content: /*
   * Copyright (C) 2016-2023 ActionTech.
   * based on code by MyCATCopyrightHolder Copyright (c) 2013, OpenCloudDB/MyCAT.
   * License: http://www.gnu.org/licenses/gpl.html GPL version 2 or higher.
   */
  package com.actiontech.dble.route.parser;
  
  import com.actiontech.dble.route.parser.util.ParseUtil;
  
  /**
   * @author songwie
   */
  public final class ManagerParseHeartbeat {
      private ManagerParseHeartbeat() {
      }
  
      public static final int OTHER = -1;
  
      // SHOW @@HEARTBEAT
      static int show2HeaCheck(String stmt, int offset) {
          if (stmt.length() > offset + "RTBEAT".length()) {
              char c1 = stmt.charAt(++offset);
              char c2 = stmt.charAt(++offset);
              char c3 = stmt.charAt(++offset);
              char c4 = stmt.charAt(++offset);
              char c5 = stmt.charAt(++offset);
              char c6 = stmt.charAt(++offset);
              if ((c1 == 'R' || c1 == 'r') && (c2 == 'T' || c2 == 't') && (c3 == 'B' || c3 == 'b') &&
                      (c4 == 'E' || c4 == 'e') && (c5 == 'A' || c5 == 'a') && (c6 == 'T' || c6 == 't')) {
                  if (stmt.length() > offset + ".DETAIL".length()) {
                      char c7 = stmt.charAt(++offset);
                      if (c7 == '.') {
                          return show2HeaDetailCheck(stmt, offset);
                      }
                  }
                  if (ParseUtil.isErrorTail(++offset, stmt)) {
                      return OTHER;
                  }
                  return ManagerParseShow.HEARTBEAT;
              }
          }
          return OTHER;
      }
  
      // SHOW @@HEARTBEAT.DETAIL
      static int show2HeaDetailCheck(String stmt, int offset) {
          if (stmt.length() > offset + "DETAIL".length()) {
              char c1 = stmt.charAt(++offset);
              char c2 = stmt.charAt(++offset);
              char c3 = stmt.charAt(++offset);
              char c4 = stmt.charAt(++offset);
              char c5 = stmt.charAt(++offset);
              char c6 = stmt.charAt(++offset);
              if ((c1 == 'D' || c1 == 'd') && (c2 == 'E' || c2 == 'e') && (c3 == 'T' || c3 == 't') &&
                      (c4 == 'A' || c4 == 'a') && (c5 == 'I' || c5 == 'i') && (c6 == 'L' || c6 == 'l')) {
                  if (stmt.length() > ++offset && stmt.charAt(offset) != ' ') {
                      return OTHER;
                  }
                  return ManagerParseShow.HEARTBEAT_DETAIL;
              }
          }
          return OTHER;
      }
  }
  