Merge pull request #2 from opentoys/f-20240201-chinese

add new module

chinese/idcard/area_test.go

@@ -0,0 +1,39 @@
+package idcard
+
+import (
+	"testing"
+)
+
+func TestRegisterCode(t *testing.T) {
+	type args struct {
+		data map[string]string
+	}
+	tests := []struct {
+		name string
+		args args
+	}{
+		// TODO: Add test cases.
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			RegisterCode(tt.args.data)
+		})
+	}
+}
+
+func TestConcatCode(t *testing.T) {
+	type args struct {
+		data map[string]string
+	}
+	tests := []struct {
+		name string
+		args args
+	}{
+		// TODO: Add test cases.
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			ConcatCode(tt.args.data)
+		})
+	}
+}

chinese/idcard/idcard.go

@@ -1,7 +1,6 @@
 package idcard
 
 import (
-	_ "embed"
 	"fmt"
 	"math/rand"
 	"strconv"

chinese/idcard/idcard_test.go

@@ -1,14 +1,14 @@
-package idcard
-
-import (
-	"fmt"
-	"testing"
-)
-
-func TestCheck(t *testing.T) {
-	for i := 0; i < 100; i++ {
-		var no = Generate(true)
-		var id = IdCard(no)
-		fmt.Println(id, id.Check(), id.Parse(), id.Age())
-	}
-}
+package idcard
+
+import (
+	"fmt"
+	"testing"
+)
+
+func TestCheck(t *testing.T) {
+	for i := 0; i < 100; i++ {
+		var no = Generate(true)
+		var id = IdCard(no)
+		fmt.Println(id, id.Check(), id.Parse(), id.Age())
+	}
+}

encoding/base100/base100.go

@@ -0,0 +1,63 @@
+// Fork https://github.com/stek29/base100
+package base100
+
+// Licensed under UNLICENSE
+// See UNLICENSE provided with this file for details
+// For more information, please refer to <http://unlicense.org/>
+
+const (
+	first  = 0xf0
+	second = 0x9f
+
+	shift   = 55
+	divisor = 64
+
+	third = 0x8f
+	forth = 0x80
+)
+
+// Encode tranforms bytes into base100 utf-8 encoded string
+func Encode(data []byte) string {
+	result := make([]byte, len(data)*4)
+	for i, b := range data {
+		result[i*4+0] = first
+		result[i*4+1] = second
+		result[i*4+2] = byte((uint16(b)+shift)/divisor + third)
+		result[i*4+3] = (b+shift)%divisor + forth
+	}
+	return string(result)
+}
+
+// InvalidInputError is returned when Decode fails
+type InvalidInputError struct {
+	message string
+}
+
+func (e InvalidInputError) Error() string {
+	return e.message
+}
+
+// ErrInvalidLength is returned when length of string being decoded is
+// not divisible by four
+var ErrInvalidLength = InvalidInputError{"len(data) should be divisible by 4"}
+
+// ErrInvalidData is returned if data is not a valid base100 string
+var ErrInvalidData = InvalidInputError{"data is invalid"}
+
+// Decode transforms base100 utf-8 encoded string into bytes
+func Decode(data string) ([]byte, error) {
+	if len(data)%4 != 0 {
+		return nil, ErrInvalidLength
+	}
+
+	result := make([]byte, len(data)/4)
+	for i := 0; i != len(data); i += 4 {
+		if data[i+0] != first || data[i+1] != second {
+			return nil, ErrInvalidData
+		}
+
+		result[i/4] = (data[i+2]-third)*divisor +
+			data[i+3] - forth - shift
+	}
+	return result, nil
+}