Support hyperlinks (OSC 8) in the main window

Close #2557

Author: junegunn

CHANGELOG.md

@@ -17,6 +17,12 @@ CHANGELOG
     # ...
   '
   ```
+- Hyperlinks (OSC 8) are now supported in the preview window and in the main window
+  ```sh
+  printf '<< \e]8;;http://github.com/junegunn/fzf\e\\Link to \e[32mfz\e[0mf\e]8;;\e\\ >>' | fzf --ansi
+
+  fzf --preview "printf '<< \e]8;;http://github.com/junegunn/fzf\e\\Link to \e[32mfz\e[0mf\e]8;;\e\\ >>'"
+  ```
 - Fixed `--tmux bottom` when the status line is not at the bottom
 - Fixed extra scroll offset in multi-line mode (`--read0` or `--wrap`)
 - Added fallback `ps` command for `kill` completion on Cygwin

src/result.go

@@ -16,6 +16,7 @@ type colorOffset struct {
 	offset [2]int32
 	color  tui.ColorPair
 	match  bool
+	url    *url
 }
 
 type Result struct {
@@ -177,8 +178,11 @@ func (result *Result) colorOffsets(matchOffsets []Offset, theme *tui.ColorTheme,
 		if curr != 0 && idx > start {
 			if curr < 0 {
 				color := colMatch
+				var url *url
 				if curr < -1 && theme.Colored {
-					origColor := ansiToColorPair(itemColors[-curr-2], colMatch)
+					ansi := itemColors[-curr-2]
+					url = ansi.color.url
+					origColor := ansiToColorPair(ansi, colMatch)
 					// hl or hl+ only sets the foreground color, so colMatch is the
 					// combination of either [hl and bg] or [hl+ and bg+].
 					//
@@ -194,13 +198,14 @@ func (result *Result) colorOffsets(matchOffsets []Offset, theme *tui.ColorTheme,
 					}
 				}
 				colors = append(colors, colorOffset{
-					offset: [2]int32{int32(start), int32(idx)}, color: color, match: true})
+					offset: [2]int32{int32(start), int32(idx)}, color: color, match: true, url: url})
 			} else {
 				ansi := itemColors[curr-1]
 				colors = append(colors, colorOffset{
 					offset: [2]int32{int32(start), int32(idx)},
 					color:  ansiToColorPair(ansi, colBase),
-					match:  false})
+					match:  false,
+					url:    ansi.color.url})
 			}
 		}
 	}

src/terminal.go

@@ -2460,15 +2460,24 @@ func (t *Terminal) printColoredString(window tui.Window, text []rune, offsets []
 	var substr string
 	var prefixWidth int
 	maxOffset := int32(len(text))
+	var url *url
 	for _, offset := range offsets {
 		b := util.Constrain32(offset.offset[0], index, maxOffset)
 		e := util.Constrain32(offset.offset[1], index, maxOffset)
+		if url != nil && offset.url == nil {
+			url = nil
+			window.LinkEnd()
+		}
 
 		substr, prefixWidth = t.processTabs(text[index:b], prefixWidth)
 		window.CPrint(colBase, substr)
 
 		if b < e {
 			substr, prefixWidth = t.processTabs(text[b:e], prefixWidth)
+			if url == nil && offset.url != nil {
+				url = offset.url
+				window.LinkBegin(url.uri, url.params)
+			}
 			window.CPrint(offset.color, substr)
 		}
 
@@ -2477,6 +2486,9 @@ func (t *Terminal) printColoredString(window tui.Window, text []rune, offsets []
 			break
 		}
 	}
+	if url != nil {
+		window.LinkEnd()
+	}
 	if index < maxOffset {
 		substr, _ = t.processTabs(text[index:], prefixWidth)
 		window.CPrint(colBase, substr)

src/tui/light.go

@@ -1030,13 +1030,13 @@ func cleanse(str string) string {
 func (w *LightWindow) CPrint(pair ColorPair, text string) {
 	_, code := w.csiColor(pair.Fg(), pair.Bg(), pair.Attr())
 	w.stderrInternal(cleanse(text), false, code)
-	w.csi("m")
+	w.csi("0m")
 }
 
 func (w *LightWindow) cprint2(fg Color, bg Color, attr Attr, text string) {
 	hasColors, code := w.csiColor(fg, bg, attr)
 	if hasColors {
-		defer w.csi("m")
+		defer w.csi("0m")
 	}
 	w.stderrInternal(cleanse(text), false, code)
 }
@@ -1141,7 +1141,7 @@ func (w *LightWindow) CFill(fg Color, bg Color, attr Attr, text string) FillRetu
 		bg = w.bg
 	}
 	if hasColors, resetCode := w.csiColor(fg, bg, attr); hasColors {
-		defer w.csi("m")
+		defer w.csi("0m")
 		return w.fill(text, resetCode)
 	}
 	return w.fill(text, w.setBg())

src/tui/tcell.go

@@ -604,6 +604,16 @@ func (w *TcellWindow) Print(text string) {
 	w.printString(text, w.normal)
 }
 
+func (w *TcellWindow) withUrl(style tcell.Style) tcell.Style {
+	if w.uri != nil {
+		style = style.Url(*w.uri)
+		if md := regexp.MustCompile(`id=([^:]+)`).FindStringSubmatch(*w.params); len(md) > 1 {
+			style = style.UrlId(md[1])
+		}
+	}
+	return style
+}
+
 func (w *TcellWindow) printString(text string, pair ColorPair) {
 	lx := 0
 	a := pair.Attr()
@@ -618,6 +628,7 @@ func (w *TcellWindow) printString(text string, pair ColorPair) {
 			Blink(a&Attr(tcell.AttrBlink) != 0).
 			Dim(a&Attr(tcell.AttrDim) != 0)
 	}
+	style = w.withUrl(style)
 
 	gr := uniseg.NewGraphemes(text)
 	for gr.Next() {
@@ -668,13 +679,7 @@ func (w *TcellWindow) fillString(text string, pair ColorPair) FillReturn {
 		Underline(a&Attr(tcell.AttrUnderline) != 0).
 		StrikeThrough(a&Attr(tcell.AttrStrikeThrough) != 0).
 		Italic(a&Attr(tcell.AttrItalic) != 0)
-
-	if w.uri != nil {
-		style = style.Url(*w.uri)
-		if md := regexp.MustCompile(`id=([^:]+)`).FindStringSubmatch(*w.params); len(md) > 1 {
-			style = style.UrlId(md[1])
-		}
-	}
+	style = w.withUrl(style)
 
 	gr := uniseg.NewGraphemes(text)
 Loop: