Add an example script for generating Chinese character flashcards

examples/gen.go

@@ -0,0 +1,60 @@
+package main
+
+import (
+	"bufio"
+	"database/sql"
+	"flag"
+	"fmt"
+	"math/bits"
+	"os"
+	"strings"
+
+	_ "modernc.org/sqlite"
+)
+
+/*
+https://en.wiktionary.org/wiki/Appendix:Mandarin_Frequency_lists/1-1000
+https://lingua.mtsu.edu/chinese-computing/statistics/char/list.php?Which=MO
+https://jslearnchinese.wordpress.com/2018/07/24/the-1000-most-used-characters-in-chinese/
+*/
+
+var verbose = flag.Bool("v", false, "debug output")
+var file = flag.String("f", "cards", "cards file")
+
+func main() {
+	flag.Parse()
+
+	db, err := sql.Open("sqlite", *file)
+	if err != nil {
+		panic(err)
+	}
+
+	// Create table
+	_, err = db.Exec("CREATE TABLE IF NOT EXISTS cards (idx INTEGER PRIMARY KEY, weight INTEGER, key STRING, val STRING)")
+	if err != nil {
+		panic(err)
+	}
+
+	f, err := os.Open("list")
+	if err != nil {
+		panic(err)
+	}
+	defer f.Close()
+
+	scanner := bufio.NewScanner(f)
+	
+	i := 0
+	for scanner.Scan() {
+		line := strings.Split(scanner.Text(), "|")
+		key := line[2]
+		val := line[3] + " " + strings.Split(line[4], " {")[0]
+
+		if *verbose {
+			fmt.Println(key)
+			fmt.Println(val)
+		}
+
+		_, err = db.Exec("INSERT INTO cards VALUES(?, ?, ?, ?)", i, 1<<(bits.LeadingZeros(uint(i))-40), key, val)
+		i++
+	}
+}