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#!/usr/bin/python
import getopt, sys, os, string, urllib, re, configparser
import settings

#__doc__="Usage: "+sys.argv[0]+" <local repository directory> <action> [<action arguments>...]"

def list_configured_drivers():
    #all .cfg files which end in .cfg as they should
    return [x[:-len('.cfg')] for x in os.listdir(settings.GLOBAL_CONF_DIR) if x[-len('.cfg'):]=='.cfg']

#read key=value file to dict
def read_config(conf_file,defaults={}):
    return configparser.ConfigParser(conf_file,defaults).items('DEFAULTS')

#returns dict of key=value config file
def read_driver_config(driver_name):
    conffile=os.path.join('/etc/g-common',driver_name+'.cfg')
    return read_config(conffile,{
        #'name':None,
        #'executable':None,
        })
    return configs #dict

#read g-common config for a repo
def read_repo_config(repo_location):
    hidden_conffile=os.path.join(repo_location,settings.MYDIR,'conf')
    return read_config(hidden_conffile)

#sync a local repository's PACKAGES file
def action_sync(repo_location,remote_uri):
    #todo
    raise NotImplementedError

#list categories in this repositorie
def list_categories(repo_location):
    #todo
    raise NotImplementedError

#idem ditto
def list_packages(repo_location):
    #todo
    raise NotImplementedError

#generate a tree of ebuilds... note that we only link ebuild files
#metadata.xml and Manifest and whatnot is not generated
def generate_tree(repo_location):
    #todo
    raise NotImplementedError

#list package details, in PMS's format
def action_package(repo_location,package_name):
    #todo
    raise NotImplementedError

def usage():
    print __doc__

def main():
    arguments=sys.argv[1:]
    #print options, arguments
    if len(arguments)<2: #we need at least a local repository location and an action
        usage()
        sys.exit(0)
    action=arguments[1]
    repo_location=os.path.abspath(arguments[0])
    if action=='sync':
        if len(arguments)<3:
            print "The 'sync' action takes the following parameters:"
            print " * remote_repository_uri"
            sys.exit(1)
        remote_repo=arguments[2]
        action_sync(repo_location,remote_repo)
    elif action=='list-categories':
        list_categories(repo_location)
    elif action=='list-packages':
        list_packages(repo_location)
    elif action=='generate-tree':
        generate_tree(repo_location)
    elif action=='package':
        if len(arguments)<3:
            print "The 'package' action takes the following parameters:"
            print " * category/package_name"
            print " * [version]"
            sys.exit(1)
        package_name=arguments[2]
        action_package(repo_location,package_name)
    elif action=='usage':
        usage()
    elif action in pms_phases:
        #todo
        raise NotImplementedError
    elif action in actions_wanted:
        raise NotImplementedError
    else:
        usage()
    sys.exit(0)

if __name__ == "__main__":
    main()