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install.py
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install.py
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"""
NB! The script should be runnable both with Python 2.7 and Python 3.*
Because some distros have only Python 2 installed (eg CentOS 7)
and some only Python 3 (eg latest Fedoras)
"""
from __future__ import print_function
import os.path
import shutil
import subprocess
import sys
if sys.version_info[0] == 2:
input = raw_input # @UndefinedVariable @ReservedAssignment
def which(cmd, mode=os.F_OK | os.X_OK, path=None):
"""Given a command, mode, and a PATH string, return the path which
conforms to the given mode on the PATH, or None if there is no such
file.
`mode` defaults to os.F_OK | os.X_OK. `path` defaults to the result
of os.environ.get("PATH"), or can be overridden with a custom search
path.
(Copied from Python 3.5 shutil)
"""
# Check that a given file can be accessed with the correct mode.
# Additionally check that `file` is not a directory, as on Windows
# directories pass the os.access check.
def _access_check(fn, mode):
return os.path.exists(fn) and os.access(fn, mode) and not os.path.isdir(fn)
# If we're given a path with a directory part, look it up directly rather
# than referring to PATH directories. This includes checking relative to the
# current directory, e.g. ./script
if os.path.dirname(cmd):
if _access_check(cmd, mode):
return cmd
return None
if path is None:
path = os.environ.get("PATH", os.defpath)
if not path:
return None
path = path.split(os.pathsep)
files = [cmd]
seen = set()
for dir_ in path:
normdir = os.path.normcase(dir_)
if not normdir in seen:
seen.add(normdir)
for thefile in files:
name = os.path.join(dir_, thefile)
if _access_check(name, mode):
return name
return None
def create_launcher(source_filename, target_filename, replacements={}):
target_dir = os.path.dirname(target_filename)
if not os.path.exists(target_dir):
os.makedirs(target_dir)
with open(source_filename) as f:
content = f.read()
with open(target_filename, mode="w") as f:
for from_str in replacements:
to_str = replacements[from_str]
content = content.replace(from_str, to_str)
f.write(content)
# Seems that even desktop files have to be executable
# https://help.ubuntu.com/community/UnityLaunchersAndDesktopFiles
os.chmod(target_filename, 0o755)
def try_to_refresh_desktop_and_menus(menu_dir):
"""In KDE, the .destop files are not taken into account immediately"""
for cmd in ["kbuildsycoca5", "kbuildsycoca4", "kbuildsycoca"]:
if which(cmd):
subprocess.call([cmd])
break
udd = "update-desktop-database"
if which(udd):
subprocess.call([udd, menu_dir])
if len(sys.argv) == 1:
parent_dir = os.path.expanduser("~/apps")
elif len(sys.argv) == 2:
parent_dir = os.path.abspath(os.path.expanduser(sys.argv[1].strip().rstrip("/")))
else:
print("Installer should be run with 0 or 1 arguments", file=sys.stderr)
exit(1)
if parent_dir.startswith(os.path.dirname(__file__)):
print("Can't install into installer directory", file=sys.stderr)
exit(1)
def print_task(desc):
print((desc + " ").ljust(70, ".") + " ", end="")
def get_desktop_path():
try:
return subprocess.check_output(["xdg-user-dir", "DESKTOP"]).strip().decode()
except:
return os.path.expanduser("~/Desktop")
# define directories
source_dir = os.path.dirname(os.path.realpath(__file__))
target_dir = parent_dir + "/thonny"
if target_dir.startswith("/home"):
menu_dir = os.path.expanduser("~/.local/share/applications")
else:
menu_dir = "/usr/share/applications"
try:
# handle reinstalling newer version
print_task("Copying files to " + target_dir)
if os.path.exists(target_dir):
print()
answer = input(
target_dir + " already exists. I need to clear it. Is it OK? [Y/n]: "
).strip()
if not answer or answer.lower() in ["y", "yes"]:
shutil.rmtree(target_dir)
else:
print("Installation is cancelled", file=sys.stderr)
exit(1)
shutil.copytree(source_dir, target_dir) # Copy everything
shutil.rmtree(target_dir + "/templates") # ... except templates
os.remove(target_dir + "/install") # ... and installer
print("Done!")
menu_item_path = menu_dir + "/Thonny.desktop"
print_task("Creating start menu item (%s)" % menu_item_path)
create_launcher(
source_dir + "/templates/Thonny.desktop",
menu_item_path,
{"$target_dir": target_dir},
)
print("Done!")
print_task("Creating Desktop shortcut")
desktop_path = get_desktop_path()
create_launcher(
source_dir + "/templates/Thonny.desktop",
desktop_path + "/Thonny.desktop",
{"$target_dir": target_dir},
)
print("Done!")
uninstaller_path = target_dir + "/bin/uninstall"
print_task("Creating uninstaller (%s)" % uninstaller_path)
create_launcher(
source_dir + "/templates/uninstall.sh",
uninstaller_path,
{"$target_dir": target_dir, "$menu_dir": menu_dir},
)
print("Done!")
print_task("Compiling Python files")
return_code = subprocess.call(
[target_dir + "/bin/python3.7", "-m", "compileall", target_dir + "/lib"]
)
# TODO: why is return code 1 (eg. in 64-bit Fedora 22) even when everything seemed to succeed?
print("Done!")
print_task("Refreshing system menu")
try_to_refresh_desktop_and_menus(menu_dir)
print("Done!")
print()
print("Installation was successful, you can start Thonny from start menu under")
print("Education or Programming, or by calling " + target_dir + "/bin/thonny")
print("For uninstalling Thonny call " + target_dir + "/bin/uninstall")
except OSError as e:
print()
print(e, file=sys.stderr)
exit(1)