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# -*- coding: utf-8 -*-
import os
import sys
import shutil
from typing import List
from django.core.management.base import AppCommand
from django.core.management.color import color_style
from django_extensions.management.utils import _make_writeable, signalcommand
class Command(AppCommand):
help = "Creates a Django management command directory structure for the given app "
"name in the app's directory."
requires_system_checks: List[str] = []
# Can't import settings during this command, because they haven't
# necessarily been created.
can_import_settings = True
def add_arguments(self, parser):
super().add_arguments(parser)
parser.add_argument(
"--name",
"-n",
action="store",
dest="command_name",
default="sample",
help="The name to use for the management command",
)
parser.add_argument(
"--base",
"-b",
action="store",
dest="base_command",
default="Base",
help="The base class used for implementation of "
"this command. Should be one of Base, App, Label, or NoArgs",
)
parser.add_argument(
"--dry-run",
action="store_true",
default=False,
help="Do not actually create any files",
)
@signalcommand
def handle_app_config(self, args, **options):
app = args
copy_template("command_template", app.path, **options)
def copy_template(template_name, copy_to, **options):
"""Copy the specified template directory to the copy_to location"""
import django_extensions
style = color_style()
ERROR = getattr(style, "ERROR", lambda x: x)
SUCCESS = getattr(style, "SUCCESS", lambda x: x)
command_name, base_command = (
options["command_name"],
"%sCommand" % options["base_command"],
)
dry_run = options["dry_run"]
verbosity = options["verbosity"]
template_dir = os.path.join(django_extensions.__path__[0], "conf", template_name)
# walk the template structure and copies it
for d, subdirs, files in os.walk(template_dir):
relative_dir = d[len(template_dir) + 1 :]
if relative_dir and not os.path.exists(os.path.join(copy_to, relative_dir)):
if not dry_run:
os.mkdir(os.path.join(copy_to, relative_dir))
for i, subdir in enumerate(subdirs):
if subdir.startswith("."):
del subdirs[i]
for f in files:
if f.endswith((".pyc", ".pyo")) or f.startswith(
(".DS_Store", "__pycache__")
):
continue
path_old = os.path.join(d, f)
path_new = os.path.join(
copy_to, relative_dir, f.replace("sample", command_name)
).rstrip(".tmpl")
if os.path.exists(path_new):
path_new = os.path.join(copy_to, relative_dir, f).rstrip(".tmpl")
if os.path.exists(path_new):
if verbosity > 1:
print(ERROR("%s already exists" % path_new))
continue
if verbosity > 1:
print(SUCCESS("%s" % path_new))
with open(path_old, "r") as fp_orig:
data = fp_orig.read()
data = data.replace("{{ command_name }}", command_name)
data = data.replace("{{ base_command }}", base_command)
if not dry_run:
with open(path_new, "w") as fp_new:
fp_new.write(data)
if not dry_run:
try:
shutil.copymode(path_old, path_new)
_make_writeable(path_new)
except OSError:
sys.stderr.write(
"Notice: Couldn't set permission bits on %s. You're probably using an uncommon filesystem setup. No problem.\n" # noqa: E501
% path_new
)
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