorcodes[color][True] + val + self.colorcodes[color][False] | |
394 return val | |
395 | |
230 | 396 def do_cmdenvironment(self, args): |
397 '''Summary report of interactive parameters.''' | |
398 self.stdout.write(""" | |
399 Commands are %(casesensitive)scase-sensitive. | |
400 Commands may be terminated with: %(terminators)s | |
237 | 401 Settable parameters: %(settable)s\n""" % \ |
230 | 402 { 'casesensitive': (self.case_insensitive and 'not ') or '', |
403 'terminators': str(self.terminators), | |
404 'settable': ' '.join(self.settable) | |
405 }) | |
406 | |
407 def do_help(self, arg): | |
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408 if arg: |
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409 funcname = self.func_named(arg) |
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410 if funcname: |
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411 fn = getattr(self, funcname) |
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412 try: |
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413 fn.optionParser.print_help(file=self.stdout) |
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414 except AttributeError: |
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415 cmd.Cmd.do_help(self, funcname[3:]) |
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416 else: |
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417 cmd.Cmd.do_help(self, arg) |
230 | 418 |
419 def __init__(self, *args, **kwargs): | |
420 cmd.Cmd.__init__(self, *args, **kwargs) | |
271 | 421 self.initial_stdout = sys.stdout |
230 | 422 self.history = History() |
423 self._init_parser() | |
424 self.pystate = {} | |
244
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425 self.shortcuts = sorted(self.shortcuts.items(), reverse=True) |
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426 self.keywords = self.reserved_words + [fname[3:] for fname in dir(self) |
290 | 427 if fname.startswith('do_')] |
428 self.settable = (l.strip() for l in self.settable if l.strip()) | |
429 self.settable = dict(ljust(l.split(None,1), 2, '') for l in self.settable) | |
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430 self.doubleDashComment = pyparsing.NotAny(pyparsing.Or(options_defined)) + pyparsing.Literal('--') + pyparsing.restOfLine |
290 | 431 |
230 | 432 def do_shortcuts(self, args): |
433 """Lists single-key shortcuts available.""" | |
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434 result = "\n".join('%s: %s' % (sc[0], sc[1]) for sc in sorted(self.shortcuts)) |
230 | 435 self.stdout.write("Single-key shortcuts for other commands:\n%s\n" % (result)) |
436 | |
437 prefixParser = pyparsing.Empty() | |
438 commentGrammars = pyparsing.Or([pyparsing.pythonStyleComment, pyparsing.cStyleComment]) | |
439 commentGrammars.addParseAction(lambda x: '') | |
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440 commentInProgress = pyparsing.Literal('/*') + pyparsing.SkipTo( |
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441 pyparsing.stringEnd ^ '*/') |
230 | 442 terminators = [';'] |
443 blankLinesAllowed = False | |
444 multilineCommands = [] | |
445 | |
446 def _init_parser(self): | |
447 r''' | |
448 >>> c = Cmd() | |
449 >>> c.multilineCommands = ['multiline'] | |
450 >>> c.case_insensitive = True | |
451 >>> c._init_parser() | |
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452 >>> print (c.parser.parseString('').dump()) |
230 | 453 [] |
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454 >>> print (c.parser.parseString('/* empty command */').dump()) |
230 | 455 [] |
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456 >>> print (c.parser.parseString('plainword').dump()) |
230 | 457 ['plainword', ''] |
458 - command: plainword | |
459 - statement: ['plainword', ''] | |
460 - command: plainword | |
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461 >>> print (c.parser.parseString('termbare;').dump()) |
230 | 462 ['termbare', '', ';', ''] |
463 - command: termbare | |
464 - statement: ['termbare', '', ';'] | |
465 - command: termbare | |
466 - terminator: ; | |
467 - terminator: ; | |
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468 >>> print (c.parser.parseString('termbare; suffx').dump()) |
230 | 469 ['termbare', '', ';', 'suffx'] |
470 - command: termbare | |
471 - statement: ['termbare', '', ';'] | |
472 - command: termbare | |
473 - terminator: ; | |
474 - suffix: suffx | |
475 - terminator: ; | |
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476 >>> print (c.parser.parseString('barecommand').dump()) |
230 | 477 ['barecommand', ''] |
478 - command: barecommand | |
479 - statement: ['barecommand', ''] | |
480 - command: barecommand | |
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481 >>> print (c.parser.parseString('COMmand with args').dump()) |
230 | 482 ['command', 'with args'] |
483 - args: with args | |
484 - command: command | |
485 - statement: ['command', 'with args'] | |
486 - args: with args | |
487 - command: command | |
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488 >>> print (c.parser.parseString('command with args and terminator; and suffix').dump()) |
230 | 489 ['command', 'with args and terminator', ';', 'and suffix'] |
490 - args: with args and terminator | |
491 - command: command | |
492 - statement: ['command', 'with args and terminator', ';'] | |
493 - args: with args and terminator | |
494 - command: command | |
495 - terminator: ; | |
496 - suffix: and suffix | |
497 - terminator: ; | |
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498 >>> print (c.parser.parseString('simple | piped').dump()) |
230 | 499 ['simple', '', '|', ' piped'] |
500 - command: simple | |
501 - pipeTo: piped | |
502 - statement: ['simple', ''] | |
503 - command: simple | |
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504 >>> print (c.parser.parseString('double-pipe || is not a pipe').dump()) |
230 | 505 ['double', '-pipe || is not a pipe'] |
506 - args: -pipe || is not a pipe | |
507 - command: double | |
508 - statement: ['double', '-pipe || is not a pipe'] | |
509 - args: -pipe || is not a pipe | |
510 - command: double | |
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511 >>> print (c.parser.parseString('command with args, terminator;sufx | piped').dump()) |
230 | 512 ['command', 'with args, terminator', ';', 'sufx', '|', ' piped'] |
513 - args: with args, terminator | |
514 - command: command | |
515 - pipeTo: piped | |
516 - statement: ['command', 'with args, terminator', ';'] | |
517 - args: with args, terminator | |
518 - command: command | |
519 - terminator: ; | |
520 - suffix: sufx | |
521 - terminator: ; | |
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522 >>> print (c.parser.parseString('output into > afile.txt').dump()) |
230 | 523 ['output', 'into', '>', 'afile.txt'] |
524 - args: into | |
525 - command: output | |
526 - output: > | |
527 - outputTo: afile.txt | |
528 - statement: ['output', 'into'] | |
529 - args: into | |
530 - command: output | |
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531 >>> print (c.parser.parseString('output into;sufx | pipethrume plz > afile.txt').dump()) |
230 | 532 ['output', 'into', ';', 'sufx', '|', ' pipethrume plz', '>', 'afile.txt'] |
533 - args: into | |
534 - command: output | |
535 - output: > | |
536 - outputTo: afile.txt | |
537 - pipeTo: pipethrume plz | |
538 - statement: ['output', 'into', ';'] | |
539 - args: into | |
540 - command: output | |
541 - terminator: ; | |
542 - suffix: sufx | |
543 - terminator: ; | |
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544 >>> print (c.parser.parseString('output to paste buffer >> ').dump()) |
230 | 545 ['output', 'to paste buffer', '>>', ''] |
546 - args: to paste buffer | |
547 - command: output | |
548 - output: >> | |
549 - statement: ['output', 'to paste buffer'] | |
550 - args: to paste buffer | |
551 - command: output | |
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552 >>> print (c.parser.parseString('ignore the /* commented | > */ stuff;').dump()) |
230 | 553 ['ignore', 'the /* commented | > */ stuff', ';', ''] |
554 - args: the /* commented | > */ stuff | |
555 - command: ignore | |
556 - statement: ['ignore', 'the /* commented | > */ stuff', ';'] | |
557 - args: the /* commented | > */ stuff | |
558 - command: ignore | |
559 - terminator: ; | |
560 - terminator: ; | |
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561 >>> print (c.parser.parseString('has > inside;').dump()) |
230 | 562 ['has', '> inside', ';', ''] |
563 - args: > inside | |
564 - command: has | |
565 - statement: ['has', '> inside', ';'] | |
566 - args: > inside | |
567 - command: has | |
568 - terminator: ; | |
569 - terminator: ; | |
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570 >>> print (c.parser.parseString('multiline has > inside an unfinished command').dump()) |
230 | 571 ['multiline', ' has > inside an unfinished command'] |
572 - multilineCommand: multiline | |
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573 >>> print (c.parser.parseString('multiline has > inside;').dump()) |
230 | 574 ['multiline', 'has > inside', ';', ''] |
575 - args: has > inside | |
576 - multilineCommand: multiline | |
577 - statement: ['multiline', 'has > inside', ';'] | |
578 - args: has > inside | |
579 - multilineCommand: multiline | |
580 - terminator: ; | |
581 - terminator: ; | |
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582 >>> print (c.parser.parseString('multiline command /* with comment in progress;').dump()) |
272 | 583 ['multiline', ' command'] |
584 - multilineCommand: multiline | |
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585 >>> print (c.parser.parseString('multiline command /* with comment complete */ is done;').dump()) |
230 | 586 ['multiline', 'command /* with comment complete */ is done', ';', ''] |
587 - args: command /* with comment complete */ is done | |
588 - multilineCommand: multiline | |
589 - statement: ['multiline', 'command /* with comment complete */ is done', ';'] | |
590 - args: command /* with comment complete */ is done | |
591 - multilineCommand: multiline | |
592 - terminator: ; | |
593 - terminator: ; | |
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594 >>> print (c.parser.parseString('multiline command ends\n\n').dump()) |
230 | 595 ['multiline', 'command ends', '\n', '\n'] |
596 - args: command ends | |
597 - multilineCommand: multiline | |
598 - statement: ['multiline', 'command ends', '\n', '\n'] | |
599 - args: command ends | |
600 - multilineCommand: multiline | |
601 - terminator: ['\n', '\n'] | |
602 - terminator: ['\n', '\n'] | |
603 ''' | |
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604 tstr = 'multiline command /* with comment complete */ is done;' |
230 | 605 outputParser = (pyparsing.Literal('>>') | (pyparsing.WordStart() + '>') | pyparsing.Regex('[^=]>'))('output') |
606 | |
607 terminatorParser = pyparsing.Or([(hasattr(t, 'parseString') and t) or pyparsing.Literal(t) for t in self.terminators])('terminator') | |
608 stringEnd = pyparsing.stringEnd ^ '\nEOF' | |
609 self.multilineCommand = pyparsing.Or([pyparsing.Keyword(c, caseless=self.case_insensitive) for c in self.multilineCommands])('multilineCommand') | |
610 oneLineCommand = (~self.multilineCommand + pyparsing.Word(self.legalChars))('command') | |
611 pipe = pyparsing.Keyword('|', identChars='|') | |
285 | 612 self.commentGrammars.ignore(pyparsing.quotedString).setParseAction(lambda x: '') |
230 | 613 afterElements = \ |
614 pyparsing.Optional(pipe + pyparsing.SkipTo(outputParser ^ stringEnd)('pipeTo')) + \ | |
615 pyparsing.Optional(outputParser + pyparsing.SkipTo(stringEnd).setParseAction(lambda x: x[0].strip())('outputTo')) | |
616 if self.case_insensitive: | |
617 self.multilineCommand.setParseAction(lambda x: x[0].lower()) | |
618 oneLineCommand.setParseAction(lambda x: x[0].lower()) | |
619 if self.blankLinesAllowed: | |
620 self.blankLineTerminationParser = pyparsing.NoMatch | |
621 else: | |
622 self.blankLineTerminator = (pyparsing.lineEnd + pyparsing.lineEnd)('terminator') | |
623 self.blankLineTerminator.setResultsName('terminator') | |
624 self.blankLineTerminationParser = ((self.multilineCommand ^ oneLineCommand) + pyparsing.SkipTo(self.blankLineTerminator).setParseAction(lambda x: x[0].strip())('args') + self.blankLineTerminator)('statement') | |
625 self.multilineParser = (((self.multilineCommand ^ oneLineCommand) + SkipToLast(terminatorParser).setParseAction(lambda x: x[0].strip())('args') + terminatorParser)('statement') + | |
626 pyparsing.SkipTo(outputParser ^ pipe ^ stringEnd).setParseAction(lambda x: x[0].strip())('suffix') + afterElements) | |
250 | 627 self.multilineParser.ignore(self.commentInProgress) |
230 | 628 self.singleLineParser = ((oneLineCommand + pyparsing.SkipTo(terminatorParser ^ stringEnd ^ pipe ^ outputParser).setParseAction(lambda x:x[0].strip())('args'))('statement') + |
629 pyparsing.Optional(terminatorParser) + afterElements) | |
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630 #self.multilineParser = self.multilineParser.setResultsName('multilineParser') |
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631 #self.singleLineParser = self.singleLineParser.setResultsName('singleLineParser') |
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632 self.blankLineTerminationParser = self.blankLineTerminationParser.setResultsName('statement') |
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633 self.parser = self.prefixParser + ( |
230 | 634 stringEnd | |
266
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635 self.multilineParser | |
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636 self.singleLineParser | |
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637 self.blankLineTerminationParser | |
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638 self.multilineCommand + pyparsing.SkipTo(stringEnd) |
230 | 639 ) |
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640 self.parser.ignore(pyparsing.quotedString).ignore(self.commentGrammars) |
230 | 641 |
642 inputMark = pyparsing.Literal('<') | |
643 inputMark.setParseAction(lambda x: '') | |
644 fileName = pyparsing.Word(self.legalChars + '/\\') | |
645 inputFrom = fileName('inputFrom') | |
646 inputFrom.setParseAction(replace_with_file_contents) | |
647 # a not-entirely-satisfactory way of distinguishing < as in "import from" from < | |
648 # as in "lesser than" | |
649 self.inputParser = inputMark + pyparsing.Optional(inputFrom) + pyparsing.Optional('>') + \ | |
650 pyparsing.Optional(fileName) + (pyparsing.stringEnd | '|') | |
651 self.inputParser.ignore(pyparsing.quotedString).ignore(self.commentGrammars).ignore(self.commentInProgress) | |
652 | |
653 def preparse(self, raw, **kwargs): | |
654 return raw | |
655 | |
656 def parsed(self, raw, **kwargs): | |
657 if isinstance(raw, ParsedString): | |
658 p = raw | |
659 else: | |
292 | 660 # preparse is an overridable hook; default makes no changes |
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661 s = self.preparse(raw, **kwargs) |
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662 s = self.inputParser.transformString(s.lstrip()) |
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663 s = self.commentGrammars.transformString(s) |
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664 for (shortcut, expansion) in self.shortcuts: |
230 | 665 if s.lower().startswith(shortcut): |
666 s = s.replace(shortcut, expansion + ' ', 1) | |
667 break | |
668 result = self.parser.parseString(s) | |
300
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669 result['raw'] = raw |
230 | 670 result['command'] = result.multilineCommand or result.command |
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671 p = ParsedString(result.args) |
230 | 672 p.parsed = result |
295 | 673 p.parser = self.parsed |
230 | 674 for (key, val) in kwargs.items(): |
675 p.parsed[key] = val | |
676 return p | |
677 | |
678 def postparsing_precmd(self, statement): | |
679 stop = 0 | |
680 return stop, statement | |
247
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681 |
230 | 682 def postparsing_postcmd(self, stop): |
683 return stop | |
247
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684 def func_named(self, arg): |
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685 result = None |
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686 target = 'do_' + arg |
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687 if target in dir(self): |
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688 result = target |
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689 else: |
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690 if self.abbrev: # accept shortened versions of commands |
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691 funcs = [fname for fname in self.keywords if fname.startswith(arg)] |
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692 if len(funcs) == 1: |
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693 result = 'do_' + funcs[0] |
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694 return result |
230 | 695 def onecmd(self, line): |
696 """Interpret the argument as though it had been typed in response | |
697 to the prompt. | |
698 | |
699 This may be overridden, but should not normally need to be; | |
700 see the precmd() and postcmd() methods for useful execution hooks. | |
701 The return value is a flag indicating whether interpretation of | |
702 commands by the interpreter should stop. | |
703 | |
704 This (`cmd2`) version of `onecmd` already override's `cmd`'s `onecmd`. | |
705 | |
706 """ | |
707 if not line: | |
708 return self.emptyline() | |
709 if not pyparsing.Or(self.commentGrammars).setParseAction(lambda x: '').transformString(line): | |
710 return 0 # command was empty except for comments | |
711 try: | |
712 statement = self.parsed(line) | |
713 while statement.parsed.multilineCommand and (statement.parsed.terminator == ''): | |
714 statement = '%s\n%s' % (statement.parsed.raw, | |
715 self.pseudo_raw_input(self.continuation_prompt)) | |
716 statement = self.parsed(statement) | |
717 except Exception, e: | |
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718 self.perror(e) |
230 | 719 return 0 |
246 | 720 if statement.parsed.command not in self.excludeFromHistory: |
721 self.history.append(statement.parsed.raw) | |
230 | 722 try: |
723 (stop, statement) = self.postparsing_precmd(statement) | |
724 except Exception, e: | |
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725 self.perror(e) |
230 | 726 return 0 |
727 if stop: | |
728 return self.postparsing_postcmd(stop) | |
729 | |
730 if not statement.parsed.command: | |
731 return self.postparsing_postcmd(stop=0) | |
732 | |
733 statekeeper = None | |
734 | |
735 if statement.parsed.pipeTo: | |
736 redirect = subprocess.Popen(statement.parsed.pipeTo, shell=True, stdout=subprocess.PIPE, stdin=subprocess.PIPE) | |
737 statekeeper = Statekeeper(self, ('stdout',)) | |
738 self.stdout = redirect.stdin | |
739 elif statement.parsed.output: | |
740 statekeeper = Statekeeper(self, ('stdout',)) | |
741 if statement.parsed.outputTo: | |
742 mode = 'w' | |
743 if statement.parsed.output == '>>': | |
744 mode = 'a' | |
745 try: | |
746 self.stdout = open(os.path.expanduser(statement.parsed.outputTo), mode) | |
282 | 747 except Exception, e: |
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748 self.perror(e) |
230 | 749 return self.postparsing_postcmd(stop=0) |
750 else: | |
751 statekeeper = Statekeeper(self, ('stdout',)) | |
752 self.stdout = tempfile.TemporaryFile() | |
753 if statement.parsed.output == '>>': | |
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754 self.stdout.write(get_paste_buffer()) |
230 | 755 try: |
251 | 756 try: |
292 | 757 # "heart" of the command, replaces cmd's onecmd() |
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758 self.lastcmd = statement.parsed.raw |
275 | 759 funcname = self.func_named(statement.parsed.command) |
760 if not funcname: | |
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761 return self.postparsing_postcmd(self.default(statement.full_parsed_statement())) |
275 | 762 try: |
763 func = getattr(self, funcname) | |
764 except AttributeError: | |
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765 return self.postparsing_postcmd(self.default(statement.full_parsed_statement())) |
275 | 766 timestart = datetime.datetime.now() |
767 stop = func(statement) | |
768 if self.timing: | |
769 self.pfeedback('Elapsed: %s' % str(datetime.datetime.now() - timestart)) | |
770 except Exception, e: | |
276 | 771 self.perror(e, statement) |
230 | 772 finally: |
773 if statekeeper: | |
774 if statement.parsed.output and not statement.parsed.outputTo: | |
775 self.stdout.seek(0) | |
776 try: | |
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777 write_to_paste_buffer(self.stdout.read()) |
230 | 778 except Exception, e: |
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779 self.perror(e) |
230 | 780 elif statement.parsed.pipeTo: |
781 for result in redirect.communicate(): | |
782 statekeeper.stdout.write(result or '') | |
783 self.stdout.close() | |
784 statekeeper.restore() | |
785 | |
786 return self.postparsing_postcmd(stop) | |
787 | |
788 def pseudo_raw_input(self, prompt): | |
789 """copied from cmd's cmdloop; like raw_input, but accounts for changed stdin, stdout""" | |
790 | |
791 if self.use_rawinput: | |
792 try: | |
793 line = raw_input(prompt) | |
794 except EOFError: | |
795 line = 'EOF' | |
796 else: | |
797 self.stdout.write(prompt) | |
798 self.stdout.flush() | |
799 line = self.stdin.readline() | |
800 if not len(line): | |
801 line = 'EOF' | |
802 else: | |
803 if line[-1] == '\n': # this was always true in Cmd | |
804 line = line[:-1] | |
805 return line | |
282 | 806 |
230 | 807 def cmdloop(self, intro=None): |
808 """Repeatedly issue a prompt, accept input, parse an initial prefix | |
809 off the received input, and dispatch to action methods, passing them | |
810 the remainder of the line as argument. | |
811 """ | |
812 | |
813 # An almost perfect copy from Cmd; however, the pseudo_raw_input portion | |
814 # has been split out so that it can be called separately | |
815 | |
816 self.preloop() | |
817 if self.use_rawinput and self.completekey: | |
818 try: | |
819 import readline | |
820 self.old_completer = readline.get_completer() | |
821 readline.set_completer(self.complete) | |
822 readline.parse_and_bind(self.completekey+": complete") | |
823 except ImportError: | |
824 pass | |
825 try: | |
826 if intro is not None: | |
827 self.intro = intro | |
828 if self.intro: | |
829 self.stdout.write(str(self.intro)+"\n") | |
830 stop = None | |
831 while not stop: | |
832 if self.cmdqueue: | |
833 line = self.cmdqueue.pop(0) | |
834 else: | |
835 line = self.pseudo_raw_input(self.prompt) | |
836 if (self.echo) and (isinstance(self.stdin, file)): | |
837 self.stdout.write(line + '\n') | |
838 line = self.precmd(line) | |
839 stop = self.onecmd(line) | |
840 stop = self.postcmd(stop, line) | |
841 self.postloop() | |
842 finally: | |
843 if self.use_rawinput and self.completekey: | |
844 try: | |
845 import readline | |
846 readline.set_completer(self.old_completer) | |
847 except ImportError: | |
848 pass | |
849 return stop | |
850 | |
851 def do_EOF(self, arg): | |
852 return True | |
853 do_eof = do_EOF | |
290 | 854 |
230 | 855 def do_quit(self, arg): |
856 return self._STOP_AND_EXIT | |
857 do_exit = do_quit | |
858 do_q = do_quit | |
859 | |
309 | 860 def select(self, options, prompt='Your choice? '): |
861 '''Presents a numbered menu to the user. Modelled after | |
310 | 862 the bash shell's SELECT. Returns the item chosen. |
863 | |
864 Argument ``options`` can be: | |
865 a single string -> will be split into one-word options | |
866 a list of strings -> will be offered as options | |
867 a list of tuples -> interpreted as (value, text), so | |
868 that the return value can differ from | |
869 the text advertised to the user ''' | |
309 | 870 if isinstance(options, basestring): |
310 | 871 options = zip(options.split(), options.split()) |
872 fulloptions = [] | |
873 for opt in options: | |
874 if isinstance(opt, basestring): | |
875 fulloptions.append((opt, opt)) | |
876 else: | |
877 try: | |
878 fulloptions.append((opt[0], opt[1])) | |
879 except IndexError: | |
880 fulloptions.append((opt[0], opt[0])) | |
881 for (idx, (value, text)) in enumerate(fulloptions): | |
882 self.poutput(' %2d. %s\n' % (idx+1, text)) | |
309 | 883 while True: |
884 response = raw_input(prompt) | |
885 try: | |
886 response = int(response) | |
310 | 887 result = fulloptions[response - 1][0] |
309 | 888 break |
889 except ValueError: | |
890 pass # loop and ask again | |
891 return result | |
892 | |
290 | 893 @options([make_option('-l', '--long', action="store_true", |
894 help="describe function of parameter")]) | |
895 def do_show(self, arg, opts): | |
230 | 896 '''Shows value of a parameter.''' |
290 | 897 param = arg.strip().lower() |
898 result = {} | |
899 maxlen = 0 | |
900 for p in self.settable: | |
901 if (not param) or p.startswith(param): | |
902 result[p] = '%s: %s' % (p, str(getattr(self, p))) | |
903 maxlen = max(maxlen, len(result[p])) | |
904 if result: | |
905 for p in sorted(result): | |
906 if opts.long: | |
907 self.poutput('%s # %s' % (result[p].ljust(maxlen), self.settable[p])) | |
908 else: | |
909 self.poutput(result[p]) | |
230 | 910 else: |
290 | 911 self.perror("Parameter '%s' not supported (type 'show' for list of parameters)." % param) |
230 | 912 |
913 def do_set(self, arg): | |
290 | 914 ''' |
915 Sets a cmd2 parameter. Accepts abbreviated parameter names so long | |
916 as there is no ambiguity. Call without arguments for a list of | |
917 settable parameters with their values.''' | |
230 | 918 try: |
291 | 919 statement, paramName, val = arg.parsed.raw.split(None, 2) |
230 | 920 paramName = paramName.strip().lower() |
290 | 921 if paramName not in self.settable: |
291 | 922 hits = [p for p in self.settable if p.startswith(paramName)] |
290 | 923 if len(hits) == 1: |
924 paramName = hits[0] | |
925 else: | |
926 return self.do_show(paramName) | |
927 currentVal = getattr(self, paramName) | |
928 if (val[0] == val[-1]) and val[0] in ("'", '"'): | |
929 val = val[1:-1] | |
930 else: | |
931 val = cast(currentVal, val) | |
932 setattr(self, paramName, val) | |
933 self.stdout.write('%s - was: %s\nnow: %s\n' % (paramName, currentVal, val)) | |
934 if currentVal != val: | |
935 try: | |
936 onchange_hook = getattr(self, '_onchange_%s' % paramName) | |
937 onchange_hook(old=currentVal, new=val) | |
938 except AttributeError: | |
939 pass | |
230 | 940 except (ValueError, AttributeError, NotSettableError), e: |
941 self.do_show(arg) | |
942 | |
943 def do_pause(self, arg): | |
944 'Displays the specified text then waits for the user to press RETURN.' | |
945 raw_input(arg + '\n') | |
946 | |
947 def do_shell(self, arg): | |
948 'execute a command as if at the OS prompt.' | |
949 os.system(arg) | |
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950 |
233 | 951 def do_py(self, arg): |
230 | 952 ''' |
953 py <command>: Executes a Python command. | |
242 | 954 py: Enters interactive Python mode. |
955 End with `Ctrl-D` (Unix) / `Ctrl-Z` (Windows), `quit()`, 'exit()`. | |
241 | 956 Non-python commands can be issued with `cmd("your command")`. |
230 | 957 ''' |
280 | 958 self.pystate['self'] = self |
274 | 959 arg = arg.parsed.raw[2:].strip() |
230 | 960 if arg.strip(): |
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961 interp = InteractiveInterpreter(locals=self.pystate) |
233 | 962 interp.runcode(arg) |
230 | 963 else: |
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964 interp = MyInteractiveConsole(locals=self.pystate) |
233 | 965 def quit(): |
234 | 966 raise EmbeddedConsoleExit |
236 | 967 def onecmd(arg): |
968 return self.onecmd(arg + '\n') | |
233 | 969 self.pystate['quit'] = quit |
970 self.pystate['exit'] = quit | |
234 | 971 try: |
240 | 972 cprt = 'Type "help", "copyright", "credits" or "license" for more information.' |
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973 keepstate = Statekeeper(sys, ('stdin','stdout')) |
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974 sys.stdout = self.stdout |
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975 sys.stdin = self.stdin |
240 | 976 interp.interact(banner= "Python %s on %s\n%s\n(%s)\n%s" % |
977 (sys.version, sys.platform, cprt, self.__class__.__name__, self.do_py.__doc__)) | |
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978 except EmbeddedConsoleExit: |
245 | 979 pass |
980 keepstate.restore() | |
233 | 981 |
230 | 982 def do_history(self, arg): |
983 """history [arg]: lists past commands issued | |
984 | |
985 no arg -> list all | |
986 arg is integer -> list one history item, by index | |
987 arg is string -> string search | |
988 arg is /enclosed in forward-slashes/ -> regular expression search | |
989 """ | |
990 if arg: | |
991 history = self.history.get(arg) | |
992 else: | |
993 history = self.history | |
994 for hi in history: | |
995 self.stdout.write(hi.pr()) | |
996 def last_matching(self, arg): | |
997 try: | |
998 if arg: | |
999 return self.history.get(arg)[-1] | |
1000 else: | |
1001 return self.history[-1] | |
1002 except IndexError: | |
1003 return None | |
1004 def do_list(self, arg): | |
1005 """list [arg]: lists last command issued | |
1006 | |
307 | 1007 no arg -> list most recent command |
230 | 1008 arg is integer -> list one history item, by index |
307 | 1009 a..b, a:b, a:, ..b -> list spans from a (or start) to b (or end) |
308 | 1010 arg is string -> list all commands matching string search |
230 | 1011 arg is /enclosed in forward-slashes/ -> regular expression search |
1012 """ | |
1013 try: | |
308 | 1014 history = self.history.span(arg or '-1') |
1015 except IndexError: | |
1016 history = self.history.search(arg) | |
1017 for hi in history: | |
1018 self.poutput(hi.pr()) | |
1019 | |
230 | 1020 do_hi = do_history |
1021 do_l = do_list | |
1022 do_li = do_list | |
1023 | |
1024 def do_ed(self, arg): | |
1025 """ed: edit most recent command in text editor | |
1026 ed [N]: edit numbered command from history | |
1027 ed [filename]: edit specified file name | |
1028 | |
1029 commands are run after editor is closed. | |
1030 "set edit (program-name)" or set EDITOR environment variable | |
1031 to control which editing program is used.""" | |
1032 if not self.editor: | |
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1033 self.perror("Please use 'set editor' to specify your text editing program of choice.") |
230 | 1034 return |
1035 filename = self.default_file_name | |
1036 if arg: | |
1037 try: | |
1038 buffer = self.last_matching(int(arg)) | |
1039 except ValueError: | |
1040 filename = arg | |
1041 buffer = '' | |
1042 else: | |
1043 buffer = self.history[-1] | |
1044 | |
1045 if buffer: | |
1046 f = open(os.path.expanduser(filename), 'w') | |
1047 f.write(buffer or '') | |
1048 f.close() | |
1049 | |
1050 os.system('%s %s' % (self.editor, filename)) | |
1051 self.do__load(filename) | |
1052 do_edit = do_ed | |
1053 | |
1054 saveparser = (pyparsing.Optional(pyparsing.Word(pyparsing.nums)^'*')("idx") + | |
1055 pyparsing.Optional(pyparsing.Word(legalChars + '/\\'))("fname") + | |
1056 pyparsing.stringEnd) | |
1057 def do_save(self, arg): | |
1058 """`save [N] [filename.ext]` | |
1059 Saves command from history to file. | |
1060 N => Number of command (from history), or `*`; | |
1061 most recent command if omitted""" | |
1062 | |
1063 try: | |
1064 args = self.saveparser.parseString(arg) | |
1065 except pyparsing.ParseException: | |
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1066 self.perror(self.do_save.__doc__) |
230 | 1067 return |
1068 fname = args.fname or self.default_file_name | |
1069 if args.idx == '*': | |
1070 saveme = '\n\n'.join(self.history[:]) | |
1071 elif args.idx: | |
1072 saveme = self.history[int(args.idx)-1] | |
1073 else: | |
1074 saveme = self.history[-1] | |
1075 try: | |
1076 f = open(os.path.expanduser(fname), 'w') | |
1077 f.write(saveme) | |
1078 f.close() | |
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1079 self.pfeedback('Saved to %s' % (fname)) |
230 | 1080 except Exception, e: |
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1081 self.perror('Error saving %s: %s' % (fname, str(e))) |
230 | 1082 |
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1083 def read_file_or_url(self, fname): |
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1084 # TODO: not working on localhost |
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1085 if isinstance(fname, file): |
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1086 result = open(fname, 'r') |
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1087 else: |
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1088 match = self.urlre.match(fname) |
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1089 if match: |
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1090 result = urllib.urlopen(match.group(1)) |
230 | 1091 else: |
244
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1092 fname = os.path.expanduser(fname) |
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1093 try: |
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1094 result = open(os.path.expanduser(fname), 'r') |
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1095 except IOError: |
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1096 result = open('%s.%s' % (os.path.expanduser(fname), |
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1097 self.defaultExtension), 'r') |
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1098 return result |
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1099 |
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1100 def do__relative_load(self, arg=None): |
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1101 ''' |
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1102 Runs commands in script at file or URL; if this is called from within an |
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1103 already-running script, the filename will be interpreted relative to the |
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1104 already-running script's directory.''' |
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1105 if arg: |
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1106 arg = arg.split(None, 1) |
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1107 targetname, args = arg[0], (arg[1:] or [''])[0] |
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1108 targetname = os.path.join(self.current_script_dir or '', targetname) |
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1109 self.do__load('%s %s' % (targetname, args)) |
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1110 |
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1111 urlre = re.compile('(https?://[-\\w\\./]+)') |
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1112 def do_load(self, arg=None): |
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1113 """Runs script of command(s) from a file or URL.""" |
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1114 if arg is None: |
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1115 targetname = self.default_file_name |
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1116 else: |
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1117 arg = arg.split(None, 1) |
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1118 targetname, args = arg[0], (arg[1:] or [''])[0].strip() |
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1119 try: |
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1120 target = self.read_file_or_url(targetname) |
230 | 1121 except IOError, e: |
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1122 self.perror('Problem accessing script from %s: \n%s' % (targetname, e)) |
230 | 1123 return |
244
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1124 keepstate = Statekeeper(self, ('stdin','use_rawinput','prompt', |
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1125 'continuation_prompt','current_script_dir')) |
230 | 1126 self.stdin = target |
1127 self.use_rawinput = False | |
1128 self.prompt = self.continuation_prompt = '' | |
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1129 self.current_script_dir = os.path.split(targetname)[0] |
230 | 1130 stop = self.cmdloop() |
1131 self.stdin.close() | |
1132 keepstate.restore() | |
1133 self.lastcmd = '' | |
1134 return (stop == self._STOP_AND_EXIT) and self._STOP_AND_EXIT | |
1135 do__load = do_load # avoid an unfortunate legacy use of do_load from sqlpython | |
1136 | |
1137 def do_run(self, arg): | |
1138 """run [arg]: re-runs an earlier command | |
1139 | |
1140 no arg -> run most recent command | |
1141 arg is integer -> run one history item, by index | |
1142 arg is string -> run most recent command by string search | |
1143 arg is /enclosed in forward-slashes/ -> run most recent by regex | |
1144 """ | |
1145 'run [N]: runs the SQL that was run N commands ago' | |
1146 runme = self.last_matching(arg) | |
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1147 self.pfeedback(runme) |
230 | 1148 if runme: |
1149 runme = self.precmd(runme) | |
1150 stop = self.onecmd(runme) | |
1151 stop = self.postcmd(stop, runme) | |
1152 do_r = do_run | |
1153 | |
1154 def fileimport(self, statement, source): | |
1155 try: | |
1156 f = open(os.path.expanduser(source)) | |
1157 except IOError: | |
1158 self.stdout.write("Couldn't read from file %s\n" % source) | |
1159 return '' | |
1160 data = f.read() | |
1161 f.close() | |
1162 return data | |
1163 | |
1164 class HistoryItem(str): | |
305 | 1165 listformat = '-------------------------[%d]\n%s\n' |
230 | 1166 def __init__(self, instr): |
1167 str.__init__(self) | |
1168 self.lowercase = self.lower() | |
1169 self.idx = None | |
1170 def pr(self): | |
307 | 1171 return self.listformat % (self.idx, str(self)) |
230 | 1172 |
1173 class History(list): | |
305 | 1174 '''A list of HistoryItems that knows how to respond to user requests. |
1175 >>> h = History([HistoryItem('first'), HistoryItem('second'), HistoryItem('third'), HistoryItem('fourth')]) | |
1176 >>> h.span('-2..') | |
1177 ['third', 'fourth'] | |
1178 >>> h.span('2..3') | |
1179 ['second', 'third'] | |
1180 >>> h.span('3') | |
1181 ['third'] | |
1182 >>> h.span(':') | |
1183 ['first', 'second', 'third', 'fourth'] | |
1184 >>> h.span('2..') | |
1185 ['second', 'third', 'fourth'] | |
1186 >>> h.span('-1') | |
1187 ['fourth'] | |
1188 >>> h.span('-2..-3') | |
306 | 1189 ['third', 'second'] |
308 | 1190 >>> h.search('o') |
1191 ['second', 'fourth'] | |
1192 >>> h.search('/IR/') | |
1193 ['first', 'third'] | |
305 | 1194 ''' |
1195 def zero_based_index(self, onebased): | |
1196 result = onebased | |
1197 if result > 0: | |
1198 result -= 1 | |
1199 return result | |
1200 def to_index(self, raw): | |
1201 if raw: | |
1202 result = self.zero_based_index(int(raw)) | |
1203 else: | |
1204 result = None | |
1205 return result | |
308 | 1206 def search(self, target): |
1207 target = target.strip() | |
1208 if target[0] == target[-1] == '/' and len(target) > 1: | |
1209 target = target[1:-1] | |
1210 else: | |
1211 target = re.escape(target) | |
1212 pattern = re.compile(target, re.IGNORECASE) | |
1213 return [s for s in self if pattern.search(s)] | |
305 | 1214 spanpattern = re.compile(r'^\s*(?P<start>\-?\d+)?\s*(?P<separator>:|(\.{2,}))?\s*(?P<end>\-?\d+)?\s*$') |
1215 def span(self, raw): | |
308 | 1216 if raw.lower() in ('*', '-', 'all'): |
1217 raw = ':' | |
305 | 1218 results = self.spanpattern.search(raw) |
307 | 1219 if not results: |
1220 raise IndexError | |
305 | 1221 if not results.group('separator'): |
1222 return [self[self.to_index(results.group('start'))]] | |
1223 start = self.to_index(results.group('start')) | |
1224 end = self.to_index(results.group('end')) | |
1225 reverse = False | |
1226 if end is not None: | |
1227 if end < start: | |
1228 (start, end) = (end, start) | |
1229 reverse = True | |
1230 end += 1 | |
1231 result = self[start:end] | |
1232 if reverse: | |
1233 result.reverse() | |
1234 return result | |
1235 | |
1236 rangePattern = re.compile(r'^\s*(?P<start>[\d]+)?\s*\-\s*(?P<end>[\d]+)?\s*$') | |
230 | 1237 def append(self, new): |
1238 new = HistoryItem(new) | |
1239 list.append(self, new) | |
1240 new.idx = len(self) | |
1241 def extend(self, new): | |
1242 for n in new: | |
1243 self.append(n) | |
305 | 1244 |
1245 | |
1246 def get(self, getme=None, fromEnd=False): | |
1247 if not getme: | |
1248 return self | |
230 | 1249 try: |
1250 getme = int(getme) | |
1251 if getme < 0: | |
1252 return self[:(-1 * getme)] | |
1253 else: | |
1254 return [self[getme-1]] | |
1255 except IndexError: | |
1256 return [] | |
305 | 1257 except ValueError: |
1258 rangeResult = self.rangePattern.search(getme) | |
1259 if rangeResult: | |
1260 start = rangeResult.group('start') or None | |
1261 end = rangeResult.group('start') or None | |
1262 if start: | |
1263 start = int(start) - 1 | |
1264 if end: | |
1265 end = int(end) | |
1266 return self[start:end] | |
1267 | |
230 | 1268 getme = getme.strip() |
305 | 1269 |
230 | 1270 if getme.startswith(r'/') and getme.endswith(r'/'): |
1271 finder = re.compile(getme[1:-1], re.DOTALL | re.MULTILINE | re.IGNORECASE) | |
1272 def isin(hi): | |
1273 return finder.search(hi) | |
1274 else: | |
1275 def isin(hi): | |
1276 return (getme.lower() in hi.lowercase) | |
1277 return [itm for itm in self if isin(itm)] | |
1278 | |
1279 class NotSettableError(Exception): | |
1280 pass | |
1281 | |
1282 def cast(current, new): | |
1283 """Tries to force a new value into the same type as the current.""" | |
1284 typ = type(current) | |
1285 if typ == bool: | |
1286 try: | |
1287 return bool(int(new)) | |
1288 except ValueError, TypeError: | |
1289 pass | |
1290 try: | |
1291 new = new.lower() | |
1292 except: | |
1293 pass | |
1294 if (new=='on') or (new[0] in ('y','t')): | |
1295 return True | |
1296 if (new=='off') or (new[0] in ('n','f')): | |
1297 return False | |
1298 else: | |
1299 try: | |
1300 return typ(new) | |
1301 except: | |
1302 pass | |
1303 print "Problem setting parameter (now %s) to %s; incorrect type?" % (current, new) | |
1304 return current | |
1305 | |
1306 class Statekeeper(object): | |
1307 def __init__(self, obj, attribs): | |
1308 self.obj = obj | |
1309 self.attribs = attribs | |
282 | 1310 if self.obj: |
1311 self.save() | |
230 | 1312 def save(self): |
1313 for attrib in self.attribs: | |
1314 setattr(self, attrib, getattr(self.obj, attrib)) | |
1315 def restore(self): | |
282 | 1316 if self.obj: |
1317 for attrib in self.attribs: | |
1318 setattr(self.obj, attrib, getattr(self, attrib)) | |
230 | 1319 |
1320 class Borg(object): | |
1321 '''All instances of any Borg subclass will share state. | |
1322 from Python Cookbook, 2nd Ed., recipe 6.16''' | |
1323 _shared_state = {} | |
1324 def __new__(cls, *a, **k): | |
1325 obj = object.__new__(cls, *a, **k) | |
1326 obj.__dict__ = cls._shared_state | |
1327 return obj | |
1328 | |
1329 class OutputTrap(Borg): | |
1330 '''Instantiate an OutputTrap to divert/capture ALL stdout output. For use in unit testing. | |
1331 Call `tearDown()` to return to normal output.''' | |
1332 def __init__(self): | |
1333 self.old_stdout = sys.stdout | |
1334 self.trap = tempfile.TemporaryFile() | |
1335 sys.stdout = self.trap | |
1336 def read(self): | |
1337 self.trap.seek(0) | |
1338 result = self.trap.read() | |
1339 self.trap.truncate(0) | |
1340 return result.strip('\x00') | |
1341 def tearDown(self): | |
1342 sys.stdout = self.old_stdout | |
1343 | |
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1344 |
230 | 1345 class Cmd2TestCase(unittest.TestCase): |
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1346 '''Subclass this, setting CmdApp, to make a unittest.TestCase class |
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1347 that will execute the commands in a transcript file and expect the results shown. |
230 | 1348 See example.py''' |
1349 CmdApp = None | |
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1350 def fetchTranscripts(self): |
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1351 self.transcripts = {} |
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1352 for fileset in self.CmdApp.testfiles: |
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1353 for fname in glob.glob(fileset): |
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1354 tfile = open(fname) |
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1355 self.transcripts[fname] = iter(tfile.readlines()) |
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1356 tfile.close() |
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1357 if not len(self.transcripts): |
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1358 raise StandardError, "No test files found - nothing to test." |
230 | 1359 def setUp(self): |
1360 if self.CmdApp: | |
1361 self.outputTrap = OutputTrap() | |
1362 self.cmdapp = self.CmdApp() | |
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1363 self.fetchTranscripts() |
230 | 1364 def testall(self): |
1365 if self.CmdApp: | |
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1366 its = sorted(self.transcripts.items()) |
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1367 for (fname, transcript) in its: |
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1368 self._test_transcript(fname, transcript) |
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1369 regexPattern = pyparsing.QuotedString(quoteChar=r'/', escChar='\\', multiline=True, unquoteResults=True) |
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1370 regexPattern.ignore(pyparsing.cStyleComment) |
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1371 notRegexPattern = pyparsing.Word(pyparsing.printables) |
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1372 notRegexPattern.setParseAction(lambda t: re.escape(t[0])) |
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1373 expectationParser = regexPattern | notRegexPattern |
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1374 endStrippingRegex = re.compile(r'[ \t]*\n') |
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1375 def _test_transcript(self, fname, transcript): |
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1376 lineNum = 0 |
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1377 try: |
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1378 line = transcript.next() |
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1379 while True: |
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1380 while not line.startswith(self.cmdapp.prompt): |
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1381 line = transcript.next() |
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1382 command = [line[len(self.cmdapp.prompt):]] |
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1383 line = transcript.next() |
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1384 while line.startswith(self.cmdapp.continuation_prompt): |
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1385 command.append(line[len(self.cmdapp.continuation_prompt):]) |
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1386 line = transcript.next() |
305 | 1387 command = ''.join(command).strip() |
1388 self.cmdapp.onecmd(command) | |
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1389 result = self.outputTrap.read().strip() |
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1390 if line.startswith(self.cmdapp.prompt): |
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1391 message = '\nFile %s, line %d\nCommand was:\n%s\nExpected: (nothing)\nGot:\n%s\n'%\ |
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1392 (fname, lineNum, command, result) |
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1393 self.assert_(not(result.strip()), message) |
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1394 continue |
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1395 expected = [] |
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1396 while not line.startswith(self.cmdapp.prompt): |
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1397 expected.append(line) |
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1398 line = transcript.next() |
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1399 expected = ''.join(expected).strip() |
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1400 message = '\nFile %s, line %d\nCommand was:\n%s\nExpected:\n%s\nGot:\n%s\n'%\ |
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1401 (fname, lineNum, command, expected, result) |
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1402 expected = self.expectationParser.transformString(expected) |
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1403 expected = self.endStrippingRegex.sub('\s*\n', expected) |
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1404 self.assert_(re.match(expected, result, re.MULTILINE | re.DOTALL), message) |
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1405 except StopIteration: |
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1406 pass |
230 | 1407 def tearDown(self): |
1408 if self.CmdApp: | |
1409 self.outputTrap.tearDown() | |
1410 | |
1411 if __name__ == '__main__': | |
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1412 doctest.testmod(optionflags = doctest.NORMALIZE_WHITESPACE) |
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1413 |
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1414 ''' |
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1415 To make your application transcript-testable, add text like this to your .py file |
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1416 (replacing CmdLineApp with your own application class's name). Then, a cut-and-pasted |
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1417 version of a successful session with your application, saved as a text file, can serve |
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1418 as a test for future |
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1419 |
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1420 Invoke the test later with `python myapplication.py --test mytranscripttestfile.ext` |
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1421 Wildcards can be used to test against multiple transcript files. |
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1422 |
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1423 |
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1424 class TestMyAppCase(Cmd2TestCase): |
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1425 CmdApp = CmdLineApp |
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1426 parser = optparse.OptionParser() |
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1427 parser.add_option('-t', '--test', dest='test', action="store_true", |
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1428 help='Test against transcript(s) in FILE (wildcards OK)') |
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1429 (callopts, callargs) = parser.parse_args() |
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1430 if callopts.test: |
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1431 CmdLineApp.testfiles = callargs |
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1432 sys.argv = [sys.argv[0]] # the --test argument upsets unittest.main() |
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1433 unittest.main() |
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1434 else: |
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1435 CmdLineApp().cmdloop() |
286 | 1436 ''' |