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Signed-off-by: Aman Prashant <aman.prashant@broadcom.com>
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203
...ne/src/main/java/org/eclipse/lsp/cobol/core/messages/CobolLSPropertiesResourceBundle.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,203 @@ | ||
| /* | ||
| * Copyright (c) 2022 Broadcom. | ||
| * The term "Broadcom" refers to Broadcom Inc. and/or its subsidiaries. | ||
| * | ||
| * This program and the accompanying materials are made | ||
| * available under the terms of the Eclipse Public License 2.0 | ||
| * which is available at https://www.eclipse.org/legal/epl-2.0/ | ||
| * | ||
| * SPDX-License-Identifier: EPL-2.0 | ||
| * | ||
| * Contributors: | ||
| * Broadcom, Inc. - initial API and implementation | ||
| * | ||
| */ | ||
| package org.eclipse.lsp.cobol.core.messages; | ||
|
|
||
| import com.google.common.annotations.VisibleForTesting; | ||
| import lombok.NonNull; | ||
| import lombok.extern.slf4j.Slf4j; | ||
| import org.apache.commons.io.IOUtils; | ||
| import org.eclipse.lsp.cobol.core.engine.dialects.WorkingFolderService; | ||
|
|
||
| import java.io.IOException; | ||
| import java.io.InputStream; | ||
| import java.net.URI; | ||
| import java.net.URL; | ||
| import java.nio.charset.StandardCharsets; | ||
| import java.util.*; | ||
| import java.util.stream.Collectors; | ||
|
|
||
| /** | ||
| * This is a multiple properties resource bundle. Resource bundles contain locale-specific objects. | ||
| * When your program needs a locale-specific resource, a String for example, your program can load | ||
| * it from the resource bundle that is appropriate for the current user's locale. | ||
| */ | ||
| @Slf4j | ||
| public class CobolLSPropertiesResourceBundle extends ResourceBundle { | ||
| private final String baseName; | ||
| public static final char BUNDLE_SEPARATOR = '_'; | ||
| private final Properties properties; | ||
| private final WorkingFolderService workingFolderService; | ||
| private final Locale locale; | ||
|
|
||
| public CobolLSPropertiesResourceBundle( | ||
| String basename, Locale locale, WorkingFolderService workingFolderService) { | ||
| this.workingFolderService = workingFolderService; | ||
| this.baseName = basename; | ||
| this.properties = new Properties(); | ||
| this.locale = locale; | ||
| setParent(ResourceBundle.getBundle(basename, locale)); | ||
| } | ||
|
|
||
| /** | ||
| * Updates resource bundle for a supplied dialect. | ||
| * | ||
| * @param dialectName dialect for which resource needs to be updated | ||
| * @throws IOException when resources for a dialect is not found | ||
| */ | ||
| public void updateMessageResourceBundle(String dialectName) throws IOException { | ||
| properties.putAll(load(dialectName, locale)); | ||
| } | ||
|
|
||
| private Properties load(String dialectName, Locale locale) throws IOException { | ||
| Properties properties = new Properties(); | ||
| List<String> resourceName = toSuspectedBundleNames(locale); | ||
| Collections.reverse(resourceName); | ||
| URI workingFolder = this.workingFolderService.getWorkingFolder(); | ||
| InputStream validResources = | ||
| getDialectResources(resourceName, workingFolder, getJarName(dialectName)); | ||
| properties.load(validResources); | ||
| return properties; | ||
| } | ||
|
|
||
| private String getJarName(String dialectName) { | ||
| return "dialect-" + dialectName + ".jar"; | ||
| } | ||
|
|
||
| @VisibleForTesting | ||
| public InputStream getDialectResources( | ||
| List<String> resourceName, URI workingFolder, String jarName) throws IOException { | ||
| for (String s : resourceName) { | ||
| URL url = new URL("jar:" + workingFolder + "/" + jarName + "!/" + s); | ||
| if (jarUrlExists(url)) { | ||
| return url.openStream(); | ||
| } else { | ||
| LOG.debug("Resource Bundle " + s + " not available at " + jarName); | ||
| } | ||
| } | ||
| return IOUtils.toInputStream("", StandardCharsets.UTF_8); | ||
| } | ||
|
|
||
| private boolean jarUrlExists(URL url) { | ||
| try { | ||
| IOUtils.toString(url.openStream(), StandardCharsets.UTF_8); | ||
| return true; | ||
| } catch (IOException e) { | ||
| return false; | ||
| } | ||
| } | ||
|
|
||
| private List<String> toSuspectedBundleNames(String baseName, Locale locale) { | ||
| String language = locale.getLanguage(); | ||
| String script = locale.getScript(); | ||
| String country = locale.getCountry(); | ||
| String variant = locale.getVariant(); | ||
|
|
||
| if (Objects.equals(language, "") | ||
| && Objects.equals(country, "") | ||
| && Objects.equals(variant, "")) { | ||
| return Collections.singletonList(baseName); | ||
| } | ||
|
|
||
| StringBuilder sb = new StringBuilder(baseName); | ||
| sb.append(BUNDLE_SEPARATOR); | ||
| if (!Objects.equals(script, "")) { | ||
| if (!Objects.equals(variant, "")) { | ||
| sb.append(language) | ||
| .append(BUNDLE_SEPARATOR) | ||
| .append(script) | ||
| .append(BUNDLE_SEPARATOR) | ||
| .append(country) | ||
| .append(BUNDLE_SEPARATOR) | ||
| .append(variant); | ||
| } else if (!Objects.equals(country, "")) { | ||
| sb.append(language) | ||
| .append(BUNDLE_SEPARATOR) | ||
| .append(script) | ||
| .append(BUNDLE_SEPARATOR) | ||
| .append(country); | ||
| } else { | ||
| sb.append(language).append(BUNDLE_SEPARATOR).append(script); | ||
| } | ||
| } else { | ||
| if (!Objects.equals(variant, "")) { | ||
| sb.append(language) | ||
| .append(BUNDLE_SEPARATOR) | ||
| .append(country) | ||
| .append(BUNDLE_SEPARATOR) | ||
| .append(variant); | ||
| } else if (!Objects.equals(country, "")) { | ||
| sb.append(language).append(BUNDLE_SEPARATOR).append(country); | ||
| } else { | ||
| sb.append(language); | ||
| } | ||
| } | ||
| return possibleResources(sb); | ||
| } | ||
|
|
||
| private List<String> toSuspectedBundleNames(Locale locale) { | ||
| return toSuspectedBundleNames(this.baseName, locale); | ||
| } | ||
|
|
||
| private List<String> possibleResources(StringBuilder sb) { | ||
| List<String> result = new ArrayList<>(); | ||
| String[] s = sb.toString().split("_"); | ||
| final String[] prevStr = {""}; | ||
| Arrays.stream(s) | ||
| .forEach( | ||
| str -> { | ||
| if (Objects.equals(prevStr[0], "")) { | ||
| prevStr[0] = str; | ||
| } else { | ||
| prevStr[0] = String.join("_", prevStr[0], str); | ||
| } | ||
| result.add(prevStr[0] + ".properties"); | ||
| }); | ||
| return result; | ||
| } | ||
|
|
||
| /** | ||
| * Gets an object for the given key from this resource bundle. Returns null if this resource | ||
| * bundle does not contain an object for the given key. | ||
| * | ||
| * @param key the key for the desired object | ||
| * @return the object for the given key, or Key | ||
| */ | ||
| @Override | ||
| protected Object handleGetObject(@NonNull String key) { | ||
| try { | ||
| return parent.getObject(key); | ||
| } catch (MissingResourceException e) { | ||
| if (properties != null && properties.get(key) != null) { | ||
| return properties.get(key); | ||
| } else { | ||
| return key; | ||
| } | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Returns an enumeration of the keys. | ||
| * | ||
| * @return an <code>Enumeration</code> of the keys contained in this <code>ResourceBundle</code> | ||
| * and its parent bundles. | ||
| */ | ||
| @Override | ||
| public Enumeration<String> getKeys() { | ||
| Set<String> parentKeys = parent.keySet(); | ||
| Set<String> propKeys = properties.keySet().stream().map(o -> (String) o).collect(Collectors.toSet()); | ||
| parentKeys.addAll(propKeys); | ||
| return Collections.enumeration(parentKeys); | ||
| } | ||
| } |
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