author | Dan Labrecque <dan.labrecque@oracle.com> |
Thu, 24 May 2012 04:16:47 -0400 | |
changeset 827 | 0944d8c0158b |
permissions | -rw-r--r-- |
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/* |
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* CDDL HEADER START |
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* |
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* The contents of this file are subject to the terms of the |
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* Common Development and Distribution License (the "License"). |
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* You may not use this file except in compliance with the License. |
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* |
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE |
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* or http://www.opensolaris.org/os/licensing. |
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* See the License for the specific language governing permissions |
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* and limitations under the License. |
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* |
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* When distributing Covered Code, include this CDDL HEADER in each |
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE. |
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* If applicable, add the following below this CDDL HEADER, with the |
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* fields enclosed by brackets "[]" replaced with your own identifying |
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* information: Portions Copyright [yyyy] [name of copyright owner] |
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* |
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* CDDL HEADER END |
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*/ |
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|
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/* |
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* Copyright (c) 2009, 2012, Oracle and/or its affiliates. All rights reserved. |
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*/ |
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package com.oracle.solaris.vp.util.misc; |
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import java.io.*; |
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import java.util.*; |
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|
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/** |
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* The {@code KeyValueWriter} class is a {@link ConfigWriter} that writes |
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* key/value lines. |
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*/ |
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public class KeyValueWriter extends ConfigWriter |
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{ |
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private String regex_; |
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private String separator_; |
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private Map<String, String> defaults_; |
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protected KeyValueWriter(String regex, String separator, |
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Map<String, String> defaults) |
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{ |
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regex_ = regex; |
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separator_ = separator; |
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defaults_ = new HashMap<String, String>(defaults); |
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} |
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private void writeLine(BufferedWriter writer, String key, String value) |
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throws IOException |
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{ |
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writer.write(key + separator_ + value); |
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writer.newLine(); |
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} |
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@Override |
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protected boolean processLine(BufferedWriter writer, String line) |
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throws IOException |
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{ |
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String pieces[] = line.split(regex_, 2); |
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/* |
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* If there is a matching line, replace the first occurance. |
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* Eliminate subsequent occurances of a match. |
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* Pass non-matching lines through without modification. |
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*/ |
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if (pieces.length != 2 || !defaults_.containsKey(pieces[0])) |
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return (false); |
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String replacement = defaults_.get(pieces[0]); |
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if (replacement == null) |
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return (true); |
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writeLine(writer, pieces[0], replacement); |
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defaults_.put(pieces[0], null); |
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return (true); |
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} |
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@Override |
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protected void processEOF(BufferedWriter writer) |
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throws IOException |
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{ |
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/* |
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* If we haven't yet written any pairs to the file, do so now. |
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*/ |
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for (Map.Entry<String, String> entries : defaults_.entrySet()) |
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if (entries.getValue() != null) |
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writeLine(writer, entries.getKey(), entries.getValue()); |
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} |
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} |