Package org.javacc.utils

Class OutputFileDigest

java.lang.Object

org.javacc.utils.OutputFileDigest

abstract class OutputFileDigest
extends Object

The OutputFileDigest class.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static class	OutputFileDigest.NullOutputStream	The OutputFileDigest.NullOutputStream implements an OutputStream to the null device.

Field Summary

Fields

Modifier and Type	Field	Description
private static final char[]	HEX_DIGITS
private static final String	MD5_LINE_PART_1
private static final String	MD5_LINE_PART_1q
private static final String	MD5_LINE_PART_2
private static final String	MD5_LINE_PART_2q

Constructor Summary

Constructors

Modifier	Constructor	Description
private	OutputFileDigest()	Constructs an instance of OutputFileDigest.

Method Summary

Modifier and Type	Method	Description
static boolean	check(File file, String toolName, String compatibleVersion, List<String> options, Context context)	Check if the File already exists.
private static void	checkOptions(File file, String[] options, Context context)	Read the options line from the file and compare to the options currently in use.
private static void	checkVersion(File file, String toolName, String versionId, Context context)	Output a warning if the file was created with an incompatible version of JavaCC.
static String	getDigestLine(DigestOutputStream digestStream)	Creates the Digest Line.
static DigestOutputStream	getDigestStream(OutputStream stream)	Create an MD5 DigestOutputStream for the provided OutputStream.
private static String	toHexString(DigestOutputStream digestStream)

Methods inherited from class java.lang.Object

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

Field Details

MD5_LINE_PART_1

private static final String MD5_LINE_PART_1

See Also:

• Constant Field Values

MD5_LINE_PART_1q

private static final String MD5_LINE_PART_1q

See Also:

• Constant Field Values

MD5_LINE_PART_2

private static final String MD5_LINE_PART_2

See Also:

• Constant Field Values

MD5_LINE_PART_2q

private static final String MD5_LINE_PART_2q

See Also:

• Constant Field Values

HEX_DIGITS

private static final char[] HEX_DIGITS

Constructor Details

OutputFileDigest

private OutputFileDigest()

Constructs an instance of OutputFileDigest.

Method Details

getDigestLine

public static String getDigestLine(DigestOutputStream digestStream)

Creates the Digest Line.

Parameters:

digestStream -

getDigestStream

public static DigestOutputStream getDigestStream(OutputStream stream)
                                          throws NoSuchAlgorithmException

Create an MD5 DigestOutputStream for the provided OutputStream.

Parameters:

stream -

Throws:

NoSuchAlgorithmException

check

public static boolean check(File file,
 String toolName,
 String compatibleVersion,
 List<String> options,
 Context context)
                     throws FileNotFoundException,
IOException

Check if the File already exists.

Parameters:

file -

toolName -

compatibleVersion -

options -

Throws:

FileNotFoundException

IOException

checkVersion

private static void checkVersion(File file,
 String toolName,
 String versionId,
 Context context)

Output a warning if the file was created with an incompatible version of JavaCC.

Parameters:

file -

toolName -

versionId -

checkOptions

private static void checkOptions(File file,
 String[] options,
 Context context)

Read the options line from the file and compare to the options currently in use. Output a warning if they are different.

Parameters:

file -

options -

toHexString

private static String toHexString(DigestOutputStream digestStream)