refactor(cellbuf): clean up and remove unused

cellbuf/screen.go

@@ -1,12 +1,5 @@
 package cellbuf
 
-import (
-	"bytes"
-	"strings"
-
-	"github.com/charmbracelet/x/ansi"
-)
-
 // Segment represents a continuous segment of cells with the same style
 // attributes and hyperlink.
 type Segment struct {
@@ -27,71 +20,3 @@ func Paint(d Window, content string) []int {
 func PaintRect(d Window, content string, rect Rectangle) []int {
 	return setContent(d, content, WcWidth, rect)
 }
-
-func renderLine(d *Buffer, n int, opt Options) (w int, line string) {
-	var pen Style
-	var link Link
-	var buf bytes.Buffer
-	var pendingLine string
-	var pendingWidth int // this ignores space cells until we hit a non-space cell
-
-	writePending := func() {
-		// If there's no pending line, we don't need to do anything.
-		if len(pendingLine) == 0 {
-			return
-		}
-		buf.WriteString(pendingLine)
-		w += pendingWidth
-		pendingWidth = 0
-		pendingLine = ""
-	}
-
-	for x := 0; x < d.Width(); x++ {
-		if cell := d.Cell(x, n); cell != nil && cell.Width > 0 {
-			// Convert the cell's style and link to the given color profile.
-			cellStyle := ConvertStyle(cell.Style, opt.Profile)
-			cellLink := ConvertLink(cell.Link, opt.Profile)
-			if cellStyle.Empty() && !pen.Empty() {
-				writePending()
-				buf.WriteString(ansi.ResetStyle) //nolint:errcheck
-				pen.Reset()
-			}
-			if !cellStyle.Equal(pen) {
-				writePending()
-				seq := cellStyle.DiffSequence(pen)
-				buf.WriteString(seq) // nolint:errcheck
-				pen = cellStyle
-			}
-
-			// Write the URL escape sequence
-			if cellLink != link && link.URL != "" {
-				writePending()
-				buf.WriteString(ansi.ResetHyperlink()) //nolint:errcheck
-				link.Reset()
-			}
-			if cellLink != link {
-				writePending()
-				buf.WriteString(ansi.SetHyperlink(cellLink.URL, cellLink.URLID)) //nolint:errcheck
-				link = cellLink
-			}
-
-			// We only write the cell content if it's not empty. If it is, we
-			// append it to the pending line and width to be evaluated later.
-			if cell.Equal(&BlankCell) {
-				pendingLine += cell.String()
-				pendingWidth += cell.Width
-			} else {
-				writePending()
-				buf.WriteString(cell.String())
-				w += cell.Width
-			}
-		}
-	}
-	if link.URL != "" {
-		buf.WriteString(ansi.ResetHyperlink()) //nolint:errcheck
-	}
-	if !pen.Empty() {
-		buf.WriteString(ansi.ResetStyle) //nolint:errcheck
-	}
-	return w, strings.TrimRight(buf.String(), " ") // Trim trailing spaces
-}