create new uninstall script

scripts/uninstall-mmgen.py

@@ -0,0 +1,88 @@
+#!/usr/bin/env python3
+#
+# mmgen = Multi-Mode GENerator, command-line Bitcoin cold storage solution
+# Copyright (C)2013-2019 The MMGen Project <mmgen@tuta.io>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+"""
+uninstall-mmgen.py - Uninstall MMGen from a system
+"""
+
+import sys,os
+
+def normalize_path(p):
+	return os.path.normpath(os.path.realpath(os.path.abspath(p)))
+
+curdir = normalize_path(os.curdir)
+
+for n in reversed(range(len(sys.path))):
+	if normalize_path(sys.path[n]) == curdir:
+		del(sys.path[n])
+
+try: import mmgen.main
+except:
+	sys.stderr.write('Failed to import mmgen.main module.  Is MMGen installed?\n')
+	sys.exit(1)
+
+modpath_save = sys.modules['mmgen.main'].__spec__.origin
+
+from mmgen.common import *
+
+opts_data = lambda: {
+	'prog_name': sys.argv[0].split('/')[-1],
+	'desc': 'Remove MMGen from your system',
+	'usage': '[opts]',
+	'options': """
+-h, --help        Print this help message
+-l, --list-paths  List the directories and files that would be deleted
+-n, --no-prompt   Don't prompt before deleting
+"""
+}
+
+cmd_args = opts.init(opts_data)
+
+if len(cmd_args): opts.usage()
+
+mod_dir = os.path.split(normalize_path(modpath_save))[0]
+mod_pardir = os.path.split(mod_dir)[0]
+ull = '/usr/local/lib/'
+ulb = '/usr/local/bin/'
+
+if curdir == mod_dir[:len(curdir)] or mod_dir[:len(ull)] != ull:
+	die(1,"Can't find system install directory! Aborting")
+
+del_list = ['/usr/local/share/mmgen',mod_dir]
+
+import stat
+def is_reg(pn): return stat.S_ISREG(os.stat(pn).st_mode)
+def is_dir(pn): return stat.S_ISDIR(os.stat(pn).st_mode)
+
+for d in (ulb,mod_pardir):
+	# add files only, not directories
+	del_list += [os.path.join(d,e) for e in os.listdir(d) if is_reg(os.path.join(d,e)) and e[:6] == 'mmgen-']
+
+if opt.list_paths:
+	die(1,'\n'.join(del_list))
+
+if not opt.no_prompt:
+	m = 'Deleting the following paths and files:\n  {}\nProceed?'
+	if not keypress_confirm(m.format('\n  '.join(del_list))):
+		die(1,'Exiting at user request')
+
+import shutil
+for pn in del_list:
+	if is_dir(pn): shutil.rmtree(pn)
+	else:          os.unlink(pn)
+	msg('Deleted: ' + pn)