commit 2313198

/topic completion

 1@@ -455,36 +455,10 @@ func (app *App) completions(cursorIdx int, text []rune) []ui.Completion {
 2 		return cs
 3 	}
 4 
 5-	var start int
 6-	for start = cursorIdx - 1; 0 <= start; start-- {
 7-		if text[start] == ' ' {
 8-			break
 9-		}
10-	}
11-	start++
12-	word := text[start:cursorIdx]
13-	if len(word) == 0 {
14-		return cs
15-	}
16-	wordCf := app.s.Casemap(string(word))
17-	for _, name := range app.s.Names(app.win.CurrentBuffer()) {
18-		if strings.HasPrefix(app.s.Casemap(name.Name.Name), wordCf) {
19-			nickComp := []rune(name.Name.Name)
20-			if start == 0 {
21-				nickComp = append(nickComp, ':')
22-			}
23-			nickComp = append(nickComp, ' ')
24-			c := make([]rune, len(text)+len(nickComp)-len(word))
25-			copy(c[:start], text[:start])
26-			if cursorIdx < len(text) {
27-				copy(c[start+len(nickComp):], text[cursorIdx:])
28-			}
29-			copy(c[start:], nickComp)
30-			cs = append(cs, ui.Completion{
31-				Text:      c,
32-				CursorIdx: start + len(nickComp),
33-			})
34-		}
35+	buffer := app.win.CurrentBuffer()
36+	if app.s.IsChannel(buffer) {
37+		cs = app.completionsChannelTopic(cs, cursorIdx, text)
38+		cs = app.completionsChannelMembers(cs, cursorIdx, text)
39 	}
40 
41 	if cs != nil {

 1@@ -0,0 +1,73 @@
 2+package senpai
 3+
 4+import (
 5+	"strings"
 6+
 7+	"git.sr.ht/~taiite/senpai/ui"
 8+)
 9+
10+func (app *App) completionsChannelMembers(cs []ui.Completion, cursorIdx int, text []rune) []ui.Completion {
11+	var start int
12+	for start = cursorIdx - 1; 0 <= start; start-- {
13+		if text[start] == ' ' {
14+			break
15+		}
16+	}
17+	start++
18+	word := text[start:cursorIdx]
19+	if len(word) == 0 {
20+		return cs
21+	}
22+	wordCf := app.s.Casemap(string(word))
23+	for _, name := range app.s.Names(app.win.CurrentBuffer()) {
24+		if strings.HasPrefix(app.s.Casemap(name.Name.Name), wordCf) {
25+			nickComp := []rune(name.Name.Name)
26+			if start == 0 {
27+				nickComp = append(nickComp, ':')
28+			}
29+			nickComp = append(nickComp, ' ')
30+			c := make([]rune, len(text)+len(nickComp)-len(word))
31+			copy(c[:start], text[:start])
32+			if cursorIdx < len(text) {
33+				copy(c[start+len(nickComp):], text[cursorIdx:])
34+			}
35+			copy(c[start:], nickComp)
36+			cs = append(cs, ui.Completion{
37+				Text:      c,
38+				CursorIdx: start + len(nickComp),
39+			})
40+		}
41+	}
42+	return cs
43+}
44+
45+func (app *App) completionsChannelTopic(cs []ui.Completion, cursorIdx int, text []rune) []ui.Completion {
46+	if !hasPrefix(text, []rune("/topic ")) {
47+		return cs
48+	}
49+	topic, _, _ := app.s.Topic(app.win.CurrentBuffer())
50+	if cursorIdx == len(text) {
51+		compText := append(text, []rune(topic)...)
52+		cs = append(cs, ui.Completion{
53+			Text:      compText,
54+			CursorIdx: len(compText),
55+		})
56+	}
57+	return cs
58+}
59+
60+func hasPrefix(s, prefix []rune) bool {
61+	return len(prefix) <= len(s) && equal(prefix, s[:len(prefix)])
62+}
63+
64+func equal(a, b []rune) bool {
65+	if len(a) != len(b) {
66+		return false
67+	}
68+	for i := 0; i < len(a); i++ {
69+		if a[i] != b[i] {
70+			return false
71+		}
72+	}
73+	return true
74+}