如何在R中使用`configr`包解析文本连接中的配置内容

install.packages("configr")

library(configr)

database.host = localhost
database.port = 3306
database.username = root
database.password = password

config_file <- "config.txt"
config <- config(config_file)

database_host <- get_config(config, "database.host")

db_connection <- DBI::dbConnect(RMySQL::MySQL(),
                                host = database_host,
                                port = database_port,
                                user = database_username,
                                password = database_password)