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aQute.bnd.osgi.Domain Maven / Gradle / Ivy
The bndlib project is a general library to be used with OSGi bundles. It contains
lots of cool functionality that calculates dependencies, etc.
package aQute.bnd.osgi;
import static aQute.bnd.osgi.Constants.*;
import java.io.*;
import java.util.*;
import java.util.Map.Entry;
import java.util.jar.*;
import aQute.bnd.header.*;
import aQute.bnd.version.*;
import aQute.lib.converter.*;
import aQute.service.reporter.*;
/**
* This class abstracts domains that have properties holding OSGi meta data. It
* provides access to the keys, the set method and the get method. It then
* provides convenient methods to access these properties via semantic methods.
*/
public abstract class Domain implements Iterable {
final Properties translation = new Properties();
public abstract String get(String key);
public String get(String key, String deflt) {
String result = get(key);
if (result != null)
return result;
return deflt;
}
public String translate(String key) {
return translate(key, null);
}
public String translate(String key, String deflt) {
String value = get(key);
if ( value == null)
return deflt;
if ( value.indexOf('%')>=0) {
value = value.trim().substring(1);
return translation.getProperty(value,value);
}
return null;
}
public abstract void set(String key, String value);
public abstract Iterator iterator();
public static Domain domain(final Manifest manifest) {
Attributes attrs = manifest.getMainAttributes();
return domain(attrs);
}
public static Domain domain(final Attributes attrs) {
return new Domain() {
@Override
public String get(String key) {
return attrs.getValue(key);
}
@Override
public void set(String key, String value) {
attrs.putValue(key, value);
}
@Override
public Iterator iterator() {
final Iterator it = attrs.keySet().iterator();
return new Iterator() {
public boolean hasNext() {
return it.hasNext();
}
public String next() {
return it.next().toString();
}
public void remove() {
it.remove();
}
};
}
};
}
public static Domain domain(final Processor processor) {
return new Domain() {
@Override
public String get(String key) {
return processor.getProperty(key);
}
@Override
public String get(String key, String deflt) {
return processor.getProperty(key, deflt);
}
@Override
public void set(String key, String value) {
processor.setProperty(key, value);
}
@Override
public Iterator iterator() {
final Iterator it = processor.getPropertyKeys(true).iterator();
return new Iterator() {
String current;
public boolean hasNext() {
return it.hasNext();
}
public String next() {
return current = it.next().toString();
}
public void remove() {
processor.getProperties().remove(current);
}
};
}
};
}
public static Domain domain(final Map map) {
return new Domain() {
@Override
public String get(String key) {
return map.get(key);
}
@Override
public void set(String key, String value) {
map.put(key, value);
}
@Override
public Iterator iterator() {
return map.keySet().iterator();
}
};
}
public Parameters getParameters(String key, Reporter reporter) {
return new Parameters(get(key), reporter);
}
public Parameters getParameters(String key) {
return new Parameters(get(key));
}
public Parameters getParameters(String key, String deflt) {
return new Parameters(get(key, deflt));
}
public Parameters getParameters(String key, String deflt, Reporter reporter) {
return new Parameters(get(key, deflt), reporter);
}
public Parameters getRequireBundle() {
return getParameters(Constants.REQUIRE_BUNDLE);
}
public Parameters getImportPackage() {
return getParameters(IMPORT_PACKAGE);
}
public Parameters getExportPackage() {
return getParameters(EXPORT_PACKAGE);
}
public Parameters getBundleClassPath() {
return getParameters(BUNDLE_CLASSPATH);
}
public Parameters getPrivatePackage() {
return getParameters(PRIVATE_PACKAGE);
}
public Parameters getIncludeResource() {
Parameters ic = getParameters(INCLUDE_RESOURCE);
ic.putAll(getParameters(INCLUDERESOURCE));
ic.putAll(getParameters(WAB));
return ic;
}
public Parameters getDynamicImportPackage() {
return getParameters(DYNAMICIMPORT_PACKAGE);
}
public Parameters getExportContents() {
return getParameters(EXPORT_CONTENTS);
}
public String getBundleActivator() {
return get(BUNDLE_ACTIVATOR);
}
public void setPrivatePackage(String s) {
if (s != null)
set(PRIVATE_PACKAGE, s);
}
public void setIncludeResource(String s) {
if (s != null)
set(INCLUDE_RESOURCE, s);
}
public void setBundleActivator(String s) {
if (s != null)
set(BUNDLE_ACTIVATOR, s);
}
public void setExportPackage(String s) {
if (s != null)
set(EXPORT_PACKAGE, s);
}
public void setImportPackage(String s) {
if (s != null)
set(IMPORT_PACKAGE, s);
}
public void setBundleClasspath(String s) {
if (s != null)
set(BUNDLE_CLASSPATH, s);
}
public Parameters getBundleClasspath() {
return getParameters(BUNDLE_CLASSPATH);
}
public void setBundleRequiredExecutionEnvironment(String s) {
if (s != null)
set(BUNDLE_REQUIREDEXECUTIONENVIRONMENT, s);
}
public Parameters getBundleRequiredExecutionEnvironment() {
return getParameters(BUNDLE_REQUIREDEXECUTIONENVIRONMENT);
}
public void setSources(boolean b) {
if (b)
set(SOURCES, "true");
else
set(SOURCES, "false");
}
public boolean isSources() {
return Processor.isTrue(get(SOURCES));
}
public Map.Entry getBundleSymbolicName() {
Parameters p = getParameters(BUNDLE_SYMBOLICNAME);
if (p.isEmpty())
return null;
return p.entrySet().iterator().next();
}
public Map.Entry getFragmentHost() {
Parameters p = getParameters(FRAGMENT_HOST);
if (p.isEmpty())
return null;
return p.entrySet().iterator().next();
}
public void setBundleSymbolicName(String s) {
set(BUNDLE_SYMBOLICNAME, s);
}
public String getBundleVersion() {
return get(BUNDLE_VERSION);
}
public void setBundleVersion(String version) {
Version v = new Version(version);
set(BUNDLE_VERSION, v.toString());
}
public void setBundleVersion(Version version) {
set(BUNDLE_VERSION, version.toString());
}
public void setFailOk(boolean b) {
set(FAIL_OK, b + "");
}
public boolean isFailOk() {
return Processor.isTrue(get(FAIL_OK));
}
/**
* Find an icon with the requested size in the list of icons.
*
* @param requestedSize
* the number of pixels desired
* @return null or a the selected URI (which may be relative)
*/
public String getIcon(int requestedSize) throws Exception {
String spec = get(Constants.BUNDLE_ICON);
if (spec == null)
return null;
Parameters p = OSGiHeader.parseHeader(spec);
int dist = Integer.MAX_VALUE;
String selected = null;
for (Entry e : p.entrySet()) {
String url = e.getKey();
if (selected == null)
selected = url;
if (e.getValue() != null) {
String s = e.getValue().get("size");
if (s != null) {
int size = Converter.cnv(Integer.class, s);
if (size != 0 && Math.abs(requestedSize - size) < dist) {
dist = Math.abs(requestedSize - size);
selected = url;
}
}
}
}
return selected;
}
public void setConditionalPackage(String string) {
set(CONDITIONAL_PACKAGE, string);
}
public void setTranslation(Jar jar) throws Exception {
Manifest m = jar.getManifest();
if (m == null)
return;
String path = m.getMainAttributes().getValue(Constants.BUNDLE_LOCALIZATION);
if (path == null)
path = org.osgi.framework.Constants.BUNDLE_LOCALIZATION_DEFAULT_BASENAME;
path += ".properties";
Resource propsResource = jar.getResource(path);
if (propsResource != null) {
InputStream in = propsResource.openInputStream();
try {
translation.load(in);
}
finally {
in.close();
}
}
}
public Parameters getRequireCapability() {
return getParameters(Constants.REQUIRE_CAPABILITY);
}
public Parameters getProvideCapability() {
return getParameters(Constants.PROVIDE_CAPABILITY);
}
}
