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/*
* Copyright 2000-2014 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.intellij.openapi.util.io.win32;
import com.intellij.openapi.diagnostic.Logger;
import com.intellij.openapi.util.SystemInfo;
import com.intellij.util.lang.UrlClassLoader;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
/**
* Do not use this class directly.
*
* @author Dmitry Avdeev
* @since 12.0
*/
public class IdeaWin32 {
private static final Logger LOG = Logger.getInstance("#com.intellij.openapi.util.io.win32.IdeaWin32");
private static final boolean DEBUG_ENABLED = LOG.isDebugEnabled();
private static final IdeaWin32 ourInstance;
static {
IdeaWin32 instance = null;
if (SystemInfo.isWin2kOrNewer) {
try {
UrlClassLoader.loadPlatformLibrary("IdeaWin32");
instance = new IdeaWin32();
LOG.info("Native filesystem for Windows is operational");
}
catch (Throwable t) {
LOG.error("Failed to initialize native filesystem for Windows", t);
}
}
ourInstance = instance;
}
public static boolean isAvailable() {
return ourInstance != null;
}
@NotNull
public static IdeaWin32 getInstance() {
if (!isAvailable()) {
throw new IllegalStateException("Native filesystem for Windows is not loaded");
}
return ourInstance;
}
private IdeaWin32() {
initIDs();
}
private static native void initIDs();
@Nullable
public FileInfo getInfo(@NotNull String path) {
path = path.replace('/', '\\');
if (DEBUG_ENABLED) {
long t = System.nanoTime();
FileInfo result = getInfo0(path);
t = (System.nanoTime() - t) / 1000;
LOG.debug("getInfo(" + path + "): " + t + " mks");
return result;
}
else {
return getInfo0(path);
}
}
@Nullable
public String resolveSymLink(@NotNull String path) {
path = path.replace('/', '\\');
if (DEBUG_ENABLED) {
long t = System.nanoTime();
String result = resolveSymLink0(path);
t = (System.nanoTime() - t) / 1000;
LOG.debug("resolveSymLink(" + path + "): " + t + " mks");
return result;
}
else {
return resolveSymLink0(path);
}
}
@Nullable
public FileInfo[] listChildren(@NotNull String path) {
path = path.replace('/', '\\');
if (DEBUG_ENABLED) {
long t = System.nanoTime();
FileInfo[] children = listChildren0(path);
t = (System.nanoTime() - t) / 1000;
LOG.debug("list(" + path + "): " + (children == null ? -1 : children.length) + " children, " + t + " mks");
return children;
}
else {
return listChildren0(path);
}
}
private native FileInfo getInfo0(String path);
private native String resolveSymLink0(String path);
private native FileInfo[] listChildren0(String path);
}
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