1 /* 2 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 #include "classfile/classListParser.hpp" 27 #include "runtime/os.hpp" 28 #include "runtime/java.hpp" 29 30 ClassListParser::ClassListParser(const char* file) { 31 _classlist_file = file; 32 _file = fopen(file, "r"); 33 if (_file == NULL) { 34 char errmsg[JVM_MAXPATHLEN]; 35 os::lasterror(errmsg, JVM_MAXPATHLEN); 36 vm_exit_during_initialization("Loading classlist failed", errmsg); 37 } 38 } 39 40 ClassListParser::~ClassListParser() { 41 if (_file) { 42 fclose(_file); 43 } 44 } 45 46 bool ClassListParser::parse_one_line() { 47 for (;;) { 48 if (fgets(_line, sizeof(_line), _file) == NULL) { 49 return false; 50 } 51 int line_len = (int)strlen(_line); 52 if (line_len > _max_allowed_line_len) { 53 tty->print_cr("input line too long (must be no longer than %d chars)", _max_allowed_line_len); 54 vm_exit_during_initialization("Loading classlist failed"); 55 } 56 if (*_line == '#') { // comment 57 continue; 58 } 59 break; 60 } 61 62 // Remove trailing \r\n 63 _line[strcspn(_line, "\r\n")] = 0; 64 return true; 65 } 66