返回提交历史
Modified
docs/misc/bvid_desc.md
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XFEstudio/bilibili-API-collect
feat: bv<-->av algo implemented in golang (#1027)
Co-authored-by: wsh <3443327820@qq.com>
ce07d83
代码差异
1 个文件
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@@ -328,6 +328,71 @@ public class AVBVConverter {
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```
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### Golang
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```go
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package main
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import (
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"fmt"
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"strings"
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)
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var (
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XOR_CODE = int64(23442827791579)
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MAX_CODE = int64(2251799813685247)
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CHARTS = "FcwAPNKTMug3GV5Lj7EJnHpWsx4tb8haYeviqBz6rkCy12mUSDQX9RdoZf"
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PAUL_NUM = int64(58)
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)
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func swapString(s string, x, y int) string {
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chars := []rune(s)
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chars[x], chars[y] = chars[y], chars[x]
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return string(chars)
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}
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func Bvid2Avid(bvid string) (avid int64) {
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s := swapString(swapString(bvid, 3, 9), 4, 7)
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bv1 := string([]rune(s)[3:])
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temp := int64(0)
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for _, c := range bv1 {
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idx := strings.IndexRune(CHARTS, c)
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temp = temp*PAUL_NUM + int64(idx)
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}
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avid = (temp & MAX_CODE) ^ XOR_CODE
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return
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}
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func Avid2Bvid(avid int64) (bvid string) {
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arr := [12]string{"B", "V", "1"}
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bvIdx := len(arr) - 1
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temp := (avid | (MAX_CODE + 1)) ^ XOR_CODE
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for temp > 0 {
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idx := temp % PAUL_NUM
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arr[bvIdx] = string(CHARTS[idx])
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temp /= PAUL_NUM
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bvIdx--
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}
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raw := strings.Join(arr[:], "")
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bvid = swapString(swapString(raw, 3, 9), 4, 7)
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return
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}
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func main() {
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avid := int64(1054803170)
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bvid := "BV1mH4y1u7UA"
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resAvid := Bvid2Avid(bvid)
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resBvid := Avid2Bvid(avid)
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fmt.Printf("convert bvid to avid: %v\tvalue:%v\n", avid == resAvid, resAvid)
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fmt.Printf("convert avid to bvid: %v\tvalue:%v\n", bvid == resBvid, resBvid)
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}
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```
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### C++
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```c++
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#include <algorithm>
@@ -387,6 +452,7 @@ int main() {
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```
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## 老版算法存档
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**以下算法已失效**，编解码函数值域有限，不推荐使用，在此仅作为存档