Mercurial > python-cmd2

annotate cmd2.py @ 2:1ea887b51cad

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python 2.4 compatibility
author catherine@DellZilla.myhome.westell.com
date Fri, 11 Apr 2008 08:56:54 -0400
parents febfdc79550b
children 4520a1a073ff
rev   line source
0
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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 flags
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13 Redirection to file with >, >>; input from file with <
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14 """
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15
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16 """
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17 todo:
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18 edited commands end with "EOF". Hmm.
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19 example of flag usage
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20
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21 - Catherine Devlin, Jan 03 2008 - catherinedevlin.blogspot.com
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22 """
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23 import cmd, re, os, sys
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24 import flagReader
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25
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26 class Cmd(cmd.Cmd):
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27 caseInsensitive = True
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28 multilineCommands = []
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29 continuationPrompt = '> '
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30 shortcuts = {'?': 'help', '!': 'shell', '@': 'load'}
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31 excludeFromHistory = '''run r list l history hi ed li eof'''.split()
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32 defaultExtension = 'txt'
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33 defaultFileName = 'command.txt'
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34 editor = os.environ.get('EDITOR')
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35 if not editor:
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36 if sys.platform[:3] == 'win':
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37 editor = 'notepad'
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38 else:
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39 for editor in ['gedit', 'kate', 'vim', 'emacs', 'nano', 'pico']:
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40 if not os.system('which %s' % (editor)):
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41 break
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42
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43 settable = ['prompt', 'continuationPrompt', 'defaultFileName', 'editor', 'caseInsensitive']
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44 terminators = ';\n'
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45 def do_cmdenvironment(self, args):
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46 self.stdout.write("""
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47 Commands are %(casesensitive)scase-sensitive.
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48 Commands may be terminated with: %(terminators)s
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49 Settable parameters: %(settable)s
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50 """ %
2
1ea887b51cad python 2.4 compatibility
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51 { 'casesensitive': ('not ' and self.caseInsensitive) or '',
0
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52 'terminators': ' '.join(self.terminators),
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53 'settable': ' '.join(self.settable)
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54 })
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55
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56 def __init__(self, *args, **kwargs):
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57 cmd.Cmd.__init__(self, *args, **kwargs)
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58 self.history = History()
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59
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60 def do_shortcuts(self, args):
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61 """Lists single-key shortcuts available."""
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62 result = "\n".join('%s: %s' % (sc[0], sc[1]) for sc in self.shortcuts.items())
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63 self.stdout.write("Single-key shortcuts for other commands:\n%s\n" % (result))
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64
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65 legalFileName = re.compile(r'''^[^"'\s]+$''')
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66 def parseRedirector(self, statement, symbol):
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67 parts = statement.split(symbol)
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68 if len(parts) < 2:
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69 return statement, None
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70 (newStatement, redirect) = (' '.join(parts[:-1]), parts[-1].strip())
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71 if not self.legalFileName.search(redirect):
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72 return statement, None
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73 return newStatement, redirect
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74
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75 def parseRedirectors(self, statement):
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76 newStatement, redirect = self.parseRedirector(statement, '>>')
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77 if redirect:
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78 return newStatement, redirect, 'a'
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79 newStatement, redirect = self.parseRedirector(statement, '>')
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80 if redirect:
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81 return newStatement, redirect, 'w'
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82 newStatement, redirect = self.parseRedirector(statement, '<')
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83 if redirect:
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84 return newStatement, redirect, 'r'
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85 return statement, '', ''
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86
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87 def onecmd(self, line):
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88 """Interpret the argument as though it had been typed in response
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89 to the prompt.
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90
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91 This may be overridden, but should not normally need to be;
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92 see the precmd() and postcmd() methods for useful execution hooks.
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93 The return value is a flag indicating whether interpretation of
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94 commands by the interpreter should stop.
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95
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96 """
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97 try:
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98 (command, args) = line.split(None,1)
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99 except ValueError:
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100 (command, args) = line, ''
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101 if self.caseInsensitive:
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102 command = command.lower()
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103 statement = ' '.join([command, args])
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104 if command in self.multilineCommands:
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105 statement = self.finishStatement(statement)
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106 statekeeper = None
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107 statement, redirect, mode = self.parseRedirectors(statement)
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108 if redirect:
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109 if mode in ('w','a'):
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110 statekeeper = Statekeeper(self, ('stdout',))
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111 self.stdout = open(redirect, mode)
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112 else:
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113 statement = '%s %s' % (statement, self.fileimport(statement=statement, source=redirect))
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114 stop = cmd.Cmd.onecmd(self, statement)
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115 try:
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116 command = statement.split(None,1)[0].lower()
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117 if command not in self.excludeFromHistory:
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118 self.history.append(statement)
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119 finally:
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120 if statekeeper:
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121 self.stdout.close()
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122 statekeeper.restore()
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123 return stop
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124
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125 statementEndPattern = re.compile(r'[%s]\s*$' % terminators)
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126 def statementHasEnded(self, lines):
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127 return bool(self.statementEndPattern.search(lines)) \
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128 or lines[-3:] == 'EOF' \
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129 or self.parseRedirectors(lines)[1]
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130
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131 def finishStatement(self, firstline):
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132 statement = firstline
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133 while not self.statementHasEnded(statement):
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134 inp = self.pseudo_raw_input(self.continuationPrompt)
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135 statement = '%s\n%s' % (statement, inp)
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136 return statement
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137 # assembling a list of lines and joining them at the end would be faster,
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138 # but statementHasEnded needs a string arg; anyway, we're getting
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139 # user input and users are slow.
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140
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141 def pseudo_raw_input(self, prompt):
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142 """copied from cmd's cmdloop; like raw_input, but accounts for changed stdin, stdout"""
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143
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144 if self.use_rawinput:
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145 try:
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146 line = raw_input(prompt)
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147 except EOFError:
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148 line = 'EOF'
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149 else:
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150 self.stdout.write(prompt)
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151 self.stdout.flush()
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152 line = self.stdin.readline()
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153 if not len(line):
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diff changeset
154 line = 'EOF'
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diff changeset
155 else:
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diff changeset
156 if line[-1] == '\n': # this was always true in Cmd
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diff changeset
157 line = line[:-1]
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diff changeset
158 return line
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parents:
diff changeset
159
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diff changeset
160 def cmdloop(self, intro=None):
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diff changeset
161 """Repeatedly issue a prompt, accept input, parse an initial prefix
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diff changeset
162 off the received input, and dispatch to action methods, passing them
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diff changeset
163 the remainder of the line as argument.
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diff changeset
164 """
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165
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diff changeset
166 # An almost perfect copy from Cmd; however, the pseudo_raw_input portion
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diff changeset
167 # has been split out so that it can be called separately
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168
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diff changeset
169 self.preloop()
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diff changeset
170 if self.use_rawinput and self.completekey:
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diff changeset
171 try:
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diff changeset
172 import readline
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173 self.old_completer = readline.get_completer()
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diff changeset
174 readline.set_completer(self.complete)
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diff changeset
175 readline.parse_and_bind(self.completekey+": complete")
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176 except ImportError:
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177 pass
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diff changeset
178 try:
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diff changeset
179 if intro is not None:
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180 self.intro = intro
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diff changeset
181 if self.intro:
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182 self.stdout.write(str(self.intro)+"\n")
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183 stop = None
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184 while not stop:
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185 if self.cmdqueue:
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diff changeset
186 line = self.cmdqueue.pop(0)
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187 else:
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188 line = self.pseudo_raw_input(self.prompt)
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189 line = self.precmd(line)
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190 stop = self.onecmd(line)
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191 stop = self.postcmd(stop, line)
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diff changeset
192 self.postloop()
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193 finally:
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194 if self.use_rawinput and self.completekey:
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diff changeset
195 try:
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diff changeset
196 import readline
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197 readline.set_completer(self.old_completer)
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diff changeset
198 except ImportError:
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199 pass
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diff changeset
200
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diff changeset
201 def do_EOF(self, arg):
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202 return True
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diff changeset
203 do_eof = do_EOF
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204
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diff changeset
205 def clean(self, s):
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diff changeset
206 """cleans up a string"""
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diff changeset
207 if self.caseInsensitive:
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diff changeset
208 return s.strip().lower()
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diff changeset
209 return s.strip()
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210
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diff changeset
211 def parseline(self, line):
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diff changeset
212 """Parse the line into a command name and a string containing
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213 the arguments. Returns a tuple containing (command, args, line).
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diff changeset
214 'command' and 'args' may be None if the line couldn't be parsed.
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diff changeset
215 """
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diff changeset
216 line = line.strip()
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diff changeset
217 if not line:
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218 return None, None, line
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diff changeset
219 shortcut = self.shortcuts.get(line[0])
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220 if shortcut and hasattr(self, 'do_%s' % shortcut):
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diff changeset
221 line = '%s %s' % (shortcut, line[1:])
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diff changeset
222 i, n = 0, len(line)
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diff changeset
223 while i < n and line[i] in self.identchars: i = i+1
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diff changeset
224 cmd, arg = line[:i], line[i:].strip().strip(self.terminators)
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diff changeset
225 return cmd, arg, line
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diff changeset
226
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diff changeset
227 def showParam(self, param):
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diff changeset
228 param = self.clean(param)
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diff changeset
229 if param in self.settable:
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diff changeset
230 val = getattr(self, param)
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diff changeset
231 self.stdout.write('%s: %s\n' % (param, str(getattr(self, param))))
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diff changeset
232
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diff changeset
233 def do_quit(self, arg):
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diff changeset
234 return 1
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diff changeset
235 do_exit = do_quit
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diff changeset
236 do_q = do_quit
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diff changeset
237
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diff changeset
238 def do_show(self, arg):
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parents:
diff changeset
239 'Shows value of a parameter'
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diff changeset
240 if arg.strip():
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diff changeset
241 self.showParam(arg)
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diff changeset
242 else:
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diff changeset
243 for param in self.settable:
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diff changeset
244 self.showParam(param)
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245
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diff changeset
246 def do_set(self, arg):
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diff changeset
247 'Sets a parameter'
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diff changeset
248 try:
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diff changeset
249 paramName, val = arg.split(None, 1)
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diff changeset
250 paramName = self.clean(paramName)
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diff changeset
251 if paramName not in self.settable:
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diff changeset
252 raise NotSettableError
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diff changeset
253 currentVal = getattr(self, paramName)
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254 val = cast(currentVal, val.strip(self.terminators))
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diff changeset
255 setattr(self, paramName, val)
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diff changeset
256 self.stdout.write('%s - was: %s\nnow: %s\n' % (paramName, currentVal, val))
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diff changeset
257 except (ValueError, AttributeError, NotSettableError), e:
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diff changeset
258 self.do_show(arg)
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diff changeset
259
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diff changeset
260 def do_shell(self, arg):
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parents:
diff changeset
261 'execute a command as if at the OS prompt.'
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diff changeset
262 os.system(arg)
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diff changeset
263
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diff changeset
264 def do_history(self, arg):
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parents:
diff changeset
265 """history [arg]: lists past commands issued
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diff changeset
266
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diff changeset
267 no arg -> list all
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diff changeset
268 arg is integer -> list one history item, by index
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diff changeset
269 arg is string -> string search
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diff changeset
270 arg is /enclosed in forward-slashes/ -> regular expression search
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diff changeset
271 """
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diff changeset
272 if arg:
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diff changeset
273 history = self.history.get(arg)
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diff changeset
274 else:
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diff changeset
275 history = self.history
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diff changeset
276 for hi in history:
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diff changeset
277 self.stdout.write(hi.pr())
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diff changeset
278 def last_matching(self, arg):
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diff changeset
279 try:
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diff changeset
280 if arg:
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diff changeset
281 return self.history.get(arg)[-1]
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diff changeset
282 else:
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diff changeset
283 return self.history[-1]
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diff changeset
284 except:
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diff changeset
285 return None
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parents:
diff changeset
286 def do_list(self, arg):
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parents:
diff changeset
287 """list [arg]: lists last command issued
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parents:
diff changeset
288
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diff changeset
289 no arg -> list absolute last
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diff changeset
290 arg is integer -> list one history item, by index
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diff changeset
291 - arg, arg - (integer) -> list up to or after #arg
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diff changeset
292 arg is string -> list last command matching string search
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diff changeset
293 arg is /enclosed in forward-slashes/ -> regular expression search
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diff changeset
294 """
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diff changeset
295 try:
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diff changeset
296 self.stdout.write(self.last_matching(arg).pr())
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diff changeset
297 except:
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parents:
diff changeset
298 pass
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parents:
diff changeset
299 do_hi = do_history
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diff changeset
300 do_l = do_list
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parents:
diff changeset
301 do_li = do_list
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diff changeset
302
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diff changeset
303 def do_ed(self, arg):
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diff changeset
304 """ed: edit most recent command in text editor
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diff changeset
305 ed [N]: edit numbered command from history
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diff changeset
306 ed [filename]: edit specified file name
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diff changeset
307
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parents:
diff changeset
308 commands are run after editor is closed.
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parents:
diff changeset
309 "set edit (program-name)" or set EDITOR environment variable
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diff changeset
310 to control which editing program is used."""
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diff changeset
311 if not self.editor:
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parents:
diff changeset
312 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
313 return
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
314 filename = self.defaultFileName
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
315 buffer = ''
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
316 try:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
317 arg = int(arg)
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
318 buffer = self.last_matching(arg)
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
319 except:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
320 if arg:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
321 filename = arg
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
322 else:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
323 buffer = self.last_matching(arg)
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
324
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
325 if buffer:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
326 f = open(filename, 'w')
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
327 f.write(buffer or '')
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
328 f.close()
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
329
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
330 os.system('%s %s' % (self.editor, filename))
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
331 self.do_load(filename)
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
332 do_edit = do_ed
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
333
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
334 def do_save(self, fname=None):
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
335 """Saves most recent command to a file."""
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
336
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
337 if fname is None:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
338 fname = self.defaultFileName
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
339 try:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
340 f = open(fname, 'w')
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
341 f.write(self.history[-1])
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
342 f.close()
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
343 except Exception, e:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
344 print 'Error saving %s: %s' % (fname, str(e))
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
345
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
346 def do_load(self, fname=None):
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
347 """Runs command(s) from a file."""
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
348 if fname is None:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
349 fname = self.defaultFileName
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
350 keepstate = Statekeeper(self, ('stdin','use_rawinput','prompt','continuationPrompt'))
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.stdin = open(fname, 'r')
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
353 except IOError, e:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
354 try:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
355 self.stdin = open('%s.%s' % (fname, self.defaultExtension), 'r')
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
356 except IOError:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
357 print 'Problem opening file %s: \n%s' % (fname, e)
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
358 keepstate.restore()
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
359 return
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
360 self.use_rawinput = False
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
361 self.prompt = self.continuationPrompt = ''
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
362 self.cmdloop()
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
363 self.stdin.close()
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
364 keepstate.restore()
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
365 self.lastcmd = ''
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
366
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
367 def do_run(self, arg):
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
368 """run [arg]: re-runs an earlier command
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
369
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
370 no arg -> run most recent command
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
371 arg is integer -> run one history item, by index
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
372 arg is string -> run most recent command by string search
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
373 arg is /enclosed in forward-slashes/ -> run most recent by regex
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
374 """
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
375 'run [N]: runs the SQL that was run N commands ago'
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
376 runme = self.last_matching(arg)
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
377 print runme
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
378 if runme:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
379 runme = self.precmd(runme)
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
380 stop = self.onecmd(runme)
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
381 stop = self.postcmd(stop, runme)
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
382 do_r = do_run
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
383
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
384 def fileimport(self, statement, source):
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
385 try:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
386 f = open(source)
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
387 except IOError:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
388 self.stdout.write("Couldn't read from file %s\n" % source)
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
389 return ''
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
390 data = f.read()
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
391 f.close()
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
392 return data
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
393
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
394 class HistoryItem(str):
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
395 def __init__(self, instr):
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
396 str.__init__(self, instr)
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
397 self.lowercase = self.lower()
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
398 self.idx = None
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
399 def pr(self):
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
400 return '-------------------------[%d]\n%s\n' % (self.idx, str(self))
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 class History(list):
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
403 rangeFrom = re.compile(r'^([\d])+\s*\-$')
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
404 def append(self, new):
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
405 new = HistoryItem(new)
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
406 list.append(self, new)
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
407 new.idx = len(self)
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
408 def extend(self, new):
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
409 for n in new:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
410 self.append(n)
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
411 def get(self, getme):
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
412 try:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
413 getme = int(getme)
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
414 if getme < 0:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
415 return self[:(-1 * getme)]
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
416 else:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
417 return [self[getme-1]]
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
418 except IndexError:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
419 return []
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
420 except (ValueError, TypeError):
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
421 getme = getme.strip()
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
422 mtch = self.rangeFrom.search(getme)
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
423 if mtch:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
424 return self[(int(mtch.group(1))-1):]
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
425 if getme.startswith(r'/') and getme.endswith(r'/'):
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
426 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
427 def isin(hi):
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
428 return finder.search(hi)
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
429 else:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
430 def isin(hi):
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
431 return (getme.lower() in hi.lowercase)
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
432 return [itm for itm in self if isin(itm)]
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
433
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
434 class NotSettableError(Exception):
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
435 pass
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
436
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
437 def cast(current, new):
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
438 """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
439 typ = type(current)
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
440 if typ == bool:
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 return bool(int(new))
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
443 except ValueError, TypeError:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
444 pass
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
445 try:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
446 new = new.lower()
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
447 except:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
448 pass
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
449 if (new=='on') or (new[0] in ('y','t')):
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
450 return True
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
451 if (new=='off') or (new[0] in ('n','f')):
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
452 return False
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
453 else:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
454 try:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
455 return typ(new)
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
456 except:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
457 pass
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
458 print "Problem setting parameter (now %s) to %s; incorrect type?" % (current, new)
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
459 return current
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
460
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
461 class Statekeeper(object):
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
462 def __init__(self, obj, attribs):
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
463 self.obj = obj
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
464 self.attribs = attribs
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
465 self.save()
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
466 def save(self):
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
467 for attrib in self.attribs:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
468 setattr(self, attrib, getattr(self.obj, attrib))
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
469 def restore(self):
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
470 for attrib in self.attribs:
febfdc79550b moved repository to Assembla
catherine@DellZilla.myhome.westell.com
parents:
diff changeset
471 setattr(self.obj, attrib, getattr(self, attrib))