added markdown table support for go port

main.go

@@ -252,26 +252,158 @@ func renderMDLine(line string, st *mdState) string {
     return indent + c(m[1]+" ", 33) + renderInline(m[2])
   }
   if strings.HasPrefix(trimmed, "|") && strings.HasSuffix(trimmed, "|") {
-    isSep := true
+    return renderInline(line)
-    for _, ch := range strings.ReplaceAll(strings.ReplaceAll(trimmed, "|", ""), ":", "") {
-      if ch != '-' && ch != ' ' { isSep = false; break }
-    }
-    if isSep { return c(trimmed, 2) }
-    cells := strings.Split(trimmed[1:len(trimmed)-1], "|")
-    var rcells []string
-    for _, cell := range cells { rcells = append(rcells, " "+renderInline(strings.TrimSpace(cell))+" ") }
-    return c("│", 2) + strings.Join(rcells, c("│", 2)) + c("│", 2)
   }
   return renderInline(line)
 }
 
+func isTableSep(cells []string) bool {
+  if len(cells) == 0 { return false }
+  for _, cell := range cells {
+    c := strings.ReplaceAll(strings.ReplaceAll(strings.TrimSpace(cell), "-", ""), ":", "")
+    if c != "" { return false }
+  }
+  return true
+}
+
+func parseTableCells(line string) []string {
+  trimmed := strings.TrimSpace(line)
+  if strings.HasPrefix(trimmed, "|") { trimmed = trimmed[1:] }
+  if strings.HasSuffix(trimmed, "|") { trimmed = trimmed[:len(trimmed)-1] }
+  parts := strings.Split(trimmed, "|")
+  cells := make([]string, len(parts))
+  for i, p := range parts { cells[i] = strings.TrimSpace(p) }
+  return cells
+}
+
+func isTableLine(line string) bool {
+  trimmed := strings.TrimSpace(line)
+  if !strings.Contains(trimmed, "|") { return false }
+  return strings.HasPrefix(trimmed, "|") || strings.HasSuffix(trimmed, "|")
+}
+
+func renderTable(lines []string) []string {
+  if len(lines) == 0 { return nil }
+  var rows [][]string
+  var headerRow []string
+  hasHeader := false
+
+  for _, ln := range lines {
+    cells := parseTableCells(ln)
+    if isTableSep(cells) {
+      if len(rows) > 0 && !hasHeader {
+        headerRow = rows[len(rows)-1]
+        rows = rows[:len(rows)-1]
+        hasHeader = true
+      }
+      continue
+    }
+    rows = append(rows, cells)
+  }
+
+  if !hasHeader && len(lines) < 2 {
+    var out []string
+    var st mdState
+    for _, ln := range lines { out = append(out, renderMDLine(ln, &st)) }
+    return out
+  }
+
+  numCols := len(headerRow)
+  for _, r := range rows {
+    if len(r) > numCols { numCols = len(r) }
+  }
+  if numCols == 0 { return nil }
+
+  if hasHeader {
+    for len(headerRow) < numCols { headerRow = append(headerRow, "") }
+  }
+  for i := range rows {
+    for len(rows[i]) < numCols { rows[i] = append(rows[i], "") }
+  }
+
+  colWidths := make([]int, numCols)
+  for i := 0; i < numCols; i++ {
+    if hasHeader {
+      vl := visibleLen(headerRow[i])
+      if vl > colWidths[i] { colWidths[i] = vl }
+    }
+    for _, r := range rows {
+      vl := visibleLen(renderInline(r[i]))
+      if vl > colWidths[i] { colWidths[i] = vl }
+    }
+    if colWidths[i] < 3 { colWidths[i] = 3 }
+  }
+
+  var res []string
+
+  var topParts []string
+  for _, w := range colWidths { topParts = append(topParts, strings.Repeat("─", w+2)) }
+  res = append(res, c("┌"+strings.Join(topParts, "┬")+"┐", 2))
+
+  if hasHeader {
+    var hCells []string
+    for i, h := range headerRow {
+      rh := c(h, 1, 36)
+      pad := strings.Repeat(" ", colWidths[i]-visibleLen(h))
+      hCells = append(hCells, " "+rh+pad+" ")
+    }
+    res = append(res, c("│", 2)+strings.Join(hCells, c("│", 2))+c("│", 2))
+
+    var midParts []string
+    for _, w := range colWidths { midParts = append(midParts, strings.Repeat("─", w+2)) }
+    res = append(res, c("├"+strings.Join(midParts, "┼")+"┤", 2))
+  }
+
+  for _, r := range rows {
+    var rCells []string
+    for i, cell := range r {
+      rc := renderInline(cell)
+      pad := strings.Repeat(" ", colWidths[i]-visibleLen(rc))
+      rCells = append(rCells, " "+rc+pad+" ")
+    }
+    res = append(res, c("│", 2)+strings.Join(rCells, c("│", 2))+c("│", 2))
+  }
+
+  var botParts []string
+  for _, w := range colWidths { botParts = append(botParts, strings.Repeat("─", w+2)) }
+  res = append(res, c("└"+strings.Join(botParts, "┴")+"┘", 2))
+
+  return res
+}
+
 func renderMD(text string) string {
+  if !COL { return text }
   lines := strings.Split(text, "\n")
   var out []string
   var st mdState
+  var tbl []string
+
+  flushTable := func() {
+    if len(tbl) > 0 {
+      out = append(out, renderTable(tbl)...)
+      tbl = nil
+    }
+  }
+
   for _, ln := range lines {
+    trimmed := strings.TrimSpace(ln)
+    if strings.HasPrefix(trimmed, "```") {
+      flushTable()
+      out = append(out, renderMDLine(ln, &st))
+      continue
+    }
+    if st.inCode {
+      out = append(out, renderMDLine(ln, &st))
+      continue
+    }
+    if isTableLine(ln) {
+      tbl = append(tbl, ln)
+      continue
+    }
+    flushTable()
     out = append(out, renderMDLine(ln, &st))
   }
+  flushTable()
   return strings.Join(out, "\n")
 }
 
@@ -420,8 +552,17 @@ func parseStream(r io.Reader) (Message, error) {
   var rh, ch bool
   var lineBuf string
   var mdSt mdState
+  var tblBuf []string
   tcs := map[int]*ToolCall{}
   var order []int
+
+  flushTable := func() {
+    if len(tblBuf) > 0 {
+      for _, tln := range renderTable(tblBuf) { fmt.Println(tln) }
+      tblBuf = nil
+    }
+  }
+
   sc := bufio.NewScanner(r)
   sc.Buffer(make([]byte, 0, 64*1024), 4*1024*1024)
   for sc.Scan() {
@@ -449,7 +590,18 @@ func parseStream(r io.Reader) (Message, error) {
         if idx == -1 { break }
         curLine := lineBuf[:idx]
         lineBuf = lineBuf[idx+1:]
-        fmt.Println(renderMDLine(curLine, &mdSt))
+        trimmed := strings.TrimSpace(curLine)
+        if strings.HasPrefix(trimmed, "```") {
+          flushTable()
+          fmt.Println(renderMDLine(curLine, &mdSt))
+        } else if mdSt.inCode {
+          fmt.Println(renderMDLine(curLine, &mdSt))
+        } else if isTableLine(curLine) {
+          tblBuf = append(tblBuf, curLine)
+        } else {
+          flushTable()
+          fmt.Println(renderMDLine(curLine, &mdSt))
+        }
       }
     }
     for _, tc := range dl.ToolCalls {
@@ -464,8 +616,14 @@ func parseStream(r io.Reader) (Message, error) {
       if tc.Function.Arguments != "" { t.Function.Arguments += tc.Function.Arguments }
     }
   }
+  flushTable()
   if lineBuf != "" {
-    fmt.Println(renderMDLine(lineBuf, &mdSt))
+    if !mdSt.inCode && isTableLine(lineBuf) {
+      tblBuf = append(tblBuf, lineBuf)
+      flushTable()
+    } else {
+      fmt.Println(renderMDLine(lineBuf, &mdSt))
+    }
   }
   if rh && !ch {
     fmt.Print("\n" + c("--- reasoning end ---", 36) + "\n")

main_test.go

@@ -1482,6 +1482,43 @@ func TestRenderMDBlocks(t *testing.T) {
   }
 }
 
+func TestRenderTableFormatting(t *testing.T) {
+  COL = true
+  defer func() { COL = false }()
+
+  raw := strings.Join([]string{
+    "| Name | Role | Location |",
+    "| :--- | :---: | ---: |",
+    "| Alice | `Lead` | New York |",
+    "| Bob | Developer | London |",
+  }, "\n")
+
+  rendered := renderMD(raw)
+  lines := strings.Split(rendered, "\n")
+  if len(lines) != 6 {
+    t.Fatalf("expected 6 table lines (top, header, mid, row1, row2, bot), got %d:\n%s", len(lines), rendered)
+  }
+
+  if !strings.HasPrefix(lines[0], "\033[2m┌") || !strings.HasSuffix(lines[0], "┐\033[0m") {
+    t.Errorf("top border = %q", lines[0])
+  }
+  if !strings.Contains(lines[1], "Name") || !strings.Contains(lines[1], "Role") || !strings.Contains(lines[1], "Location") {
+    t.Errorf("header row = %q", lines[1])
+  }
+  if !strings.HasPrefix(lines[2], "\033[2m├") || !strings.HasSuffix(lines[2], "┤\033[0m") {
+    t.Errorf("mid border = %q", lines[2])
+  }
+  if !strings.Contains(lines[3], "Alice") || !strings.Contains(lines[3], "New York") {
+    t.Errorf("row 1 = %q", lines[3])
+  }
+  if !strings.Contains(lines[4], "Bob") || !strings.Contains(lines[4], "London") {
+    t.Errorf("row 2 = %q", lines[4])
+  }
+  if !strings.HasPrefix(lines[5], "\033[2m└") || !strings.HasSuffix(lines[5], "┘\033[0m") {
+    t.Errorf("bot border = %q", lines[5])
+  }
+}
+
 func TestRenderMDNoColorFallback(t *testing.T) {
   COL = false
   raw := "# Heading\n**bold** and `code`\n- list item"
@@ -1492,3 +1529,4 @@ func TestRenderMDNoColorFallback(t *testing.T) {
 }
 
 
+