org.eclipse.jdt.internal.launching

Class CommandLineShortener

java.lang.Object

org.eclipse.jdt.internal.launching.CommandLineShortener

public class CommandLineShortener
extends java.lang.Object

Shortens the command line by writing all commands into an arguments file.

Constructor Summary

Constructors

Modifier	Constructor and Description
	CommandLineShortener(IVMInstall vmInstall, ILaunch launch, java.lang.String[] cmdLine, java.io.File workingDir)
protected	CommandLineShortener(java.lang.String javaVersion, ILaunch launch, java.lang.String[] cmdLine, java.io.File workingDir)

Method Summary

Modifier and Type	Method and Description
protected void	addProcessTempFile(java.io.File file)
protected java.io.File	createArgumentFile(java.lang.String[] cmdLine)
static java.lang.String	getJavaVersion(IVMInstall vmInstall)
protected java.lang.String	getLaunchConfigurationName()
protected java.lang.String	getLaunchTimeStamp()
java.lang.String[]	getOriginalCmdLine()
java.util.List<java.io.File>	getProcessTempFiles() Necessary files that were created for starting the process.
java.io.File	getProcessTempFilesDir()
protected boolean	isArgumentFileSupported()
void	setProcessTempFilesDir(java.io.File processTempFilesDir) The directory to use to create temp files needed when shortening the classpath.
java.lang.String[]	shortenCommandLine() Writes the command line into an arguments file and returns the shortened command line.
boolean	shouldShortenCommandLine() Indicates if the command line can and should be shortened.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CommandLineShortener

public CommandLineShortener(IVMInstall vmInstall,
                            ILaunch launch,
                            java.lang.String[] cmdLine,
                            java.io.File workingDir)

Parameters:

vmInstall - the vm installation

launch - the launch

cmdLine - the command line (java executable + VM arguments + program arguments)

lastJavaArgumentIndex - the index of the last java argument in cmdLine (next arguments if any are program arguments)

workingDir - the working dir to use for the launched VM or null

envp - array of strings, each element of which has environment variable settings in the format name=value, or null if the subprocess should inherit the environment of the current process.

CommandLineShortener

protected CommandLineShortener(java.lang.String javaVersion,
                               ILaunch launch,
                               java.lang.String[] cmdLine,
                               java.io.File workingDir)

Method Detail

getJavaVersion

public static java.lang.String getJavaVersion(IVMInstall vmInstall)

addProcessTempFile

protected void addProcessTempFile(java.io.File file)

createArgumentFile

protected java.io.File createArgumentFile(java.lang.String[] cmdLine)
                                   throws CoreException

Throws:

CoreException

getLaunchConfigurationName

protected java.lang.String getLaunchConfigurationName()

getLaunchTimeStamp

protected java.lang.String getLaunchTimeStamp()

getProcessTempFiles

public java.util.List<java.io.File> getProcessTempFiles()

Necessary files that were created for starting the process. They can be deleted once the process is terminated

Returns:

created files

getProcessTempFilesDir

public java.io.File getProcessTempFilesDir()

getOriginalCmdLine

public java.lang.String[] getOriginalCmdLine()

Returns:

the original, unshortened command line

isArgumentFileSupported

protected boolean isArgumentFileSupported()

Returns:

true if the JVM supports launching with argument files, false otherwise

setProcessTempFilesDir

public void setProcessTempFilesDir(java.io.File processTempFilesDir)

The directory to use to create temp files needed when shortening the classpath. By default, the working directory is used The java.io.tmpdir should not be used on MacOs (does not work for classpath-only jars)

Parameters:

processTempFilesDir -

shortenCommandLine

public java.lang.String[] shortenCommandLine()
                                      throws CoreException

Writes the command line into an arguments file and returns the shortened command line.

Returns:

a shortened command line

Throws:

CoreException

shouldShortenCommandLine

public boolean shouldShortenCommandLine()
                                 throws CoreException

Indicates if the command line can and should be shortened.

The command line should only be shortened if at least Java 9 is used and the launch is configured to do so.

Returns:

true if isArgumentFileSupported() returns true and command line should be shortened, false otherwise

Throws:

CoreException