优化参数初始化方式

options.go

@@ -0,0 +1,57 @@
+package gormx
+
+type clientOptions struct {
+	Db            string
+	Mysql         *MysqlOptions
+	Sqlite        *SqliteOptions
+	Prefix        string // 表名前缀，`Article` 的表名应该是 `it_articles`
+	SingularTable bool // 使用单数表名，启用该选项，此时，`Article` 的表名应该是 `it_article`
+}
+
+type MysqlOptions struct {
+	User     string
+	Password string
+	Host     string
+	Port     int
+	Database string
+}
+
+type SqliteOptions struct {
+	DbPath string
+}
+
+func defaultOptions() clientOptions {
+	return clientOptions{
+		SingularTable: true,
+	}
+}
+
+type Option func(*clientOptions)
+
+func SetMysql(user, password, host, database string, port int) Option {
+	return func(o *clientOptions) {
+		o.Db = "mysql"
+		o.Mysql = &MysqlOptions{
+			User:     user,
+			Host:     host,
+			Port:     port,
+			Database: database,
+			Password: password,
+		}
+	}
+}
+
+func SetSqlite(dbPath string) Option {
+	return func(o *clientOptions) {
+		o.Db = "sqlite"
+		o.Sqlite = &SqliteOptions{
+			DbPath: dbPath,
+		}
+	}
+}
+
+func SetTablePrefix(perfix string) Option {
+	return func(o *clientOptions) {
+		o.Prefix = perfix
+	}
+}