X-Git-Url: http://git.veekun.com/zzz-pokedex.git/blobdiff_plain/217d61aa29beaa5503618af52e2c17cd9e8acc1b..c87f91105dbce6befb0d4b68c1d6b9bb2a69e805:/pokedex/__init__.py diff --git a/pokedex/__init__.py b/pokedex/__init__.py index e142ae6..e69de29 100644 --- a/pokedex/__init__.py +++ b/pokedex/__init__.py @@ -1,192 +0,0 @@ -# encoding: utf8 -import sys - -from sqlalchemy.exc import IntegrityError -import sqlalchemy.types - -from .db import connect, metadata, tables as tables_module -from pokedex.lookup import lookup as pokedex_lookup - -def main(): - if len(sys.argv) <= 1: - help() - - command = sys.argv[1] - args = sys.argv[2:] - - # Find the command as a function in this file - func = globals().get("command_%s" % command, None) - if func: - func(*args) - else: - command_help() - - -def command_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, 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, e: - pass - - if failed_rows: - print len(failed_rows), "rows failed" - else: - print 'loaded' - -def command_csvexport(engine_uri, directory='.'): - import csv - session = connect(engine_uri) - - 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) - - primary_key = table.primary_key - for row in session.query(table).order_by(*primary_key).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') - - csvs.append(val) - - writer.writerow(csvs) - -def command_lookup(engine_uri, name): - # XXX don't require uri! somehow - session = connect(engine_uri) - - results, exact = pokedex_lookup(session, name) - if exact: - print "Matched:" - else: - print "Fuzzy-matched:" - - for object in results: - print object.__tablename__, object.name - - -def command_help(): - print u"""pokedex -- a command-line Pokédex interface - - help Displays this message. - lookup {uri} [name] Look up something in the Pokédex. - - 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. -""".encode(sys.getdefaultencoding(), 'replace') - - sys.exit(0)