Mercurial > sqlpython

annotate cmd2.py @ 27:ca6f34be3397

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working on ed
author devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
date Wed, 19 Dec 2007 16:22:53 -0500
parents bb3fb24b6f5f
children a6f68b25ae16
rev   line source
20
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1 """Variant on standard library's cmd with extra features:
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2
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3 Searchable command history
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4 Multi-line commands
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5 Case-insensitive commands
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6 Special-character shortcut commands
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7 Load commands from file
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8 Settable environment parameters
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9
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10 still to do:
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11 edit
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12 >
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13 """
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14 import cmd, re, os
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15
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16 class Cmd(cmd.Cmd):
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17 caseInsensitive = True
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18 multilineCommands = []
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19 continuationPrompt = '> '
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20 shortcuts = {'?': 'help', '!': 'shell', '@': 'load'}
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21 excludeFromHistory = '''run r list l history hi ed li eof'''.split()
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22 defaultExtension = 'txt'
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23 defaultFileName = 'command.txt'
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24 editor = os.environ.get('EDITOR') or ''
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25 settable = ['prompt', 'continuationPrompt', 'defaultFileName', 'editor']
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26 terminators = ';\n'
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27 def do_cmdenvironment(self, args):
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28 self.stdout.write("""
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29 Commands are %(casesensitive)scase-sensitive.
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30 Commands may be terminated with: %(terminators)s
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31 Settable parameters: %(settable)s
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32 """ %
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33 { 'casesensitive': 'not ' if self.caseInsensitive else '',
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34 'terminators': ' '.join(self.terminators),
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35 'settable': ' '.join(self.settable)
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36 })
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37
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38 def __init__(self, *args, **kwargs):
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39 cmd.Cmd.__init__(self, *args, **kwargs)
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40 self.history = History()
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41
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42 def precmd(self, line):
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43 """Hook method executed just before the command line is
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44 interpreted, but after the input prompt is generated and issued.
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45
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46 Makes commands case-insensitive (but unfortunately does not alter command completion).
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47 """
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48 try:
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49 (command, args) = line.split(None,1)
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50 except ValueError:
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51 (command, args) = line, ''
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52 if self.caseInsensitive:
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53 command = command.lower()
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54 statement = ' '.join([command, args])
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55 if (not self.multilineCommands) or (command not in self.multilineCommands):
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56 return statement
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57 return self.finishStatement(statement)
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58
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59 def postcmd(self, stop, line):
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60 """Hook method executed just after a command dispatch is finished."""
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61 try:
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62 command = line.split(None,1)[0].lower()
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63 if command not in self.excludeFromHistory:
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64 self.history.append(line)
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65 finally:
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66 return stop
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67
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68 def finishStatement(self, firstline):
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69 statement = firstline
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70 while not self.statementHasEnded(statement):
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71 statement = '%s\n%s' % (statement, self.pseudo_raw_input(self.continuationPrompt))
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72 return statement
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73 # assembling a list of lines and joining them at the end would be faster,
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74 # but statementHasEnded needs a string arg; anyway, we're getting
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75 # user input and users are slow.
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76
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77 def pseudo_raw_input(self, prompt):
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78 """copied from cmd's cmdloop; like raw_input, but accounts for changed stdin, stdout"""
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79
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80 if self.use_rawinput:
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81 try:
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82 line = raw_input(prompt)
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83 except EOFError:
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84 line = 'EOF'
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85 else:
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86 self.stdout.write(prompt)
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87 self.stdout.flush()
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88 line = self.stdin.readline()
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89 if not len(line):
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90 line = 'EOF'
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91 else:
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92 line = line[:-1] # chop \n
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93 return line
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94
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95 def do_EOF(self, arg):
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96 return True
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97 do_eof = do_EOF
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98
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99 statementEndPattern = re.compile(r'[%s]\s*$' % terminators)
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100 def statementHasEnded(self, lines):
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101 return bool(self.statementEndPattern.search(lines))
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102
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103 def clean(self, s):
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104 """cleans up a string"""
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105 if self.caseInsensitive:
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106 return s.strip().lower()
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107 return s.strip()
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108
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109 def parseline(self, line):
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110 """Parse the line into a command name and a string containing
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111 the arguments. Returns a tuple containing (command, args, line).
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112 'command' and 'args' may be None if the line couldn't be parsed.
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113 """
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114 line = line.strip()
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115 if not line:
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116 return None, None, line
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117 shortcut = self.shortcuts.get(line[0])
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118 if shortcut and hasattr(self, 'do_%s' % shortcut):
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119 line = '%s %s' % (shortcut, line[1:])
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120 i, n = 0, len(line)
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121 while i < n and line[i] in self.identchars: i = i+1
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122 cmd, arg = line[:i], line[i:].strip().strip(self.terminators)
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123 return cmd, arg, line
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124
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125 def showParam(self, param):
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126 param = self.clean(param)
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devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 24
diff changeset
127 if param in self.settable:
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parents: 24
diff changeset
128 val = getattr(self, param)
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devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 24
diff changeset
129 self.stdout.write('%s: %s\n' % (param, str(getattr(self, param))))
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devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 24
diff changeset
130
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devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 24
diff changeset
131 def do_show(self, arg):
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devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 24
diff changeset
132 'Shows value of a parameter'
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devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 24
diff changeset
133 if arg.strip():
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devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 24
diff changeset
134 self.showParam(arg)
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devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 24
diff changeset
135 else:
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devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 24
diff changeset
136 for param in self.settable:
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devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 24
diff changeset
137 self.showParam(param)
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devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 24
diff changeset
138
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devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 24
diff changeset
139 def do_set(self, arg):
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devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 24
diff changeset
140 'Sets a parameter'
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devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 24
diff changeset
141 try:
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devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 24
diff changeset
142 paramName, val = arg.split(None, 1)
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devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 24
diff changeset
143 paramName = self.clean(paramName)
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devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 24
diff changeset
144 if paramName not in self.settable:
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devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 24
diff changeset
145 raise NotSettableError
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devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 24
diff changeset
146 currentVal = getattr(self, paramName)
26
bb3fb24b6f5f settables ironed out
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 25
diff changeset
147 val = cast(currentVal, val.strip(self.terminators))
25
c99853267a44 introducing parameters
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 24
diff changeset
148 setattr(self, paramName, val)
26
bb3fb24b6f5f settables ironed out
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 25
diff changeset
149 self.stdout.write('%s - was: %s\nnow: %s\n' % (paramName, currentVal, val))
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devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 25
diff changeset
150 except (ValueError, AttributeError, NotSettableError):
25
c99853267a44 introducing parameters
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 24
diff changeset
151 self.do_show(arg)
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parents: 24
diff changeset
152
20
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devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 19
diff changeset
153 def do_shell(self, arg):
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devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 19
diff changeset
154 'execute a command as if at the OS prompt.'
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devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 19
diff changeset
155 os.system(arg)
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parents: 19
diff changeset
156
16
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devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents:
diff changeset
157 def do_history(self, arg):
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devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents:
diff changeset
158 """history [arg]: lists past commands issued
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devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents:
diff changeset
159
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devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents:
diff changeset
160 no arg -> list all
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devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents:
diff changeset
161 arg is integer -> list one history item, by index
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devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents:
diff changeset
162 arg is string -> string search
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devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents:
diff changeset
163 arg is /enclosed in forward-slashes/ -> regular expression search
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devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents:
diff changeset
164 """
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devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents:
diff changeset
165 if arg:
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devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents:
diff changeset
166 history = self.history.get(arg)
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devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents:
diff changeset
167 else:
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devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents:
diff changeset
168 history = self.history
2776755a3a7e beginning separation of cmd2
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents:
diff changeset
169 for hi in history:
21
8b55aaa52ce9 working on load, and preserving stdin/out
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 20
diff changeset
170 self.stdout.write(hi.pr())
16
2776755a3a7e beginning separation of cmd2
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents:
diff changeset
171 def last_matching(self, arg):
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devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents:
diff changeset
172 try:
2776755a3a7e beginning separation of cmd2
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents:
diff changeset
173 if arg:
2776755a3a7e beginning separation of cmd2
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents:
diff changeset
174 return self.history.get(arg)[-1]
2776755a3a7e beginning separation of cmd2
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents:
diff changeset
175 else:
2776755a3a7e beginning separation of cmd2
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents:
diff changeset
176 return self.history[-1]
2776755a3a7e beginning separation of cmd2
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents:
diff changeset
177 except:
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devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents:
diff changeset
178 return None
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devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents:
diff changeset
179 def do_list(self, arg):
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devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents:
diff changeset
180 """list [arg]: lists last command issued
2776755a3a7e beginning separation of cmd2
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents:
diff changeset
181
2776755a3a7e beginning separation of cmd2
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents:
diff changeset
182 no arg -> list absolute last
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devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents:
diff changeset
183 arg is integer -> list one history item, by index
2776755a3a7e beginning separation of cmd2
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents:
diff changeset
184 - arg, arg - (integer) -> list up to or after #arg
2776755a3a7e beginning separation of cmd2
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents:
diff changeset
185 arg is string -> list last command matching string search
2776755a3a7e beginning separation of cmd2
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents:
diff changeset
186 arg is /enclosed in forward-slashes/ -> regular expression search
2776755a3a7e beginning separation of cmd2
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents:
diff changeset
187 """
2776755a3a7e beginning separation of cmd2
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents:
diff changeset
188 try:
21
8b55aaa52ce9 working on load, and preserving stdin/out
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 20
diff changeset
189 self.stdout.write(self.last_matching(arg).pr())
16
2776755a3a7e beginning separation of cmd2
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents:
diff changeset
190 except:
2776755a3a7e beginning separation of cmd2
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents:
diff changeset
191 pass
2776755a3a7e beginning separation of cmd2
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents:
diff changeset
192 do_hi = do_history
2776755a3a7e beginning separation of cmd2
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents:
diff changeset
193 do_l = do_list
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devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents:
diff changeset
194 do_li = do_list
21
8b55aaa52ce9 working on load, and preserving stdin/out
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 20
diff changeset
195
27
ca6f34be3397 working on ed
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 26
diff changeset
196 def do_ed(self, arg):
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devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 26
diff changeset
197 'ed [N]: brings up SQL from N commands ago in text editor, and puts result in SQL buffer.'
ca6f34be3397 working on ed
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 26
diff changeset
198 if not self.editor:
ca6f34be3397 working on ed
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 26
diff changeset
199 self.do_show('editor')
ca6f34be3397 working on ed
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 26
diff changeset
200 return
ca6f34be3397 working on ed
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 26
diff changeset
201 buffer = self.last_matching(arg)
ca6f34be3397 working on ed
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 26
diff changeset
202 if not buffer:
ca6f34be3397 working on ed
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 26
diff changeset
203 print 'Nothing appropriate in buffer to edit.'
ca6f34be3397 working on ed
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 26
diff changeset
204 return
ca6f34be3397 working on ed
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 26
diff changeset
205 f = open(self.defaultFileName, 'w')
ca6f34be3397 working on ed
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 26
diff changeset
206 f.write(buffer)
ca6f34be3397 working on ed
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 26
diff changeset
207 f.close()
ca6f34be3397 working on ed
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 26
diff changeset
208 os.system('%s %s' % (self.editor, self.defaultFileName))
ca6f34be3397 working on ed
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 26
diff changeset
209 self.load(self.defaultFileName)
ca6f34be3397 working on ed
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 26
diff changeset
210 do_edit = do_ed
ca6f34be3397 working on ed
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 26
diff changeset
211
ca6f34be3397 working on ed
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 26
diff changeset
212 def do_save(self, fname=None):
ca6f34be3397 working on ed
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 26
diff changeset
213 """Saves most recent command to a file."""
ca6f34be3397 working on ed
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 26
diff changeset
214
ca6f34be3397 working on ed
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 26
diff changeset
215 if fname is None:
ca6f34be3397 working on ed
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 26
diff changeset
216 fname = self.defaultFileName
ca6f34be3397 working on ed
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 26
diff changeset
217 try:
ca6f34be3397 working on ed
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 26
diff changeset
218 f = open(fname, 'w')
ca6f34be3397 working on ed
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 26
diff changeset
219 f.write(self.history[-1])
ca6f34be3397 working on ed
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 26
diff changeset
220 f.close()
ca6f34be3397 working on ed
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 26
diff changeset
221 except Exception, e:
ca6f34be3397 working on ed
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 26
diff changeset
222 print 'Error saving %s: %s' % (fname, str(e))
ca6f34be3397 working on ed
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 26
diff changeset
223
ca6f34be3397 working on ed
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 26
diff changeset
224 def do_load(self, fname=None):
21
8b55aaa52ce9 working on load, and preserving stdin/out
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 20
diff changeset
225 """Runs command(s) from a file."""
27
ca6f34be3397 working on ed
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 26
diff changeset
226 if fname is None:
ca6f34be3397 working on ed
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 26
diff changeset
227 fname = self.defaultFileName
24
7a89805a47b1 load cleaned up
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 23
diff changeset
228 keepstate = Statekeeper(self, ('stdin','use_rawinput','prompt','continuationPrompt'))
21
8b55aaa52ce9 working on load, and preserving stdin/out
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 20
diff changeset
229 try:
8b55aaa52ce9 working on load, and preserving stdin/out
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 20
diff changeset
230 self.stdin = open(fname, 'r')
8b55aaa52ce9 working on load, and preserving stdin/out
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 20
diff changeset
231 except IOError, e:
8b55aaa52ce9 working on load, and preserving stdin/out
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 20
diff changeset
232 try:
8b55aaa52ce9 working on load, and preserving stdin/out
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 20
diff changeset
233 self.stdin = open('%s.%s' % (fname, self.defaultExtension), 'r')
24
7a89805a47b1 load cleaned up
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 23
diff changeset
234 self.use_rawinput = False
7a89805a47b1 load cleaned up
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 23
diff changeset
235 self.prompt = self.continuationPrompt = ''
7a89805a47b1 load cleaned up
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 23
diff changeset
236 self.cmdloop()
7a89805a47b1 load cleaned up
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 23
diff changeset
237 self.stdin.close()
7a89805a47b1 load cleaned up
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 23
diff changeset
238 self.lastcmd = ''
7a89805a47b1 load cleaned up
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 23
diff changeset
239 except IOError:
21
8b55aaa52ce9 working on load, and preserving stdin/out
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 20
diff changeset
240 print 'Problem opening file %s: \n%s' % (fname, e)
24
7a89805a47b1 load cleaned up
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 23
diff changeset
241 finally:
7a89805a47b1 load cleaned up
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 23
diff changeset
242 keepstate.restore()
7a89805a47b1 load cleaned up
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 23
diff changeset
243
20
d6d64c2e3b98 shortcuts
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 19
diff changeset
244 class HistoryItem(str):
d6d64c2e3b98 shortcuts
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 19
diff changeset
245 def __init__(self, instr):
d6d64c2e3b98 shortcuts
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 19
diff changeset
246 str.__init__(self, instr)
d6d64c2e3b98 shortcuts
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 19
diff changeset
247 self.lowercase = self.lower()
d6d64c2e3b98 shortcuts
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 19
diff changeset
248 self.idx = None
d6d64c2e3b98 shortcuts
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 19
diff changeset
249 def pr(self):
21
8b55aaa52ce9 working on load, and preserving stdin/out
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 20
diff changeset
250 return '-------------------------[%d]\n%s\n' % (self.idx, str(self))
20
d6d64c2e3b98 shortcuts
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 19
diff changeset
251
d6d64c2e3b98 shortcuts
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 19
diff changeset
252 class History(list):
d6d64c2e3b98 shortcuts
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 19
diff changeset
253 rangeFrom = re.compile(r'^([\d])+\s*\-$')
d6d64c2e3b98 shortcuts
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 19
diff changeset
254 def append(self, new):
d6d64c2e3b98 shortcuts
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 19
diff changeset
255 new = HistoryItem(new)
d6d64c2e3b98 shortcuts
devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 19
diff changeset
256 list.append(self, new)
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257 new.idx = len(self)
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258 def extend(self, new):
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259 for n in new:
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260 self.append(n)
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261 def get(self, getme):
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262 try:
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263 getme = int(getme)
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264 if getme < 0:
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265 return self[:(-1 * getme)]
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266 else:
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267 return [self[getme-1]]
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268 except IndexError:
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269 return []
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270 except (ValueError, TypeError):
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271 getme = getme.strip()
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272 mtch = self.rangeFrom.search(getme)
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273 if mtch:
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274 return self[(int(mtch.group(1))-1):]
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diff changeset
275 if getme.startswith(r'/') and getme.endswith(r'/'):
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276 finder = re.compile(getme[1:-1], re.DOTALL | re.MULTILINE | re.IGNORECASE)
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277 def isin(hi):
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278 return finder.search(hi)
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279 else:
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280 def isin(hi):
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281 return (getme.lower() in hi.lowercase)
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282 return [itm for itm in self if isin(itm)]
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283
25
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284 class NotSettableError(Exception):
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285 None
16
2776755a3a7e beginning separation of cmd2
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parents:
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286
26
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diff changeset
287 def cast(current, new):
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288 """Tries to force a new value into the same type as the current."""
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289 typ = type(current)
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290 print type(new)
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291 if typ == bool:
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292 new = new.lower()
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293 print new
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294 try:
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295 print new == 'on'
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296 if (new=='on') or (new[0] in ('y','t')):
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297 return True
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parents: 25
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298 try:
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299 return bool(int(new))
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parents: 25
diff changeset
300 except ValueError:
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parents: 25
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301 pass
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302 return False
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parents: 25
diff changeset
303 except TypeError:
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parents: 25
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304 pass
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parents: 25
diff changeset
305 try:
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306 return typ(new)
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parents: 25
diff changeset
307 except:
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parents: 25
diff changeset
308 print "Problem setting parameter (now %s) to %s; incorrect type?" % (current, new)
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devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
parents: 25
diff changeset
309 return current
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parents: 25
diff changeset
310
25
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devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil
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diff changeset
311 class Statekeeper(object):
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parents: 24
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312 def __init__(self, obj, attribs):
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diff changeset
313 self.obj = obj
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314 self.attribs = attribs
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diff changeset
315 self.save()
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316 def save(self):
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parents: 24
diff changeset
317 for attrib in self.attribs:
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parents: 24
diff changeset
318 setattr(self, attrib, getattr(self.obj, attrib))
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parents: 24
diff changeset
319 def restore(self):
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parents: 24
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320 for attrib in self.attribs:
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parents: 24
diff changeset
321 setattr(self.obj, attrib, getattr(self, attrib))