org.daisy.pipeline.braille.pef.impl.LocaleBasedTableProvider Maven / Gradle / Ivy
package org.daisy.pipeline.braille.pef.impl;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Set;
import com.google.common.collect.ImmutableSet;
import org.daisy.dotify.api.factory.FactoryProperties;
import org.daisy.dotify.api.table.Table;
import org.daisy.pipeline.braille.common.Query;
import org.daisy.pipeline.braille.common.Query.Feature;
import org.daisy.pipeline.braille.common.Query.MutableQuery;
import static org.daisy.pipeline.braille.common.Query.util.mutableQuery;
import static org.daisy.pipeline.braille.common.util.Locales.parseLocale;
import org.daisy.pipeline.braille.pef.AbstractTableProvider;
import org.daisy.pipeline.braille.pef.TableProvider;
import org.daisy.pipeline.common.NormalizeLang;
import org.osgi.service.component.annotations.Activate;
import org.osgi.service.component.annotations.Component;
import org.osgi.service.component.annotations.Reference;
import org.osgi.service.component.annotations.ReferenceCardinality;
import org.osgi.service.component.annotations.ReferencePolicy;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* @see Documentation
*/
@Component(
name = "org.daisy.pipeline.braille.pef.impl.LocaleTableProvider",
service = {
TableProvider.class
// org.daisy.dotify.api.table.TableProvider.class
}
)
public class LocaleBasedTableProvider extends AbstractTableProvider {
private static Set supportedFeatures = ImmutableSet.of("locale", "document-locale");
private static Map tableFromLocale = new HashMap<>();
@Activate
protected void init() {
putTable("org_daisy.EmbosserTableProvider.TableType.CS_CZ", parseLocale("cs"));
putTable("org_daisy.EmbosserTableProvider.TableType.DA_DK", parseLocale("da"));
putTable("org_daisy.EmbosserTableProvider.TableType.DE_DE", parseLocale("de"));
putTable("org.daisy.braille.impl.table.DefaultTableProvider.TableType.EN_US", parseLocale("en"));
putTable("org_daisy.EmbosserTableProvider.TableType.EN_GB", parseLocale("en-GB"));
putTable("org.daisy.braille.impl.table.DefaultTableProvider.TableType.EN_US", parseLocale("en-US"));
putTable("org_daisy.EmbosserTableProvider.TableType.ES_ES_TABLE_2", parseLocale("es"));
putTable("org_daisy.EmbosserTableProvider.TableType.IT_IT_FIRENZE", parseLocale("it"));
putTable("com_braillo.BrailloTableProvider.TableType.BRAILLO_6DOT_047_01", parseLocale("nb"));
putTable("com_braillo.BrailloTableProvider.TableType.BRAILLO_6DOT_031_01", parseLocale("nl"));
putTable("com_braillo.BrailloTableProvider.TableType.BRAILLO_6DOT_047_01", parseLocale("no"),
parseLocale("nn"),
parseLocale("nb"));
putTable("com_braillo.BrailloTableProvider.TableType.BRAILLO_6DOT_046_01", parseLocale("sv"));
}
private void putTable(String id, Locale... locales) {
for (org.daisy.dotify.api.table.TableProvider p : providers)
for (FactoryProperties fp : p.list())
if (fp.getIdentifier().equals(id)) {
TableProxy table = null;
for (Locale locale : locales) {
if (table == null)
table = new TableProxy(fp, p, locale);
tableFromLocale.put(locale, table);
}
break;
}
}
private Collection properties = null;
@Override
public Collection list() {
if (properties == null)
properties = Collections.unmodifiableCollection(new HashSet<>(tableFromLocale.values()));
return properties;
}
/**
* Recognized features:
*
* - locale: A locale that is mapped to a specific table
* that is a sane default for that locale.
*/
@Override
protected Iterable _get(Query query) {
for (Feature feature : query)
if (!supportedFeatures.contains(feature.getKey())) {
logger.debug("Unsupported feature: " + feature);
return empty; }
Iterable table = empty;
MutableQuery q = mutableQuery(query);
Locale documentLocale; {
try {
documentLocale = q.containsKey("document-locale")
? NormalizeLang.normalize(parseLocale(q.removeOnly("document-locale").getValue().get()))
: null; }
catch (IllegalArgumentException e) {
logger.error("Invalid locale", e);
documentLocale = null; }}
if (q.containsKey("locale")) {
Locale locale; {
try {
locale = NormalizeLang.normalize(parseLocale(q.removeOnly("locale").getValue().get())); }
catch (IllegalArgumentException e) {
logger.error("Invalid locale", e);
return empty; }}
if (q.isEmpty()) {
TableProxy t = tableFromLocale.get(locale);
if (t == null)
t = tableFromLocale.get(new Locale(locale.getLanguage()));
if (t != null)
table = Collections.singleton(t.getTable()); }}
else if (documentLocale != null && q.isEmpty()) {
TableProxy t = tableFromLocale.get(documentLocale);
if (t == null)
t = tableFromLocale.get(new Locale(documentLocale.getLanguage()));
if (t != null)
table = Collections.singleton(t.getTable()); }
return table;
}
private final static Iterable empty = Collections.emptyList();
private final List providers
= new ArrayList();
@Reference(
name = "TableProvider",
unbind = "-",
service = org.daisy.dotify.api.table.TableProvider.class,
cardinality = ReferenceCardinality.MULTIPLE,
policy = ReferencePolicy.STATIC
)
public void addTableProvider(org.daisy.dotify.api.table.TableProvider provider) {
providers.add(provider);
}
public void removeTableProvider(org.daisy.dotify.api.table.TableProvider provider) {
providers.remove(provider);
}
static class TableProxy implements FactoryProperties {
private final org.daisy.dotify.api.table.TableProvider provider;
private final FactoryProperties properties;
private final Locale locale;
private Table table = null;
public TableProxy(FactoryProperties properties, org.daisy.dotify.api.table.TableProvider provider, Locale locale) {
this.properties = properties;
this.provider = provider;
this.locale = locale;
}
public Table getTable() {
if (table == null)
table = provider.newFactory(properties.getIdentifier());
return table;
}
public Locale getLocale() {
return locale;
}
@Override
public String getIdentifier() {
return properties.getIdentifier();
}
@Override
public String getDisplayName() {
return "Default table for " + locale.getDisplayName();
}
@Override
public String getDescription() {
if (getIdentifier().startsWith("org_daisy") ||
getIdentifier().startsWith("org.daisy"))
return null;
else
return properties.getDescription();
}
}
private static final Logger logger = LoggerFactory.getLogger(LocaleBasedTableProvider.class);
}
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