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/*
* Copyright (C) 2010, Red Hat Inc.
* and other copyright owners as documented in the project's IP log.
*
* This program and the accompanying materials are made available
* under the terms of the Eclipse Distribution License v1.0 which
* accompanies this distribution, is reproduced below, and is
* available at http://www.eclipse.org/org/documents/edl-v10.php
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* - Neither the name of the Eclipse Foundation, Inc. nor the
* names of its contributors may be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.eclipse.jgit.attributes;
import static java.nio.charset.StandardCharsets.UTF_8;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
/**
* Represents a bundle of attributes inherited from a base directory.
*
* This class is not thread safe, it maintains state about the last match.
*
* @since 3.7
*/
public class AttributesNode {
/** The rules that have been parsed into this node. */
private final List<AttributesRule> rules;
/**
* Create an empty ignore node with no rules.
*/
public AttributesNode() {
rules = new ArrayList<>();
}
/**
* Create an ignore node with given rules.
*
* @param rules
* list of rules.
*/
public AttributesNode(List<AttributesRule> rules) {
this.rules = rules;
}
/**
* Parse files according to gitattribute standards.
*
* @param in
* input stream holding the standard ignore format. The caller is
* responsible for closing the stream.
* @throws java.io.IOException
* Error thrown when reading an ignore file.
*/
public void parse(InputStream in) throws IOException {
BufferedReader br = asReader(in);
String txt;
while ((txt = br.readLine()) != null) {
txt = txt.trim();
if (txt.length() > 0 && !txt.startsWith("#") /* Comments *///$NON-NLS-1$
&& !txt.startsWith("!") /* Negative pattern forbidden for attributes */) { //$NON-NLS-1$
int patternEndSpace = txt.indexOf(' ');
int patternEndTab = txt.indexOf('\t');
final int patternEnd;
if (patternEndSpace == -1)
patternEnd = patternEndTab;
else if (patternEndTab == -1)
patternEnd = patternEndSpace;
else
patternEnd = Math.min(patternEndSpace, patternEndTab);
if (patternEnd > -1)
rules.add(new AttributesRule(txt.substring(0, patternEnd),
txt.substring(patternEnd + 1).trim()));
}
}
}
private static BufferedReader asReader(InputStream in) {
return new BufferedReader(new InputStreamReader(in, UTF_8));
}
/**
* Getter for the field <code>rules</code>.
*
* @return list of all ignore rules held by this node
*/
public List<AttributesRule> getRules() {
return Collections.unmodifiableList(rules);
}
}
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