/// <summary>
/// Register a single command
/// </summary>
/// <param name="cmdName"></param>
/// <param name="cmd"></param>
internal void RegisterErrorCommand(string cmdName, CommandOperand cmd)
{
var name = new NameOperand();
name.Value = cmdName;
cmd.Name = $"build-in:{cmdName}"; // this name is for debugging purposes only
ErrorDict.Add(name, cmd);
}
// some convenience methods to increase readability of the using code
/// <summary>
/// Find a key and return its value
/// Throw an exception if the key is not found
/// </summary>
public Operand Find(string key)
{
var keyOp = new NameOperand {
Value = key
};
return(Find(keyOp));
}
public override void Execute(EpsInterpreter interpreter)
{
if (!IsExecutable)
{
interpreter.OperandStack.Push(Copy());
}
else
{
var name = new NameOperand(this.Value);
var op = DictionaryStackHelper.FindValue(interpreter.DictionaryStack, name);
if (op != null)
{
interpreter.Execute(op);
}
}
}
/// <summary>
/// Prepare dictionaries
/// </summary>
private void PrepareStandardDictionaries(int postscriptVersion)
{
ResourceManager = new ResourceManager();
ResourceManager.DefineResource("Category", new NameOperand("Generic"), new DictionaryOperand());
DictionaryStack = new EpsStack <EpsDictionary>();
SystemDict = new EpsDictionary {
IsPermanent = true
};
GlobalDict = new EpsDictionary {
IsPermanent = true
};
UserDict = new EpsDictionary {
IsPermanent = true
};
ErrorDict = new EpsDictionary {
IsPermanent = true
};
DollarErrordict = new EpsDictionary {
IsPermanent = true
};
statusDict = new EpsDictionary {
IsPermanent = true
};
fontDict = new EpsDictionary {
IsPermanent = true
};
DictionaryStack.Push(SystemDict);
DictionaryStack.Push(GlobalDict);
DictionaryStack.Push(UserDict);
var systemDict = SystemDict;
var name = new NameOperand("systemdict");
Operand operand = new DictionaryOperand(SystemDict);
systemDict.Add(name, operand);
name = new NameOperand("userdict");
operand = new DictionaryOperand(UserDict);
systemDict.Add(name, operand);
name = new NameOperand("globaldict");
operand = new DictionaryOperand(GlobalDict);
systemDict.Add(name, operand);
name = new NameOperand("statusdict");
operand = new DictionaryOperand(statusDict);
systemDict.Add(name, operand);
name = new NameOperand("errordict");
operand = new DictionaryOperand(ErrorDict);
systemDict.Add(name, operand);
name = new NameOperand("$error");
operand = new DictionaryOperand(DollarErrordict);
systemDict.Add(name, operand);
name = new NameOperand("GlobalFontDirectory");
operand = new DictionaryOperand(fontDict);
systemDict.Add(name, operand);
name = new NameOperand("SharedFontDirectory");
operand = new DictionaryOperand(fontDict);
systemDict.Add(name, operand);
name = new NameOperand("true");
operand = new BooleanOperand(true);
systemDict.Add(name, operand);
name = new NameOperand("false");
operand = new BooleanOperand(false);
systemDict.Add(name, operand);
name = new NameOperand("null");
operand = new NullOperand();
systemDict.Add(name, operand);
// for level 1 do not create this name, some adobe scripts
// assume level 2 or higher just based on the existence of the name
if (postscriptVersion >= 2)
{
name = new NameOperand("languagelevel");
operand = new IntegerOperand(postscriptVersion);
systemDict.Add(name, operand);
}
name = new NameOperand("newerror");
var b = new BooleanOperand(false);
DollarErrordict.Add(name, b);
}