utilies

commit 61d6be1b5524dd0575abb16bda7e1cdfd230d070
parent 57325add5d63c587344ca10853fe087d3c8b0b26
Author: Taco-C <perian.forod@gmail.com>
Date:   Wed,  1 Jul 2020 22:52:01 +0200

Add hangrep.go

Diffstat:
A
hangrep.go
 | 
28
++++++++++++++++++++++++++++

1 file changed, 28 insertions(+), 0 deletions(-)
diff --git a/hangrep.go b/hangrep.go
@@ -0,0 +1,28 @@
+// From standard input, filter out single chinese characters to standard output.
+
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+	"unicode"
+)
+
+func main() {
+	scanner := bufio.NewScanner(os.Stdin)
+	for scanner.Scan() {
+		text := scanner.Text()
+		runes := []rune(text)
+		if len(runes) != 1 {
+			continue
+		}
+		if isHanzi(runes[0]) {
+			fmt.Println(text)
+		}
+	}
+}
+
+func isHanzi(r rune) bool {
+	return unicode.Is(unicode.Han, r)
+}