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Diffstat (limited to 'ui')
-rw-r--r--ui/commands.go31
-rw-r--r--ui/rainbow.go110
-rw-r--r--ui/room-view.go6
3 files changed, 135 insertions, 12 deletions
diff --git a/ui/commands.go b/ui/commands.go
index 3d12eff..8cfe55d 100644
--- a/ui/commands.go
+++ b/ui/commands.go
@@ -22,6 +22,7 @@ import (
"io"
"math"
"os"
+ "regexp"
"runtime"
dbg "runtime/debug"
"runtime/pprof"
@@ -29,11 +30,12 @@ import (
"strconv"
"strings"
"time"
- "unicode"
"github.com/lucasb-eyer/go-colorful"
+ "github.com/russross/blackfriday/v2"
"maunium.net/go/mautrix"
+ "maunium.net/go/mautrix/format"
"maunium.net/go/gomuks/debug"
)
@@ -79,16 +81,23 @@ var rainbow = GradientTable{
// TODO this command definitely belongs in a plugin once we have a plugin system.
func makeRainbow(cmd *Command, msgtype mautrix.MessageType) {
text := strings.Join(cmd.Args, " ")
- var html strings.Builder
- for i, char := range text {
- if unicode.IsSpace(char) {
- html.WriteRune(char)
- continue
- }
- color := rainbow.GetInterpolatedColorFor(float64(i) / float64(len(text))).Hex()
- _, _ = fmt.Fprintf(&html, "<font data-mx-color=\"%[1]s\" color=\"%[1]s\">%[2]c</font>", color, char)
- }
- go cmd.Room.SendMessage(msgtype, html.String())
+
+ render := NewRainbowRenderer(blackfriday.NewHTMLRenderer(blackfriday.HTMLRendererParameters{
+ Flags: blackfriday.UseXHTML,
+ }))
+ htmlBodyBytes := blackfriday.Run([]byte(text), format.Extensions, blackfriday.WithRenderer(render))
+ htmlBody := strings.TrimRight(string(htmlBodyBytes), "\n")
+ htmlBody = format.AntiParagraphRegex.ReplaceAllString(htmlBody, "$1")
+ text = format.HTMLToText(htmlBody)
+
+ count := strings.Count(htmlBody, render.ColorID)
+ i := -1
+ htmlBody = regexp.MustCompile(render.ColorID).ReplaceAllStringFunc(htmlBody, func(match string) string {
+ i++
+ return rainbow.GetInterpolatedColorFor(float64(i) / float64(count)).Hex()
+ })
+
+ go cmd.Room.SendMessageHTML(msgtype, text, htmlBody)
}
func cmdRainbow(cmd *Command) {
diff --git a/ui/rainbow.go b/ui/rainbow.go
new file mode 100644
index 0000000..8a564be
--- /dev/null
+++ b/ui/rainbow.go
@@ -0,0 +1,110 @@
+// gomuks - A terminal Matrix client written in Go.
+// Copyright (C) 2020 Tulir Asokan
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+package ui
+
+import (
+ "bytes"
+ "fmt"
+ "html"
+ "io"
+ "math/rand"
+ "unicode"
+
+ "github.com/rivo/uniseg"
+ "github.com/russross/blackfriday/v2"
+)
+
+type RainbowRenderer struct {
+ *blackfriday.HTMLRenderer
+ sr *blackfriday.SPRenderer
+
+ ColorID string
+}
+
+func Rand(n int) (str string) {
+ b := make([]byte, n)
+ rand.Read(b)
+ str = fmt.Sprintf("%x", b)
+ return
+}
+
+func NewRainbowRenderer(html *blackfriday.HTMLRenderer) *RainbowRenderer {
+ return &RainbowRenderer{
+ HTMLRenderer: html,
+ sr: blackfriday.NewSmartypantsRenderer(html.Flags),
+ ColorID: Rand(16),
+ }
+}
+
+func (r *RainbowRenderer) RenderNode(w io.Writer, node *blackfriday.Node, entering bool) blackfriday.WalkStatus {
+ if node.Type == blackfriday.Text {
+ var buf bytes.Buffer
+ if r.Flags&blackfriday.Smartypants != 0 {
+ var tmp bytes.Buffer
+ escapeHTML(&tmp, node.Literal)
+ r.sr.Process(&buf, tmp.Bytes())
+ } else {
+ if node.Parent.Type == blackfriday.Link {
+ escLink(&buf, node.Literal)
+ } else {
+ escapeHTML(&buf, node.Literal)
+ }
+ }
+ graphemes := uniseg.NewGraphemes(buf.String())
+ buf.Reset()
+ for graphemes.Next() {
+ runes := graphemes.Runes()
+ if len(runes) == 1 && unicode.IsSpace(runes[0]) {
+ buf.WriteRune(runes[0])
+ continue
+ }
+ _, _ = fmt.Fprintf(&buf, "<font color=\"%s\">%s</font>", r.ColorID, graphemes.Str())
+ }
+ _, _ = w.Write(buf.Bytes())
+ return blackfriday.GoToNext
+ }
+ return r.HTMLRenderer.RenderNode(w, node, entering)
+}
+
+// This stuff is copied directly from blackfriday
+var htmlEscaper = [256][]byte{
+ '&': []byte("&amp;"),
+ '<': []byte("&lt;"),
+ '>': []byte("&gt;"),
+ '"': []byte("&quot;"),
+}
+
+func escapeHTML(w io.Writer, s []byte) {
+ var start, end int
+ for end < len(s) {
+ escSeq := htmlEscaper[s[end]]
+ if escSeq != nil {
+ w.Write(s[start:end])
+ w.Write(escSeq)
+ start = end + 1
+ }
+ end++
+ }
+ if start < len(s) && end <= len(s) {
+ w.Write(s[start:end])
+ }
+}
+
+func escLink(w io.Writer, text []byte) {
+ unesc := html.UnescapeString(string(text))
+ escapeHTML(w, []byte(unesc))
+}
diff --git a/ui/room-view.go b/ui/room-view.go
index 3c4be8f..ef19c9d 100644
--- a/ui/room-view.go
+++ b/ui/room-view.go
@@ -622,6 +622,10 @@ func (view *RoomView) SendReaction(eventID string, reaction string) {
}
func (view *RoomView) SendMessage(msgtype mautrix.MessageType, text string) {
+ view.SendMessageHTML(msgtype, text, "")
+}
+
+func (view *RoomView) SendMessageHTML(msgtype mautrix.MessageType, text, html string) {
defer debug.Recover()
debug.Print("Sending message", msgtype, text, "to", view.Room.ID)
if !view.config.Preferences.DisableEmojis {
@@ -639,7 +643,7 @@ func (view *RoomView) SendMessage(msgtype mautrix.MessageType, text string) {
Event: view.replying,
}
}
- evt := view.parent.matrix.PrepareMarkdownMessage(view.Room.ID, msgtype, text, rel)
+ evt := view.parent.matrix.PrepareMarkdownMessage(view.Room.ID, msgtype, text, html, rel)
msg := view.parseEvent(evt.SomewhatDangerousCopy())
view.content.AddMessage(msg, AppendMessage)
view.ClearAllContext()