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"""
Call this like ``python fassembler/create-venv-script.py``; it will
refresh the fassembler-boot.py script
"""
import os
import subprocess
import re

here = os.path.dirname(os.path.abspath(__file__))
base_dir = os.path.dirname(here)
script_name = os.path.join(base_dir, 'fassembler-boot.py')

import virtualenv

EXTRA_TEXT = """
FASS_GIT_LOCATION = "git://github.com/socialplanning/fassembler.git"

import shutil

def extend_parser(parser):
parser.add_option(
'--git',
dest='fassembler_git',
default=FASS_GIT_LOCATION,
help='Location of a git repository to use for the installation of fassembler')

def adjust_options(options, args):
if not args:
return # caller will raise error
# We're actually going to build the venv in a subdirectory
base_dir = args[0]
args[0] = join(base_dir, 'fassembler')

def after_install(options, home_dir):
base_dir = os.path.dirname(home_dir)
src_dir = join(home_dir, 'src')
fassembler_git = options.fassembler_git

fassembler_dir = join(src_dir, 'fassembler')
call_subprocess(['rm', '-rf', fassembler_dir])

logger.notify('Installing fassembler from %s to %s' % (fassembler_git, fassembler_dir))
fs_ensure_dir(src_dir)
call_subprocess(['git', 'clone', fassembler_git, fassembler_dir],
show_stdout=True)
logger.indent += 2
try:
call_subprocess([os.path.abspath(join(home_dir, 'bin', 'easy_install')), 'mysql-python'],
cwd=os.path.abspath(fassembler_dir),
filter_stdout=filter_python_develop,
show_stdout=False)
call_subprocess([os.path.abspath(join(home_dir, 'bin', 'python')), 'setup.py', 'develop'],
cwd=os.path.abspath(fassembler_dir),
filter_stdout=filter_python_develop,
show_stdout=False)
finally:
logger.indent -= 2
script_dir = join(base_dir, 'bin')
script_dest = join(script_dir, 'fassembler')
logger.notify('Copying fassembler to %s' % script_dest)
fs_ensure_dir(script_dir)
if os.path.exists(script_dest):
os.unlink(script_dest)
os.symlink('../fassembler/bin/fassembler', script_dest)
etc_dir = join(base_dir, 'etc')
build_ini = join(etc_dir, 'build.ini')
if not os.path.exists(build_ini):
fs_ensure_dir(etc_dir)
logger.notify('Touching %s' % build_ini)
f = open(build_ini, 'w')
f.close()
logger.notify('Run "%s fassembler:topp" (etc) to build out the environment'
% script_dest)
logger.notify('Run "%s Package" to install new packages that provide builds'
% join(home_dir, 'bin', 'easy_install'))

def fs_ensure_dir(dir):
if not os.path.exists(dir):
logger.info('Creating directory %s' % dir)
os.makedirs(dir)

def filter_python_develop(line):
if not line.strip():
return Logger.DEBUG
for prefix in ['Searching for', 'Reading ', 'Best match: ', 'Processing ',
'Moving ', 'Adding ', 'running ', 'writing ', 'Creating ',
'creating ', 'Copying ']:
if line.startswith(prefix):
return Logger.DEBUG
return Logger.NOTIFY
"""

def main():
    text = virtualenv.create_bootstrap_script(EXTRA_TEXT, python_version='2.4')
    if os.path.exists(script_name):
        f = open(script_name)
        cur_text = f.read()
        f.close()
    else:
        cur_text = ''
    print 'Updating %s' % script_name
    if cur_text == 'text':
        print 'No update'
    else:
        print 'Script changed; updating...'
        f = open(script_name, 'w')
        f.write(text)
        f.close()

if __name__ == '__main__':
    main()

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