org.vafer.jdeb.utils

Class Utils

java.lang.Object

org.vafer.jdeb.utils.Utils

public final class Utils
extends Object

Simple utils functions. ATTENTION: don't use outside of jdeb

Author:

Torsten Curdt

Constructor Summary

Constructors

Constructor and Description
Utils()

Method Summary

Methods

Modifier and Type	Method and Description
static String	convertToDebianVersion(String version, boolean apply, String envName, Date timestamp) Convert the project version to a version suitable for a Debian package.
static int	copy(InputStream pInput, OutputStream pOutput)
static Collection<String>	getKnownPGPSecureRingLocations() Get the known locations where the secure keyring can be located.
static File	guessKeyRingFile() Tries to guess location of the user secure keyring using various heuristics.
static boolean	isNullOrEmpty(String str) Returns true if string is null or empty.
static String	joinPaths(String... elements) Join together path elements with File.separator.
static String	lookupIfEmpty(String value, Map<String,String> props, String key) Extracts value from map if given value is null.
static String	movePath(String file, String target) Construct new path by replacing file directory part.
static String	replaceVariables(VariableResolver pResolver, String pExpression, String pOpen, String pClose) Substitute the variables in the given expression with the values from the resolver
static String	stripLeadingSlash(String s)
static String	stripPath(int p, String s)
static String	toHex(byte[] bytes)
static byte[]	toUnixLineEndings(InputStream input) Replaces new line delimiters in the input stream with the Unix line feed.

Methods inherited from class java.lang.Object

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

Constructor Detail

Utils

public Utils()

Method Detail

copy

public static int copy(InputStream pInput,
       OutputStream pOutput)
                throws IOException

Throws:

IOException

toHex

public static String toHex(byte[] bytes)

stripPath

public static String stripPath(int p,
               String s)

stripLeadingSlash

public static String stripLeadingSlash(String s)

replaceVariables

public static String replaceVariables(VariableResolver pResolver,
                      String pExpression,
                      String pOpen,
                      String pClose)

Substitute the variables in the given expression with the values from the resolver

Parameters:

pResolver -

pExpression -

toUnixLineEndings

public static byte[] toUnixLineEndings(InputStream input)
                                throws IOException

Replaces new line delimiters in the input stream with the Unix line feed.

Parameters:

input -

Throws:

IOException

convertToDebianVersion

public static String convertToDebianVersion(String version,
                            boolean apply,
                            String envName,
                            Date timestamp)

Convert the project version to a version suitable for a Debian package. -SNAPSHOT suffixes are replaced with a timestamp (~yyyyMMddHHmmss). The separator before a rc, alpha or beta version is replaced with '~' such that the version is always ordered before the final or GA release.

Parameters:

version - the project version to convert to a Debian package version

timestamp - the date used as the timestamp to replace the SNAPSHOT suffix

movePath

public static String movePath(String file,
              String target)

Construct new path by replacing file directory part. No files are actually modified.

Parameters:

file - path to move

target - new path directory

lookupIfEmpty

public static String lookupIfEmpty(String value,
                   Map<String,String> props,
                   String key)

Extracts value from map if given value is null.

Parameters:

value - current value

props - properties to extract value from

key - property name to extract

Returns:

initial value or value extracted from map

getKnownPGPSecureRingLocations

public static Collection<String> getKnownPGPSecureRingLocations()

Get the known locations where the secure keyring can be located. Looks through known locations of the GNU PG secure keyring.

Returns:

The location of the PGP secure keyring if it was found, null otherwise

guessKeyRingFile

public static File guessKeyRingFile()
                             throws FileNotFoundException

Tries to guess location of the user secure keyring using various heuristics.

Returns:

path to the keyring file

Throws:

FileNotFoundException - if no keyring file found

joinPaths

public static String joinPaths(String... elements)

Join together path elements with File.separator. Filters out null elements.

Parameters:

elements - The path elements to join

Returns:

elements concatenated together with File.separator

isNullOrEmpty

public static boolean isNullOrEmpty(String str)

Returns true if string is null or empty.