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Simplify SymLink creation in eclipse.core.tests #1486

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Simplify SymLink creation in eclipse.core.tests #1486

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45 changes: 1 addition & 44 deletions ...s/org.eclipse.core.tests.harness/src/org/eclipse/core/tests/harness/FileSystemHelper.java
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Original file line number Diff line number Diff line change
Expand Up @@ -17,10 +17,8 @@
import static org.eclipse.core.tests.harness.TestHarnessPlugin.PI_HARNESS;
import static org.eclipse.core.tests.harness.TestHarnessPlugin.log;

import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStreamReader;
import java.nio.file.Files;
import java.nio.file.Path;
import org.eclipse.core.runtime.ILog;
Expand Down Expand Up @@ -121,48 +119,7 @@ public static void clear(java.io.File file) {
*/
public static void createSymLink(File basedir, String linkName, String linkTarget, boolean isDir)
throws IOException {
// The following code creates even a link if
// Files.createSymbolicLink(new File(basedir, linkName).toPath(), new
// File(basedir, linkTarget).toPath());
// would throw java.nio.file.FileSystemException "missing rights"
//
Process process = startSymlinkCreation(basedir, linkName, linkTarget, isDir);
try {
int exitcode = process.waitFor();
if (exitcode != 0) {
// xxx wrong charset. from jdk17+ we could use Console.charset()
try (BufferedReader reader = new BufferedReader(new InputStreamReader(process.getErrorStream()))) {
String result = reader.readLine();
throw new IllegalStateException("Creating symlink is unsupported: " + result);
}
}
} catch (InterruptedException e) {
throw new IOException("Creating symlink failed due to interrupted exception", e);
}
}

private static Process startSymlinkCreation(File basedir, String linkName, String linkTarget, boolean isDir)
throws IOException {
// Deliberately use an empty environment to make the test reproducible.
String[] environmentParameters = {};
if (Platform.getOS().equals(Platform.OS_WIN32)) {
return startSymlinkCreationOnWindows(basedir, linkName, linkTarget, isDir, environmentParameters);
}
String[] cmd = { "ln", "-s", linkTarget, linkName };
return Runtime.getRuntime().exec(cmd, environmentParameters, basedir);
}

private static Process startSymlinkCreationOnWindows(File basedir, String linkName, String linkTarget,
boolean isDir, String[] environmentParameters) throws IOException {
// use File.getPath to avoid 'Illegal argument - ".."' for using "../"
// instead of "..\"
if (isDir) {
String[] cmd = { "cmd", "/c", "mklink", "/d", new File(linkName).getPath(),
new File(linkTarget).getPath() };
return Runtime.getRuntime().exec(cmd, environmentParameters, basedir);
}
String[] cmd = { "cmd", "/c", "mklink", new File(linkName).getPath(), new File(linkTarget).getPath() };
return Runtime.getRuntime().exec(cmd, environmentParameters, basedir);
Files.createSymbolicLink(basedir.toPath().resolve(linkName), basedir.toPath().resolve(linkTarget));
}

/**
Expand Down
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