/
Ops.java
7785 lines (7259 loc) · 360 KB
/
Ops.java
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package org.raku.nqp.runtime;
import com.sun.jna.Memory;
import com.sun.jna.platform.win32.Kernel32;
import com.sun.jna.platform.win32.WinError;
import com.sun.jna.platform.win32.WinNT;
import com.sun.jna.platform.win32.WinNT.HANDLE;
import com.sun.jna.platform.win32.WinBase;
import com.sun.jna.platform.win32.WinBase.FILETIME;
import com.sun.jna.platform.win32.WinBase.FILE_BASIC_INFO;
import com.sun.jna.platform.win32.WinDef.DWORD;
import com.sun.management.OperatingSystemMXBean;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.lang.Character;
import java.lang.invoke.MethodHandle;
import java.lang.invoke.MethodHandles;
import java.lang.invoke.MethodType;
import java.lang.management.ManagementFactory;
import java.lang.reflect.Field;
import java.lang.ProcessHandle;
import java.lang.ProcessBuilder.Redirect;
import java.lang.Runtime;
import java.lang.Thread;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.math.RoundingMode;
import java.net.InetAddress;
import java.nio.channels.Channels;
import java.nio.channels.ReadableByteChannel;
import java.nio.ByteBuffer;
import java.nio.BufferUnderflowException;
import java.nio.CharBuffer;
import java.nio.charset.Charset;
import java.nio.charset.CharsetEncoder;
import java.nio.charset.CharacterCodingException;
import java.nio.charset.CoderResult;
import java.nio.file.DirectoryStream;
import java.nio.file.Files;
import java.nio.file.LinkOption;
import java.nio.file.NotLinkException;
import java.nio.file.NoSuchFileException;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.StandardCopyOption;
import java.nio.file.attribute.BasicFileAttributes;
import java.nio.file.attribute.FileTime;
import java.nio.file.attribute.PosixFilePermission;
import java.nio.file.attribute.PosixFilePermissions;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.text.Normalizer;
import java.util.AbstractMap;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Collections;
import java.util.EnumSet;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.Set;
import java.util.TimerTask;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.TimeUnit;
import org.raku.nqp.io.FileHandle;
import org.raku.nqp.io.IIOBindable;
import org.raku.nqp.io.IIOCancelable;
import org.raku.nqp.io.IIOClosable;
import org.raku.nqp.io.IIOLockable;
import org.raku.nqp.io.IIOSeekable;
import org.raku.nqp.io.IIOSyncReadable;
import org.raku.nqp.io.IIOSyncWritable;
import org.raku.nqp.io.IIOPossiblyTTY;
import org.raku.nqp.io.SyncProcessHandle;
import org.raku.nqp.io.ProcessChannel;
import org.raku.nqp.io.ServerSocketHandle;
import org.raku.nqp.io.SocketHandle;
import org.raku.nqp.io.StandardReadHandle;
import org.raku.nqp.io.StandardWriteHandle;
import org.raku.nqp.jast2bc.JASTCompiler;
import org.raku.nqp.sixmodel.BoolificationSpec;
import org.raku.nqp.sixmodel.ContainerConfigurer;
import org.raku.nqp.sixmodel.ContainerSpec;
import org.raku.nqp.sixmodel.InvocationSpec;
import org.raku.nqp.sixmodel.NativeRefContainerSpec;
import org.raku.nqp.sixmodel.ParameterizedType;
import org.raku.nqp.sixmodel.ParametricType;
import org.raku.nqp.sixmodel.REPRRegistry;
import org.raku.nqp.sixmodel.STable;
import org.raku.nqp.sixmodel.SerializationContext;
import org.raku.nqp.sixmodel.SerializationReader;
import org.raku.nqp.sixmodel.SerializationWriter;
import org.raku.nqp.sixmodel.SixModelObject;
import org.raku.nqp.sixmodel.StorageSpec;
import org.raku.nqp.sixmodel.TypeObject;
import org.raku.nqp.sixmodel.reprs.AsyncTaskInstance;
import org.raku.nqp.sixmodel.reprs.CallCaptureInstance;
import org.raku.nqp.sixmodel.reprs.ConcBlockingQueueInstance;
import org.raku.nqp.sixmodel.reprs.ConditionVariable;
import org.raku.nqp.sixmodel.reprs.ConditionVariableInstance;
import org.raku.nqp.sixmodel.reprs.ContextRef;
import org.raku.nqp.sixmodel.reprs.ContextRefInstance;
import org.raku.nqp.sixmodel.reprs.DecoderInstance;
import org.raku.nqp.sixmodel.reprs.IOHandleInstance;
import org.raku.nqp.sixmodel.reprs.MultiCacheInstance;
import org.raku.nqp.sixmodel.reprs.NFA;
import org.raku.nqp.sixmodel.reprs.NFAInstance;
import org.raku.nqp.sixmodel.reprs.NFAStateInfo;
import org.raku.nqp.sixmodel.reprs.NativeRefInstanceAttribute;
import org.raku.nqp.sixmodel.reprs.NativeRefInstanceIntLex;
import org.raku.nqp.sixmodel.reprs.NativeRefInstanceNumLex;
import org.raku.nqp.sixmodel.reprs.NativeRefInstancePositional;
import org.raku.nqp.sixmodel.reprs.NativeRefInstanceMultidim;
import org.raku.nqp.sixmodel.reprs.NativeRefInstanceStrLex;
import org.raku.nqp.sixmodel.reprs.NativeRefREPRData;
import org.raku.nqp.sixmodel.reprs.P6bigintInstance;
import org.raku.nqp.sixmodel.reprs.P6int;
import org.raku.nqp.sixmodel.reprs.P6str;
import org.raku.nqp.sixmodel.reprs.P6num;
import org.raku.nqp.sixmodel.reprs.P6OpaqueREPRData;
import org.raku.nqp.sixmodel.reprs.P6OpaqueBaseInstance;
import org.raku.nqp.sixmodel.reprs.ReentrantMutexInstance;
import org.raku.nqp.sixmodel.reprs.SCRefInstance;
import org.raku.nqp.sixmodel.reprs.SemaphoreInstance;
import org.raku.nqp.sixmodel.reprs.VMArray;
import org.raku.nqp.sixmodel.reprs.VMArrayInstance;
import org.raku.nqp.sixmodel.reprs.VMArrayInstance_i;
import org.raku.nqp.sixmodel.reprs.VMArrayInstance_i16;
import org.raku.nqp.sixmodel.reprs.VMArrayInstance_i32;
import org.raku.nqp.sixmodel.reprs.VMArrayInstance_i8;
import org.raku.nqp.sixmodel.reprs.VMArrayInstance_u16;
import org.raku.nqp.sixmodel.reprs.VMArrayInstance_u32;
import org.raku.nqp.sixmodel.reprs.VMArrayInstance_u8;
import org.raku.nqp.sixmodel.reprs.VMExceptionInstance;
import org.raku.nqp.sixmodel.reprs.VMHash;
import org.raku.nqp.sixmodel.reprs.VMHashInstance;
import org.raku.nqp.sixmodel.reprs.VMIterInstance;
import org.raku.nqp.sixmodel.reprs.VMNull;
import org.raku.nqp.sixmodel.reprs.VMNullInstance;
import org.raku.nqp.sixmodel.reprs.VMThreadInstance;
import sun.misc.Unsafe;
/**
* Contains complex operations that are more involved than the simple ops that the
* JVM makes available.
*/
public final class Ops {
/**
* Temporary workaround to avoid warnings about 'illegal reflective access'
* (taken from https://stackoverflow.com/a/46458447).
* Please note that this is needed for Rakudo, too.
* Once something else (e.g. VarHandle) is used instead
* of sun.misc.Unsafe this workaround can be removed.
*/
public static void disableWarning() {
try {
Field theUnsafe = Unsafe.class.getDeclaredField("theUnsafe");
theUnsafe.setAccessible(true);
Unsafe u = (Unsafe)theUnsafe.get(null);
Class cls = Class.forName("jdk.internal.module.IllegalAccessLogger");
Field logger = cls.getDeclaredField("logger");
u.putObjectVolatile(cls, u.staticFieldOffset(logger), null);
}
catch (Exception e) {
// ignore (that's the raison d'être for this method)
}
}
private static SixModelObject theVMNull = null;
/* I/O opcodes */
public static String print(String v, ThreadContext tc) {
tc.gc.out.print(v);
return v;
}
public static String say(String v, ThreadContext tc) {
tc.gc.out.println(v);
return v;
}
public static final int STAT_EXISTS = 0;
public static final int STAT_FILESIZE = 1;
public static final int STAT_ISDIR = 2;
public static final int STAT_ISREG = 3;
public static final int STAT_ISDEV = 4;
public static final int STAT_CREATETIME = 5;
public static final int STAT_ACCESSTIME = 6;
public static final int STAT_MODIFYTIME = 7;
public static final int STAT_CHANGETIME = 8;
public static final int STAT_BACKUPTIME = 9;
public static final int STAT_UID = 10;
public static final int STAT_GID = 11;
public static final int STAT_ISLNK = 12;
public static final int STAT_PLATFORM_DEV = -1;
public static final int STAT_PLATFORM_INODE = -2;
public static final int STAT_PLATFORM_MODE = -3;
public static final int STAT_PLATFORM_NLINKS = -4;
public static final int STAT_PLATFORM_DEVTYPE = -5;
public static final int STAT_PLATFORM_BLOCKSIZE = -6;
public static final int STAT_PLATFORM_BLOCKS = -7;
public static final int MAX_GRAPHEMES = 2147483647;
private static long windows_native_changetime(String filename) {
HANDLE hFile = null;
try {
hFile = Kernel32.INSTANCE.CreateFile(filename, WinNT.GENERIC_READ, WinNT.FILE_SHARE_READ, new WinBase.SECURITY_ATTRIBUTES(), WinNT.OPEN_EXISTING, WinNT.FILE_ATTRIBUTE_NORMAL, null);
if (Kernel32.INSTANCE.GetLastError() != WinError.ERROR_SUCCESS) {
return -1;
}
Memory p = new Memory(FILE_BASIC_INFO.sizeOf());
if (Kernel32.INSTANCE.GetFileInformationByHandleEx(hFile, WinBase.FileBasicInfo, p, new DWORD(p.size()))) {
FILE_BASIC_INFO fbi = new FILE_BASIC_INFO(p);
return new FILETIME(fbi.ChangeTime).toTime() / 1000;
} else {
return -1;
}
} catch (Exception e) {
return -1;
} finally {
if (hFile != null) {
Kernel32.INSTANCE.CloseHandle(hFile);
}
}
}
public static long stat(String filename, long status) {
return stat_internal(filename, status);
}
public static long lstat(String filename, long status) {
return stat_internal(filename, status, LinkOption.NOFOLLOW_LINKS);
}
public static long stat_internal(String filename, long status, LinkOption ... linkOption) {
long rval = -1;
switch ((int) status) {
case STAT_EXISTS:
rval = Files.exists(Paths.get(filename), linkOption) ? 1 : 0;
break;
case STAT_FILESIZE:
try {
rval = Files.readAttributes(Paths.get(filename), BasicFileAttributes.class, linkOption).size();
} catch (Exception e) {
rval = -1;
}
break;
case STAT_ISDIR:
try {
rval = (Boolean) Files.getAttribute(Paths.get(filename), "basic:isDirectory", linkOption) ? 1 : 0;
} catch(NoSuchFileException e) {
rval = 0;
} catch (Exception e) {
rval = -1;
}
break;
case STAT_ISREG:
try {
rval = (Boolean) Files.getAttribute(Paths.get(filename), "basic:isRegularFile", linkOption) ? 1 : 0;
} catch(NoSuchFileException e) {
rval = 0;
} catch (Exception e) {
rval = -1;
}
break;
case STAT_ISDEV:
try {
rval = (Boolean) Files.getAttribute(Paths.get(filename), "basic:isOther", linkOption) ? 1 : 0;
} catch(NoSuchFileException e) {
rval = 0;
} catch (Exception e) {
rval = -1;
}
break;
case STAT_CREATETIME:
try {
rval = ((Number) Files.getAttribute(Paths.get(filename), "basic:creationTime", linkOption)).longValue();
} catch (Exception e) {
rval = -1;
}
break;
case STAT_ACCESSTIME:
try {
rval = ((FileTime) Files.getAttribute(Paths.get(filename), "basic:lastAccessTime", linkOption)).to(TimeUnit.SECONDS);
} catch (Exception e) {
rval = -1;
}
break;
case STAT_MODIFYTIME:
try {
rval = ((FileTime) Files.getAttribute(Paths.get(filename), "basic:lastModifiedTime", linkOption)).to(TimeUnit.SECONDS);
} catch (Exception e) {
rval = -1;
}
break;
case STAT_CHANGETIME:
try {
rval = ((FileTime) Files.getAttribute(Paths.get(filename), "unix:ctime", linkOption)).to(TimeUnit.SECONDS);
} catch (UnsupportedOperationException oue) {
if (System.getProperty("os.name").toLowerCase().indexOf("win") >= 0) {
rval = windows_native_changetime(filename);
} else {
rval = -1;
}
} catch (Exception e) {
rval = -1;
}
break;
case STAT_BACKUPTIME:
rval = -1;
break;
case STAT_UID:
try {
rval = ((Number) Files.getAttribute(Paths.get(filename), "unix:uid", linkOption)).longValue();
} catch (Exception e) {
rval = -1;
}
break;
case STAT_GID:
try {
rval = ((Number) Files.getAttribute(Paths.get(filename), "unix:gid", linkOption)).longValue();
} catch (Exception e) {
rval = -1;
}
break;
case STAT_ISLNK:
try {
rval = (Boolean) Files.getAttribute(Paths.get(filename), "basic:isSymbolicLink", LinkOption.NOFOLLOW_LINKS) ? 1 : 0;
} catch(NoSuchFileException e) {
rval = 0;
} catch (Exception e) {
rval = -1;
}
break;
case STAT_PLATFORM_DEV:
try {
rval = ((Number) Files.getAttribute(Paths.get(filename), "unix:dev", linkOption)).longValue();
} catch (Exception e) {
rval = -1;
}
break;
case STAT_PLATFORM_INODE:
try {
rval = ((Number) Files.getAttribute(Paths.get(filename), "unix:ino", linkOption)).longValue();
} catch (Exception e) {
rval = -1;
}
break;
case STAT_PLATFORM_MODE:
try {
rval = ((Number) Files.getAttribute(Paths.get(filename), "unix:mode", linkOption)).longValue();
} catch (Exception e) {
rval = -1;
}
break;
case STAT_PLATFORM_NLINKS:
try {
rval = ((Number) Files.getAttribute(Paths.get(filename), "unix:nlink", linkOption)).longValue();
} catch (Exception e) {
rval = -1;
}
break;
case STAT_PLATFORM_DEVTYPE:
try {
rval = ((Number) Files.getAttribute(Paths.get(filename), "unix:rdev", linkOption)).longValue();
} catch (Exception e) {
rval = -1;
}
break;
case STAT_PLATFORM_BLOCKSIZE:
throw new UnsupportedOperationException("STAT_PLATFORM_BLOCKSIZE not supported");
case STAT_PLATFORM_BLOCKS:
throw new UnsupportedOperationException("STAT_PLATFORM_BLOCKS not supported");
default:
break;
}
return rval;
}
public static double stat_time(String filename, long status) {
return stat_time_internal(filename, status);
}
public static double lstat_time(String filename, long status) {
return stat_time_internal(filename, status, LinkOption.NOFOLLOW_LINKS);
}
protected static double stat_time_internal(String filename, long status, LinkOption... linkOption) {
String attrName;
switch ((int) status) {
case STAT_CREATETIME:
attrName = "basic:creationTime";
break;
case STAT_ACCESSTIME:
attrName = "basic:lastAccessTime";
break;
case STAT_MODIFYTIME:
attrName = "basic:lastModifiedTime";
break;
case STAT_CHANGETIME:
attrName = "unix:ctime";
break;
default:
return -1;
}
try {
FileTime ft = ((FileTime) Files.getAttribute(Paths.get(filename), attrName, linkOption));
return ft.to(TimeUnit.NANOSECONDS) / 1000000000;
} catch (UnsupportedOperationException oue) {
if ((int) status == STAT_CHANGETIME && System.getProperty("os.name").toLowerCase().indexOf("win") >= 0) {
return windows_native_changetime(filename);
} else {
return -1;
}
} catch (Exception e) {
return -1;
}
}
public static SixModelObject open(String path, String mode, ThreadContext tc) {
SixModelObject IOType = tc.curFrame.codeRef.staticInfo.compUnit.hllConfig.ioType;
IOHandleInstance h = (IOHandleInstance)IOType.st.REPR.allocate(tc, IOType.st);
h.handle = new FileHandle(tc, path, mode);
return h;
}
public static SixModelObject socket(long listener, ThreadContext tc) {
SixModelObject IOType = tc.curFrame.codeRef.staticInfo.compUnit.hllConfig.ioType;
IOHandleInstance h = (IOHandleInstance)IOType.st.REPR.allocate(tc, IOType.st);
if (listener == 0) {
h.handle = new SocketHandle(tc);
} else if (listener > 0) {
h.handle = new ServerSocketHandle(tc);
} else {
ExceptionHandling.dieInternal(tc,
"Socket handle does not support a negative listener value");
}
return h;
}
public static final int SOCKET_FAMILY_UNSPEC = 0;
public static final int SOCKET_FAMILY_INET = 1;
public static final int SOCKET_FAMILY_INET6 = 2;
public static final int SOCKET_FAMILY_UNIX = 3;
public static SixModelObject connect(SixModelObject obj, String host, long port, long family, ThreadContext tc) {
IOHandleInstance h = (IOHandleInstance)obj;
switch ((int) family) {
case SOCKET_FAMILY_UNSPEC:
case SOCKET_FAMILY_INET:
case SOCKET_FAMILY_INET6:
if (h.handle instanceof SocketHandle) {
((SocketHandle)h.handle).connect(tc, host, (int) port);
} else {
ExceptionHandling.dieInternal(tc,
"This handle does not support connect");
}
break;
case SOCKET_FAMILY_UNIX:
ExceptionHandling.dieInternal(tc,
"UNIX sockets are not supported on the JVM");
break;
default:
ExceptionHandling.dieInternal(tc,
"Unsupported socket family: " + Long.toString(family));
break;
}
return obj;
}
public static SixModelObject bindsock(SixModelObject obj, String host, long port, long family, long backlog, ThreadContext tc) {
IOHandleInstance h = (IOHandleInstance)obj;
switch ((int) family) {
case SOCKET_FAMILY_UNSPEC:
case SOCKET_FAMILY_INET:
case SOCKET_FAMILY_INET6:
if (h.handle instanceof IIOBindable) {
((IIOBindable)h.handle).bind(tc, host, (int) port, (int) backlog);
} else {
ExceptionHandling.dieInternal(tc,
"This handle does not support bind");
}
break;
case SOCKET_FAMILY_UNIX:
ExceptionHandling.dieInternal(tc,
"UNIX sockets are not supported on the JVM");
break;
default:
ExceptionHandling.dieInternal(tc,
"Unsupported socket family: " + Long.toString(family));
break;
}
return obj;
}
public static SixModelObject accept(SixModelObject obj, ThreadContext tc) {
IOHandleInstance listener = (IOHandleInstance)obj;
if (listener.handle instanceof ServerSocketHandle) {
SocketHandle handle = ((ServerSocketHandle)listener.handle).accept(tc);
if (handle != null) {
SixModelObject IOType = tc.curFrame.codeRef.staticInfo.compUnit.hllConfig.ioType;
IOHandleInstance h = (IOHandleInstance)IOType.st.REPR.allocate(tc, IOType.st);
h.handle = handle;
return h;
}
} else {
ExceptionHandling.dieInternal(tc,
"This handle does not support accept");
}
return null;
}
public static long getport(SixModelObject obj, ThreadContext tc) {
IOHandleInstance h = (IOHandleInstance)obj;
if (h.handle instanceof ServerSocketHandle) {
return ((ServerSocketHandle)h.handle).listenPort;
} else {
ExceptionHandling.dieInternal(tc,
"This handle does not support getport");
}
return -1;
}
public static long filereadable(String path, ThreadContext tc) {
Path path_o;
long res;
try {
path_o = Paths.get(path);
res = Files.isReadable(path_o) ? 1 : 0;
}
catch (Exception e) {
die_s(e.getMessage(), tc);
res = -1; /* unreachable */
}
return res;
}
public static long filewritable(String path, ThreadContext tc) {
Path path_o;
long res;
try {
path_o = Paths.get(path);
res = Files.isWritable(path_o) ? 1 : 0;
}
catch (Exception e) {
die_s(e.getMessage(), tc);
res = -1; /* unreachable */
}
return res;
}
public static long fileexecutable(String path, ThreadContext tc) {
Path path_o;
long res;
try {
path_o = Paths.get(path);
res = Files.isExecutable(path_o) ? 1 : 0;
}
catch (Exception e) {
die_s(e.getMessage(), tc);
res = -1; /* unreachable */
}
return res;
}
public static long fileislink(String path, ThreadContext tc) {
Path path_o;
long res;
try {
path_o = Paths.get(path);
res = Files.isSymbolicLink(path_o) ? 1 : 0;
}
catch (Exception e) {
die_s(e.getMessage(), tc);
res = -1; /* unreachable */
}
return res;
}
public static SixModelObject getstdin(ThreadContext tc) {
SixModelObject IOType = tc.curFrame.codeRef.staticInfo.compUnit.hllConfig.ioType;
IOHandleInstance h = (IOHandleInstance)IOType.st.REPR.allocate(tc, IOType.st);
h.handle = new StandardReadHandle(tc, tc.gc.in);
return h;
}
public static SixModelObject getstdout(ThreadContext tc) {
SixModelObject IOType = tc.curFrame.codeRef.staticInfo.compUnit.hllConfig.ioType;
IOHandleInstance h = (IOHandleInstance)IOType.st.REPR.allocate(tc, IOType.st);
h.handle = new StandardWriteHandle(tc, tc.gc.out);
return h;
}
public static SixModelObject getstderr(ThreadContext tc) {
SixModelObject IOType = tc.curFrame.codeRef.staticInfo.compUnit.hllConfig.ioType;
IOHandleInstance h = (IOHandleInstance)IOType.st.REPR.allocate(tc, IOType.st);
h.handle = new StandardWriteHandle(tc, tc.gc.err);
return h;
}
public static SixModelObject seekfh(SixModelObject obj, long offset, long whence, ThreadContext tc) {
if (obj instanceof IOHandleInstance) {
IOHandleInstance h = (IOHandleInstance)obj;
if (h.handle instanceof IIOSeekable) {
((IIOSeekable)h.handle).seek(tc, offset, whence);
}
else
throw ExceptionHandling.dieInternal(tc,
"This handle does not support seek");
}
else {
throw ExceptionHandling.dieInternal(tc,
"seekfh requires an object with the IOHandle REPR");
}
return null;
}
public static long tellfh(SixModelObject obj, ThreadContext tc) {
if (obj instanceof IOHandleInstance) {
IOHandleInstance h = (IOHandleInstance)obj;
if (h.handle instanceof IIOSeekable)
return ((IIOSeekable)h.handle).tell(tc);
else
throw ExceptionHandling.dieInternal(tc,
"This handle does not support tell");
}
else {
throw ExceptionHandling.dieInternal(tc,
"tellfh requires an object with the IOHandle REPR");
}
}
public static SixModelObject lockfh(SixModelObject obj, long flag, ThreadContext tc) {
if (obj instanceof IOHandleInstance) {
IOHandleInstance h = (IOHandleInstance)obj;
if (h.handle instanceof IIOLockable) {
((IIOLockable)h.handle).lock(tc, flag);
return obj;
}
else
throw ExceptionHandling.dieInternal(tc,
"This handle does not support locking");
}
else {
throw ExceptionHandling.dieInternal(tc,
"lockfh requires an object with the IOHandle REPR");
}
}
public static SixModelObject unlockfh(SixModelObject obj, ThreadContext tc) {
if (obj instanceof IOHandleInstance) {
IOHandleInstance h = (IOHandleInstance)obj;
if (h.handle instanceof IIOLockable) {
((IIOLockable)h.handle).unlock(tc);
return obj;
}
else
throw ExceptionHandling.dieInternal(tc,
"This handle does not support locking");
}
else {
throw ExceptionHandling.dieInternal(tc,
"unlockfh requires an object with the IOHandle REPR");
}
}
public static SixModelObject readfh(SixModelObject io, SixModelObject res, long bytes, ThreadContext tc) {
if (io instanceof IOHandleInstance) {
IOHandleInstance h = (IOHandleInstance)io;
if (h.handle instanceof IIOSyncReadable) {
if (res instanceof VMArrayInstance_i8) {
VMArrayInstance_i8 arr = (VMArrayInstance_i8)res;
byte[] array = ((IIOSyncReadable)h.handle).read(tc, (int)bytes);
arr.elems = array.length;
arr.start = 0;
arr.slots = array;
return res;
} else if (res instanceof VMArrayInstance_u8) {
VMArrayInstance_u8 arr = (VMArrayInstance_u8)res;
byte[] array = ((IIOSyncReadable)h.handle).read(tc, (int)bytes);
arr.elems = array.length;
arr.start = 0;
arr.slots = array;
return res;
} else {
throw ExceptionHandling.dieInternal(tc,
"readfh requires a Buf[int8] or a Buf[uint8]");
}
} else {
throw ExceptionHandling.dieInternal(tc,
"This handle does not support read");
}
} else {
throw ExceptionHandling.dieInternal(tc,
"readfh requires an object with the IOHandle REPR");
}
}
public static long writefh(SixModelObject obj, SixModelObject buf, ThreadContext tc) {
ByteBuffer bb = Buffers.unstashBytes(buf, tc);
long written;
if (obj instanceof IOHandleInstance) {
IOHandleInstance h = (IOHandleInstance)obj;
byte[] bytesToWrite = new byte[bb.limit()];
bb.get(bytesToWrite);
if (h.handle instanceof IIOSyncWritable)
written = ((IIOSyncWritable)h.handle).write(tc, bytesToWrite);
else
throw ExceptionHandling.dieInternal(tc,
"This handle does not support write");
}
else {
throw ExceptionHandling.dieInternal(tc,
"writefh requires an object with the IOHandle REPR");
}
return written;
}
public static SixModelObject flushfh(SixModelObject obj, ThreadContext tc) {
if (obj instanceof IOHandleInstance) {
IOHandleInstance h = (IOHandleInstance)obj;
if (h.handle instanceof IIOSyncWritable)
((IIOSyncWritable)h.handle).flush(tc);
else
throw ExceptionHandling.dieInternal(tc,
"This handle does not support flush");
}
else {
die_s("flushfh requires an object with the IOHandle REPR", tc);
}
return obj;
}
public static String readlink(String path, ThreadContext tc) {
try {
return Files.readSymbolicLink(new File(path).toPath()).toString();
} catch (NotLinkException e) {
throw ExceptionHandling.dieInternal(tc, path + " is not a symbolic link");
} catch (IOException e) {
throw ExceptionHandling.dieInternal(tc, "Failed to readlink file: " + e);
}
}
public static long eoffh(SixModelObject obj, ThreadContext tc) {
if (obj instanceof IOHandleInstance) {
IOHandleInstance h = (IOHandleInstance)obj;
if (h.handle instanceof IIOSyncReadable)
return ((IIOSyncReadable)h.handle).eof(tc) ? 1 : 0;
else
throw ExceptionHandling.dieInternal(tc,
"This handle does not support eof");
}
else {
throw ExceptionHandling.dieInternal(tc,
"eoffh requires an object with the IOHandle REPR");
}
}
public static SixModelObject closefh(SixModelObject obj, ThreadContext tc) {
if (obj instanceof IOHandleInstance) {
IOHandleInstance h = (IOHandleInstance)obj;
if (h.handle instanceof IIOClosable)
((IIOClosable)h.handle).close(tc);
else
throw ExceptionHandling.dieInternal(tc,
"This handle does not support close");
}
else {
die_s("closefh requires an object with the IOHandle REPR", tc);
}
return obj;
}
public static SixModelObject setbuffersizefh(SixModelObject obj, long size, ThreadContext tc) {
if (obj instanceof IOHandleInstance) {
IOHandleInstance h = (IOHandleInstance)obj;
// TODO: what to do with instances of other classes like BOOTIO?
if (h.handle instanceof IIOSyncWritable)
((IIOSyncWritable)h.handle).setBufferSize(tc, size);
}
else {
die_s("setbuffersizefh requires an object with the IOHandle REPR", tc);
}
return obj;
}
public static long isttyfh(SixModelObject obj, ThreadContext tc) {
if (obj instanceof IOHandleInstance) {
IOHandleInstance h = (IOHandleInstance)obj;
if (h.handle instanceof IIOPossiblyTTY)
return ((IIOPossiblyTTY)h.handle).isTTY(tc) ? 1 : 0;
else
return 0;
}
else {
die_s("isttyfh requires an object with the IOHandle REPR", tc);
}
return -1;
}
public static long filenofh(SixModelObject obj, ThreadContext tc) {
/* XXX Implement this */
return -1;
}
public static Set<PosixFilePermission> modeToPosixFilePermission(long mode) {
Set<PosixFilePermission> perms = EnumSet.noneOf(PosixFilePermission.class);
if ((mode & 0001) != 0) perms.add(PosixFilePermission.OTHERS_EXECUTE);
if ((mode & 0002) != 0) perms.add(PosixFilePermission.OTHERS_WRITE);
if ((mode & 0004) != 0) perms.add(PosixFilePermission.OTHERS_READ);
if ((mode & 0010) != 0) perms.add(PosixFilePermission.GROUP_EXECUTE);
if ((mode & 0020) != 0) perms.add(PosixFilePermission.GROUP_WRITE);
if ((mode & 0040) != 0) perms.add(PosixFilePermission.GROUP_READ);
if ((mode & 0100) != 0) perms.add(PosixFilePermission.OWNER_EXECUTE);
if ((mode & 0200) != 0) perms.add(PosixFilePermission.OWNER_WRITE);
if ((mode & 0400) != 0) perms.add(PosixFilePermission.OWNER_READ);
return perms;
}
public static long chmod(String path, long mode, ThreadContext tc) {
Path path_o;
try {
path_o = Paths.get(path);
Set<PosixFilePermission> perms = modeToPosixFilePermission(mode);
Files.setPosixFilePermissions(path_o, perms);
}
catch (Exception e) {
die_s(IOExceptionMessages.message(e), tc);
}
return 0;
}
public static long chown(String path, long uid, long gid, ThreadContext tc) {
Path path_o;
try {
path_o = Paths.get(path);
Files.setAttribute(path_o, "unix:uid", uid);
Files.setAttribute(path_o, "unix:gid", gid);
}
catch (Exception e) {
die_s(IOExceptionMessages.message(e), tc);
}
return 0;
}
public static long unlink(String path, ThreadContext tc) {
Path path_o = Paths.get(path);
if (Files.isDirectory(path_o)) {
die_s("Failed to delete file: is a directory", tc);
}
else {
try {
Files.deleteIfExists(path_o);
}
catch (Exception e) {
die_s(IOExceptionMessages.message(e), tc);
}
}
return 0;
}
public static long rmdir(String path, ThreadContext tc) {
Path path_o = Paths.get(path);
if (!Files.isDirectory(path_o)) {
die_s("Failed to rmdir: not a directory", tc);
}
else {
try {
Files.delete(path_o);
}
catch (Exception e) {
die_s(IOExceptionMessages.message(e), tc);
}
}
return 0;
}
public static String cwd() {
return System.getProperty("user.dir");
}
public static String chdir(String path, ThreadContext tc) {
die_s("chdir is not available on JVM", tc);
return null;
}
public static long mkdir(String path, long mode, ThreadContext tc) {
try {
String os = System.getProperty("os.name").toLowerCase();
if (os.indexOf("win") >= 0)
Files.createDirectories(Paths.get(path));
else
Files.createDirectories(Paths.get(path),
PosixFilePermissions.asFileAttribute(modeToPosixFilePermission(mode)));
}
catch (Exception e) {
die_s(IOExceptionMessages.message(e), tc);
}
return 0;
}
public static long rename(String before, String after, ThreadContext tc) {
Path before_o = Paths.get(before);
Path after_o = Paths.get(after);
try {
Files.move(before_o, after_o, StandardCopyOption.REPLACE_EXISTING);
}
catch (Exception e) {
die_s(IOExceptionMessages.message(e), tc);
}
return 0;
}
public static long copy(String before, String after, ThreadContext tc) {
Path before_o = Paths.get(before);
Path after_o = Paths.get(after);
try {
Files.copy( before_o, after_o, StandardCopyOption.REPLACE_EXISTING);
}
catch (Exception e) {
die_s(IOExceptionMessages.message(e), tc);
}
return 0;
}
public static long link(String before, String after, ThreadContext tc) {
Path before_o = Paths.get(before);
Path after_o = Paths.get(after);
try {
Files.createLink(after_o, before_o);
}
catch (Exception e) {
die_s(IOExceptionMessages.message(e), tc);
}
return 0;
}
public static String gethostname(){
try {
String hostname = InetAddress.getLocalHost().getHostName();
return hostname;
} catch (Exception e) {
return null;
}
}
public static final int PIPE_INHERIT = 1;
public static final int PIPE_IGNORE = 2;
public static final int PIPE_CAPTURE = 4;
public static final int PIPE_INHERIT_IN = 1;
public static final int PIPE_IGNORE_IN = 2;
public static final int PIPE_CAPTURE_IN = 4;
public static final int PIPE_INHERIT_OUT = 8;
public static final int PIPE_IGNORE_OUT = 16;
public static final int PIPE_CAPTURE_OUT = 32;
public static final int PIPE_INHERIT_ERR = 64;
public static final int PIPE_IGNORE_ERR = 128;
public static final int PIPE_CAPTURE_ERR = 256;
private static void setup_process_builder(ThreadContext tc, ProcessBuilder pb, SixModelObject in, SixModelObject out, SixModelObject err, long flags) {