| /* |
| * Copyright (c) 1999, 2008, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package javax.management.loading; |
| |
| import static com.sun.jmx.defaults.JmxProperties.MLET_LOGGER; |
| |
| import java.io.BufferedReader; |
| import java.io.File; |
| import java.io.IOException; |
| import java.io.InputStreamReader; |
| import java.io.Reader; |
| import java.net.URL; |
| import java.net.URLConnection; |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.logging.Level; |
| |
| /** |
| * This class is used for parsing URLs. |
| * |
| * @since 1.5 |
| */ |
| class MLetParser { |
| |
| /* |
| * ------------------------------------------ |
| * PRIVATE VARIABLES |
| * ------------------------------------------ |
| */ |
| |
| /** |
| * The current character |
| */ |
| private int c; |
| |
| /** |
| * Tag to parse. |
| */ |
| private static String tag = "mlet"; |
| |
| |
| /* |
| * ------------------------------------------ |
| * CONSTRUCTORS |
| * ------------------------------------------ |
| */ |
| |
| /** |
| * Create an MLet parser object |
| */ |
| public MLetParser() { |
| } |
| |
| /* |
| * ------------------------------------------ |
| * PUBLIC METHODS |
| * ------------------------------------------ |
| */ |
| |
| /** |
| * Scan spaces. |
| */ |
| public void skipSpace(Reader in) throws IOException { |
| while ((c >= 0) && ((c == ' ') || (c == '\t') || (c == '\n') || (c == '\r'))) { |
| c = in.read(); |
| } |
| } |
| |
| /** |
| * Scan identifier |
| */ |
| public String scanIdentifier(Reader in) throws IOException { |
| StringBuilder buf = new StringBuilder(); |
| while (true) { |
| if (((c >= 'a') && (c <= 'z')) || |
| ((c >= 'A') && (c <= 'Z')) || |
| ((c >= '0') && (c <= '9')) || (c == '_')) { |
| buf.append((char)c); |
| c = in.read(); |
| } else { |
| return buf.toString(); |
| } |
| } |
| } |
| |
| /** |
| * Scan tag |
| */ |
| public Map<String,String> scanTag(Reader in) throws IOException { |
| Map<String,String> atts = new HashMap<String,String>(); |
| skipSpace(in); |
| while (c >= 0 && c != '>') { |
| if (c == '<') |
| throw new IOException("Missing '>' in tag"); |
| String att = scanIdentifier(in); |
| String val = ""; |
| skipSpace(in); |
| if (c == '=') { |
| int quote = -1; |
| c = in.read(); |
| skipSpace(in); |
| if ((c == '\'') || (c == '\"')) { |
| quote = c; |
| c = in.read(); |
| } |
| StringBuilder buf = new StringBuilder(); |
| while ((c > 0) && |
| (((quote < 0) && (c != ' ') && (c != '\t') && |
| (c != '\n') && (c != '\r') && (c != '>')) |
| || ((quote >= 0) && (c != quote)))) { |
| buf.append((char)c); |
| c = in.read(); |
| } |
| if (c == quote) { |
| c = in.read(); |
| } |
| skipSpace(in); |
| val = buf.toString(); |
| } |
| atts.put(att.toLowerCase(), val); |
| skipSpace(in); |
| } |
| return atts; |
| } |
| |
| /** |
| * Scan an html file for <mlet> tags |
| */ |
| public List<MLetContent> parse(URL url) throws IOException { |
| String mth = "parse"; |
| // Warning Messages |
| String requiresTypeWarning = "<arg type=... value=...> tag requires type parameter."; |
| String requiresValueWarning = "<arg type=... value=...> tag requires value parameter."; |
| String paramOutsideWarning = "<arg> tag outside <mlet> ... </mlet>."; |
| String requiresCodeWarning = "<mlet> tag requires either code or object parameter."; |
| String requiresJarsWarning = "<mlet> tag requires archive parameter."; |
| |
| URLConnection conn; |
| |
| conn = url.openConnection(); |
| Reader in = new BufferedReader(new InputStreamReader(conn.getInputStream(), |
| "UTF-8")); |
| |
| // The original URL may have been redirected - this |
| // sets it to whatever URL/codebase we ended up getting |
| // |
| url = conn.getURL(); |
| |
| List<MLetContent> mlets = new ArrayList<MLetContent>(); |
| Map<String,String> atts = null; |
| |
| List<String> types = new ArrayList<String>(); |
| List<String> values = new ArrayList<String>(); |
| |
| // debug("parse","*** Parsing " + url ); |
| while(true) { |
| c = in.read(); |
| if (c == -1) |
| break; |
| if (c == '<') { |
| c = in.read(); |
| if (c == '/') { |
| c = in.read(); |
| String nm = scanIdentifier(in); |
| if (c != '>') |
| throw new IOException("Missing '>' in tag"); |
| if (nm.equalsIgnoreCase(tag)) { |
| if (atts != null) { |
| mlets.add(new MLetContent(url, atts, types, values)); |
| } |
| atts = null; |
| types = new ArrayList<String>(); |
| values = new ArrayList<String>(); |
| } |
| } else { |
| String nm = scanIdentifier(in); |
| if (nm.equalsIgnoreCase("arg")) { |
| Map<String,String> t = scanTag(in); |
| String att = t.get("type"); |
| if (att == null) { |
| MLET_LOGGER.logp(Level.FINER, |
| MLetParser.class.getName(), |
| mth, requiresTypeWarning); |
| throw new IOException(requiresTypeWarning); |
| } else { |
| if (atts != null) { |
| types.add(att); |
| } else { |
| MLET_LOGGER.logp(Level.FINER, |
| MLetParser.class.getName(), |
| mth, paramOutsideWarning); |
| throw new IOException(paramOutsideWarning); |
| } |
| } |
| String val = t.get("value"); |
| if (val == null) { |
| MLET_LOGGER.logp(Level.FINER, |
| MLetParser.class.getName(), |
| mth, requiresValueWarning); |
| throw new IOException(requiresValueWarning); |
| } else { |
| if (atts != null) { |
| values.add(val); |
| } else { |
| MLET_LOGGER.logp(Level.FINER, |
| MLetParser.class.getName(), |
| mth, paramOutsideWarning); |
| throw new IOException(paramOutsideWarning); |
| } |
| } |
| } else { |
| if (nm.equalsIgnoreCase(tag)) { |
| atts = scanTag(in); |
| if (atts.get("code") == null && atts.get("object") == null) { |
| MLET_LOGGER.logp(Level.FINER, |
| MLetParser.class.getName(), |
| mth, requiresCodeWarning); |
| throw new IOException(requiresCodeWarning); |
| } |
| if (atts.get("archive") == null) { |
| MLET_LOGGER.logp(Level.FINER, |
| MLetParser.class.getName(), |
| mth, requiresJarsWarning); |
| throw new IOException(requiresJarsWarning); |
| } |
| } |
| } |
| } |
| } |
| } |
| in.close(); |
| return mlets; |
| } |
| |
| /** |
| * Parse the document pointed by the URL urlname |
| */ |
| public List<MLetContent> parseURL(String urlname) throws IOException { |
| // Parse the document |
| // |
| URL url; |
| if (urlname.indexOf(':') <= 1) { |
| String userDir = System.getProperty("user.dir"); |
| String prot; |
| if (userDir.charAt(0) == '/' || |
| userDir.charAt(0) == File.separatorChar) { |
| prot = "file:"; |
| } else { |
| prot = "file:/"; |
| } |
| url = |
| new URL(prot + userDir.replace(File.separatorChar, '/') + "/"); |
| url = new URL(url, urlname); |
| } else { |
| url = new URL(urlname); |
| } |
| // Return list of parsed MLets |
| // |
| return parse(url); |
| } |
| |
| } |
