Add files via upload

Author: dev-coco

csr.js

@@ -0,0 +1,56 @@
+
+function createCsr (type) {
+  if (!type) return require('CSRBitMap').toCompressedString()
+  const arr = []
+
+  const allNumbers = Array.from({ length: 43094 - 1 + 1 }, (_, i) => i + 1)
+  for (let i = 0; i < 100; i++) {
+    const randomIndex = Math.floor(Math.random() * allNumbers.length)
+    const randomNumber = allNumbers[randomIndex]
+    arr.push(randomNumber)
+    allNumbers.splice(randomIndex, 1)
+  }
+  
+  // 二进制转换文本
+  function convertToBinaryString (num) {
+    const binaryString = num.toString(2)
+    const padding = '0'.repeat(binaryString.length - 1)
+    return padding + binaryString
+  }
+  // 二进制转换base64
+  function convertToBase64String (binaryString) {
+    const list = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-_'
+    const sixBitChunks = (binaryString + '00000').match(/[01]{6}/g)
+    let base64String = ''
+    for (let i = 0; i < sixBitChunks.length; i++) {
+      base64String += list[parseInt(sixBitChunks[i], 2)]
+    }
+    return base64String
+  }
+  // 压缩字符串
+  function toCompressedString () {
+    const bitMap = []
+    for (const item in arr) {
+      bitMap[arr[item]] = 1
+    }
+    if (bitMap.length === 0) return ''
+    const compressedBits = []
+    let count = 1
+    let currentBit = bitMap[0] || 0
+    const currentBitString = currentBit.toString(2)
+    for (let i = 1; i < bitMap.length; i++) {
+      const nextBit = bitMap[i] || 0
+      if (nextBit === currentBit) {
+        count++
+      } else {
+        compressedBits.push(convertToBinaryString(count))
+        currentBit = nextBit
+        count = 1
+      }
+    }
+    if (count) compressedBits.push(convertToBinaryString(count))
+    return convertToBase64String(currentBitString + compressedBits.join(''))
+  }
+  return toCompressedString()
+}
+createCsr()