lektor-website/assets/install.sh

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#!/bin/sh
# This script helps you install Lektor on your computer. Right now it
# only supports Linux and OS X and only on OS X will it install the
# desktop version.
#
# For more information see https://www.getlektor.com/
# Wrap everything in a function so that we do not accidentally execute
# something we should not in case a truncated version of the script
# is executed.
I() {
set -u
if ! hash python 2> /dev/null; then
echo "Error: To use this script you need to have Python installed"
exit 1
fi
python - <<'EOF'
if 1:
import os
import sys
import json
import urllib
import tempfile
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import shutil
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from subprocess import Popen
sys.stdin = open('/dev/tty', 'r')
VENV_URL = "https://pypi.python.org/pypi/virtualenv/json"
KNOWN_BINS = ['/usr/local/bin', '/opt/local/bin',
os.path.join(os.environ['HOME'], '.bin'),
os.path.join(os.environ['HOME'], '.local', 'bin')]
def find_user_paths():
rv = []
for item in os.environ['PATH'].split(':'):
if os.access(item, os.W_OK) \
and item not in rv \
and '/sbin' not in item:
rv.append(item)
return rv
def bin_sort_key(path):
try:
return KNOWN_BINS.index(path)
except ValueError:
return float('inf')
def find_locations(paths):
paths.sort(key=bin_sort_key)
for path in paths:
if path.startswith(os.environ['HOME']):
return path, os.path.join(os.environ['HOME'],
'.local', 'lib', 'lektor')
elif path.endswith('/bin'):
return path, os.path.join(
os.path.dirname(path), 'lib', 'lektor')
None, None
def get_confirmation():
while 1:
input = raw_input('Continue? [Yn] ').lower().strip()
if input in ('', 'y'):
break
elif input == 'n':
print
print 'Aborted!'
sys.exit()
def wipe_installation(lib_dir, symlink_path):
if os.path.lexists(symlink_path):
os.remove(symlink_path)
if os.path.exists(lib_dir):
shutil.rmtree(lib_dir, ignore_errors=True)
def check_installation(lib_dir, bin_dir):
symlink_path = os.path.join(bin_dir, 'lektor')
if os.path.exists(lib_dir) or os.path.lexists(symlink_path):
print ' Lektor seems to be installed already.'
print ' Continuing will wipe %s and remove %s' % (lib_dir, symlink_path)
print
get_confirmation()
print
wipe_installation(lib_dir, symlink_path)
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def fail(message):
print 'Error: %s' % message
sys.exit(1)
def install(virtualenv_url, lib_dir, bin_dir):
t = tempfile.mkdtemp()
Popen('curl -sf "%s" | tar -xzf - --strip-components=1' %
virtualenv_url, shell=True, cwd=t).wait()
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try:
os.makedirs(lib_dir)
except OSError:
pass
Popen(['./virtualenv.py', lib_dir], cwd=t).wait()
Popen([os.path.join(lib_dir, 'bin', 'pip'),
'install', '--upgrade', 'Lektor']).wait()
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os.symlink(os.path.join(lib_dir, 'bin', 'lektor'),
os.path.join(bin_dir, 'lektor'))
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def main():
print
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print 'Welcome to Lektor'
print
print 'This script will install Lektor on your computer.'
print
paths = find_user_paths()
if not paths:
fail('None of the items in $PATH are writable. Run with '
'sudo or add a $PATH item that you have access to.')
bin_dir, lib_dir = find_locations(paths)
if bin_dir is None or lib_dir is None:
fail('Could not determine installation location for Lektor.')
check_installation(lib_dir, bin_dir)
print 'Installing at:'
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print ' bin: %s' % bin_dir
print ' app: %s' % lib_dir
print
get_confirmation()
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for url in json.load(urllib.urlopen(VENV_URL))['urls']:
if url['python_version'] == 'source':
virtualenv = url['url']
break
else:
fail('Could not find virtualenv')
install(virtualenv, lib_dir, bin_dir)
print
print 'All done!'
main()
EOF
}
I