private static bool ParseHeaderString(Inline inline, out TableColumnAlign?align)
{
align = 0;
var literal = inline as LiteralInline;
if (literal == null)
{
return(false);
}
// Work on a copy of the slice
var line = literal.Content;
if (TableHelper.ParseColumnHeader(ref line, '-', out align))
{
if (line.CurrentChar != '\0')
{
return(false);
}
return(true);
}
return(false);
}
public override BlockState TryOpen(BlockProcessor processor)
{
// A grid table cannot start more than an indent
if (processor.IsCodeIndent)
{
return(BlockState.None);
}
var line = processor.Line;
GridTableState tableState = null;
// Match the first row that should be of the minimal form: +---------------
var c = line.CurrentChar;
var lineStart = line.Start;
while (c == '+')
{
var columnStart = line.Start;
line.NextChar();
line.TrimStart();
// if we have reached the end of the line, exit
c = line.CurrentChar;
if (c == 0)
{
break;
}
// Parse a column alignment
TableColumnAlign?columnAlign;
if (!TableHelper.ParseColumnHeader(ref line, '-', out columnAlign))
{
return(BlockState.None);
}
tableState = tableState ?? new GridTableState {
Start = processor.Start, ExpectRow = true
};
tableState.AddColumn(columnStart - lineStart, line.Start - lineStart, columnAlign);
c = line.CurrentChar;
}
if (c != 0 || tableState == null)
{
return(BlockState.None);
}
// Store the line (if we need later to build a ParagraphBlock because the GridTable was in fact invalid)
tableState.AddLine(ref processor.Line);
var table = new Table(this);
table.SetData(typeof(GridTableState), tableState);
// Calculate the total width of all columns
int totalWidth = 0;
foreach (var columnSlice in tableState.ColumnSlices)
{
totalWidth += columnSlice.End - columnSlice.Start - 1;
}
// Store the column width and alignment
foreach (var columnSlice in tableState.ColumnSlices)
{
var columnDefinition = new TableColumnDefinition
{
// Column width proportional to the total width
Width = (float)(columnSlice.End - columnSlice.Start - 1) * 100.0f / totalWidth,
Alignment = columnSlice.Align
};
table.ColumnDefinitions.Add(columnDefinition);
}
processor.NewBlocks.Push(table);
return(BlockState.ContinueDiscard);
}