From 755e7bd866100b38d222caf33fcb30d2f167bb91 Mon Sep 17 00:00:00 2001 From: Oleg Broytman Date: Tue, 5 Apr 2016 21:04:54 +0300 Subject: [PATCH] Minor refactoring --- m_librarian/db.py | 134 +++++++++++++++++++++++----------------------- 1 file changed, 67 insertions(+), 67 deletions(-) diff --git a/m_librarian/db.py b/m_librarian/db.py index 7ae3ed3..9363167 100755 --- a/m_librarian/db.py +++ b/m_librarian/db.py @@ -12,73 +12,6 @@ from sqlobject import SQLObject, StringCol, UnicodeCol, IntCol, BoolCol, \ from .config import get_config -def _find_sqlite_db_dirs_posix(): - db_dirs = [] - if 'XDG_CACHE_HOME' in os.environ: - db_dirs.append(os.environ['XDG_CACHE_HOME']) - home_cache = os.path.expanduser('~/.cache') - if home_cache not in db_dirs: - db_dirs.append(home_cache) - return db_dirs - - -def find_sqlite_db_dirs(): - if os.name == 'posix': - return _find_sqlite_db_dirs_posix() - raise OSError("Unknow OS") - - -def find_sqlite_dburi(db_dirs=None): - if db_dirs is None: - db_dirs = find_sqlite_db_dirs() - for d in db_dirs: - db_file = os.path.join(d, 'm_librarian.sqlite') - if os.path.exists(db_file): - break - else: - # octal; -rw-------; - # make the database file/directory readable/writeable only by the user - os.umask(0066) - db_dir = db_dirs[0] - try: - os.makedirs(db_dir) - except OSError: # Perhaps already exists - pass - db_file = os.path.join(db_dir, 'm_librarian.sqlite') - - return 'sqlite://%s' % db_file.replace(os.sep, '/') - - -def open_db(db_uri=None): - if db_uri is None: - try: - db_uri = get_config().get('database', 'URI') - except: - db_uri = find_sqlite_dburi() - - sqlhub.processConnection = connection = connectionForURI(db_uri) - - if connection.dbName == 'sqlite': - def lower(s): - return s.lower() - - sqlite = connection.module - - class MLConnection(sqlite.Connection): - def __init__(self, *args, **kwargs): - super(MLConnection, self).__init__(*args, **kwargs) - self.create_function('lower', 1, lower) - - # This hack must be done at the very beginning, before the first query - connection._connOptions['factory'] = MLConnection - - # Speedup SQLite connection - connection.query("PRAGMA synchronous=OFF") - connection.query("PRAGMA count_changes=OFF") - connection.query("PRAGMA journal_mode=MEMORY") - connection.query("PRAGMA temp_store=MEMORY") - - class Author(SQLObject): surname = UnicodeCol(notNull=True) name = UnicodeCol(notNull=True) @@ -165,6 +98,73 @@ class Language(SQLObject): count_idx = DatabaseIndex(count) +def _find_sqlite_db_dirs_posix(): + db_dirs = [] + if 'XDG_CACHE_HOME' in os.environ: + db_dirs.append(os.environ['XDG_CACHE_HOME']) + home_cache = os.path.expanduser('~/.cache') + if home_cache not in db_dirs: + db_dirs.append(home_cache) + return db_dirs + + +def find_sqlite_db_dirs(): + if os.name == 'posix': + return _find_sqlite_db_dirs_posix() + raise OSError("Unknow OS") + + +def find_sqlite_dburi(db_dirs=None): + if db_dirs is None: + db_dirs = find_sqlite_db_dirs() + for d in db_dirs: + db_file = os.path.join(d, 'm_librarian.sqlite') + if os.path.exists(db_file): + break + else: + # octal; -rw-------; + # make the database file/directory readable/writeable only by the user + os.umask(0066) + db_dir = db_dirs[0] + try: + os.makedirs(db_dir) + except OSError: # Perhaps already exists + pass + db_file = os.path.join(db_dir, 'm_librarian.sqlite') + + return 'sqlite://%s' % db_file.replace(os.sep, '/') + + +def open_db(db_uri=None): + if db_uri is None: + try: + db_uri = get_config().get('database', 'URI') + except: + db_uri = find_sqlite_dburi() + + sqlhub.processConnection = connection = connectionForURI(db_uri) + + if connection.dbName == 'sqlite': + def lower(s): + return s.lower() + + sqlite = connection.module + + class MLConnection(sqlite.Connection): + def __init__(self, *args, **kwargs): + super(MLConnection, self).__init__(*args, **kwargs) + self.create_function('lower', 1, lower) + + # This hack must be done at the very beginning, before the first query + connection._connOptions['factory'] = MLConnection + + # Speedup SQLite connection + connection.query("PRAGMA synchronous=OFF") + connection.query("PRAGMA count_changes=OFF") + connection.query("PRAGMA journal_mode=MEMORY") + connection.query("PRAGMA temp_store=MEMORY") + + def init_db(): try: Book.select()[0] -- 2.39.5