org.apache.maven.plugin.javadoc
Class JavadocUtil

java.lang.Object
  org.apache.maven.plugin.javadoc.JavadocUtil

public class JavadocUtil
extends Object

Set of utilities methods for Javadoc.

Since:

2.4

Version:

$Id: JavadocUtil.html 829396 2012-08-19 17:35:19Z hboutemy $

Author:

Vincent Siveton

Field Summary

static int	DEFAULT_TIMEOUT The default timeout used when fetching url, i.e.
protected static String	ERROR_INIT_VM Error message when VM could not be started using invoker.

Constructor Summary

JavadocUtil()

Method Summary

protected static void	addFilesFromSource(List files, File sourceDirectory, String[] excludePackages) Convenience method that gets the files to be included in the javadoc.
protected static void	copyJavadocResources(File outputDirectory, File javadocDir) Deprecated. since 2.5, using copyJavadocResources(File, File, String) instead of.
protected static void	copyJavadocResources(File outputDirectory, File javadocDir, String excludedocfilessubdir) Convenience method that copy all doc-files directories from javadocDir to the outputDirectory.
protected static void	copyResource(URL url, File file) Copy the given url to the given file.
protected static void	fetchURL(org.apache.maven.settings.Settings settings, URL url) Fetch an URL
protected static List	getCompileArtifacts(Set artifacts) Deprecated. since 2.5, using getCompileArtifacts(Set, boolean) instead of.
protected static List	getCompileArtifacts(Set artifacts, boolean withTestScope) Copy from MavenProject.getCompileArtifacts()
protected static List	getExcludedNames(List sourcePaths, String[] subpackagesList, String[] excludedPackages) Method that gets all the source files to be excluded from the javadoc on the given source paths.
protected static List	getExcludedPackages(String sourceDirectory, String[] excludePackagenames) Method that gets the complete package names (including subpackages) of the packages that were defined in the excludePackageNames parameter.
protected static List	getIncludedFiles(File sourceDirectory, String[] fileList, String[] excludePackages) Method that gets the files or classes that would be included in the javadocs using the subpackages parameter.
protected static float	getJavadocVersion(File javadocExe) Call the Javadoc tool and parse its output to find its version, i.e.:
protected static List	getTagletClassNames(File jarFile) Auto-detect the class names of the implementation of com.sun.tools.doclets.Taglet class from a given jar file.
protected static String	hideProxyPassword(String cmdLine, org.apache.maven.settings.Settings settings) For security reasons, if an active proxy is defined and needs an authentication by username/password, hide the proxy password in the command line.
protected static void	invokeMaven(org.apache.maven.plugin.logging.Log log, File localRepositoryDir, File projectFile, List goals, Properties properties, File invokerLog) Invoke Maven for the given project file with a list of goals and properties, the output will be in the invokerlog file.
static boolean	isEmpty(Collection<?> collection) Convenience method to determine that a collection is empty or null.
static boolean	isNotEmpty(Collection<?> collection) Convenience method to determine that a collection is not empty or null.
protected static String	parseJavadocMemory(String memory) Parse a memory string which be used in the JVM arguments -Xms or -Xmx.
protected static float	parseJavadocVersion(String output) Parse the output for 'javadoc -J-version' and return the javadoc version recognized.
static List<String>	pruneDirs(org.apache.maven.project.MavenProject project, List<String> dirs) Method that removes the invalid directories in the specified directories.
protected static List<String>	pruneFiles(List<String> files) Method that removes the invalid files in the specified files.
protected static String	quotedArgument(String value) Convenience method to wrap an argument value in single quotes (i.e.
protected static String	quotedPathArgument(String value) Convenience method to format a path argument so that it is properly interpreted by the javadoc tool.
protected static String	readFile(File javaFile, String encoding) Read the given file and return the content or null if an IOException occurs.
static boolean	shouldPruneFile(String f, List<String> pruned) Determine whether a file should be excluded from the provided list of paths, based on whether it exists and is already present in the list.
protected static String[]	splitPath(String path) Split the given path with colon and semi-colon, to support Solaris and Windows path.
static String	toRelative(File basedir, String absolutePath)
protected static String	unifyPathSeparator(String path) Unify the given path with the current System path separator, to be plateform independent.
protected static boolean	validateEncoding(String charsetName) Validate if a charset is supported on this platform.

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_TIMEOUT

public static final int DEFAULT_TIMEOUT

The default timeout used when fetching url, i.e. 2000.

See Also:

Constant Field Values

ERROR_INIT_VM

protected static final String ERROR_INIT_VM

Error message when VM could not be started using invoker.

See Also:

Constant Field Values

Constructor Detail

JavadocUtil

public JavadocUtil()

Method Detail

pruneDirs

public static List<String> pruneDirs(org.apache.maven.project.MavenProject project,
                                     List<String> dirs)

Method that removes the invalid directories in the specified directories. Note: All elements in dirs could be an absolute or relative against the project's base directory String path.

Parameters:

project - the current Maven project not null

dirs - the list of String directories path that will be validated.

Returns:

a List of valid String directories absolute paths.

pruneFiles

protected static List<String> pruneFiles(List<String> files)

Method that removes the invalid files in the specified files. Note: All elements in files should be an absolute String path.

Parameters:

files - the list of String files paths that will be validated.

Returns:

a List of valid File objects.

shouldPruneFile

public static boolean shouldPruneFile(String f,
                                      List<String> pruned)

Determine whether a file should be excluded from the provided list of paths, based on whether it exists and is already present in the list.

getExcludedNames

protected static List getExcludedNames(List sourcePaths,
                                       String[] subpackagesList,
                                       String[] excludedPackages)

Method that gets all the source files to be excluded from the javadoc on the given source paths.

Parameters:

sourcePaths - the path to the source files

subpackagesList - list of subpackages to be included in the javadoc

excludedPackages - the package names to be excluded in the javadoc

Returns:

a List of the source files to be excluded in the generated javadoc

getCompileArtifacts

protected static List getCompileArtifacts(Set artifacts)

Deprecated. since 2.5, using getCompileArtifacts(Set, boolean) instead of.

Copy from MavenProject.getCompileArtifacts()

Parameters:

artifacts - not null

Returns:

list of compile artifacts with compile scope

getCompileArtifacts

protected static List getCompileArtifacts(Set artifacts,
                                          boolean withTestScope)

Copy from MavenProject.getCompileArtifacts()

Parameters:

artifacts - not null

withTestScope - flag to include or not the artifacts with test scope

Returns:

list of compile artifacts with or without test scope.

quotedArgument

protected static String quotedArgument(String value)

Convenience method to wrap an argument value in single quotes (i.e. '). Intended for values which may contain whitespaces.
To prevent javadoc error, the line separator (i.e. \n) are skipped.

Parameters:

value - the argument value.

Returns:

argument with quote

quotedPathArgument

protected static String quotedPathArgument(String value)

Convenience method to format a path argument so that it is properly interpreted by the javadoc tool. Intended for path values which may contain whitespaces.

Parameters:

value - the argument value.

Returns:

path argument with quote

copyJavadocResources

protected static void copyJavadocResources(File outputDirectory,
                                           File javadocDir)
                                    throws IOException

Deprecated. since 2.5, using copyJavadocResources(File, File, String) instead of.

Convenience method that copy all doc-files directories from javadocDir to the outputDirectory.

Parameters:

outputDirectory - the output directory

javadocDir - the javadoc directory

Throws:

IOException - if any

copyJavadocResources

protected static void copyJavadocResources(File outputDirectory,
                                           File javadocDir,
                                           String excludedocfilessubdir)
                                    throws IOException

Convenience method that copy all doc-files directories from javadocDir to the outputDirectory.

Parameters:

outputDirectory - the output directory

javadocDir - the javadoc directory

excludedocfilessubdir - the excludedocfilessubdir parameter

Throws:

IOException - if any

Since:

2.5

getIncludedFiles

protected static List getIncludedFiles(File sourceDirectory,
                                       String[] fileList,
                                       String[] excludePackages)

Method that gets the files or classes that would be included in the javadocs using the subpackages parameter.

Parameters:

sourceDirectory - the directory where the source files are located

fileList - the list of all files found in the sourceDirectory

excludePackages - package names to be excluded in the javadoc

Returns:

a StringBuffer that contains the appended file names of the files to be included in the javadoc

getExcludedPackages

protected static List getExcludedPackages(String sourceDirectory,
                                          String[] excludePackagenames)

Method that gets the complete package names (including subpackages) of the packages that were defined in the excludePackageNames parameter.

Parameters:

sourceDirectory - the directory where the source files are located

excludePackagenames - package names to be excluded in the javadoc

Returns:

a List of the packagenames to be excluded

addFilesFromSource

protected static void addFilesFromSource(List files,
                                         File sourceDirectory,
                                         String[] excludePackages)

Convenience method that gets the files to be included in the javadoc.

Parameters:

sourceDirectory - the directory where the source files are located

files - the variable that contains the appended filenames of the files to be included in the javadoc

excludePackages - the packages to be excluded in the javadocs

getJavadocVersion

protected static float getJavadocVersion(File javadocExe)
                                  throws IOException,
                                         CommandLineException,
                                         IllegalArgumentException,
                                         PatternSyntaxException

Call the Javadoc tool and parse its output to find its version, i.e.:

 javadoc.exe(or .sh) -J-version
 

Parameters:

javadocExe - not null file

Returns:

the javadoc version as float

Throws:

IOException - if javadocExe is null, doesn't exist or is not a file

CommandLineException - if any

IllegalArgumentException - if no output was found in the command line

PatternSyntaxException - if the output contains a syntax error in the regular-expression pattern.

See Also:

parseJavadocVersion(String)

parseJavadocVersion

protected static float parseJavadocVersion(String output)
                                    throws IllegalArgumentException,
                                           PatternSyntaxException

Parse the output for 'javadoc -J-version' and return the javadoc version recognized.
Here are some output for 'javadoc -J-version' depending the JDK used:

JDK	Output for 'javadoc -J-version'
Sun 1.4	java full version "1.4.2_12-b03"
Sun 1.5	java full version "1.5.0_07-164"
IBM 1.4	javadoc full version "J2RE 1.4.2 IBM Windows 32 build cn1420-20040626"
IBM 1.5 (French JVM)	javadoc version complète de "J2RE 1.5.0 IBM Windows 32 build pwi32pdev-20070426a"
FreeBSD 1.5	java full version "diablo-1.5.0-b01"
BEA jrockit 1.5	java full version "1.5.0_11-b03"

Parameters:

output - for 'javadoc -J-version'

Returns:

the version of the javadoc for the output.

Throws:

PatternSyntaxException - if the output doesn't match with the output pattern (?s).*?([0-9]+\\.[0-9]+)(\\.([0-9]+))?.*.

IllegalArgumentException - if the output is null

parseJavadocMemory

protected static String parseJavadocMemory(String memory)
                                    throws IllegalArgumentException

Parse a memory string which be used in the JVM arguments -Xms or -Xmx.
Here are some supported memory string depending the JDK used:

JDK	Memory argument support for -Xms or -Xmx
SUN	1024k | 128m | 1g | 1t
IBM	1024k | 1024b | 128m | 128mb | 1g | 1gb
BEA	1024k | 1024kb | 128m | 128mb | 1g | 1gb

Parameters:

memory - the memory to be parsed, not null.

Returns:

the memory parsed with a supported unit. If no unit specified in the memory parameter, the default unit is m. The units g | gb or t | tb will be converted in m.

Throws:

IllegalArgumentException - if the memory parameter is null or doesn't match any pattern.

fetchURL

protected static void fetchURL(org.apache.maven.settings.Settings settings,
                               URL url)
                        throws IOException

Fetch an URL

Parameters:

settings - the user settings used to fetch the url with an active proxy, if defined.

url - the url to fetch

Throws:

IOException - if any

See Also:

DEFAULT_TIMEOUT

validateEncoding

protected static boolean validateEncoding(String charsetName)

Validate if a charset is supported on this platform.

Parameters:

charsetName - the charsetName to be check.

Returns:

true if the given charset is supported by the JVM, false otherwise.

hideProxyPassword

protected static String hideProxyPassword(String cmdLine,
                                          org.apache.maven.settings.Settings settings)

For security reasons, if an active proxy is defined and needs an authentication by username/password, hide the proxy password in the command line.

Parameters:

cmdLine - a command line, not null

settings - the user settings

Returns:

the cmdline with '*' for the http.proxyPassword JVM property

getTagletClassNames

protected static List getTagletClassNames(File jarFile)
                                   throws IOException,
                                          ClassNotFoundException,
                                          NoClassDefFoundError

Auto-detect the class names of the implementation of com.sun.tools.doclets.Taglet class from a given jar file.
Note: JAVA_HOME/lib/tools.jar is a requirement to find com.sun.tools.doclets.Taglet class.

Parameters:

jarFile - not null

Returns:

the list of com.sun.tools.doclets.Taglet class names from a given jarFile.

Throws:

IOException - if jarFile is invalid or not found, or if the JAVA_HOME/lib/tools.jar is not found.

ClassNotFoundException - if any

NoClassDefFoundError - if any

copyResource

protected static void copyResource(URL url,
                                   File file)
                            throws IOException

Copy the given url to the given file.

Parameters:

url - not null url

file - not null file where the url will be created

Throws:

IOException - if any

Since:

2.6

invokeMaven

protected static void invokeMaven(org.apache.maven.plugin.logging.Log log,
                                  File localRepositoryDir,
                                  File projectFile,
                                  List goals,
                                  Properties properties,
                                  File invokerLog)
                           throws org.apache.maven.shared.invoker.MavenInvocationException

Invoke Maven for the given project file with a list of goals and properties, the output will be in the invokerlog file.
Note: the Maven Home should be defined in the maven.home Java system property or defined in M2_HOME system env variables.

Parameters:

log - a logger could be null.

localRepositoryDir - the localRepository not null.

projectFile - a not null project file.

goals - a not null goals list.

properties - the properties for the goals, could be null.

invokerLog - the log file where the invoker will be written, if null using System.out.

Throws:

org.apache.maven.shared.invoker.MavenInvocationException - if any

Since:

2.6

readFile

protected static String readFile(File javaFile,
                                 String encoding)

Read the given file and return the content or null if an IOException occurs.

Parameters:

javaFile - not null

encoding - could be null

Returns:

the content with unified line separator of the given javaFile using the given encoding.

Since:

2.6.1

See Also:

FileUtils.fileRead(File, String)

splitPath

protected static String[] splitPath(String path)

Split the given path with colon and semi-colon, to support Solaris and Windows path. Examples:

 splitPath( "/home:/tmp" )     = ["/home", "/tmp"]
 splitPath( "/home;/tmp" )     = ["/home", "/tmp"]
 splitPath( "C:/home:C:/tmp" ) = ["C:/home", "C:/tmp"]
 splitPath( "C:/home;C:/tmp" ) = ["C:/home", "C:/tmp"]
 

Parameters:

path - which can contain multiple paths separated with a colon (:) or a semi-colon (;), plateform independent. Could be null.

Returns:

the path splitted by colon or semi-colon or null if path was null.

Since:

2.6.1

unifyPathSeparator

protected static String unifyPathSeparator(String path)

Unify the given path with the current System path separator, to be plateform independent. Examples:

 unifyPathSeparator( "/home:/tmp" ) = "/home:/tmp" (Solaris box)
 unifyPathSeparator( "/home:/tmp" ) = "/home;/tmp" (Windows box)
 

Parameters:

path - which can contain multiple paths by separating them with a colon (:) or a semi-colon (;), plateform independent. Could be null.

Returns:

the same path but separated with the current System path separator or null if path was null.

Since:

2.6.1

See Also:

splitPath(String), File.pathSeparator

toRelative

public static String toRelative(File basedir,
                                String absolutePath)

isNotEmpty

public static boolean isNotEmpty(Collection<?> collection)

Convenience method to determine that a collection is not empty or null.

isEmpty

public static boolean isEmpty(Collection<?> collection)

Convenience method to determine that a collection is empty or null.