高效處理 INI 文件 (WM 用)

Zeuxis  2008-12-14  Notes / Web Coding

在網路上發現的代碼..不過還沒測試..先留著吧
相信不久將來 Window Mobile 的程式會用上

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using System;
using System.Collections.Generic;
using System.Text;
using System.IO;

public class IniCF
{
	/// <summary>
	/// Copyright (C) 2008 [email protected]
	/// Ini文件訪問類(基於Compact Framework 2.0)
	/// 說明：該類是在Window Mobile上使用的，所以為了保證執行高效，丟失了一些ini文件的特性。比如文件中不能有空行，否則讀取不到。

	// Fields
	public string path = string.Empty;

	// Methods
	public IniCF(string iniFilePath)
	{
		this.path = iniFilePath;
	}
	#region 讀取
	/// <summary>
	/// 讀取
	/// </summary>
	/// <param name="ApplicationName">節名</param>
	/// <param name="KeyName">鍵名</param>
	/// <param name="Default">默認值</param>
	/// <param name="FileName">ini文件名</param>
	/// <returns></returns>
	private string GetPrivateProfileString(string ApplicationName, string KeyName, string Default, string FileName)
	{
		string str = string.Format("[{0}]", ApplicationName);
		string str2 = KeyName + "=";
		StreamReader reader = null;
		try
		{
			string str3 = string.Empty;
			bool flag = false;
			reader = new StreamReader(FileName, Encoding.Default);
			str3 = reader.ReadLine();
			for (str3 = (str3 == null) ? string.Empty : str3.Trim(); str3.Length > 0; str3 = (str3 == null) ? string.Empty : str3.Trim())
			{
				if (!flag)
				{
					if (str3 == str)
					{
						flag = true;
					}
				}
				else
				{
					if (str3.StartsWith("[") && str3.EndsWith("]"))
					{
						return Default;
					}
					if (str3.StartsWith(str2))
					{
						return str3.Substring(KeyName.Length + 1);
					}
				}
				str3 = reader.ReadLine();
			}
		}
		catch
		{
		}
		finally
		{
			if (reader != null)
			{
				reader.Close();
			}
		}
		return Default;
	}
	#endregion

	#region 寫入

	/// <summary>
	/// ini文件寫入
	/// </summary>
	/// <param name="ApplicationName">節名</param>
	/// <param name="KeyName">鍵名</param>
	/// <param name="Value">要寫入的值</param>
	/// <param name="FileName">ini文件</param>
	private void WritePrivateProfileString(string ApplicationName, string KeyName, string Value, string FileName)
	{
		string str = string.Format("[{0}]", ApplicationName);
		string str2 = KeyName + "=";
		try
		{
			StringBuilder builder = new StringBuilder();
			bool flag = false;
			bool flag2 = false;
			bool flag3 = true;
			StreamReader reader = new StreamReader(FileName, Encoding.Default);
			string str3 = reader.ReadLine();
			for (str3 = (str3 == null) ? string.Empty : str3.Trim(); str3.Length > 0; str3 = (str3 == null) ? string.Empty : str3.Trim())
			{
				if (flag3)
				{
					if (!flag2)
					{
						builder.Append((builder.Length == 0) ? string.Empty : "\r\n");
						builder.Append(str3);
						if (str3 == str)
						{
							flag2 = true;
						}
					}
					else if (str3.StartsWith("[") && str3.EndsWith("]"))
					{
						builder.Append(string.Format("\r\n{0}={1}", KeyName, Value));
						builder.Append(string.Format("\r\n{0}", str3));
						flag = true;
						flag3 = false;
					}
					else if (str3.StartsWith(str2))
					{
						builder.Append(string.Format("\r\n{0}={1}", KeyName, Value));
						flag = true;
						flag3 = false;
					}
					else
					{
						builder.Append(string.Format("\r\n{0}", str3));
					}
				}
				else
				{
					builder.Append(string.Format("\r\n{0}", str3));
				}
				str3 = reader.ReadLine();
			}
			reader.Close();
			if (!flag2)
			{
				builder.Append((builder.Length == 0) ? string.Empty : "\r\n");
				builder.Append(string.Format("[{0}]", ApplicationName));
			}
			if (!flag)
			{
				builder.Append(string.Format("\r\n{0}={1}", KeyName, Value));
			}
			StreamWriter writer = new StreamWriter(FileName, false, Encoding.Default);
			writer.Write(builder);
			writer.Close();
		}
		catch
		{
		}
	}
	#endregion

	public string IniReadValue(string Section, string Key)
	{
		return this.GetPrivateProfileString(Section, Key, string.Empty, this.path);
	}

	public void IniWriteValue(string Section, string Key, string Value)
	{
		this.WritePrivateProfileString(Section, Key, Value, this.path);
	}
}
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