utilies

A handful of (useful) scripts for unix-like systems
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hangrep.go (425B)

      1 // From standard input, filter out single chinese characters to standard output.
      2 
      3 package main
      4 
      5 import (
      6 	"bufio"
      7 	"fmt"
      8 	"os"
      9 	"unicode"
     10 )
     11 
     12 func main() {
     13 	scanner := bufio.NewScanner(os.Stdin)
     14 	for scanner.Scan() {
     15 		text := scanner.Text()
     16 		runes := []rune(text)
     17 		if len(runes) != 1 {
     18 			continue
     19 		}
     20 		if isHanzi(runes[0]) {
     21 			fmt.Println(text)
     22 		}
     23 	}
     24 }
     25 
     26 func isHanzi(r rune) bool {
     27 	return unicode.Is(unicode.Han, r)
     28 }