Table rendering (#40)

Renders markdown tables.

table.go

@@ -0,0 +1,61 @@
+package gold
+
+import (
+	"io"
+
+	"github.com/olekukonko/tablewriter"
+	bf "gopkg.in/russross/blackfriday.v2"
+)
+
+type TableElement struct {
+}
+
+type TableRowElement struct {
+}
+
+type TableHeadElement struct {
+}
+
+type TableCellElement struct {
+}
+
+func (e *TableElement) Render(w io.Writer, node *bf.Node, tr *TermRenderer) error {
+	tr.tableData.table = tablewriter.NewWriter(w)
+	return nil
+}
+
+func (e *TableElement) Finish(w io.Writer, node *bf.Node, tr *TermRenderer) error {
+	tr.tableData.table.Render()
+	tr.tableData = TableData{}
+	return nil
+}
+
+func (e *TableRowElement) Finish(w io.Writer, node *bf.Node, tr *TermRenderer) error {
+	tr.tableData.table.Append(tr.tableData.tableCell)
+	tr.tableData.tableCell = []string{}
+	return nil
+}
+
+func (e *TableHeadElement) Finish(w io.Writer, node *bf.Node, tr *TermRenderer) error {
+	tr.tableData.table.SetHeader(tr.tableData.tableHeader)
+	tr.tableData.tableHeader = []string{}
+	return nil
+}
+
+func (e *TableCellElement) Render(w io.Writer, node *bf.Node, tr *TermRenderer) error {
+	s := ""
+	n := node.FirstChild
+	for n != nil {
+		s += string(n.Literal)
+		s += string(n.LinkData.Destination)
+		n = n.Next
+	}
+
+	if node.Parent.Parent.Type == bf.TableHead {
+		tr.tableData.tableHeader = append(tr.tableData.tableHeader, s)
+	} else {
+		tr.tableData.tableCell = append(tr.tableData.tableCell, s)
+	}
+
+	return nil
+}