217 lines
8.1 KiB
Python
217 lines
8.1 KiB
Python
import django
|
|
from django.core.exceptions import ImproperlyConfigured
|
|
from django.core.management.color import color_style
|
|
import itertools
|
|
from optparse import make_option, OptionParser
|
|
import sys
|
|
import os
|
|
|
|
class CommandError(Exception):
|
|
pass
|
|
|
|
class BaseCommand(object):
|
|
# Metadata about this command.
|
|
option_list = (
|
|
make_option('--settings',
|
|
help='The Python path to a settings module, e.g. "myproject.settings.main". If this isn\'t provided, the DJANGO_SETTINGS_MODULE environment variable will be used.'),
|
|
make_option('--pythonpath',
|
|
help='A directory to add to the Python path, e.g. "/home/djangoprojects/myproject".'),
|
|
)
|
|
help = ''
|
|
args = ''
|
|
|
|
# Configuration shortcuts that alter various logic.
|
|
can_import_settings = True
|
|
requires_model_validation = True
|
|
output_transaction = False # Whether to wrap the output in a "BEGIN; COMMIT;"
|
|
|
|
def __init__(self):
|
|
self.style = color_style()
|
|
|
|
def get_version(self):
|
|
"""
|
|
Returns the Django version, which should be correct for all built-in
|
|
Django commands. User-supplied commands should override this method.
|
|
"""
|
|
return django.get_version()
|
|
|
|
def usage(self, subcommand):
|
|
usage = '%%prog %s [options] %s' % (subcommand, self.args)
|
|
if self.help:
|
|
return '%s\n\n%s' % (usage, self.help)
|
|
else:
|
|
return usage
|
|
|
|
def create_parser(self, prog_name, subcommand):
|
|
return OptionParser(prog=prog_name,
|
|
usage=self.usage(subcommand),
|
|
version=self.get_version(),
|
|
option_list=self.option_list)
|
|
|
|
def print_help(self, prog_name, subcommand):
|
|
parser = self.create_parser(prog_name, subcommand)
|
|
parser.print_help()
|
|
|
|
def run_from_argv(self, argv):
|
|
parser = self.create_parser(argv[0], argv[1])
|
|
options, args = parser.parse_args(argv[2:])
|
|
if options.settings:
|
|
os.environ['DJANGO_SETTINGS_MODULE'] = options.settings
|
|
if options.pythonpath:
|
|
sys.path.insert(0, options.pythonpath)
|
|
self.execute(*args, **options.__dict__)
|
|
|
|
def execute(self, *args, **options):
|
|
# Switch to English, because django-admin.py creates database content
|
|
# like permissions, and those shouldn't contain any translations.
|
|
# But only do this if we can assume we have a working settings file,
|
|
# because django.utils.translation requires settings.
|
|
if self.can_import_settings:
|
|
from django.utils import translation
|
|
translation.activate('en-us')
|
|
|
|
try:
|
|
if self.requires_model_validation:
|
|
self.validate()
|
|
output = self.handle(*args, **options)
|
|
if output:
|
|
if self.output_transaction:
|
|
# This needs to be imported here, because it relies on settings.
|
|
from django.db import connection
|
|
if connection.ops.start_transaction_sql():
|
|
print self.style.SQL_KEYWORD(connection.ops.start_transaction_sql())
|
|
print output
|
|
if self.output_transaction:
|
|
print self.style.SQL_KEYWORD("COMMIT;")
|
|
except CommandError, e:
|
|
sys.stderr.write(self.style.ERROR(str('Error: %s\n' % e)))
|
|
sys.exit(1)
|
|
|
|
def validate(self, app=None, display_num_errors=False):
|
|
"""
|
|
Validates the given app, raising CommandError for any errors.
|
|
|
|
If app is None, then this will validate all installed apps.
|
|
"""
|
|
from django.core.management.validation import get_validation_errors
|
|
try:
|
|
from cStringIO import StringIO
|
|
except ImportError:
|
|
from StringIO import StringIO
|
|
s = StringIO()
|
|
num_errors = get_validation_errors(s, app)
|
|
if num_errors:
|
|
s.seek(0)
|
|
error_text = s.read()
|
|
raise CommandError("One or more models did not validate:\n%s" % error_text)
|
|
if display_num_errors:
|
|
print "%s error%s found" % (num_errors, num_errors != 1 and 's' or '')
|
|
|
|
def handle(self, *args, **options):
|
|
raise NotImplementedError()
|
|
|
|
class AppCommand(BaseCommand):
|
|
args = '<appname appname ...>'
|
|
|
|
def handle(self, *app_labels, **options):
|
|
from django.db import models
|
|
if not app_labels:
|
|
raise CommandError('Enter at least one appname.')
|
|
try:
|
|
app_list = [models.get_app(app_label) for app_label in app_labels]
|
|
except (ImproperlyConfigured, ImportError), e:
|
|
raise CommandError("%s. Are you sure your INSTALLED_APPS setting is correct?" % e)
|
|
output = []
|
|
for app in app_list:
|
|
app_output = self.handle_app(app, **options)
|
|
if app_output:
|
|
output.append(app_output)
|
|
return '\n'.join(output)
|
|
|
|
def handle_app(self, app, **options):
|
|
raise NotImplementedError()
|
|
|
|
class LabelCommand(BaseCommand):
|
|
args = '<label label ...>'
|
|
label = 'label'
|
|
|
|
def handle(self, *labels, **options):
|
|
if not labels:
|
|
raise CommandError('Enter at least one %s.' % self.label)
|
|
|
|
output = []
|
|
for label in labels:
|
|
label_output = self.handle_label(label, **options)
|
|
if label_output:
|
|
output.append(label_output)
|
|
return '\n'.join(output)
|
|
|
|
def handle_label(self, label, **options):
|
|
raise NotImplementedError()
|
|
|
|
class NoArgsCommand(BaseCommand):
|
|
args = ''
|
|
|
|
def handle(self, *args, **options):
|
|
from django.db import models
|
|
if len(args) != 0:
|
|
raise CommandError("Command doesn't accept any arguments")
|
|
|
|
return self.handle_noargs(**options)
|
|
|
|
def handle_noargs(self, **options):
|
|
raise NotImplementedError()
|
|
|
|
def copy_helper(style, app_or_project, name, directory, other_name=''):
|
|
import django
|
|
import re
|
|
import shutil
|
|
other = {'project': 'app', 'app': 'project'}[app_or_project]
|
|
if not re.search(r'^\w+$', name): # If it's not a valid directory name.
|
|
raise CommandError("%r is not a valid %s name. Please use only numbers, letters and underscores." % (name, app_or_project))
|
|
top_dir = os.path.join(directory, name)
|
|
try:
|
|
os.mkdir(top_dir)
|
|
except OSError, e:
|
|
raise CommandError(e)
|
|
|
|
# Determine where the app or project templates are. Use
|
|
# django.__path__[0] because we don't know into which directory
|
|
# django has been installed.
|
|
template_dir = os.path.join(django.__path__[0], 'conf', '%s_template' % app_or_project)
|
|
|
|
for d, subdirs, files in os.walk(template_dir):
|
|
relative_dir = d[len(template_dir)+1:].replace('%s_name' % app_or_project, name)
|
|
if relative_dir:
|
|
os.mkdir(os.path.join(top_dir, relative_dir))
|
|
for i, subdir in enumerate(subdirs):
|
|
if subdir.startswith('.'):
|
|
del subdirs[i]
|
|
for f in files:
|
|
if f.endswith('.pyc'):
|
|
continue
|
|
path_old = os.path.join(d, f)
|
|
path_new = os.path.join(top_dir, relative_dir, f.replace('%s_name' % app_or_project, name))
|
|
fp_old = open(path_old, 'r')
|
|
fp_new = open(path_new, 'w')
|
|
fp_new.write(fp_old.read().replace('{{ %s_name }}' % app_or_project, name).replace('{{ %s_name }}' % other, other_name))
|
|
fp_old.close()
|
|
fp_new.close()
|
|
try:
|
|
shutil.copymode(path_old, path_new)
|
|
_make_writeable(path_new)
|
|
except OSError:
|
|
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))
|
|
|
|
def _make_writeable(filename):
|
|
"Makes sure that the file is writeable. Useful if our source is read-only."
|
|
import stat
|
|
if sys.platform.startswith('java'):
|
|
# On Jython there is no os.access()
|
|
return
|
|
if not os.access(filename, os.W_OK):
|
|
st = os.stat(filename)
|
|
new_permissions = stat.S_IMODE(st.st_mode) | stat.S_IWUSR
|
|
os.chmod(filename, new_permissions)
|
|
|