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Fix UnsupportedOperationException on Windows in JNI* loaders #38

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Merged
luhenry merged 1 commit into from
Mar 19, 2026
+35 −10
Merged

Fix UnsupportedOperationException on Windows in JNI* loaders #38

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15 changes: 12 additions & 3 deletions arpack/src/main/java/dev/ludovic/netlib/arpack/JNIARPACK.java
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Original file line number Diff line number Diff line change
Expand Up @@ -28,9 +28,11 @@
import java.io.IOException;
import java.io.InputStream;
import java.io.UncheckedIOException;
import java.nio.file.FileSystems;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.StandardCopyOption;
import java.nio.file.attribute.FileAttribute;
import java.nio.file.attribute.PosixFilePermissions;

final class JNIARPACK extends AbstractARPACK implements NativeARPACK {
Expand All @@ -42,24 +44,31 @@ protected JNIARPACK() {
if (osName == null || osName.isEmpty()) {
throw new RuntimeException("Unable to load native implementation");
}
boolean isWindows = osName.startsWith("Windows");
if (osName.equals("Mac OS X")) {
osName = "macos";
} else if (isWindows) {
osName = "windows";
}
String osArch = System.getProperty("os.arch");
if (osArch == null || osArch.isEmpty()) {
throw new RuntimeException("Unable to load native implementation");
}

String libPrefix = "libnetlibarpackjni";
String libExtension = osName.equals("macos") ? ".dylib" : ".so";
String libExtension = osName.equals("macos") ? ".dylib" : isWindows ? ".dll" : ".so";
String libName = libPrefix + libExtension;

FileAttribute<?>[] attrs = FileSystems.getDefault()
.supportedFileAttributeViews().contains("posix")
? new FileAttribute<?>[]{ PosixFilePermissions.asFileAttribute(PosixFilePermissions.fromString("rwxr-x---")) }
: new FileAttribute<?>[0];

Path temp;
try (InputStream resource = this.getClass().getClassLoader().getResourceAsStream(
String.format("resources/native/%s-%s/%s", osName, osArch, libName))) {
assert resource != null;
Files.copy(resource, temp = Files.createTempFile(libPrefix, libExtension,
PosixFilePermissions.asFileAttribute(PosixFilePermissions.fromString("rwxr-x---"))),
Files.copy(resource, temp = Files.createTempFile(libPrefix, libExtension, attrs),
StandardCopyOption.REPLACE_EXISTING);
temp.toFile().deleteOnExit();
} catch (IOException e) {
Expand Down
15 changes: 11 additions & 4 deletions blas/src/main/java/dev/ludovic/netlib/blas/JNIBLAS.java
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Original file line number Diff line number Diff line change
Expand Up @@ -28,9 +28,11 @@
import java.io.IOException;
import java.io.InputStream;
import java.io.UncheckedIOException;
import java.nio.file.FileSystems;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.StandardCopyOption;
import java.nio.file.attribute.FileAttribute;
import java.nio.file.attribute.PosixFilePermissions;
import java.util.logging.Logger;

Expand All @@ -45,27 +47,32 @@ protected JNIBLAS() {
if (osName == null || osName.isEmpty()) {
throw new RuntimeException("Unable to load native implementation");
}
boolean isWindows = osName.startsWith("Windows");
if (osName.equals("Mac OS X")) {
osName = "macos";
} else if (isWindows) {
osName = "windows";
}
String osArch = System.getProperty("os.arch");
if (osArch == null || osArch.isEmpty()) {
throw new RuntimeException("Unable to load native implementation");
}

String libPrefix = "libnetlibblasjni";
String libExtension = osName.equals("macos") ? ".dylib" : ".so";
String libExtension = osName.equals("macos") ? ".dylib" : isWindows ? ".dll" : ".so";
String libName = libPrefix + libExtension;

log.fine(String.format("Trying to load native implementation from resource: resources/native/%s-%s/%s", osName, osArch, libName));
FileAttribute<?>[] attrs = FileSystems.getDefault()
.supportedFileAttributeViews().contains("posix")
? new FileAttribute<?>[]{ PosixFilePermissions.asFileAttribute(PosixFilePermissions.fromString("rwxr-x---")) }
: new FileAttribute<?>[0];

Path temp;
try (InputStream resource = this.getClass().getClassLoader().getResourceAsStream(
String.format("resources/native/%s-%s/%s", osName, osArch, libName))) {
assert resource != null;
Files.copy(resource, temp = Files.createTempFile(libPrefix, libExtension,
PosixFilePermissions.asFileAttribute(PosixFilePermissions.fromString("rwxr-x---"))),
StandardCopyOption.REPLACE_EXISTING);
Files.copy(resource, temp = Files.createTempFile(libPrefix, libExtension, attrs), StandardCopyOption.REPLACE_EXISTING);
temp.toFile().deleteOnExit();
} catch (IOException e) {
throw new UncheckedIOException("Unable to load native implementation", e);
Expand Down
15 changes: 12 additions & 3 deletions lapack/src/main/java/dev/ludovic/netlib/lapack/JNILAPACK.java
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Original file line number Diff line number Diff line change
Expand Up @@ -28,9 +28,11 @@
import java.io.InputStream;
import java.io.UncheckedIOException;
import java.io.IOException;
import java.nio.file.FileSystems;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.StandardCopyOption;
import java.nio.file.attribute.FileAttribute;
import java.nio.file.attribute.PosixFilePermissions;

final class JNILAPACK extends AbstractLAPACK implements NativeLAPACK {
Expand All @@ -42,24 +44,31 @@ protected JNILAPACK() {
if (osName == null || osName.isEmpty()) {
throw new RuntimeException("Unable to load native implementation");
}
boolean isWindows = osName.startsWith("Windows");
if (osName.equals("Mac OS X")) {
osName = "macos";
} else if (isWindows) {
osName = "windows";
}
String osArch = System.getProperty("os.arch");
if (osArch == null || osArch.isEmpty()) {
throw new RuntimeException("Unable to load native implementation");
}

String libPrefix = "libnetliblapackjni";
String libExtension = osName.equals("macos") ? ".dylib" : ".so";
String libExtension = osName.equals("macos") ? ".dylib" : isWindows ? ".dll" : ".so";
String libName = libPrefix + libExtension;

FileAttribute<?>[] attrs = FileSystems.getDefault()
.supportedFileAttributeViews().contains("posix")
? new FileAttribute<?>[]{ PosixFilePermissions.asFileAttribute(PosixFilePermissions.fromString("rwxr-x---")) }
: new FileAttribute<?>[0];

Path temp;
try (InputStream resource = this.getClass().getClassLoader().getResourceAsStream(
String.format("resources/native/%s-%s/%s", osName, osArch, libName))) {
assert resource != null;
Files.copy(resource, temp = Files.createTempFile(libPrefix, libExtension,
PosixFilePermissions.asFileAttribute(PosixFilePermissions.fromString("rwxr-x---"))),
Files.copy(resource, temp = Files.createTempFile(libPrefix, libExtension, attrs),
StandardCopyOption.REPLACE_EXISTING);
temp.toFile().deleteOnExit();
} catch (IOException e) {
Expand Down
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