Quelle create_venv.py Sprache: Python

#!/usr/bin/env python3
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.

"""
This scripts sets up a virtualenv and installs TPS into it.
It's probably best to specify a path NOT inside the repo, otherwise
all the virtualenv files will show up in e.g. hg status.
"""

import optparse
import os
import subprocess
import sys
import venv

here = os.path.dirname(os.path.abspath(__file__))
usage_message = """
***********************************************************************

To run TPS, activate the virtualenv using:
    source {TARGET}/{BIN_NAME}

To change your TPS config, please edit the file:
    {TARGET}/config.json

To execute tps use:
    runtps --binary=/path/to/firefox

See runtps --help for all options

***********************************************************************
"""

if sys.platform == "win32":
    bin_name = os.path.join("Scripts", "activate.bat")
    python_env = os.path.join("Scripts", "python.exe")
else:
    bin_name = os.path.join("bin", "activate")
    python_env = os.path.join("bin", "python")

def setup_virtualenv(target):
    print("Creating new virtual environment:", os.path.abspath(target))
    # system_site_packages=True so we have access to setuptools.
    venv.create(target, system_site_packages=True)

def update_configfile(source, target, replacements):
    lines = []

    with open(source) as config:
        for line in config:
            for source_string, target_string in replacements.items():
                if target_string:
                    line = line.replace(source_string, target_string)
            lines.append(line)

    with open(target, "w") as config:
        for line in lines:
            config.write(line)

def main():
    parser = optparse.OptionParser("Usage: %prog [options] path_to_venv")
    parser.add_option(
        "--keep-config",
        dest="keep_config",
        action="store_true",
        help="Keep the existing config file.",
    )
    parser.add_option(
        "--password",
        type="string",
        dest="password",
        metavar="FX_ACCOUNT_PASSWORD",
        default=None,
        help="The Firefox Account password.",
    )
    parser.add_option(
        "-p",
        "--python",
        type="string",
        dest="python",
        metavar="PYTHON_BIN",
        default=None,
        help="The Python interpreter to use.",
    )
    parser.add_option(
        "--sync-passphrase",
        type="string",
        dest="sync_passphrase",
        metavar="SYNC_ACCOUNT_PASSPHRASE",
        default=None,
        help="The old Firefox Sync account passphrase.",
    )
    parser.add_option(
        "--sync-password",
        type="string",
        dest="sync_password",
        metavar="SYNC_ACCOUNT_PASSWORD",
        default=None,
        help="The old Firefox Sync account password.",
    )
    parser.add_option(
        "--sync-username",
        type="string",
        dest="sync_username",
        metavar="SYNC_ACCOUNT_USERNAME",
        default=None,
        help="The old Firefox Sync account username.",
    )
    parser.add_option(
        "--username",
        type="string",
        dest="username",
        metavar="FX_ACCOUNT_USERNAME",
        default=None,
        help="The Firefox Account username.",
    )

    (options, args) = parser.parse_args(args=None, values=None)

    if len(args) != 1:
        parser.error("Path to the environment has to be specified")
    target = args[0]
    assert target

    setup_virtualenv(target)

    # Activate tps environment
    activate(target)

    # Install TPS in environment
    subprocess.check_call(
        [os.path.join(target, python_env), os.path.join(here, "setup.py"), "install"]
    )

    # Get the path to tests and extensions directory by checking check where
    # the tests and extensions directories are located
    sync_dir = os.path.abspath(os.path.join(here, "..", "..", "services", "sync"))
    if os.path.exists(sync_dir):
        testdir = os.path.join(sync_dir, "tests", "tps")
        extdir = os.path.join(sync_dir, "tps", "extensions")
    else:
        testdir = os.path.join(here, "tests")
        extdir = os.path.join(here, "extensions")

    if not options.keep_config:
        update_configfile(
            os.path.join(here, "config", "config.json.in"),
            os.path.join(target, "config.json"),
            replacements={
                "__TESTDIR__": testdir.replace("\\", "/"),
                "__EXTENSIONDIR__": extdir.replace("\\", "/"),
                "__FX_ACCOUNT_USERNAME__": options.username,
                "__FX_ACCOUNT_PASSWORD__": options.password,
                "__SYNC_ACCOUNT_USERNAME__": options.sync_username,
                "__SYNC_ACCOUNT_PASSWORD__": options.sync_password,
                "__SYNC_ACCOUNT_PASSPHRASE__": options.sync_passphrase,
            },
        )

        if not (options.username and options.password):
            print("\nFirefox Account credentials not specified.")
        if not (options.sync_username and options.sync_password and options.passphrase):
            print("\nFirefox Sync account credentials not specified.")

    # Print the user instructions
    print(usage_message.format(TARGET=target, BIN_NAME=bin_name))

def activate(target):
    # This is a lightly modified copy of `activate_this.py`, which existed when
    # venv was an external package, but doesn't come with the builtin venv support.
    old_os_path = os.environ.get("PATH", "")
    os.environ["PATH"] = (
        os.path.dirname(os.path.abspath(__file__)) + os.pathsep + old_os_path
    )
    base = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
    if sys.platform == "win32":
        site_packages = os.path.join(base, "Lib", "site-packages")
    else:
        site_packages = os.path.join(
            base, "lib", "python%s" % sys.version[:3], "site-packages"
        )
    prev_sys_path = list(sys.path)
    import site

    site.addsitedir(site_packages)
    sys.real_prefix = sys.prefix
    sys.prefix = base
    # Move the added items to the front of the path:
    new_sys_path = []
    for item in list(sys.path):
        if item not in prev_sys_path:
            new_sys_path.append(item)
            sys.path.remove(item)
    sys.path[:0] = new_sys_path

if __name__ == "__main__":
    main()

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