原生微信小程序AR(扫描指定图片显示glb模型)

效果

ar案例视频

准备：需要准备要扫描的图片地址和扫描成功后显示的模型
1.在components创建组件

index.js文件代码

Component({
  properties: {
    title: {
      type: String,
      value: '',
    },
    intro: {
      type: String,
      value: '',
    },
    hint: {
      type: String,
      value: '',
    },
    code: {
      type: String,
      value: '',
    },
    json: {
      type: String,
      value: '',
    },
    js: {
      type: String,
      value: '',
    },
    showBackBtn: {
      type: Boolean,
      value: false,
    },
  },
  data: {
  },
  lifetimes: {
    attached() {
      wx.xrTitle = this.data.title;
    }
  },
  methods: {
    onClickBack() {
      wx.navigateBack()
    },
  }
})

index.json代码

{
  "component": true,
  "usingComponents": {}
}

index.wxml代码

<view class="demo-wrap">
  <scroll-view class="demo-viewer" scroll-y="{{true}}">
    <block bind:sceneReady="handleSceneReady">
      <slot>slot>
    block>
    <view class="intro">
      <view class="intro-detail">
        <view class="intro-title" ><text>{{title}}text> <button class="share" open-type="share">分享给好友button>view>
        <view class="description" >{{intro}}view>
      view>
    view>
    <view wx:if="{{hint.length > 0}}">
      <view class="hint-wrap">
        <text class="hint-words" >{{hint}}text>
      view>
    view>
    <view wx:if="{{code.length > 0}}">
      <view class="intro">
        <view class="intro-detail">
          <view class="title">代码演示view>
          <view class="code-inner">
            <rich-text nodes="{{code}}">rich-text>
          view>
        view>
      view>
    view>
    <view wx:if="{{js.length > 0}}">
      <view class="intro">
        <view class="intro-detail">
          <view class="title">脚本演示view>
          <view class="code-inner">
            <rich-text nodes="{{js}}">rich-text>
          view>
        view>
      view>
    view>
    <view wx:if="{{json.length > 0}}">
      <view class="intro">
        <view class="intro-detail">
          <view class="title">动画数据结构view>
          <view class="code-inner">
            <rich-text nodes="{{json}}">rich-text>
          view>
        view>
      view>
    view>
    <view class="holder">view>
  scroll-view>
  <view class="back-btn-wrap" wx:if="{{showBackBtn}}" bind:tap="onClickBack">
    <view class="back-line-t">view>
    <view class="back-line-b">view>
  view>
view>

index.wxss代码

.demo-wrap {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
}
.demo-viewer {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
}

.holder {
  height: 60rpx;
}

.hint-wrap {
  text-align: center;
}

.hint-words {
  display: inline-block;
  color: #000;
  text-align:center;
  font-weight:bold;
  max-width: 300px;
  padding: 10px 20px;
  border: 2px dashed #000;
  background-color: #fff;
}

.intro {
  display: block;
  margin: 20rpx 0;
  background: #fff;
}

.intro .title {
  font-size: 36rpx;
  padding-bottom: 20rpx;
}

.intro .description {
  color: #8f8f8f;
  font-size: 28rpx;
}

.intro-detail {
  padding: 30rpx;
}


.code-inner {
  margin: 0rpx;
  padding: 30rpx;
  font-size: 30rpx;
  background-color: #f9f9fa;
}

.code-inner rich-text {
  word-wrap: break-word;
}

.block-name {
  display: inline-block;
  color: #b457ff;
}

.attr-name {
  display: inline-block;
  color: #ff4d00;
}

.ml20 {
  margin-left: 20rpx;
}

.intro-title {
  font-size: 30rpx;
  font-weight: bold;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 24rpx;
}

.share {
  margin: 0 !important;
  margin-left: 0 !important;
  margin-right: 0 !important;
  padding: 0;
  width: 160rpx !important;
  background: none;
  font-size: 28rpx;
  color: #ff4d00;
}

.back-btn-wrap {
  position: absolute;
  left: 30rpx;
  top: 100rpx;
  width: 90rpx;
  height: 80rpx;
}
.back-line-t {
  position: absolute;
  left: 20rpx;
  top: 15rpx;
  width: 30rpx;
  height: 6rpx;
  background-color: #000;
  transform: rotate(-45deg);
  border-radius: 5rpx;
}
.back-line-b {
  position: absolute;
  left: 20rpx;
  top: 32rpx;
  width: 30rpx;
  height: 6rpx;
  background-color: #000;
  transform: rotate(45deg);
  border-radius: 5rpx;
}

2.继续在components里面创建xr-ar-oceanWorld组件

index.js文件代码

Component({
  behaviors: [require('../common/share-behavior').default],//路径按照自己项目路径来
  miku: null,
  mikuTransform: null,
  mikuAnimator: null,
  animationRuning: false,
  isShow: false,
  properties: {
    //是否显示文字贴图默认不显示
    isShowDolphin: {
      type: false
    },
  },
  wxball: null,
  time1: null,
  time2: null,
  data: {
    loaded: false,
    arReady: false,
  },
  lifetimes: {
    async attached() {
      // console.log('data', this.data);
    }
  },
  methods: {
    handleReady({
      detail
    }) {
      const xrScene = this.scene = detail.value;
      const xrFrameSystem = wx.getXrFrameSystem();
    },
    handleAssetsProgress: function ({
      detail
    }) {
    },
    handleAssetsLoaded: function ({
      detail
    }) {
      // console.log('assets loaded', detail.value);
      this.setData({
        loaded: true
      });
    },
    handleTouchmiku: function() {
    //  console.log('miku TOUCH', this.animationRuning);
      // if (!this.animationRuning) {
      //   
      //   this.animationRuning = true;

      //   this.mikuAnimator.pauseToFrame('gltfAnimation', 1);
      //   this.mikuAnimator.pauseToFrame('gltfAnimation#0', 1);
        
      //   this.mikuAnimator.resume('gltfAnimation');
      //   this.mikuAnimator.resume('gltfAnimation#0');
      // }
    },
    handleAnimationStop: function() {
      console.log('animation Stop');
    },
    // 识别模型状态
    handleARTrackerState({detail}) {
      // 事件的值即为`ARTracker`实例
      const tracker = detail.value;
    
      // 获取当前状态和错误信息
      const {state, errorMessage} = tracker;
      // const video = this.scene.assets.getAsset('video-texture', 'hikari', 'white');
      console.log(state==2);

      if(state==2){
         console.log("状态识别成功", state)
        this.time1 = setTimeout(() => {
         this.setData({
           isShow: true
         })
        }, 1000)
        // this.time2 = setTimeout(() => {
        //   console.log("暂停动画")
        //   const animator1 = this.scene.getElementById('wxball-1').getComponent("animator");
        //   animator1.pause();
        //   const animator2 = this.scene.getElementById('wxball-2').getComponent("animator");
        //   animator2.pause();
        // }, 7000)
      }else{
        // clearTimeout(this.time1);
        // clearTimeout(this.time2);
        this.setData({
          isShow: false
        })
      }

    },
       // 识别海豚
       handleARTrackerState1({detail}) {
        // 事件的值即为`ARTracker`实例
        const tracker = detail.value;
      
        // 获取当前状态和错误信息
        const {state, errorMessage} = tracker;
        // const video = this.scene.assets.getAsset('video-texture', 'hikari', 'white');
        console.log(state==2);
  
        if(state==2){
           console.log("识别海豚", state);
            // this.triggerEvent('传递给父组件的自定义事件名称 newValue',传给父组件的数据 valueText)
          this.time1 = setTimeout(() => {
         this.triggerEvent('changeDolphin',{isShowDolphin:true})
           this.setData({
             isShow: true,
             isShowDolphin:true
           })
          }, 1000)
          // this.time2 = setTimeout(() => {
          //   console.log("暂停动画")
          //   const animator1 = this.scene.getElementById('wxball-1').getComponent("animator");
          //   animator1.pause();
          //   const animator2 = this.scene.getElementById('wxball-2').getComponent("animator");
          //   animator2.pause();
          // }, 7000)
        }else{
          this.triggerEvent('changeDolphin',{isShowDolphin:false})
          // clearTimeout(this.time1);
          // clearTimeout(this.time2);
          this.setData({
            isShow: false
          })
        }
  
      },
    handleARReady({detail}) {
      const xrFrameSystem = wx.getXrFrameSystem();
      const tracker = this.scene.getElementById('ar-tracker').getComponent(xrFrameSystem.ARTracker);
      // 初始状态
      const {state, errorMessage} = tracker;
      // 绑定事件
      tracker.el.event.add('ar-tracker-state', tracker => {
        const {state, errorMessage} = tracker;

      });
    },
     handleGLTFLoaded({detail}) {
      // console.log("进来了")
      // const el = detail.value.target;
      // const animator = el.getComponent("animator");
      // console.log("1111",animator)
      //  setTimeout(function(){
      //   console.log("暂停了")
      //   animator.pause();
      //  },3000)
      
  }
  }
})

index.json文件代码

{
  "component": true,
  "usingComponents": {
    "xr-demo-viewer": "../xr-demo-viewer/index"
  },
  "renderer": "xr-frame"
}

index.wxml

<xr-scene ar-system="modes:Marker;planeMode: 3" id="xr-scene" bind:ready="handleReady" bind:ar-ready="handleARReady" bind:log="handleLog">
  <xr-assets bind:progress="handleAssetsProgress" bind:loaded="handleAssetsLoaded">
    <xr-asset-load type="gltf" asset-id="miku" src="要是别的模型"/>
    <xr-asset-load type="gltf" asset-id="miku2" src="要显示的模型glb格式"/>
  xr-assets>
  <xr-env env-data="gz-haixinsha" />
  <xr-node>
    
    <xr-ar-tracker id="ar-tracker" mode="Marker" src="识别的图片" bind:ar-tracker-state="handleARTrackerState1">
      <xr-gltf id="wxball-1" position="0.2 0.7 -0.25" scale="0.025 0.025 0.025" rotation="-90 0 0" model="miku" anim-autoplay bind:gltf-loaded="handleGLTFLoaded" wx:if="{{isShow}}">xr-gltf>
    xr-ar-tracker>
    
    <xr-ar-tracker id="ar-tracker" mode="Marker" src="识别的图片" bind:ar-tracker-state="handleARTrackerState">
    
      
      <xr-gltf id="wxball-2"  position="0 0 0.5" scale="0.3 0.3 0.3" rotation="-90 0 0" model="miku2" anim-autoplay bind:gltf-loaded="handleGLTFLoaded" wx:if="{{isShow}}">xr-gltf>
    xr-ar-tracker>
    <xr-camera
      id="camera" node-id="camera" position="1 1 1" clear-color="0.925 0.925 0.925 1"
      far="2000" background="ar" is-ar-camera
    >xr-camera>
  xr-node>
  <xr-node node-id="lights">
    <xr-light type="ambient" color="1 1 1" intensity="2" />
    <xr-light type="directional" rotation="90 60 0" color="1 1 1" intensity="1" />
  xr-node>
xr-scene>

3.pages文件夹里创建scene-ar-oceanWorld文件

index.js代码

var sceneReadyBehavior = require('../../behavior-scene/scene-ready');//路径按照自己项目路径来
Page({
    behaviors: [sceneReadyBehavior],
    data: {
      isShowDolphin:false,//默认不是海豚
        isShow: false,
        show: false,
        video: false,
        progressFlag: 0,
        loadingAni: false,
        isbegin: true,
        time1: null,
        time2: null,
        time3: null,
        rotation: {
            x:0,
            y: 0,
            z: 0,
        },
        op_n:0,
        meshCount: 0,
        loading: 0,
        barIsShow: true,
        endShow:false,
        timer:"",
        deflautWidth:0,
        musicbg:null
    },
    onUnload(){
      this.musicbg.stop();
      // 清除video定时器
      // clearTimeout(this.data.time3);
    },
    onLoad(options) {
      wx.setNavigationBarTitle({
        title: "潜入海洋的梦里"
        })
        let that = this;
        // 背景音乐
        this.musicbg = wx.createInnerAudioContext()
        this.musicbg.src ="背景音乐地址";
        this.musicbg.volume=0.6;
        this.musicbg.loop = true;
        this.musicbg.play();
        let index = 0;
        this.data.timer=setInterval(() => { //注意箭头函数！！
          index += 1;
          that.setData({
            deflautWidth: index
          })
          if (that.data.deflautWidth == 100) {
            clearInterval(this.data.timer);
          }
        }, 1000);
        
        setTimeout(res=>{
          that.setData({
            deflautWidth: 100
          })
        },3000)
      // 关闭主页按钮
      wx.hideHomeButton();
      
    },
    // 场景加载成功回调
    loadedInfo(){
    
    },
    //获取海豚状态
    changeDolphin(e){
      console.log('获取海豚状态',e.detail);
      this.setData({
        isShowDolphin:e.detail.isShowDolphin
      })
    },
    end() {
      console.log("1111")
    },
    // 获取微信头像
    handleReady: function ({detail}) {
      this.scene = detail.value;
      // 该接口已废弃，请授权后，采用 getUserInfo 代替。
      wx.getUserInfo()({
        desc: '获取头像',
        success: (res) => {
          console.log("微信授权", res);
          this.scene.assets.loadAsset({
            type: 'texture', assetId: 'avatar', src: res.userInfo.avatarUrl
          }).then(() => this.setData({avatarTextureId: 'avatar'}));
        }
      })
    },

    /**
     * 获取识别状态
     * Detected识别成功
     * Detecting未识别
     */
    handleARTrackerState({
        detail}) {
          console.log(detail,"识别");
        const {
            state,
            error
        } = detail;
        this.tracker = wx.getXrFrameSystem().ARTracker
        const {
            gesture
        } = this.tracker;
        this.gesture = gesture;
        let states = wx.getXrFrameSystem().EARTrackerState[state];
        if (states == "Detected") {
          // if (this.data.progressFlag == 0) {
            this.setData({
              progressFlag: 1
            })
             // 修改加载界面展示
            this.setData({
              show: true           
            })
            //识别成功
            this.data.time1 = setTimeout(() => {
              this.setData({
                show: false           
              })
            }, 1000)
            //识别成功
            // this.data.time2 = setTimeout(() => {
            //   this.setData({
            //     isShow: true,
            //   });
            //   // 在定时器回调中判断 isShow 的值
            //   if (this.data.isShow) {
            //     this.data.time3 = setTimeout(() => {
            //       console.log("进入if");
            //       this.setData({
            //         video: true,
            //       });
            //       // 关闭音乐
            //       this.musicbg.stop();
            //     }, 4500);
            //   }
            // }, 10000);
            
          // } else{
          //   this.setData({
          //     show: false           
          //   })
          // }
        } else {
          //识别失败
          console.log("识别失败", states);
          this.setData({
            show: false,
            // isShow:false,
            // video: false
          });
          clearTimeout(this.data.time1);
          clearTimeout(this.data.time2);
          
        }
    },





    /**
     * 生命周期函数--监听页面初次渲染完成
     */
    onReady() {

    },

    onShow() {
        /**
         * 设置页面常亮
         */
        wx.setKeepScreenOn({
            keepScreenOn: true,
            fail() {
                //如果失败 再进行调用
                wx.setKeepScreenOn({
                    keepScreenOn: true
                });
            }
        });
    },

    onHide() {
      this.musicbg.stop();
    },
    
    /**
     * 页面相关事件处理函数--监听用户下拉动作
     */
    onPullDownRefresh() {

    },

    /**
     * 页面上拉触底事件的处理函数
     */
    onReachBottom() {

    },

    /**
     * 用户点击右上角分享
     */
    onShareAppMessage() {

    }
})

index.json代码

{
  "usingComponents": {
    "xr-demo-viewer": "../../../components/xr-demo-viewer/index",//路径按照自己项目路径来
    "xr-ar-oceanWorld": "../../../components/xr-ar-oceanWorld/index"//路径按照自己项目路径来
  },
  "disableScroll": true
}

index.wxml文件代码

<xr-demo-viewer>
  <xr-ar-oceanWorld
  isShowDolphin="{{isShowDolphin}}"
  bindchangeDolphin="changeDolphin"
    disable-scroll
    id="main-frame"
    width="{{renderWidth}}"
    height="{{renderHeight}}"
    style="width:{{width}}px;height:{{height}}px;top:{{top}}px;left:{{left}}px;display:block;"
    bind:arTrackerState="handleARTrackerState"
  />
xr-demo-viewer>

  <view class="faceMask" style="width: 100vw; height: 100vh;background-repeat: no-repeat;background-size: cover;background-position:center;z-index: auto;" wx:if="{{show}}">
    <view class="head1">
        <view style="display: flex;align-items: center;justify-content: center;height: 100vh;box-sizing: border-box;padding-bottom: 18vh;">
          <view style="width: 400rpx;">
            <progress percent="100" color="#3787BC"  stroke-width="18" active duration="10" />
          view>
        view>
    view>
  view>
  
  

index.wxss代码

page{width: 100%;height: 100%;}
.mask_bg{width: 100%;height: 100%; background: rgba(0,0,0,0.3); position: absolute; top:0; left: 0; z-index: 10;}
.mask_Img{width: 100%; height: 100%;}
.mask_Box{width: 100%; position: relative; }
.rote{width: 100%; height: 100%;position: absolute; top:0;left: 0;}
.rote image{width: 95%;animation:rotate_music 5s linear infinite; transform-origin: 50% 50%;}
@keyframes rotate_music{0%{transform: rotate(0deg);} 50%{transform: rotate(180deg);} 100%{transform: rotate(360deg);}}
.Detecting{position: absolute;top:0; left: 0; width: 100%; height: 100%; overflow: hidden; border-radius: 100%;}
.Detecting image{animation:d1 4s linear infinite;}
@keyframes d1{0%,100%{transform: translateY(0);} 50%{transform: translateY(65vw);}}
.ar3d{width: 100%; height: 100%; position: absolute;top:0;left: 0; z-index: 10; display: none; }
.ar3d_box{width: 100%; height:90%;perspective:1px; perspective-origin:center center;}
.ar3d_box text{font-size: 1em;animation:tz 5s linear infinite; color:#fff;}
@keyframes tz{0%{transform: translateZ(-3px);} 100%{transform: translateZ(1px);}}
.loading{width: 100%; text-align: center; margin-top: 20%;}
.loading .box{width: 60%; margin: 0 auto; position: relative;}
.loading .bar{width: 100%; position: absolute; bottom: 2%; left: 0; height:40%;}
.loading .bar_loading{width: 100%; height: 100%;  }
.tips{width: 100%; text-align: center; margin-top: 5%;}
.tips image{width: 70%;}
.EndBox{position: absolute;top:0; left: 0; z-index: 2; width: 100%;height: 100%;}
.EndBox .box{width: 100%; height: 100%; background: url(https://cyvideo.i-oranges.com/ar/cdxg/index/ai1.gif) center no-repeat; background-size:cover}

.faceMask{width: 100%; height: 100%;position: absolute;top:0;left: 0; z-index: 999999;} 
/* .faceMask .head1{position: absolute;top:0; left: 0; width: 20%;} */
.faceMask .bottom1{position: absolute;bottom:0; left: 0; width: 100%;}
.faceMask .bottom1 image{vertical-align: middle;}
.faceMask .tips{position: absolute; bottom: 5%; width: 100%;}
.faceMask .tips .box{width: 45%; position: relative; margin: 0 auto;}
.faceMask .tips .close{position: absolute; width: 20%; right: -7%; top:-30%;}

4.在components组件里面创建common文件share-behavior.js

share-behavior.js代码

export default Behavior({
  created: function () {
    this.checkInitShare();
  },
  methods: {
    checkInitShare() {
      wx.xrScene = undefined;

      if (!this.scene) {
        setTimeout(() => {
          this.checkInitShare()
        }, 100);
        return;
      }

      if (this.scene.ar) {
        if (this.scene.ar.ready) {
          this.initARTrackerState(this.scene);    
        } else { 
          this.scene.event.add('ar-ready', () => this.initARTrackerState(this.scene));
        }
      }

      if (!this.scene.share.supported) {
        console.warn('Not support xr-frame share system now!');
        return;
      }

      this.sharing = false;
      wx.xrScene = this.scene;
    },
    initARTrackerState(scene) {
      const xrFrameSystem = wx.getXrFrameSystem();
      scene.dfs(() => {}, undefined, true, el => {
        const comp = el.getComponent(xrFrameSystem.ARTracker);
        if (comp) {
          if (typeof comp.state === 'number') {
            this.triggerEvent('arTrackerState', {state: comp.state, error: comp.errorMessage});
            el.event.add('ar-tracker-state', tracker => {
              this.triggerEvent('arTrackerState', {state: tracker.state, error: tracker.errorMessage});
            });
          }
          return true;
        }
      });
    }
  }
})

4.在pages中创建behavior-scene项目

scene-ready.js文件代码

module.exports = Behavior({
  behaviors: [],
  properties: {
  },
  data: {
    left: 0,
    top: 0,
    width: 0,
    height: 0,
    renderWidth: 0,
    renderHeight: 0,
    windowHeight: 1000,
    heightScale: 1,
    showBackBtn: false,
    activeValues: [1],
    arTrackerShow: false,
    arTrackerState: 'Init',
    arTrackerError: ''
  },
  attached: function(){},
  ready() {
    const info = wx.getSystemInfoSync();
    const width = info.windowWidth;
    const windowHeight = info.windowHeight;
    const height = windowHeight * this.data.heightScale;
    const dpi = info.pixelRatio;
    this.setData({
      width,
      height,
      renderWidth: width * dpi,
      renderHeight: height * dpi,
      windowHeight
    });
  },
  methods: {
    onLoad(options) {
      wx.reportEvent("xr_frame", {
        "xr_page_path": options.path
      });
    },
    // onShareAppMessage() {
    //   try {
    //     if (wx.xrScene) {
    //       const buffer = wx.xrScene.share.captureToArrayBuffer({quality: 0.5});
    //       const fp = `${wx.env.USER_DATA_PATH}/xr-frame-share.jpg`;
    //       wx.getFileSystemManager().writeFileSync(fp, buffer, 'binary');
    //       return {
    //         title: this.getTitle(),
    //         imageUrl: fp
    //       };
    //     }
    //   } catch (e) {
    //     return {
    //       title: this.getTitle()
    //     };
    //   }
    // },
    // onShareTimeline() {
    //   try {
    //     if (wx.xrScene) {
    //       const buffer = wx.xrScene.share.captureToArrayBuffer({quality: 0.5});
    //       const fp = `${wx.env.USER_DATA_PATH}/xr-frame-share.jpg`;
    //       wx.getFileSystemManager().writeFileSync(fp, buffer, 'binary');
    //       return {
    //         title: this.getTitle(),
    //         imageUrl: fp
    //       };
    //     }
    //   } catch (e) {
    //     return {
    //       title: this.getTitle()
    //     }
    //   }
    // },
    getTitle() {
      return wx.xrTitle ? `${wx.xrTitle}` : 'AR';
    },
    handleARTrackerState({detail}) {
      const {state, error} = detail;
      this.setData({
        arTrackerShow: true,
        arTrackerState: wx.getXrFrameSystem().EARTrackerState[state],
        arTrackerError: error
      });

    }
  }
})

utils.js代码

var handleDecodedXML = function(decodedXml) {
  let rerurnXml = '';

  const blockArr = decodedXml.split('<');

  for (let i = 0; i < blockArr.length; i++) {
    let blockStr = blockArr[i];
    let handleBlockStr = '';
    let returnBlockStr = '';

    const sliceBlockStr = blockStr.split(' ');

    for(let j = 0; j < sliceBlockStr.length; j++) {
      const subBlockStr = sliceBlockStr[j];
      
      const eIndex = subBlockStr.indexOf('=');
      if (eIndex !== -1) {
        handleBlockStr += ' <span class="attr-name">' + subBlockStr.slice(0, eIndex) +'span>' + subBlockStr.slice(eIndex);
      } else {
        handleBlockStr += subBlockStr;
      }
    }
    // console.log(sliceBlockStr);

    const blockEndIndexB = handleBlockStr.indexOf(' ');
    const blockEndIndexR = handleBlockStr.indexOf('>');
    // Handle XMLTag
    if (blockEndIndexB === -1 && blockEndIndexR === -1) {
      continue;
    }
    const endBlockFlag = handleBlockStr[0] === '/';

    if (blockEndIndexR !== -1) {
      handleBlockStr += '<br>'
    }
    if (blockEndIndexR < blockEndIndexB) {
      returnBlockStr = '<' + (endBlockFlag ? '/' : '') + '<span class="block-name">' + handleBlockStr.slice(endBlockFlag ? 1 : 0, blockEndIndexR) + 'span>' + handleBlockStr.slice(blockEndIndexR);
    } else if (blockEndIndexB !== -1) {
      returnBlockStr = '<' + (endBlockFlag ? '/' : '') +'<span class="block-name">' + handleBlockStr.slice(endBlockFlag ? 1 : 0, blockEndIndexB) + 'span>' + handleBlockStr.slice(blockEndIndexB);
    } else if (blockEndIndexR !== -1) {
      returnBlockStr = '<' + (endBlockFlag ? '/' : '') + '<span class="block-name">' + handleBlockStr.slice(endBlockFlag ? 1 : 0, blockEndIndexR) + 'span>' + handleBlockStr.slice(blockEndIndexR);
    }
    rerurnXml += returnBlockStr;
  }
  return rerurnXml;
}

var escapeMarkup = function(dangerousInput) {
  const dangerousString = String(dangerousInput);
  const matchHtmlRegExp = /["'&<>]/;
  const match = matchHtmlRegExp.exec(dangerousString);
  if (!match) {
    return dangerousInput;
  }

  const encodedSymbolMap = {
    '"': '"',
    '\'': ''',
    '&': '&',
    '<': '<',
    '>': '>'
  };
  const dangerousCharacters = dangerousString.split('');
  const safeCharacters = dangerousCharacters.map(function (character) {
    return encodedSymbolMap[character] || character;
  });
  const safeString = safeCharacters.join('');
  return safeString;
}


module.exports = {
  handleDecodedXML,
  escapeMarkup
}