feat: fix webpack PublicPath prob.

Author: xiazeyu

src/wpPublicPath.js

@@ -7,50 +7,95 @@
 
 /**
  * Get current script path
- * @return {String} The accessable path of current script
+ * @return {String} The path of current script
  * @example
- * get 'dev/' or 'https://www.host.com/test/js/'
+ * get 'file:///C:/git/live2d-widget/dev/bundle.js' or 'https://www.host.com/test/js/bundle.js'
  */
 
 function getCurrentPath(){
 
-  let currentScriptPath = null;
-
   try{
-    // FF, Chrome
+
+    // FF, Chrome, Modern browsers
     // use their API to get the path of current script
 
     // a.b();
-    // console.log('Stage1');
-    let currentScriptElement = document.currentScript;
-    currentScriptPath = currentScriptElement.getAttribute('src').replace(/[^/\\\\]+$/, '');
+    console.log('wpStage1');
+
+    return document.currentScript.src;
+
+    if(DOC.currentScript){ // FF 4+
+      return DOC.currentScript.src;
+    }
+
   }catch(e){
-    // IE 10 +, Safari and Opera 9
 
-    // console.log('Stage2');
-    console.log(e);
+    // document.currentScript doesn't supports
+
+    console.log('wpStage2');
 
-    let stack = e.stack || e.sourceURL || e.stacktrace,
-    rExtractUri = /(file:\/{3}\w:)(\/[^\/]*){3}\//;
-    // TODO: Fix wrong RegExp: rExtractUri
-    let absPath = rExtractUri.exec(stack);
-    currentScriptPath = absPath[0];
+    // Method 1
+    // https://github.com/mozilla/pdf.js/blob/e081a708c36cb2aacff7889048863723fcf23671/src/shared/compatibility.js#L97
+    // IE, Chrome < 29
 
-    if(currentScriptPath === ''){
-      rExtractUri = /(?:http|https|file):\/\/.*?\/.+?.js/;
-      absPath = rExtractUri.exec(stack);
-      currentScriptPath = absPath[0];
+    let scripts = document.getElementsByTagName('script');
+    return scripts[scripts.length - 1].src;
+
+/*
+    // Method 2
+    // parse the error stack trace maually
+    // https://github.com/workhorsy/uncompress.js/blob/master/js/uncompress.js#L25
+
+    let stack = e.stack;
+    let line = null;
+
+    // Chrome and IE
+    if (stack.indexOf('@') !== -1) {
+      line = stack.split('@')[1].split('\n')[0];
+    // Firefox
+    } else {
+      line = stack.split('(')[1].split(')')[0];
     }
+    line = line.substring(0, line.lastIndexOf('/')) + '/';
+    return line;
+*/
+/*
+    // Method 3
+    // https://www.cnblogs.com/rubylouvre/archive/2013/01/23/2872618.html
 
+    let stack = e.stack;
+    if(!stack && window.opera){
+      // Opera 9没有e.stack,但有e.Backtrace,但不能直接取得,需要对e对象转字符串进行抽取
+      stack = (String(e).match(/of linked script \S+/g) || []).join(' ');
+    }
+    if(stack){
+      // e.stack最后一行在所有支持的浏览器大致如下:
+      // chrome23:
+      // @ http://113.93.50.63/data.js:4:1
+      // firefox17:
+      // @http://113.93.50.63/query.js:4
+      // opera12:
+      // @http://113.93.50.63/data.js:4
+      // IE10:
+      // @ Global code (http://113.93.50.63/data.js:4:1)
+      stack = stack.split(/[@ ]/g).pop(); // 取得最后一行,最后一个空格或@之后的部分
+      stack = stack[0] == '(' ? stack.slice(1,-1) : stack;
+      return stack.replace(/(:\d+)?:\d+$/i, ''); // 去掉行号与或许存在的出错字符起始位置
+    }
+    let nodes = head.getElementsByTagName('script'); // 只在head标签中寻找
+    for(var i = 0, node; node = nodes[i++];){
+      if(node.readyState === 'interactive'){
+        return node.className = node.src;
+      }
+    }
+*/
   }
 
-  return currentScriptPath;
-
 }
 
 // expose the path to the global,
 // and wp will finish the following work
-__webpack_public_path__ = getCurrentPath();
+__webpack_public_path__ = getCurrentPath().replace(/[^/\\\\]+$/, '');
 if (process.env.NODE_ENV === 'development'){
   console.log(`wpPP: publicPath: ${__webpack_public_path__}`);
 }