/// <summary>
/// Saves the file into tree.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="filename">The filename.</param>
/// <param name="root">The root.</param>
/// <param name="levelSeparator">The level separator.</param>
public static void SaveFileIntoTree <T>(string filename, Btree <T> root, string levelSeparator = "\t")
{
var fs = new FileStream(filename, FileMode.Create);
var sw = new StreamWriter(fs);
var ret = "";
SaveTree(root, ref ret, 0, levelSeparator);
sw.Write(ret);
sw.Close();
fs.Close();
}
/// <summary>
/// Adds the child.
/// </summary>
/// <param name="nameC">The name c.</param>
/// <returns></returns>
public Btree <T> AddChild(T nameC)
{
var t = new Btree <T>();
t.Name = nameC;
t.Parent = this;
if (Children == null)
{
Children = new List <Btree <T> >();
}
Children.Add(t);
return(Children.Last());
}
/// <summary>
/// Saves the tree.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="node">The node.</param>
/// <param name="ret">The ret.</param>
/// <param name="level">The level.</param>
/// <param name="levelSeparator">The level separator.</param>
private static void SaveTree <T>(Btree <T> node, ref string ret, int level, string levelSeparator = "\t")
{
if (node.Name != null)
{
ret += node.Name;
ret += "\r\n";
}
if (node.Children != null && node.Children.Count > 0)
{
foreach (var c in node.Children)
{
for (var a = 0; a < level; a++)
{
ret += levelSeparator;
}
SaveTree(c, ref ret, level + 1, levelSeparator);
}
}
}
/// <summary>
/// Load a file into a tree structure based on levels. by default '1 \n \t 2' in a file will create a parent with a
/// child node
/// </summary>
/// <typeparam name="T">class type, usually string</typeparam>
/// <param name="filename">The filename.</param>
/// <param name="root">The root.</param>
/// <param name="addfunc">T must be able to be instantiated with a string. call with a=>new T(a) where T is your class, or
/// the return string method</param>
/// <param name="levelSeparator">The level separator.</param>
/// <param name="RecreateFileIfInvalid">if set to <c>true</c> [recreate file if invalid].</param>
/// <exception cref="Exception"></exception>
public static void LoadFileIntoTree <T>(string filename, Btree <T> root, Func <string, T> addfunc,
string levelSeparator = "\t", bool RecreateFileIfInvalid = true)
{
root.Children = new List <Btree <T> >();
FileStream fs = null;
StreamReader sr = null;
try
{
fs = new FileStream(filename, FileMode.OpenOrCreate);
sr = new StreamReader(fs);
var line = sr.ReadLine();
var parentT = root;
var currentlevel = 0;
while (line != null)
{
var level = StringExtras.ContainsSubStringCount(line, levelSeparator);
if (level > (currentlevel + 1))
{
throw new Exception();
}
if (level == 0)
{
parentT = root;
}
else if (currentlevel > (level - 1))
{
while (currentlevel != (level - 1))
{
parentT = parentT.Parent;
currentlevel--;
}
}
var rc = StringExtras.ReplaceAllChars(line, levelSeparator, "");
var t = new Btree <T> {
Name = addfunc(rc), Parent = parentT
};
if (parentT.Children == null)
{
parentT.Children = new List <Btree <T> >();
}
parentT.Children.Add(t);
parentT = t;
currentlevel = level;
redo:
line = sr.ReadLine();
if (line != null && line.Length == 0)
{
goto redo;
}
}
sr.Close();
fs.Close();
}
catch
{
if (sr != null)
{
sr.Close();
}
if (fs != null)
{
fs.Close();
}
if (RecreateFileIfInvalid)
{
if (File.Exists(filename))
{
File.Delete(filename);
}
File.Create(filename);
}
root.Children = new List <Btree <T> >();
}
}
/// <summary>
/// default for strings
/// </summary>
/// <param name="filename"></param>
/// <param name="root"></param>
/// <param name="levelSeparator"></param>
/// <param name="RecreateFileIfInvalid"></param>
public static void LoadFileIntoTree(string filename, Btree <string> root, string levelSeparator = "\t",
bool RecreateFileIfInvalid = true)
{
LoadFileIntoTree(filename, root, s => s, levelSeparator, RecreateFileIfInvalid);
}