pypyodbc.py 文件源码

def dataSources():
    """Return a list with [name, descrition]"""
    dsn = create_buffer(1024)
    desc = create_buffer(1024)
    dsn_len = c_short()
    desc_len = c_short()
    dsn_list = {}
    try:
        lock.acquire()
        if shared_env_h is None:
            AllocateEnv()
    finally:
        lock.release()
    while 1:
        ret = ODBC_API.SQLDataSources(shared_env_h, SQL_FETCH_NEXT, \
            dsn, len(dsn), ADDR(dsn_len), desc, len(desc), ADDR(desc_len))
        if ret == SQL_NO_DATA_FOUND:
            break
        elif not ret in (SQL_SUCCESS, SQL_SUCCESS_WITH_INFO):
            ctrl_err(SQL_HANDLE_ENV, shared_env_h, ret)
        else:
            dsn_list[dsn.value] = desc.value
    return dsn_list