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Added SystemInfo and FileSystems to query system and file system information, respectively.

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This commit is contained in:
Adam Murdoch
2012-08-12 06:17:58 +10:00
parent 5f3761dd41
commit 3a58e27eeb
18 changed files with 612 additions and 327 deletions
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13
src/main/java/net/rubygrapefruit/platform/FileSystem.java Normal file
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@@ -0,0 +1,13 @@
package net.rubygrapefruit.platform;
import java.io.File;
public interface FileSystem {
File getMountPoint();
String getFileSystemType();
boolean isRemote();
String getDeviceName();
}

12
src/main/java/net/rubygrapefruit/platform/FileSystems.java Normal file
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@@ -0,0 +1,12 @@
package net.rubygrapefruit.platform;
import java.util.List;
public interface FileSystems extends NativeIntegration {
/**
* Returns the set of all file systems for the current machine.
*
* @throws NativeException On failure.
*/
List<FileSystem> getFileSystems() throws NativeException;
}

9
src/main/java/net/rubygrapefruit/platform/Main.java
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@@ -6,9 +6,18 @@ public class Main {
System.out.println("* OS: " + System.getProperty("os.name") + ' ' + System.getProperty("os.version") + ' ' + System.getProperty("os.arch"));
System.out.println("* JVM: " + System.getProperty("java.vm.vendor") + ' ' + System.getProperty("java.version"));
SystemInfo systemInfo = Native.get(SystemInfo.class);
System.out.println("* Kernel: " + systemInfo.getKernelName() + ' ' + systemInfo.getKernelVersion() + ' ' + systemInfo.getMachineArchitecture());
Process process = Native.get(Process.class);
System.out.println("* PID: " + process.getProcessId());
FileSystems fileSystems = Native.get(FileSystems.class);
System.out.println("* File systems: ");
for (FileSystem fileSystem : fileSystems.getFileSystems()) {
System.out.println(" * " + fileSystem.getMountPoint() + ' ' + fileSystem.getFileSystemType() + ' ' + fileSystem.getDeviceName() + (fileSystem.isRemote() ? " remote" : " local"));
}
TerminalAccess terminalAccess = Native.get(TerminalAccess.class);
boolean stdoutIsTerminal = terminalAccess.isTerminal(TerminalAccess.Output.Stdout);
boolean stderrIsTerminal = terminalAccess.isTerminal(TerminalAccess.Output.Stderr);

17
src/main/java/net/rubygrapefruit/platform/Native.java
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@@ -54,7 +54,6 @@ public class Native {
loaded = true;
}
}
}
static <T extends NativeIntegration> T get(Class<T> type) {
@@ -70,6 +69,17 @@ public class Native {
if (type.equals(TerminalAccess.class)) {
return type.cast(new TerminfoTerminalAccess());
}
if (type.equals(SystemInfo.class)) {
MutableSystemInfo systemInfo = new MutableSystemInfo();
FunctionResult result = new FunctionResult();
NativeLibraryFunctions.getSystemInfo(systemInfo, result);
if (result.isFailed()) {
throw new NativeException(String.format("Could not fetch system information: %s",
result.getMessage()));
}
System.out.println("=> CHARACTER ENCODING: " + systemInfo.characterEncoding);
return type.cast(systemInfo);
}
} else if (platform.isWindows()) {
if (type.equals(Process.class)) {
return type.cast(new DefaultProcess());
@@ -78,6 +88,11 @@ public class Native {
return type.cast(new WindowsTerminalAccess());
}
}
if (platform.isOsX()) {
if (type.equals(FileSystems.class)) {
return type.cast(new PosixFileSystems());
}
}
throw new UnsupportedOperationException(String.format("Cannot load unsupported native integration %s.",
type.getName()));
}

9
src/main/java/net/rubygrapefruit/platform/SystemInfo.java Normal file
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@@ -0,0 +1,9 @@
package net.rubygrapefruit.platform;
public interface SystemInfo extends NativeIntegration {
String getKernelName();
String getKernelVersion();
String getMachineArchitecture();
}

39
src/main/java/net/rubygrapefruit/platform/internal/DefaultFileSystem.java Normal file
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@@ -0,0 +1,39 @@
package net.rubygrapefruit.platform.internal;
import net.rubygrapefruit.platform.FileSystem;
import java.io.File;
public class DefaultFileSystem implements FileSystem {
private final File mountPoint;
private final String fileSystemType;
private final String deviceName;
private final boolean remote;
public DefaultFileSystem(File mountPoint, String fileSystemType, String deviceName, boolean remote) {
this.mountPoint = mountPoint;
this.fileSystemType = fileSystemType;
this.deviceName = deviceName;
this.remote = remote;
}
@Override
public String getDeviceName() {
return deviceName;
}
@Override
public File getMountPoint() {
return mountPoint;
}
@Override
public String getFileSystemType() {
return fileSystemType;
}
@Override
public boolean isRemote() {
return remote;
}
}

15
src/main/java/net/rubygrapefruit/platform/internal/FileSystemList.java Normal file
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@@ -0,0 +1,15 @@
package net.rubygrapefruit.platform.internal;
import net.rubygrapefruit.platform.FileSystem;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
public class FileSystemList {
public final List<FileSystem> fileSystems = new ArrayList<FileSystem>();
public void add(String mountPoint, String fileSystemName, String deviceName, boolean remote) {
fileSystems.add(new DefaultFileSystem(new File(mountPoint), fileSystemName, deviceName, remote));
}
}

25
src/main/java/net/rubygrapefruit/platform/internal/MutableSystemInfo.java Normal file
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@@ -0,0 +1,25 @@
package net.rubygrapefruit.platform.internal;
import net.rubygrapefruit.platform.SystemInfo;
public class MutableSystemInfo implements SystemInfo {
public String osName;
public String osVersion;
public String characterEncoding;
public String machineArchitecture;
@Override
public String getKernelName() {
return osName;
}
@Override
public String getKernelVersion() {
return osVersion;
}
@Override
public String getMachineArchitecture() {
return machineArchitecture;
}
}

185
src/main/java/net/rubygrapefruit/platform/internal/Platform.java
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@@ -1,89 +1,98 @@
package net.rubygrapefruit.platform.internal;
public abstract class Platform {
private static Platform platform;
public static Platform current() {
synchronized (Platform.class) {
if (platform == null) {
String osName = System.getProperty("os.name").toLowerCase();
if (osName.contains("windows")) {
platform = new Windows();
} else if (osName.contains("linux")) {
platform = new Linux();
} else if (osName.contains("os x")) {
platform = new OsX();
} else if (osName.contains("sunos")) {
platform = new Solaris();
} else {
platform = new Unsupported();
}
}
return platform;
}
}
public boolean isSupported() {
return true;
}
public boolean isPosix() {
return false;
}
public boolean isWindows() {
return false;
}
public abstract String getLibraryName();
private static class Windows extends Platform {
@Override
public boolean isWindows() {
return true;
}
@Override
public String getLibraryName() {
return "native-platform.dll";
}
}
private static abstract class Posix extends Platform {
@Override
public boolean isPosix() {
return true;
}
}
private static class Unix extends Posix {
@Override
public String getLibraryName() {
return "libnative-platform.so";
}
}
package net.rubygrapefruit.platform.internal;
private static class Linux extends Unix {
}
private static class Solaris extends Unix {
}
private static class OsX extends Posix {
@Override
public String getLibraryName() {
return "libnative-platform.dylib";
}
}
private static class Unsupported extends Platform {
@Override
public boolean isSupported() {
return false;
}
public String getLibraryName() {
throw new UnsupportedOperationException();
}
}
}
public abstract class Platform {
private static Platform platform;
public static Platform current() {
synchronized (Platform.class) {
if (platform == null) {
String osName = System.getProperty("os.name").toLowerCase();
if (osName.contains("windows")) {
platform = new Windows();
} else if (osName.contains("linux")) {
platform = new Linux();
} else if (osName.contains("os x")) {
platform = new OsX();
} else if (osName.contains("sunos")) {
platform = new Solaris();
} else {
platform = new Unsupported();
}
}
return platform;
}
}
public boolean isSupported() {
return true;
}
public boolean isPosix() {
return false;
}
public boolean isWindows() {
return false;
}
public boolean isOsX() {
return false;
}
public abstract String getLibraryName();
private static class Windows extends Platform {
@Override
public boolean isWindows() {
return true;
}
@Override
public String getLibraryName() {
return "native-platform.dll";
}
}
private static abstract class Posix extends Platform {
@Override
public boolean isPosix() {
return true;
}
}
private static class Unix extends Posix {
@Override
public String getLibraryName() {
return "libnative-platform.so";
}
}
private static class Linux extends Unix {
}
private static class Solaris extends Unix {
}
private static class OsX extends Posix {
@Override
public boolean isOsX() {
return true;
}
@Override
public String getLibraryName() {
return "libnative-platform.dylib";
}
}
private static class Unsupported extends Platform {
@Override
public boolean isSupported() {
return false;
}
public String getLibraryName() {
throw new UnsupportedOperationException();
}
}
}

21
src/main/java/net/rubygrapefruit/platform/internal/PosixFileSystems.java Normal file
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@@ -0,0 +1,21 @@
package net.rubygrapefruit.platform.internal;
import net.rubygrapefruit.platform.FileSystem;
import net.rubygrapefruit.platform.FileSystems;
import net.rubygrapefruit.platform.NativeException;
import net.rubygrapefruit.platform.internal.jni.PosixFileSystemFunctions;
import java.util.List;
public class PosixFileSystems implements FileSystems {
@Override
public List<FileSystem> getFileSystems() {
FunctionResult result = new FunctionResult();
FileSystemList fileSystems = new FileSystemList();
PosixFileSystemFunctions.listFileSystems(fileSystems, result);
if (result.isFailed()) {
throw new NativeException(String.format("Could not query file systems: %s", result.getMessage()));
}
return fileSystems.fileSystems;
}
}

7
src/main/java/net/rubygrapefruit/platform/internal/jni/NativeLibraryFunctions.java
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@@ -1,7 +1,12 @@
package net.rubygrapefruit.platform.internal.jni;
import net.rubygrapefruit.platform.internal.FunctionResult;
import net.rubygrapefruit.platform.internal.MutableSystemInfo;
public class NativeLibraryFunctions {
public static final int VERSION = 4;
public static final int VERSION = 5;
public static native int getVersion();
public static native void getSystemInfo(MutableSystemInfo systemInfo, FunctionResult result);
}

8
src/main/java/net/rubygrapefruit/platform/internal/jni/PosixFileSystemFunctions.java Normal file
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@@ -0,0 +1,8 @@
package net.rubygrapefruit.platform.internal.jni;
import net.rubygrapefruit.platform.internal.FileSystemList;
import net.rubygrapefruit.platform.internal.FunctionResult;
public class PosixFileSystemFunctions {
public static native void listFileSystems(FileSystemList fileSystems, FunctionResult result);
}