/* * Copyright (c) 2004, 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 sun.jvmstat.perfdata.monitor;import java.net.*;import java.io.*;import java.util.*;import java.util.regex.*;/** * Class for parsing alias files. File format is expected to follow * the following syntax: * * alias name [alias]* * * Java style comments can occur anywhere within the file. * @author Brian Doherty * @since 1.5 */public class AliasFileParser { private static final String ALIAS = "alias"; private static final boolean DEBUG = false; // other variables private URL inputfile; private StreamTokenizer st; private Token currentToken; AliasFileParser(URL inputfile) { this.inputfile = inputfile; } // value class to hold StreamTokenizer token values private class Token { public String sval; public int ttype; public Token(int ttype, String sval) { this.ttype = ttype; this.sval = sval; } } private void logln(String s) { if (DEBUG) { System.err.println(s); } } /** * method to get the next token as a Token type */ private void nextToken() throws IOException { st.nextToken(); currentToken = new Token(st.ttype, st.sval); logln("Read token: type = " + currentToken.ttype + " string = " + currentToken.sval); } /** * method to match the current Token to a specified token type and * value Throws a SyntaxException if token doesn't match. */ private void match(int ttype, String token) throws IOException, SyntaxException { if ((currentToken.ttype == ttype) && (currentToken.sval.compareTo(token) == 0)) { logln("matched type: " + ttype + " and token = " + currentToken.sval); nextToken(); } else { throw new SyntaxException(st.lineno()); } } /* * method to match the current Token to a specified token type. * Throws a SyntaxException if token doesn't match. */ private void match(int ttype) throws IOException, SyntaxException { if (currentToken.ttype == ttype) { logln("matched type: " + ttype + ", token = " + currentToken.sval); nextToken(); } else { throw new SyntaxException(st.lineno()); } } private void match(String token) throws IOException, SyntaxException { match(StreamTokenizer.TT_WORD, token); } /** * method to parse the given input file. */ public void parse(Map<String, ArrayList<String>> map) throws SyntaxException, IOException { if (inputfile == null) { return; } BufferedReader r = new BufferedReader( new InputStreamReader(inputfile.openStream())); st = new StreamTokenizer(r); // allow both forms of commenting styles st.slashSlashComments(true); st.slashStarComments(true); st.wordChars('_','_'); nextToken(); while (currentToken.ttype != StreamTokenizer.TT_EOF) { // look for the start symbol if ((currentToken.ttype != StreamTokenizer.TT_WORD) || (currentToken.sval.compareTo(ALIAS) != 0)) { nextToken(); continue; } match(ALIAS); String name = currentToken.sval; match(StreamTokenizer.TT_WORD); ArrayList<String> aliases = new ArrayList<String>(); do { aliases.add(currentToken.sval); match(StreamTokenizer.TT_WORD); } while ((currentToken.ttype != StreamTokenizer.TT_EOF) && (currentToken.sval.compareTo(ALIAS) != 0)); logln("adding map entry for " + name + " values = " + aliases); map.put(name, aliases); } }}
/*
* Copyright (c) 2004, 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 sun.jvmstat.perfdata.monitor;
import java.net.*;
import java.io.*;
import java.util.*;
import java.util.regex.*;
/**
* Class for parsing alias files. File format is expected to follow
* the following syntax:
*
* alias name [alias]*
*
* Java style comments can occur anywhere within the file.
* @author Brian Doherty
* @since 1.5
*/
public class AliasFileParser {
private static final String ALIAS = "alias";
private static final boolean DEBUG = false;
// other variables
private URL inputfile;
private StreamTokenizer st;
private Token currentToken;
AliasFileParser(URL inputfile) {
this.inputfile = inputfile;
}
// value class to hold StreamTokenizer token values
private class Token {
public String sval;
public int ttype;
public Token(int ttype, String sval) {
this.ttype = ttype;
this.sval = sval;
}
}
private void logln(String s) {
if (DEBUG) {
System.err.println(s);
}
}
/**
* method to get the next token as a Token type
*/
private void nextToken() throws IOException {
st.nextToken();
currentToken = new Token(st.ttype, st.sval);
logln("Read token: type = " + currentToken.ttype
+ " string = " + currentToken.sval);
}
/**
* method to match the current Token to a specified token type and
* value Throws a SyntaxException if token doesn't match.
*/
private void match(int ttype, String token)
throws IOException, SyntaxException {
if ((currentToken.ttype == ttype)
&& (currentToken.sval.compareTo(token) == 0)) {
logln("matched type: " + ttype + " and token = "
+ currentToken.sval);
nextToken();
} else {
throw new SyntaxException(st.lineno());
}
}
/*
* method to match the current Token to a specified token type.
* Throws a SyntaxException if token doesn't match.
*/
private void match(int ttype) throws IOException, SyntaxException {
if (currentToken.ttype == ttype) {
logln("matched type: " + ttype + ", token = " + currentToken.sval);
nextToken();
} else {
throw new SyntaxException(st.lineno());
}
}
private void match(String token) throws IOException, SyntaxException {
match(StreamTokenizer.TT_WORD, token);
}
/**
* method to parse the given input file.
*/
public void parse(Map<String, ArrayList<String>> map) throws SyntaxException, IOException {
if (inputfile == null) {
return;
}
BufferedReader r = new BufferedReader(
new InputStreamReader(inputfile.openStream()));
st = new StreamTokenizer(r);
// allow both forms of commenting styles
st.slashSlashComments(true);
st.slashStarComments(true);
st.wordChars('_','_');
nextToken();
while (currentToken.ttype != StreamTokenizer.TT_EOF) {
// look for the start symbol
if ((currentToken.ttype != StreamTokenizer.TT_WORD)
|| (currentToken.sval.compareTo(ALIAS) != 0)) {
nextToken();
continue;
}
match(ALIAS);
String name = currentToken.sval;
match(StreamTokenizer.TT_WORD);
ArrayList<String> aliases = new ArrayList<String>();
do {
aliases.add(currentToken.sval);
match(StreamTokenizer.TT_WORD);
} while ((currentToken.ttype != StreamTokenizer.TT_EOF)
&& (currentToken.sval.compareTo(ALIAS) != 0));
logln("adding map entry for " + name + " values = " + aliases);
map.put(name, aliases);
}
}
}