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- /*
- * Copyright (C) 2015, Ivan Motsch <ivan.motsch@bsiag.com>
- *
- * 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.util.io;
-
- import java.io.InputStream;
- import java.io.OutputStream;
-
- import org.eclipse.jgit.attributes.Attributes;
- import org.eclipse.jgit.lib.CoreConfig.EolStreamType;
- import org.eclipse.jgit.treewalk.TreeWalk.OperationType;
- import org.eclipse.jgit.treewalk.WorkingTreeOptions;
-
- /**
- * Utility used to create input and output stream wrappers for
- * {@link org.eclipse.jgit.lib.CoreConfig.EolStreamType}
- *
- * @since 4.3
- */
- public final class EolStreamTypeUtil {
- private static final boolean FORCE_EOL_LF_ON_CHECKOUT = false;
-
- private EolStreamTypeUtil() {
- }
-
- /**
- * Convenience method used to detect if CRLF conversion has been configured
- * using the
- * <ul>
- * <li>global repo options</li>
- * <li>global attributes</li>
- * <li>info attributes</li>
- * <li>working tree .gitattributes</li>
- *
- * @param op
- * is the
- * {@link org.eclipse.jgit.treewalk.TreeWalk.OperationType} of
- * the current traversal
- * @param options
- * are the {@link org.eclipse.jgit.lib.Config} options with key
- * {@link org.eclipse.jgit.treewalk.WorkingTreeOptions#KEY}
- * @param attrs
- * are the {@link org.eclipse.jgit.attributes.Attributes} of the
- * file for which the
- * {@link org.eclipse.jgit.lib.CoreConfig.EolStreamType} is to be
- * detected
- * @return the stream conversion
- * {@link org.eclipse.jgit.lib.CoreConfig.EolStreamType} to be
- * performed for the selected
- * {@link org.eclipse.jgit.treewalk.TreeWalk.OperationType}
- */
- public static EolStreamType detectStreamType(OperationType op,
- WorkingTreeOptions options, Attributes attrs) {
- switch (op) {
- case CHECKIN_OP:
- return checkInStreamType(options, attrs);
- case CHECKOUT_OP:
- return checkOutStreamType(options, attrs);
- default:
- throw new IllegalArgumentException("unknown OperationType " + op); //$NON-NLS-1$
- }
- }
-
- /**
- * Wrap the input stream depending on
- * {@link org.eclipse.jgit.lib.CoreConfig.EolStreamType}
- *
- * @param in
- * original stream
- * @param conversion
- * to be performed
- * @return the converted stream depending on
- * {@link org.eclipse.jgit.lib.CoreConfig.EolStreamType}
- */
- public static InputStream wrapInputStream(InputStream in,
- EolStreamType conversion) {
- switch (conversion) {
- case TEXT_CRLF:
- return new AutoCRLFInputStream(in, false);
- case TEXT_LF:
- return new AutoLFInputStream(in, false);
- case AUTO_CRLF:
- return new AutoCRLFInputStream(in, true);
- case AUTO_LF:
- return new AutoLFInputStream(in, true);
- default:
- return in;
- }
- }
-
- /**
- * Wrap the output stream depending on
- * {@link org.eclipse.jgit.lib.CoreConfig.EolStreamType}
- *
- * @param out
- * original stream
- * @param conversion
- * to be performed
- * @return the converted stream depending on
- * {@link org.eclipse.jgit.lib.CoreConfig.EolStreamType}
- */
- public static OutputStream wrapOutputStream(OutputStream out,
- EolStreamType conversion) {
- switch (conversion) {
- case TEXT_CRLF:
- return new AutoCRLFOutputStream(out, false);
- case AUTO_CRLF:
- return new AutoCRLFOutputStream(out, true);
- case TEXT_LF:
- return new AutoLFOutputStream(out, false);
- case AUTO_LF:
- return new AutoLFOutputStream(out, true);
- default:
- return out;
- }
- }
-
- private static EolStreamType checkInStreamType(WorkingTreeOptions options,
- Attributes attrs) {
- if (attrs.isUnset("text")) {//$NON-NLS-1$
- // "binary" or "-text" (which is included in the binary expansion)
- return EolStreamType.DIRECT;
- }
-
- // old git system
- if (attrs.isSet("crlf")) {//$NON-NLS-1$
- return EolStreamType.TEXT_LF;
- } else if (attrs.isUnset("crlf")) {//$NON-NLS-1$
- return EolStreamType.DIRECT;
- } else if ("input".equals(attrs.getValue("crlf"))) {//$NON-NLS-1$ //$NON-NLS-2$
- return EolStreamType.TEXT_LF;
- }
-
- // new git system
- String eol = attrs.getValue("eol"); //$NON-NLS-1$
- if (eol != null)
- // check-in is always normalized to LF
- return EolStreamType.TEXT_LF;
-
- if (attrs.isSet("text")) { //$NON-NLS-1$
- return EolStreamType.TEXT_LF;
- }
-
- if ("auto".equals(attrs.getValue("text"))) { //$NON-NLS-1$ //$NON-NLS-2$
- return EolStreamType.AUTO_LF;
- }
-
- switch (options.getAutoCRLF()) {
- case TRUE:
- case INPUT:
- return EolStreamType.AUTO_LF;
- case FALSE:
- return EolStreamType.DIRECT;
- }
-
- return EolStreamType.DIRECT;
- }
-
- private static EolStreamType checkOutStreamType(WorkingTreeOptions options,
- Attributes attrs) {
- if (attrs.isUnset("text")) {//$NON-NLS-1$
- // "binary" or "-text" (which is included in the binary expansion)
- return EolStreamType.DIRECT;
- }
-
- // old git system
- if (attrs.isSet("crlf")) {//$NON-NLS-1$
- return FORCE_EOL_LF_ON_CHECKOUT ? EolStreamType.TEXT_LF
- : EolStreamType.DIRECT;
- } else if (attrs.isUnset("crlf")) {//$NON-NLS-1$
- return EolStreamType.DIRECT;
- } else if ("input".equals(attrs.getValue("crlf"))) {//$NON-NLS-1$ //$NON-NLS-2$
- return EolStreamType.DIRECT;
- }
-
- // new git system
- String eol = attrs.getValue("eol"); //$NON-NLS-1$
- if (eol != null && "crlf".equals(eol)) //$NON-NLS-1$
- return EolStreamType.TEXT_CRLF;
- if (eol != null && "lf".equals(eol)) //$NON-NLS-1$
- return FORCE_EOL_LF_ON_CHECKOUT ? EolStreamType.TEXT_LF
- : EolStreamType.DIRECT;
-
- if (attrs.isSet("text")) { //$NON-NLS-1$
- switch (options.getAutoCRLF()) {
- case TRUE:
- return EolStreamType.TEXT_CRLF;
- default:
- // no decision
- }
- switch (options.getEOL()) {
- case CRLF:
- return EolStreamType.TEXT_CRLF;
- case LF:
- return FORCE_EOL_LF_ON_CHECKOUT ? EolStreamType.TEXT_LF
- : EolStreamType.DIRECT;
- case NATIVE:
- default:
- return EolStreamType.DIRECT;
- }
- }
-
- if ("auto".equals(attrs.getValue("text"))) { //$NON-NLS-1$ //$NON-NLS-2$
- switch (options.getAutoCRLF()) {
- case TRUE:
- return EolStreamType.AUTO_CRLF;
- default:
- // no decision
- }
- switch (options.getEOL()) {
- case CRLF:
- return EolStreamType.AUTO_CRLF;
- case LF:
- return FORCE_EOL_LF_ON_CHECKOUT ? EolStreamType.TEXT_LF
- : EolStreamType.DIRECT;
- case NATIVE:
- default:
- return EolStreamType.DIRECT;
- }
- }
-
- switch (options.getAutoCRLF()) {
- case TRUE:
- return EolStreamType.AUTO_CRLF;
- default:
- // no decision
- }
-
- return EolStreamType.DIRECT;
- }
-
- }
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