X-Git-Url: http://git.veekun.com/zzz-pokedex.git/blobdiff_plain/2c0980e4dcadaa31d7ea7ebab174a6fd81723090..2c94dcb72535499c43958ceb9d1ca6af25740995:/pokedex/__init__.py?ds=inline diff --git a/pokedex/__init__.py b/pokedex/__init__.py index 02b8ce5..e4397af 100644 --- a/pokedex/__init__.py +++ b/pokedex/__init__.py @@ -1,176 +1,287 @@ # encoding: utf8 +from optparse import OptionParser +import os import sys -from sqlalchemy.exc import IntegrityError -import sqlalchemy.types - -from .db import connect, metadata, tables as tables_module +# XXX importing pokedex.whatever should not import all these +import pokedex.db +import pokedex.db.load +import pokedex.db.tables +import pokedex.lookup +from pokedex import defaults def main(): if len(sys.argv) <= 1: - help() + command_help() command = sys.argv[1] args = sys.argv[2:] + # XXX there must be a better way to get Unicode argv + # XXX this doesn't work on Windows durp + enc = sys.stdin.encoding or 'utf8' + args = [_.decode(enc) for _ in args] + # Find the command as a function in this file - func = globals().get(command, None) - if func and callable(func) and command != 'main': + func = globals().get("command_%s" % command, None) + if func: func(*args) else: - help() - - -def csvimport(engine_uri, directory='.'): - import csv - - from sqlalchemy.orm.attributes import instrumentation_registry - - # Use autocommit in case rows fail due to foreign key incest - session = connect(engine_uri, autocommit=True, autoflush=False) - - metadata.create_all() - - # SQLAlchemy is retarded and there is no way for me to get a list of ORM - # classes besides to inspect the module they all happen to live in for - # things that look right. - table_base = tables_module.TableBase - orm_classes = {} # table object => table class - - for name in dir(tables_module): - # dir() returns strings! How /convenient/. - thingy = getattr(tables_module, name) - - if not isinstance(thingy, type): - # Not a class; bail - continue - elif not issubclass(thingy, table_base): - # Not a declarative table; bail - continue - elif thingy == table_base: - # Declarative table base, so not a real table; bail - continue - - # thingy is definitely a table class! Hallelujah. - orm_classes[thingy.__table__] = thingy - - # Okay, run through the tables and actually load the data now - for table_obj in metadata.sorted_tables: - table_class = orm_classes[table_obj] - table_name = table_obj.name - - # Print the table name but leave the cursor in a fixed column - print table_name + '...', ' ' * (40 - len(table_name)), - sys.stdout.flush() - - try: - csvfile = open("%s/%s.csv" % (directory, table_name), 'rb') - except IOError: - # File doesn't exist; don't load anything! - print 'no data!' - continue - - reader = csv.reader(csvfile, lineterminator='\n') - column_names = [unicode(column) for column in reader.next()] - - # Self-referential tables may contain rows with foreign keys of - # other rows in the same table that do not yet exist. We'll keep - # a running list of these and try inserting them again after the - # rest are done - failed_rows = [] - - for csvs in reader: - row = table_class() - - for column_name, value in zip(column_names, csvs): - column = table_obj.c[column_name] - if column.nullable and value == '': - # Empty string in a nullable column really means NULL - value = None - elif isinstance(column.type, sqlalchemy.types.Boolean): - # Boolean values are stored as string values 0/1, but both - # of those evaluate as true; SQLA wants True/False - if value == '0': - value = False - else: - value = True - else: - # Otherwise, unflatten from bytes - value = value.decode('utf-8') - - setattr(row, column_name, value) - - try: - session.add(row) - session.flush() - except IntegrityError as e: - failed_rows.append(row) - - # Loop over the failed rows and keep trying to insert them. If a loop - # doesn't manage to insert any rows, bail. - do_another_loop = True - while failed_rows and do_another_loop: - do_another_loop = False - - for i, row in enumerate(failed_rows): - try: - session.add(row) - session.flush() - - # Success! - del failed_rows[i] - do_another_loop = True - except IntegrityError as e: - pass - - if failed_rows: - print len(failed_rows), "rows failed" + command_help() + + +def get_parser(verbose=True): + """Returns an OptionParser prepopulated with the global options. + + `verbose` is whether or not the options should be verbose by default. + """ + parser = OptionParser() + parser.add_option('-e', '--engine', dest='engine_uri', default=None) + parser.add_option('-i', '--index', dest='index_dir', default=None) + parser.add_option('-q', '--quiet', dest='verbose', default=verbose, action='store_false') + parser.add_option('-v', '--verbose', dest='verbose', default=verbose, action='store_true') + return parser + +def get_session(options): + """Given a parsed options object, connects to the database and returns a + session. + """ + + engine_uri = options.engine_uri + got_from = 'command line' + + if engine_uri is None: + engine_uri, got_from = defaults.get_default_db_uri_with_origin() + + session = pokedex.db.connect(engine_uri) + + if options.verbose: + print "Connected to database %(engine)s (from %(got_from)s)" \ + % dict(engine=session.bind.url, got_from=got_from) + + return session + +def get_lookup(options, session=None, recreate=False): + """Given a parsed options object, opens the whoosh index and returns a + PokedexLookup object. + """ + + if recreate and not session: + raise ValueError("get_lookup() needs an explicit session to regen the index") + + index_dir = options.index_dir + got_from = 'command line' + + if index_dir is None: + index_dir, got_from = defaults.get_default_index_dir_with_origin() + + if options.verbose: + print "Opened lookup index %(index_dir)s (from %(got_from)s)" \ + % dict(index_dir=index_dir, got_from=got_from) + + lookup = pokedex.lookup.PokedexLookup(index_dir, session=session) + + if recreate: + lookup.rebuild_index() + + return lookup + +def get_csv_directory(options): + """Prints and returns the csv directory we're about to use.""" + + if not options.verbose: + return + + csvdir = options.directory + got_from = 'command line' + + if csvdir is None: + csvdir, got_from = defaults.get_default_csv_dir_with_origin() + + print "Using CSV directory %(csvdir)s (from %(got_from)s)" \ + % dict(csvdir=csvdir, got_from=got_from) + + return csvdir + + +### Plumbing commands + +def command_dump(*args): + parser = get_parser(verbose=True) + parser.add_option('-d', '--directory', dest='directory', default=None) + options, tables = parser.parse_args(list(args)) + + session = get_session(options) + get_csv_directory(options) + + pokedex.db.load.dump(session, directory=options.directory, + tables=tables, + verbose=options.verbose) + +def command_load(*args): + parser = get_parser(verbose=True) + parser.add_option('-d', '--directory', dest='directory', default=None) + parser.add_option('-D', '--drop-tables', dest='drop_tables', default=False, action='store_true') + parser.add_option('-S', '--safe', dest='safe', default=False, action='store_true', + help="Do not use backend-specific optimalizations.") + options, tables = parser.parse_args(list(args)) + + if not options.engine_uri: + print "WARNING: You're reloading the default database, but not the lookup index. They" + print " might get out of sync, and pokedex commands may not work correctly!" + print "To fix this, run `pokedex reindex` when this command finishes. Or, just use" + print "`pokedex setup` to do both at once." + print + + session = get_session(options) + get_csv_directory(options) + + pokedex.db.load.load(session, directory=options.directory, + drop_tables=options.drop_tables, + tables=tables, + verbose=options.verbose, + safe=options.safe) + +def command_reindex(*args): + parser = get_parser(verbose=True) + options, _ = parser.parse_args(list(args)) + + session = get_session(options) + lookup = get_lookup(options, session=session, recreate=True) + + print "Recreated lookup index." + + +def command_setup(*args): + parser = get_parser(verbose=False) + options, _ = parser.parse_args(list(args)) + + options.directory = None + + session = get_session(options) + get_csv_directory(options) + pokedex.db.load.load(session, directory=None, drop_tables=True, + verbose=options.verbose, + safe=False) + + lookup = get_lookup(options, session=session, recreate=True) + + print "Recreated lookup index." + + +def command_status(*args): + parser = get_parser(verbose=True) + options, _ = parser.parse_args(list(args)) + options.verbose = True + options.directory = None + + # Database, and a lame check for whether it's been inited at least once + session = get_session(options) + print " - OK! Connected successfully." + + if pokedex.db.tables.Pokemon.__table__.exists(session.bind): + print " - OK! Database seems to contain some data." + else: + print " - WARNING: Database appears to be empty." + + # CSV; simple checks that the dir exists + csvdir = get_csv_directory(options) + if not os.path.exists(csvdir): + print " - ERROR: No such directory!" + elif not os.path.isdir(csvdir): + print " - ERROR: Not a directory!" + else: + print " - OK! Directory exists." + + if os.access(csvdir, os.R_OK): + print " - OK! Can read from directory." + else: + print " - ERROR: Can't read from directory!" + + if os.access(csvdir, os.W_OK): + print " - OK! Can write to directory." else: - print 'loaded' + print " - WARNING: Can't write to directory! " \ + "`dump` will not work. You may need to sudo." -def csvexport(engine_uri, directory='.'): - import csv - session = connect(engine_uri) + # Index; the PokedexLookup constructor covers most tests and will + # cheerfully bomb if they fail + lookup = get_lookup(options, recreate=False) + print " - OK! Opened successfully." - for table_name in sorted(metadata.tables.keys()): - print table_name - table = metadata.tables[table_name] - writer = csv.writer(open("%s/%s.csv" % (directory, table_name), 'wb'), - lineterminator='\n') - columns = [col.name for col in table.columns] - writer.writerow(columns) +### User-facing commands - for row in session.query(table).all(): - csvs = [] - for col in columns: - # Convert Pythony values to something more universal - val = getattr(row, col) - if val == None: - val = '' - elif val == True: - val = '1' - elif val == False: - val = '0' - else: - val = unicode(val).encode('utf-8') +def command_lookup(*args): + parser = get_parser(verbose=False) + options, words = parser.parse_args(list(args)) - csvs.append(val) + name = u' '.join(words) - writer.writerow(csvs) + session = get_session(options) + lookup = get_lookup(options, session=session, recreate=False) + results = lookup.lookup(name) + if not results: + print "No matches." + elif results[0].exact: + print "Matched:" + else: + print "Fuzzy-matched:" -def help(): - print u"""pokedex -- a command-line Pokédex interface + for result in results: + if hasattr(result.object, 'full_name'): + name = result.object.full_name + else: + name = result.object.name + + print "%s: %s" % (result.object.__tablename__, name), + if result.language: + print "(%s in %s)" % (result.name, result.language) + else: + print - help Displays this message. - These commands are only useful for developers: - csvimport {uri} [dir] Import data from a set of CSVs to the database - given by the URI. - csvexport {uri} [dir] Export data from the database given by the URI - to a set of CSVs. - Directory defaults to cwd. -""" +def command_help(): + print u"""pokedex -- a command-line Pokédex interface +usage: pokedex {command} [options...] +Run `pokedex setup` first, or nothing will work! +See http://bugs.veekun.com/projects/pokedex/wiki/CLI for more documentation. + +Commands: + help Displays this message. + lookup [thing] Look up something in the Pokédex. + +System commands: + load Load Pokédex data into a database from CSV files. + dump Dump Pokédex data from a database into CSV files. + reindex Rebuilds the lookup index from the database. + setup Combines load and reindex. + status No effect, but prints which engine, index, and csv + directory would be used for other commands. + +Global options: + -e|--engine=URI By default, all commands try to use a SQLite database + in the pokedex install directory. Use this option (or + a POKEDEX_DB_ENGINE environment variable) to specify an + alternate database. + -i|--index=DIR By default, all commands try to put the lookup index in + the pokedex install directory. Use this option (or a + POKEDEX_INDEX_DIR environment variable) to specify an + alternate loction. + -q|--quiet Don't print system output. This is the default for + non-system commands and setup. + -v|--verbose Print system output. This is the default for system + commands, except setup. + +System options: + -d|--directory=DIR By default, load and dump will use the CSV files in the + pokedex install directory. Use this option to specify + a different directory. + -D|--drop-tables With load, drop all tables before loading data. + + Additionally, load and dump accept a list of table names (possibly with + wildcards) and/or csv fileames as an argument list. +""".encode(sys.getdefaultencoding(), 'replace') sys.exit(0)