Copyright (c) 2010 IBM Corporation and others.
This program and the accompanying materials
are made available under the terms of the Eclipse Public License 2.0
which accompanies this distribution, and is available at
https://www.eclipse.org/legal/epl-2.0/
SPDX-License-Identifier: EPL-2.0
Contributors:
    IBM Corporation - initial API and implementation
/*******************************************************************************
 * Copyright (c) 2010 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 * 
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.core.internal.filesystem.local.unix;

import org.eclipse.core.filesystem.EFS;
import org.eclipse.core.filesystem.provider.FileInfo;

This class mirrors relevant fields of native struct stat
and is used by JNI calls wrapping OS file related functions.
/**
 * This class mirrors relevant fields of native struct stat
 * and is used by JNI calls wrapping OS file related functions.
 */
public class StructStat {

	private static final boolean USE_MILLISECOND_RESOLUTION = Boolean.parseBoolean(System.getProperty("eclipse.filesystem.useNatives.modificationTimestampMillisecondsResolution", "true")); //$NON-NLS-1$ //$NON-NLS-2$

	public int st_mode;
	public long st_size;
	public long st_mtime;
	public long st_mtime_msec; // millisecond component of the file timestamp, filled on Linux systems
	public long st_flags; // Filled only on Mac OS X

	public FileInfo toFileInfo() {
		FileInfo info = new FileInfo();
		info.setExists(true);
		info.setLength(st_size);
		long lastModified = (st_mtime * 1_000);
		if (USE_MILLISECOND_RESOLUTION) {
			lastModified += st_mtime_msec;
		}
		info.setLastModified(lastModified);
		if ((st_mode & UnixFileFlags.S_IFMT) == UnixFileFlags.S_IFDIR)
			info.setDirectory(true);
		if ((st_flags & (UnixFileFlags.UF_IMMUTABLE | UnixFileFlags.SF_IMMUTABLE)) != 0)
			info.setAttribute(EFS.ATTRIBUTE_IMMUTABLE, true);
		if ((st_mode & UnixFileFlags.S_IRUSR) == 0) // Set to true in FileInfo constructor
			info.setAttribute(EFS.ATTRIBUTE_OWNER_READ, false);
		if ((st_mode & UnixFileFlags.S_IWUSR) == 0) // Set to true in FileInfo constructor
			info.setAttribute(EFS.ATTRIBUTE_OWNER_WRITE, false);
		if ((st_mode & UnixFileFlags.S_IXUSR) != 0)
			info.setAttribute(EFS.ATTRIBUTE_OWNER_EXECUTE, true);
		if ((st_mode & UnixFileFlags.S_IRGRP) != 0)
			info.setAttribute(EFS.ATTRIBUTE_GROUP_READ, true);
		if ((st_mode & UnixFileFlags.S_IWGRP) != 0)
			info.setAttribute(EFS.ATTRIBUTE_GROUP_WRITE, true);
		if ((st_mode & UnixFileFlags.S_IXGRP) != 0)
			info.setAttribute(EFS.ATTRIBUTE_GROUP_EXECUTE, true);
		if ((st_mode & UnixFileFlags.S_IROTH) != 0)
			info.setAttribute(EFS.ATTRIBUTE_OTHER_READ, true);
		if ((st_mode & UnixFileFlags.S_IWOTH) != 0)
			info.setAttribute(EFS.ATTRIBUTE_OTHER_WRITE, true);
		if ((st_mode & UnixFileFlags.S_IXOTH) != 0)
			info.setAttribute(EFS.ATTRIBUTE_OTHER_EXECUTE, true);
		return info;
	}

}