add script to check openlp dependencies

scripts/check_dependencies.py

@@ -0,0 +1,148 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+# vim: autoindent shiftwidth=4 expandtab textwidth=80 tabstop=4 softtabstop=4
+
+###############################################################################
+# OpenLP - Open Source Lyrics Projection                                      #
+# --------------------------------------------------------------------------- #
+# Copyright (c) 2011 Raoul Snyman                                             #
+# --------------------------------------------------------------------------- #
+# 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; version 2 of the License.                              #
+#                                                                             #
+# 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, write to the Free Software Foundation, Inc., 59  #
+# Temple Place, Suite 330, Boston, MA 02111-1307 USA                          #
+###############################################################################
+
+"""
+This script is used to check dependencies of OpenLP. It checks availability
+of required python modules and their version. To verify availability of Python
+modules, simply run this script::
+
+    @:~$ ./check_dependencies.py
+
+"""
+import os
+import sys
+
+is_win = sys.platform.startswith('win')
+
+VERS = {
+    'Python': '2.6',
+    'PyQt4': '4.6',
+    'Qt4': '4.6',
+    'sqlalchemy': '0.5',
+    # pyenchant 1.6 required on Windows
+    'enchant': '1.6' if is_win else '1.3'
+    }
+
+# pywin32
+WIN32_MODULES = [
+    'win32com',
+    'win32ui',
+    'pywintypes',
+    ]
+
+MODULES = [
+    'PyQt4',
+    'PyQt4.QtCore',
+    'PyQt4.QtGui',
+    'PyQt4.QtNetwork',
+    'PyQt4.QtOpenGL',
+    'PyQt4.QtSvg',
+    'PyQt4.QtTest',
+    'PyQt4.QtWebKit',
+    'PyQt4.phonon',
+    'sqlalchemy',
+    'sqlite3',
+    'lxml',
+    'chardet',
+    'enchant',
+    'BeautifulSoup',
+    'mako',
+    ]
+
+
+OPTIONAL_MODULES = [
+    ('sqlite', ' (SQLite 2 support)'),
+    ('MySQLdb', ' (MySQL support)'),
+    ('psycopg2', ' (PostgreSQL support)'),
+    ]
+
+w = sys.stdout.write
+
+
+def check_vers(version, required, text):
+    if type(version) is str:
+        version = version.split('.')
+        version = [int(x) for x in version]
+    if type(required) is str:
+        required = required.split('.')
+        required = [int(x) for x in required]
+    w('  %s >= %s ...    ' % (text, '.'.join([str(x) for x in required])))
+    if version >= required:
+        w('.'.join([str(x) for x in version]) + os.linesep)
+        return True
+    else:
+        w('FAIL' + os.linesep)
+        return False
+
+
+def verify_python():
+    if not check_vers(list(sys.version_info), VERS['Python'], text='Python'):
+        exit(1)
+
+
+def verify_versions():
+    print('Verifying version of modules...')
+    from PyQt4 import QtCore
+    check_vers(QtCore.PYQT_VERSION_STR, VERS['PyQt4'],
+        'PyQt4')
+    check_vers(QtCore.qVersion(), VERS['Qt4'],
+        'Qt4')
+    check_vers(__import__('sqlalchemy').__version__, VERS['sqlalchemy'],
+        'sqlalchemy')
+    check_vers(__import__('enchant').__version__, VERS['enchant'],
+        'enchant')
+
+
+def check_module(mod, text='', indent='  '):
+    space = (30 - len(mod) - len(text)) * ' '
+    w(indent + '%s%s...  ' % (mod, text) + space)
+    try:
+        __import__(mod)
+        w('OK')
+    except ImportError:
+        w('FAIL')
+    w(os.linesep)
+
+
+def main():
+
+    verify_python()
+
+    print('Checking for modules...')
+    for m in MODULES:
+        check_module(m)
+
+    print('Checking for optional modules...')
+    for m in OPTIONAL_MODULES:
+        check_module(m[0], text=m[1])
+
+    if sys.platform.startswith('win'):
+        print('Checking for Windows specific modules...')
+        for m in WIN32_MODULES:
+            check_module(m)
+
+    verify_versions()
+
+
+if __name__ == u'__main__':
+    main()