Mercurial > python-cmd2
annotate cmd2.py @ 133:31674148b13c
just beginning to make comments work
author | catherine@Elli.myhome.westell.com |
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date | Sat, 08 Nov 2008 17:10:20 -0500 |
parents | 197a312f2656 |
children | c28ae4f75c15 |
rev | line source |
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1 """Variant on standard library's cmd with extra features. |
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2 |
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3 To use, simply import cmd2.Cmd instead of cmd.Cmd; use precisely as though you |
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4 were using the standard library's cmd, while enjoying the extra features. |
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5 |
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6 Searchable command history (commands: "hi", "li", "run") |
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7 Load commands from file, save to file, edit commands in file |
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8 Multi-line commands |
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9 Case-insensitive commands |
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10 Special-character shortcut commands (beyond cmd's "@" and "!") |
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11 Settable environment parameters |
13 | 12 Parsing commands with `optparse` options (flags) |
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13 Redirection to file with >, >>; input from file with < |
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14 Easy transcript-based testing of applications (see example/example.py) |
13 | 15 |
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16 Note that redirection with > and | will only work if `self.stdout.write()` |
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17 is used in place of `print`. The standard library's `cmd` module is |
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18 written to use `self.stdout.write()`, |
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19 |
14 | 20 - Catherine Devlin, Jan 03 2008 - catherinedevlin.blogspot.com |
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21 |
126 | 22 mercurial repository at http://www.assembla.com/wiki/show/python-cmd2 |
14 | 23 CHANGES: |
24 As of 0.3.0, options should be specified as `optparse` options. See README.txt. | |
25 flagReader.py options are still supported for backward compatibility | |
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26 """ |
104 | 27 import cmd, re, os, sys, optparse, subprocess, tempfile, pyparsing, doctest, unittest |
10 | 28 from optparse import make_option |
126 | 29 __version__ = '0.4.2' |
10 | 30 |
11 | 31 class OptionParser(optparse.OptionParser): |
32 def exit(self, status=0, msg=None): | |
38 | 33 self.values._exit = True |
11 | 34 if msg: |
15 | 35 print msg |
11 | 36 |
37 def error(self, msg): | |
38 """error(msg : string) | |
39 | |
40 Print a usage message incorporating 'msg' to stderr and exit. | |
41 If you override this in a subclass, it should not return -- it | |
42 should either exit or raise an exception. | |
43 """ | |
15 | 44 raise |
11 | 45 |
10 | 46 def options(option_list): |
47 def option_setup(func): | |
11 | 48 optionParser = OptionParser() |
10 | 49 for opt in option_list: |
50 optionParser.add_option(opt) | |
12 | 51 optionParser.set_usage("%s [options] arg" % func.__name__.strip('do_')) |
10 | 52 def newFunc(instance, arg): |
53 try: | |
20 | 54 opts, arg = optionParser.parse_args(arg.split()) |
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55 arg = ' '.join(arg) |
20 | 56 except (optparse.OptionValueError, optparse.BadOptionError, |
57 optparse.OptionError, optparse.AmbiguousOptionError, | |
58 optparse.OptionConflictError), e: | |
10 | 59 print e |
60 optionParser.print_help() | |
38 | 61 return |
62 if hasattr(opts, '_exit'): | |
63 return None | |
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64 result = func(instance, arg, opts) |
10 | 65 return result |
66 newFunc.__doc__ = '%s\n%s' % (func.__doc__, optionParser.format_help()) | |
67 return newFunc | |
68 return option_setup | |
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69 |
27 | 70 class PasteBufferError(EnvironmentError): |
71 if sys.platform[:3] == 'win': | |
72 errmsg = """Redirecting to or from paste buffer requires pywin32 | |
73 to be installed on operating system. | |
74 Download from http://sourceforge.net/projects/pywin32/""" | |
75 else: | |
76 errmsg = """Redirecting to or from paste buffer requires xclip | |
77 to be installed on operating system. | |
78 On Debian/Ubuntu, 'sudo apt-get install xclip' will install it.""" | |
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79 def __init__(self): |
27 | 80 Exception.__init__(self, self.errmsg) |
81 | |
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82 '''check here if functions exist; otherwise, stub out''' |
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83 pastebufferr = """Redirecting to or from paste buffer requires %s |
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84 to be installed on operating system. |
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85 %s""" |
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86 if subprocess.mswindows: |
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87 try: |
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88 import win32clipboard |
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89 def getPasteBuffer(): |
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90 win32clipboard.OpenClipboard(0) |
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91 try: |
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92 result = win32clipboard.GetClipboardData() |
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93 except TypeError: |
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94 result = '' #non-text |
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95 win32clipboard.CloseClipboard() |
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96 return result |
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97 def writeToPasteBuffer(txt): |
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98 win32clipboard.OpenClipboard(0) |
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99 win32clipboard.EmptyClipboard() |
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100 win32clipboard.SetClipboardText(txt) |
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101 win32clipboard.CloseClipboard() |
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102 except ImportError: |
106 | 103 def getPasteBuffer(*args): |
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104 raise OSError, pastebufferr % ('pywin32', 'Download from http://sourceforge.net/projects/pywin32/') |
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105 setPasteBuffer = getPasteBuffer |
27 | 106 else: |
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107 can_clip = False |
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108 try: |
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109 subprocess.check_call('xclip -o -sel clip', shell=True, stdout=subprocess.PIPE, stdin=subprocess.PIPE) |
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110 can_clip = True |
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111 except AttributeError: # check_call not defined, Python < 2.5 |
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112 teststring = 'Testing for presence of xclip.' |
31 | 113 xclipproc = subprocess.Popen('xclip -sel clip', shell=True, stdout=subprocess.PIPE, stdin=subprocess.PIPE) |
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114 xclipproc.stdin.write(teststring) |
31 | 115 xclipproc.stdin.close() |
116 xclipproc = subprocess.Popen('xclip -o -sel clip', shell=True, stdout=subprocess.PIPE, stdin=subprocess.PIPE) | |
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117 if xclipproc.stdout.read() == teststring: |
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118 can_clip = True |
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119 except (subprocess.CalledProcessError, OSError, IOError): |
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120 pass |
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121 if can_clip: |
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122 def getPasteBuffer(): |
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123 xclipproc = subprocess.Popen('xclip -o -sel clip', shell=True, stdout=subprocess.PIPE, stdin=subprocess.PIPE) |
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124 return xclipproc.stdout.read() |
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125 def writeToPasteBuffer(txt): |
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126 xclipproc = subprocess.Popen('xclip -sel clip', shell=True, stdout=subprocess.PIPE, stdin=subprocess.PIPE) |
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127 xclipproc.stdin.write(txt) |
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128 xclipproc.stdin.close() |
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129 # but we want it in both the "primary" and "mouse" clipboards |
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130 xclipproc = subprocess.Popen('xclip', shell=True, stdout=subprocess.PIPE, stdin=subprocess.PIPE) |
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131 xclipproc.stdin.write(txt) |
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132 xclipproc.stdin.close() |
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133 else: |
106 | 134 def getPasteBuffer(*args): |
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135 raise OSError, pastebufferr % ('xclip', 'On Debian/Ubuntu, install with "sudo apt-get install xclip"') |
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136 setPasteBuffer = getPasteBuffer |
106 | 137 writeToPasteBuffer = getPasteBuffer |
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138 |
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139 pyparsing.ParserElement.setDefaultWhitespaceChars(' \t') |
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140 def parseSearchResults(pattern, s): |
81 | 141 generator = pattern.scanString(s) |
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142 try: |
81 | 143 result, start, stop = generator.next() |
144 result['before'], result['after'] = s[:start], s[stop:] | |
82 | 145 result['upToIncluding'] = s[:stop] |
81 | 146 except StopIteration: |
147 result = pyparsing.ParseResults('') | |
148 result['before'] = s | |
149 return result | |
79
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150 |
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151 class Cmd(cmd.Cmd): |
103 | 152 echo = False |
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153 caseInsensitive = True |
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154 multilineCommands = ['_multiline_comment'] |
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155 continuationPrompt = '> ' |
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156 shortcuts = {'?': 'help', '!': 'shell', '@': 'load', '/*': '_multiline_comment', '#': '_comment'} |
106 | 157 excludeFromHistory = '''run r list l history hi ed edit li eof'''.split() |
158 noSpecialParse = 'set ed edit exit'.split() | |
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159 defaultExtension = 'txt' |
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160 defaultFileName = 'command.txt' |
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161 editor = os.environ.get('EDITOR') |
42 | 162 _STOP_AND_EXIT = 2 |
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163 if not editor: |
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164 if sys.platform[:3] == 'win': |
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165 editor = 'notepad' |
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166 else: |
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167 for editor in ['gedit', 'kate', 'vim', 'emacs', 'nano', 'pico']: |
47 | 168 if not os.system('which %s' % (editor)): |
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169 break |
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170 |
103 | 171 settable = ['prompt', 'continuationPrompt', 'defaultFileName', 'editor', 'caseInsensitive', 'echo'] |
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172 def do_cmdenvironment(self, args): |
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173 self.stdout.write(""" |
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174 Commands are %(casesensitive)scase-sensitive. |
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175 Commands may be terminated with: %(terminators)s |
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176 Settable parameters: %(settable)s |
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177 """ % |
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178 { 'casesensitive': ('not ' and self.caseInsensitive) or '', |
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179 'terminators': self.terminatorPattern, |
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180 'settable': ' '.join(self.settable) |
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181 }) |
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182 |
10 | 183 def do_help(self, arg): |
184 cmd.Cmd.do_help(self, arg) | |
185 try: | |
186 fn = getattr(self, 'do_' + arg) | |
187 if fn and fn.optionParser: | |
188 fn.optionParser.print_help(file=self.stdout) | |
189 except AttributeError: | |
190 pass | |
191 | |
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192 def __init__(self, *args, **kwargs): |
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193 cmd.Cmd.__init__(self, *args, **kwargs) |
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194 self.history = History() |
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195 |
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196 def do__comment(self, arg): |
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197 pass |
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198 def do__multiline_comment(self, arg): |
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199 pass |
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200 |
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201 def do_shortcuts(self, args): |
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202 """Lists single-key shortcuts available.""" |
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203 result = "\n".join('%s: %s' % (sc[0], sc[1]) for sc in self.shortcuts.items()) |
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204 self.stdout.write("Single-key shortcuts for other commands:\n%s\n" % (result)) |
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205 |
133
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206 specialTerminators = {'/*': pyparsing.Literal('*/')('terminator') } |
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207 terminatorPattern = ((pyparsing.Literal(';') ^ pyparsing.Literal('\n\n')) |
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208 ^ (pyparsing.Literal('\nEOF') + pyparsing.lineEnd))('terminator') |
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209 argSeparatorPattern = pyparsing.Word(pyparsing.printables)('command') \ |
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210 + pyparsing.SkipTo(pyparsing.StringEnd())('args') |
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211 filenamePattern = pyparsing.Word(pyparsing.alphanums + '#$-_~{},.!:\\/') |
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212 integerPattern = pyparsing.Word(pyparsing.nums).setParseAction( lambda s,l,t: [ int(t[0]) ] ) |
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213 pipePattern = pyparsing.Literal('|')('pipe') + pyparsing.restOfLine('pipeTo') |
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214 redirectOutPattern = (pyparsing.Literal('>>') ^ '>')('output') \ |
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215 + pyparsing.Optional(filenamePattern)('outputTo') |
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216 redirectInPattern = pyparsing.Literal('<')('input') \ |
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217 + pyparsing.Optional(filenamePattern)('inputFrom') |
81 | 218 punctuationPattern = pipePattern ^ redirectInPattern ^ redirectOutPattern |
219 for p in (terminatorPattern, pipePattern, redirectInPattern, redirectOutPattern, punctuationPattern): | |
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220 p.ignore(pyparsing.sglQuotedString) |
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221 p.ignore(pyparsing.dblQuotedString) |
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222 |
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223 def parsed(self, s): |
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224 ''' |
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225 >>> c = Cmd() |
82 | 226 >>> r = c.parsed('quotes "are > ignored" < inp.txt') |
227 >>> r.statement, r.input, r.inputFrom, r.output, r.outputFrom | |
228 ('quotes "are > ignored" ', '<', 'inp.txt', '', '') | |
229 >>> r = c.parsed('very complex; < from.txt >> to.txt etc.') | |
230 >>> r.statement, r.terminator, r.input, r.inputFrom, r.output, r.outputTo | |
231 ('very complex;', ';', '<', 'from.txt', '>>', 'to.txt') | |
232 >>> c.parsed('nothing to parse').statement | |
233 'nothing to parse' | |
234 >>> r = c.parsed('ignore > within a terminated statement; > out.txt') | |
235 >>> r.statement, r.terminator, r.input, r.inputFrom, r.output, r.outputTo | |
236 ('ignore > within a terminated statement;', ';', '', '', '>', 'out.txt') | |
237 >>> r = c.parsed('send it to | sort | wc') | |
238 >>> r.statement, r.pipe, r.pipeTo | |
239 ('send it to ', '|', ' sort | wc') | |
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240 >>> r = c.parsed('got from < thisfile.txt plus blah blah') |
82 | 241 >>> r.statement, r.input, r.inputFrom |
242 ('got from ', '<', 'thisfile.txt') | |
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243 ''' |
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244 if isinstance(s, pyparsing.ParseResults): |
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245 return s |
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246 result = (pyparsing.SkipTo(pyparsing.StringEnd()))('fullStatement').parseString(s) |
106 | 247 command = s.split()[0] |
248 if self.caseInsensitive: | |
249 command = command.lower() | |
250 '''if command in self.noSpecialParse: | |
251 result['statement'] = result['upToIncluding'] = result['unterminated'] = result.fullStatement | |
252 result['command'] = command | |
253 result['args'] = ' '.join(result.fullStatement.split()[1:]) | |
254 return result''' | |
133
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255 for (shortcut, fullCommand) in self.shortcuts.items(): |
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256 if s.startswith(shortcut): |
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257 s = s.replace(shortcut, fullCommand + ' ', 1) |
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258 break |
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259 result['statement'] = s |
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260 result['parseable'] = s |
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261 terminator = self.specialTerminators.get(command) or self.terminatorPattern |
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262 result += parseSearchResults(terminator, s) |
81 | 263 if result.terminator: |
82 | 264 result['statement'] = result.upToIncluding |
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265 result['unterminated'] = result.before |
82 | 266 result['parseable'] = result.after |
81 | 267 else: |
82 | 268 result += parseSearchResults(self.punctuationPattern, s) |
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269 result['statement'] = result['unterminated'] = result.before |
81 | 270 result += parseSearchResults(self.pipePattern, result.parseable) |
271 result += parseSearchResults(self.redirectInPattern, result.parseable) | |
272 result += parseSearchResults(self.redirectOutPattern, result.parseable) | |
273 result += parseSearchResults(self.argSeparatorPattern, result.statement) | |
274 if self.caseInsensitive: | |
106 | 275 result['command'] = result.command.lower() |
81 | 276 result['statement'] = '%s %s' % (result.command, result.args) |
277 return result | |
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278 |
3 | 279 def extractCommand(self, statement): |
280 try: | |
281 (command, args) = statement.split(None,1) | |
282 except ValueError: | |
283 (command, args) = statement, '' | |
284 if self.caseInsensitive: | |
285 command = command.lower() | |
286 return command, args | |
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287 |
44 | 288 def onecmd(self, line, assumeComplete=False): |
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289 """Interpret the argument as though it had been typed in response |
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290 to the prompt. |
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291 |
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292 This may be overridden, but should not normally need to be; |
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293 see the precmd() and postcmd() methods for useful execution hooks. |
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294 The return value is a flag indicating whether interpretation of |
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295 commands by the interpreter should stop. |
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296 |
3 | 297 """ |
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298 line = line.strip() |
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299 if not line: |
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300 return |
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301 statement = self.parsed(line) |
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302 while (statement.command in self.multilineCommands) and not \ |
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303 (statement.terminator or assumeComplete): |
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304 statement = self.parsed('%s\n%s' % (statement.fullStatement, |
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305 self.pseudo_raw_input(self.continuationPrompt))) |
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306 |
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307 statekeeper = None |
25 | 308 stop = 0 |
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309 if statement.input: |
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310 if statement.inputFrom: |
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311 try: |
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312 newinput = open(statement.inputFrom, 'r').read() |
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313 except OSError, e: |
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314 print e |
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315 return 0 |
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316 else: |
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317 newinput = getPasteBuffer() |
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318 start, end = self.redirectInPattern.scanString(statement.fullStatement).next()[1:] |
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319 return self.onecmd('%s%s%s' % (statement.fullStatement[:start], |
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320 newinput, statement.fullStatement[end:])) |
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321 if statement.pipe and statement.pipeTo: |
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322 redirect = subprocess.Popen(statement.pipeTo, shell=True, stdout=subprocess.PIPE, stdin=subprocess.PIPE) |
51 | 323 statekeeper = Statekeeper(self, ('stdout',)) |
47 | 324 self.stdout = redirect.stdin |
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325 elif statement.output: |
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326 statekeeper = Statekeeper(self, ('stdout',)) |
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327 if statement.outputTo: |
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328 mode = 'w' |
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329 if statement.output == '>>': |
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330 mode = 'a' |
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331 try: |
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332 self.stdout = open(statement.outputTo, mode) |
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333 except OSError, e: |
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334 print e |
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335 return 0 |
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336 else: |
51 | 337 statekeeper = Statekeeper(self, ('stdout',)) |
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338 self.stdout = tempfile.TemporaryFile() |
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339 if statement.output == '>>': |
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340 self.stdout.write(getPasteBuffer()) |
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341 try: |
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342 stop = cmd.Cmd.onecmd(self, statement.statement) |
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343 except Exception, e: |
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344 print e |
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345 try: |
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346 if statement.command not in self.excludeFromHistory: |
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347 self.history.append(statement.fullStatement) |
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348 finally: |
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349 if statekeeper: |
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350 if statement.output and not statement.outputTo: |
27 | 351 self.stdout.seek(0) |
352 writeToPasteBuffer(self.stdout.read()) | |
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353 elif statement.pipe: |
52
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354 for result in redirect.communicate(): |
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355 statekeeper.stdout.write(result or '') |
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356 self.stdout.close() |
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357 statekeeper.restore() |
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358 |
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359 return stop |
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360 |
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361 def pseudo_raw_input(self, prompt): |
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362 """copied from cmd's cmdloop; like raw_input, but accounts for changed stdin, stdout""" |
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363 |
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changeset
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364 if self.use_rawinput: |
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changeset
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365 try: |
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366 line = raw_input(prompt) |
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changeset
|
367 except EOFError: |
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368 line = 'EOF' |
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changeset
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369 else: |
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370 self.stdout.write(prompt) |
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changeset
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371 self.stdout.flush() |
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372 line = self.stdin.readline() |
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changeset
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373 if not len(line): |
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374 line = 'EOF' |
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changeset
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375 else: |
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changeset
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376 if line[-1] == '\n': # this was always true in Cmd |
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changeset
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377 line = line[:-1] |
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changeset
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378 return line |
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changeset
|
379 |
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380 def cmdloop(self, intro=None): |
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381 """Repeatedly issue a prompt, accept input, parse an initial prefix |
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382 off the received input, and dispatch to action methods, passing them |
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383 the remainder of the line as argument. |
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changeset
|
384 """ |
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changeset
|
385 |
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386 # An almost perfect copy from Cmd; however, the pseudo_raw_input portion |
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387 # has been split out so that it can be called separately |
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|
388 |
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389 self.preloop() |
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390 if self.use_rawinput and self.completekey: |
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changeset
|
391 try: |
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|
392 import readline |
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393 self.old_completer = readline.get_completer() |
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394 readline.set_completer(self.complete) |
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395 readline.parse_and_bind(self.completekey+": complete") |
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396 except ImportError: |
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changeset
|
397 pass |
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changeset
|
398 try: |
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changeset
|
399 if intro is not None: |
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changeset
|
400 self.intro = intro |
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changeset
|
401 if self.intro: |
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changeset
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402 self.stdout.write(str(self.intro)+"\n") |
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changeset
|
403 stop = None |
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changeset
|
404 while not stop: |
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changeset
|
405 if self.cmdqueue: |
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changeset
|
406 line = self.cmdqueue.pop(0) |
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changeset
|
407 else: |
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changeset
|
408 line = self.pseudo_raw_input(self.prompt) |
103 | 409 if (self.echo) and (isinstance(self.stdin, file)): |
410 self.stdout.write(line + '\n') | |
0
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changeset
|
411 line = self.precmd(line) |
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parents:
diff
changeset
|
412 stop = self.onecmd(line) |
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parents:
diff
changeset
|
413 stop = self.postcmd(stop, line) |
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parents:
diff
changeset
|
414 self.postloop() |
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parents:
diff
changeset
|
415 finally: |
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diff
changeset
|
416 if self.use_rawinput and self.completekey: |
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parents:
diff
changeset
|
417 try: |
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parents:
diff
changeset
|
418 import readline |
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diff
changeset
|
419 readline.set_completer(self.old_completer) |
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parents:
diff
changeset
|
420 except ImportError: |
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parents:
diff
changeset
|
421 pass |
43 | 422 return stop |
0
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parents:
diff
changeset
|
423 |
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parents:
diff
changeset
|
424 def do_EOF(self, arg): |
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parents:
diff
changeset
|
425 return True |
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parents:
diff
changeset
|
426 do_eof = do_EOF |
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parents:
diff
changeset
|
427 |
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parents:
diff
changeset
|
428 def showParam(self, param): |
133
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diff
changeset
|
429 param = param.strip().lower() |
0
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changeset
|
430 if param in self.settable: |
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changeset
|
431 val = getattr(self, param) |
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changeset
|
432 self.stdout.write('%s: %s\n' % (param, str(getattr(self, param)))) |
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parents:
diff
changeset
|
433 |
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parents:
diff
changeset
|
434 def do_quit(self, arg): |
43 | 435 return self._STOP_AND_EXIT |
0
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parents:
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changeset
|
436 do_exit = do_quit |
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parents:
diff
changeset
|
437 do_q = do_quit |
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parents:
diff
changeset
|
438 |
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parents:
diff
changeset
|
439 def do_show(self, arg): |
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parents:
diff
changeset
|
440 'Shows value of a parameter' |
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parents:
diff
changeset
|
441 if arg.strip(): |
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parents:
diff
changeset
|
442 self.showParam(arg) |
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parents:
diff
changeset
|
443 else: |
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parents:
diff
changeset
|
444 for param in self.settable: |
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parents:
diff
changeset
|
445 self.showParam(param) |
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parents:
diff
changeset
|
446 |
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parents:
diff
changeset
|
447 def do_set(self, arg): |
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parents:
diff
changeset
|
448 'Sets a parameter' |
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parents:
diff
changeset
|
449 try: |
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changeset
|
450 paramName, val = arg.split(None, 1) |
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diff
changeset
|
451 paramName = paramName.strip().lower() |
0
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changeset
|
452 if paramName not in self.settable: |
106 | 453 raise NotSettableError |
0
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parents:
diff
changeset
|
454 currentVal = getattr(self, paramName) |
106 | 455 if (val[0] == val[-1]) and val[0] in ("'", '"'): |
456 val = val[1:-1] | |
457 else: | |
458 val = cast(currentVal, self.parsed(val).unterminated) | |
0
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parents:
diff
changeset
|
459 setattr(self, paramName, val) |
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parents:
diff
changeset
|
460 self.stdout.write('%s - was: %s\nnow: %s\n' % (paramName, currentVal, val)) |
febfdc79550b
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parents:
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changeset
|
461 except (ValueError, AttributeError, NotSettableError), e: |
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parents:
diff
changeset
|
462 self.do_show(arg) |
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parents:
diff
changeset
|
463 |
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parents:
diff
changeset
|
464 def do_shell(self, arg): |
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parents:
diff
changeset
|
465 'execute a command as if at the OS prompt.' |
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parents:
diff
changeset
|
466 os.system(arg) |
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parents:
diff
changeset
|
467 |
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parents:
diff
changeset
|
468 def do_history(self, arg): |
febfdc79550b
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parents:
diff
changeset
|
469 """history [arg]: lists past commands issued |
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parents:
diff
changeset
|
470 |
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parents:
diff
changeset
|
471 no arg -> list all |
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parents:
diff
changeset
|
472 arg is integer -> list one history item, by index |
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parents:
diff
changeset
|
473 arg is string -> string search |
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parents:
diff
changeset
|
474 arg is /enclosed in forward-slashes/ -> regular expression search |
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parents:
diff
changeset
|
475 """ |
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parents:
diff
changeset
|
476 if arg: |
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parents:
diff
changeset
|
477 history = self.history.get(arg) |
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parents:
diff
changeset
|
478 else: |
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parents:
diff
changeset
|
479 history = self.history |
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parents:
diff
changeset
|
480 for hi in history: |
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parents:
diff
changeset
|
481 self.stdout.write(hi.pr()) |
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parents:
diff
changeset
|
482 def last_matching(self, arg): |
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parents:
diff
changeset
|
483 try: |
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parents:
diff
changeset
|
484 if arg: |
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parents:
diff
changeset
|
485 return self.history.get(arg)[-1] |
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parents:
diff
changeset
|
486 else: |
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parents:
diff
changeset
|
487 return self.history[-1] |
133
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diff
changeset
|
488 except IndexError: |
0
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parents:
diff
changeset
|
489 return None |
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parents:
diff
changeset
|
490 def do_list(self, arg): |
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parents:
diff
changeset
|
491 """list [arg]: lists last command issued |
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parents:
diff
changeset
|
492 |
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parents:
diff
changeset
|
493 no arg -> list absolute last |
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parents:
diff
changeset
|
494 arg is integer -> list one history item, by index |
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parents:
diff
changeset
|
495 - arg, arg - (integer) -> list up to or after #arg |
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parents:
diff
changeset
|
496 arg is string -> list last command matching string search |
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parents:
diff
changeset
|
497 arg is /enclosed in forward-slashes/ -> regular expression search |
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parents:
diff
changeset
|
498 """ |
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parents:
diff
changeset
|
499 try: |
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parents:
diff
changeset
|
500 self.stdout.write(self.last_matching(arg).pr()) |
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parents:
diff
changeset
|
501 except: |
febfdc79550b
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parents:
diff
changeset
|
502 pass |
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parents:
diff
changeset
|
503 do_hi = do_history |
febfdc79550b
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parents:
diff
changeset
|
504 do_l = do_list |
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parents:
diff
changeset
|
505 do_li = do_list |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
506 |
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parents:
diff
changeset
|
507 def do_ed(self, arg): |
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parents:
diff
changeset
|
508 """ed: edit most recent command in text editor |
febfdc79550b
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parents:
diff
changeset
|
509 ed [N]: edit numbered command from history |
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parents:
diff
changeset
|
510 ed [filename]: edit specified file name |
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parents:
diff
changeset
|
511 |
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parents:
diff
changeset
|
512 commands are run after editor is closed. |
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parents:
diff
changeset
|
513 "set edit (program-name)" or set EDITOR environment variable |
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parents:
diff
changeset
|
514 to control which editing program is used.""" |
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parents:
diff
changeset
|
515 if not self.editor: |
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parents:
diff
changeset
|
516 print "please use 'set editor' to specify your text editing program of choice." |
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catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
517 return |
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parents:
diff
changeset
|
518 filename = self.defaultFileName |
133
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parents:
126
diff
changeset
|
519 if arg: |
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parents:
126
diff
changeset
|
520 try: |
31674148b13c
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parents:
126
diff
changeset
|
521 buffer = self.last_matching(int(arg)) |
31674148b13c
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parents:
126
diff
changeset
|
522 except ValueError: |
0
febfdc79550b
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parents:
diff
changeset
|
523 filename = arg |
133
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parents:
126
diff
changeset
|
524 buffer = '' |
31674148b13c
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parents:
126
diff
changeset
|
525 else: |
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parents:
126
diff
changeset
|
526 buffer = self.history[-1] |
0
febfdc79550b
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parents:
diff
changeset
|
527 |
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catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
528 if buffer: |
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parents:
diff
changeset
|
529 f = open(filename, 'w') |
febfdc79550b
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parents:
diff
changeset
|
530 f.write(buffer or '') |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
531 f.close() |
febfdc79550b
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catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
532 |
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catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
533 os.system('%s %s' % (self.editor, filename)) |
48 | 534 self.do__load(filename) |
0
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parents:
diff
changeset
|
535 do_edit = do_ed |
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parents:
diff
changeset
|
536 |
91 | 537 saveparser = (pyparsing.Optional(pyparsing.Word(pyparsing.nums)^'*')("idx") + |
538 pyparsing.Optional(pyparsing.Word(pyparsing.printables))("fname") + | |
539 pyparsing.stringEnd) | |
540 def do_save(self, arg): | |
541 """`save [N] [filename.ext]` | |
542 Saves command from history to file. | |
543 N => Number of command (from history), or `*`; | |
544 most recent command if omitted""" | |
545 | |
546 try: | |
547 args = self.saveparser.parseString(arg) | |
548 except pyparsing.ParseException: | |
549 print self.do_save.__doc__ | |
550 return | |
551 fname = args.fname or self.defaultFileName | |
552 if args.idx == '*': | |
553 saveme = '\n\n'.join(self.history[:]) | |
554 elif args.idx: | |
555 saveme = self.history[int(args.idx)-1] | |
556 else: | |
557 saveme = self.history[-1] | |
0
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parents:
diff
changeset
|
558 try: |
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parents:
diff
changeset
|
559 f = open(fname, 'w') |
91 | 560 f.write(saveme) |
0
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
561 f.close() |
91 | 562 print 'Saved to %s' % (fname) |
0
febfdc79550b
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catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
563 except Exception, e: |
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parents:
diff
changeset
|
564 print 'Error saving %s: %s' % (fname, str(e)) |
febfdc79550b
moved repository to Assembla
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parents:
diff
changeset
|
565 |
febfdc79550b
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parents:
diff
changeset
|
566 def do_load(self, fname=None): |
febfdc79550b
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parents:
diff
changeset
|
567 """Runs command(s) from a file.""" |
febfdc79550b
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parents:
diff
changeset
|
568 if fname is None: |
febfdc79550b
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catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
569 fname = self.defaultFileName |
febfdc79550b
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parents:
diff
changeset
|
570 keepstate = Statekeeper(self, ('stdin','use_rawinput','prompt','continuationPrompt')) |
41 | 571 if isinstance(fname, file): |
572 self.stdin = fname | |
573 else: | |
0
febfdc79550b
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catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
574 try: |
41 | 575 self.stdin = open(fname, 'r') |
576 except IOError, e: | |
577 try: | |
578 self.stdin = open('%s.%s' % (fname, self.defaultExtension), 'r') | |
579 except IOError: | |
580 print 'Problem opening file %s: \n%s' % (fname, e) | |
581 keepstate.restore() | |
582 return | |
0
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
583 self.use_rawinput = False |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
584 self.prompt = self.continuationPrompt = '' |
42 | 585 stop = self.cmdloop() |
0
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
586 self.stdin.close() |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
587 keepstate.restore() |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
588 self.lastcmd = '' |
48 | 589 return (stop == self._STOP_AND_EXIT) and self._STOP_AND_EXIT |
590 do__load = do_load # avoid an unfortunate legacy use of do_load from sqlpython | |
43 | 591 |
0
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
592 def do_run(self, arg): |
febfdc79550b
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parents:
diff
changeset
|
593 """run [arg]: re-runs an earlier command |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
594 |
febfdc79550b
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catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
595 no arg -> run most recent command |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
596 arg is integer -> run one history item, by index |
febfdc79550b
moved repository to Assembla
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parents:
diff
changeset
|
597 arg is string -> run most recent command by string search |
febfdc79550b
moved repository to Assembla
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parents:
diff
changeset
|
598 arg is /enclosed in forward-slashes/ -> run most recent by regex |
febfdc79550b
moved repository to Assembla
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parents:
diff
changeset
|
599 """ |
febfdc79550b
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parents:
diff
changeset
|
600 'run [N]: runs the SQL that was run N commands ago' |
febfdc79550b
moved repository to Assembla
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parents:
diff
changeset
|
601 runme = self.last_matching(arg) |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
602 print runme |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
603 if runme: |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
604 runme = self.precmd(runme) |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
605 stop = self.onecmd(runme) |
febfdc79550b
moved repository to Assembla
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parents:
diff
changeset
|
606 stop = self.postcmd(stop, runme) |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
607 do_r = do_run |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
608 |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
609 def fileimport(self, statement, source): |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
610 try: |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
611 f = open(source) |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
612 except IOError: |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
613 self.stdout.write("Couldn't read from file %s\n" % source) |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
614 return '' |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
615 data = f.read() |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
616 f.close() |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
617 return data |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
618 |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
619 class HistoryItem(str): |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
620 def __init__(self, instr): |
121
fe432d010ecc
going to attempt 2.4 and 2.6 compatibility
catherine@dellzilla
parents:
119
diff
changeset
|
621 str.__init__(self) |
0
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
622 self.lowercase = self.lower() |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
623 self.idx = None |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
624 def pr(self): |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
625 return '-------------------------[%d]\n%s\n' % (self.idx, str(self)) |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
626 |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
627 class History(list): |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
628 rangeFrom = re.compile(r'^([\d])+\s*\-$') |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
629 def append(self, new): |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
630 new = HistoryItem(new) |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
631 list.append(self, new) |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
632 new.idx = len(self) |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
633 def extend(self, new): |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
634 for n in new: |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
635 self.append(n) |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
636 def get(self, getme): |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
637 try: |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
638 getme = int(getme) |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
639 if getme < 0: |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
640 return self[:(-1 * getme)] |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
641 else: |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
642 return [self[getme-1]] |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
643 except IndexError: |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
644 return [] |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
645 except (ValueError, TypeError): |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
646 getme = getme.strip() |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
647 mtch = self.rangeFrom.search(getme) |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
648 if mtch: |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
649 return self[(int(mtch.group(1))-1):] |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
650 if getme.startswith(r'/') and getme.endswith(r'/'): |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
651 finder = re.compile(getme[1:-1], re.DOTALL | re.MULTILINE | re.IGNORECASE) |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
652 def isin(hi): |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
653 return finder.search(hi) |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
654 else: |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
655 def isin(hi): |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
656 return (getme.lower() in hi.lowercase) |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
657 return [itm for itm in self if isin(itm)] |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
658 |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
659 class NotSettableError(Exception): |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
660 pass |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
661 |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
662 def cast(current, new): |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
663 """Tries to force a new value into the same type as the current.""" |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
664 typ = type(current) |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
665 if typ == bool: |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
666 try: |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
667 return bool(int(new)) |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
668 except ValueError, TypeError: |
febfdc79550b
moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff
changeset
|
669 pass |
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670 try: |
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671 new = new.lower() |
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672 except: |
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673 pass |
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674 if (new=='on') or (new[0] in ('y','t')): |
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675 return True |
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676 if (new=='off') or (new[0] in ('n','f')): |
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677 return False |
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678 else: |
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679 try: |
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680 return typ(new) |
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681 except: |
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682 pass |
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683 print "Problem setting parameter (now %s) to %s; incorrect type?" % (current, new) |
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684 return current |
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685 |
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686 class Statekeeper(object): |
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687 def __init__(self, obj, attribs): |
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688 self.obj = obj |
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689 self.attribs = attribs |
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690 self.save() |
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691 def save(self): |
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692 for attrib in self.attribs: |
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693 setattr(self, attrib, getattr(self.obj, attrib)) |
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694 def restore(self): |
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695 for attrib in self.attribs: |
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696 setattr(self.obj, attrib, getattr(self, attrib)) |
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697 |
104 | 698 class Borg(object): |
699 '''All instances of any Borg subclass will share state. | |
700 from Python Cookbook, 2nd Ed., recipe 6.16''' | |
701 _shared_state = {} | |
702 def __new__(cls, *a, **k): | |
703 obj = object.__new__(cls, *a, **k) | |
704 obj.__dict__ = cls._shared_state | |
705 return obj | |
706 | |
707 class OutputTrap(Borg): | |
708 '''Instantiate an OutputTrap to divert/capture ALL stdout output. For use in unit testing. | |
709 Call `tearDown()` to return to normal output.''' | |
710 def __init__(self): | |
105 | 711 self.old_stdout = sys.stdout |
104 | 712 self.trap = tempfile.TemporaryFile() |
713 sys.stdout = self.trap | |
105 | 714 def read(self): |
104 | 715 self.trap.seek(0) |
716 result = self.trap.read() | |
105 | 717 self.trap.truncate(0) |
718 return result.strip('\x00') | |
104 | 719 def tearDown(self): |
720 sys.stdout = self.old_stdout | |
721 | |
722 class TranscriptReader(object): | |
723 def __init__(self, cmdapp, filename='test_cmd2.txt'): | |
724 self.cmdapp = cmdapp | |
725 try: | |
726 tfile = open(filename) | |
727 self.transcript = tfile.read() | |
728 tfile.close() | |
729 except IOError: | |
730 self.transcript = '' | |
731 self.bookmark = 0 | |
732 def refreshCommandFinder(self): | |
733 prompt = pyparsing.Suppress(pyparsing.lineStart + self.cmdapp.prompt) | |
734 continuationPrompt = pyparsing.Suppress(pyparsing.lineStart + self.cmdapp.continuationPrompt) | |
735 self.cmdtxtPattern = (prompt + pyparsing.restOfLine + pyparsing.ZeroOrMore( | |
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736 pyparsing.lineEnd + continuationPrompt + pyparsing.restOfLine))("command") |
104 | 737 def inputGenerator(self): |
738 while True: | |
739 self.refreshCommandFinder() | |
740 (thiscmd, startpos, endpos) = self.cmdtxtPattern.scanString(self.transcript[self.bookmark:], maxMatches=1).next() | |
741 lineNum = self.transcript.count('\n', 0, self.bookmark+startpos) + 2 | |
742 self.bookmark += endpos | |
743 yield (''.join(thiscmd.command), lineNum) | |
744 def nextExpected(self): | |
745 self.refreshCommandFinder() | |
746 try: | |
747 (thiscmd, startpos, endpos) = self.cmdtxtPattern.scanString(self.transcript[self.bookmark:], maxMatches=1).next() | |
748 result = self.transcript[self.bookmark:self.bookmark+startpos] | |
749 self.bookmark += startpos | |
750 return result | |
751 except StopIteration: | |
752 return self.transcript[self.bookmark:] | |
122 | 753 |
104 | 754 class Cmd2TestCase(unittest.TestCase): |
755 '''Subclass this, setting CmdApp and transcriptFileName, to make a unittest.TestCase class | |
109 | 756 that will execute the commands in transcriptFileName and expect the results shown. |
757 See example.py''' | |
104 | 758 # problem: this (raw) case gets called by unittest.main - we don't want it to be. hmm |
759 CmdApp = None | |
760 transcriptFileName = '' | |
761 def setUp(self): | |
762 if self.CmdApp: | |
105 | 763 self.outputTrap = OutputTrap() |
104 | 764 self.cmdapp = self.CmdApp() |
765 self.transcriptReader = TranscriptReader(self.cmdapp, self.transcriptFileName) | |
766 def testall(self): | |
767 if self.CmdApp: | |
768 for (cmdInput, lineNum) in self.transcriptReader.inputGenerator(): | |
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769 self.cmdapp.onecmd(cmdInput, assumeComplete=True) |
105 | 770 result = self.outputTrap.read() |
104 | 771 expected = self.transcriptReader.nextExpected() |
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772 self.assertEqual(self.stripByLine(result), self.stripByLine(expected), |
104 | 773 '\nFile %s, line %d\nCommand was:\n%s\nExpected:\n%s\nGot:\n%s\n' % |
774 (self.transcriptFileName, lineNum, cmdInput, expected, result)) | |
107
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775 def stripByLine(self, s): |
117
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776 bareprompt = self.cmdapp.continuationPrompt.strip() |
122 | 777 lines = [] |
778 for line in s.splitlines(): | |
779 line = line.rstrip() | |
780 if line.startswith(bareprompt): | |
781 line = line.replace(bareprompt, '', 1) | |
126 | 782 lines.append(line) |
117
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783 return '\n'.join(lines).strip() |
104 | 784 def tearDown(self): |
785 if self.CmdApp: | |
786 self.outputTrap.tearDown() | |
787 | |
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788 if __name__ == '__main__': |
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789 doctest.testmod() |