Mercurial > sqlpython
annotate cmd2.py @ 19:25f22e742a68
statement ends fixed
author | devlinjs@FA7CZA6N1254998.wrightpatterson.afmc.ds.af.mil |
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date | Wed, 19 Dec 2007 11:30:13 -0500 |
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children | d6d64c2e3b98 |
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1 import cmd, re |
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2 |
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3 class HistoryItem(str): |
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4 def __init__(self, instr): |
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5 str.__init__(self, instr) |
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6 self.lowercase = self.lower() |
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7 self.idx = None |
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8 def pr(self): |
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9 print '-------------------------[%d]' % (self.idx) |
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10 print self |
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11 |
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12 class History(list): |
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13 rangeFrom = re.compile(r'^([\d])+\s*\-$') |
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14 def append(self, new): |
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15 new = HistoryItem(new) |
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16 list.append(self, new) |
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17 new.idx = len(self) |
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18 def extend(self, new): |
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19 for n in new: |
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20 self.append(n) |
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21 def get(self, getme): |
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22 try: |
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23 getme = int(getme) |
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24 if getme < 0: |
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25 return self[:(-1 * getme)] |
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26 else: |
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27 return [self[getme-1]] |
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28 except IndexError: |
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29 return [] |
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30 except (ValueError, TypeError): |
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31 getme = getme.strip() |
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32 mtch = self.rangeFrom.search(getme) |
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33 if mtch: |
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34 return self[(int(mtch.group(1))-1):] |
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35 if getme.startswith(r'/') and getme.endswith(r'/'): |
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36 finder = re.compile(getme[1:-1], re.DOTALL | re.MULTILINE | re.IGNORECASE) |
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37 def isin(hi): |
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38 return finder.search(hi) |
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39 else: |
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40 def isin(hi): |
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41 return (getme.lower() in hi.lowercase) |
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42 return [itm for itm in self if isin(itm)] |
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43 |
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44 class Cmd(cmd.Cmd): |
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45 excludeFromHistory = '''run r list l history hi ed li'''.split() |
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46 caseInsensitive = True |
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47 multilineCommands = [] |
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48 continuationPrompt = '> ' |
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49 def __init__(self, *args, **kwargs): |
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50 cmd.Cmd.__init__(self, *args, **kwargs) |
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51 self.history = History() |
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52 |
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53 def precmd(self, line): |
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54 """Hook method executed just before the command line is |
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55 interpreted, but after the input prompt is generated and issued. |
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56 |
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57 Makes commands case-insensitive (but unfortunately does not alter command completion). |
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58 """ |
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59 try: |
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60 (command, args) = line.split(None,1) |
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61 except ValueError: |
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62 (command, args) = line, '' |
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63 if self.caseInsensitive: |
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64 command = command.lower() |
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65 statement = ' '.join([command, args]) |
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66 if (not self.multilineCommands) or (command not in self.multilineCommands): |
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67 return statement |
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68 return self.finishStatement(statement) |
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69 |
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70 def postcmd(self, stop, line): |
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71 """Hook method executed just after a command dispatch is finished.""" |
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72 try: |
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73 command = line.split(None,1)[0].lower() |
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74 if command not in self.excludeFromHistory: |
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75 self.history.append(line) |
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76 finally: |
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77 return stop |
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78 |
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79 def finishStatement(self, firstline): |
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80 statement = firstline |
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81 while not self.statementHasEnded(statement): |
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82 statement = '%s\n%s' % (statement, raw_input(self.continuationPrompt)) |
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83 return statement |
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84 # assembling a list of lines and joining them at the end would be faster, |
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85 # but statementHasEnded needs a string arg; anyway, we're getting |
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86 # user input and users are slow. |
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87 |
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88 statementEndPattern = re.compile(r'[\n;]\s*$') |
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89 def statementHasEnded(self, lines): |
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90 """This version lets statements end with ; or with a blank line. |
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91 Override for your own needs.""" |
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92 return bool(self.statementEndPattern.search(lines)) |
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93 |
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94 def do_history(self, arg): |
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95 """history [arg]: lists past commands issued |
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96 |
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97 no arg -> list all |
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98 arg is integer -> list one history item, by index |
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99 arg is string -> string search |
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100 arg is /enclosed in forward-slashes/ -> regular expression search |
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101 """ |
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102 if arg: |
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103 history = self.history.get(arg) |
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104 else: |
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105 history = self.history |
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106 for hi in history: |
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107 hi.pr() |
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108 def last_matching(self, arg): |
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109 try: |
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110 if arg: |
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111 return self.history.get(arg)[-1] |
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112 else: |
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113 return self.history[-1] |
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114 except: |
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115 return None |
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116 def do_list(self, arg): |
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117 """list [arg]: lists last command issued |
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118 |
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119 no arg -> list absolute last |
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120 arg is integer -> list one history item, by index |
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121 - arg, arg - (integer) -> list up to or after #arg |
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122 arg is string -> list last command matching string search |
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123 arg is /enclosed in forward-slashes/ -> regular expression search |
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124 """ |
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125 try: |
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126 self.last_matching(arg).pr() |
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127 except: |
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128 pass |
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129 do_hi = do_history |
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130 do_l = do_list |
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131 do_li = do_list |
17
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132 |
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133 |
16
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134 |