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@@ -1,2047 +1,2047 b'' | |||
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1 | 1 | # -*- coding: utf-8 -*- |
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2 | 2 | """ |
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3 | 3 | IPython -- An enhanced Interactive Python |
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4 | 4 | |
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5 | 5 | Requires Python 2.1 or newer. |
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6 | 6 | |
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7 | 7 | This file contains all the classes and helper functions specific to IPython. |
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8 | 8 | |
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9 |
$Id: iplib.py 80 |
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9 | $Id: iplib.py 807 2005-09-07 01:55:33Z fperez $ | |
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10 | 10 | """ |
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11 | 11 | |
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12 | 12 | #***************************************************************************** |
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13 | 13 | # Copyright (C) 2001 Janko Hauser <jhauser@zscout.de> and |
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14 | 14 | # Copyright (C) 2001-2004 Fernando Perez. <fperez@colorado.edu> |
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15 | 15 | # |
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16 | 16 | # Distributed under the terms of the BSD License. The full license is in |
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17 | 17 | # the file COPYING, distributed as part of this software. |
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18 | 18 | # |
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19 | 19 | # Note: this code originally subclassed code.InteractiveConsole from the |
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20 | 20 | # Python standard library. Over time, much of that class has been copied |
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21 | 21 | # verbatim here for modifications which could not be accomplished by |
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22 | 22 | # subclassing. The Python License (sec. 2) allows for this, but it's always |
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23 | 23 | # nice to acknowledge credit where credit is due. |
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24 | 24 | #***************************************************************************** |
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25 | 25 | |
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26 | 26 | #**************************************************************************** |
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27 | 27 | # Modules and globals |
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28 | 28 | |
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29 | 29 | from __future__ import generators # for 2.2 backwards-compatibility |
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30 | 30 | |
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31 | 31 | from IPython import Release |
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32 | 32 | __author__ = '%s <%s>\n%s <%s>' % \ |
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33 | 33 | ( Release.authors['Janko'] + Release.authors['Fernando'] ) |
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34 | 34 | __license__ = Release.license |
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35 | 35 | __version__ = Release.version |
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36 | 36 | |
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37 | 37 | # Python standard modules |
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38 | 38 | import __main__ |
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39 | 39 | import __builtin__ |
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40 | 40 | import exceptions |
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41 | 41 | import keyword |
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42 | 42 | import new |
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43 | 43 | import os, sys, shutil |
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44 | 44 | import code, glob, types, re |
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45 | 45 | import string, StringIO |
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46 | 46 | import inspect, pydoc |
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47 | 47 | import bdb, pdb |
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48 | 48 | import UserList # don't subclass list so this works with Python2.1 |
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49 | 49 | from pprint import pprint, pformat |
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50 | 50 | import cPickle as pickle |
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51 | 51 | import traceback |
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52 | 52 | |
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53 | 53 | # IPython's own modules |
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54 | 54 | import IPython |
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55 | 55 | from IPython import OInspect,PyColorize,ultraTB |
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56 | 56 | from IPython.ultraTB import ColorScheme,ColorSchemeTable # too long names |
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57 | 57 | from IPython.Logger import Logger |
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58 | 58 | from IPython.Magic import Magic,magic2python,shlex_split |
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59 | 59 | from IPython.usage import cmd_line_usage,interactive_usage |
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60 | 60 | from IPython.Struct import Struct |
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61 | 61 | from IPython.Itpl import Itpl,itpl,printpl,ItplNS,itplns |
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62 | 62 | from IPython.FakeModule import FakeModule |
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63 | 63 | from IPython.background_jobs import BackgroundJobManager |
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64 | 64 | from IPython.genutils import * |
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65 | 65 | |
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66 | 66 | # Global pointer to the running |
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67 | 67 | |
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68 | 68 | # store the builtin raw_input globally, and use this always, in case user code |
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69 | 69 | # overwrites it (like wx.py.PyShell does) |
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70 | 70 | raw_input_original = raw_input |
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71 | 71 | |
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72 | 72 | #**************************************************************************** |
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73 | 73 | # Some utility function definitions |
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74 | 74 | |
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75 | 75 | class Bunch: pass |
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76 | 76 | |
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77 | 77 | def esc_quotes(strng): |
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78 | 78 | """Return the input string with single and double quotes escaped out""" |
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79 | 79 | |
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80 | 80 | return strng.replace('"','\\"').replace("'","\\'") |
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81 | 81 | |
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82 | 82 | def import_fail_info(mod_name,fns=None): |
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83 | 83 | """Inform load failure for a module.""" |
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84 | 84 | |
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85 | 85 | if fns == None: |
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86 | 86 | warn("Loading of %s failed.\n" % (mod_name,)) |
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87 | 87 | else: |
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88 | 88 | warn("Loading of %s from %s failed.\n" % (fns,mod_name)) |
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89 | 89 | |
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90 | 90 | def qw_lol(indata): |
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91 | 91 | """qw_lol('a b') -> [['a','b']], |
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92 | 92 | otherwise it's just a call to qw(). |
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93 | 93 | |
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94 | 94 | We need this to make sure the modules_some keys *always* end up as a |
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95 | 95 | list of lists.""" |
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96 | 96 | |
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97 | 97 | if type(indata) in StringTypes: |
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98 | 98 | return [qw(indata)] |
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99 | 99 | else: |
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100 | 100 | return qw(indata) |
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101 | 101 | |
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102 | 102 | def ipmagic(arg_s): |
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103 | 103 | """Call a magic function by name. |
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104 | 104 | |
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105 | 105 | Input: a string containing the name of the magic function to call and any |
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106 | 106 | additional arguments to be passed to the magic. |
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107 | 107 | |
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108 | 108 | ipmagic('name -opt foo bar') is equivalent to typing at the ipython |
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109 | 109 | prompt: |
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110 | 110 | |
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111 | 111 | In[1]: %name -opt foo bar |
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112 | 112 | |
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113 | 113 | To call a magic without arguments, simply use ipmagic('name'). |
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114 | 114 | |
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115 | 115 | This provides a proper Python function to call IPython's magics in any |
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116 | 116 | valid Python code you can type at the interpreter, including loops and |
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117 | 117 | compound statements. It is added by IPython to the Python builtin |
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118 | 118 | namespace upon initialization.""" |
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119 | 119 | |
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120 | 120 | args = arg_s.split(' ',1) |
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121 | 121 | magic_name = args[0] |
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122 | 122 | if magic_name.startswith(__IPYTHON__.ESC_MAGIC): |
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123 | 123 | magic_name = magic_name[1:] |
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124 | 124 | try: |
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125 | 125 | magic_args = args[1] |
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126 | 126 | except IndexError: |
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127 | 127 | magic_args = '' |
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128 | 128 | fn = getattr(__IPYTHON__,'magic_'+magic_name,None) |
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129 | 129 | if fn is None: |
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130 | 130 | error("Magic function `%s` not found." % magic_name) |
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131 | 131 | else: |
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132 | 132 | magic_args = __IPYTHON__.var_expand(magic_args) |
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133 | 133 | return fn(magic_args) |
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134 | 134 | |
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135 | 135 | def ipalias(arg_s): |
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136 | 136 | """Call an alias by name. |
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137 | 137 | |
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138 | 138 | Input: a string containing the name of the alias to call and any |
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139 | 139 | additional arguments to be passed to the magic. |
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140 | 140 | |
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141 | 141 | ipalias('name -opt foo bar') is equivalent to typing at the ipython |
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142 | 142 | prompt: |
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143 | 143 | |
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144 | 144 | In[1]: name -opt foo bar |
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145 | 145 | |
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146 | 146 | To call an alias without arguments, simply use ipalias('name'). |
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147 | 147 | |
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148 | 148 | This provides a proper Python function to call IPython's aliases in any |
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149 | 149 | valid Python code you can type at the interpreter, including loops and |
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150 | 150 | compound statements. It is added by IPython to the Python builtin |
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151 | 151 | namespace upon initialization.""" |
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152 | 152 | |
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153 | 153 | args = arg_s.split(' ',1) |
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154 | 154 | alias_name = args[0] |
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155 | 155 | try: |
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156 | 156 | alias_args = args[1] |
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157 | 157 | except IndexError: |
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158 | 158 | alias_args = '' |
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159 | 159 | if alias_name in __IPYTHON__.alias_table: |
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160 | 160 | __IPYTHON__.call_alias(alias_name,alias_args) |
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161 | 161 | else: |
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162 | 162 | error("Alias `%s` not found." % alias_name) |
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163 | 163 | |
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164 | 164 | #----------------------------------------------------------------------------- |
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165 | 165 | # Local use classes |
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166 | 166 | try: |
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167 | 167 | from IPython import FlexCompleter |
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168 | 168 | |
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169 | 169 | class MagicCompleter(FlexCompleter.Completer): |
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170 | 170 | """Extension of the completer class to work on %-prefixed lines.""" |
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171 | 171 | |
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172 | 172 | def __init__(self,shell,namespace=None,omit__names=0,alias_table=None): |
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173 | 173 | """MagicCompleter() -> completer |
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174 | 174 | |
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175 | 175 | Return a completer object suitable for use by the readline library |
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176 | 176 | via readline.set_completer(). |
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177 | 177 | |
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178 | 178 | Inputs: |
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179 | 179 | |
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180 | 180 | - shell: a pointer to the ipython shell itself. This is needed |
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181 | 181 | because this completer knows about magic functions, and those can |
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182 | 182 | only be accessed via the ipython instance. |
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183 | 183 | |
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184 | 184 | - namespace: an optional dict where completions are performed. |
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185 | 185 | |
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186 | 186 | - The optional omit__names parameter sets the completer to omit the |
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187 | 187 | 'magic' names (__magicname__) for python objects unless the text |
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188 | 188 | to be completed explicitly starts with one or more underscores. |
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189 | 189 | |
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190 | 190 | - If alias_table is supplied, it should be a dictionary of aliases |
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191 | 191 | to complete. """ |
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192 | 192 | |
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193 | 193 | FlexCompleter.Completer.__init__(self,namespace) |
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194 | 194 | self.magic_prefix = shell.name+'.magic_' |
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195 | 195 | self.magic_escape = shell.ESC_MAGIC |
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196 | 196 | self.readline = FlexCompleter.readline |
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197 | 197 | delims = self.readline.get_completer_delims() |
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198 | 198 | delims = delims.replace(self.magic_escape,'') |
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199 | 199 | self.readline.set_completer_delims(delims) |
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200 | 200 | self.get_line_buffer = self.readline.get_line_buffer |
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201 | 201 | self.omit__names = omit__names |
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202 | 202 | self.merge_completions = shell.rc.readline_merge_completions |
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203 | 203 | |
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204 | 204 | if alias_table is None: |
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205 | 205 | alias_table = {} |
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206 | 206 | self.alias_table = alias_table |
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207 | 207 | # Regexp to split filenames with spaces in them |
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208 | 208 | self.space_name_re = re.compile(r'([^\\] )') |
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209 | 209 | # Hold a local ref. to glob.glob for speed |
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210 | 210 | self.glob = glob.glob |
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211 | 211 | # Special handling of backslashes needed in win32 platforms |
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212 | 212 | if sys.platform == "win32": |
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213 | 213 | self.clean_glob = self._clean_glob_win32 |
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214 | 214 | else: |
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215 | 215 | self.clean_glob = self._clean_glob |
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216 | 216 | self.matchers = [self.python_matches, |
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217 | 217 | self.file_matches, |
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218 | 218 | self.alias_matches, |
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219 | 219 | self.python_func_kw_matches] |
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220 | 220 | |
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221 | 221 | # Code contributed by Alex Schmolck, for ipython/emacs integration |
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222 | 222 | def all_completions(self, text): |
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223 | 223 | """Return all possible completions for the benefit of emacs.""" |
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224 | 224 | |
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225 | 225 | completions = [] |
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226 | 226 | try: |
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227 | 227 | for i in xrange(sys.maxint): |
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228 | 228 | res = self.complete(text, i) |
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229 | 229 | |
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230 | 230 | if not res: break |
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231 | 231 | |
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232 | 232 | completions.append(res) |
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233 | 233 | #XXX workaround for ``notDefined.<tab>`` |
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234 | 234 | except NameError: |
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235 | 235 | pass |
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236 | 236 | return completions |
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237 | 237 | # /end Alex Schmolck code. |
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238 | 238 | |
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239 | 239 | def _clean_glob(self,text): |
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240 | 240 | return self.glob("%s*" % text) |
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241 | 241 | |
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242 | 242 | def _clean_glob_win32(self,text): |
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243 | 243 | return [f.replace("\\","/") |
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244 | 244 | for f in self.glob("%s*" % text)] |
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245 | 245 | |
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246 | 246 | def file_matches(self, text): |
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247 | 247 | """Match filneames, expanding ~USER type strings. |
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248 | 248 | |
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249 | 249 | Most of the seemingly convoluted logic in this completer is an |
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250 | 250 | attempt to handle filenames with spaces in them. And yet it's not |
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251 | 251 | quite perfect, because Python's readline doesn't expose all of the |
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252 | 252 | GNU readline details needed for this to be done correctly. |
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253 | 253 | |
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254 | 254 | For a filename with a space in it, the printed completions will be |
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255 | 255 | only the parts after what's already been typed (instead of the |
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256 | 256 | full completions, as is normally done). I don't think with the |
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257 | 257 | current (as of Python 2.3) Python readline it's possible to do |
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258 | 258 | better.""" |
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259 | 259 | |
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260 | 260 | #print 'Completer->file_matches: <%s>' % text # dbg |
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261 | 261 | |
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262 | 262 | # chars that require escaping with backslash - i.e. chars |
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263 | 263 | # that readline treats incorrectly as delimiters, but we |
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264 | 264 | # don't want to treat as delimiters in filename matching |
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265 | 265 | # when escaped with backslash |
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266 | 266 | |
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267 | 267 | protectables = ' ()[]{}' |
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268 | 268 | |
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269 | 269 | def protect_filename(s): |
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270 | 270 | return "".join([(ch in protectables and '\\' + ch or ch) |
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271 | 271 | for ch in s]) |
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272 | 272 | |
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273 | 273 | lbuf = self.get_line_buffer()[:self.readline.get_endidx()] |
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274 | 274 | open_quotes = 0 # track strings with open quotes |
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275 | 275 | try: |
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276 | 276 | lsplit = shlex_split(lbuf)[-1] |
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277 | 277 | except ValueError: |
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278 | 278 | # typically an unmatched ", or backslash without escaped char. |
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279 | 279 | if lbuf.count('"')==1: |
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280 | 280 | open_quotes = 1 |
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281 | 281 | lsplit = lbuf.split('"')[-1] |
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282 | 282 | elif lbuf.count("'")==1: |
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283 | 283 | open_quotes = 1 |
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284 | 284 | lsplit = lbuf.split("'")[-1] |
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285 | 285 | else: |
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286 | 286 | return None |
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287 | 287 | except IndexError: |
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288 | 288 | # tab pressed on empty line |
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289 | 289 | lsplit = "" |
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290 | 290 | |
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291 | 291 | if lsplit != protect_filename(lsplit): |
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292 | 292 | # if protectables are found, do matching on the whole escaped |
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293 | 293 | # name |
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294 | 294 | has_protectables = 1 |
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295 | 295 | text0,text = text,lsplit |
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296 | 296 | else: |
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297 | 297 | has_protectables = 0 |
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298 | 298 | text = os.path.expanduser(text) |
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299 | 299 | |
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300 | 300 | if text == "": |
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301 | 301 | return [protect_filename(f) for f in self.glob("*")] |
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302 | 302 | |
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303 | 303 | m0 = self.clean_glob(text.replace('\\','')) |
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304 | 304 | if has_protectables: |
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305 | 305 | # If we had protectables, we need to revert our changes to the |
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306 | 306 | # beginning of filename so that we don't double-write the part |
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307 | 307 | # of the filename we have so far |
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308 | 308 | len_lsplit = len(lsplit) |
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309 | 309 | matches = [text0 + protect_filename(f[len_lsplit:]) for f in m0] |
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310 | 310 | else: |
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311 | 311 | if open_quotes: |
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312 | 312 | # if we have a string with an open quote, we don't need to |
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313 | 313 | # protect the names at all (and we _shouldn't_, as it |
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314 | 314 | # would cause bugs when the filesystem call is made). |
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315 | 315 | matches = m0 |
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316 | 316 | else: |
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317 | 317 | matches = [protect_filename(f) for f in m0] |
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318 | 318 | if len(matches) == 1 and os.path.isdir(matches[0]): |
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319 | 319 | # Takes care of links to directories also. Use '/' |
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320 | 320 | # explicitly, even under Windows, so that name completions |
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321 | 321 | # don't end up escaped. |
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322 | 322 | matches[0] += '/' |
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323 | 323 | return matches |
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324 | 324 | |
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325 | 325 | def alias_matches(self, text): |
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326 | 326 | """Match internal system aliases""" |
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327 | 327 | #print 'Completer->alias_matches:',text # dbg |
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328 | 328 | text = os.path.expanduser(text) |
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329 | 329 | aliases = self.alias_table.keys() |
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330 | 330 | if text == "": |
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331 | 331 | return aliases |
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332 | 332 | else: |
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333 | 333 | return [alias for alias in aliases if alias.startswith(text)] |
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334 | 334 | |
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335 | 335 | def python_matches(self,text): |
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336 | 336 | """Match attributes or global python names""" |
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337 | 337 | #print 'Completer->python_matches' # dbg |
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338 | 338 | if "." in text: |
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339 | 339 | try: |
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340 | 340 | matches = self.attr_matches(text) |
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341 | 341 | if text.endswith('.') and self.omit__names: |
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342 | 342 | if self.omit__names == 1: |
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343 | 343 | # true if txt is _not_ a __ name, false otherwise: |
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344 | 344 | no__name = (lambda txt: |
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345 | 345 | re.match(r'.*\.__.*?__',txt) is None) |
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346 | 346 | else: |
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347 | 347 | # true if txt is _not_ a _ name, false otherwise: |
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348 | 348 | no__name = (lambda txt: |
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349 | 349 | re.match(r'.*\._.*?',txt) is None) |
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350 | 350 | matches = filter(no__name, matches) |
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351 | 351 | except NameError: |
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352 | 352 | # catches <undefined attributes>.<tab> |
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353 | 353 | matches = [] |
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354 | 354 | else: |
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355 | 355 | matches = self.global_matches(text) |
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356 | 356 | # this is so completion finds magics when automagic is on: |
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357 | 357 | if matches == [] and not text.startswith(os.sep): |
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358 | 358 | matches = self.attr_matches(self.magic_prefix+text) |
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359 | 359 | return matches |
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360 | 360 | |
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361 | 361 | def _default_arguments(self, obj): |
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362 | 362 | """Return the list of default arguments of obj if it is callable, |
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363 | 363 | or empty list otherwise.""" |
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364 | 364 | |
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365 | 365 | if not (inspect.isfunction(obj) or inspect.ismethod(obj)): |
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366 | 366 | # for classes, check for __init__,__new__ |
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367 | 367 | if inspect.isclass(obj): |
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368 | 368 | obj = (getattr(obj,'__init__',None) or |
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369 | 369 | getattr(obj,'__new__',None)) |
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370 | 370 | # for all others, check if they are __call__able |
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371 | 371 | elif hasattr(obj, '__call__'): |
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372 | 372 | obj = obj.__call__ |
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373 | 373 | # XXX: is there a way to handle the builtins ? |
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374 | 374 | try: |
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375 | 375 | args,_,_1,defaults = inspect.getargspec(obj) |
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376 | 376 | if defaults: |
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377 | 377 | return args[-len(defaults):] |
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378 | 378 | except TypeError: pass |
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379 | 379 | return [] |
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380 | 380 | |
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381 | 381 | def python_func_kw_matches(self,text): |
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382 | 382 | """Match named parameters (kwargs) of the last open function""" |
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383 | 383 | |
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384 | 384 | if "." in text: # a parameter cannot be dotted |
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385 | 385 | return [] |
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386 | 386 | try: regexp = self.__funcParamsRegex |
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387 | 387 | except AttributeError: |
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388 | 388 | regexp = self.__funcParamsRegex = re.compile(r''' |
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389 | 389 | '.*?' | # single quoted strings or |
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390 | 390 | ".*?" | # double quoted strings or |
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391 | 391 | \w+ | # identifier |
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392 | 392 | \S # other characters |
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393 | 393 | ''', re.VERBOSE | re.DOTALL) |
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394 | 394 | # 1. find the nearest identifier that comes before an unclosed |
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395 | 395 | # parenthesis e.g. for "foo (1+bar(x), pa", the candidate is "foo" |
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396 | 396 | tokens = regexp.findall(self.get_line_buffer()) |
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397 | 397 | tokens.reverse() |
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398 | 398 | iterTokens = iter(tokens); openPar = 0 |
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399 | 399 | for token in iterTokens: |
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400 | 400 | if token == ')': |
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401 | 401 | openPar -= 1 |
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402 | 402 | elif token == '(': |
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403 | 403 | openPar += 1 |
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404 | 404 | if openPar > 0: |
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405 | 405 | # found the last unclosed parenthesis |
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406 | 406 | break |
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407 | 407 | else: |
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408 | 408 | return [] |
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409 | 409 | # 2. Concatenate any dotted names (e.g. "foo.bar" for "foo.bar(x, pa" ) |
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410 | 410 | ids = [] |
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411 | 411 | isId = re.compile(r'\w+$').match |
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412 | 412 | while True: |
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413 | 413 | try: |
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414 | 414 | ids.append(iterTokens.next()) |
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415 | 415 | if not isId(ids[-1]): |
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416 | 416 | ids.pop(); break |
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417 | 417 | if not iterTokens.next() == '.': |
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418 | 418 | break |
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419 | 419 | except StopIteration: |
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420 | 420 | break |
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421 | 421 | # lookup the candidate callable matches either using global_matches |
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422 | 422 | # or attr_matches for dotted names |
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423 | 423 | if len(ids) == 1: |
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424 | 424 | callableMatches = self.global_matches(ids[0]) |
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425 | 425 | else: |
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426 | 426 | callableMatches = self.attr_matches('.'.join(ids[::-1])) |
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427 | 427 | argMatches = [] |
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428 | 428 | for callableMatch in callableMatches: |
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429 | 429 | try: namedArgs = self._default_arguments(eval(callableMatch, |
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430 | 430 | self.namespace)) |
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431 | 431 | except: continue |
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432 | 432 | for namedArg in namedArgs: |
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433 | 433 | if namedArg.startswith(text): |
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434 | 434 | argMatches.append("%s=" %namedArg) |
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435 | 435 | return argMatches |
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436 | 436 | |
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437 | 437 | def complete(self, text, state): |
|
438 | 438 | """Return the next possible completion for 'text'. |
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439 | 439 | |
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440 | 440 | This is called successively with state == 0, 1, 2, ... until it |
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441 | 441 | returns None. The completion should begin with 'text'. """ |
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442 | 442 | |
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443 | 443 | #print '\n*** COMPLETE: <%s> (%s)' % (text,state) # dbg |
|
444 | 444 | magic_escape = self.magic_escape |
|
445 | 445 | magic_prefix = self.magic_prefix |
|
446 | 446 | |
|
447 | 447 | try: |
|
448 | 448 | if text.startswith(magic_escape): |
|
449 | 449 | text = text.replace(magic_escape,magic_prefix) |
|
450 | 450 | elif text.startswith('~'): |
|
451 | 451 | text = os.path.expanduser(text) |
|
452 | 452 | if state == 0: |
|
453 | 453 | # Extend the list of completions with the results of each |
|
454 | 454 | # matcher, so we return results to the user from all |
|
455 | 455 | # namespaces. |
|
456 | 456 | if self.merge_completions: |
|
457 | 457 | self.matches = [] |
|
458 | 458 | for matcher in self.matchers: |
|
459 | 459 | self.matches.extend(matcher(text)) |
|
460 | 460 | else: |
|
461 | 461 | for matcher in self.matchers: |
|
462 | 462 | self.matches = matcher(text) |
|
463 | 463 | if self.matches: |
|
464 | 464 | break |
|
465 | 465 | |
|
466 | 466 | try: |
|
467 | 467 | return self.matches[state].replace(magic_prefix,magic_escape) |
|
468 | 468 | except IndexError: |
|
469 | 469 | return None |
|
470 | 470 | except: |
|
471 | 471 | # If completion fails, don't annoy the user. |
|
472 | 472 | pass |
|
473 | 473 | |
|
474 | 474 | except ImportError: |
|
475 | 475 | pass # no readline support |
|
476 | 476 | |
|
477 | 477 | except KeyError: |
|
478 | 478 | pass # Windows doesn't set TERM, it doesn't matter |
|
479 | 479 | |
|
480 | 480 | |
|
481 | 481 | class InputList(UserList.UserList): |
|
482 | 482 | """Class to store user input. |
|
483 | 483 | |
|
484 | 484 | It's basically a list, but slices return a string instead of a list, thus |
|
485 | 485 | allowing things like (assuming 'In' is an instance): |
|
486 | 486 | |
|
487 | 487 | exec In[4:7] |
|
488 | 488 | |
|
489 | 489 | or |
|
490 | 490 | |
|
491 | 491 | exec In[5:9] + In[14] + In[21:25]""" |
|
492 | 492 | |
|
493 | 493 | def __getslice__(self,i,j): |
|
494 | 494 | return ''.join(UserList.UserList.__getslice__(self,i,j)) |
|
495 | 495 | |
|
496 | 496 | #**************************************************************************** |
|
497 | 497 | # Local use exceptions |
|
498 | 498 | class SpaceInInput(exceptions.Exception): |
|
499 | 499 | pass |
|
500 | 500 | |
|
501 | 501 | #**************************************************************************** |
|
502 | 502 | # Main IPython class |
|
503 | 503 | |
|
504 | 504 | class InteractiveShell(code.InteractiveConsole, Logger, Magic): |
|
505 | 505 | """An enhanced console for Python.""" |
|
506 | 506 | |
|
507 | 507 | def __init__(self,name,usage=None,rc=Struct(opts=None,args=None), |
|
508 | 508 | user_ns = None,banner2='', |
|
509 | 509 | custom_exceptions=((),None)): |
|
510 | 510 | |
|
511 | 511 | # Put a reference to self in builtins so that any form of embedded or |
|
512 | 512 | # imported code can test for being inside IPython. |
|
513 | 513 | __builtin__.__IPYTHON__ = self |
|
514 | 514 | |
|
515 | 515 | # And load into builtins ipmagic/ipalias as well |
|
516 | 516 | __builtin__.ipmagic = ipmagic |
|
517 | 517 | __builtin__.ipalias = ipalias |
|
518 | 518 | |
|
519 | 519 | # Add to __builtin__ other parts of IPython's public API |
|
520 | 520 | __builtin__.ip_set_hook = self.set_hook |
|
521 | 521 | |
|
522 | 522 | # Keep in the builtins a flag for when IPython is active. We set it |
|
523 | 523 | # with setdefault so that multiple nested IPythons don't clobber one |
|
524 | 524 | # another. Each will increase its value by one upon being activated, |
|
525 | 525 | # which also gives us a way to determine the nesting level. |
|
526 | 526 | __builtin__.__dict__.setdefault('__IPYTHON__active',0) |
|
527 | 527 | |
|
528 | 528 | # Inform the user of ipython's fast exit magics. |
|
529 | 529 | _exit = ' Use %Exit or %Quit to exit without confirmation.' |
|
530 | 530 | __builtin__.exit += _exit |
|
531 | 531 | __builtin__.quit += _exit |
|
532 | 532 | |
|
533 | 533 | # Create the namespace where the user will operate: |
|
534 | 534 | |
|
535 | 535 | # FIXME. For some strange reason, __builtins__ is showing up at user |
|
536 | 536 | # level as a dict instead of a module. This is a manual fix, but I |
|
537 | 537 | # should really track down where the problem is coming from. Alex |
|
538 | 538 | # Schmolck reported this problem first. |
|
539 | 539 | |
|
540 | 540 | # A useful post by Alex Martelli on this topic: |
|
541 | 541 | # Re: inconsistent value from __builtins__ |
|
542 | 542 | # Von: Alex Martelli <aleaxit@yahoo.com> |
|
543 | 543 | # Datum: Freitag 01 Oktober 2004 04:45:34 nachmittags/abends |
|
544 | 544 | # Gruppen: comp.lang.python |
|
545 | 545 | # Referenzen: 1 |
|
546 | 546 | |
|
547 | 547 | # Michael Hohn <hohn@hooknose.lbl.gov> wrote: |
|
548 | 548 | # > >>> print type(builtin_check.get_global_binding('__builtins__')) |
|
549 | 549 | # > <type 'dict'> |
|
550 | 550 | # > >>> print type(__builtins__) |
|
551 | 551 | # > <type 'module'> |
|
552 | 552 | # > Is this difference in return value intentional? |
|
553 | 553 | |
|
554 | 554 | # Well, it's documented that '__builtins__' can be either a dictionary |
|
555 | 555 | # or a module, and it's been that way for a long time. Whether it's |
|
556 | 556 | # intentional (or sensible), I don't know. In any case, the idea is that |
|
557 | 557 | # if you need to access the built-in namespace directly, you should start |
|
558 | 558 | # with "import __builtin__" (note, no 's') which will definitely give you |
|
559 | 559 | # a module. Yeah, it's somewhat confusing:-(. |
|
560 | 560 | |
|
561 | 561 | if user_ns is None: |
|
562 | 562 | # Set __name__ to __main__ to better match the behavior of the |
|
563 | 563 | # normal interpreter. |
|
564 | 564 | self.user_ns = {'__name__' :'__main__', |
|
565 | 565 | '__builtins__' : __builtin__, |
|
566 | 566 | } |
|
567 | 567 | else: |
|
568 | 568 | self.user_ns = user_ns |
|
569 | 569 | |
|
570 | 570 | # The user namespace MUST have a pointer to the shell itself. |
|
571 | 571 | self.user_ns[name] = self |
|
572 | 572 | |
|
573 | 573 | # We need to insert into sys.modules something that looks like a |
|
574 | 574 | # module but which accesses the IPython namespace, for shelve and |
|
575 | 575 | # pickle to work interactively. Normally they rely on getting |
|
576 | 576 | # everything out of __main__, but for embedding purposes each IPython |
|
577 | 577 | # instance has its own private namespace, so we can't go shoving |
|
578 | 578 | # everything into __main__. |
|
579 | 579 | |
|
580 | 580 | try: |
|
581 | 581 | main_name = self.user_ns['__name__'] |
|
582 | 582 | except KeyError: |
|
583 | 583 | raise KeyError,'user_ns dictionary MUST have a "__name__" key' |
|
584 | 584 | else: |
|
585 | 585 | #print "pickle hack in place" # dbg |
|
586 | 586 | sys.modules[main_name] = FakeModule(self.user_ns) |
|
587 | 587 | |
|
588 | 588 | # List of input with multi-line handling. |
|
589 | 589 | # Fill its zero entry, user counter starts at 1 |
|
590 | 590 | self.input_hist = InputList(['\n']) |
|
591 | 591 | |
|
592 | 592 | # list of visited directories |
|
593 | 593 | try: |
|
594 | 594 | self.dir_hist = [os.getcwd()] |
|
595 | 595 | except IOError, e: |
|
596 | 596 | self.dir_hist = [] |
|
597 | 597 | |
|
598 | 598 | # dict of output history |
|
599 | 599 | self.output_hist = {} |
|
600 | 600 | |
|
601 | 601 | # dict of names to be treated as system aliases. Each entry in the |
|
602 | 602 | # alias table must be a 2-tuple of the form (N,name), where N is the |
|
603 | 603 | # number of positional arguments of the alias. |
|
604 | 604 | self.alias_table = {} |
|
605 | 605 | |
|
606 | 606 | # dict of things NOT to alias (keywords, builtins and some special magics) |
|
607 | 607 | no_alias = {} |
|
608 | 608 | no_alias_magics = ['cd','popd','pushd','dhist','alias','unalias'] |
|
609 | 609 | for key in keyword.kwlist + no_alias_magics: |
|
610 | 610 | no_alias[key] = 1 |
|
611 | 611 | no_alias.update(__builtin__.__dict__) |
|
612 | 612 | self.no_alias = no_alias |
|
613 | 613 | |
|
614 | 614 | |
|
615 | 615 | # make global variables for user access to these |
|
616 | 616 | self.user_ns['_ih'] = self.input_hist |
|
617 | 617 | self.user_ns['_oh'] = self.output_hist |
|
618 | 618 | self.user_ns['_dh'] = self.dir_hist |
|
619 | 619 | |
|
620 | 620 | # user aliases to input and output histories |
|
621 | 621 | self.user_ns['In'] = self.input_hist |
|
622 | 622 | self.user_ns['Out'] = self.output_hist |
|
623 | 623 | |
|
624 | 624 | # Store the actual shell's name |
|
625 | 625 | self.name = name |
|
626 | 626 | |
|
627 | 627 | # Object variable to store code object waiting execution. This is |
|
628 | 628 | # used mainly by the multithreaded shells, but it can come in handy in |
|
629 | 629 | # other situations. No need to use a Queue here, since it's a single |
|
630 | 630 | # item which gets cleared once run. |
|
631 | 631 | self.code_to_run = None |
|
632 | 632 | |
|
633 | 633 | # Job manager (for jobs run as background threads) |
|
634 | 634 | self.jobs = BackgroundJobManager() |
|
635 | 635 | # Put the job manager into builtins so it's always there. |
|
636 | 636 | __builtin__.jobs = self.jobs |
|
637 | 637 | |
|
638 | 638 | # escapes for automatic behavior on the command line |
|
639 | 639 | self.ESC_SHELL = '!' |
|
640 | 640 | self.ESC_HELP = '?' |
|
641 | 641 | self.ESC_MAGIC = '%' |
|
642 | 642 | self.ESC_QUOTE = ',' |
|
643 | 643 | self.ESC_QUOTE2 = ';' |
|
644 | 644 | self.ESC_PAREN = '/' |
|
645 | 645 | |
|
646 | 646 | # And their associated handlers |
|
647 | 647 | self.esc_handlers = {self.ESC_PAREN:self.handle_auto, |
|
648 | 648 | self.ESC_QUOTE:self.handle_auto, |
|
649 | 649 | self.ESC_QUOTE2:self.handle_auto, |
|
650 | 650 | self.ESC_MAGIC:self.handle_magic, |
|
651 | 651 | self.ESC_HELP:self.handle_help, |
|
652 | 652 | self.ESC_SHELL:self.handle_shell_escape, |
|
653 | 653 | } |
|
654 | 654 | |
|
655 | 655 | # class initializations |
|
656 | 656 | code.InteractiveConsole.__init__(self,locals = self.user_ns) |
|
657 | 657 | Logger.__init__(self,log_ns = self.user_ns) |
|
658 | 658 | Magic.__init__(self,self) |
|
659 | 659 | |
|
660 | 660 | # an ugly hack to get a pointer to the shell, so I can start writing |
|
661 | 661 | # magic code via this pointer instead of the current mixin salad. |
|
662 | 662 | Magic.set_shell(self,self) |
|
663 | 663 | |
|
664 | 664 | # hooks holds pointers used for user-side customizations |
|
665 | 665 | self.hooks = Struct() |
|
666 | 666 | |
|
667 | 667 | # Set all default hooks, defined in the IPython.hooks module. |
|
668 | 668 | hooks = IPython.hooks |
|
669 | 669 | for hook_name in hooks.__all__: |
|
670 | 670 | self.set_hook(hook_name,getattr(hooks,hook_name)) |
|
671 | 671 | |
|
672 | 672 | # Flag to mark unconditional exit |
|
673 | 673 | self.exit_now = False |
|
674 | 674 | |
|
675 | 675 | self.usage_min = """\ |
|
676 | 676 | An enhanced console for Python. |
|
677 | 677 | Some of its features are: |
|
678 | 678 | - Readline support if the readline library is present. |
|
679 | 679 | - Tab completion in the local namespace. |
|
680 | 680 | - Logging of input, see command-line options. |
|
681 | 681 | - System shell escape via ! , eg !ls. |
|
682 | 682 | - Magic commands, starting with a % (like %ls, %pwd, %cd, etc.) |
|
683 | 683 | - Keeps track of locally defined variables via %who, %whos. |
|
684 | 684 | - Show object information with a ? eg ?x or x? (use ?? for more info). |
|
685 | 685 | """ |
|
686 | 686 | if usage: self.usage = usage |
|
687 | 687 | else: self.usage = self.usage_min |
|
688 | 688 | |
|
689 | 689 | # Storage |
|
690 | 690 | self.rc = rc # This will hold all configuration information |
|
691 | 691 | self.inputcache = [] |
|
692 | 692 | self._boundcache = [] |
|
693 | 693 | self.pager = 'less' |
|
694 | 694 | # temporary files used for various purposes. Deleted at exit. |
|
695 | 695 | self.tempfiles = [] |
|
696 | 696 | |
|
697 | 697 | # Keep track of readline usage (later set by init_readline) |
|
698 | 698 | self.has_readline = 0 |
|
699 | 699 | |
|
700 | 700 | # for pushd/popd management |
|
701 | 701 | try: |
|
702 | 702 | self.home_dir = get_home_dir() |
|
703 | 703 | except HomeDirError,msg: |
|
704 | 704 | fatal(msg) |
|
705 | 705 | |
|
706 | 706 | self.dir_stack = [os.getcwd().replace(self.home_dir,'~')] |
|
707 | 707 | |
|
708 | 708 | # Functions to call the underlying shell. |
|
709 | 709 | |
|
710 | 710 | # utility to expand user variables via Itpl |
|
711 | 711 | self.var_expand = lambda cmd: str(ItplNS(cmd.replace('#','\#'), |
|
712 | 712 | self.user_ns)) |
|
713 | 713 | # The first is similar to os.system, but it doesn't return a value, |
|
714 | 714 | # and it allows interpolation of variables in the user's namespace. |
|
715 | 715 | self.system = lambda cmd: shell(self.var_expand(cmd), |
|
716 | 716 | header='IPython system call: ', |
|
717 | 717 | verbose=self.rc.system_verbose) |
|
718 | 718 | # These are for getoutput and getoutputerror: |
|
719 | 719 | self.getoutput = lambda cmd: \ |
|
720 | 720 | getoutput(self.var_expand(cmd), |
|
721 | 721 | header='IPython system call: ', |
|
722 | 722 | verbose=self.rc.system_verbose) |
|
723 | 723 | self.getoutputerror = lambda cmd: \ |
|
724 | 724 | getoutputerror(str(ItplNS(cmd.replace('#','\#'), |
|
725 | 725 | self.user_ns)), |
|
726 | 726 | header='IPython system call: ', |
|
727 | 727 | verbose=self.rc.system_verbose) |
|
728 | 728 | |
|
729 | 729 | # RegExp for splitting line contents into pre-char//first |
|
730 | 730 | # word-method//rest. For clarity, each group in on one line. |
|
731 | 731 | |
|
732 | 732 | # WARNING: update the regexp if the above escapes are changed, as they |
|
733 | 733 | # are hardwired in. |
|
734 | 734 | |
|
735 | 735 | # Don't get carried away with trying to make the autocalling catch too |
|
736 | 736 | # much: it's better to be conservative rather than to trigger hidden |
|
737 | 737 | # evals() somewhere and end up causing side effects. |
|
738 | 738 | |
|
739 | 739 | self.line_split = re.compile(r'^([\s*,;/])' |
|
740 | 740 | r'([\?\w\.]+\w*\s*)' |
|
741 | 741 | r'(\(?.*$)') |
|
742 | 742 | |
|
743 | 743 | # Original re, keep around for a while in case changes break something |
|
744 | 744 | #self.line_split = re.compile(r'(^[\s*!\?%,/]?)' |
|
745 | 745 | # r'(\s*[\?\w\.]+\w*\s*)' |
|
746 | 746 | # r'(\(?.*$)') |
|
747 | 747 | |
|
748 | 748 | # RegExp to identify potential function names |
|
749 | 749 | self.re_fun_name = re.compile(r'[a-zA-Z_]([a-zA-Z0-9_.]*) *$') |
|
750 | 750 | # RegExp to exclude strings with this start from autocalling |
|
751 | 751 | self.re_exclude_auto = re.compile('^[!=()<>,\*/\+-]|^is ') |
|
752 | 752 | # try to catch also methods for stuff in lists/tuples/dicts: off |
|
753 | 753 | # (experimental). For this to work, the line_split regexp would need |
|
754 | 754 | # to be modified so it wouldn't break things at '['. That line is |
|
755 | 755 | # nasty enough that I shouldn't change it until I can test it _well_. |
|
756 | 756 | #self.re_fun_name = re.compile (r'[a-zA-Z_]([a-zA-Z0-9_.\[\]]*) ?$') |
|
757 | 757 | |
|
758 | 758 | # keep track of where we started running (mainly for crash post-mortem) |
|
759 | 759 | self.starting_dir = os.getcwd() |
|
760 | 760 | |
|
761 | 761 | # Attributes for Logger mixin class, make defaults here |
|
762 | 762 | self._dolog = 0 |
|
763 | 763 | self.LOG = '' |
|
764 | 764 | self.LOGDEF = '.InteractiveShell.log' |
|
765 | 765 | self.LOGMODE = 'over' |
|
766 | 766 | self.LOGHEAD = Itpl( |
|
767 | 767 | """#log# Automatic Logger file. *** THIS MUST BE THE FIRST LINE *** |
|
768 | 768 | #log# DO NOT CHANGE THIS LINE OR THE TWO BELOW |
|
769 | 769 | #log# opts = $self.rc.opts |
|
770 | 770 | #log# args = $self.rc.args |
|
771 | 771 | #log# It is safe to make manual edits below here. |
|
772 | 772 | #log#----------------------------------------------------------------------- |
|
773 | 773 | """) |
|
774 | 774 | # Various switches which can be set |
|
775 | 775 | self.CACHELENGTH = 5000 # this is cheap, it's just text |
|
776 | 776 | self.BANNER = "Python %(version)s on %(platform)s\n" % sys.__dict__ |
|
777 | 777 | self.banner2 = banner2 |
|
778 | 778 | |
|
779 | 779 | # TraceBack handlers: |
|
780 | 780 | # Need two, one for syntax errors and one for other exceptions. |
|
781 | 781 | self.SyntaxTB = ultraTB.ListTB(color_scheme='NoColor') |
|
782 | 782 | # This one is initialized with an offset, meaning we always want to |
|
783 | 783 | # remove the topmost item in the traceback, which is our own internal |
|
784 | 784 | # code. Valid modes: ['Plain','Context','Verbose'] |
|
785 | 785 | self.InteractiveTB = ultraTB.AutoFormattedTB(mode = 'Plain', |
|
786 | 786 | color_scheme='NoColor', |
|
787 | 787 | tb_offset = 1) |
|
788 | 788 | # and add any custom exception handlers the user may have specified |
|
789 | 789 | self.set_custom_exc(*custom_exceptions) |
|
790 | 790 | |
|
791 | 791 | # Object inspector |
|
792 | 792 | ins_colors = OInspect.InspectColors |
|
793 | 793 | code_colors = PyColorize.ANSICodeColors |
|
794 | 794 | self.inspector = OInspect.Inspector(ins_colors,code_colors,'NoColor') |
|
795 | 795 | self.autoindent = 0 |
|
796 | 796 | |
|
797 | 797 | # Make some aliases automatically |
|
798 | 798 | # Prepare list of shell aliases to auto-define |
|
799 | 799 | if os.name == 'posix': |
|
800 | 800 | auto_alias = ('mkdir mkdir', 'rmdir rmdir', |
|
801 | 801 | 'mv mv -i','rm rm -i','cp cp -i', |
|
802 | 802 | 'cat cat','less less','clear clear', |
|
803 | 803 | # a better ls |
|
804 | 804 | 'ls ls -F', |
|
805 | 805 | # long ls |
|
806 | 806 | 'll ls -lF', |
|
807 | 807 | # color ls |
|
808 | 808 | 'lc ls -F -o --color', |
|
809 | 809 | # ls normal files only |
|
810 | 810 | 'lf ls -F -o --color %l | grep ^-', |
|
811 | 811 | # ls symbolic links |
|
812 | 812 | 'lk ls -F -o --color %l | grep ^l', |
|
813 | 813 | # directories or links to directories, |
|
814 | 814 | 'ldir ls -F -o --color %l | grep /$', |
|
815 | 815 | # things which are executable |
|
816 | 816 | 'lx ls -F -o --color %l | grep ^-..x', |
|
817 | 817 | ) |
|
818 | 818 | elif os.name in ['nt','dos']: |
|
819 | 819 | auto_alias = ('dir dir /on', 'ls dir /on', |
|
820 | 820 | 'ddir dir /ad /on', 'ldir dir /ad /on', |
|
821 | 821 | 'mkdir mkdir','rmdir rmdir','echo echo', |
|
822 | 822 | 'ren ren','cls cls','copy copy') |
|
823 | 823 | else: |
|
824 | 824 | auto_alias = () |
|
825 | 825 | self.auto_alias = map(lambda s:s.split(None,1),auto_alias) |
|
826 | 826 | # Call the actual (public) initializer |
|
827 | 827 | self.init_auto_alias() |
|
828 | 828 | # end __init__ |
|
829 | 829 | |
|
830 | 830 | def set_hook(self,name,hook): |
|
831 | 831 | """set_hook(name,hook) -> sets an internal IPython hook. |
|
832 | 832 | |
|
833 | 833 | IPython exposes some of its internal API as user-modifiable hooks. By |
|
834 | 834 | resetting one of these hooks, you can modify IPython's behavior to |
|
835 | 835 | call at runtime your own routines.""" |
|
836 | 836 | |
|
837 | 837 | # At some point in the future, this should validate the hook before it |
|
838 | 838 | # accepts it. Probably at least check that the hook takes the number |
|
839 | 839 | # of args it's supposed to. |
|
840 | 840 | setattr(self.hooks,name,new.instancemethod(hook,self,self.__class__)) |
|
841 | 841 | |
|
842 | 842 | def set_custom_exc(self,exc_tuple,handler): |
|
843 | 843 | """set_custom_exc(exc_tuple,handler) |
|
844 | 844 | |
|
845 | 845 | Set a custom exception handler, which will be called if any of the |
|
846 | 846 | exceptions in exc_tuple occur in the mainloop (specifically, in the |
|
847 | 847 | runcode() method. |
|
848 | 848 | |
|
849 | 849 | Inputs: |
|
850 | 850 | |
|
851 | 851 | - exc_tuple: a *tuple* of valid exceptions to call the defined |
|
852 | 852 | handler for. It is very important that you use a tuple, and NOT A |
|
853 | 853 | LIST here, because of the way Python's except statement works. If |
|
854 | 854 | you only want to trap a single exception, use a singleton tuple: |
|
855 | 855 | |
|
856 | 856 | exc_tuple == (MyCustomException,) |
|
857 | 857 | |
|
858 | 858 | - handler: this must be defined as a function with the following |
|
859 | 859 | basic interface: def my_handler(self,etype,value,tb). |
|
860 | 860 | |
|
861 | 861 | This will be made into an instance method (via new.instancemethod) |
|
862 | 862 | of IPython itself, and it will be called if any of the exceptions |
|
863 | 863 | listed in the exc_tuple are caught. If the handler is None, an |
|
864 | 864 | internal basic one is used, which just prints basic info. |
|
865 | 865 | |
|
866 | 866 | WARNING: by putting in your own exception handler into IPython's main |
|
867 | 867 | execution loop, you run a very good chance of nasty crashes. This |
|
868 | 868 | facility should only be used if you really know what you are doing.""" |
|
869 | 869 | |
|
870 | 870 | assert type(exc_tuple)==type(()) , \ |
|
871 | 871 | "The custom exceptions must be given AS A TUPLE." |
|
872 | 872 | |
|
873 | 873 | def dummy_handler(self,etype,value,tb): |
|
874 | 874 | print '*** Simple custom exception handler ***' |
|
875 | 875 | print 'Exception type :',etype |
|
876 | 876 | print 'Exception value:',value |
|
877 | 877 | print 'Traceback :',tb |
|
878 | 878 | print 'Source code :','\n'.join(self.buffer) |
|
879 | 879 | |
|
880 | 880 | if handler is None: handler = dummy_handler |
|
881 | 881 | |
|
882 | 882 | self.CustomTB = new.instancemethod(handler,self,self.__class__) |
|
883 | 883 | self.custom_exceptions = exc_tuple |
|
884 | 884 | |
|
885 | 885 | def set_custom_completer(self,completer,pos=0): |
|
886 | 886 | """set_custom_completer(completer,pos=0) |
|
887 | 887 | |
|
888 | 888 | Adds a new custom completer function. |
|
889 | 889 | |
|
890 | 890 | The position argument (defaults to 0) is the index in the completers |
|
891 | 891 | list where you want the completer to be inserted.""" |
|
892 | 892 | |
|
893 | 893 | newcomp = new.instancemethod(completer,self.Completer, |
|
894 | 894 | self.Completer.__class__) |
|
895 | 895 | self.Completer.matchers.insert(pos,newcomp) |
|
896 | 896 | |
|
897 | 897 | def complete(self,text): |
|
898 | 898 | """Return a sorted list of all possible completions on text. |
|
899 | 899 | |
|
900 | 900 | Inputs: |
|
901 | 901 | |
|
902 | 902 | - text: a string of text to be completed on. |
|
903 | 903 | |
|
904 | 904 | This is a wrapper around the completion mechanism, similar to what |
|
905 | 905 | readline does at the command line when the TAB key is hit. By |
|
906 | 906 | exposing it as a method, it can be used by other non-readline |
|
907 | 907 | environments (such as GUIs) for text completion. |
|
908 | 908 | |
|
909 | 909 | Simple usage example: |
|
910 | 910 | |
|
911 | 911 | In [1]: x = 'hello' |
|
912 | 912 | |
|
913 | 913 | In [2]: __IP.complete('x.l') |
|
914 | 914 | Out[2]: ['x.ljust', 'x.lower', 'x.lstrip']""" |
|
915 | 915 | |
|
916 | 916 | complete = self.Completer.complete |
|
917 | 917 | state = 0 |
|
918 | 918 | # use a dict so we get unique keys, since ipyhton's multiple |
|
919 | 919 | # completers can return duplicates. |
|
920 | 920 | comps = {} |
|
921 | 921 | while True: |
|
922 | 922 | newcomp = complete(text,state) |
|
923 | 923 | if newcomp is None: |
|
924 | 924 | break |
|
925 | 925 | comps[newcomp] = 1 |
|
926 | 926 | state += 1 |
|
927 | 927 | outcomps = comps.keys() |
|
928 | 928 | outcomps.sort() |
|
929 | 929 | return outcomps |
|
930 | 930 | |
|
931 | 931 | def post_config_initialization(self): |
|
932 | 932 | """Post configuration init method |
|
933 | 933 | |
|
934 | 934 | This is called after the configuration files have been processed to |
|
935 | 935 | 'finalize' the initialization.""" |
|
936 | 936 | |
|
937 | 937 | # dynamic data that survives through sessions |
|
938 | 938 | # XXX make the filename a config option? |
|
939 | 939 | persist_base = 'persist' |
|
940 | 940 | if self.rc.profile: |
|
941 | 941 | persist_base += '_%s' % self.rc.profile |
|
942 | 942 | self.persist_fname = os.path.join(self.rc.ipythondir,persist_base) |
|
943 | 943 | |
|
944 | 944 | try: |
|
945 | 945 | self.persist = pickle.load(file(self.persist_fname)) |
|
946 | 946 | except: |
|
947 | 947 | self.persist = {} |
|
948 | 948 | |
|
949 | 949 | def init_auto_alias(self): |
|
950 | 950 | """Define some aliases automatically. |
|
951 | 951 | |
|
952 | 952 | These are ALL parameter-less aliases""" |
|
953 | 953 | for alias,cmd in self.auto_alias: |
|
954 | 954 | self.alias_table[alias] = (0,cmd) |
|
955 | 955 | |
|
956 | 956 | def alias_table_validate(self,verbose=0): |
|
957 | 957 | """Update information about the alias table. |
|
958 | 958 | |
|
959 | 959 | In particular, make sure no Python keywords/builtins are in it.""" |
|
960 | 960 | |
|
961 | 961 | no_alias = self.no_alias |
|
962 | 962 | for k in self.alias_table: |
|
963 | 963 | if k in no_alias: |
|
964 | 964 | del self.alias_table[k] |
|
965 | 965 | if verbose: |
|
966 | 966 | print ("Deleting alias <%s>, it's a Python " |
|
967 | 967 | "keyword or builtin." % k) |
|
968 | 968 | |
|
969 | 969 | def set_autoindent(self,value=None): |
|
970 | 970 | """Set the autoindent flag, checking for readline support. |
|
971 | 971 | |
|
972 | 972 | If called with no arguments, it acts as a toggle.""" |
|
973 | 973 | |
|
974 | 974 | if not self.has_readline: |
|
975 | 975 | if os.name == 'posix': |
|
976 | 976 | warn("The auto-indent feature requires the readline library") |
|
977 | 977 | self.autoindent = 0 |
|
978 | 978 | return |
|
979 | 979 | if value is None: |
|
980 | 980 | self.autoindent = not self.autoindent |
|
981 | 981 | else: |
|
982 | 982 | self.autoindent = value |
|
983 | 983 | |
|
984 | 984 | def rc_set_toggle(self,rc_field,value=None): |
|
985 | 985 | """Set or toggle a field in IPython's rc config. structure. |
|
986 | 986 | |
|
987 | 987 | If called with no arguments, it acts as a toggle. |
|
988 | 988 | |
|
989 | 989 | If called with a non-existent field, the resulting AttributeError |
|
990 | 990 | exception will propagate out.""" |
|
991 | 991 | |
|
992 | 992 | rc_val = getattr(self.rc,rc_field) |
|
993 | 993 | if value is None: |
|
994 | 994 | value = not rc_val |
|
995 | 995 | setattr(self.rc,rc_field,value) |
|
996 | 996 | |
|
997 | 997 | def user_setup(self,ipythondir,rc_suffix,mode='install'): |
|
998 | 998 | """Install the user configuration directory. |
|
999 | 999 | |
|
1000 | 1000 | Can be called when running for the first time or to upgrade the user's |
|
1001 | 1001 | .ipython/ directory with the mode parameter. Valid modes are 'install' |
|
1002 | 1002 | and 'upgrade'.""" |
|
1003 | 1003 | |
|
1004 | 1004 | def wait(): |
|
1005 | 1005 | try: |
|
1006 | 1006 | raw_input("Please press <RETURN> to start IPython.") |
|
1007 | 1007 | except EOFError: |
|
1008 | 1008 | print >> Term.cout |
|
1009 | 1009 | print '*'*70 |
|
1010 | 1010 | |
|
1011 | 1011 | cwd = os.getcwd() # remember where we started |
|
1012 | 1012 | glb = glob.glob |
|
1013 | 1013 | print '*'*70 |
|
1014 | 1014 | if mode == 'install': |
|
1015 | 1015 | print \ |
|
1016 | 1016 | """Welcome to IPython. I will try to create a personal configuration directory |
|
1017 | 1017 | where you can customize many aspects of IPython's functionality in:\n""" |
|
1018 | 1018 | else: |
|
1019 | 1019 | print 'I am going to upgrade your configuration in:' |
|
1020 | 1020 | |
|
1021 | 1021 | print ipythondir |
|
1022 | 1022 | |
|
1023 | 1023 | rcdirend = os.path.join('IPython','UserConfig') |
|
1024 | 1024 | cfg = lambda d: os.path.join(d,rcdirend) |
|
1025 | 1025 | try: |
|
1026 | 1026 | rcdir = filter(os.path.isdir,map(cfg,sys.path))[0] |
|
1027 | 1027 | except IOError: |
|
1028 | 1028 | warning = """ |
|
1029 | 1029 | Installation error. IPython's directory was not found. |
|
1030 | 1030 | |
|
1031 | 1031 | Check the following: |
|
1032 | 1032 | |
|
1033 | 1033 | The ipython/IPython directory should be in a directory belonging to your |
|
1034 | 1034 | PYTHONPATH environment variable (that is, it should be in a directory |
|
1035 | 1035 | belonging to sys.path). You can copy it explicitly there or just link to it. |
|
1036 | 1036 | |
|
1037 | 1037 | IPython will proceed with builtin defaults. |
|
1038 | 1038 | """ |
|
1039 | 1039 | warn(warning) |
|
1040 | 1040 | wait() |
|
1041 | 1041 | return |
|
1042 | 1042 | |
|
1043 | 1043 | if mode == 'install': |
|
1044 | 1044 | try: |
|
1045 | 1045 | shutil.copytree(rcdir,ipythondir) |
|
1046 | 1046 | os.chdir(ipythondir) |
|
1047 | 1047 | rc_files = glb("ipythonrc*") |
|
1048 | 1048 | for rc_file in rc_files: |
|
1049 | 1049 | os.rename(rc_file,rc_file+rc_suffix) |
|
1050 | 1050 | except: |
|
1051 | 1051 | warning = """ |
|
1052 | 1052 | |
|
1053 | 1053 | There was a problem with the installation: |
|
1054 | 1054 | %s |
|
1055 | 1055 | Try to correct it or contact the developers if you think it's a bug. |
|
1056 | 1056 | IPython will proceed with builtin defaults.""" % sys.exc_info()[1] |
|
1057 | 1057 | warn(warning) |
|
1058 | 1058 | wait() |
|
1059 | 1059 | return |
|
1060 | 1060 | |
|
1061 | 1061 | elif mode == 'upgrade': |
|
1062 | 1062 | try: |
|
1063 | 1063 | os.chdir(ipythondir) |
|
1064 | 1064 | except: |
|
1065 | 1065 | print """ |
|
1066 | 1066 | Can not upgrade: changing to directory %s failed. Details: |
|
1067 | 1067 | %s |
|
1068 | 1068 | """ % (ipythondir,sys.exc_info()[1]) |
|
1069 | 1069 | wait() |
|
1070 | 1070 | return |
|
1071 | 1071 | else: |
|
1072 | 1072 | sources = glb(os.path.join(rcdir,'[A-Za-z]*')) |
|
1073 | 1073 | for new_full_path in sources: |
|
1074 | 1074 | new_filename = os.path.basename(new_full_path) |
|
1075 | 1075 | if new_filename.startswith('ipythonrc'): |
|
1076 | 1076 | new_filename = new_filename + rc_suffix |
|
1077 | 1077 | # The config directory should only contain files, skip any |
|
1078 | 1078 | # directories which may be there (like CVS) |
|
1079 | 1079 | if os.path.isdir(new_full_path): |
|
1080 | 1080 | continue |
|
1081 | 1081 | if os.path.exists(new_filename): |
|
1082 | 1082 | old_file = new_filename+'.old' |
|
1083 | 1083 | if os.path.exists(old_file): |
|
1084 | 1084 | os.remove(old_file) |
|
1085 | 1085 | os.rename(new_filename,old_file) |
|
1086 | 1086 | shutil.copy(new_full_path,new_filename) |
|
1087 | 1087 | else: |
|
1088 | 1088 | raise ValueError,'unrecognized mode for install:',`mode` |
|
1089 | 1089 | |
|
1090 | 1090 | # Fix line-endings to those native to each platform in the config |
|
1091 | 1091 | # directory. |
|
1092 | 1092 | try: |
|
1093 | 1093 | os.chdir(ipythondir) |
|
1094 | 1094 | except: |
|
1095 | 1095 | print """ |
|
1096 | 1096 | Problem: changing to directory %s failed. |
|
1097 | 1097 | Details: |
|
1098 | 1098 | %s |
|
1099 | 1099 | |
|
1100 | 1100 | Some configuration files may have incorrect line endings. This should not |
|
1101 | 1101 | cause any problems during execution. """ % (ipythondir,sys.exc_info()[1]) |
|
1102 | 1102 | wait() |
|
1103 | 1103 | else: |
|
1104 | 1104 | for fname in glb('ipythonrc*'): |
|
1105 | 1105 | try: |
|
1106 | 1106 | native_line_ends(fname,backup=0) |
|
1107 | 1107 | except IOError: |
|
1108 | 1108 | pass |
|
1109 | 1109 | |
|
1110 | 1110 | if mode == 'install': |
|
1111 | 1111 | print """ |
|
1112 | 1112 | Successful installation! |
|
1113 | 1113 | |
|
1114 | 1114 | Please read the sections 'Initial Configuration' and 'Quick Tips' in the |
|
1115 | 1115 | IPython manual (there are both HTML and PDF versions supplied with the |
|
1116 | 1116 | distribution) to make sure that your system environment is properly configured |
|
1117 | 1117 | to take advantage of IPython's features.""" |
|
1118 | 1118 | else: |
|
1119 | 1119 | print """ |
|
1120 | 1120 | Successful upgrade! |
|
1121 | 1121 | |
|
1122 | 1122 | All files in your directory: |
|
1123 | 1123 | %(ipythondir)s |
|
1124 | 1124 | which would have been overwritten by the upgrade were backed up with a .old |
|
1125 | 1125 | extension. If you had made particular customizations in those files you may |
|
1126 | 1126 | want to merge them back into the new files.""" % locals() |
|
1127 | 1127 | wait() |
|
1128 | 1128 | os.chdir(cwd) |
|
1129 | 1129 | # end user_setup() |
|
1130 | 1130 | |
|
1131 | 1131 | def atexit_operations(self): |
|
1132 | 1132 | """This will be executed at the time of exit. |
|
1133 | 1133 | |
|
1134 | 1134 | Saving of persistent data should be performed here. """ |
|
1135 | 1135 | |
|
1136 | 1136 | # input history |
|
1137 | 1137 | self.savehist() |
|
1138 | 1138 | |
|
1139 | 1139 | # Cleanup all tempfiles left around |
|
1140 | 1140 | for tfile in self.tempfiles: |
|
1141 | 1141 | try: |
|
1142 | 1142 | os.unlink(tfile) |
|
1143 | 1143 | except OSError: |
|
1144 | 1144 | pass |
|
1145 | 1145 | |
|
1146 | 1146 | # save the "persistent data" catch-all dictionary |
|
1147 | 1147 | try: |
|
1148 | 1148 | pickle.dump(self.persist, open(self.persist_fname,"w")) |
|
1149 | 1149 | except: |
|
1150 | 1150 | print "*** ERROR *** persistent data saving failed." |
|
1151 | 1151 | |
|
1152 | 1152 | def savehist(self): |
|
1153 | 1153 | """Save input history to a file (via readline library).""" |
|
1154 | 1154 | try: |
|
1155 | 1155 | self.readline.write_history_file(self.histfile) |
|
1156 | 1156 | except: |
|
1157 | 1157 | print 'Unable to save IPython command history to file: ' + \ |
|
1158 | 1158 | `self.histfile` |
|
1159 | 1159 | |
|
1160 | 1160 | def pre_readline(self): |
|
1161 | 1161 | """readline hook to be used at the start of each line. |
|
1162 | 1162 | |
|
1163 | 1163 | Currently it handles auto-indent only.""" |
|
1164 | 1164 | |
|
1165 | 1165 | self.readline.insert_text(' '* self.readline_indent) |
|
1166 | 1166 | |
|
1167 | 1167 | def init_readline(self): |
|
1168 | 1168 | """Command history completion/saving/reloading.""" |
|
1169 | 1169 | try: |
|
1170 | 1170 | import readline |
|
1171 | 1171 | self.Completer = MagicCompleter(self, |
|
1172 | 1172 | self.user_ns, |
|
1173 | 1173 | self.rc.readline_omit__names, |
|
1174 | 1174 | self.alias_table) |
|
1175 | 1175 | except ImportError,NameError: |
|
1176 | 1176 | # If FlexCompleter failed to import, MagicCompleter won't be |
|
1177 | 1177 | # defined. This can happen because of a problem with readline |
|
1178 | 1178 | self.has_readline = 0 |
|
1179 | 1179 | # no point in bugging windows users with this every time: |
|
1180 | 1180 | if os.name == 'posix': |
|
1181 | 1181 | warn('Readline services not available on this platform.') |
|
1182 | 1182 | else: |
|
1183 | 1183 | import atexit |
|
1184 | 1184 | |
|
1185 | 1185 | # Platform-specific configuration |
|
1186 | 1186 | if os.name == 'nt': |
|
1187 | 1187 | # readline under Windows modifies the default exit behavior |
|
1188 | 1188 | # from being Ctrl-Z/Return to the Unix Ctrl-D one. |
|
1189 | 1189 | __builtin__.exit = __builtin__.quit = \ |
|
1190 | 1190 | ('Use Ctrl-D (i.e. EOF) to exit. ' |
|
1191 | 1191 | 'Use %Exit or %Quit to exit without confirmation.') |
|
1192 | 1192 | self.readline_startup_hook = readline.set_pre_input_hook |
|
1193 | 1193 | else: |
|
1194 | 1194 | self.readline_startup_hook = readline.set_startup_hook |
|
1195 | 1195 | |
|
1196 | 1196 | # Load user's initrc file (readline config) |
|
1197 | 1197 | inputrc_name = os.environ.get('INPUTRC') |
|
1198 | 1198 | if inputrc_name is None: |
|
1199 | 1199 | home_dir = get_home_dir() |
|
1200 | 1200 | if home_dir is not None: |
|
1201 | 1201 | inputrc_name = os.path.join(home_dir,'.inputrc') |
|
1202 | 1202 | if os.path.isfile(inputrc_name): |
|
1203 | 1203 | try: |
|
1204 | 1204 | readline.read_init_file(inputrc_name) |
|
1205 | 1205 | except: |
|
1206 | 1206 | warn('Problems reading readline initialization file <%s>' |
|
1207 | 1207 | % inputrc_name) |
|
1208 | 1208 | |
|
1209 | 1209 | self.has_readline = 1 |
|
1210 | 1210 | self.readline = readline |
|
1211 | 1211 | self.readline_indent = 0 # for auto-indenting via readline |
|
1212 | 1212 | # save this in sys so embedded copies can restore it properly |
|
1213 | 1213 | sys.ipcompleter = self.Completer.complete |
|
1214 | 1214 | readline.set_completer(self.Completer.complete) |
|
1215 | 1215 | |
|
1216 | 1216 | # Configure readline according to user's prefs |
|
1217 | 1217 | for rlcommand in self.rc.readline_parse_and_bind: |
|
1218 | 1218 | readline.parse_and_bind(rlcommand) |
|
1219 | 1219 | |
|
1220 | 1220 | # remove some chars from the delimiters list |
|
1221 | 1221 | delims = readline.get_completer_delims() |
|
1222 | 1222 | delims = delims.translate(string._idmap, |
|
1223 | 1223 | self.rc.readline_remove_delims) |
|
1224 | 1224 | readline.set_completer_delims(delims) |
|
1225 | 1225 | # otherwise we end up with a monster history after a while: |
|
1226 | 1226 | readline.set_history_length(1000) |
|
1227 | 1227 | try: |
|
1228 | 1228 | #print '*** Reading readline history' # dbg |
|
1229 | 1229 | readline.read_history_file(self.histfile) |
|
1230 | 1230 | except IOError: |
|
1231 | 1231 | pass # It doesn't exist yet. |
|
1232 | 1232 | |
|
1233 | 1233 | atexit.register(self.atexit_operations) |
|
1234 | 1234 | del atexit |
|
1235 | 1235 | |
|
1236 | 1236 | # Configure auto-indent for all platforms |
|
1237 | 1237 | self.set_autoindent(self.rc.autoindent) |
|
1238 | 1238 | |
|
1239 | 1239 | def showsyntaxerror(self, filename=None): |
|
1240 | 1240 | """Display the syntax error that just occurred. |
|
1241 | 1241 | |
|
1242 | 1242 | This doesn't display a stack trace because there isn't one. |
|
1243 | 1243 | |
|
1244 | 1244 | If a filename is given, it is stuffed in the exception instead |
|
1245 | 1245 | of what was there before (because Python's parser always uses |
|
1246 | 1246 | "<string>" when reading from a string). |
|
1247 | 1247 | """ |
|
1248 | 1248 | type, value, sys.last_traceback = sys.exc_info() |
|
1249 | 1249 | sys.last_type = type |
|
1250 | 1250 | sys.last_value = value |
|
1251 | 1251 | if filename and type is SyntaxError: |
|
1252 | 1252 | # Work hard to stuff the correct filename in the exception |
|
1253 | 1253 | try: |
|
1254 | 1254 | msg, (dummy_filename, lineno, offset, line) = value |
|
1255 | 1255 | except: |
|
1256 | 1256 | # Not the format we expect; leave it alone |
|
1257 | 1257 | pass |
|
1258 | 1258 | else: |
|
1259 | 1259 | # Stuff in the right filename |
|
1260 | 1260 | try: |
|
1261 | 1261 | # Assume SyntaxError is a class exception |
|
1262 | 1262 | value = SyntaxError(msg, (filename, lineno, offset, line)) |
|
1263 | 1263 | except: |
|
1264 | 1264 | # If that failed, assume SyntaxError is a string |
|
1265 | 1265 | value = msg, (filename, lineno, offset, line) |
|
1266 | 1266 | self.SyntaxTB(type,value,[]) |
|
1267 | 1267 | |
|
1268 | 1268 | def debugger(self): |
|
1269 | 1269 | """Call the pdb debugger.""" |
|
1270 | 1270 | |
|
1271 | 1271 | if not self.rc.pdb: |
|
1272 | 1272 | return |
|
1273 | 1273 | pdb.pm() |
|
1274 | 1274 | |
|
1275 | 1275 | def showtraceback(self,exc_tuple = None): |
|
1276 | 1276 | """Display the exception that just occurred.""" |
|
1277 | 1277 | |
|
1278 | 1278 | # Though this won't be called by syntax errors in the input line, |
|
1279 | 1279 | # there may be SyntaxError cases whith imported code. |
|
1280 | 1280 | if exc_tuple is None: |
|
1281 | 1281 | type, value, tb = sys.exc_info() |
|
1282 | 1282 | else: |
|
1283 | 1283 | type, value, tb = exc_tuple |
|
1284 | 1284 | if type is SyntaxError: |
|
1285 | 1285 | self.showsyntaxerror() |
|
1286 | 1286 | else: |
|
1287 | 1287 | sys.last_type = type |
|
1288 | 1288 | sys.last_value = value |
|
1289 | 1289 | sys.last_traceback = tb |
|
1290 | 1290 | self.InteractiveTB() |
|
1291 | 1291 | if self.InteractiveTB.call_pdb and self.has_readline: |
|
1292 | 1292 | # pdb mucks up readline, fix it back |
|
1293 | 1293 | self.readline.set_completer(self.Completer.complete) |
|
1294 | 1294 | |
|
1295 | 1295 | def update_cache(self, line): |
|
1296 | 1296 | """puts line into cache""" |
|
1297 | 1297 | self.inputcache.insert(0, line) # This copies the cache every time ... :-( |
|
1298 | 1298 | if len(self.inputcache) >= self.CACHELENGTH: |
|
1299 | 1299 | self.inputcache.pop() # This not :-) |
|
1300 | 1300 | |
|
1301 | 1301 | def name_space_init(self): |
|
1302 | 1302 | """Create local namespace.""" |
|
1303 | 1303 | # We want this to be a method to facilitate embedded initialization. |
|
1304 | 1304 | code.InteractiveConsole.__init__(self,self.user_ns) |
|
1305 | 1305 | |
|
1306 | 1306 | def mainloop(self,banner=None): |
|
1307 | 1307 | """Creates the local namespace and starts the mainloop. |
|
1308 | 1308 | |
|
1309 | 1309 | If an optional banner argument is given, it will override the |
|
1310 | 1310 | internally created default banner.""" |
|
1311 | 1311 | |
|
1312 | 1312 | self.name_space_init() |
|
1313 | 1313 | if self.rc.c: # Emulate Python's -c option |
|
1314 | 1314 | self.exec_init_cmd() |
|
1315 | 1315 | if banner is None: |
|
1316 | 1316 | if self.rc.banner: |
|
1317 | 1317 | banner = self.BANNER+self.banner2 |
|
1318 | 1318 | else: |
|
1319 | 1319 | banner = '' |
|
1320 | 1320 | self.interact(banner) |
|
1321 | 1321 | |
|
1322 | 1322 | def exec_init_cmd(self): |
|
1323 | 1323 | """Execute a command given at the command line. |
|
1324 | 1324 | |
|
1325 | 1325 | This emulates Python's -c option.""" |
|
1326 | 1326 | |
|
1327 | 1327 | sys.argv = ['-c'] |
|
1328 | 1328 | self.push(self.rc.c) |
|
1329 | 1329 | |
|
1330 | 1330 | def embed_mainloop(self,header='',local_ns=None,global_ns=None,stack_depth=0): |
|
1331 | 1331 | """Embeds IPython into a running python program. |
|
1332 | 1332 | |
|
1333 | 1333 | Input: |
|
1334 | 1334 | |
|
1335 | 1335 | - header: An optional header message can be specified. |
|
1336 | 1336 | |
|
1337 | 1337 | - local_ns, global_ns: working namespaces. If given as None, the |
|
1338 | 1338 | IPython-initialized one is updated with __main__.__dict__, so that |
|
1339 | 1339 | program variables become visible but user-specific configuration |
|
1340 | 1340 | remains possible. |
|
1341 | 1341 | |
|
1342 | 1342 | - stack_depth: specifies how many levels in the stack to go to |
|
1343 | 1343 | looking for namespaces (when local_ns and global_ns are None). This |
|
1344 | 1344 | allows an intermediate caller to make sure that this function gets |
|
1345 | 1345 | the namespace from the intended level in the stack. By default (0) |
|
1346 | 1346 | it will get its locals and globals from the immediate caller. |
|
1347 | 1347 | |
|
1348 | 1348 | Warning: it's possible to use this in a program which is being run by |
|
1349 | 1349 | IPython itself (via %run), but some funny things will happen (a few |
|
1350 | 1350 | globals get overwritten). In the future this will be cleaned up, as |
|
1351 | 1351 | there is no fundamental reason why it can't work perfectly.""" |
|
1352 | 1352 | |
|
1353 | 1353 | # Patch for global embedding to make sure that things don't overwrite |
|
1354 | 1354 | # user globals accidentally. Thanks to Richard <rxe@renre-europe.com> |
|
1355 | 1355 | # FIXME. Test this a bit more carefully (the if.. is new) |
|
1356 | 1356 | if local_ns is None and global_ns is None: |
|
1357 | 1357 | self.user_ns.update(__main__.__dict__) |
|
1358 | 1358 | |
|
1359 | 1359 | # Get locals and globals from caller |
|
1360 | 1360 | if local_ns is None or global_ns is None: |
|
1361 | 1361 | call_frame = sys._getframe(stack_depth).f_back |
|
1362 | 1362 | |
|
1363 | 1363 | if local_ns is None: |
|
1364 | 1364 | local_ns = call_frame.f_locals |
|
1365 | 1365 | if global_ns is None: |
|
1366 | 1366 | global_ns = call_frame.f_globals |
|
1367 | 1367 | |
|
1368 | 1368 | # Update namespaces and fire up interpreter |
|
1369 | 1369 | self.user_ns.update(local_ns) |
|
1370 | 1370 | self.interact(header) |
|
1371 | 1371 | |
|
1372 | 1372 | # Remove locals from namespace |
|
1373 | 1373 | for k in local_ns: |
|
1374 | 1374 | del self.user_ns[k] |
|
1375 | 1375 | |
|
1376 | 1376 | def interact(self, banner=None): |
|
1377 | 1377 | """Closely emulate the interactive Python console. |
|
1378 | 1378 | |
|
1379 | 1379 | The optional banner argument specify the banner to print |
|
1380 | 1380 | before the first interaction; by default it prints a banner |
|
1381 | 1381 | similar to the one printed by the real Python interpreter, |
|
1382 | 1382 | followed by the current class name in parentheses (so as not |
|
1383 | 1383 | to confuse this with the real interpreter -- since it's so |
|
1384 | 1384 | close!). |
|
1385 | 1385 | |
|
1386 | 1386 | """ |
|
1387 | 1387 | cprt = 'Type "copyright", "credits" or "license" for more information.' |
|
1388 | 1388 | if banner is None: |
|
1389 | 1389 | self.write("Python %s on %s\n%s\n(%s)\n" % |
|
1390 | 1390 | (sys.version, sys.platform, cprt, |
|
1391 | 1391 | self.__class__.__name__)) |
|
1392 | 1392 | else: |
|
1393 | 1393 | self.write(banner) |
|
1394 | 1394 | |
|
1395 | 1395 | more = 0 |
|
1396 | 1396 | |
|
1397 | 1397 | # Mark activity in the builtins |
|
1398 | 1398 | __builtin__.__dict__['__IPYTHON__active'] += 1 |
|
1399 | 1399 | |
|
1400 | 1400 | # exit_now is set by a call to %Exit or %Quit |
|
1401 | 1401 | while not self.exit_now: |
|
1402 | 1402 | try: |
|
1403 | 1403 | if more: |
|
1404 | 1404 | prompt = self.outputcache.prompt2 |
|
1405 | 1405 | if self.autoindent: |
|
1406 | 1406 | self.readline_startup_hook(self.pre_readline) |
|
1407 | 1407 | else: |
|
1408 | 1408 | prompt = self.outputcache.prompt1 |
|
1409 | 1409 | try: |
|
1410 | 1410 | line = self.raw_input(prompt) |
|
1411 | 1411 | if self.autoindent: |
|
1412 | 1412 | self.readline_startup_hook(None) |
|
1413 | 1413 | except EOFError: |
|
1414 | 1414 | if self.autoindent: |
|
1415 | 1415 | self.readline_startup_hook(None) |
|
1416 | 1416 | self.write("\n") |
|
1417 | 1417 | if self.rc.confirm_exit: |
|
1418 | 1418 | if ask_yes_no('Do you really want to exit ([y]/n)?','y'): |
|
1419 | 1419 | break |
|
1420 | 1420 | else: |
|
1421 | 1421 | break |
|
1422 | 1422 | else: |
|
1423 | 1423 | more = self.push(line) |
|
1424 | 1424 | # Auto-indent management |
|
1425 | 1425 | if self.autoindent: |
|
1426 | 1426 | if line: |
|
1427 | 1427 | ini_spaces = re.match('^(\s+)',line) |
|
1428 | 1428 | if ini_spaces: |
|
1429 | 1429 | nspaces = ini_spaces.end() |
|
1430 | 1430 | else: |
|
1431 | 1431 | nspaces = 0 |
|
1432 | 1432 | self.readline_indent = nspaces |
|
1433 | 1433 | |
|
1434 | 1434 | if line[-1] == ':': |
|
1435 | 1435 | self.readline_indent += 4 |
|
1436 | 1436 | elif re.match(r'^\s+raise|^\s+return',line): |
|
1437 | 1437 | self.readline_indent -= 4 |
|
1438 | 1438 | else: |
|
1439 | 1439 | self.readline_indent = 0 |
|
1440 | 1440 | |
|
1441 | 1441 | except KeyboardInterrupt: |
|
1442 | 1442 | self.write("\nKeyboardInterrupt\n") |
|
1443 | 1443 | self.resetbuffer() |
|
1444 | 1444 | more = 0 |
|
1445 | 1445 | # keep cache in sync with the prompt counter: |
|
1446 | 1446 | self.outputcache.prompt_count -= 1 |
|
1447 | 1447 | |
|
1448 | 1448 | if self.autoindent: |
|
1449 | 1449 | self.readline_indent = 0 |
|
1450 | 1450 | |
|
1451 | 1451 | except bdb.BdbQuit: |
|
1452 | 1452 | warn("The Python debugger has exited with a BdbQuit exception.\n" |
|
1453 | 1453 | "Because of how pdb handles the stack, it is impossible\n" |
|
1454 | 1454 | "for IPython to properly format this particular exception.\n" |
|
1455 | 1455 | "IPython will resume normal operation.") |
|
1456 | 1456 | |
|
1457 | 1457 | # We are off again... |
|
1458 | 1458 | __builtin__.__dict__['__IPYTHON__active'] -= 1 |
|
1459 | 1459 | |
|
1460 | 1460 | def excepthook(self, type, value, tb): |
|
1461 | 1461 | """One more defense for GUI apps that call sys.excepthook. |
|
1462 | 1462 | |
|
1463 | 1463 | GUI frameworks like wxPython trap exceptions and call |
|
1464 | 1464 | sys.excepthook themselves. I guess this is a feature that |
|
1465 | 1465 | enables them to keep running after exceptions that would |
|
1466 | 1466 | otherwise kill their mainloop. This is a bother for IPython |
|
1467 | 1467 | which excepts to catch all of the program exceptions with a try: |
|
1468 | 1468 | except: statement. |
|
1469 | 1469 | |
|
1470 | 1470 | Normally, IPython sets sys.excepthook to a CrashHandler instance, so if |
|
1471 | 1471 | any app directly invokes sys.excepthook, it will look to the user like |
|
1472 | 1472 | IPython crashed. In order to work around this, we can disable the |
|
1473 | 1473 | CrashHandler and replace it with this excepthook instead, which prints a |
|
1474 | 1474 | regular traceback using our InteractiveTB. In this fashion, apps which |
|
1475 | 1475 | call sys.excepthook will generate a regular-looking exception from |
|
1476 | 1476 | IPython, and the CrashHandler will only be triggered by real IPython |
|
1477 | 1477 | crashes. |
|
1478 | 1478 | |
|
1479 | 1479 | This hook should be used sparingly, only in places which are not likely |
|
1480 | 1480 | to be true IPython errors. |
|
1481 | 1481 | """ |
|
1482 | 1482 | |
|
1483 | 1483 | self.InteractiveTB(type, value, tb, tb_offset=0) |
|
1484 | 1484 | if self.InteractiveTB.call_pdb and self.has_readline: |
|
1485 | 1485 | self.readline.set_completer(self.Completer.complete) |
|
1486 | 1486 | |
|
1487 | 1487 | def call_alias(self,alias,rest=''): |
|
1488 | 1488 | """Call an alias given its name and the rest of the line. |
|
1489 | 1489 | |
|
1490 | 1490 | This function MUST be given a proper alias, because it doesn't make |
|
1491 | 1491 | any checks when looking up into the alias table. The caller is |
|
1492 | 1492 | responsible for invoking it only with a valid alias.""" |
|
1493 | 1493 | |
|
1494 | 1494 | #print 'ALIAS: <%s>+<%s>' % (alias,rest) # dbg |
|
1495 | 1495 | nargs,cmd = self.alias_table[alias] |
|
1496 | 1496 | # Expand the %l special to be the user's input line |
|
1497 | 1497 | if cmd.find('%l') >= 0: |
|
1498 | 1498 | cmd = cmd.replace('%l',rest) |
|
1499 | 1499 | rest = '' |
|
1500 | 1500 | if nargs==0: |
|
1501 | 1501 | # Simple, argument-less aliases |
|
1502 | 1502 | cmd = '%s %s' % (cmd,rest) |
|
1503 | 1503 | else: |
|
1504 | 1504 | # Handle aliases with positional arguments |
|
1505 | 1505 | args = rest.split(None,nargs) |
|
1506 | 1506 | if len(args)< nargs: |
|
1507 | 1507 | error('Alias <%s> requires %s arguments, %s given.' % |
|
1508 | 1508 | (alias,nargs,len(args))) |
|
1509 | 1509 | return |
|
1510 | 1510 | cmd = '%s %s' % (cmd % tuple(args[:nargs]),' '.join(args[nargs:])) |
|
1511 | 1511 | # Now call the macro, evaluating in the user's namespace |
|
1512 | 1512 | try: |
|
1513 | 1513 | self.system(cmd) |
|
1514 | 1514 | except: |
|
1515 | 1515 | self.showtraceback() |
|
1516 | 1516 | |
|
1517 | 1517 | def runlines(self,lines): |
|
1518 | 1518 | """Run a string of one or more lines of source. |
|
1519 | 1519 | |
|
1520 | 1520 | This method is capable of running a string containing multiple source |
|
1521 | 1521 | lines, as if they had been entered at the IPython prompt. Since it |
|
1522 | 1522 | exposes IPython's processing machinery, the given strings can contain |
|
1523 | 1523 | magic calls (%magic), special shell access (!cmd), etc.""" |
|
1524 | 1524 | |
|
1525 | 1525 | # We must start with a clean buffer, in case this is run from an |
|
1526 | 1526 | # interactive IPython session (via a magic, for example). |
|
1527 | 1527 | self.resetbuffer() |
|
1528 | 1528 | lines = lines.split('\n') |
|
1529 | 1529 | more = 0 |
|
1530 | 1530 | for line in lines: |
|
1531 | 1531 | # skip blank lines so we don't mess up the prompt counter, but do |
|
1532 | 1532 | # NOT skip even a blank line if we are in a code block (more is |
|
1533 | 1533 | # true) |
|
1534 | 1534 | if line or more: |
|
1535 | 1535 | more = self.push((self.prefilter(line,more))) |
|
1536 | 1536 | # IPython's runsource returns None if there was an error |
|
1537 | 1537 | # compiling the code. This allows us to stop processing right |
|
1538 | 1538 | # away, so the user gets the error message at the right place. |
|
1539 | 1539 | if more is None: |
|
1540 | 1540 | break |
|
1541 | 1541 | # final newline in case the input didn't have it, so that the code |
|
1542 | 1542 | # actually does get executed |
|
1543 | 1543 | if more: |
|
1544 | 1544 | self.push('\n') |
|
1545 | 1545 | |
|
1546 | 1546 | def runsource(self, source, filename="<input>", symbol="single"): |
|
1547 | 1547 | """Compile and run some source in the interpreter. |
|
1548 | 1548 | |
|
1549 | 1549 | Arguments are as for compile_command(). |
|
1550 | 1550 | |
|
1551 | 1551 | One several things can happen: |
|
1552 | 1552 | |
|
1553 | 1553 | 1) The input is incorrect; compile_command() raised an |
|
1554 | 1554 | exception (SyntaxError or OverflowError). A syntax traceback |
|
1555 | 1555 | will be printed by calling the showsyntaxerror() method. |
|
1556 | 1556 | |
|
1557 | 1557 | 2) The input is incomplete, and more input is required; |
|
1558 | 1558 | compile_command() returned None. Nothing happens. |
|
1559 | 1559 | |
|
1560 | 1560 | 3) The input is complete; compile_command() returned a code |
|
1561 | 1561 | object. The code is executed by calling self.runcode() (which |
|
1562 | 1562 | also handles run-time exceptions, except for SystemExit). |
|
1563 | 1563 | |
|
1564 | 1564 | The return value is: |
|
1565 | 1565 | |
|
1566 | 1566 | - True in case 2 |
|
1567 | 1567 | |
|
1568 | 1568 | - False in the other cases, unless an exception is raised, where |
|
1569 | 1569 | None is returned instead. This can be used by external callers to |
|
1570 | 1570 | know whether to continue feeding input or not. |
|
1571 | 1571 | |
|
1572 | 1572 | The return value can be used to decide whether to use sys.ps1 or |
|
1573 | 1573 | sys.ps2 to prompt the next line.""" |
|
1574 | 1574 | |
|
1575 | 1575 | try: |
|
1576 | 1576 | code = self.compile(source, filename, symbol) |
|
1577 | 1577 | except (OverflowError, SyntaxError, ValueError): |
|
1578 | 1578 | # Case 1 |
|
1579 | 1579 | self.showsyntaxerror(filename) |
|
1580 | 1580 | return None |
|
1581 | 1581 | |
|
1582 | 1582 | if code is None: |
|
1583 | 1583 | # Case 2 |
|
1584 | 1584 | return True |
|
1585 | 1585 | |
|
1586 | 1586 | # Case 3 |
|
1587 | 1587 | # We store the code object so that threaded shells and |
|
1588 | 1588 | # custom exception handlers can access all this info if needed. |
|
1589 | 1589 | # The source corresponding to this can be obtained from the |
|
1590 | 1590 | # buffer attribute as '\n'.join(self.buffer). |
|
1591 | 1591 | self.code_to_run = code |
|
1592 | 1592 | # now actually execute the code object |
|
1593 | 1593 | if self.runcode(code) == 0: |
|
1594 | 1594 | return False |
|
1595 | 1595 | else: |
|
1596 | 1596 | return None |
|
1597 | 1597 | |
|
1598 | 1598 | def runcode(self,code_obj): |
|
1599 | 1599 | """Execute a code object. |
|
1600 | 1600 | |
|
1601 | 1601 | When an exception occurs, self.showtraceback() is called to display a |
|
1602 | 1602 | traceback. |
|
1603 | 1603 | |
|
1604 | 1604 | Return value: a flag indicating whether the code to be run completed |
|
1605 | 1605 | successfully: |
|
1606 | 1606 | |
|
1607 | 1607 | - 0: successful execution. |
|
1608 | 1608 | - 1: an error occurred. |
|
1609 | 1609 | """ |
|
1610 | 1610 | |
|
1611 | 1611 | # Set our own excepthook in case the user code tries to call it |
|
1612 | 1612 | # directly, so that the IPython crash handler doesn't get triggered |
|
1613 | 1613 | old_excepthook,sys.excepthook = sys.excepthook, self.excepthook |
|
1614 | 1614 | outflag = 1 # happens in more places, so it's easier as default |
|
1615 | 1615 | try: |
|
1616 | 1616 | try: |
|
1617 | 1617 | exec code_obj in self.locals |
|
1618 | 1618 | finally: |
|
1619 | 1619 | # Reset our crash handler in place |
|
1620 | 1620 | sys.excepthook = old_excepthook |
|
1621 | 1621 | except SystemExit: |
|
1622 | 1622 | self.resetbuffer() |
|
1623 | 1623 | self.showtraceback() |
|
1624 | 1624 | warn( __builtin__.exit,level=1) |
|
1625 | 1625 | except self.custom_exceptions: |
|
1626 | 1626 | etype,value,tb = sys.exc_info() |
|
1627 | 1627 | self.CustomTB(etype,value,tb) |
|
1628 | 1628 | except: |
|
1629 | 1629 | self.showtraceback() |
|
1630 | 1630 | else: |
|
1631 | 1631 | outflag = 0 |
|
1632 | 1632 | if code.softspace(sys.stdout, 0): |
|
1633 | 1633 | |
|
1634 | 1634 | # Flush out code object which has been run (and source) |
|
1635 | 1635 | self.code_to_run = None |
|
1636 | 1636 | return outflag |
|
1637 | 1637 | |
|
1638 | 1638 | def raw_input(self, prompt=""): |
|
1639 | 1639 | """Write a prompt and read a line. |
|
1640 | 1640 | |
|
1641 | 1641 | The returned line does not include the trailing newline. |
|
1642 | 1642 | When the user enters the EOF key sequence, EOFError is raised. |
|
1643 | 1643 | |
|
1644 | 1644 | The base implementation uses the built-in function |
|
1645 | 1645 | raw_input(); a subclass may replace this with a different |
|
1646 | 1646 | implementation. |
|
1647 | 1647 | """ |
|
1648 | 1648 | return self.prefilter(raw_input_original(prompt), |
|
1649 | 1649 | prompt==self.outputcache.prompt2) |
|
1650 | 1650 | |
|
1651 | 1651 | def split_user_input(self,line): |
|
1652 | 1652 | """Split user input into pre-char, function part and rest.""" |
|
1653 | 1653 | |
|
1654 | 1654 | lsplit = self.line_split.match(line) |
|
1655 | 1655 | if lsplit is None: # no regexp match returns None |
|
1656 | 1656 | try: |
|
1657 | 1657 | iFun,theRest = line.split(None,1) |
|
1658 | 1658 | except ValueError: |
|
1659 | 1659 | iFun,theRest = line,'' |
|
1660 | 1660 | pre = re.match('^(\s*)(.*)',line).groups()[0] |
|
1661 | 1661 | else: |
|
1662 | 1662 | pre,iFun,theRest = lsplit.groups() |
|
1663 | 1663 | |
|
1664 | 1664 | #print 'line:<%s>' % line # dbg |
|
1665 | 1665 | #print 'pre <%s> iFun <%s> rest <%s>' % (pre,iFun.strip(),theRest) # dbg |
|
1666 | 1666 | return pre,iFun.strip(),theRest |
|
1667 | 1667 | |
|
1668 | 1668 | def _prefilter(self, line, continue_prompt): |
|
1669 | 1669 | """Calls different preprocessors, depending on the form of line.""" |
|
1670 | 1670 | |
|
1671 | 1671 | # All handlers *must* return a value, even if it's blank (''). |
|
1672 | 1672 | |
|
1673 | 1673 | # Lines are NOT logged here. Handlers should process the line as |
|
1674 | 1674 | # needed, update the cache AND log it (so that the input cache array |
|
1675 | 1675 | # stays synced). |
|
1676 | 1676 | |
|
1677 | 1677 | # This function is _very_ delicate, and since it's also the one which |
|
1678 | 1678 | # determines IPython's response to user input, it must be as efficient |
|
1679 | 1679 | # as possible. For this reason it has _many_ returns in it, trying |
|
1680 | 1680 | # always to exit as quickly as it can figure out what it needs to do. |
|
1681 | 1681 | |
|
1682 | 1682 | # This function is the main responsible for maintaining IPython's |
|
1683 | 1683 | # behavior respectful of Python's semantics. So be _very_ careful if |
|
1684 | 1684 | # making changes to anything here. |
|
1685 | 1685 | |
|
1686 | 1686 | #..................................................................... |
|
1687 | 1687 | # Code begins |
|
1688 | 1688 | |
|
1689 | 1689 | #if line.startswith('%crash'): raise RuntimeError,'Crash now!' # dbg |
|
1690 | 1690 | |
|
1691 | 1691 | # save the line away in case we crash, so the post-mortem handler can |
|
1692 | 1692 | # record it |
|
1693 | 1693 | self._last_input_line = line |
|
1694 | 1694 | |
|
1695 | 1695 | #print '***line: <%s>' % line # dbg |
|
1696 | 1696 | |
|
1697 | 1697 | # the input history needs to track even empty lines |
|
1698 | 1698 | if not line.strip(): |
|
1699 | 1699 | if not continue_prompt: |
|
1700 | 1700 | self.outputcache.prompt_count -= 1 |
|
1701 | 1701 | return self.handle_normal('',continue_prompt) |
|
1702 | 1702 | |
|
1703 | 1703 | # print '***cont',continue_prompt # dbg |
|
1704 | 1704 | # special handlers are only allowed for single line statements |
|
1705 | 1705 | if continue_prompt and not self.rc.multi_line_specials: |
|
1706 | 1706 | return self.handle_normal(line,continue_prompt) |
|
1707 | 1707 | |
|
1708 | 1708 | # For the rest, we need the structure of the input |
|
1709 | 1709 | pre,iFun,theRest = self.split_user_input(line) |
|
1710 | 1710 | #print 'pre <%s> iFun <%s> rest <%s>' % (pre,iFun,theRest) # dbg |
|
1711 | 1711 | |
|
1712 | 1712 | # First check for explicit escapes in the last/first character |
|
1713 | 1713 | handler = None |
|
1714 | 1714 | if line[-1] == self.ESC_HELP: |
|
1715 | 1715 | handler = self.esc_handlers.get(line[-1]) # the ? can be at the end |
|
1716 | 1716 | if handler is None: |
|
1717 | 1717 | # look at the first character of iFun, NOT of line, so we skip |
|
1718 | 1718 | # leading whitespace in multiline input |
|
1719 | 1719 | handler = self.esc_handlers.get(iFun[0:1]) |
|
1720 | 1720 | if handler is not None: |
|
1721 | 1721 | return handler(line,continue_prompt,pre,iFun,theRest) |
|
1722 | 1722 | # Emacs ipython-mode tags certain input lines |
|
1723 | 1723 | if line.endswith('# PYTHON-MODE'): |
|
1724 | 1724 | return self.handle_emacs(line,continue_prompt) |
|
1725 | 1725 | |
|
1726 | 1726 | # Next, check if we can automatically execute this thing |
|
1727 | 1727 | |
|
1728 | 1728 | # Allow ! in multi-line statements if multi_line_specials is on: |
|
1729 | 1729 | if continue_prompt and self.rc.multi_line_specials and \ |
|
1730 | 1730 | iFun.startswith(self.ESC_SHELL): |
|
1731 | 1731 | return self.handle_shell_escape(line,continue_prompt, |
|
1732 | 1732 | pre=pre,iFun=iFun, |
|
1733 | 1733 | theRest=theRest) |
|
1734 | 1734 | |
|
1735 | 1735 | # Let's try to find if the input line is a magic fn |
|
1736 | 1736 | oinfo = None |
|
1737 | 1737 | if hasattr(self,'magic_'+iFun): |
|
1738 | 1738 | oinfo = self._ofind(iFun) # FIXME - _ofind is part of Magic |
|
1739 | 1739 | if oinfo['ismagic']: |
|
1740 | 1740 | # Be careful not to call magics when a variable assignment is |
|
1741 | 1741 | # being made (ls='hi', for example) |
|
1742 | 1742 | if self.rc.automagic and \ |
|
1743 | 1743 | (len(theRest)==0 or theRest[0] not in '!=()<>,') and \ |
|
1744 | 1744 | (self.rc.multi_line_specials or not continue_prompt): |
|
1745 | 1745 | return self.handle_magic(line,continue_prompt, |
|
1746 | 1746 | pre,iFun,theRest) |
|
1747 | 1747 | else: |
|
1748 | 1748 | return self.handle_normal(line,continue_prompt) |
|
1749 | 1749 | |
|
1750 | 1750 | # If the rest of the line begins with an (in)equality, assginment or |
|
1751 | 1751 | # function call, we should not call _ofind but simply execute it. |
|
1752 | 1752 | # This avoids spurious geattr() accesses on objects upon assignment. |
|
1753 | 1753 | # |
|
1754 | 1754 | # It also allows users to assign to either alias or magic names true |
|
1755 | 1755 | # python variables (the magic/alias systems always take second seat to |
|
1756 | 1756 | # true python code). |
|
1757 | 1757 | if theRest and theRest[0] in '!=()': |
|
1758 | 1758 | return self.handle_normal(line,continue_prompt) |
|
1759 | 1759 | |
|
1760 | 1760 | if oinfo is None: |
|
1761 | 1761 | oinfo = self._ofind(iFun) # FIXME - _ofind is part of Magic |
|
1762 | 1762 | |
|
1763 | 1763 | if not oinfo['found']: |
|
1764 | 1764 | return self.handle_normal(line,continue_prompt) |
|
1765 | 1765 | else: |
|
1766 | 1766 | #print 'iFun <%s> rest <%s>' % (iFun,theRest) # dbg |
|
1767 | 1767 | if oinfo['isalias']: |
|
1768 | 1768 | return self.handle_alias(line,continue_prompt, |
|
1769 | 1769 | pre,iFun,theRest) |
|
1770 | 1770 | |
|
1771 | 1771 | if self.rc.autocall and \ |
|
1772 | 1772 | not self.re_exclude_auto.match(theRest) and \ |
|
1773 | 1773 | self.re_fun_name.match(iFun) and \ |
|
1774 | 1774 | callable(oinfo['obj']) : |
|
1775 | 1775 | #print 'going auto' # dbg |
|
1776 | 1776 | return self.handle_auto(line,continue_prompt,pre,iFun,theRest) |
|
1777 | 1777 | else: |
|
1778 | 1778 | #print 'was callable?', callable(oinfo['obj']) # dbg |
|
1779 | 1779 | return self.handle_normal(line,continue_prompt) |
|
1780 | 1780 | |
|
1781 | 1781 | # If we get here, we have a normal Python line. Log and return. |
|
1782 | 1782 | return self.handle_normal(line,continue_prompt) |
|
1783 | 1783 | |
|
1784 | 1784 | def _prefilter_dumb(self, line, continue_prompt): |
|
1785 | 1785 | """simple prefilter function, for debugging""" |
|
1786 | 1786 | return self.handle_normal(line,continue_prompt) |
|
1787 | 1787 | |
|
1788 | 1788 | # Set the default prefilter() function (this can be user-overridden) |
|
1789 | 1789 | prefilter = _prefilter |
|
1790 | 1790 | |
|
1791 | 1791 | def handle_normal(self,line,continue_prompt=None, |
|
1792 | 1792 | pre=None,iFun=None,theRest=None): |
|
1793 | 1793 | """Handle normal input lines. Use as a template for handlers.""" |
|
1794 | 1794 | |
|
1795 | 1795 | self.log(line,continue_prompt) |
|
1796 | 1796 | self.update_cache(line) |
|
1797 | 1797 | return line |
|
1798 | 1798 | |
|
1799 | 1799 | def handle_alias(self,line,continue_prompt=None, |
|
1800 | 1800 | pre=None,iFun=None,theRest=None): |
|
1801 | 1801 | """Handle alias input lines. """ |
|
1802 | 1802 | |
|
1803 | 1803 | theRest = esc_quotes(theRest) |
|
1804 | 1804 | line_out = "%s%s.call_alias('%s','%s')" % (pre,self.name,iFun,theRest) |
|
1805 | 1805 | self.log(line_out,continue_prompt) |
|
1806 | 1806 | self.update_cache(line_out) |
|
1807 | 1807 | return line_out |
|
1808 | 1808 | |
|
1809 | 1809 | def handle_shell_escape(self, line, continue_prompt=None, |
|
1810 | 1810 | pre=None,iFun=None,theRest=None): |
|
1811 | 1811 | """Execute the line in a shell, empty return value""" |
|
1812 | 1812 | |
|
1813 | 1813 | #print 'line in :', `line` # dbg |
|
1814 | 1814 | # Example of a special handler. Others follow a similar pattern. |
|
1815 | 1815 | if continue_prompt: # multi-line statements |
|
1816 | 1816 | if iFun.startswith('!!'): |
|
1817 | 1817 | print 'SyntaxError: !! is not allowed in multiline statements' |
|
1818 | 1818 | return pre |
|
1819 | 1819 | else: |
|
1820 | 1820 | cmd = ("%s %s" % (iFun[1:],theRest)).replace('"','\\"') |
|
1821 | 1821 | line_out = '%s%s.system("%s")' % (pre,self.name,cmd) |
|
1822 | 1822 | #line_out = ('%s%s.system(' % (pre,self.name)) + repr(cmd) + ')' |
|
1823 | 1823 | else: # single-line input |
|
1824 | 1824 | if line.startswith('!!'): |
|
1825 | 1825 | # rewrite iFun/theRest to properly hold the call to %sx and |
|
1826 | 1826 | # the actual command to be executed, so handle_magic can work |
|
1827 | 1827 | # correctly |
|
1828 | 1828 | theRest = '%s %s' % (iFun[2:],theRest) |
|
1829 | 1829 | iFun = 'sx' |
|
1830 | 1830 | return self.handle_magic('%ssx %s' % (self.ESC_MAGIC,line[2:]), |
|
1831 | 1831 | continue_prompt,pre,iFun,theRest) |
|
1832 | 1832 | else: |
|
1833 | 1833 | cmd = esc_quotes(line[1:]) |
|
1834 | 1834 | line_out = '%s.system("%s")' % (self.name,cmd) |
|
1835 | 1835 | #line_out = ('%s.system(' % self.name) + repr(cmd)+ ')' |
|
1836 | 1836 | # update cache/log and return |
|
1837 | 1837 | self.log(line_out,continue_prompt) |
|
1838 | 1838 | self.update_cache(line_out) # readline cache gets normal line |
|
1839 | 1839 | #print 'line out r:', `line_out` # dbg |
|
1840 | 1840 | #print 'line out s:', line_out # dbg |
|
1841 | 1841 | return line_out |
|
1842 | 1842 | |
|
1843 | 1843 | def handle_magic(self, line, continue_prompt=None, |
|
1844 | 1844 | pre=None,iFun=None,theRest=None): |
|
1845 | 1845 | """Execute magic functions. |
|
1846 | 1846 | |
|
1847 | 1847 | Also log them with a prepended # so the log is clean Python.""" |
|
1848 | 1848 | |
|
1849 | 1849 | cmd = '%sipmagic("%s")' % (pre,esc_quotes('%s %s' % (iFun,theRest))) |
|
1850 | 1850 | self.log(cmd,continue_prompt) |
|
1851 | 1851 | self.update_cache(line) |
|
1852 | 1852 | #print 'in handle_magic, cmd=<%s>' % cmd # dbg |
|
1853 | 1853 | return cmd |
|
1854 | 1854 | |
|
1855 | 1855 | def handle_auto(self, line, continue_prompt=None, |
|
1856 | 1856 | pre=None,iFun=None,theRest=None): |
|
1857 | 1857 | """Hande lines which can be auto-executed, quoting if requested.""" |
|
1858 | 1858 | |
|
1859 | 1859 | #print 'pre <%s> iFun <%s> rest <%s>' % (pre,iFun,theRest) # dbg |
|
1860 | 1860 | |
|
1861 | 1861 | # This should only be active for single-line input! |
|
1862 | 1862 | if continue_prompt: |
|
1863 | 1863 | return line |
|
1864 | 1864 | |
|
1865 | 1865 | if pre == self.ESC_QUOTE: |
|
1866 | 1866 | # Auto-quote splitting on whitespace |
|
1867 |
newcmd = '%s("%s") |
|
|
1867 | newcmd = '%s("%s")' % (iFun,'", "'.join(theRest.split()) ) | |
|
1868 | 1868 | elif pre == self.ESC_QUOTE2: |
|
1869 | 1869 | # Auto-quote whole string |
|
1870 |
newcmd = '%s("%s") |
|
|
1870 | newcmd = '%s("%s")' % (iFun,theRest) | |
|
1871 | 1871 | else: |
|
1872 | 1872 | # Auto-paren |
|
1873 | 1873 | if theRest[0:1] in ('=','['): |
|
1874 | 1874 | # Don't autocall in these cases. They can be either |
|
1875 | 1875 | # rebindings of an existing callable's name, or item access |
|
1876 | 1876 | # for an object which is BOTH callable and implements |
|
1877 | 1877 | # __getitem__. |
|
1878 |
return '%s %s |
|
|
1878 | return '%s %s' % (iFun,theRest) | |
|
1879 | 1879 | if theRest.endswith(';'): |
|
1880 |
newcmd = '%s(%s); |
|
|
1880 | newcmd = '%s(%s);' % (iFun.rstrip(),theRest[:-1]) | |
|
1881 | 1881 | else: |
|
1882 |
newcmd = '%s(%s) |
|
|
1882 | newcmd = '%s(%s)' % (iFun.rstrip(),theRest) | |
|
1883 | 1883 | |
|
1884 |
print >>Term.cout, self.outputcache.prompt1.auto_rewrite() + newcmd |
|
|
1884 | print >>Term.cout, self.outputcache.prompt1.auto_rewrite() + newcmd | |
|
1885 | 1885 | # log what is now valid Python, not the actual user input (without the |
|
1886 | 1886 | # final newline) |
|
1887 |
self.log(newcmd |
|
|
1887 | self.log(newcmd,continue_prompt) | |
|
1888 | 1888 | return newcmd |
|
1889 | 1889 | |
|
1890 | 1890 | def handle_help(self, line, continue_prompt=None, |
|
1891 | 1891 | pre=None,iFun=None,theRest=None): |
|
1892 | 1892 | """Try to get some help for the object. |
|
1893 | 1893 | |
|
1894 | 1894 | obj? or ?obj -> basic information. |
|
1895 | 1895 | obj?? or ??obj -> more details. |
|
1896 | 1896 | """ |
|
1897 | 1897 | |
|
1898 | 1898 | # We need to make sure that we don't process lines which would be |
|
1899 | 1899 | # otherwise valid python, such as "x=1 # what?" |
|
1900 | 1900 | try: |
|
1901 | 1901 | code.compile_command(line) |
|
1902 | 1902 | except SyntaxError: |
|
1903 | 1903 | # We should only handle as help stuff which is NOT valid syntax |
|
1904 | 1904 | if line[0]==self.ESC_HELP: |
|
1905 | 1905 | line = line[1:] |
|
1906 | 1906 | elif line[-1]==self.ESC_HELP: |
|
1907 | 1907 | line = line[:-1] |
|
1908 | 1908 | self.log('#?'+line) |
|
1909 | 1909 | self.update_cache(line) |
|
1910 | 1910 | if line: |
|
1911 | 1911 | self.magic_pinfo(line) |
|
1912 | 1912 | else: |
|
1913 | 1913 | page(self.usage,screen_lines=self.rc.screen_length) |
|
1914 | 1914 | return '' # Empty string is needed here! |
|
1915 | 1915 | except: |
|
1916 | 1916 | # Pass any other exceptions through to the normal handler |
|
1917 | 1917 | return self.handle_normal(line,continue_prompt) |
|
1918 | 1918 | else: |
|
1919 | 1919 | # If the code compiles ok, we should handle it normally |
|
1920 | 1920 | return self.handle_normal(line,continue_prompt) |
|
1921 | 1921 | |
|
1922 | 1922 | def handle_emacs(self,line,continue_prompt=None, |
|
1923 | 1923 | pre=None,iFun=None,theRest=None): |
|
1924 | 1924 | """Handle input lines marked by python-mode.""" |
|
1925 | 1925 | |
|
1926 | 1926 | # Currently, nothing is done. Later more functionality can be added |
|
1927 | 1927 | # here if needed. |
|
1928 | 1928 | |
|
1929 | 1929 | # The input cache shouldn't be updated |
|
1930 | 1930 | |
|
1931 | 1931 | return line |
|
1932 | 1932 | |
|
1933 | 1933 | def write(self,data): |
|
1934 | 1934 | """Write a string to the default output""" |
|
1935 | 1935 | Term.cout.write(data) |
|
1936 | 1936 | |
|
1937 | 1937 | def write_err(self,data): |
|
1938 | 1938 | """Write a string to the default error output""" |
|
1939 | 1939 | Term.cerr.write(data) |
|
1940 | 1940 | |
|
1941 | 1941 | def safe_execfile(self,fname,*where,**kw): |
|
1942 | 1942 | fname = os.path.expanduser(fname) |
|
1943 | 1943 | |
|
1944 | 1944 | # find things also in current directory |
|
1945 | 1945 | dname = os.path.dirname(fname) |
|
1946 | 1946 | if not sys.path.count(dname): |
|
1947 | 1947 | sys.path.append(dname) |
|
1948 | 1948 | |
|
1949 | 1949 | try: |
|
1950 | 1950 | xfile = open(fname) |
|
1951 | 1951 | except: |
|
1952 | 1952 | print >> Term.cerr, \ |
|
1953 | 1953 | 'Could not open file <%s> for safe execution.' % fname |
|
1954 | 1954 | return None |
|
1955 | 1955 | |
|
1956 | 1956 | kw.setdefault('islog',0) |
|
1957 | 1957 | kw.setdefault('quiet',1) |
|
1958 | 1958 | kw.setdefault('exit_ignore',0) |
|
1959 | 1959 | first = xfile.readline() |
|
1960 | 1960 | _LOGHEAD = str(self.LOGHEAD).split('\n',1)[0].strip() |
|
1961 | 1961 | xfile.close() |
|
1962 | 1962 | # line by line execution |
|
1963 | 1963 | if first.startswith(_LOGHEAD) or kw['islog']: |
|
1964 | 1964 | print 'Loading log file <%s> one line at a time...' % fname |
|
1965 | 1965 | if kw['quiet']: |
|
1966 | 1966 | stdout_save = sys.stdout |
|
1967 | 1967 | sys.stdout = StringIO.StringIO() |
|
1968 | 1968 | try: |
|
1969 | 1969 | globs,locs = where[0:2] |
|
1970 | 1970 | except: |
|
1971 | 1971 | try: |
|
1972 | 1972 | globs = locs = where[0] |
|
1973 | 1973 | except: |
|
1974 | 1974 | globs = locs = globals() |
|
1975 | 1975 | badblocks = [] |
|
1976 | 1976 | |
|
1977 | 1977 | # we also need to identify indented blocks of code when replaying |
|
1978 | 1978 | # logs and put them together before passing them to an exec |
|
1979 | 1979 | # statement. This takes a bit of regexp and look-ahead work in the |
|
1980 | 1980 | # file. It's easiest if we swallow the whole thing in memory |
|
1981 | 1981 | # first, and manually walk through the lines list moving the |
|
1982 | 1982 | # counter ourselves. |
|
1983 | 1983 | indent_re = re.compile('\s+\S') |
|
1984 | 1984 | xfile = open(fname) |
|
1985 | 1985 | filelines = xfile.readlines() |
|
1986 | 1986 | xfile.close() |
|
1987 | 1987 | nlines = len(filelines) |
|
1988 | 1988 | lnum = 0 |
|
1989 | 1989 | while lnum < nlines: |
|
1990 | 1990 | line = filelines[lnum] |
|
1991 | 1991 | lnum += 1 |
|
1992 | 1992 | # don't re-insert logger status info into cache |
|
1993 | 1993 | if line.startswith('#log#'): |
|
1994 | 1994 | continue |
|
1995 | 1995 | elif line.startswith('#%s'% self.ESC_MAGIC): |
|
1996 | 1996 | self.update_cache(line[1:]) |
|
1997 | 1997 | line = magic2python(line) |
|
1998 | 1998 | elif line.startswith('#!'): |
|
1999 | 1999 | self.update_cache(line[1:]) |
|
2000 | 2000 | else: |
|
2001 | 2001 | # build a block of code (maybe a single line) for execution |
|
2002 | 2002 | block = line |
|
2003 | 2003 | try: |
|
2004 | 2004 | next = filelines[lnum] # lnum has already incremented |
|
2005 | 2005 | except: |
|
2006 | 2006 | next = None |
|
2007 | 2007 | while next and indent_re.match(next): |
|
2008 | 2008 | block += next |
|
2009 | 2009 | lnum += 1 |
|
2010 | 2010 | try: |
|
2011 | 2011 | next = filelines[lnum] |
|
2012 | 2012 | except: |
|
2013 | 2013 | next = None |
|
2014 | 2014 | # now execute the block of one or more lines |
|
2015 | 2015 | try: |
|
2016 | 2016 | exec block in globs,locs |
|
2017 | 2017 | self.update_cache(block.rstrip()) |
|
2018 | 2018 | except SystemExit: |
|
2019 | 2019 | pass |
|
2020 | 2020 | except: |
|
2021 | 2021 | badblocks.append(block.rstrip()) |
|
2022 | 2022 | if kw['quiet']: # restore stdout |
|
2023 | 2023 | sys.stdout.close() |
|
2024 | 2024 | sys.stdout = stdout_save |
|
2025 | 2025 | print 'Finished replaying log file <%s>' % fname |
|
2026 | 2026 | if badblocks: |
|
2027 | 2027 | print >> sys.stderr, \ |
|
2028 | 2028 | '\nThe following lines/blocks in file <%s> reported errors:' \ |
|
2029 | 2029 | % fname |
|
2030 | 2030 | for badline in badblocks: |
|
2031 | 2031 | print >> sys.stderr, badline |
|
2032 | 2032 | else: # regular file execution |
|
2033 | 2033 | try: |
|
2034 | 2034 | execfile(fname,*where) |
|
2035 | 2035 | except SyntaxError: |
|
2036 | 2036 | etype, evalue = sys.exc_info()[0:2] |
|
2037 | 2037 | self.SyntaxTB(etype,evalue,[]) |
|
2038 | 2038 | warn('Failure executing file: <%s>' % fname) |
|
2039 | 2039 | except SystemExit,status: |
|
2040 | 2040 | if not kw['exit_ignore']: |
|
2041 | 2041 | self.InteractiveTB() |
|
2042 | 2042 | warn('Failure executing file: <%s>' % fname) |
|
2043 | 2043 | except: |
|
2044 | 2044 | self.InteractiveTB() |
|
2045 | 2045 | warn('Failure executing file: <%s>' % fname) |
|
2046 | 2046 | |
|
2047 | 2047 | #************************* end of file <iplib.py> ***************************** |
|
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