Unity轻量级本地数据持久化
/***
*
* Title: MXFramework
* 主题: 轻量级的Json文本读写
* Description:
* 功能：1.Json格式文本数据,增.删.改.查
* 2.数据加密功能
* ps:修改数据时间复杂化比较高，如果要进行大量数据读写建议安装数据库
*
* Date: 2019
* Version: 1.3.1版本
* Modify Recoder:
*
*/
using System.Collections.Generic;
using System.IO;
using UnityEngine;
namespace Mx.Util
{
/// <summary>Json格式文本数据,增.删.改.查</summary>
public class JsonTextUtil
{
#region 数据声明
public delegate bool DelCondition<T>(T data);
#endregion
#region 公开函数
/// <summary>
/// 添加一条数据
/// </summary>
/// <param name="textPath">数据保存文本路径</param>
/// <param name="data">需要添加的数据</param>
public static void Add(string textPath, string data)
{
WriteData(textPath, data);
}
/// <summary>
/// 添加一条数据
/// </summary>
/// <typeparam name="T">泛型类数据（只能是Json可序列化类型）</typeparam>
/// <param name="textPath">数据保存文本路径</param>
/// <param name="data">需要保存的数据（只能是Json可序列化类型）</param>
public static void Add<T>(string textPath, T data)
{
string temp = JsonUtility.ToJson(data);
Add(textPath, temp);
}
/// <summary>
/// 删除指定条件的数据
/// </summary>
/// <param name="textPath">数据保存文本路径</param>
/// <param name="condition">筛选条件</param>
public static void Delete<T>(string textPath, DelCondition<T> condition)
{
DeleteData<T>(textPath, condition);
}
/// <summary>
/// 修改指定条件数据
/// </summary>
/// <param name="textPath">数据保存文本路径</param>
/// <param name="newData">新数据</param>
/// <param name="condition">条件集合</param>
/// <param name="isCreate">修改数据不存在的情况下是否创建一条新数据</param>
public static void Modify<T>(string textPath, T newData, DelCondition<T> condition, bool isCreate = true)
{
ModifyData<T>(textPath, newData, condition, isCreate);
}
/// <summary>
/// 查找数据
/// </summary>
/// <typeparam name="T">泛型类数据（只能是Json可序列化类型）</typeparam>
/// <param name="textPath">数据保存文本路径</param>
/// <param name="condition">条件集合</param>
/// <returns></returns>
public static T[] Find<T>(string textPath, DelCondition<T> condition)
{
return FindData<T>(textPath, condition);
}
/// <summary>
/// 读取一个表格的数据
/// </summary>
/// <typeparam name="T">泛型类数据（只能是Json可序列化类型）</typeparam>
/// <param name="textPath">数据保存文本路径</param>
/// <returns></returns>
public static T ReadText<T>(string textPath)
{
return ReadTextData<T>(textPath);
}
/// <summary>
/// 读取一个表格的数据
/// </summary>
/// <typeparam name="T">泛型类数据（只能是Json可序列化类型）</typeparam>
/// <param name="textPath">数据保存文本路径</param>
/// <returns></returns>
public static T[] ReadTextToArray<T>(string textPath)
{
return ReadTextDataArray<T>(textPath);
}
/// <summary>
/// 删除文本
/// </summary>
/// <param name="textPaths"></param>
public static void DeleteText(params string[] textPaths)
{
for (int i = 0; i < textPaths.Length; i++)
{
string textPath = textPaths[i];
if (File.Exists(textPath)) File.Delete(textPath);
}
}
#endregion
#region 私有函数
private static void WriteData(string textPath, string data)
{
if (string.IsNullOrEmpty(textPath) || string.IsNullOrEmpty(data)) return;
StreamWriter sw = null;
if (!File.Exists(textPath)) sw = File.CreateText(textPath);
else sw = File.AppendText(textPath);
sw.WriteLine(data + '\n');
sw.Close();
sw.Dispose();
Debug.Log("Mx.Util/JsonTxtUtil/WriteData()/ Save data success. textPath:" + textPath);
}
private static T ReadTextData<T>(string textPath)
{
T temp;
StreamReader streamReader = null;
if (File.Exists(textPath)) streamReader = File.OpenText(textPath);
else { return default(T); }
string str = streamReader.ReadToEnd();
temp = JsonUtility.FromJson<T>(str);
streamReader.Close();
streamReader.Dispose();
return temp;
}
private static T[] ReadTextDataArray<T>(string textPath)
{
List<T> temp = new List<T>();
StreamReader streamReader = null;
if (File.Exists(textPath)) streamReader = File.OpenText(textPath);
else { return default(T[]); }
string str;
while ((str = streamReader.ReadLine()) != null)
{
if (!string.IsNullOrEmpty(str)){ temp.Add(JsonUtility.FromJson<T>(str));}
}
return temp.ToArray();
}
private static T[] FindData<T>(string textPath, DelCondition<T> condition)
{
if(!File.Exists(textPath)) return default(T[]);
List<T> tempList=new List<T>();
T[] tempArr = ReadTextDataArray<T>(textPath);
for (int i = 0; i < tempArr.Length; i++)
{
if (condition(tempArr[i])) { tempList.Add(tempArr[i]); }
}
return tempList.ToArray();
}
public static void DeleteData<T>(string textPath, DelCondition<T> condition)
{
if (!File.Exists(textPath)) return;
bool isDelete = false;
string res = string.Empty;
T[] tempArr = ReadTextDataArray<T>(textPath);
for (int i = 0; i < tempArr.Length; i++)
{
if (!condition(tempArr[i])) { res += JsonUtility.ToJson(tempArr[i]); }
else isDelete = true;
}
if (!isDelete || string.IsNullOrEmpty(res)) return;
File.Delete(textPath);
Add(textPath, res);
}
private static void ModifyData<T>(string textPath, T newData, DelCondition<T> condition, bool isCreate = true)
{
if (!File.Exists(textPath))
{
if (isCreate) Add<T>(textPath, newData);
return;
}
bool isModify = false;
string res = string.Empty;
T[] tempArr = ReadTextDataArray<T>(textPath);
for (int i = 0; i < tempArr.Length; i++)
{
if (!condition(tempArr[i])) { res += JsonUtility.ToJson(tempArr[i]); }
else
{
res += JsonUtility.ToJson(newData);
isModify = true;
}
}
if (!isModify || string.IsNullOrEmpty(res)) return;
File.Delete(textPath);
Add(textPath, res);
}
#endregion
}
}
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