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from __future__ import with_statement
from fabric import api
from fabric.contrib import django
import os

# Configuration
ENV_DIR = '.env'
api.env.user = 'web'
api.env.hosts = []

# Activate the virtualenv
    activate_this = ENV_DIR + '/bin/'
    execfile(activate_this, dict(__file__=activate_this))
except IOError:

def _database_name():
    "Return name of default database"

    import settings

    return settings.DATABASES['default']['NAME']

def _database_engine():
    "Return engine of default database"

    import settings

    return settings.DATABASES['default']['ENGINE']

def reset():
    Drop databse, create new, then do syncdb and migrate.

    import settings

    if getattr(settings, 'DATABASE_RESET_SILENTLY', None):
        response = 'yes'
        response = raw_input('Are you sure you want to reset site\'s database? Enter yes to continue: ')

    if response == 'yes':
        dbname = _database_name()
        engine = _database_engine()
        with api.settings(warn_only=True):
            if 'psycopg' in engine:
                api.local('dropdb %s' % dbname)
            elif 'sqlite' in engine:
                api.local('rm %s' % dbname)
                raise Exception('Unknown engine: %s' % engine)
        if 'psycopg' in engine:
            api.local('createdb %s' % dbname)
        elif 'sqlite' in engine:
            if not os.path.exists(os.path.split(dbname)[0]):
        api.local('./ syncdb --noinput')
        if 'south' in settings.INSTALLED_APPS:
            api.local('./ migrate')
        print 'Cancelling'

def run():
    "Run debug server"

    api.local('./ runserver')

def run_plus():
    "Run debug server with werkzeug debugger"

    api.local('./ runserver_plus')

def buildenv():
    # Ignore "IOError: [Errno 26] Text file busy: 'var/.env/bin/python'"
    # when debug server is live
    with api.settings(warn_only=True):
        api.local('virtualenv --no-site-packages %s' % ENV_DIR, capture=False)
    api.local('%s/bin/easy_install pip' % ENV_DIR, capture=False)
    api.local('%s/bin/pip install --use-mirrors -r requirements.txt' % ENV_DIR, capture=False)

def dbdump():
    "Create dump of database"

    api.local('pg_dump -Fc -Z9 -x -f /tmp/dump.pack %s' % _database_name())

def dbsync():
    Download remote database dump and load it into local database.

    with'fab dbdump')
    api.get('/tmp/dump.pack', '/tmp/dump.pack')

def dbload(path='/tmp/dump.pack'):
    with api.settings(warn_only=True):
        api.local('dropdb %s' % _database_name())
        api.local('createdb %s' % _database_name())
    with api.settings(warn_only=True):
        api.local('pg_restore -v -c -x -d %s %s' % (_database_name(), path))

def shell():
    "Run shell_plus management command."

    api.local('./ shell_plus')

def deploy():
    import settings

    api.local('hg push')
    with'hg up')'./ syncdb --noinput')
        if 'south' in settings.INSTALLED_APPS:
  './ migrate')'touch')

def update_lib(name):
    Update dependency which has record in requirements.txt matched to given ``name``.
    for line in open('requirements.txt'):
        if name in line:
            line = line.strip()
            if not line.startswith('#'):
                api.local('%s/bin/pip install --use-mirrors -U %s' % (ENV_DIR, line.strip()))

def startapp(name):
    Create application files from template.

    api.local('cp -r .app_template %s' % name)