Mercurial > python-cmd2

annotate cmd2.py @ 32:e72eb9137a87

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trying fix for IOError crash in redirect
author catherine.devlin@gmail.com
date Fri, 16 May 2008 10:40:15 -0400
parents c8efa4369189
children f472921d6189
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
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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
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15 - Catherine Devlin, Jan 03 2008 - catherinedevlin.blogspot.com
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16
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17 CHANGES:
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18 As of 0.3.0, options should be specified as `optparse` options. See README.txt.
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19 flagReader.py options are still supported for backward compatibility
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20 """
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21 import cmd, re, os, sys, optparse
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22 from optparse import make_option
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23
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24 class OptionParser(optparse.OptionParser):
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25 def exit(self, status=0, msg=None):
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26 if msg:
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27 print msg
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28
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29 def error(self, msg):
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30 """error(msg : string)
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31
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32 Print a usage message incorporating 'msg' to stderr and exit.
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33 If you override this in a subclass, it should not return -- it
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34 should either exit or raise an exception.
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35 """
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36 #print msg
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37 #print self.format_help()
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38 raise
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39
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40 def options(option_list):
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41 def option_setup(func):
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42 optionParser = OptionParser()
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43 for opt in option_list:
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44 optionParser.add_option(opt)
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45 optionParser.set_usage("%s [options] arg" % func.__name__.strip('do_'))
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46 def newFunc(instance, arg):
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47 try:
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48 opts, arg = optionParser.parse_args(arg.split())
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49 arg = ' '.join(arg)
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50 except (optparse.OptionValueError, optparse.BadOptionError,
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51 optparse.OptionError, optparse.AmbiguousOptionError,
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52 optparse.OptionConflictError), e:
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53 print e
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54 optionParser.print_help()
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55 return
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56 result = func(instance, arg, opts)
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57 return result
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58 newFunc.__doc__ = '%s\n%s' % (func.__doc__, optionParser.format_help())
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59 return newFunc
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60 return option_setup
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61
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62 class Cmd(cmd.Cmd):
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63 caseInsensitive = True
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64 multilineCommands = []
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65 continuationPrompt = '> '
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66 shortcuts = {'?': 'help', '!': 'shell', '@': 'load'}
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67 excludeFromHistory = '''run r list l history hi ed li eof'''.split()
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68 defaultExtension = 'txt'
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69 defaultFileName = 'command.txt'
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70 editor = os.environ.get('EDITOR')
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71 if not editor:
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72 if sys.platform[:3] == 'win':
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73 editor = 'notepad'
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74 else:
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75 for editor in ['gedit', 'kate', 'vim', 'emacs', 'nano', 'pico', 'vi']:
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76 if not os.system('which %s' % (editor)):
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77 break
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78
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79 settable = ['prompt', 'continuationPrompt', 'defaultFileName', 'editor', 'caseInsensitive']
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80 terminators = ';\n'
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81 def do_cmdenvironment(self, args):
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82 self.stdout.write("""
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83 Commands are %(casesensitive)scase-sensitive.
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84 Commands may be terminated with: %(terminators)s
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85 Settable parameters: %(settable)s
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86 """ %
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87 { 'casesensitive': ('not ' and self.caseInsensitive) or '',
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88 'terminators': ' '.join(self.terminators),
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89 'settable': ' '.join(self.settable)
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90 })
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91
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92 def do_help(self, arg):
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93 cmd.Cmd.do_help(self, arg)
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94 try:
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95 fn = getattr(self, 'do_' + arg)
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96 if fn and fn.optionParser:
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97 fn.optionParser.print_help(file=self.stdout)
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98 except AttributeError:
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99 pass
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100
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101 def __init__(self, *args, **kwargs):
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102 cmd.Cmd.__init__(self, *args, **kwargs)
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103 self.history = History()
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104
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105 def do_shortcuts(self, args):
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106 """Lists single-key shortcuts available."""
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107 result = "\n".join('%s: %s' % (sc[0], sc[1]) for sc in self.shortcuts.items())
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108 self.stdout.write("Single-key shortcuts for other commands:\n%s\n" % (result))
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109
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110 legalFileName = re.compile(r'''^[^"'\s]+$''')
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111 def parseRedirector(self, statement, symbol, mustBeTerminated=False):
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112 parts = statement.split(symbol)
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113 if (len(parts) < 2):
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114 return statement, None
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115 if mustBeTerminated and (parts[-2].strip()[-1] not in self.terminators):
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116 return statement, None
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117 (newStatement, redirect) = (symbol.join(parts[:-1]), parts[-1].strip())
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118 if not self.legalFileName.search(redirect):
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119 return statement, None
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120 return newStatement, redirect
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121
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122 def extractCommand(self, statement):
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123 try:
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124 (command, args) = statement.split(None,1)
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125 except ValueError:
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126 (command, args) = statement, ''
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127 if self.caseInsensitive:
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128 command = command.lower()
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129 return command, args
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130
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131 def parseRedirectors(self, statement):
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132 mustBeTerminated = self.extractCommand(statement)[0] in self.multilineCommands
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133 newStatement, redirect = self.parseRedirector(statement, '>>', mustBeTerminated)
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134 if redirect:
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135 return newStatement, redirect, 'a'
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136 newStatement, redirect = self.parseRedirector(statement, '>', mustBeTerminated)
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137 if redirect:
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138 return newStatement, redirect, 'w'
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139 newStatement, redirect = self.parseRedirector(statement, '<', mustBeTerminated)
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140 if redirect:
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141 return newStatement, redirect, 'r'
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142 return statement, '', ''
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143
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144 def onecmd(self, line):
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145 """Interpret the argument as though it had been typed in response
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146 to the prompt.
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147
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148 This may be overridden, but should not normally need to be;
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149 see the precmd() and postcmd() methods for useful execution hooks.
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150 The return value is a flag indicating whether interpretation of
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151 commands by the interpreter should stop.
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152
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153 """
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154 command, args = self.extractCommand(line)
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155 statement = ' '.join([command, args])
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156 if command in self.multilineCommands:
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157 statement = self.finishStatement(statement)
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158 statekeeper = None
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159 statement, redirect, mode = self.parseRedirectors(statement)
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160 if redirect:
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161 if mode in ('w','a'):
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162 statekeeper = Statekeeper(self, ('stdout',))
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163 try:
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164 self.stdout = open(redirect, mode)
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165 except IOError, e:
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166 print str(e)
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parents: 20
diff changeset
167 return 0
0
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diff changeset
168 else:
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diff changeset
169 statement = '%s %s' % (statement, self.fileimport(statement=statement, source=redirect))
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diff changeset
170 stop = cmd.Cmd.onecmd(self, statement)
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diff changeset
171 try:
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diff changeset
172 if command not in self.excludeFromHistory:
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diff changeset
173 self.history.append(statement)
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diff changeset
174 finally:
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diff changeset
175 if statekeeper:
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parents:
diff changeset
176 self.stdout.close()
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diff changeset
177 statekeeper.restore()
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178 return stop
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179
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180 statementEndPattern = re.compile(r'[%s]\s*$' % terminators)
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parents:
diff changeset
181 def statementHasEnded(self, lines):
3
4520a1a073ff require terminator for redirection
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parents: 2
diff changeset
182 #import pdb; pdb.set_trace()
0
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183 return bool(self.statementEndPattern.search(lines)) \
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184 or lines[-3:] == 'EOF' \
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185 or self.parseRedirectors(lines)[1]
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186
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187 def finishStatement(self, firstline):
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188 statement = firstline
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diff changeset
189 while not self.statementHasEnded(statement):
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190 inp = self.pseudo_raw_input(self.continuationPrompt)
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191 statement = '%s\n%s' % (statement, inp)
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192 return statement
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193 # assembling a list of lines and joining them at the end would be faster,
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194 # but statementHasEnded needs a string arg; anyway, we're getting
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195 # user input and users are slow.
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196
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197 def pseudo_raw_input(self, prompt):
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198 """copied from cmd's cmdloop; like raw_input, but accounts for changed stdin, stdout"""
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199
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200 if self.use_rawinput:
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201 try:
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202 line = raw_input(prompt)
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203 except EOFError:
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204 line = 'EOF'
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205 else:
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206 self.stdout.write(prompt)
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207 self.stdout.flush()
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208 line = self.stdin.readline()
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209 if not len(line):
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210 line = 'EOF'
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211 else:
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212 if line[-1] == '\n': # this was always true in Cmd
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213 line = line[:-1]
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214 return line
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215
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216 def cmdloop(self, intro=None):
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217 """Repeatedly issue a prompt, accept input, parse an initial prefix
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218 off the received input, and dispatch to action methods, passing them
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219 the remainder of the line as argument.
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220 """
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221
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diff changeset
222 # An almost perfect copy from Cmd; however, the pseudo_raw_input portion
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diff changeset
223 # has been split out so that it can be called separately
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224
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diff changeset
225 self.preloop()
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diff changeset
226 if self.use_rawinput and self.completekey:
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227 try:
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228 import readline
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229 self.old_completer = readline.get_completer()
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diff changeset
230 readline.set_completer(self.complete)
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diff changeset
231 readline.parse_and_bind(self.completekey+": complete")
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232 except ImportError:
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233 pass
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234 try:
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diff changeset
235 if intro is not None:
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diff changeset
236 self.intro = intro
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diff changeset
237 if self.intro:
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diff changeset
238 self.stdout.write(str(self.intro)+"\n")
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diff changeset
239 stop = None
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diff changeset
240 while not stop:
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diff changeset
241 if self.cmdqueue:
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diff changeset
242 line = self.cmdqueue.pop(0)
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diff changeset
243 else:
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diff changeset
244 line = self.pseudo_raw_input(self.prompt)
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diff changeset
245 line = self.precmd(line)
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diff changeset
246 stop = self.onecmd(line)
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diff changeset
247 stop = self.postcmd(stop, line)
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diff changeset
248 self.postloop()
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249 finally:
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diff changeset
250 if self.use_rawinput and self.completekey:
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251 try:
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diff changeset
252 import readline
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diff changeset
253 readline.set_completer(self.old_completer)
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diff changeset
254 except ImportError:
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255 pass
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diff changeset
256
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diff changeset
257 def do_EOF(self, arg):
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diff changeset
258 return True
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diff changeset
259 do_eof = do_EOF
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260
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diff changeset
261 def clean(self, s):
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parents:
diff changeset
262 """cleans up a string"""
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diff changeset
263 if self.caseInsensitive:
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diff changeset
264 return s.strip().lower()
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diff changeset
265 return s.strip()
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266
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diff changeset
267 def parseline(self, line):
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diff changeset
268 """Parse the line into a command name and a string containing
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diff changeset
269 the arguments. Returns a tuple containing (command, args, line).
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diff changeset
270 'command' and 'args' may be None if the line couldn't be parsed.
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diff changeset
271 """
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diff changeset
272 line = line.strip()
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diff changeset
273 if not line:
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diff changeset
274 return None, None, line
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diff changeset
275 shortcut = self.shortcuts.get(line[0])
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diff changeset
276 if shortcut and hasattr(self, 'do_%s' % shortcut):
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diff changeset
277 line = '%s %s' % (shortcut, line[1:])
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diff changeset
278 i, n = 0, len(line)
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diff changeset
279 while i < n and line[i] in self.identchars: i = i+1
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diff changeset
280 cmd, arg = line[:i], line[i:].strip().strip(self.terminators)
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diff changeset
281 return cmd, arg, line
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diff changeset
282
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diff changeset
283 def showParam(self, param):
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diff changeset
284 param = self.clean(param)
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diff changeset
285 if param in self.settable:
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diff changeset
286 val = getattr(self, param)
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diff changeset
287 self.stdout.write('%s: %s\n' % (param, str(getattr(self, param))))
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diff changeset
288
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diff changeset
289 def do_quit(self, arg):
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diff changeset
290 return 1
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diff changeset
291 do_exit = do_quit
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diff changeset
292 do_q = do_quit
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diff changeset
293
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diff changeset
294 def do_show(self, arg):
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diff changeset
295 'Shows value of a parameter'
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diff changeset
296 if arg.strip():
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diff changeset
297 self.showParam(arg)
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diff changeset
298 else:
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diff changeset
299 for param in self.settable:
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diff changeset
300 self.showParam(param)
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diff changeset
301
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diff changeset
302 def do_set(self, arg):
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diff changeset
303 'Sets a parameter'
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diff changeset
304 try:
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diff changeset
305 paramName, val = arg.split(None, 1)
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diff changeset
306 paramName = self.clean(paramName)
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diff changeset
307 if paramName not in self.settable:
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diff changeset
308 raise NotSettableError
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diff changeset
309 currentVal = getattr(self, paramName)
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310 val = cast(currentVal, val.strip(self.terminators))
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diff changeset
311 setattr(self, paramName, val)
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diff changeset
312 self.stdout.write('%s - was: %s\nnow: %s\n' % (paramName, currentVal, val))
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diff changeset
313 except (ValueError, AttributeError, NotSettableError), e:
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diff changeset
314 self.do_show(arg)
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diff changeset
315
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diff changeset
316 def do_shell(self, arg):
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parents:
diff changeset
317 'execute a command as if at the OS prompt.'
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diff changeset
318 os.system(arg)
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diff changeset
319
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diff changeset
320 def do_history(self, arg):
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parents:
diff changeset
321 """history [arg]: lists past commands issued
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diff changeset
322
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diff changeset
323 no arg -> list all
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
324 arg is integer -> list one history item, by index
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
325 arg is string -> string search
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
326 arg is /enclosed in forward-slashes/ -> regular expression search
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
327 """
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
328 if arg:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
329 history = self.history.get(arg)
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
330 else:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
331 history = self.history
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
332 for hi in history:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
333 self.stdout.write(hi.pr())
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
334 def last_matching(self, arg):
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
335 try:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
336 if arg:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
337 return self.history.get(arg)[-1]
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
338 else:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
339 return self.history[-1]
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
340 except:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
341 return None
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
342 def do_list(self, arg):
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
343 """list [arg]: lists last command issued
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
344
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
345 no arg -> list absolute last
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
346 arg is integer -> list one history item, by index
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
347 - arg, arg - (integer) -> list up to or after #arg
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
348 arg is string -> list last command matching string search
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
349 arg is /enclosed in forward-slashes/ -> regular expression search
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
350 """
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
351 try:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
352 self.stdout.write(self.last_matching(arg).pr())
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
353 except:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
354 pass
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
355 do_hi = do_history
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
356 do_l = do_list
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
357 do_li = do_list
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
358
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
359 def do_ed(self, arg):
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
360 """ed: edit most recent command in text editor
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
361 ed [N]: edit numbered command from history
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
362 ed [filename]: edit specified file name
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
363
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
364 commands are run after editor is closed.
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
365 "set edit (program-name)" or set EDITOR environment variable
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
366 to control which editing program is used."""
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
367 if not self.editor:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
368 print "please use 'set editor' to specify your text editing program of choice."
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
369 return
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
370 filename = self.defaultFileName
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
371 buffer = ''
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
372 try:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
373 arg = int(arg)
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
374 buffer = self.last_matching(arg)
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
375 except:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
376 if arg:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
377 filename = arg
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
378 else:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
379 buffer = self.last_matching(arg)
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
380
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
381 if buffer:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
382 f = open(filename, 'w')
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
383 f.write(buffer or '')
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
384 f.close()
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
385
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
386 os.system('%s %s' % (self.editor, filename))
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
387 self.do_load(filename)
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
388 do_edit = do_ed
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
389
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
390 def do_save(self, fname=None):
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
391 """Saves most recent command to a file."""
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
392
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
393 if fname is None:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
394 fname = self.defaultFileName
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
395 try:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
396 f = open(fname, 'w')
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
397 f.write(self.history[-1])
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
398 f.close()
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
399 except Exception, e:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
400 print 'Error saving %s: %s' % (fname, str(e))
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
401
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
402 def do_load(self, fname=None):
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
403 """Runs command(s) from a file."""
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
404 if fname is None:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
405 fname = self.defaultFileName
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
406 keepstate = Statekeeper(self, ('stdin','use_rawinput','prompt','continuationPrompt'))
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
407 try:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
408 self.stdin = open(fname, 'r')
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
409 except IOError, e:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
410 try:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
411 self.stdin = open('%s.%s' % (fname, self.defaultExtension), 'r')
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
412 except IOError:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
413 print 'Problem opening file %s: \n%s' % (fname, e)
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
414 keepstate.restore()
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
415 return
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
416 self.use_rawinput = False
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
417 self.prompt = self.continuationPrompt = ''
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
418 self.cmdloop()
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
419 self.stdin.close()
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
420 keepstate.restore()
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
421 self.lastcmd = ''
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
422
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
423 def do_run(self, arg):
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
424 """run [arg]: re-runs an earlier command
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
425
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
426 no arg -> run most recent command
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
427 arg is integer -> run one history item, by index
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
428 arg is string -> run most recent command by string search
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
429 arg is /enclosed in forward-slashes/ -> run most recent by regex
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
430 """
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
431 'run [N]: runs the SQL that was run N commands ago'
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
432 runme = self.last_matching(arg)
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
433 print runme
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
434 if runme:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
435 runme = self.precmd(runme)
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
436 stop = self.onecmd(runme)
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
437 stop = self.postcmd(stop, runme)
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
438 do_r = do_run
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
439
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
440 def fileimport(self, statement, source):
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
441 try:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
442 f = open(source)
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
443 except IOError:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
444 self.stdout.write("Couldn't read from file %s\n" % source)
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
445 return ''
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
446 data = f.read()
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
447 f.close()
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
448 return data
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
449
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
450 class HistoryItem(str):
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
451 def __init__(self, instr):
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
452 str.__init__(self, instr)
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
453 self.lowercase = self.lower()
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
454 self.idx = None
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
455 def pr(self):
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
456 return '-------------------------[%d]\n%s\n' % (self.idx, str(self))
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
457
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
458 class History(list):
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
459 rangeFrom = re.compile(r'^([\d])+\s*\-$')
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
460 def append(self, new):
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
461 new = HistoryItem(new)
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
462 list.append(self, new)
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
463 new.idx = len(self)
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
464 def extend(self, new):
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
465 for n in new:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
466 self.append(n)
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
467 def get(self, getme):
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
468 try:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
469 getme = int(getme)
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
470 if getme < 0:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
471 return self[:(-1 * getme)]
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
472 else:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
473 return [self[getme-1]]
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
474 except IndexError:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
475 return []
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
476 except (ValueError, TypeError):
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
477 getme = getme.strip()
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
478 mtch = self.rangeFrom.search(getme)
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
479 if mtch:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
480 return self[(int(mtch.group(1))-1):]
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
481 if getme.startswith(r'/') and getme.endswith(r'/'):
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
482 finder = re.compile(getme[1:-1], re.DOTALL | re.MULTILINE | re.IGNORECASE)
febfdc79550b moved repository to Assembla
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483 def isin(hi):
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484 return finder.search(hi)
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485 else:
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486 def isin(hi):
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487 return (getme.lower() in hi.lowercase)
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488 return [itm for itm in self if isin(itm)]
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489
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490 class NotSettableError(Exception):
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491 pass
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492
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493 def cast(current, new):
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494 """Tries to force a new value into the same type as the current."""
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495 typ = type(current)
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496 if typ == bool:
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497 try:
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498 return bool(int(new))
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499 except ValueError, TypeError:
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500 pass
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501 try:
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502 new = new.lower()
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503 except:
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504 pass
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505 if (new=='on') or (new[0] in ('y','t')):
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506 return True
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507 if (new=='off') or (new[0] in ('n','f')):
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508 return False
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509 else:
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510 try:
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511 return typ(new)
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512 except:
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513 pass
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514 print "Problem setting parameter (now %s) to %s; incorrect type?" % (current, new)
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515 return current
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516
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517 class Statekeeper(object):
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518 def __init__(self, obj, attribs):
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519 self.obj = obj
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520 self.attribs = attribs
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521 self.save()
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522 def save(self):
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523 for attrib in self.attribs:
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524 setattr(self, attrib, getattr(self.obj, attrib))
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525 def restore(self):
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526 for attrib in self.attribs:
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e72eb9137a87 trying fix for IOError crash in redirect
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527 setattr(self.obj, attrib, getattr(self, attrib))