private static string GenerateText(string text, bool replace, ITextVariables variables)
{
if (replace) {
var replacer = new TextReplacer();
return replacer.ReplaceVariables(text, variables);
} else {
return text;
}
}
private XNode GenerateNode(XNode node, string environment, HashSet<string> allEnvironments, ITextVariables variables, bool replace)
{
var element = node as XElement;
if (element != null) {
if (IsElementForEnvironment(element, environment, allEnvironments)) {
if (IsVarElement(element)) {
SetVariable(element, replace, variables);
return null;
} else {
return BuildConfigForEnvironment(element, environment, allEnvironments, replace, variables);
}
} else {
return null;
}
}
var text = node as XText;
if (text != null) {
if (replace) {
var replacer = new TextReplacer();
return new XText(replacer.ReplaceVariables(text.Value, variables));
} else {
return node;
}
}
return node;
}
private void SetVariable(XElement element, bool replace, ITextVariables variables)
{
var name = element.Attributes().First(a => a.Name.LocalName == "name");
if (name != null)
{
var withVars = ReplaceForThisConfig(element, replace);
var value = GenerateText(element.Value, withVars, variables);
variables[name.Value] = value;
}
}
private void CopyAttributes(XElement config, ITextVariables variables, bool replace, XElement output)
{
foreach (XAttribute attr in config.Attributes()) {
if (!IsSpecialAttribute(attr)) {
string value = GenerateText(attr.Value, replace, variables);
output.Add(new XAttribute(attr.Name, value));
}
}
}
private void CopyElements(XElement config, string environment, HashSet<string> allEnvironments, bool replace, ITextVariables variables, XElement output)
{
foreach (XNode node in config.Nodes()) {
XNode nodeToAdd = GenerateNode(node, environment, allEnvironments, variables, replace);
if (nodeToAdd != null) {
output.Add(nodeToAdd);
}
}
}
private XElement BuildConfigForEnvironment(XElement config, string environment, HashSet<string> allEnvironments, bool replace, ITextVariables outerVariables)
{
replace = ReplaceForThisConfig(config, replace);
var output = new XElement(config.Name);
var variables = outerVariables.InnerFrame;
CopyAttributes(config, variables, replace, output);
CopyElements(config, environment, allEnvironments, replace, variables, output);
return output;
}
public ParserReplacer(char[] text, ITextVariables variables, TextWriter output)
{
this.text = text;
this.variables = variables;
this.output = output;
}
public string ReplaceVariables(string text, ITextVariables variables)
{
var output = new StringWriter();
new ParserReplacer(text.ToCharArray(), variables, output).ParseText(0);
return output.ToString();
}
public TextVariablesFrame(IDictionary<string, string> variables, ITextVariables outerFrame)
{
this.variables = variables;
this.outerFrame = outerFrame;
}
public TextVariablesFrame(ITextVariables outerFrame)
: this(new Dictionary<string, string>(), outerFrame)
{
}
