content: /*
   * Copyright 1999-2018 Alibaba Group.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package com.alibaba.fastjson.serializer;
  
  import java.io.File;
  import java.io.IOException;
  import java.io.StringWriter;
  import java.lang.reflect.InvocationTargetException;
  import java.lang.reflect.Method;
  import java.lang.reflect.ParameterizedType;
  import java.lang.reflect.Type;
  import java.net.Inet4Address;
  import java.net.Inet6Address;
  import java.net.InetAddress;
  import java.net.InetSocketAddress;
  import java.net.MalformedURLException;
  import java.net.URI;
  import java.net.URL;
  import java.net.UnknownHostException;
  import java.nio.charset.Charset;
  import java.text.SimpleDateFormat;
  import java.util.*;
  import java.util.regex.Pattern;
  
  import com.alibaba.fastjson.*;
  import com.alibaba.fastjson.parser.DefaultJSONParser;
  import com.alibaba.fastjson.parser.JSONLexer;
  import com.alibaba.fastjson.parser.JSONToken;
  import com.alibaba.fastjson.parser.deserializer.ObjectDeserializer;
  import com.alibaba.fastjson.util.IOUtils;
  import com.alibaba.fastjson.util.TypeUtils;
  import org.w3c.dom.Node;
  
  import javax.xml.transform.Transformer;
  import javax.xml.transform.TransformerException;
  import javax.xml.transform.TransformerFactory;
  import javax.xml.transform.dom.DOMSource;
  import javax.xml.transform.stream.StreamResult;
  
  /**
   * @author wenshao[szujobs@hotmail.com]
   */
  public class MiscCodec implements ObjectSerializer, ObjectDeserializer {
      private static      boolean   FILE_RELATIVE_PATH_SUPPORT = false;
      public final static MiscCodec instance                   = new MiscCodec();
      private static      Method    method_paths_get;
      private static      boolean   method_paths_get_error     = false;
  
      static {
          FILE_RELATIVE_PATH_SUPPORT = "true".equals(IOUtils.getStringProperty("fastjson.deserializer.fileRelativePathSupport"));
      }
  
      public void write(JSONSerializer serializer, Object object, Object fieldName, Type fieldType,
                        int features) throws IOException {
          SerializeWriter out = serializer.out;
  
          if (object == null) {
              out.writeNull();
              return;
          }
  
          Class<?> objClass = object.getClass();
  
          String strVal;
          if (objClass == SimpleDateFormat.class) {
              String pattern = ((SimpleDateFormat) object).toPattern();
  
              if (out.isEnabled(SerializerFeature.WriteClassName)) {
                  if (object.getClass() != fieldType) {
                      out.write('{');
                      out.writeFieldName(JSON.DEFAULT_TYPE_KEY);
                      serializer.write(object.getClass().getName());
                      out.writeFieldValue(',', "val", pattern);
                      out.write('}');
                      return;
                  }
              }
  
              strVal = pattern;
          } else if (objClass == Class.class) {
              Class<?> clazz = (Class<?>) object;
              strVal = clazz.getName();
          } else if (objClass == InetSocketAddress.class) {
              InetSocketAddress address = (InetSocketAddress) object;
  
              InetAddress inetAddress = address.getAddress();
  
              out.write('{');
              if (inetAddress != null) {
                  out.writeFieldName("address");
                  serializer.write(inetAddress);
                  out.write(',');
              }
              out.writeFieldName("port");
              out.writeInt(address.getPort());
              out.write('}');
              return;
          } else if (object instanceof File) {
              strVal = ((File) object).getPath();
          } else if (object instanceof InetAddress) {
              strVal = ((InetAddress) object).getHostAddress();
          } else if (object instanceof TimeZone) {
              TimeZone timeZone = (TimeZone) object;
              strVal = timeZone.getID();
          } else if (object instanceof Currency) {
              Currency currency = (Currency) object;
              strVal = currency.getCurrencyCode();
          } else if (object instanceof JSONStreamAware) {
              JSONStreamAware aware = (JSONStreamAware) object;
              aware.writeJSONString(out);
              return;
          } else if (object instanceof Iterator) {
              Iterator<?> it = ((Iterator<?>) object);
              writeIterator(serializer, out, it);
              return;
          } else if (object instanceof Iterable) {
              Iterator<?> it = ((Iterable<?>) object).iterator();
              writeIterator(serializer, out, it);
              return;
          } else if (object instanceof Map.Entry) {
              Map.Entry entry = (Map.Entry) object;
              Object objKey = entry.getKey();
              Object objVal = entry.getValue();
  
              if (objKey instanceof String) {
                  String key = (String) objKey;
  
                  if (objVal instanceof String) {
                      String value = (String) objVal;
                      out.writeFieldValueStringWithDoubleQuoteCheck('{', key, value);
                  } else {
                      out.write('{');
                      out.writeFieldName(key);
                      serializer.write(objVal);
                  }
              } else {
                  out.write('{');
                  serializer.write(objKey);
                  out.write(':');
                  serializer.write(objVal);
              }
              out.write('}');
              return;
          } else if (object.getClass().getName().equals("net.sf.json.JSONNull")) {
              out.writeNull();
              return;
          } else if (object instanceof org.w3c.dom.Node) {
              strVal = toString((Node) object);
          } else {
              throw new JSONException("not support class : " + objClass);
          }
  
          out.writeString(strVal);
      }
  
      private static String toString(org.w3c.dom.Node node) {
          try {
              TransformerFactory transFactory = TransformerFactory.newInstance();
              Transformer transformer = transFactory.newTransformer();
              DOMSource domSource = new DOMSource(node);
  
              StringWriter out = new StringWriter();
              transformer.transform(domSource, new StreamResult(out));
              return out.toString();
          } catch (TransformerException e) {
              throw new JSONException("xml node to string error", e);
          }
      }
  
      protected void writeIterator(JSONSerializer serializer, SerializeWriter out, Iterator<?> it) {
          int i = 0;
          out.write('[');
          while (it.hasNext()) {
              if (i != 0) {
                  out.write(',');
              }
              Object item = it.next();
              serializer.write(item);
              ++i;
          }
          out.write(']');
          return;
      }
  
      @SuppressWarnings("unchecked")
      public <T> T deserialze(DefaultJSONParser parser, Type clazz, Object fieldName) {
          JSONLexer lexer = parser.lexer;
  
          if (clazz == InetSocketAddress.class) {
              if (lexer.token() == JSONToken.NULL) {
                  lexer.nextToken();
                  return null;
              }
  
              parser.accept(JSONToken.LBRACE);
  
              InetAddress address = null;
              int port = 0;
              for (;;) {
                  String key = lexer.stringVal();
                  lexer.nextToken(JSONToken.COLON);
  
                  if (key.equals("address")) {
                      parser.accept(JSONToken.COLON);
                      address = parser.parseObject(InetAddress.class);
                  } else if (key.equals("port")) {
                      parser.accept(JSONToken.COLON);
                      if (lexer.token() != JSONToken.LITERAL_INT) {
                          throw new JSONException("port is not int");
                      }
                      port = lexer.intValue();
                      lexer.nextToken();
                  } else {
                      parser.accept(JSONToken.COLON);
                      parser.parse();
                  }
  
                  if (lexer.token() == JSONToken.COMMA) {
                      lexer.nextToken();
                      continue;
                  }
  
                  break;
              }
  
              parser.accept(JSONToken.RBRACE);
  
              return (T) new InetSocketAddress(address, port);
          }
  
          Object objVal;
  
          if (parser.resolveStatus == DefaultJSONParser.TypeNameRedirect) {
              parser.resolveStatus = DefaultJSONParser.NONE;
              parser.accept(JSONToken.COMMA);
  
              if (lexer.token() == JSONToken.LITERAL_STRING) {
                  if (!"val".equals(lexer.stringVal())) {
                      throw new JSONException("syntax error");
                  }
                  lexer.nextToken();
              } else {
                  throw new JSONException("syntax error");
              }
  
              parser.accept(JSONToken.COLON);
  
              objVal = parser.parse();
  
              parser.accept(JSONToken.RBRACE);
          } else {
              objVal = parser.parse();
          }
  
          String strVal;
  
          if (objVal == null) {
              strVal = null;
          } else if (objVal instanceof String) {
              strVal = (String) objVal;
          } else {
              if (objVal instanceof JSONObject) {
                  JSONObject jsonObject = (JSONObject) objVal;
  
                  if (clazz == Currency.class) {
                      String currency = jsonObject.getString("currency");
                      if (currency != null) {
                          return (T) Currency.getInstance(currency);
                      }
  
                      String symbol = jsonObject.getString("currencyCode");
                      if (symbol != null) {
                          return (T) Currency.getInstance(symbol);
                      }
                  }
  
                  if (clazz == Map.Entry.class) {
                     return (T) jsonObject.entrySet().iterator().next();
                  }
  
                  return jsonObject.toJavaObject(clazz);
              }
              throw new JSONException("expect string");
          }
  
          if (strVal == null || strVal.length() == 0) {
              return null;
          }
  
          if (clazz == UUID.class) {
              return (T) UUID.fromString(strVal);
          }
  
          if (clazz == URI.class) {
              return (T) URI.create(strVal);
          }
  
          if (clazz == URL.class) {
              try {
                  return (T) new URL(strVal);
              } catch (MalformedURLException e) {
                  throw new JSONException("create url error", e);
              }
          }
  
          if (clazz == Pattern.class) {
              return (T) Pattern.compile(strVal);
          }
  
          if (clazz == Locale.class) {
              return (T) TypeUtils.toLocale(strVal);
          }
  
          if (clazz == SimpleDateFormat.class) {
              SimpleDateFormat dateFormat = new SimpleDateFormat(strVal, lexer.getLocale());
              dateFormat.setTimeZone(lexer.getTimeZone());
              return (T) dateFormat;
          }
  
          if (clazz == InetAddress.class || clazz == Inet4Address.class || clazz == Inet6Address.class) {
              try {
                  return (T) InetAddress.getByName(strVal);
              } catch (UnknownHostException e) {
                  throw new JSONException("deserialize inet adress error", e);
              }
          }
  
          if (clazz == File.class) {
              if (strVal.indexOf("..") >= 0 && !FILE_RELATIVE_PATH_SUPPORT) {
                  throw new JSONException("file relative path not support.");
              }
  
              return (T) new File(strVal);
          }
  
          if (clazz == TimeZone.class) {
              return (T) TimeZone.getTimeZone(strVal);
          }
  
          if (clazz instanceof ParameterizedType) {
              ParameterizedType parmeterizedType = (ParameterizedType) clazz;
              clazz = parmeterizedType.getRawType();
          }
  
          if (clazz == Class.class) {
              return (T) TypeUtils.loadClass(strVal, parser.getConfig().getDefaultClassLoader(), false);
          }
  
          if (clazz == Charset.class) {
              return (T) Charset.forName(strVal);
          }
  
          if (clazz == Currency.class) {
              return (T) Currency.getInstance(strVal);
          }
  
          if (clazz == JSONPath.class) {
              return (T) new JSONPath(strVal);
          }
  
  
  
          if (clazz instanceof Class) {
              String className = ((Class) clazz).getName();
  
              if (className.equals("java.nio.file.Path")) {
                  try {
                      if (method_paths_get == null && !method_paths_get_error) {
                          Class<?> paths = TypeUtils.loadClass("java.nio.file.Paths");
                          method_paths_get = paths.getMethod("get", String.class, String[].class);
                      }
                      if (method_paths_get != null) {
                          return (T) method_paths_get.invoke(null, strVal, new String[0]);
                      }
  
                      throw new JSONException("Path deserialize erorr");
                  } catch (NoSuchMethodException ex) {
                      method_paths_get_error = true;
                  } catch (IllegalAccessException ex) {
                      throw new JSONException("Path deserialize erorr", ex);
                  } catch (InvocationTargetException ex) {
                      throw new JSONException("Path deserialize erorr", ex);
                  }
              }
  
              throw new JSONException("MiscCodec not support " + className);
          }
  
          throw new JSONException("MiscCodec not support " + clazz.toString());
      }
  
      public int getFastMatchToken() {
          return JSONToken.LITERAL_STRING;
      }
  }
  