import sqlite3
import sys
import json
import base64

def show_usage():
    print 'Usage:\n\tlite2j sqlitefile.db --exclude=table_name --exclude=table_name'

exclude_tables = []

try:
    for i, token in enumerate(sys.argv):
        if i < 1:
            continue
        if i == 1:
            db_file = token
        if i > 1:
            exclude_tables.append(token.split('--exclude=')[1])
    assert(db_file)
except (IndexError, NameError):
    show_usage()
    sys.exit(127)

exclude_tables = set(exclude_tables)

# Make sure blobs are base64 encoded
sqlite3.register_converter('BLOB', base64.b64encode)

conn = sqlite3.connect(db_file, detect_types=sqlite3.PARSE_DECLTYPES)
cursor = conn.cursor()

def get_table_list(cursor, exclude_tables=exclude_tables):
    cursor.execute('SELECT * FROM main.sqlite_master WHERE type="table"')
    return set(row[1] for row in cursor.fetchall()) - exclude_tables

def get_column_names(cursor, table_name):
    cursor.execute('SELECT * FROM %s' % table_name)
    return [c[0] for c in cursor.description]

def get_table(cursor, table_name):
    column_names = get_column_names(cursor,table_name)
    cursor.execute('SELECT * FROM main.%s' % table_name)
    return [dict(zip(column_names, row)) for row in cursor.fetchall()]

def get_tables(cursor):
    table_list = get_table_list(cursor)
    return [{table_name : get_table(cursor, table_name) for table_name in table_list}]

print json.dumps(get_tables(cursor))