1 import os

     2 import re

     3 import django_extensions

     4 from django.core.management.base import CommandError, LabelCommand, _make_writeable

     5 from optparse import make_option

     6 

     7 class Command(LabelCommand):

     8     option_list = LabelCommand.option_list + (

     9         make_option('--template', '-t', action='store', dest='app_template', 

    10             help='The path to the app template'),

    11         make_option('--parent_path', '-p', action='store', dest='parent_path', 

    12             help='The parent path of the app to be created'),

    13     )

    14     

    15     help = ("Creates a Django application directory structure based on the specified template directory.")

    16     args = "[appname]"

    17     label = 'application name'

    18     

    19     requires_model_validation = False

    20     can_import_settings = True

    21     

    22     def handle_label(self, label, **options):

    23         project_dir = os.getcwd()

    24         project_name = os.path.split(project_dir)[-1]

    25         app_name =label

    26         app_template = options.get('app_template') or os.path.join(django_extensions.__path__[0], 'conf', 'app_template')

    27         app_dir = os.path.join(options.get('parent_path') or project_dir, app_name)

    28                 

    29         if not os.path.exists(app_template):

    30             raise CommandError("The template path, %r, does not exist." % app_template)

    31         

    32         if not re.search(r'^\w+$', label):

    33             raise CommandError("%r is not a valid application name. Please use only numbers, letters and underscores." % label)

    34         try:

    35             os.makedirs(app_dir)

    36         except OSError, e:

    37             raise CommandError(e)

    38         

    39         copy_template(app_template, app_dir, project_name, app_name)

    40         

    41 def copy_template(app_template, copy_to, project_name, app_name):

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

    43     import shutil

    44     

    45     # walks the template structure and copies it

    46     for d, subdirs, files in os.walk(app_template):

    47         relative_dir = d[len(app_template)+1:]

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

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

    50         for i, subdir in enumerate(subdirs):

    51             if subdir.startswith('.'):

    52                 del subdirs[i]

    53         for f in files:

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

    55                 continue

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

    57             path_new = os.path.join(copy_to, relative_dir, f.replace('app_name', app_name))

    58             if os.path.exists(path_new):

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

    60                 if os.path.exists(path_new):

    61                     continue

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

    63             fp_old = open(path_old, 'r')

    64             fp_new = open(path_new, 'w')

    65             fp_new.write(fp_old.read().replace('{{ app_name }}', app_name).replace('{{ project_name }}', project_name))

    66             fp_old.close()

    67             fp_new.close()

    68             try:

    69                 shutil.copymode(path_old, path_new)

    70                 _make_writeable(path_new)

    71             except OSError:

    72                 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))