97 lines
3.4 KiB
Java
97 lines
3.4 KiB
Java
package de.marhali.easyi18n.util;
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import com.google.gson.JsonElement;
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import com.google.gson.JsonObject;
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import com.google.gson.JsonPrimitive;
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import de.marhali.easyi18n.model.LocalizedNode;
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import de.marhali.easyi18n.util.array.JsonArrayUtil;
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import org.apache.commons.lang.StringEscapeUtils;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.Map;
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/**
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* Json tree utilities for writing and reading {@link LocalizedNode}'s
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* @author marhali
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*/
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public class JsonUtil {
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/**
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* Creates a {@link JsonObject} based from an {@link LocalizedNode}
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* @param locale Current locale
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* @param parent Parent json. Can be an entire json document
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* @param node The node instance
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*/
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public static void writeTree(String locale, JsonObject parent, LocalizedNode node) {
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if(node.isLeaf() && !node.getKey().equals(LocalizedNode.ROOT_KEY)) {
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if(node.getValue().get(locale) != null) {
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if(JsonArrayUtil.isArray(node.getValue().get(locale))) {
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parent.add(node.getKey(), JsonArrayUtil.write(node.getValue().get(locale)));
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} else {
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String value = StringEscapeUtils.unescapeJava(node.getValue().get(locale));
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parent.add(node.getKey(), new JsonPrimitive(value));
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}
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}
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} else {
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for(LocalizedNode children : node.getChildren()) {
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if(children.isLeaf()) {
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writeTree(locale, parent, children);
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} else {
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JsonObject childrenJson = new JsonObject();
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writeTree(locale, childrenJson, children);
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if(childrenJson.size() > 0) {
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parent.add(children.getKey(), childrenJson);
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}
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}
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}
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}
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}
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/**
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* Reads a {@link JsonObject} and writes the tree into the provided {@link LocalizedNode}
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* @param locale Current locale
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* @param json Json to read
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* @param data Node. Can be a root node
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*/
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public static void readTree(String locale, JsonObject json, LocalizedNode data) {
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for(Map.Entry<String, JsonElement> entry : json.entrySet()) {
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String key = entry.getKey();
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try {
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// Try to go one level deeper
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JsonObject childObject = entry.getValue().getAsJsonObject();
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LocalizedNode childrenNode = data.getChildren(key);
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if(childrenNode == null) {
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childrenNode = new LocalizedNode(key, new ArrayList<>());
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data.addChildren(childrenNode);
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}
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readTree(locale, childObject, childrenNode);
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} catch(IllegalStateException e) { // Reached end for this node
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LocalizedNode leafNode = data.getChildren(key);
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if(leafNode == null) {
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leafNode = new LocalizedNode(key, new HashMap<>());
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data.addChildren(leafNode);
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}
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Map<String, String> messages = leafNode.getValue();
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String value = entry.getValue().isJsonArray()
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? JsonArrayUtil.read(entry.getValue().getAsJsonArray())
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: StringUtil.escapeControls(entry.getValue().getAsString(), true);
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messages.put(locale, value);
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leafNode.setValue(messages);
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}
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}
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}
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} |