[C#]INI文件控制类

[Section]
key=value

  1 abstract class ConfigurationBase
  2 {
  3     public abstract string Path { get; }
  4 
  5     public abstract string Section { get; }
  6 
  7     /// <summary>
  8     /// 指定好编码格式就能支持各种语言文字了
  9     /// </summary>
 10     private readonly Encoding encoding = Encoding.UTF8;
 11 
 12     public void Clear()
 13     {
 14         File.Delete(Path);
 15     }
 16 
 17     public void Save()
 18     {
 19         File.WriteAllLines(Path, lines.ToArray(), encoding);
 20     }
 21 
 22     private readonly List<string> lines;
 23 
 24     protected ConfigurationBase()
 25     {
 26         if (File.Exists(Path))
 27         {
 28             lines = new List<string>(
 29                 File.ReadAllLines(Path, encoding));
 30         }
 31         else
 32         {
 33             lines = new List<string>();
 34         }
 35     }
 36 
 37     protected string Get(string key, string defaultVal)
 38     {
 39         if (lines.Count != 0)
 40         {
 41             string sectionLine = String.Format("[{0}]", Section);
 42             string keyLine = String.Format("{0}=", key);
 43             Regex otherSection = new Regex(@"^\[[^\]+]\]$", RegexOptions.Compiled);
 44 
 45             bool inSection = false;
 46             foreach (string line in lines)
 47             {
 48                 if (sectionLine == line)
 49                 {
 50                     inSection = true;
 51                 }
 52                 else if (otherSection.IsMatch(line))
 53                 {
 54                     if (inSection) break;
 55                 }
 56                 else if (inSection && line.StartsWith(keyLine))
 57                 {
 58                     return line.Substring(keyLine.Length);
 59                 }
 60             }
 61         }
 62         return defaultVal;
 63     }
 64 
 65     protected void Set(string key, string value)
 66     {
 67         string sectionLine = String.Format("[{0}]", Section);
 68         string keyLine = String.Format("{0}=", key);
 69         Regex otherSection = new Regex(@"^\[[^\]+]\]$", RegexOptions.Compiled);
 70         string valueLine = String.Format("{0}{1}", keyLine, value);
 71 
 72         bool inSection = false;
 73         for (int i = 0; i < lines.Count; i++)
 74         {
 75             if (sectionLine == lines[i])
 76             {
 77                 inSection = true;
 78             }
 79             else if (otherSection.IsMatch(lines[i]))
 80             {
 81                 if (inSection)
 82                 {
 83                     lines.Insert(i, valueLine);
 84                     break;
 85                 }
 86             }
 87             else if (inSection && lines[i].StartsWith(keyLine))
 88             {
 89                 lines[i] = valueLine;
 90             }
 91         }
 92         if (inSection)
 93         {
 94             lines.Add(valueLine);
 95         }
 96         else
 97         {
 98             lines.Add(sectionLine);
 99             lines.Add(valueLine);
100         }
101     }
102 }