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nodeenv.py
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#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
nodeenv
~~~~~~~
Node.js virtual environment
:copyright: (c) 2014 by Eugene Kalinin
:license: BSD, see LICENSE for more details.
"""
import contextlib
import io
import json
import sys
import os
import re
import ssl
import stat
import logging
import operator
import optparse
import subprocess
import tarfile
import pipes
import platform
import zipfile
import shutil
import sysconfig
import glob
try: # pragma: no cover (py2 only)
from ConfigParser import SafeConfigParser as ConfigParser
# noinspection PyCompatibility
import urllib2
iteritems = operator.methodcaller('iteritems')
import httplib
IncompleteRead = httplib.IncompleteRead
except ImportError: # pragma: no cover (py3 only)
from configparser import ConfigParser
# noinspection PyUnresolvedReferences
import urllib.request as urllib2
iteritems = operator.methodcaller('items')
import http
IncompleteRead = http.client.IncompleteRead
from pkg_resources import parse_version
nodeenv_version = '1.6.0'
join = os.path.join
abspath = os.path.abspath
src_base_url = None
is_PY3 = sys.version_info[0] >= 3
is_WIN = platform.system() == 'Windows'
is_CYGWIN = platform.system().startswith(('CYGWIN', 'MSYS'))
ignore_ssl_certs = False
# ---------------------------------------------------------
# Utils
# https://github.com/jhermann/waif/blob/master/python/to_uft8.py
def to_utf8(text):
"""Convert given text to UTF-8 encoding (as far as possible)."""
if not text or is_PY3:
return text
try: # unicode or pure ascii
return text.encode("utf8")
except UnicodeDecodeError:
try: # successful UTF-8 decode means it's pretty sure UTF-8
text.decode("utf8")
return text
except UnicodeDecodeError:
try: # get desperate; and yes, this has a western hemisphere bias
return text.decode("cp1252").encode("utf8")
except UnicodeDecodeError:
pass
return text # return unchanged, hope for the best
class Config(object):
"""
Configuration namespace.
"""
# Defaults
node = 'latest'
npm = 'latest'
with_npm = False
jobs = '2'
without_ssl = False
debug = False
profile = False
make = 'make'
prebuilt = True
ignore_ssl_certs = False
@classmethod
def _load(cls, configfiles, verbose=False):
"""
Load configuration from the given files in reverse order,
if they exist and have a [nodeenv] section.
Additionally, load version from .node-version if file exists.
"""
for configfile in reversed(configfiles):
configfile = os.path.expanduser(configfile)
if not os.path.exists(configfile):
continue
ini_file = ConfigParser()
ini_file.read(configfile)
section = "nodeenv"
if not ini_file.has_section(section):
continue
for attr, val in iteritems(vars(cls)):
if attr.startswith('_') or not \
ini_file.has_option(section, attr):
continue
if isinstance(val, bool):
val = ini_file.getboolean(section, attr)
else:
val = ini_file.get(section, attr)
if verbose:
print('CONFIG {0}: {1} = {2}'.format(
os.path.basename(configfile), attr, val))
setattr(cls, attr, val)
if os.path.exists(".node-version"):
with open(".node-version", "r") as v_file:
setattr(cls, "node", v_file.readlines(1)[0].strip())
@classmethod
def _dump(cls):
"""
Print defaults for the README.
"""
print(" [nodeenv]")
print(" " + "\n ".join(
"%s = %s" % (k, v) for k, v in sorted(iteritems(vars(cls)))
if not k.startswith('_')))
Config._default = dict(
(attr, val) for attr, val in iteritems(vars(Config))
if not attr.startswith('_')
)
def clear_output(out):
"""
Remove new-lines and
"""
return out.decode('utf-8').replace('\n', '')
def remove_env_bin_from_path(env, env_bin_dir):
"""
Remove bin directory of the current environment from PATH
"""
return env.replace(env_bin_dir + ':', '')
def node_version_from_opt(opt):
"""
Parse the node version from the optparse options
"""
if opt.node == 'system':
out, err = subprocess.Popen(
["node", "--version"], stdout=subprocess.PIPE).communicate()
return parse_version(clear_output(out).replace('v', ''))
return parse_version(opt.node)
def create_logger():
"""
Create logger for diagnostic
"""
# create logger
loggr = logging.getLogger("nodeenv")
loggr.setLevel(logging.INFO)
# monkey patch
def emit(self, record):
msg = self.format(record)
fs = "%s" if getattr(record, "continued", False) else "%s\n"
self.stream.write(fs % to_utf8(msg))
self.flush()
logging.StreamHandler.emit = emit
# create console handler and set level to debug
ch = logging.StreamHandler()
ch.setLevel(logging.DEBUG)
# create formatter
formatter = logging.Formatter(fmt="%(message)s")
# add formatter to ch
ch.setFormatter(formatter)
# add ch to logger
loggr.addHandler(ch)
return loggr
logger = create_logger()
def parse_args(check=True):
"""
Parses command line arguments.
Set `check` to False to skip validation checks.
"""
parser = optparse.OptionParser(
version=nodeenv_version,
usage="%prog [OPTIONS] ENV_DIR")
parser.add_option(
'-n', '--node', dest='node', metavar='NODE_VER', default=Config.node,
help='The node.js version to use, e.g., '
'--node=0.4.3 will use the node-v0.4.3 '
'to create the new environment. '
'The default is last stable version (`latest`). '
'Use `lts` to use the latest LTS release. '
'Use `system` to use system-wide node.')
parser.add_option(
'--mirror',
action="store", dest='mirror',
help='Set mirror server of nodejs.org to download from.')
if not is_WIN:
parser.add_option(
'-j', '--jobs', dest='jobs', default=Config.jobs,
help='Sets number of parallel commands at node.js compilation. '
'The default is 2 jobs.')
parser.add_option(
'--load-average', dest='load_average',
help='Sets maximum load average for executing parallel commands '
'at node.js compilation.')
parser.add_option(
'--without-ssl', dest='without_ssl',
action='store_true', default=Config.without_ssl,
help='Build node.js without SSL support')
parser.add_option(
'--debug', dest='debug',
action='store_true', default=Config.debug,
help='Build debug variant of the node.js')
parser.add_option(
'--profile', dest='profile',
action='store_true', default=Config.profile,
help='Enable profiling for node.js')
parser.add_option(
'--make', '-m', dest='make_path',
metavar='MAKE_PATH',
help='Path to make command',
default=Config.make)
parser.add_option(
'--source', dest='prebuilt',
action='store_false', default=Config.prebuilt,
help='Install node.js from the source')
parser.add_option(
'-v', '--verbose',
action='store_true', dest='verbose', default=False,
help="Verbose mode")
parser.add_option(
'-q', '--quiet',
action='store_true', dest='quiet', default=False,
help="Quiet mode")
parser.add_option(
'-C', '--config-file', dest='config_file', default=None,
help="Load a different file than '~/.nodeenvrc'. "
"Pass an empty string for no config (use built-in defaults).")
parser.add_option(
'-r', '--requirements',
dest='requirements', default='', metavar='FILENAME',
help='Install all the packages listed in the given requirements file.')
parser.add_option(
'--prompt', dest='prompt',
help='Provides an alternative prompt prefix for this environment')
parser.add_option(
'-l', '--list', dest='list',
action='store_true', default=False,
help='Lists available node.js versions')
parser.add_option(
'--update', dest='update',
action='store_true', default=False,
help='Install npm packages from file without node')
parser.add_option(
'--with-npm', dest='with_npm',
action='store_true', default=Config.with_npm,
help='Build without installing npm into the new virtual environment. '
'Required for node.js < 0.6.3. By default, the npm included with '
'node.js is used. Under Windows, this defaults to true.')
parser.add_option(
'--npm', dest='npm',
metavar='NPM_VER', default=Config.npm,
help='The npm version to use, e.g., '
'--npm=0.3.18 will use the npm-0.3.18.tgz '
'tarball to install. '
'The default is last available version (`latest`).')
parser.add_option(
'--no-npm-clean', dest='no_npm_clean',
action='store_true', default=False,
help='Skip the npm 0.x cleanup. Cleanup is enabled by default.')
parser.add_option(
'--python-virtualenv', '-p', dest='python_virtualenv',
action='store_true', default=False,
help='Use current python virtualenv')
parser.add_option(
'--clean-src', '-c', dest='clean_src',
action='store_true', default=False,
help='Remove "src" directory after installation')
parser.add_option(
'--force', dest='force',
action='store_true', default=False,
help='Force installation in a pre-existing directory')
parser.add_option(
'--prebuilt', dest='prebuilt',
action='store_true', default=Config.prebuilt,
help='Install node.js from prebuilt package (default)')
parser.add_option(
'--ignore_ssl_certs', dest='ignore_ssl_certs',
action='store_true', default=Config.ignore_ssl_certs,
help='Ignore certificates for package downloads. - UNSAFE -')
options, args = parser.parse_args()
if options.config_file is None:
options.config_file = ["./tox.ini", "./setup.cfg", "~/.nodeenvrc"]
elif not options.config_file:
options.config_file = []
else:
# Make sure that explicitly provided files exist
if not os.path.exists(options.config_file):
parser.error("Config file '{0}' doesn't exist!".format(
options.config_file))
options.config_file = [options.config_file]
if not check:
return options, args
if not options.list and not options.python_virtualenv:
if not args:
parser.error('You must provide a DEST_DIR or '
'use current python virtualenv')
if len(args) > 1:
parser.error('There must be only one argument: DEST_DIR '
'(you gave: {0})'.format(' '.join(args)))
return options, args
def mkdir(path):
"""
Create directory
"""
if not os.path.exists(path):
logger.debug(' * Creating: %s ... ', path, extra=dict(continued=True))
os.makedirs(path)
logger.debug('done.')
else:
logger.debug(' * Directory %s already exists', path)
def make_executable(filename):
mode_0755 = (stat.S_IRWXU | stat.S_IXGRP |
stat.S_IRGRP | stat.S_IROTH | stat.S_IXOTH)
os.chmod(filename, mode_0755)
# noinspection PyArgumentList
def writefile(dest, content, overwrite=True, append=False):
"""
Create file and write content in it
"""
content = to_utf8(content)
if is_PY3 and type(content) != bytes:
content = bytes(content, 'utf-8')
if not os.path.exists(dest):
logger.debug(' * Writing %s ... ', dest, extra=dict(continued=True))
with open(dest, 'wb') as f:
f.write(content)
make_executable(dest)
logger.debug('done.')
return
else:
with open(dest, 'rb') as f:
c = f.read()
if content in c:
logger.debug(' * Content %s already in place', dest)
return
if not overwrite:
logger.info(' * File %s exists with different content; '
' not overwriting', dest)
return
if append:
logger.info(' * Appending data to %s', dest)
with open(dest, 'ab') as f:
f.write(content)
return
logger.info(' * Overwriting %s with new content', dest)
with open(dest, 'wb') as f:
f.write(content)
def callit(cmd, show_stdout=True, in_shell=False,
cwd=None, extra_env=None):
"""
Execute cmd line in sub-shell
"""
all_output = []
cmd_parts = []
for part in cmd:
if len(part) > 45:
part = part[:20] + "..." + part[-20:]
if ' ' in part or '\n' in part or '"' in part or "'" in part:
part = '"%s"' % part.replace('"', '\\"')
cmd_parts.append(part)
cmd_desc = ' '.join(cmd_parts)
logger.debug(" ** Running command %s" % cmd_desc)
if in_shell:
cmd = ' '.join(cmd)
# output
stdout = subprocess.PIPE
# env
if extra_env:
env = os.environ.copy()
if extra_env:
env.update(extra_env)
else:
env = None
# execute
try:
proc = subprocess.Popen(
cmd, stderr=subprocess.STDOUT, stdin=None, stdout=stdout,
cwd=cwd, env=env, shell=in_shell)
except Exception:
e = sys.exc_info()[1]
logger.error("Error %s while executing command %s" % (e, cmd_desc))
raise
stdout = proc.stdout
while stdout:
line = stdout.readline()
if not line:
break
try:
if is_WIN:
line = line.decode('mbcs').rstrip()
else:
line = line.decode('utf8').rstrip()
except UnicodeDecodeError:
line = line.decode('cp866').rstrip()
all_output.append(line)
if show_stdout:
logger.info(line)
proc.wait()
# error handler
if proc.returncode:
if show_stdout:
for s in all_output:
logger.critical(s)
raise OSError("Command %s failed with error code %s"
% (cmd_desc, proc.returncode))
return proc.returncode, all_output
def get_root_url(version):
if parse_version(version) > parse_version("0.5.0"):
return '%s/v%s/' % (src_base_url, version)
else:
return src_base_url
def is_x86_64_musl():
return sysconfig.get_config_var('HOST_GNU_TYPE') == 'x86_64-pc-linux-musl'
def get_node_bin_url(version):
archmap = {
'x86': 'x86', # Windows Vista 32
'i686': 'x86',
'x86_64': 'x64', # Linux Ubuntu 64
'amd64': 'x64', # FreeBSD 64bits
'AMD64': 'x64', # Windows Server 2012 R2 (x64)
'armv6l': 'armv6l', # arm
'armv7l': 'armv7l',
'armv8l': 'armv7l',
'aarch64': 'arm64',
'arm64': 'arm64',
'arm64/v8': 'arm64',
'armv8': 'arm64',
'armv8.4': 'arm64',
'ppc64le': 'ppc64le', # Power PC
's390x': 's390x', # IBM S390x
}
sysinfo = {
'system': platform.system().lower(),
'arch': archmap[platform.machine()],
}
if is_WIN or is_CYGWIN:
postfix = '-win-%(arch)s.zip' % sysinfo
elif is_x86_64_musl():
postfix = '-linux-x64-musl.tar.gz'
else:
postfix = '-%(system)s-%(arch)s.tar.gz' % sysinfo
filename = 'node-v%s%s' % (version, postfix)
return get_root_url(version) + filename
def get_node_src_url(version):
tar_name = 'node-v%s.tar.gz' % version
return get_root_url(version) + tar_name
@contextlib.contextmanager
def tarfile_open(*args, **kwargs):
"""Compatibility layer because py26."""
tf = tarfile.open(*args, **kwargs)
try:
yield tf
finally:
tf.close()
def download_node_src(node_url, src_dir, opt):
"""
Download source code
"""
logger.info('.', extra=dict(continued=True))
try:
dl_contents = io.BytesIO(urlopen(node_url).read())
except IncompleteRead as e:
logger.warning('Incomplete read while reading'
'from {}'.format(node_url))
dl_contents = e.partial
logger.info('.', extra=dict(continued=True))
if is_WIN or is_CYGWIN:
ctx = zipfile.ZipFile(dl_contents)
members = operator.methodcaller('namelist')
member_name = lambda s: s # noqa: E731
else:
ctx = tarfile_open(fileobj=dl_contents)
members = operator.methodcaller('getmembers')
member_name = operator.attrgetter('name')
with ctx as archive:
node_ver = re.escape(opt.node)
rexp_string = r"node-v%s[^/]*/(README\.md|CHANGELOG\.md|LICENSE)"\
% node_ver
extract_list = [
member
for member in members(archive)
if re.match(rexp_string, member_name(member)) is None
]
archive.extractall(src_dir, extract_list)
def urlopen(url):
home_url = "https://github.com/ekalinin/nodeenv/"
headers = {'User-Agent': 'nodeenv/%s (%s)' % (nodeenv_version, home_url)}
req = urllib2.Request(url, None, headers)
if ignore_ssl_certs:
context = ssl.SSLContext()
context.verify_mode = ssl.CERT_NONE
return urllib2.urlopen(req, context=context)
return urllib2.urlopen(req)
# ---------------------------------------------------------
# Virtual environment functions
def copytree(src, dst, symlinks=False, ignore=None):
for item in os.listdir(src):
s = os.path.join(src, item)
d = os.path.join(dst, item)
if os.path.isdir(s):
try:
shutil.copytree(s, d, symlinks, ignore)
except OSError:
copytree(s, d, symlinks, ignore)
else:
if os.path.islink(s):
# copy link only if it not exists. #189
if not os.path.islink(d):
os.symlink(os.readlink(s), d)
else:
shutil.copy2(s, d)
def copy_node_from_prebuilt(env_dir, src_dir, node_version):
"""
Copy prebuilt binaries into environment
"""
logger.info('.', extra=dict(continued=True))
if is_WIN:
dest = join(env_dir, 'Scripts')
mkdir(dest)
elif is_CYGWIN:
dest = join(env_dir, 'bin')
mkdir(dest)
# write here to avoid https://bugs.python.org/issue35650
writefile(join(env_dir, 'bin', 'node'), CYGWIN_NODE)
else:
dest = env_dir
src_folder_tpl = src_dir + to_utf8('/node-v%s*' % node_version)
src_folder, = glob.glob(src_folder_tpl)
copytree(src_folder, dest, True)
if is_CYGWIN:
for filename in ('npm', 'npx', 'node.exe'):
filename = join(env_dir, 'bin', filename)
if os.path.exists(filename):
make_executable(filename)
logger.info('.', extra=dict(continued=True))
def build_node_from_src(env_dir, src_dir, node_src_dir, opt):
env = {}
make_param_names = ['load-average', 'jobs']
make_param_values = map(
lambda x: getattr(opt, x.replace('-', '_')),
make_param_names)
make_opts = [
'--{0}={1}'.format(name, value)
if len(value) > 0 else '--{0}'.format(name)
for name, value in zip(make_param_names, make_param_values)
if value is not None
]
if getattr(sys.version_info, 'major', sys.version_info[0]) > 2:
# Currently, the node.js build scripts are using python2.*,
# therefore we need to temporarily point python exec to the
# python 2.* version in this case.
try:
_, which_python2_output = callit(
['which', 'python2'], opt.verbose, True, node_src_dir, env
)
python2_path = which_python2_output[0]
except (OSError, IndexError):
raise OSError(
'Python >=3.0 virtualenv detected, but no python2 '
'command (required for building node.js) was found'
)
logger.debug(' * Temporarily pointing python to %s', python2_path)
node_tmpbin_dir = join(src_dir, 'tmpbin')
node_tmpbin_link = join(node_tmpbin_dir, 'python')
mkdir(node_tmpbin_dir)
if not os.path.exists(node_tmpbin_link):
callit(['ln', '-s', python2_path, node_tmpbin_link])
env['PATH'] = '{}:{}'.format(node_tmpbin_dir,
os.environ.get('PATH', ''))
conf_cmd = [
'./configure',
'--prefix=%s' % pipes.quote(env_dir)
]
if opt.without_ssl:
conf_cmd.append('--without-ssl')
if opt.debug:
conf_cmd.append('--debug')
if opt.profile:
conf_cmd.append('--profile')
make_cmd = opt.make_path
callit(conf_cmd, opt.verbose, True, node_src_dir, env)
logger.info('.', extra=dict(continued=True))
callit([make_cmd] + make_opts, opt.verbose, True, node_src_dir, env)
logger.info('.', extra=dict(continued=True))
callit([make_cmd + ' install'], opt.verbose, True, node_src_dir, env)
def install_node(env_dir, src_dir, opt):
"""
Download source code for node.js, unpack it
and install it in virtual environment.
"""
try:
install_node_wrapped(env_dir, src_dir, opt)
except BaseException:
# this restores the newline suppressed by continued=True
logger.info('')
raise
def install_node_wrapped(env_dir, src_dir, opt):
env_dir = abspath(env_dir)
node_src_dir = join(src_dir, to_utf8('node-v%s' % opt.node))
src_type = "prebuilt" if opt.prebuilt else "source"
logger.info(' * Install %s node (%s) ' % (src_type, opt.node),
extra=dict(continued=True))
if opt.prebuilt:
node_url = get_node_bin_url(opt.node)
else:
node_url = get_node_src_url(opt.node)
# get src if not downloaded yet
if not os.path.exists(node_src_dir):
download_node_src(node_url, src_dir, opt)
logger.info('.', extra=dict(continued=True))
if opt.prebuilt:
copy_node_from_prebuilt(env_dir, src_dir, opt.node)
else:
build_node_from_src(env_dir, src_dir, node_src_dir, opt)
logger.info(' done.')
def install_npm(env_dir, _src_dir, opt):
"""
Download source code for npm, unpack it
and install it in virtual environment.
"""
logger.info(' * Install npm.js (%s) ... ' % opt.npm,
extra=dict(continued=True))
env = dict(
os.environ,
clean='no' if opt.no_npm_clean else 'yes',
npm_install=opt.npm,
)
proc = subprocess.Popen(
(
'bash', '-c',
'. {0} && npm install -g npm@{1}'.format(
pipes.quote(join(env_dir, 'bin', 'activate')),
opt.npm,
)
),
env=env,
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT,
)
out, _ = proc.communicate()
if opt.verbose:
logger.info(out)
logger.info('done.')
def install_npm_win(env_dir, src_dir, opt):
"""
Download source code for npm, unpack it
and install it in virtual environment.
"""
logger.info(' * Install npm.js (%s) ... ' % opt.npm,
extra=dict(continued=True))
npm_url = 'https://github.com/npm/cli/archive/v%s.zip' % opt.npm
npm_contents = io.BytesIO(urlopen(npm_url).read())
bin_path = join(env_dir, 'Scripts')
node_modules_path = join(bin_path, 'node_modules', 'npm')
if os.path.exists(node_modules_path):
shutil.rmtree(node_modules_path)
if os.path.exists(join(bin_path, 'npm.cmd')):
os.remove(join(bin_path, 'npm.cmd'))
if os.path.exists(join(bin_path, 'npm-cli.js')):
os.remove(join(bin_path, 'npm-cli.js'))
with zipfile.ZipFile(npm_contents, 'r') as zipf:
zipf.extractall(src_dir)
npm_ver = 'cli-%s' % opt.npm
shutil.copytree(join(src_dir, npm_ver), node_modules_path)
shutil.copy(join(src_dir, npm_ver, 'bin', 'npm.cmd'),
join(bin_path, 'npm.cmd'))
shutil.copy(join(src_dir, npm_ver, 'bin', 'npm-cli.js'),
join(bin_path, 'npm-cli.js'))
if is_CYGWIN:
shutil.copy(join(bin_path, 'npm-cli.js'),
join(env_dir, 'bin', 'npm-cli.js'))
shutil.copytree(join(bin_path, 'node_modules'),
join(env_dir, 'bin', 'node_modules'))
npm_gh_url = 'https://raw.githubusercontent.com/npm/cli'
npm_bin_url = '{}/{}/bin/npm'.format(npm_gh_url, opt.npm)
writefile(join(env_dir, 'bin', 'npm'), urlopen(npm_bin_url).read())
def install_packages(env_dir, opt):
"""
Install node.js packages via npm
"""
logger.info(' * Install node.js packages ... ',
extra=dict(continued=True))
packages = [package.strip() for package in
open(opt.requirements).readlines()]
activate_path = join(env_dir, 'bin', 'activate')
real_npm_ver = opt.npm if opt.npm.count(".") == 2 else opt.npm + ".0"
if opt.npm == "latest" or real_npm_ver >= "1.0.0":
cmd = '. ' + pipes.quote(activate_path) + \
' && npm install -g %(pack)s'
else:
cmd = '. ' + pipes.quote(activate_path) + \
' && npm install %(pack)s' + \
' && npm activate %(pack)s'
for package in packages:
if not package:
continue
callit(cmd=[
cmd % {"pack": package}], show_stdout=opt.verbose, in_shell=True)
logger.info('done.')
def install_activate(env_dir, opt):
"""
Install virtual environment activation script
"""
if is_WIN:
files = {
'activate.bat': ACTIVATE_BAT,
"deactivate.bat": DEACTIVATE_BAT,
"Activate.ps1": ACTIVATE_PS1
}
bin_dir = join(env_dir, 'Scripts')
shim_node = join(bin_dir, "node.exe")
shim_nodejs = join(bin_dir, "nodejs.exe")
else:
files = {
'activate': ACTIVATE_SH,
'activate.fish': ACTIVATE_FISH,
'shim': SHIM
}
bin_dir = join(env_dir, 'bin')
shim_node = join(bin_dir, "node")
shim_nodejs = join(bin_dir, "nodejs")
if is_CYGWIN:
mkdir(bin_dir)
if opt.node == "system":
files["node"] = SHIM
mod_dir = join('lib', 'node_modules')
prompt = opt.prompt or '(%s)' % os.path.basename(os.path.abspath(env_dir))
if opt.node == "system":
env = os.environ.copy()
env.update({'PATH': remove_env_bin_from_path(env['PATH'], bin_dir)})
for candidate in ("nodejs", "node"):
which_node_output, _ = subprocess.Popen(
["which", candidate],
stdout=subprocess.PIPE, env=env).communicate()
shim_node = clear_output(which_node_output)
if shim_node:
break
assert shim_node, "Did not find nodejs or node system executable"
for name, content in files.items():
file_path = join(bin_dir, name)
content = content.replace('__NODE_VIRTUAL_PROMPT__', prompt)
content = content.replace('__NODE_VIRTUAL_ENV__',
os.path.abspath(env_dir))
content = content.replace('__SHIM_NODE__', shim_node)
content = content.replace('__BIN_NAME__', os.path.basename(bin_dir))
content = content.replace('__MOD_NAME__', mod_dir)
if is_CYGWIN:
_, cyg_bin_dir = callit(
['cygpath', '-w', os.path.abspath(bin_dir)],
show_stdout=False, in_shell=False)
content = content.replace('__NPM_CONFIG_PREFIX__', cyg_bin_dir[0])
else:
content = content.replace('__NPM_CONFIG_PREFIX__',
'$NODE_VIRTUAL_ENV')
# if we call in the same environment:
# $ nodeenv -p --prebuilt
# $ nodeenv -p --node=system
# we should get `bin/node` not as binary+string.
# `bin/activate` should be appended if we inside
# existing python's virtual environment
need_append = False
if opt.python_virtualenv:
disable_prompt = DISABLE_PROMPT.get(name, '')
enable_prompt = ENABLE_PROMPT.get(name, '')
content = disable_prompt + content + enable_prompt
need_append = bool(disable_prompt)
writefile(file_path, content, append=need_append)
if not os.path.exists(shim_nodejs):
if is_WIN:
try:
callit(['mklink', shim_nodejs, 'node.exe'], True, True)
except OSError:
logger.error('Error: Failed to create nodejs.exe link')
else:
os.symlink("node", shim_nodejs)
def set_predeactivate_hook(env_dir):
if not is_WIN:
with open(join(env_dir, 'bin', 'predeactivate'), 'a') as hook:
hook.write(PREDEACTIVATE_SH)
def create_environment(env_dir, opt):
"""
Creates a new environment in ``env_dir``.
"""
if os.path.exists(env_dir) and not opt.python_virtualenv:
logger.info(' * Environment already exists: %s', env_dir)
if not opt.force:
sys.exit(2)
src_dir = to_utf8(abspath(join(env_dir, 'src')))
mkdir(src_dir)
if opt.node != "system":
install_node(env_dir, src_dir, opt)
else:
mkdir(join(env_dir, 'bin'))
mkdir(join(env_dir, 'lib'))
mkdir(join(env_dir, 'lib', 'node_modules'))
# activate script install must be
# before npm install, npm use activate
# for install
install_activate(env_dir, opt)
if node_version_from_opt(opt) < parse_version("0.6.3") or opt.with_npm:
instfunc = install_npm_win if is_WIN or is_CYGWIN else install_npm
instfunc(env_dir, src_dir, opt)
if opt.requirements:
install_packages(env_dir, opt)
if opt.python_virtualenv:
set_predeactivate_hook(env_dir)
# Cleanup
if opt.clean_src:
shutil.rmtree(src_dir)
def _get_versions_json():
response = urlopen('%s/index.json' % src_base_url)
return json.loads(response.read().decode('UTF-8'))
def get_node_versions():
return [dct['version'].lstrip('v') for dct in _get_versions_json()][::-1]
def print_node_versions():
"""
Prints into stdout all available node.js versions
"""
versions = get_node_versions()
chunks_of_8 = [
versions[pos:pos + 8] for pos in range(0, len(versions), 8)
]
for chunk in chunks_of_8:
logger.info('\t'.join(chunk))