static public string evalRef(string refer, out bool found)
{
string value = null;
found = false;
TestState ts = TestState.getOnly();
Instruction ins = null;
string data = null;
// is there a '.' ?
int dot = refer.IndexOf('.');
if (-1 == dot)
{ // no dot, get the default data or function value
value = Functions.identifyAndEvaluate(refer);
found = value != null;
if (!found)
{
ins = ts.Instruction(refer);
}
}
else
{ // has a dot, so split it and get the parts.
string refer2 = refer.Substring(0, dot);
try { data = refer.Substring(dot + 1); } // don't take the dot
catch (ArgumentOutOfRangeException)
{ data = null; }
ins = ts.Instruction(refer2);
if (data == "")
{
data = null;
}
}
if (!found)
{
found = ins != null;
if (found)
{
value = ins.GetDataImage(data);
}
else
{
value = refer; // not a reference
}
}
return(value);
}
/// <summary>
/// Execute method.
/// If not already bound, this variable will be assigned a vaule.
/// The variable may be bound when it is "built" or "interpreted".
/// If bound when built, the variable may only reference preceding
/// instruction settings (not results) and other built-bound vars.
///
/// When there is reg, env or set data, it replaces the old data.
/// When there is add data, it is added if old and add are numbers,
/// or it is appended to the old data.
/// When there is set and add data, set replaces the old data and
/// add is added or appended.
/// @env and @reg get values from the environment and the registry.
/// The order of concatenation is @reg, @env, @set then @add.
/// </summary>
public override void Execute()
{ // Bind the variable to a value if not already bound
if (!m_bound)
{ // not already bound.
m_log = Logger.getOnly(); // the log set in Instruction creation may be in another TestState
TestState ts = TestState.getOnly();
Instruction ins = ts.Instruction(m_id);
if (ins != null)
{ // already one with this name
m_val = ins.GetDataImage(null);
m_log.paragraph("Found var " + m_id + " with value=" + m_val);
// remove the old ins from ts
ts.RemoveInstruction(m_id);
if (m_reg != null || m_env != null || m_set != null)
{
m_val = null; // don't use previous value
}
}
if (m_reg != null)
{
string value = null;
string key;
RegistryKey regkey = Utilities.parseRegKey(m_reg, out key);
if (regkey != null)
{
RegistryValueKind rvk = regkey.GetValueKind(key);
switch (rvk)
{
case RegistryValueKind.Binary:
m_log.paragraph("Reg key is Binary");
value = Convert.ToString(regkey.GetValue(key));
break;
case RegistryValueKind.DWord:
m_log.paragraph("Reg key is DWord");
value = Convert.ToString(regkey.GetValue(key));
break;
case RegistryValueKind.ExpandString:
m_log.paragraph("Reg key is ExpandString");
value = Convert.ToString(regkey.GetValue(key));
break;
case RegistryValueKind.MultiString:
m_log.paragraph("Reg key is MultiString");
value = Convert.ToString(regkey.GetValue(key));
break;
case RegistryValueKind.QWord:
m_log.paragraph("Reg key is QWord");
value = Convert.ToString(regkey.GetValue(key));
break;
case RegistryValueKind.String:
value = (string)regkey.GetValue(key);
break;
case RegistryValueKind.Unknown:
m_log.paragraph("Reg key is Unknown");
break;
}
regkey.Close();
}
else
{
m_log.paragraph("Invalid Reisitry path: " + m_reg);
}
if (value != null)
{
m_val += value;
}
}
if (m_env != null)
{ // try the process then the user then the machine environment variables.
string value = Environment.GetEnvironmentVariable(m_env, EnvironmentVariableTarget.Process);
if (value == null)
{
value = Environment.GetEnvironmentVariable(m_env, EnvironmentVariableTarget.User);
}
if (value == null)
{
value = Environment.GetEnvironmentVariable(m_env, EnvironmentVariableTarget.Machine);
}
if (value != null)
{
m_val += value;
}
}
if (m_set != null)
{
m_val += Utilities.evalExpr(m_set);
}
if (m_add != null)
{ // add the old and new
string newVal = Utilities.evalExpr(m_add);
if (Utilities.IsNumber(newVal) && Utilities.IsNumber(m_val))
{
try
{
double old = double.Parse(m_val);
double add = double.Parse(newVal);
double sum = old + add;
m_log.paragraph("Variable(" + m_id + ") = " + old + " + " + add + " = " + sum);
m_val = System.Convert.ToString(sum);
}
catch
{
fail("Variable(" + m_id + ") = " + m_val + " + " + m_add + " does not compute!");
}
}
else
{
m_log.paragraph("Text add: Variable(" + m_id + ") = " + m_val + " + " + newVal);
m_val += newVal; // append as strings
}
}
else
// even if there was a previous var, but m_add was null,
// then m_val is null if nothing was m_set!
if (m_set == null)
{
m_val = null;
}
if (m_file_exists != null && m_val != null)
{ // append the file name to the reg and/or env value.
if (File.Exists(m_val))
{
m_val = m_file_exists;
}
else
{
m_val = "#not-exists#";
}
}
ts.AddNamedInstruction(m_id, this);
}
m_bound = true;
base.Execute();
Finished = true; // tell do-once it's done
}