public override string Dump()
{
StringBuilder sb = new StringBuilder();
for (FormatElement elem = Elements; elem != null; elem = elem.Next)
{
sb.Append(elem.Dump());
}
return(sb.ToString());
}
public override void MarkUncomplited()
{
for (FormatElement elem = Elements; elem != null; elem = elem.Next)
{
if (elem.Type == FormatElementEnum.EXPR)
{
Expr expr = elem.Data.GetValue <Expr>();
expr.MarkUncomplited();
}
}
}
// Replacement for: element_t& operator=(const element_t& elem)
public FormatElement Assign(FormatElement element)
{
if (element != this)
{
IsElementAlignLeft = element.IsElementAlignLeft;
Type = element.Type;
MinWidth = element.MinWidth;
MaxWidth = element.MaxWidth;
Data.SetValue(element.Data);
}
return(this);
}
/// <summary>
/// Ported from format_t::element_t * format_t::parse_elements
/// </summary>
private FormatElement ParseElements(string fmt, Format tmpl = null)
{
FormatElement result = null;
FormatElement current = null;
string q = string.Empty;
InputTextStream inStream = new InputTextStream(fmt);
for (char p = inStream.Peek; !inStream.Eof; inStream.Get(), p = inStream.Peek)
{
if (p != '%' && p != '\\')
{
q += p;
continue;
}
if (result == null)
{
result = new FormatElement();
current = result;
}
else
{
current.Next = new FormatElement();
current = current.Next;
}
if (!String.IsNullOrEmpty(q))
{
current.Type = FormatElementEnum.STRING;
current.Data.SetValue(q);
q = string.Empty;
current.Next = new FormatElement();
current = current.Next;
}
if (p == '\\')
{
inStream.Get(); p = inStream.Peek;
current.Type = FormatElementEnum.STRING;
switch (p)
{
case 'b': current.Data.SetValue("\b"); break;
case 'f': current.Data.SetValue("\f"); break;
case 'n': current.Data.SetValue("\n"); break;
case 'r': current.Data.SetValue("\r"); break;
case 't': current.Data.SetValue("\t"); break;
case 'v': current.Data.SetValue("\v"); break;
case '\\': current.Data.SetValue("\\"); break;
default: current.Data.SetValue(new string(p, 1)); break;
}
continue;
}
inStream.Get(); p = inStream.Peek; // cut '%' or '\\'
while (p == '-')
{
current.IsElementAlignLeft = true;
inStream.Get(); p = inStream.Peek;
}
current.MinWidth = inStream.ReadInt(0, out p);
if (p == '.')
{
current.MaxWidth = inStream.ReadInt(0, out p);
p = inStream.Peek;
if (current.MinWidth == 0)
{
current.MinWidth = current.MaxWidth;
}
}
if (Char.IsLetter(p))
{
string sExpr;
if (SingleLetterMapping.TryGetValue(p, out sExpr))
{
if (sExpr.Contains('$'))
{
sExpr = sExpr.Replace("$min", current.MinWidth > 0 ? current.MinWidth.ToString() : "-1").
Replace("$max", current.MaxWidth > 0 ? current.MaxWidth.ToString() : "-1").
Replace("$left", current.IsElementAlignLeft ? "false" : "true");
if (sExpr.Contains('$'))
{
throw new InvalidOperationException("Unrecognized format substitution keyword");
}
}
current.Type = FormatElementEnum.EXPR;
current.Data.SetValue(new Expr(sExpr));
}
else
{
throw new FormatError(String.Format(FormatError.ErrorMessageUnrecognizedFormattingCharacterSmth, p));
}
}
else
{
switch (p)
{
case '%':
current.Type = FormatElementEnum.STRING;
current.Data.SetValue("%");
break;
case '$':
{
if (tmpl == null)
{
throw new FormatError(FormatError.ErrorMessagePriorFieldReferenceButNoTemplate);
}
inStream.Get(); p = inStream.Peek;
if (p == '0' || (!Char.IsDigit(p) && p != 'A' && p != 'B' && p != 'C' && p != 'D' && p != 'E' && p != 'F'))
{
throw new FormatError(FormatError.ErrorMessageFieldReferenceMustBeADigitFrom1To9);
}
int index = char.IsDigit(p) ? p - '0' : (p - 'A' + 10);
FormatElement tmplElem = tmpl.Elements;
for (int i = 1; i < index && tmplElem != null; i++)
{
tmplElem = tmplElem.Next;
while (tmplElem != null && tmplElem.Type != FormatElementEnum.EXPR)
{
tmplElem = tmplElem.Next;
}
}
if (tmplElem == null)
{
throw new FormatError(FormatError.ErrorMessageReferenceToANonExistentPriorField);
}
current.Assign(tmplElem);
break;
}
case '(':
case '{':
{
bool formatAmount = p == '{';
current.Type = FormatElementEnum.EXPR;
current.Data.SetValue(ParseSingleExpression(inStream));
// Wrap the subexpression in calls to justify and scrub
if (!formatAmount)
{
break;
}
ExprOp op = current.Data.GetValue <Expr>().Op;
#region Create Expressions
ExprOp call2Node = new ExprOp(OpKindEnum.O_CALL);
call2Node.Left = IdentNode("justify");
ExprOp args3Node = new ExprOp(OpKindEnum.O_CONS);
ExprOp call1Node = new ExprOp(OpKindEnum.O_CALL);
call1Node.Left = IdentNode("scrub");
call1Node.Right = op.Kind == OpKindEnum.O_CONS ? op.Left : op;
args3Node.Left = call1Node;
ExprOp args2Node = new ExprOp(OpKindEnum.O_CONS);
ExprOp arg1Node = new ExprOp(OpKindEnum.VALUE);
arg1Node.AsValue = Value.Get(current.MinWidth > 0 ? current.MinWidth : -1);
args2Node.Left = arg1Node;
ExprOp args1Node = new ExprOp(OpKindEnum.O_CONS);
ExprOp arg2Node = new ExprOp(OpKindEnum.VALUE);
arg2Node.AsValue = Value.Get(current.MaxWidth > 0 ? current.MaxWidth : -1);
args1Node.Left = arg2Node;
ExprOp arg3Node = new ExprOp(OpKindEnum.VALUE);
arg3Node.AsValue = Value.Get(!current.IsElementAlignLeft);
args1Node.Right = arg3Node;
args2Node.Right = args1Node;
args3Node.Right = args2Node;
call2Node.Right = args3Node;
#endregion
current.MinWidth = 0;
current.MaxWidth = 0;
string prevExpr = current.Data.GetValue <Expr>().Text;
ExprOp colorizeOp = null;
if (op.Kind == OpKindEnum.O_CONS && op.HasRight)
{
colorizeOp = op.Right;
}
if (colorizeOp != null)
{
ExprOp call3Node = new ExprOp(OpKindEnum.O_CALL);
call3Node.Left = IdentNode("ansify_if");
ExprOp args4Node = new ExprOp(OpKindEnum.O_CONS);
args4Node.Left = call2Node; // from above
args4Node.Right = colorizeOp;
call3Node.Right = args4Node;
current.Data.SetValue(new Expr(call3Node));
}
else
{
current.Data.SetValue(new Expr(call2Node));
}
current.Data.GetValue <Expr>().Text = prevExpr;
break;
}
default:
throw new FormatError(String.Format(FormatError.ErrorMessageUnrecognizedFormattingCharacterSmth, p));
}
}
}
if (!string.IsNullOrEmpty(q))
{
if (result == null)
{
result = new FormatElement();
current = result;
}
else
{
current.Next = new FormatElement();
current = current.Next;
}
current.Type = FormatElementEnum.STRING;
current.Data.SetValue(q);
}
return(result);
}
protected override string RealCalc(Scope scope)
{
StringBuilder outStr = new StringBuilder();
for (FormatElement elem = Elements; elem != null; elem = elem.Next)
{
string s;
switch (elem.Type)
{
case FormatElementEnum.STRING:
string stringFormat = StringExtensions.GetWidthAlignFormatString(elem.MinWidth, !elem.IsElementAlignLeft);
s = String.Format(stringFormat, elem.Data.GetValue <string>());
break;
case FormatElementEnum.EXPR:
Expr expr = new Expr(elem.Data.GetValue <Expr>());
try
{
expr.Compile(scope);
Value value;
if (expr.IsFunction)
{
CallScope args = new CallScope(scope);
args.PushBack(Value.Get(elem.MaxWidth));
value = expr.GetFunction()(args);
}
else
{
value = expr.Calc(scope);
}
Logger.Current.Debug("format.expr", () => String.Format("value = ({0})", value));
if (elem.MinWidth > 0)
{
s = value.Print(elem.MinWidth, -1, elem.IsElementAlignLeft ? AmountPrintEnum.AMOUNT_PRINT_NO_FLAGS : AmountPrintEnum.AMOUNT_PRINT_RIGHT_JUSTIFY);
}
else
{
s = value.ToString();
}
}
catch
{
string currentContext = ErrorContext.Current.GetContext();
ErrorContext.Current.AddErrorContext("While calculating format expression:");
ErrorContext.Current.AddErrorContext(expr.ContextToStr());
if (!String.IsNullOrEmpty(currentContext))
{
ErrorContext.Current.AddErrorContext(currentContext);
}
throw;
}
break;
default:
throw new InvalidOperationException("Unknown enum item");
}
if (elem.MaxWidth > 0 || elem.MinWidth > 0)
{
string result;
if (elem.MaxWidth > 0 && elem.MaxWidth < s.Length)
{
result = Truncate(s, elem.MaxWidth);
}
else
{
result = s;
if (elem.MinWidth > s.Length)
{
result = result + new String(' ', s.Length - elem.MinWidth);
}
}
outStr.Append(result);
}
else
{
outStr.Append(s);
}
}
return(outStr.ToString());
}