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@@ -0,0 +1,20 b'' | |||
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1 | #----------------------------------------------------------------------------- | |
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2 | # Copyright (C) 2012- The IPython Development Team | |
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3 | # | |
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4 | # Distributed under the terms of the BSD License. The full license is in | |
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5 | # the file COPYING, distributed as part of this software. | |
|
6 | #----------------------------------------------------------------------------- | |
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7 | ||
|
8 | import os | |
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9 | ||
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10 | from IPython.utils.tempdir import NamedFileInTemporaryDirectory | |
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11 | ||
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12 | ||
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13 | def test_named_file_in_temporary_directory(): | |
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14 | with NamedFileInTemporaryDirectory('filename') as file: | |
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15 | name = file.name | |
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16 | assert not file.closed | |
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17 | assert os.path.exists(name) | |
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18 | file.write('test') | |
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19 | assert file.closed | |
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20 | assert not os.path.exists(name) |
@@ -1,467 +1,467 b'' | |||
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1 | 1 | # -*- coding: utf-8 -*- |
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2 | 2 | """Frontend of ipython working with python-zmq |
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3 | 3 | |
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4 | 4 | Ipython's frontend, is a ipython interface that send request to kernel and proccess the kernel's outputs. |
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5 | 5 | |
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6 | 6 | For more details, see the ipython-zmq design |
|
7 | 7 | """ |
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8 | 8 | #----------------------------------------------------------------------------- |
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9 | 9 | # Copyright (C) 2011 The IPython Development Team |
|
10 | 10 | # |
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11 | 11 | # Distributed under the terms of the BSD License. The full license is in |
|
12 | 12 | # the file COPYING, distributed as part of this software. |
|
13 | 13 | #----------------------------------------------------------------------------- |
|
14 | 14 | |
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15 | 15 | #----------------------------------------------------------------------------- |
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16 | 16 | # Imports |
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17 | 17 | #----------------------------------------------------------------------------- |
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18 | 18 | from __future__ import print_function |
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19 | 19 | |
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20 | 20 | import bdb |
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21 | 21 | import signal |
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22 | 22 | import os |
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23 | 23 | import sys |
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24 | 24 | import time |
|
25 | import tempfile | |
|
26 | 25 | import subprocess |
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27 | 26 | from io import BytesIO |
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28 | 27 | import base64 |
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29 | 28 | |
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30 | 29 | from Queue import Empty |
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31 | 30 | |
|
32 | 31 | try: |
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33 | 32 | from contextlib import nested |
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34 | 33 | except: |
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35 | 34 | from IPython.utils.nested_context import nested |
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36 | 35 | |
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37 | 36 | from IPython.core.alias import AliasManager, AliasError |
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38 | 37 | from IPython.core import page |
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39 | 38 | from IPython.utils.warn import warn, error, fatal |
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40 | 39 | from IPython.utils import io |
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41 | 40 | from IPython.utils.traitlets import List, Enum, Any |
|
41 | from IPython.utils.tempdir import NamedFileInTemporaryDirectory | |
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42 | 42 | |
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43 | 43 | from IPython.frontend.terminal.interactiveshell import TerminalInteractiveShell |
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44 | 44 | from IPython.frontend.terminal.console.completer import ZMQCompleter |
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45 | 45 | |
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46 | 46 | |
|
47 | 47 | class ZMQTerminalInteractiveShell(TerminalInteractiveShell): |
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48 | 48 | """A subclass of TerminalInteractiveShell that uses the 0MQ kernel""" |
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49 | 49 | _executing = False |
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50 | 50 | |
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51 | 51 | image_handler = Enum(('PIL', 'stream', 'tempfile', 'callable'), |
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52 | 52 | config=True, help= |
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53 | 53 | """ |
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54 | 54 | Handler for image type output. This is useful, for example, |
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55 | 55 | when connecting to the kernel in which pylab inline backend is |
|
56 | 56 | activated. There are four handlers defined. 'PIL': Use |
|
57 | 57 | Python Imaging Library to popup image; 'stream': Use an |
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58 | 58 | external program to show the image. Image will be fed into |
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59 | 59 | the STDIN of the program. You will need to configure |
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60 | 60 | `stream_image_handler`; 'tempfile': Use an external program to |
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61 | 61 | show the image. Image will be saved in a temporally file and |
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62 | 62 | the program is called with the temporally file. You will need |
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63 | 63 | to configure `tempfile_image_handler`; 'callable': You can set |
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64 | 64 | any Python callable which is called with the image data. You |
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65 | 65 | will need to configure `callable_image_handler`. |
|
66 | 66 | """ |
|
67 | 67 | ) |
|
68 | 68 | |
|
69 | 69 | stream_image_handler = List(config=True, help= |
|
70 | 70 | """ |
|
71 | 71 | Command to invoke an image viewer program when you are using |
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72 | 72 | 'stream' image handler. This option is a list of string where |
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73 | 73 | the first element is the command itself and reminders are the |
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74 | 74 | options for the command. Raw image data is given as STDIN to |
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75 | 75 | the program. |
|
76 | 76 | """ |
|
77 | 77 | ) |
|
78 | 78 | |
|
79 | 79 | tempfile_image_handler = List(config=True, help= |
|
80 | 80 | """ |
|
81 | 81 | Command to invoke an image viewer program when you are using |
|
82 | 82 | 'tempfile' image handler. This option is a list of string |
|
83 | 83 | where the first element is the command itself and reminders |
|
84 | 84 | are the options for the command. You can use {file} and |
|
85 | 85 | {format} in the string to represent the location of the |
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86 | 86 | generated image file and image format. |
|
87 | 87 | """ |
|
88 | 88 | ) |
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89 | 89 | |
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90 | 90 | callable_image_handler = Any(config=True, help= |
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91 | 91 | """ |
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92 | 92 | Callable object called via 'callable' image handler with one |
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93 | 93 | argument, `data`, which is `msg["content"]["data"]` where |
|
94 | 94 | `msg` is the message from iopub channel. For exmaple, you can |
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95 | 95 | find base64 encoded PNG data as `data['image/png']`. You can |
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96 | 96 | use {format} in the string to represent the image format. |
|
97 | 97 | """ |
|
98 | 98 | ) |
|
99 | 99 | |
|
100 | 100 | mime_preference = List( |
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101 | 101 | default_value=['image/png', 'image/jpeg', 'image/svg+xml'], |
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102 | 102 | config=True, allow_none=False, help= |
|
103 | 103 | """ |
|
104 | 104 | Preferred object representation MIME type in order. First |
|
105 | 105 | matched MIME type will be used. |
|
106 | 106 | """ |
|
107 | 107 | ) |
|
108 | 108 | |
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109 | 109 | def __init__(self, *args, **kwargs): |
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110 | 110 | self.km = kwargs.pop('kernel_manager') |
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111 | 111 | self.session_id = self.km.session.session |
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112 | 112 | super(ZMQTerminalInteractiveShell, self).__init__(*args, **kwargs) |
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113 | 113 | |
|
114 | 114 | def init_completer(self): |
|
115 | 115 | """Initialize the completion machinery. |
|
116 | 116 | |
|
117 | 117 | This creates completion machinery that can be used by client code, |
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118 | 118 | either interactively in-process (typically triggered by the readline |
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119 | 119 | library), programatically (such as in test suites) or out-of-prcess |
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120 | 120 | (typically over the network by remote frontends). |
|
121 | 121 | """ |
|
122 | 122 | from IPython.core.completerlib import (module_completer, |
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123 | 123 | magic_run_completer, cd_completer) |
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124 | 124 | |
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125 | 125 | self.Completer = ZMQCompleter(self, self.km) |
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126 | 126 | |
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127 | 127 | |
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128 | 128 | self.set_hook('complete_command', module_completer, str_key = 'import') |
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129 | 129 | self.set_hook('complete_command', module_completer, str_key = 'from') |
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130 | 130 | self.set_hook('complete_command', magic_run_completer, str_key = '%run') |
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131 | 131 | self.set_hook('complete_command', cd_completer, str_key = '%cd') |
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132 | 132 | |
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133 | 133 | # Only configure readline if we truly are using readline. IPython can |
|
134 | 134 | # do tab-completion over the network, in GUIs, etc, where readline |
|
135 | 135 | # itself may be absent |
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136 | 136 | if self.has_readline: |
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137 | 137 | self.set_readline_completer() |
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138 | 138 | |
|
139 | 139 | def run_cell(self, cell, store_history=True): |
|
140 | 140 | """Run a complete IPython cell. |
|
141 | 141 | |
|
142 | 142 | Parameters |
|
143 | 143 | ---------- |
|
144 | 144 | cell : str |
|
145 | 145 | The code (including IPython code such as %magic functions) to run. |
|
146 | 146 | store_history : bool |
|
147 | 147 | If True, the raw and translated cell will be stored in IPython's |
|
148 | 148 | history. For user code calling back into IPython's machinery, this |
|
149 | 149 | should be set to False. |
|
150 | 150 | """ |
|
151 | 151 | if (not cell) or cell.isspace(): |
|
152 | 152 | return |
|
153 | 153 | |
|
154 | 154 | if cell.strip() == 'exit': |
|
155 | 155 | # explicitly handle 'exit' command |
|
156 | 156 | return self.ask_exit() |
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157 | 157 | |
|
158 | 158 | self._executing = True |
|
159 | 159 | # flush stale replies, which could have been ignored, due to missed heartbeats |
|
160 | 160 | while self.km.shell_channel.msg_ready(): |
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161 | 161 | self.km.shell_channel.get_msg() |
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162 | 162 | # shell_channel.execute takes 'hidden', which is the inverse of store_hist |
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163 | 163 | msg_id = self.km.shell_channel.execute(cell, not store_history) |
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164 | 164 | while not self.km.shell_channel.msg_ready() and self.km.is_alive: |
|
165 | 165 | try: |
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166 | 166 | self.handle_stdin_request(timeout=0.05) |
|
167 | 167 | except Empty: |
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168 | 168 | # display intermediate print statements, etc. |
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169 | 169 | self.handle_iopub() |
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170 | 170 | pass |
|
171 | 171 | if self.km.shell_channel.msg_ready(): |
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172 | 172 | self.handle_execute_reply(msg_id) |
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173 | 173 | self._executing = False |
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174 | 174 | |
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175 | 175 | #----------------- |
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176 | 176 | # message handlers |
|
177 | 177 | #----------------- |
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178 | 178 | |
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179 | 179 | def handle_execute_reply(self, msg_id): |
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180 | 180 | msg = self.km.shell_channel.get_msg() |
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181 | 181 | if msg["parent_header"].get("msg_id", None) == msg_id: |
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182 | 182 | |
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183 | 183 | self.handle_iopub() |
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184 | 184 | |
|
185 | 185 | content = msg["content"] |
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186 | 186 | status = content['status'] |
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187 | 187 | |
|
188 | 188 | if status == 'aborted': |
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189 | 189 | self.write('Aborted\n') |
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190 | 190 | return |
|
191 | 191 | elif status == 'ok': |
|
192 | 192 | # print execution payloads as well: |
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193 | 193 | for item in content["payload"]: |
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194 | 194 | text = item.get('text', None) |
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195 | 195 | if text: |
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196 | 196 | page.page(text) |
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197 | 197 | |
|
198 | 198 | elif status == 'error': |
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199 | 199 | for frame in content["traceback"]: |
|
200 | 200 | print(frame, file=io.stderr) |
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201 | 201 | |
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202 | 202 | self.execution_count = int(content["execution_count"] + 1) |
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203 | 203 | |
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204 | 204 | |
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205 | 205 | def handle_iopub(self): |
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206 | 206 | """ Method to procces subscribe channel's messages |
|
207 | 207 | |
|
208 | 208 | This method reads a message and processes the content in different |
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209 | 209 | outputs like stdout, stderr, pyout and status |
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210 | 210 | |
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211 | 211 | Arguments: |
|
212 | 212 | sub_msg: message receive from kernel in the sub socket channel |
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213 | 213 | capture by kernel manager. |
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214 | 214 | """ |
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215 | 215 | while self.km.sub_channel.msg_ready(): |
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216 | 216 | sub_msg = self.km.sub_channel.get_msg() |
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217 | 217 | msg_type = sub_msg['header']['msg_type'] |
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218 | 218 | parent = sub_msg["parent_header"] |
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219 | 219 | if (not parent) or self.session_id == parent['session']: |
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220 | 220 | if msg_type == 'status' : |
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221 | 221 | if sub_msg["content"]["execution_state"] == "busy" : |
|
222 | 222 | pass |
|
223 | 223 | |
|
224 | 224 | elif msg_type == 'stream' : |
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225 | 225 | if sub_msg["content"]["name"] == "stdout": |
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226 | 226 | print(sub_msg["content"]["data"], file=io.stdout, end="") |
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227 | 227 | io.stdout.flush() |
|
228 | 228 | elif sub_msg["content"]["name"] == "stderr" : |
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229 | 229 | print(sub_msg["content"]["data"], file=io.stderr, end="") |
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230 | 230 | io.stderr.flush() |
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231 | 231 | |
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232 | 232 | elif msg_type == 'pyout': |
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233 | 233 | self.execution_count = int(sub_msg["content"]["execution_count"]) |
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234 | 234 | format_dict = sub_msg["content"]["data"] |
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235 | 235 | self.handle_rich_data(format_dict) |
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236 | 236 | # taken from DisplayHook.__call__: |
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237 | 237 | hook = self.displayhook |
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238 | 238 | hook.start_displayhook() |
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239 | 239 | hook.write_output_prompt() |
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240 | 240 | hook.write_format_data(format_dict) |
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241 | 241 | hook.log_output(format_dict) |
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242 | 242 | hook.finish_displayhook() |
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243 | 243 | |
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244 | 244 | elif msg_type == 'display_data': |
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245 | 245 | self.handle_rich_data(sub_msg["content"]["data"]) |
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246 | 246 | |
|
247 | 247 | _imagemime = { |
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248 | 248 | 'image/png': 'png', |
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249 | 249 | 'image/jpeg': 'jpeg', |
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250 | 250 | 'image/svg+xml': 'svg', |
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251 | 251 | } |
|
252 | 252 | |
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253 | 253 | def handle_rich_data(self, data): |
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254 | 254 | for mime in self.mime_preference: |
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255 | 255 | if mime in data and mime in self._imagemime: |
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256 | 256 | self.handle_image(data, mime) |
|
257 | 257 | return |
|
258 | 258 | |
|
259 | 259 | def handle_image(self, data, mime): |
|
260 | 260 | handler = getattr( |
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261 | 261 | self, 'handle_image_{0}'.format(self.image_handler), None) |
|
262 | 262 | if handler: |
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263 | 263 | handler(data, mime) |
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264 | 264 | |
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265 | 265 | def handle_image_PIL(self, data, mime): |
|
266 | 266 | if mime not in ('image/png', 'image/jpeg'): |
|
267 | 267 | return |
|
268 | 268 | import PIL |
|
269 | 269 | raw = base64.decodestring(data[mime]) |
|
270 | 270 | img = PIL.Image.open(BytesIO(raw)) |
|
271 | 271 | img.show() |
|
272 | 272 | |
|
273 | 273 | def handle_image_stream(self, data, mime): |
|
274 | 274 | raw = base64.decodestring(data[mime]) |
|
275 | 275 | imageformat = self._imagemime[mime] |
|
276 | 276 | fmt = dict(format=imageformat) |
|
277 | 277 | args = [s.format(**fmt) for s in self.stream_image_handler] |
|
278 | 278 | with open(os.devnull, 'w') as devnull: |
|
279 | 279 | proc = subprocess.Popen( |
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280 | 280 | args, stdin=subprocess.PIPE, |
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281 | 281 | stdout=devnull, stderr=devnull) |
|
282 | 282 | proc.communicate(raw) |
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283 | 283 | |
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284 | 284 | def handle_image_tempfile(self, data, mime): |
|
285 | 285 | raw = base64.decodestring(data[mime]) |
|
286 | 286 | imageformat = self._imagemime[mime] |
|
287 | 287 | ext = '.{0}'.format(imageformat) |
|
288 |
with nested( |
|
|
288 | with nested(NamedFileInTemporaryDirectory('tmp.{0}'.format(ext)), | |
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289 | 289 | open(os.devnull, 'w')) as (f, devnull): |
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290 | 290 | f.write(raw) |
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291 | 291 | f.flush() |
|
292 | 292 | fmt = dict(file=f.name, format=imageformat) |
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293 | 293 | args = [s.format(**fmt) for s in self.tempfile_image_handler] |
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294 | 294 | subprocess.call(args, stdout=devnull, stderr=devnull) |
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295 | 295 | |
|
296 | 296 | def handle_image_callable(self, data, mime): |
|
297 | 297 | self.callable_image_handler(data) |
|
298 | 298 | |
|
299 | 299 | def handle_stdin_request(self, timeout=0.1): |
|
300 | 300 | """ Method to capture raw_input |
|
301 | 301 | """ |
|
302 | 302 | msg_rep = self.km.stdin_channel.get_msg(timeout=timeout) |
|
303 | 303 | # in case any iopub came while we were waiting: |
|
304 | 304 | self.handle_iopub() |
|
305 | 305 | if self.session_id == msg_rep["parent_header"].get("session"): |
|
306 | 306 | # wrap SIGINT handler |
|
307 | 307 | real_handler = signal.getsignal(signal.SIGINT) |
|
308 | 308 | def double_int(sig,frame): |
|
309 | 309 | # call real handler (forwards sigint to kernel), |
|
310 | 310 | # then raise local interrupt, stopping local raw_input |
|
311 | 311 | real_handler(sig,frame) |
|
312 | 312 | raise KeyboardInterrupt |
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313 | 313 | signal.signal(signal.SIGINT, double_int) |
|
314 | 314 | |
|
315 | 315 | try: |
|
316 | 316 | raw_data = raw_input(msg_rep["content"]["prompt"]) |
|
317 | 317 | except EOFError: |
|
318 | 318 | # turn EOFError into EOF character |
|
319 | 319 | raw_data = '\x04' |
|
320 | 320 | except KeyboardInterrupt: |
|
321 | 321 | sys.stdout.write('\n') |
|
322 | 322 | return |
|
323 | 323 | finally: |
|
324 | 324 | # restore SIGINT handler |
|
325 | 325 | signal.signal(signal.SIGINT, real_handler) |
|
326 | 326 | |
|
327 | 327 | # only send stdin reply if there *was not* another request |
|
328 | 328 | # or execution finished while we were reading. |
|
329 | 329 | if not (self.km.stdin_channel.msg_ready() or self.km.shell_channel.msg_ready()): |
|
330 | 330 | self.km.stdin_channel.input(raw_data) |
|
331 | 331 | |
|
332 | 332 | def mainloop(self, display_banner=False): |
|
333 | 333 | while True: |
|
334 | 334 | try: |
|
335 | 335 | self.interact(display_banner=display_banner) |
|
336 | 336 | #self.interact_with_readline() |
|
337 | 337 | # XXX for testing of a readline-decoupled repl loop, call |
|
338 | 338 | # interact_with_readline above |
|
339 | 339 | break |
|
340 | 340 | except KeyboardInterrupt: |
|
341 | 341 | # this should not be necessary, but KeyboardInterrupt |
|
342 | 342 | # handling seems rather unpredictable... |
|
343 | 343 | self.write("\nKeyboardInterrupt in interact()\n") |
|
344 | 344 | |
|
345 | 345 | def wait_for_kernel(self, timeout=None): |
|
346 | 346 | """method to wait for a kernel to be ready""" |
|
347 | 347 | tic = time.time() |
|
348 | 348 | self.km.hb_channel.unpause() |
|
349 | 349 | while True: |
|
350 | 350 | self.run_cell('1', False) |
|
351 | 351 | if self.km.hb_channel.is_beating(): |
|
352 | 352 | # heart failure was not the reason this returned |
|
353 | 353 | break |
|
354 | 354 | else: |
|
355 | 355 | # heart failed |
|
356 | 356 | if timeout is not None and (time.time() - tic) > timeout: |
|
357 | 357 | return False |
|
358 | 358 | return True |
|
359 | 359 | |
|
360 | 360 | def interact(self, display_banner=None): |
|
361 | 361 | """Closely emulate the interactive Python console.""" |
|
362 | 362 | |
|
363 | 363 | # batch run -> do not interact |
|
364 | 364 | if self.exit_now: |
|
365 | 365 | return |
|
366 | 366 | |
|
367 | 367 | if display_banner is None: |
|
368 | 368 | display_banner = self.display_banner |
|
369 | 369 | |
|
370 | 370 | if isinstance(display_banner, basestring): |
|
371 | 371 | self.show_banner(display_banner) |
|
372 | 372 | elif display_banner: |
|
373 | 373 | self.show_banner() |
|
374 | 374 | |
|
375 | 375 | more = False |
|
376 | 376 | |
|
377 | 377 | # run a non-empty no-op, so that we don't get a prompt until |
|
378 | 378 | # we know the kernel is ready. This keeps the connection |
|
379 | 379 | # message above the first prompt. |
|
380 | 380 | if not self.wait_for_kernel(3): |
|
381 | 381 | error("Kernel did not respond\n") |
|
382 | 382 | return |
|
383 | 383 | |
|
384 | 384 | if self.has_readline: |
|
385 | 385 | self.readline_startup_hook(self.pre_readline) |
|
386 | 386 | hlen_b4_cell = self.readline.get_current_history_length() |
|
387 | 387 | else: |
|
388 | 388 | hlen_b4_cell = 0 |
|
389 | 389 | # exit_now is set by a call to %Exit or %Quit, through the |
|
390 | 390 | # ask_exit callback. |
|
391 | 391 | |
|
392 | 392 | while not self.exit_now: |
|
393 | 393 | if not self.km.is_alive: |
|
394 | 394 | # kernel died, prompt for action or exit |
|
395 | 395 | action = "restart" if self.km.has_kernel else "wait for restart" |
|
396 | 396 | ans = self.ask_yes_no("kernel died, %s ([y]/n)?" % action, default='y') |
|
397 | 397 | if ans: |
|
398 | 398 | if self.km.has_kernel: |
|
399 | 399 | self.km.restart_kernel(True) |
|
400 | 400 | self.wait_for_kernel(3) |
|
401 | 401 | else: |
|
402 | 402 | self.exit_now = True |
|
403 | 403 | continue |
|
404 | 404 | try: |
|
405 | 405 | # protect prompt block from KeyboardInterrupt |
|
406 | 406 | # when sitting on ctrl-C |
|
407 | 407 | self.hooks.pre_prompt_hook() |
|
408 | 408 | if more: |
|
409 | 409 | try: |
|
410 | 410 | prompt = self.prompt_manager.render('in2') |
|
411 | 411 | except Exception: |
|
412 | 412 | self.showtraceback() |
|
413 | 413 | if self.autoindent: |
|
414 | 414 | self.rl_do_indent = True |
|
415 | 415 | |
|
416 | 416 | else: |
|
417 | 417 | try: |
|
418 | 418 | prompt = self.separate_in + self.prompt_manager.render('in') |
|
419 | 419 | except Exception: |
|
420 | 420 | self.showtraceback() |
|
421 | 421 | |
|
422 | 422 | line = self.raw_input(prompt) |
|
423 | 423 | if self.exit_now: |
|
424 | 424 | # quick exit on sys.std[in|out] close |
|
425 | 425 | break |
|
426 | 426 | if self.autoindent: |
|
427 | 427 | self.rl_do_indent = False |
|
428 | 428 | |
|
429 | 429 | except KeyboardInterrupt: |
|
430 | 430 | #double-guard against keyboardinterrupts during kbdint handling |
|
431 | 431 | try: |
|
432 | 432 | self.write('\nKeyboardInterrupt\n') |
|
433 | 433 | source_raw = self.input_splitter.source_raw_reset()[1] |
|
434 | 434 | hlen_b4_cell = self._replace_rlhist_multiline(source_raw, hlen_b4_cell) |
|
435 | 435 | more = False |
|
436 | 436 | except KeyboardInterrupt: |
|
437 | 437 | pass |
|
438 | 438 | except EOFError: |
|
439 | 439 | if self.autoindent: |
|
440 | 440 | self.rl_do_indent = False |
|
441 | 441 | if self.has_readline: |
|
442 | 442 | self.readline_startup_hook(None) |
|
443 | 443 | self.write('\n') |
|
444 | 444 | self.exit() |
|
445 | 445 | except bdb.BdbQuit: |
|
446 | 446 | warn('The Python debugger has exited with a BdbQuit exception.\n' |
|
447 | 447 | 'Because of how pdb handles the stack, it is impossible\n' |
|
448 | 448 | 'for IPython to properly format this particular exception.\n' |
|
449 | 449 | 'IPython will resume normal operation.') |
|
450 | 450 | except: |
|
451 | 451 | # exceptions here are VERY RARE, but they can be triggered |
|
452 | 452 | # asynchronously by signal handlers, for example. |
|
453 | 453 | self.showtraceback() |
|
454 | 454 | else: |
|
455 | 455 | self.input_splitter.push(line) |
|
456 | 456 | more = self.input_splitter.push_accepts_more() |
|
457 | 457 | if (self.SyntaxTB.last_syntax_error and |
|
458 | 458 | self.autoedit_syntax): |
|
459 | 459 | self.edit_syntax_error() |
|
460 | 460 | if not more: |
|
461 | 461 | source_raw = self.input_splitter.source_raw_reset()[1] |
|
462 | 462 | hlen_b4_cell = self._replace_rlhist_multiline(source_raw, hlen_b4_cell) |
|
463 | 463 | self.run_cell(source_raw) |
|
464 | 464 | |
|
465 | 465 | |
|
466 | 466 | # Turn off the exit flag, so the mainloop can be restarted if desired |
|
467 | 467 | self.exit_now = False |
@@ -1,76 +1,106 b'' | |||
|
1 | 1 | """TemporaryDirectory class, copied from Python 3.2. |
|
2 | 2 | |
|
3 | 3 | This is copied from the stdlib and will be standard in Python 3.2 and onwards. |
|
4 | 4 | """ |
|
5 | 5 | |
|
6 | import os as _os | |
|
7 | ||
|
6 | 8 | # This code should only be used in Python versions < 3.2, since after that we |
|
7 | 9 | # can rely on the stdlib itself. |
|
8 | 10 | try: |
|
9 | 11 | from tempfile import TemporaryDirectory |
|
10 | 12 | |
|
11 | 13 | except ImportError: |
|
12 | ||
|
13 | import os as _os | |
|
14 | 14 | from tempfile import mkdtemp, template |
|
15 | 15 | |
|
16 | 16 | class TemporaryDirectory(object): |
|
17 | 17 | """Create and return a temporary directory. This has the same |
|
18 | 18 | behavior as mkdtemp but can be used as a context manager. For |
|
19 | 19 | example: |
|
20 | 20 | |
|
21 | 21 | with TemporaryDirectory() as tmpdir: |
|
22 | 22 | ... |
|
23 | 23 | |
|
24 | 24 | Upon exiting the context, the directory and everthing contained |
|
25 | 25 | in it are removed. |
|
26 | 26 | """ |
|
27 | 27 | |
|
28 | 28 | def __init__(self, suffix="", prefix=template, dir=None): |
|
29 | 29 | self.name = mkdtemp(suffix, prefix, dir) |
|
30 | 30 | self._closed = False |
|
31 | 31 | |
|
32 | 32 | def __enter__(self): |
|
33 | 33 | return self.name |
|
34 | 34 | |
|
35 | 35 | def cleanup(self): |
|
36 | 36 | if not self._closed: |
|
37 | 37 | self._rmtree(self.name) |
|
38 | 38 | self._closed = True |
|
39 | 39 | |
|
40 | 40 | def __exit__(self, exc, value, tb): |
|
41 | 41 | self.cleanup() |
|
42 | 42 | |
|
43 | 43 | __del__ = cleanup |
|
44 | 44 | |
|
45 | 45 | |
|
46 | 46 | # XXX (ncoghlan): The following code attempts to make |
|
47 | 47 | # this class tolerant of the module nulling out process |
|
48 | 48 | # that happens during CPython interpreter shutdown |
|
49 | 49 | # Alas, it doesn't actually manage it. See issue #10188 |
|
50 | 50 | _listdir = staticmethod(_os.listdir) |
|
51 | 51 | _path_join = staticmethod(_os.path.join) |
|
52 | 52 | _isdir = staticmethod(_os.path.isdir) |
|
53 | 53 | _remove = staticmethod(_os.remove) |
|
54 | 54 | _rmdir = staticmethod(_os.rmdir) |
|
55 | 55 | _os_error = _os.error |
|
56 | 56 | |
|
57 | 57 | def _rmtree(self, path): |
|
58 | 58 | # Essentially a stripped down version of shutil.rmtree. We can't |
|
59 | 59 | # use globals because they may be None'ed out at shutdown. |
|
60 | 60 | for name in self._listdir(path): |
|
61 | 61 | fullname = self._path_join(path, name) |
|
62 | 62 | try: |
|
63 | 63 | isdir = self._isdir(fullname) |
|
64 | 64 | except self._os_error: |
|
65 | 65 | isdir = False |
|
66 | 66 | if isdir: |
|
67 | 67 | self._rmtree(fullname) |
|
68 | 68 | else: |
|
69 | 69 | try: |
|
70 | 70 | self._remove(fullname) |
|
71 | 71 | except self._os_error: |
|
72 | 72 | pass |
|
73 | 73 | try: |
|
74 | 74 | self._rmdir(path) |
|
75 | 75 | except self._os_error: |
|
76 | 76 | pass |
|
77 | ||
|
78 | ||
|
79 | class NamedFileInTemporaryDirectory(object): | |
|
80 | ||
|
81 | def __init__(self, filename, mode='w+b', bufsize=-1, **kwds): | |
|
82 | """ | |
|
83 | Open a file named `filename` in a temporary directory. | |
|
84 | ||
|
85 | This context manager is preferred over `NamedTemporaryFile` in | |
|
86 | stdlib `tempfile` when one needs to reopen the file. | |
|
87 | ||
|
88 | Arguments `mode` and `bufsize` are passed to `open`. | |
|
89 | Rest of the arguments are passed to `TemporaryDirectory`. | |
|
90 | ||
|
91 | """ | |
|
92 | self._tmpdir = TemporaryDirectory(**kwds) | |
|
93 | path = _os.path.join(self._tmpdir.name, filename) | |
|
94 | self.file = open(path, mode, bufsize) | |
|
95 | ||
|
96 | def cleanup(self): | |
|
97 | self.file.close() | |
|
98 | self._tmpdir.cleanup() | |
|
99 | ||
|
100 | __del__ = cleanup | |
|
101 | ||
|
102 | def __enter__(self): | |
|
103 | return self.file | |
|
104 | ||
|
105 | def __exit__(self, type, value, traceback): | |
|
106 | self.cleanup() |
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