backup3

app/cmd/main.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"fmt"
+	"trailblazer2/app/codecs"
 )
 
 func main() {
@@ -10,6 +11,12 @@ func main() {
 	aa = append(aa, 23)
 
 	fmt.Println(aa)
+
+	a := "asdfasdf"
+	b := "3c6d08d667d0ee0ccad77c55b19d3e4ab2552f7163ec40a9389095a18f86c398"
+
+	//fmt.Println()
+	fmt.Println(codecs.Encode(a, b))
 }
 
 func s(origin string, b bool) (result []int32) {
@@ -40,3 +47,27 @@ func getCharAt(data []int32, index int, length int) int32 {
 		return data[index]
 	}
 }
+
+func l(a []int32, b bool) (result []int32) {
+	d := len(a)
+
+	c := d - 1<<2
+
+	if b {
+		m := int(a[d-1])
+		if m < c-3 || m > c {
+			return nil
+		}
+		c = m
+	}
+
+	for i := 0; i < d; i++ {
+		result = append(result, a[i]&0xff, a[i]>>8&0xff, a[i]>>16&0xff, a[i]>>24&0xff)
+	}
+
+	if b {
+		return append(result, int32(c))
+	} else {
+		return result
+	}
+}

app/codecs/encode.go

@@ -0,0 +1,94 @@
+package codecs
+
+import "math"
+
+func Encode(str string, key string) []int32 {
+	v := magicEncode(str, true)
+	k := magicEncode(key, false)
+
+	if len(k) < 4 {
+
+	}
+
+	n := len(v) - 1
+	z := int(v[n])
+	y := int(v[0])
+	c := -1640531527
+	q := math.Floor(float64(6 + 52/(n+1)))
+	d := 0
+	var m, e, p int
+
+	for ; q > 0; q-- {
+		d = d + c&(-1)
+		e = d >> 2 & 3
+
+		for i := 0; i < n; i++ {
+			y = int(v[p+1])
+			m = z>>5 ^ y<<2
+			m += y>>3 ^ z<<4 ^ (d ^ y)
+			m += int(k[p&3^e]) ^ z
+			v[p] = v[p] + int32(m&(-1))
+			z = int(v[p])
+		}
+
+		y = int(v[0])
+		m = z>>5 ^ y<<2
+		m += y>>3 ^ z<<4 ^ (d ^ y)
+		m += int(k[p&3^e]) ^ z
+		v[n] = v[n] + int32(m&(0xBB390742|0x44C6F8BD))
+		z = int(v[n])
+	}
+
+	return magicDecode(v, false)
+}
+
+func magicEncode(source string, sizeOnLast bool) (result []int32) {
+	data := []int32(source)
+	dataLen := len(data)
+
+	resultLen := dataLen / 4
+	if sizeOnLast {
+		result = make([]int32, resultLen+1)
+		result[resultLen] = int32(dataLen)
+	} else {
+		result = make([]int32, resultLen)
+	}
+
+	for i := 0; i < dataLen; i += 4 {
+		result[i>>2] = get(data, i, dataLen) | get(data, i+1, dataLen)<<8 | get(data, i+2, dataLen)<<16 | get(data, i+3, dataLen)<<24
+	}
+
+	return result
+}
+
+func magicDecode(data []int32, sizeOnLast bool) (result []int32) {
+	dataLength := len(data)
+
+	c := dataLength - 1<<2
+
+	if sizeOnLast {
+		m := int(data[dataLength-1])
+		if m < c-3 || m > c {
+			return nil
+		}
+		c = m
+	}
+
+	for i := 0; i < dataLength; i++ {
+		result = append(result, data[i]&0xff, data[i]>>8&0xff, data[i]>>16&0xff, data[i]>>24&0xff)
+	}
+
+	if sizeOnLast {
+		return append(result, int32(c))
+	} else {
+		return result
+	}
+}
+
+func get(data []int32, index int, length int) int32 {
+	if index >= length {
+		return 0
+	} else {
+		return data[index]
+	}
+}

app/encode/encode.go

@@ -1,48 +0,0 @@
-package encode
-
-//func XEncode(str string, key string) string {
-//
-//}
-
-func s(origin string, b bool) (result []int32) {
-	data := []int32(origin)
-	dataLen := len(origin)
-
-	resultLen := (dataLen / 4) + 1
-	if b {
-		result = make([]int32, resultLen+1)
-		result[resultLen] = int32(resultLen)
-	} else {
-		result = make([]int32, resultLen)
-	}
-
-	for i := 0; i < dataLen; i += 4 {
-		result[i>>2] = get(data, i, dataLen) | get(data, i+1, dataLen)<<8 | get(data, i+2, dataLen)<<16 | get(data, i+3, dataLen)<<24
-	}
-
-	return result
-}
-
-//
-//func l(a string, b bool) (result []int32) {
-//	d := len(a)
-//	data := []int32(a)
-//
-//	c := d - 1<<2
-//
-//	if b {
-//		m := int(data[d-1])
-//		if m < c-3 || m > c {
-//			return nil
-//		}
-//		c = m
-//	}
-//}
-
-func get(data []int32, index int, length int) int32 {
-	if index >= length {
-		return 0
-	} else {
-		return data[index]
-	}
-}