Adds mod functionality but doesnt work for saving and loading

cell.go

@@ -6,6 +6,13 @@ import (
 	"strings"
 )
 
+const (
+	Bold       int = 1
+	Faint      int = 2
+	Italic     int = 3
+	Underline  int = 4
+)
+
 type cell struct {
 	kind       int      // Enum for the type of cell
 	rawVal     string   // A raw string of the value
@@ -16,7 +23,7 @@ type cell struct {
 }
 
 func (c cell) String(width int, selected bool) string {
-	mods := ""
+	mods := c.Mods()
 	if selected {
 		mods += "\033[7m"
 	}
@@ -27,6 +34,34 @@ func (c cell) String(width int, selected bool) string {
 	return fmt.Sprintf(format, mods, width, width, c.mask)
 }
 
+func (c cell) Mods() string {
+	var o strings.Builder
+	for _, mod := range c.mods {
+		o.WriteString(fmt.Sprintf("\033[%dm", mod))
+	}
+	return o.String()
+}
+
+func (c *cell) ToggleMod(mod int) {
+	if mod > 4 || mod < 1 {
+		return
+	}
+	present := false
+	for i, m := range c.mods {
+		if m == mod {
+			if i != len(c.mods)-1 {
+				c.mods[i] = c.mods[len(c.mods)-1]
+			}
+			c.mods = c.mods[:len(c.mods)-1]
+			present = true
+			break
+		}
+	}
+	if !present {
+		c.mods = append(c.mods, mod)
+	}
+}
+
 func (c *cell) Edit(row, col int) {
 	line, err := GetLine(fmt.Sprintf("\033[2KUpdate %c%d: \033[?25h", col+64, row))
 	if err != nil {

main.go

@@ -15,9 +15,6 @@ const (
 	Text
 	Number
 	Expr
-
-	Bold
-	Italic
 )
 
 var wb workbook

sheet.go

@@ -212,6 +212,7 @@ func (s *sheet) ZoomOut() {
 }
 
 func (s *sheet) TrimSheet() {
+	trimmed := false
 	for rowIndex := s.rows-1; rowIndex > 0; rowIndex-- {
 		remove := true
 		for _, cell := range s.cells[rowIndex] {
@@ -225,6 +226,7 @@ func (s *sheet) TrimSheet() {
 		}
 		s.cells = s.cells[:rowIndex]
 		s.rows--
+		trimmed = true
 	}
 	for colIndex := s.cols-1; colIndex > 0; colIndex-- {
 		remove := true
@@ -241,6 +243,12 @@ func (s *sheet) TrimSheet() {
 			s.cells[i] = s.cells[i][:len(s.cells[i])-1]
 		}
 		s.cols--
+		trimmed = true
+	}
+	if trimmed {
+		s.selection = point{1,1}
+		s.rowOff = 0
+		s.colOff = 0
 	}
 }
 

workbook.go

@@ -27,6 +27,10 @@ const (
 	ToBottom      rune = 'G'
 	RowStart      rune = '^'
 	RowEnd        rune = '$'
+	ModBold       rune = 'b'
+	ModFaint      rune = 'f'
+	ModItalic     rune = 'i'
+	ModUnderline  rune = 'u'
 )
 
 type workbook struct {
@@ -88,6 +92,14 @@ func (w *workbook) Run() {
 		case PasteRelative:
 			w.sheets[w.sheet].PasteRelative()
 			w.sheets[w.sheet].Recalculate()
+		case ModBold:
+			w.sheets[w.sheet].cells[w.sheets[w.sheet].selection.row-1][w.sheets[w.sheet].selection.col-1].ToggleMod(Bold)
+		case ModFaint:
+			w.sheets[w.sheet].cells[w.sheets[w.sheet].selection.row-1][w.sheets[w.sheet].selection.col-1].ToggleMod(Faint)
+		case ModItalic:
+			w.sheets[w.sheet].cells[w.sheets[w.sheet].selection.row-1][w.sheets[w.sheet].selection.col-1].ToggleMod(Italic)
+		case ModUnderline:
+			w.sheets[w.sheet].cells[w.sheets[w.sheet].selection.row-1][w.sheets[w.sheet].selection.col-1].ToggleMod(Underline)
 		}
 	}
 }