[GitHub] [iotdb] JackieTien97 commented on a diff in pull request #7017: [IOTDB-4133] Throw illegal path exception contains number which has been surrounded with quote

[GitBox <gi...@apache.org>]

JackieTien97 commented on code in PR #7017:
URL: https://github.com/apache/iotdb/pull/7017#discussion_r947357310


##########
tsfile/src/main/java/org/apache/iotdb/tsfile/read/common/parser/PathVisitor.java:
##########
@@ -64,12 +64,28 @@ private String parseNodeName(PathParser.NodeNameContext ctx) {
     if (nodeName.startsWith(TsFileConstant.BACK_QUOTE_STRING)
         && nodeName.endsWith(TsFileConstant.BACK_QUOTE_STRING)) {
       String unWrapped = nodeName.substring(1, nodeName.length() - 1);
-      if (StringUtils.isNumeric(unWrapped)
+      if (isRealNumber(unWrapped)
           || !TsFileConstant.IDENTIFIER_PATTERN.matcher(unWrapped).matches()) {
         return nodeName;
       }
       return unWrapped;
     }
     return nodeName;
   }
+
+  /** Return true if the str is a real number. Examples: 1.0; +1.0; -1.0; 0011; 011e3; +23e-3 */
+  public static boolean isRealNumber(String str) {
+    if (str.startsWith("+")) {
+      return NumberUtils.isCreatable(str.substring(1));
+    }
+    int index = 0;
+    // remove zeros
+    for (int i = 0, n = str.length(); i < n; i++) {
+      if (str.charAt(i) != '0') {
+        index = i;
+        break;
+      }
+    }
+    return NumberUtils.isCreatable(str.substring(index));
+  }

Review Comment:
   duplicated with previous, and it seems that `+0001` and `-00001` won't be considered



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