feat: add 'BitSet' viewer (#503)

Author: blitmaster

backend/types/view_type.go

@@ -7,6 +7,7 @@ const FORMAT_YAML = "YAML"
 const FORMAT_XML = "XML"
 const FORMAT_HEX = "Hex"
 const FORMAT_BINARY = "Binary"
+const FORMAT_BITSET = "BitSet"
 
 const DECODE_NONE = "None"
 const DECODE_BASE64 = "Base64"

backend/utils/convert/bitset_convert.go

@@ -0,0 +1,101 @@
+package convutil
+
+import (
+	"fmt"
+	"math"
+	"strconv"
+	"strings"
+)
+
+type BitSetConvert struct{}
+
+func (BitSetConvert) Enable() bool {
+	return true
+}
+
+func (BitSetConvert) Encode(str string) (string, bool) {
+	var result strings.Builder
+
+	str = strings.ReplaceAll(str, "\r\n", "\n") // CRLF → LF
+	str = strings.ReplaceAll(str, "\r", "\n")   // CR → LF
+
+	lines := strings.Split(str, "\n")
+	bytes := EncodeToRedisBitset(lines)
+	result.Write(bytes)
+
+	return result.String(), true
+}
+
+// EncodeToRedisBitset encodes a list of strings with integers (positions) into a Redis bitset byte array.
+// The bit at position 'n' will be set to 1 if n is in the input array.
+// The resulting byte slice can be stored in Redis using SET command.
+func EncodeToRedisBitset(numbers []string) []byte {
+	if len(numbers) == 0 {
+		return []byte{}
+	}
+
+	// Find the maximum number to determine the required bit length and convert strings to numbers
+	maxNum := uint64(0)
+	var validNumbers []uint64
+	for _, s := range numbers {
+		if s == "" {
+			continue
+		}
+		num, err := strconv.ParseUint(s, 10, 64)
+		if err != nil || num < 0 || num > math.MaxUint32 {
+			fmt.Printf("Warning: skipping invalid number '%s': %v\n", s, err)
+			continue
+		}
+		validNumbers = append(validNumbers, num)
+		if num > maxNum {
+			maxNum = num
+		}
+	}
+
+	if len(validNumbers) == 0 {
+		return []byte{}
+	}
+
+	// Calculate required byte length (8 bits per byte)
+	byteLen := ((maxNum + 7) / 8) + 1
+
+	// Initialize byte array
+	bitset := make([]byte, byteLen)
+
+	// Set bits for each number
+	for _, num := range validNumbers {
+		byteIndex := num / 8
+		if byteIndex < byteLen {
+			bitIndex := uint(num % 8)
+			// Set the bit (big-endian bit order within byte)
+			bitset[byteIndex] |= 1 << (7 - bitIndex)
+		}
+	}
+
+	return bitset
+}
+
+func (BitSetConvert) Decode(str string) (string, bool) {
+	bitset := getBitSet([]byte(str))
+
+	var binBuilder strings.Builder
+	for key, value := range bitset {
+		if value {
+			binBuilder.WriteString(fmt.Sprintf("%v\n", key))
+			//binBuilder.WriteString(fmt.Sprintf("Bit %v = %v \n", key, value))
+		}
+	}
+
+	return binBuilder.String(), true
+}
+
+func getBitSet(redisResponse []byte) []bool {
+	bitset := make([]bool, len(redisResponse)*8)
+	for i := range redisResponse {
+		for j := 7; j >= 0; j-- {
+			bit_n := uint(i*8 + (7 - j))
+			bitset[bit_n] = (redisResponse[i] & (1 << uint(j))) > 0
+		}
+	}
+	return bitset
+}

backend/utils/convert/convert.go

@@ -20,6 +20,7 @@ var (
 	xmlConv     XmlConvert
 	base64Conv  Base64Convert
 	binaryConv  BinaryConvert
+	bitSetConv  BitSetConvert
 	hexConv     HexConvert
 	gzipConv    GZipConvert
 	deflateConv DeflateConvert
@@ -38,6 +39,7 @@ var BuildInFormatters = map[string]DataConvert{
 	types.FORMAT_XML:          xmlConv,
 	types.FORMAT_HEX:          hexConv,
 	types.FORMAT_BINARY:       binaryConv,
+	types.FORMAT_BITSET:       bitSetConv,
 }
 
 var BuildInDecoders = map[string]DataConvert{

frontend/src/consts/value_view_type.js

@@ -10,6 +10,7 @@ export const formatTypes = {
     XML: 'XML',
     HEX: 'Hex',
     BINARY: 'Binary',
+    BITSET: 'BitSet',
 }
 
 /**