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1 # Copyright 2013 The Chromium Authors. All rights reserved. | |
2 # Use of this source code is governed by a BSD-style license that can be | |
3 # found in the LICENSE file. | |
4 | |
5 """Chromium cr tool main module. | |
6 | |
7 Holds the main function and all it's support code. | |
8 """ | |
9 | |
10 import os | |
11 import sys | |
12 import cr | |
13 import cr.auto.user | |
14 import cr.autocomplete | |
15 import cr.loader | |
16 | |
17 _CONTACT = 'iancottrell@chromium.org' | |
18 | |
19 | |
20 def Main(): | |
21 """Chromium cr tool main function. | |
22 | |
23 This is the main entry point of the cr tool, it finds and loads all the | |
24 plugins, creates the context and then activates and runs the specified | |
25 command. | |
26 """ | |
27 | |
28 # Add the users plugin dir to the cr.auto.user package scan | |
29 user_path = os.path.expanduser(os.path.join('~', '.config', 'cr')) | |
30 cr.auto.user.__path__.append(user_path) | |
31 | |
32 cr.loader.Scan() | |
33 | |
34 # Build the command context | |
35 context = cr.Context( | |
36 description='The chrome dev build tool.', | |
37 epilog='Contact ' + _CONTACT + ' if you have issues with this tool.', | |
38 ) | |
39 # Install the sub-commands | |
40 for command in cr.Command.Plugins(): | |
41 context.AddSubParser(command) | |
42 | |
43 # test for the special autocomplete command | |
44 if context.autocompleting: | |
45 # After plugins are loaded so pylint: disable=g-import-not-at-top | |
46 cr.autocomplete.Complete(context) | |
47 return | |
48 # Speculative argument processing to add config specific args | |
49 context.ParseArgs(True) | |
50 cr.plugin.Activate(context) | |
51 # At this point we should know what command we are going to use | |
52 command = cr.Command.GetActivePlugin(context) | |
53 # Do some early processing, in case it changes the build dir | |
54 if command: | |
55 command.EarlyArgProcessing(context) | |
56 # Update the activated set again, in case the early processing changed it | |
57 cr.plugin.Activate(context) | |
58 # Load the build specific configuration | |
59 found_build_dir = cr.base.client.LoadConfig(context) | |
60 # Final processing or arguments | |
61 context.ParseArgs() | |
62 cr.plugin.Activate(context) | |
63 # If we did not get a command before, it might have been fixed. | |
64 if command is None: | |
65 command = cr.Command.GetActivePlugin(context) | |
66 # If the verbosity level is 3 or greater, then print the environment here | |
67 if context.verbose >= 3: | |
68 context.DumpValues(context.verbose > 3) | |
69 if command is None: | |
70 print context.Substitute('No command specified.') | |
71 exit(1) | |
72 if command.requires_build_dir: | |
73 if not found_build_dir: | |
74 if not context.Find('CR_OUT_FULL'): | |
75 print context.Substitute( | |
76 'No build directory specified. Please use cr init to make one.') | |
77 else: | |
78 print context.Substitute( | |
79 'Build {CR_BUILD_DIR} not a valid build directory') | |
80 exit(1) | |
81 if context.Find('CR_VERSION') != cr.base.client.VERSION: | |
82 print context.Substitute( | |
83 'Build {CR_BUILD_DIR} is for the wrong version of cr') | |
84 print 'Please run cr init to reset it' | |
85 exit(1) | |
86 cr.Platform.Prepare(context) | |
87 if context.verbose >= 1: | |
88 print context.Substitute( | |
89 'Running cr ' + command.name + ' for {CR_BUILD_DIR}') | |
90 # Invoke the given command | |
91 command.Run(context) | |
92 | |
93 if __name__ == '__main__': | |
94 sys.exit(Main()) | |
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