1 import os

     2 from django.core.management.base import CommandError, AppCommand, _make_writeable

     3 from optparse import make_option

     4 

     5 class Command(AppCommand):

     6     option_list = AppCommand.option_list + (

     7         make_option('--name', '-n', action='store', dest='command_name', default='sample',

     8             help='The name to use for the management command'),

     9         make_option('--base', '-b', action='store', dest='base_command', default='Base',

    10             help='The base class used for implementation of this command. Should be one of Base, App, Label, or NoArgs'),

    11     )

    12     

    13     help = ("Creates a Django management command directory structure for the given app name"

    14             " in the current directory.")

    15     args = "[appname]"

    16     label = 'application name'

    17 

    18     requires_model_validation = False

    19     # Can't import settings during this command, because they haven't

    20     # necessarily been created.

    21     can_import_settings = True

    22 

    23     def handle_app(self, app, **options):

    24         directory = os.getcwd()

    25         app_name = app.__name__.split('.')[-2]

    26         project_dir = os.path.join(directory, app_name)

    27         if not os.path.exists(project_dir):

    28             try:

    29                 os.mkdir(project_dir)

    30             except OSError, e:

    31                 raise CommandError(e)

    32         

    33         copy_template('command_template', project_dir, options.get('command_name'), '%sCommand' % options.get('base_command'))

    34             

    35 def copy_template(template_name, copy_to, command_name, base_command):

    36     """copies the specified template directory to the copy_to location"""

    37     import django_extensions

    38     import re

    39     import shutil

    40     

    41     template_dir = os.path.join(django_extensions.__path__[0], 'conf', template_name)

    42 

    43     handle_method = "handle(self, *args, **options)"

    44     if base_command == 'AppCommand':

    45         handle_method = "handle_app(self, app, **options)"

    46     elif base_command == 'LabelCommand':

    47         handle_method = "handle_label(self, label, **options)"

    48     elif base_command == 'NoArgsCommand':

    49         handle_method = "handle_noargs(self, **options)"

    50     

    51     # walks the template structure and copies it

    52     for d, subdirs, files in os.walk(template_dir):

    53         relative_dir = d[len(template_dir)+1:]

    54         if relative_dir and not os.path.exists(os.path.join(copy_to, relative_dir)):

    55             os.mkdir(os.path.join(copy_to, relative_dir))

    56         for i, subdir in enumerate(subdirs):

    57             if subdir.startswith('.'):

    58                 del subdirs[i]

    59         for f in files:

    60             if f.endswith('.pyc') or f.startswith('.DS_Store'):

    61                 continue

    62             path_old = os.path.join(d, f)

    63             path_new = os.path.join(copy_to, relative_dir, f.replace('sample', command_name))

    64             if os.path.exists(path_new):

    65                 path_new = os.path.join(copy_to, relative_dir, f)

    66                 if os.path.exists(path_new):

    67                     continue

    68             path_new = path_new.rstrip(".tmpl")

    69             fp_old = open(path_old, 'r')

    70             fp_new = open(path_new, 'w')

    71             fp_new.write(fp_old.read().replace('{{ command_name }}', command_name).replace('{{ base_command }}', base_command).replace('{{ handle_method }}', handle_method))

    72             fp_old.close()

    73             fp_new.close()

    74             try:

    75                 shutil.copymode(path_old, path_new)

    76                 _make_writeable(path_new)

    77             except OSError:

    78                 sys.stderr.write(style.NOTICE("Notice: Couldn't set permission bits on %s. You're probably using an uncommon filesystem setup. No problem.\n" % path_new))