Beispiel #1
0
  /**
   * Parse XML values and store them in a JSONArray.
   *
   * @param x The XMLTokener containing the source string.
   * @param arrayForm true if array form, false if object form.
   * @param ja The JSONArray that is containing the current tag or null if we are at the outermost
   *     level.
   * @param keepStrings Don't type-convert text nodes and attibute values
   * @return A JSONArray if the value is the outermost tag, otherwise null.
   * @throws JSONException
   */
  private static Object parse(XMLTokener x, boolean arrayForm, JSONArray ja, boolean keepStrings)
      throws JSONException {
    String attribute;
    char c;
    String closeTag = null;
    int i;
    JSONArray newja = null;
    JSONObject newjo = null;
    Object token;
    String tagName = null;

    // Test for and skip past these forms:
    //      <!-- ... -->
    //      <![  ... ]]>
    //      <!   ...   >
    //      <?   ...  ?>

    while (true) {
      if (!x.more()) {
        throw x.syntaxError("Bad XML");
      }
      token = x.nextContent();
      if (token == XML.LT) {
        token = x.nextToken();
        if (token instanceof Character) {
          if (token == XML.SLASH) {

            // Close tag </

            token = x.nextToken();
            if (!(token instanceof String)) {
              throw new JSONException("Expected a closing name instead of '" + token + "'.");
            }
            if (x.nextToken() != XML.GT) {
              throw x.syntaxError("Misshaped close tag");
            }
            return token;
          } else if (token == XML.BANG) {

            // <!

            c = x.next();
            if (c == '-') {
              if (x.next() == '-') {
                x.skipPast("-->");
              } else {
                x.back();
              }
            } else if (c == '[') {
              token = x.nextToken();
              if (token.equals("CDATA") && x.next() == '[') {
                if (ja != null) {
                  ja.put(x.nextCDATA());
                }
              } else {
                throw x.syntaxError("Expected 'CDATA['");
              }
            } else {
              i = 1;
              do {
                token = x.nextMeta();
                if (token == null) {
                  throw x.syntaxError("Missing '>' after '<!'.");
                } else if (token == XML.LT) {
                  i += 1;
                } else if (token == XML.GT) {
                  i -= 1;
                }
              } while (i > 0);
            }
          } else if (token == XML.QUEST) {

            // <?

            x.skipPast("?>");
          } else {
            throw x.syntaxError("Misshaped tag");
          }

          // Open tag <

        } else {
          if (!(token instanceof String)) {
            throw x.syntaxError("Bad tagName '" + token + "'.");
          }
          tagName = (String) token;
          newja = new JSONArray();
          newjo = new JSONObject();
          if (arrayForm) {
            newja.put(tagName);
            if (ja != null) {
              ja.put(newja);
            }
          } else {
            newjo.put("tagName", tagName);
            if (ja != null) {
              ja.put(newjo);
            }
          }
          token = null;
          for (; ; ) {
            if (token == null) {
              token = x.nextToken();
            }
            if (token == null) {
              throw x.syntaxError("Misshaped tag");
            }
            if (!(token instanceof String)) {
              break;
            }

            // attribute = value

            attribute = (String) token;
            if (!arrayForm && ("tagName".equals(attribute) || "childNode".equals(attribute))) {
              throw x.syntaxError("Reserved attribute.");
            }
            token = x.nextToken();
            if (token == XML.EQ) {
              token = x.nextToken();
              if (!(token instanceof String)) {
                throw x.syntaxError("Missing value");
              }
              newjo.accumulate(attribute, keepStrings ? token : XML.stringToValue((String) token));
              token = null;
            } else {
              newjo.accumulate(attribute, "");
            }
          }
          if (arrayForm && newjo.length() > 0) {
            newja.put(newjo);
          }

          // Empty tag <.../>

          if (token == XML.SLASH) {
            if (x.nextToken() != XML.GT) {
              throw x.syntaxError("Misshaped tag");
            }
            if (ja == null) {
              if (arrayForm) {
                return newja;
              } else {
                return newjo;
              }
            }

            // Content, between <...> and </...>

          } else {
            if (token != XML.GT) {
              throw x.syntaxError("Misshaped tag");
            }
            closeTag = (String) parse(x, arrayForm, newja, keepStrings);
            if (closeTag != null) {
              if (!closeTag.equals(tagName)) {
                throw x.syntaxError("Mismatched '" + tagName + "' and '" + closeTag + "'");
              }
              tagName = null;
              if (!arrayForm && newja.length() > 0) {
                newjo.put("childNodes", newja);
              }
              if (ja == null) {
                if (arrayForm) {
                  return newja;
                } else {
                  return newjo;
                }
              }
            }
          }
        }
      } else {
        if (ja != null) {
          ja.put(
              token instanceof String
                  ? keepStrings ? token : XML.stringToValue((String) token)
                  : token);
        }
      }
    }
  }
Beispiel #2
0
  /**
   * Scan the content following the named tag, attaching it to the context.
   *
   * @param x The XMLTokener containing the source string.
   * @param context The JSONObject that will include the new material.
   * @param name The tag name.
   * @return true if the close tag is processed.
   * @throws JSONException
   */
  private static boolean parse(XMLTokener x, JSONObject context, String name) throws JSONException {
    char c;
    int i;
    JSONObject jsonobject = null;
    String string;
    String tagName;
    Object token;

    // Test for and skip past these forms:
    //      <!-- ... -->
    //      <!   ...   >
    //      <![  ... ]]>
    //      <?   ...  ?>
    // Report errors for these forms:
    //      <>
    //      <=
    //      <<

    token = x.nextToken();

    // <!

    if (token == BANG) {
      c = x.next();
      if (c == '-') {
        if (x.next() == '-') {
          x.skipPast("-->");
          return false;
        }
        x.back();
      } else if (c == '[') {
        token = x.nextToken();
        if ("CDATA".equals(token)) {
          if (x.next() == '[') {
            string = x.nextCDATA();
            if (string.length() > 0) {
              context.accumulate("content", string);
            }
            return false;
          }
        }
        throw x.syntaxError("Expected 'CDATA['");
      }
      i = 1;
      do {
        token = x.nextMeta();
        if (token == null) {
          throw x.syntaxError("Missing '>' after '<!'.");
        } else if (token == LT) {
          i += 1;
        } else if (token == GT) {
          i -= 1;
        }
      } while (i > 0);
      return false;
    } else if (token == QUEST) {

      // <?

      x.skipPast("?>");
      return false;
    } else if (token == SLASH) {

      // Close tag </

      token = x.nextToken();
      if (name == null) {
        throw x.syntaxError("Mismatched close tag " + token);
      }
      if (!token.equals(name)) {
        throw x.syntaxError("Mismatched " + name + " and " + token);
      }
      if (x.nextToken() != GT) {
        throw x.syntaxError("Misshaped close tag");
      }
      return true;

    } else if (token instanceof Character) {
      throw x.syntaxError("Misshaped tag");

      // Open tag <

    } else {
      tagName = (String) token;
      token = null;
      jsonobject = new JSONObject();
      for (; ; ) {
        if (token == null) {
          token = x.nextToken();
        }

        // attribute = value

        if (token instanceof String) {
          string = (String) token;
          token = x.nextToken();
          if (token == EQ) {
            token = x.nextToken();
            if (!(token instanceof String)) {
              throw x.syntaxError("Missing value");
            }
            jsonobject.accumulate(string, XML.stringToValue((String) token));
            token = null;
          } else {
            jsonobject.accumulate(string, "");
          }

          // Empty tag <.../>

        } else if (token == SLASH) {
          if (x.nextToken() != GT) {
            throw x.syntaxError("Misshaped tag");
          }
          if (jsonobject.length() > 0) {
            context.accumulate(tagName, jsonobject);
          } else {
            context.accumulate(tagName, "");
          }
          return false;

          // Content, between <...> and </...>

        } else if (token == GT) {
          for (; ; ) {
            token = x.nextContent();
            if (token == null) {
              if (tagName != null) {
                throw x.syntaxError("Unclosed tag " + tagName);
              }
              return false;
            } else if (token instanceof String) {
              string = (String) token;
              if (string.length() > 0) {
                jsonobject.accumulate("content", XML.stringToValue(string));
              }

              // Nested element

            } else if (token == LT) {
              if (parse(x, jsonobject, tagName)) {
                if (jsonobject.length() == 0) {
                  context.accumulate(tagName, "");
                } else if (jsonobject.length() == 1 && jsonobject.opt("content") != null) {
                  context.accumulate(tagName, jsonobject.opt("content"));
                } else {
                  context.accumulate(tagName, jsonobject);
                }
                return false;
              }
            }
          }
        } else {
          throw x.syntaxError("Misshaped tag");
        }
      }
    }
  }