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 14 _CONTACT = 'iancottrell (at] chromium.org' 15 16 17 def Main(): 18 """Chromium cr tool main function. 19 20 This is the main entry point of the cr tool, it finds and loads all the 21 plugins, creates the context and then activates and runs the specified 22 command. 23 """ 24 25 # Add the users plugin dir to the cr.auto.user package scan 26 user_path = os.path.expanduser(os.path.join('~', '.config', 'cr')) 27 cr.auto.user.__path__.append(user_path) 28 29 cr.loader.Scan() 30 31 # Build the command context 32 with cr.base.context.Create( 33 description='The chrome dev build tool.', 34 epilog='Contact ' + _CONTACT + ' if you have issues with this tool.', 35 ) as context: 36 37 # Try to detect the current client information 38 cr.base.client.DetectClient() 39 40 # Install the sub-commands 41 for command in cr.Command.Plugins(): 42 cr.context.AddSubParser(command) 43 44 # test for the special autocomplete command 45 if cr.context.autocompleting: 46 # After plugins are loaded so pylint: disable=g-import-not-at-top 47 cr.autocomplete.Complete() 48 return 49 # Speculative argument processing to add config specific args 50 cr.context.ParseArgs(True) 51 cr.plugin.Activate() 52 # At this point we should know what command we are going to use 53 command = cr.Command.GetActivePlugin() 54 # Do some early processing, in case it changes the build dir 55 if command: 56 command.EarlyArgProcessing() 57 # Update the activated set again, in case the early processing changed it 58 cr.plugin.Activate() 59 # Load the build specific configuration 60 found_build_dir = cr.base.client.LoadConfig() 61 # Final processing or arguments 62 cr.context.ParseArgs() 63 cr.plugin.Activate() 64 # If we did not get a command before, it might have been fixed. 65 if command is None: 66 command = cr.Command.GetActivePlugin() 67 # If the verbosity level is 3 or greater, then print the environment here 68 if cr.context.verbose >= 3: 69 cr.context.DumpValues(cr.context.verbose > 3) 70 if command is None: 71 print cr.context.Substitute('No command specified.') 72 exit(1) 73 if command.requires_build_dir: 74 if not found_build_dir: 75 if not cr.context.Find('CR_OUT_FULL'): 76 print cr.context.Substitute( 77 'No build directory specified. Please use cr init to make one.') 78 else: 79 print cr.context.Substitute( 80 'Build {CR_BUILD_DIR} not a valid build directory') 81 exit(1) 82 if cr.context.Find('CR_VERSION') != cr.base.client.VERSION: 83 print cr.context.Substitute( 84 'Build {CR_BUILD_DIR} is for the wrong version of cr') 85 print 'Please run cr init to reset it' 86 exit(1) 87 cr.Platform.Prepare() 88 if cr.context.verbose >= 1: 89 print cr.context.Substitute( 90 'Running cr ' + command.name + ' for {CR_BUILD_DIR}') 91 # Invoke the given command 92 command.Run() 93 94 if __name__ == '__main__': 95 sys.exit(Main()) 96
