private void setLeafValue(String path, ENAMLStem subtree, String val)
{
int dotpos = path.IndexOf('.');
if (dotpos != -1) //path is name.subpath
{
String name = path.Substring(0, dotpos);
String subpath = path.Substring(dotpos + 1);
if (!subtree.children.ContainsKey(name))
{
subtree.children[name] = new ENAMLStem(subtree.fullpath + '.' + name);
}
setLeafValue(subpath, (ENAMLStem)subtree.children[name], val);
}
else
{
if (!subtree.children.ContainsKey(path))
{
subtree.children[path] = new ENAMLLeaf(subtree.fullpath + '.' + path, val);
}
else
{
ENAMLNode pathend = subtree.children[path]; //last node in a path has to be a leaf node
if (pathend is ENAMLLeaf)
{
((ENAMLLeaf)pathend).value = val; //to (re)store val in
}
else
{
throw new ENAMLPathException("path [" + pathend.fullpath + "is not an endpoint");
}
}
}
}
//gets the string from a leaf node at end of a path
private String findLeafValue(String path)
{
String result = null;
String leafname = "";
ENAMLStem subpath = null;
int leafpos = path.LastIndexOf('.');
if (leafpos != -1)
{
leafname = path.Substring(leafpos + 1); //split the leaf node name from the end of the path
path = path.Substring(0, leafpos);
subpath = getSubPath(path); //get stem node that is parent to this leaf node
}
else
{
leafname = path;
subpath = root;
}
if ((subpath != null) && (subpath.children.ContainsKey(leafname)))
{
ENAMLNode leaf = subpath.children[leafname]; //then get the leaf node child
if (leaf != null && leaf is ENAMLLeaf) //these should both be true, check anyway
{
result = ((ENAMLLeaf)leaf).value; //and return it's value
}
}
return(result);
}
private void storeNode(List <string> lines, ENAMLNode node, String indent, String name)
{
String line = indent + name + ":";
if (node is ENAMLLeaf)
{
lines.Add(line + " " + ((ENAMLLeaf)node).value);
}
else
{
lines.Add(line);
storeSubTree(lines, (ENAMLStem)node, indent + indentStr);
}
}
//gets stem node at end of a subpath (a path with the ending leaf node removed)
private ENAMLStem getSubPath(String path)
{
string[] parts = path.Split(sep); //split xxx.yyy.zzz into (xxx, yyy, zzz)
ENAMLNode subtree = root;
for (int i = 0; i < parts.Length; i++)
{
string name = parts[i];
if ((subtree is ENAMLStem) && (((ENAMLStem)subtree).children.ContainsKey(name)))
{
subtree = ((ENAMLStem)subtree).children[name];
}
else
{
return(null);
}
}
if (subtree is ENAMLStem) //last node in subpath has to be a stem node
{
return((ENAMLStem)subtree);
}
return(null);
}
