@@ -70,25 +70,17 @@ import java.util.jar.Manifest;
* Java2 Standard Edition package, in file
* <code>guide/extensions/versioning.html</code>.</p>
*
* WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
* This file is from excalibur.extension package. Dont edit this file
* directly as there is no unit tests to make sure it is operational
* in ant. Edit file in excalibur and run tests there before changing
* ants file.
* WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
*
* @author <a href="mailto:craigmcc@apache.org">Craig R. McClanahan</a>
* @author <a href="mailto:peter@apache.org">Peter Donald</a>
* @version $Revision$ $Date$
*/
public final class Extension
{
public final class Extension {
/**
* Manifest Attribute Name object for EXTENSION_LIST.
* @see Attributes.Name#EXTENSION_LIST
*/
public static final Attributes.Name EXTENSION_LIST =
new Attributes.Name( "Extension-List" );//Attributes.Name.EXTENSION_LIST;
public static final Attributes.Name EXTENSION_LIST
= new Attributes.Name("Extension-List");
/**
* <code>Name</code> object for <code>Optional-Extension-List</code>
@@ -100,79 +92,83 @@ public final class Extension
* @see <a href="http://java.sun.com/j2se/1.3/docs/guide/extensions/spec.html#dependnecy">
* Installed extension dependency</a>
*/
public static final Attributes.Name OPTIONAL_EXTENSION_LIST =
new Attributes.Name( "Optional-Extension-List" );
public static final Attributes.Name OPTIONAL_EXTENSION_LIST
= new Attributes.Name("Optional-Extension-List");
/**
* Manifest Attribute Name object for EXTENSION_NAME.
* @see Attributes.Name#EXTENSION_NAME
*/
public static final Attributes.Name EXTENSION_NAME =
new Attributes.Name( "Extension-Name" );//Attributes.Name.EXTENSION_NAME;
new Attributes.Name("Extension-Name");
/**
* Manifest Attribute Name object for SPECIFICATION_VERSION.
* @see Attributes.Name#SPECIFICATION_VERSION
*/
public static final Attributes.Name SPECIFICATION_VERSION = Attributes.Name.SPECIFICATION_VERSION;
public static final Attributes.Name SPECIFICATION_VERSION
= Attributes.Name.SPECIFICATION_VERSION;
/**
* Manifest Attribute Name object for SPECIFICATION_VENDOR.
* @see Attributes.Name#SPECIFICATION_VENDOR
*/
public static final Attributes.Name SPECIFICATION_VENDOR = Attributes.Name.SPECIFICATION_VENDOR;
public static final Attributes.Name SPECIFICATION_VENDOR
= Attributes.Name.SPECIFICATION_VENDOR;
/**
* Manifest Attribute Name object for IMPLEMENTATION_VERSION.
* @see Attributes.Name#IMPLEMENTATION_VERSION
*/
public static final Attributes.Name IMPLEMENTATION_VERSION = Attributes.Name.IMPLEMENTATION_VERSION;
public static final Attributes.Name IMPLEMENTATION_VERSION
= Attributes.Name.IMPLEMENTATION_VERSION;
/**
* Manifest Attribute Name object for IMPLEMENTATION_VENDOR.
* @see Attributes.Name#IMPLEMENTATION_VENDOR
*/
public static final Attributes.Name IMPLEMENTATION_VENDOR = Attributes.Name.IMPLEMENTATION_VENDOR;
public static final Attributes.Name IMPLEMENTATION_VENDOR
= Attributes.Name.IMPLEMENTATION_VENDOR;
/**
* Manifest Attribute Name object for IMPLEMENTATION_URL.
* @see Attributes.Name#IMPLEMENTATION_URL
*/
public static final Attributes.Name IMPLEMENTATION_URL =
new Attributes.Name( "Implementation-URL" );//Attributes.Name.IMPLEMENTATION_URL;
public static final Attributes.Name IMPLEMENTATION_URL
= new Attributes.Name("Implementation-URL");
/**
* Manifest Attribute Name object for IMPLEMENTATION_VENDOR_ID.
* @see Attributes.Name#IMPLEMENTATION_VENDOR_ID
*/
public static final Attributes.Name IMPLEMENTATION_VENDOR_ID =
new Attributes.Name( "Implementation-Vendor-Id" );//Attributes.Name.IMPLEMENTATION_VENDOR_ID;
public static final Attributes.Name IMPLEMENTATION_VENDOR_ID
= new Attributes.Name("Implementation-Vendor-Id");
/**
* Enum indicating that extension is compatible with other extension.
*/
public static final Compatibility COMPATIBLE =
new Compatibility( "COMPATIBLE" );
public static final Compatibility COMPATIBLE
= new Compatibility("COMPATIBLE");
/**
* Enum indicating that extension requires an upgrade
* of specification to be compatible with other extension.
*/
public static final Compatibility REQUIRE_SPECIFICATION_UPGRADE =
new Compatibility( "REQUIRE_SPECIFICATION_UPGRADE" );
public static final Compatibility REQUIRE_SPECIFICATION_UPGRADE
= new Compatibility("REQUIRE_SPECIFICATION_UPGRADE");
/**
* Enum indicating that extension requires a vendor
* switch to be compatible with other extension.
*/
public static final Compatibility REQUIRE_VENDOR_SWITCH =
new Compatibility( "REQUIRE_VENDOR_SWITCH" );
public static final Compatibility REQUIRE_VENDOR_SWITCH
= new Compatibility("REQUIRE_VENDOR_SWITCH");
/**
* Enum indicating that extension requires an upgrade
* of implementation to be compatible with other extension.
*/
public static final Compatibility REQUIRE_IMPLEMENTATION_UPGRADE =
new Compatibility( "REQUIRE_IMPLEMENTATION_UPGRADE" );
public static final Compatibility REQUIRE_IMPLEMENTATION_UPGRADE
= new Compatibility("REQUIRE_IMPLEMENTATION_UPGRADE");
/**
* Enum indicating that extension is incompatible with
@@ -180,49 +176,49 @@ public final class Extension
* indicate). For example the other extension may have
* a different ID.
*/
public static final Compatibility INCOMPATIBLE =
new Compatibility( "INCOMPATIBLE" );
public static final Compatibility INCOMPATIBLE
= new Compatibility("INCOMPATIBLE");
/**
* The name of the optional package being made available, or required.
*/
private String m_ extensionName;
private String extensionName;
/**
* The version number (dotted decimal notation) of the specification
* to which this optional package conforms.
*/
private DeweyDecimal m_ specificationVersion;
private DeweyDecimal specificationVersion;
/**
* The name of the company or organization that originated the
* specification to which this optional package conforms.
*/
private String m_ specificationVendor;
private String specificationVendor;
/**
* The unique identifier of the company that produced the optional
* package contained in this JAR file.
*/
private String m_ implementationVendorID;
private String implementationVendorID;
/**
* The name of the company or organization that produced this
* implementation of this optional package.
*/
private String m_ implementationVendor;
private String implementationVendor;
/**
* The version number (dotted decimal notation) for this implementation
* of the optional package.
*/
private DeweyDecimal m_ implementationVersion;
private DeweyDecimal implementationVersion;
/**
* The URL from which the most recent version of this optional package
* can be obtained if it is not already installed.
*/
private String m_ implementationURL;
private String implementationURL;
/**
* Return an array of <code>Extension</code> objects representing optional
@@ -233,39 +229,33 @@ public final class Extension
* @param manifest Manifest to be parsed
* @return the "available" extensions in specified manifest
*/
public static Extension[] getAvailable( final Manifest manifest )
{
if( null == manifest )
{
public static Extension[] getAvailable(final Manifest manifest) {
if (null == manifest) {
return new Extension[ 0 ];
}
final ArrayList results = new ArrayList();
final Attributes mainAttributes = manifest.getMainAttributes();
if( null != mainAttributes )
{
final Extension extension = getExtension( "", mainAttributes );
if( null != extension )
{
results.add( extension );
if (null != mainAttributes) {
final Extension extension = getExtension("", mainAttributes);
if (null != extension) {
results.add(extension);
}
}
final Map entries = manifest.getEntries();
final Iterator keys = entries.keySet().iterator();
while( keys.hasNext() )
{
final String key = (String)keys.next();
final Attributes attributes = (Attributes)entries.get( key );
final Extension extension = getExtension( "", attributes );
if( null != extension )
{
results.add( extension );
while (keys.hasNext()) {
final String key = (String) keys.next();
final Attributes attributes = (Attributes) entries.get(key);
final Extension extension = getExtension("", attributes);
if (null != extension) {
results.add(extension);
}
}
return (Extension[])results.toArray( new Extension[ 0 ] );
return (Extension[]) results.toArray(new Extension[0]);
}
/**
@@ -277,9 +267,8 @@ public final class Extension
* @param manifest Manifest to be parsed
* @return the dependencies that are specified in manifes
*/
public static Extension[] getRequired( final Manifest manifest )
{
return getListed( manifest, EXTENSION_LIST );
public static Extension[] getRequired(final Manifest manifest) {
return getListed(manifest, Attributes.Name.EXTENSION_LIST);
}
/**
@@ -290,9 +279,8 @@ public final class Extension
* @param manifest Manifest to be parsed
* @return the optional dependencies that are specified in manifest
*/
public static Extension[] getOptions( final Manifest manifest )
{
return getListed( manifest, OPTIONAL_EXTENSION_LIST );
public static Extension[] getOptions(final Manifest manifest) {
return getListed(manifest, OPTIONAL_EXTENSION_LIST);
}
/**
@@ -301,10 +289,9 @@ public final class Extension
* @param attributes the attributes of manifest to add to
* @param extension the extension
*/
public static void addExtension( final Extension extension,
final Attributes attributes )
{
addExtension( extension, "", attributes );
public static void addExtension(final Extension extension,
final Attributes attributes) {
addExtension(extension, "", attributes);
}
/**
@@ -316,53 +303,49 @@ public final class Extension
* @param extension the extension
* @param prefix the name to prefix to extension
*/
public static void addExtension( final Extension extension,
public static void addExtension(final Extension extension,
final String prefix,
final Attributes attributes )
{
attributes.putValue( prefix + EXTENSION_NAME,
extension.getExtensionName() );
final Attributes attributes) {
attributes.putValue(prefix + EXTENSION_NAME,
extension.getExtensionName());
final String specificationVendor = extension.getSpecificationVendor();
if( null != specificationVendor )
{
attributes.putValue( prefix + SPECIFICATION_VENDOR,
specificationVendor );
if (null != specificationVendor) {
attributes.putValue(prefix + SPECIFICATION_VENDOR,
specificationVendor);
}
final DeweyDecimal specificationVersion = extension.getSpecificationVersion();
if( null != specificationVersion )
{
attributes.putValue( prefix + SPECIFICATION_VERSION,
specificationVersion.toString() );
final DeweyDecimal specificationVersion
= extension.getSpecificationVersion();
if (null != specificationVersion) {
attributes.putValue(prefix + SPECIFICATION_VERSION,
specificationVersion.toString());
}
final String implementationVendorID = extension.getImplementationVendorID();
if( null != implementationVendorID )
{
attributes.putValue( prefix + IMPLEMENTATION_VENDOR_ID,
implementationVendorID );
final String implementationVendorID
= extension.getImplementationVendorID();
if (null != implementationVendorID) {
attributes.putValue(prefix + IMPLEMENTATION_VENDOR_ID,
implementationVendorID);
}
final String implementationVendor = extension.getImplementationVendor();
if( null != implementationVendor )
{
attributes.putValue( prefix + IMPLEMENTATION_VENDOR,
implementationVendor );
if (null != implementationVendor) {
attributes.putValue(prefix + IMPLEMENTATION_VENDOR,
implementationVendor);
}
final DeweyDecimal implementationVersion = extension.getImplementationVersion();
if( null != implementationVersion )
{
attributes.putValue( prefix + IMPLEMENTATION_VERSION,
implementationVersion.toString() );
final DeweyDecimal implementationVersion
= extension.getImplementationVersion();
if (null != implementationVersion) {
attributes.putValue(prefix + IMPLEMENTATION_VERSION,
implementationVersion.toString());
}
final String implementationURL = extension.getImplementationURL();
if( null != implementationURL )
{
attributes.putValue( prefix + IMPLEMENTATION_URL,
implementationURL );
if (null != implementationURL) {
attributes.putValue(prefix + IMPLEMENTATION_URL,
implementationURL);
}
}
@@ -379,52 +362,46 @@ public final class Extension
* @param implementationVendorId the implementation VendorId of extension.
* @param implementationURL the implementation URL of extension.
*/
public Extension( final String extensionName,
public Extension(final String extensionName,
final String specificationVersion,
final String specificationVendor,
final String implementationVersion,
final String implementationVendor,
final String implementationVendorId,
final String implementationURL )
{
m_extensionName = extensionName;
m_specificationVendor = specificationVendor;
if( null != specificationVersion )
{
try
{
m_specificationVersion = new DeweyDecimal( specificationVersion );
}
catch( final NumberFormatException nfe )
{
final String error = "Bad specification version format '" + specificationVersion +
"' in '" + extensionName + "'. (Reason: " + nfe + ")";
throw new IllegalArgumentException( error );
final String implementationURL) {
this.extensionName = extensionName;
this.specificationVendor = specificationVendor;
if (null != specificationVersion) {
try {
this.specificationVersion
= new DeweyDecimal(specificationVersion);
} catch (final NumberFormatException nfe) {
final String error = "Bad specification version format '"
+ specificationVersion + "' in '" + extensionName
+ "'. (Reason: " + nfe + ")";
throw new IllegalArgumentException(error);
}
}
m_implementationURL = implementationURL;
m_implementationVendor = implementationVendor;
m_implementationVendorID = implementationVendorId;
if( null != implementationVersion )
{
try
{
m_implementationVersion = new DeweyDecimal( implementationVersion );
}
catch( final NumberFormatException nfe )
{
final String error = "Bad implementation version format '" + implementationVersion +
"' in '" + extensionName + "'. (Reason: " + nfe + ")";
throw new IllegalArgumentException( error );
this.implementationURL = implementationURL;
this.implementationVendor = implementationVendor;
this.implementationVendorID = implementationVendorId;
if (null != implementationVersion) {
try {
this.implementationVersion
= new DeweyDecimal(implementationVersion);
} catch (final NumberFormatException nfe) {
final String error = "Bad implementation version format '"
+ implementationVersion + "' in '" + extensionName
+ "'. (Reason: " + nfe + ")";
throw new IllegalArgumentException(error);
}
}
if( null == m_extensionName )
{
throw new NullPointerException( "extensionName property is null" );
if (null == this.extensionName) {
throw new NullPointerException("extensionName property is null");
}
}
@@ -433,9 +410,8 @@ public final class Extension
*
* @return the name of the extension
*/
public String getExtensionName()
{
return m_extensionName;
public String getExtensionName() {
return extensionName;
}
/**
@@ -443,9 +419,8 @@ public final class Extension
*
* @return the vendor of the extensions specification.
*/
public String getSpecificationVendor()
{
return m_specificationVendor;
public String getSpecificationVendor() {
return specificationVendor;
}
/**
@@ -453,9 +428,8 @@ public final class Extension
*
* @return the version of the extensions specification.
*/
public DeweyDecimal getSpecificationVersion()
{
return m_specificationVersion;
public DeweyDecimal getSpecificationVersion() {
return specificationVersion;
}
/**
@@ -463,9 +437,8 @@ public final class Extension
*
* @return the url of the extensions implementation.
*/
public String getImplementationURL()
{
return m_implementationURL;
public String getImplementationURL() {
return implementationURL;
}
/**
@@ -473,9 +446,8 @@ public final class Extension
*
* @return the vendor of the extensions implementation.
*/
public String getImplementationVendor()
{
return m_implementationVendor;
public String getImplementationVendor() {
return implementationVendor;
}
/**
@@ -483,9 +455,8 @@ public final class Extension
*
* @return the vendorID of the extensions implementation.
*/
public String getImplementationVendorID()
{
return m_implementationVendorID;
public String getImplementationVendorID() {
return implementationVendorID;
}
/**
@@ -493,9 +464,8 @@ public final class Extension
*
* @return the version of the extensions implementation.
*/
public DeweyDecimal getImplementationVersion()
{
return m_implementationVersion;
public DeweyDecimal getImplementationVersion() {
return implementationVersion;
}
/**
@@ -506,43 +476,38 @@ public final class Extension
* @return the enum indicating the compatibility (or lack thereof)
* of specifed extension
*/
public Compatibility getCompatibilityWith( final Extension required )
{
public Compatibility getCompatibilityWith(final Extension required) {
// Extension Name must match
if( !m_extensionName.equals( required.getExtensionName() ) )
{
if (!extensionName.equals(required.getExtensionName())) {
return INCOMPATIBLE;
}
// Available specification version must be >= required
final DeweyDecimal specificationVersion = required.getSpecificationVersion();
if( null != specificationVersion )
{
if( null == m_specificationVersion ||
!isCompatible( m_specificationVersion, specificationVersion ) )
{
final DeweyDecimal specificationVersion
= required.getSpecificationVersion();
if (null != specificationVersion) {
if (null == specificationVersion
|| !isCompatible(specificationVersion, specificationVersion)) {
return REQUIRE_SPECIFICATION_UPGRADE;
}
}
// Implementation Vendor ID must match
final String implementationVendorId = required.getImplementationVendorID();
if( null != implementationVendorId )
{
if( null == m_implementationVendorID ||
!m_implementationVendorID.equals( implementationVendorId ) )
{
final String implementationVendorId
= required.getImplementationVendorID();
if (null != implementationVendorId) {
if (null == implementationVendorID
|| !implementationVendorID.equals(implementationVendorId)) {
return REQUIRE_VENDOR_SWITCH;
}
}
// Implementation version must be >= required
final DeweyDecimal implementationVersion = required.getImplementationVersion();
if( null != implementationVersion )
{
if( null == m_implementationVersion ||
!isCompatible( m_implementationVersion, implementationVersion ) )
{
final DeweyDecimal implementationVersion
= required.getImplementationVersion();
if (null != implementationVersion) {
if (null == implementationVersion
|| !isCompatible(implementationVersion, implementationVersion)) {
return REQUIRE_IMPLEMENTATION_UPGRADE;
}
}
@@ -561,9 +526,8 @@ public final class Extension
* @param required Description of the required optional package
* @return true if the specified extension is compatible with this extension
*/
public boolean isCompatibleWith( final Extension required )
{
return ( COMPATIBLE == getCompatibilityWith( required ) );
public boolean isCompatibleWith(final Extension required) {
return (COMPATIBLE == getCompatibilityWith(required));
}
/**
@@ -571,62 +535,55 @@ public final class Extension
*
* @return string representation of object.
*/
public String toString()
{
final String lineSeparator = System.getProperty( "line.separator" );
public String toString() {
final String lineSeparator = System.getProperty("line.separator");
final String brace = ": ";
final StringBuffer sb = new StringBuffer( EXTENSION_NAME.toString() );
sb.append( brace );
sb.append( m_extensionName );
sb.append( lineSeparator );
if( null != m_specificationVersion )
{
sb.append( SPECIFICATION_VERSION );
sb.append( brace );
sb.append( m_specificationVersion );
sb.append( lineSeparator );
final StringBuffer sb = new StringBuffer(EXTENSION_NAME.toString());
sb.append(brace);
sb.append(extensionName);
sb.append(lineSeparator);
if (null != specificationVersion) {
sb.append(SPECIFICATION_VERSION);
sb.append(brace);
sb.append(specificationVersion);
sb.append(lineSeparator);
}
if( null != m_specificationVendor )
{
sb.append( SPECIFICATION_VENDOR );
sb.append( brace );
sb.append( m_specificationVendor );
sb.append( lineSeparator );
if (null != specificationVendor) {
sb.append(SPECIFICATION_VENDOR);
sb.append(brace);
sb.append(specificationVendor);
sb.append(lineSeparator);
}
if( null != m_implementationVersion )
{
sb.append( IMPLEMENTATION_VERSION );
sb.append( brace );
sb.append( m_implementationVersion );
sb.append( lineSeparator );
if (null != implementationVersion) {
sb.append(IMPLEMENTATION_VERSION);
sb.append(brace);
sb.append(implementationVersion);
sb.append(lineSeparator);
}
if( null != m_implementationVendorID )
{
sb.append( IMPLEMENTATION_VENDOR_ID );
sb.append( brace );
sb.append( m_implementationVendorID );
sb.append( lineSeparator );
if (null != implementationVendorID) {
sb.append(IMPLEMENTATION_VENDOR_ID);
sb.append(brace);
sb.append(implementationVendorID);
sb.append(lineSeparator);
}
if( null != m_implementationVendor )
{
sb.append( IMPLEMENTATION_VENDOR );
sb.append( brace );
sb.append( m_implementationVendor );
sb.append( lineSeparator );
if (null != implementationVendor) {
sb.append(IMPLEMENTATION_VENDOR);
sb.append(brace);
sb.append(implementationVendor);
sb.append(lineSeparator);
}
if( null != m_implementationURL )
{
sb.append( IMPLEMENTATION_URL );
sb.append( brace );
sb.append( m_implementationURL );
sb.append( lineSeparator );
if (null != implementationURL) {
sb.append(IMPLEMENTATION_URL);
sb.append(brace);
sb.append(implementationURL);
sb.append(lineSeparator);
}
return sb.toString();
@@ -639,9 +596,9 @@ public final class Extension
* @param first First version number (dotted decimal)
* @param second Second version number (dotted decimal)
*/
private boolean isCompatible( final DeweyDecimal first, final DeweyDecimal second )
{
return first.isGreaterThanOrEqual( second );
private boolean isCompatible(final DeweyDecimal first,
final DeweyDecimal second) {
return first.isGreaterThanOrEqual(second);
}
/**
@@ -653,56 +610,50 @@ public final class Extension
* EXTENSION_LIST or OPTIONAL_EXTENSION_LIST)
* @return the list of listed extensions
*/
private static Extension[] getListed( final Manifest manifest,
final Attributes.Name listKey )
{
private static Extension[] getListed(final Manifest manifest,
final Attributes.Name listKey) {
final ArrayList results = new ArrayList();
final Attributes mainAttributes = manifest.getMainAttributes();
if( null != mainAttributes )
{
getExtension( mainAttributes, results, listKey );
if (null != mainAttributes) {
getExtension(mainAttributes, results, listKey);
}
final Map entries = manifest.getEntries();
final Iterator keys = entries.keySet().iterator();
while( keys.hasNext() )
{
final String key = (String)keys.next();
final Attributes attributes = (Attributes)entries.get( key );
getExtension( attributes, results, listKey );
while (keys.hasNext()) {
final String key = (String) keys.next();
final Attributes attributes = (Attributes) entries.get(key);
getExtension(attributes, results, listKey);
}
return (Extension[])results.toArray( new Extension[ 0 ] );
return (Extension[]) results.toArray(new Extension[ 0 ]);
}
/**
* Add required optional packages defined in the specified attributes entry, if any.
* Add required optional packages defined in the specified
* attributes entry, if any.
*
* @param attributes Attributes to be parsed
* @param required list to add required optional packages to
* @param listKey the key to use to lookup list, usually EXTENSION_LIST
* or OPTIONAL_EXTENSION_LIST
*/
private static void getExtension( final Attributes attributes,
private static void getExtension(final Attributes attributes,
final ArrayList required,
final Attributes.Name listKey )
{
final String names = attributes.getValue( listKey );
if( null == names )
{
final Attributes.Name listKey) {
final String names = attributes.getValue(listKey);
if (null == names) {
return;
}
final String[] extentions = split( names, " " );
for( int i = 0; i < extentions.length; i++ )
{
final String[] extentions = split(names, " ");
for (int i = 0; i < extentions.length; i++) {
final String prefix = extentions[ i ] + "-";
final Extension extension = getExtension( prefix, attributes );
final Extension extension = getExtension(prefix, attributes);
if( null != extension )
{
required.add( extension );
if (null != extension) {
required.add(extension);
}
}
}
@@ -714,13 +665,12 @@ public final class Extension
* @param onToken the token
* @return the resultant array
*/
private static final String[] split( final String string, final String onToken )
{
final StringTokenizer tokenizer = new StringTokenizer( string, onToken );
private static final String[] split(final String string,
final String onToken) {
final StringTokenizer tokenizer = new StringTokenizer(string, onToken);
final String[] result = new String[ tokenizer.countTokens() ];
for( int i = 0; i < result.length; i++ )
{
for (int i = 0; i < result.length; i++) {
result[ i ] = tokenizer.nextToken();
}
@@ -731,41 +681,46 @@ public final class Extension
* Extract an Extension from Attributes.
* Prefix indicates the prefix checked for each string.
* Usually the prefix is <em>"<extension>-"</em> if looking for a
* <b>Required</b> extension. If you are looking for an <b>Available</b> extension
* <b>Required</b> extension. If you are looking for an
* <b>Available</b> extension
* then the prefix is <em>""</em>.
*
* @param prefix the prefix for each attribute name
* @param attributes Attributes to searched
* @return the new Extension object, or null
*/
private static Extension getExtension( final String prefix, final Attributes attributes )
{
private static Extension getExtension(final String prefix,
final Attributes attributes) {
//WARNING: We trim the values of all the attributes because
//Some extension declarations are badly defined (ie have spaces
//after version or vendorID)
final String nameKey = prefix + EXTENSION_NAME;
final String name = getTrimmedString( attributes.getValue( nameKey ) );
if( null == name )
{
final String name = getTrimmedString(attributes.getValue(nameKey));
if (null == name) {
return null;
}
final String specVendorKey = prefix + SPECIFICATION_VENDOR;
final String specVendor = getTrimmedString( attributes.getValue( specVendorKey ) );
final String specVendor
= getTrimmedString(attributes.getValue(specVendorKey));
final String specVersionKey = prefix + SPECIFICATION_VERSION;
final String specVersion = getTrimmedString( attributes.getValue( specVersionKey ) );
final String specVersion
= getTrimmedString(attributes.getValue(specVersionKey));
final String impVersionKey = prefix + IMPLEMENTATION_VERSION;
final String impVersion = getTrimmedString( attributes.getValue( impVersionKey ) );
final String impVersion
= getTrimmedString(attributes.getValue(impVersionKey));
final String impVendorKey = prefix + IMPLEMENTATION_VENDOR;
final String impVendor = getTrimmedString( attributes.getValue( impVendorKey ) );
final String impVendor
= getTrimmedString(attributes.getValue(impVendorKey));
final String impVendorIDKey = prefix + IMPLEMENTATION_VENDOR_ID;
final String impVendorId = getTrimmedString( attributes.getValue( impVendorIDKey ) );
final String impVendorId
= getTrimmedString(attributes.getValue(impVendorIDKey));
final String impURLKey = prefix + IMPLEMENTATION_URL;
final String impURL = getTrimmedString( attributes.getValue( impURLKey ) );
final String impURL = getTrimmedString(attributes.getValue(impURLKey));
return new Extension( name, specVersion, specVendor, impVersion,
impVendor, impVendorId, impURL );
return new Extension(name, specVersion, specVendor, impVersion,
impVendor, impVendorId, impURL);
}
/**
@@ -774,14 +729,10 @@ public final class Extension
* @param value the string to trim or null
* @return the trimmed string or null
*/
private static String getTrimmedString( final String value )
{
if( null == value )
{
private static String getTrimmedString(final String value) {
if (null == value) {
return null;
}
else
{
} else {
return value.trim();
}
}
Conor MacNeill