+++ /dev/null
-package be.nikiroo.utils.serial;
-
-import java.lang.reflect.Constructor;
-import java.lang.reflect.Field;
-import java.lang.reflect.InvocationTargetException;
-import java.util.HashMap;
-import java.util.Map;
-import java.util.Scanner;
-
-import be.nikiroo.utils.IOUtils;
-import be.nikiroo.utils.StringUtils;
-
-/**
- * A simple class that can accept the output of {@link Exporter} to recreate
- * objects as they were sent to said exporter.
- * <p>
- * This class requires the objects (and their potential enclosing objects) to
- * have an empty constructor, and does not support inner classes (it does
- * support nested classes, though).
- *
- * @author niki
- */
-public class Importer {
- private Boolean link;
- private Object me;
- private Importer child;
- private Map<String, Object> map;
-
- private String currentFieldName;
-
- public Importer() {
- map = new HashMap<String, Object>();
- map.put("NULL", null);
- }
-
- private Importer(Map<String, Object> map) {
- this.map = map;
- }
-
- public Importer readLine(String line) {
- try {
- processLine(line);
- } catch (Exception e) {
- throw new IllegalArgumentException(e);
- }
- return this;
- }
-
- public Importer read(String data) {
- try {
- if (data.startsWith("ZIP:")) {
- data = StringUtils.unzip64(data.substring("ZIP:".length()));
- }
- Scanner scan = new Scanner(data);
- scan.useDelimiter("\n");
- while (scan.hasNext()) {
- processLine(scan.next());
- }
- scan.close();
- } catch (Exception e) {
- throw new IllegalArgumentException(e);
- }
- return this;
- }
-
- public boolean processLine(String line) throws IllegalArgumentException,
- NoSuchFieldException, SecurityException, IllegalAccessException,
- NoSuchMethodException, InstantiationException, ClassNotFoundException, InvocationTargetException {
- // Defer to latest child if any
- if (child != null) {
- if (child.processLine(line)) {
- if (currentFieldName != null) {
- setField(currentFieldName, child.getValue());
- currentFieldName = null;
- }
- child = null;
- }
-
- return false;
- }
-
- if (line.equals("{")) { // START: new child if needed
- if (link != null) {
- child = new Importer(map);
- }
- } else if (line.equals("}")) { // STOP: report self to parent
- return true;
- } else if (line.startsWith("REF ")) { // REF: create/link self
- String ref = line.substring(4).split("@")[1];
- link = map.containsKey(ref);
- if (link) {
- me = map.get(ref);
- } else {
- me = createSelf(line.substring(4).split("@")[0]);
- map.put(ref, me);
- }
- } else { // FIELD: new field
- if (line.endsWith(":")) {
- // field value is compound
- currentFieldName = line.substring(0, line.length() - 1);
- } else {
- // field value is direct
- int pos = line.indexOf(":");
- String fieldName = line.substring(0, pos);
- String encodedValue = line.substring(pos + 1);
- Object value = null;
- value = SerialUtils.decode(encodedValue);
-
- // To support simple types directly:
- if (me == null) {
- me = value;
- } else {
- setField(fieldName, value);
- }
- }
- }
-
- return false;
- }
-
- /**
- * Create an empty object of the given type.
- *
- * @param type
- * the object type
- * @return the object
- *
- * @throws NoSuchMethodException
- * @throws SecurityException
- * @throws InstantiationException
- * @throws IllegalAccessException
- * @throws ClassNotFoundException
- * @throws IllegalArgumentException
- * @throws InvocationTargetException
- */
- private Object createSelf(String type) throws NoSuchMethodException,
- SecurityException, InstantiationException, IllegalAccessException,
- ClassNotFoundException, IllegalArgumentException,
- InvocationTargetException {
-
- try {
- Class<?> clazz = getClass(type);
- if (clazz == null) {
- throw new ClassNotFoundException("Class not found: " + type);
- }
-
- String className = clazz.getName();
- Object[] args = null;
- Constructor<?> ctor = null;
- if (className.contains("$")) {
- Object javaParent = createSelf(className.substring(0,
- className.lastIndexOf('$')));
- args = new Object[] { javaParent };
- ctor = clazz.getDeclaredConstructor(new Class[] { javaParent
- .getClass() });
- } else {
- args = new Object[] {};
- ctor = clazz.getDeclaredConstructor();
- }
-
- ctor.setAccessible(true);
- return ctor.newInstance(args);
- } catch (NoSuchMethodException e) {
- throw new NoSuchMethodException(
- String.format(
- "Objects of type \"%s\" cannot be created by this code: maybe the class"
- + " or its enclosing class doesn't have an empty constructor?",
- type));
-
- }
- }
-
- private Class<?> getClass(String type) throws ClassNotFoundException,
- NoSuchMethodException {
- Class<?> clazz = null;
- try {
- clazz = Class.forName(type);
- } catch (ClassNotFoundException e) {
- int pos = type.length();
- pos = type.lastIndexOf(".", pos);
- if (pos >= 0) {
- String parentType = type.substring(0, pos);
- String nestedType = type.substring(pos + 1);
- Class<?> javaParent = null;
- try {
- javaParent = getClass(parentType);
- parentType = javaParent.getName();
- clazz = Class.forName(parentType + "$" + nestedType);
- } catch (Exception ee) {
- }
-
- if (javaParent == null) {
- throw new NoSuchMethodException(
- "Class not found: "
- + type
- + " (the enclosing class cannot be created: maybe it doesn't have an empty constructor?)");
- }
- }
- }
-
- return clazz;
- }
-
- private void setField(String name, Object value)
- throws NoSuchFieldException, SecurityException,
- IllegalArgumentException, IllegalAccessException {
-
- try {
- Field field = me.getClass().getDeclaredField(name);
-
- field.setAccessible(true);
- field.set(me, value);
- } catch (NoSuchFieldException e) {
- throw new NoSuchFieldException(String.format(
- "Field \"%s\" was not found in object of type \"%s\".",
- name, me.getClass().getCanonicalName()));
- }
- }
-
- public Object getValue() {
- return me;
- }
-}
\ No newline at end of file
git://git.nikiroo.be / fanfix.git / blobdiff