/* * Copyright 2012-2015 org.opencloudb. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.opencloudb.parser; import org.opencloudb.parser.util.ParseUtil; /** * @author mycat */ public final class ManagerParseReload { public static final int OTHER = -1; public static final int CONFIG = 1; public static final int ROUTE = 2; public static final int USER = 3; public static int parse(String stmt, int offset) { int i = offset; for (; i < stmt.length(); i++) { switch (stmt.charAt(i)) { case ' ': continue; case '/': case '#': i = ParseUtil.comment(stmt, i); continue; case '@': return reload2Check(stmt, i); default: return OTHER; } } return OTHER; } static int reload2Check(String stmt, int offset) { if (stmt.length() > ++offset && stmt.charAt(offset) == '@') { if (stmt.length() > ++offset) { switch (stmt.charAt(offset)) { case 'C': case 'c': return reload2CCheck(stmt, offset); case 'R': case 'r': return reload2RCheck(stmt, offset); case 'U': case 'u': return reload2UCheck(stmt, offset); default: return OTHER; } } } return OTHER; } // RELOAD @@CONFIG static int reload2CCheck(String stmt, int offset) { if (stmt.length() > offset + 5) { 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); if ((c1 == 'O' || c1 == 'o') && (c2 == 'N' || c2 == 'n') && (c3 == 'F' || c3 == 'f') && (c4 == 'I' || c4 == 'i') && (c5 == 'G' || c5 == 'g')) { if (stmt.length() > ++offset && stmt.charAt(offset) != ' ') { return OTHER; } return CONFIG; } } return OTHER; } // RELOAD @@ROUTE static int reload2RCheck(String stmt, int offset) { if (stmt.length() > offset + 4) { char c1 = stmt.charAt(++offset); char c2 = stmt.charAt(++offset); char c3 = stmt.charAt(++offset); char c4 = stmt.charAt(++offset); if ((c1 == 'O' || c1 == 'o') && (c2 == 'U' || c2 == 'u') && (c3 == 'T' || c3 == 't') && (c4 == 'E' || c4 == 'e')) { if (stmt.length() > ++offset && stmt.charAt(offset) != ' ') { return OTHER; } return ROUTE; } } return OTHER; } // RELOAD @@USER static int reload2UCheck(String stmt, int offset) { if (stmt.length() > offset + 3) { char c1 = stmt.charAt(++offset); char c2 = stmt.charAt(++offset); char c3 = stmt.charAt(++offset); if ((c1 == 'S' || c1 == 's') && (c2 == 'E' || c2 == 'e') && (c3 == 'R' || c3 == 'r')) { if (stmt.length() > ++offset && stmt.charAt(offset) != ' ') { return OTHER; } return USER; } } return OTHER; } }