/** Performs the subsequent ReTrace operations. */
  public void execute() throws IOException {
    // Read the mapping file.
    MappingReader mappingReader = new MappingReader(mappingFile);
    mappingReader.pump(this);

    StringBuffer expressionBuffer = new StringBuffer(regularExpression.length() + 32);
    char[] expressionTypes = new char[32];
    int expressionTypeCount = 0;
    int index = 0;
    while (true) {
      int nextIndex = regularExpression.indexOf('%', index);
      if (nextIndex < 0
          || nextIndex == regularExpression.length() - 1
          || expressionTypeCount == expressionTypes.length) {
        break;
      }

      expressionBuffer.append(regularExpression.substring(index, nextIndex));
      expressionBuffer.append('(');

      char expressionType = regularExpression.charAt(nextIndex + 1);
      switch (expressionType) {
        case 'c':
          expressionBuffer.append(REGEX_CLASS);
          break;

        case 'C':
          expressionBuffer.append(REGEX_CLASS_SLASH);
          break;

        case 'l':
          expressionBuffer.append(REGEX_LINE_NUMBER);
          break;

        case 't':
          expressionBuffer.append(REGEX_TYPE);
          break;

        case 'f':
          expressionBuffer.append(REGEX_MEMBER);
          break;

        case 'm':
          expressionBuffer.append(REGEX_MEMBER);
          break;

        case 'a':
          expressionBuffer.append(REGEX_ARGUMENTS);
          break;
      }

      expressionBuffer.append(')');

      expressionTypes[expressionTypeCount++] = expressionType;

      index = nextIndex + 2;
    }

    expressionBuffer.append(regularExpression.substring(index));

    Pattern pattern = Pattern.compile(expressionBuffer.toString());

    // Read the stack trace file.
    LineNumberReader reader =
        new LineNumberReader(
            stackTraceFile == null
                ? (Reader) new InputStreamReader(System.in)
                : (Reader) new BufferedReader(new FileReader(stackTraceFile)));

    try {
      StringBuffer outLine = new StringBuffer(256);
      List extraOutLines = new ArrayList();

      String className = null;

      // Read the line in the stack trace.
      while (true) {
        String line = reader.readLine();
        if (line == null) {
          break;
        }

        Matcher matcher = pattern.matcher(line);

        if (matcher.matches()) {
          int lineNumber = 0;
          String type = null;
          String arguments = null;

          // Figure out a class name, line number, type, and
          // arguments beforehand.
          for (int expressionTypeIndex = 0;
              expressionTypeIndex < expressionTypeCount;
              expressionTypeIndex++) {
            int startIndex = matcher.start(expressionTypeIndex + 1);
            if (startIndex >= 0) {
              String match = matcher.group(expressionTypeIndex + 1);

              char expressionType = expressionTypes[expressionTypeIndex];
              switch (expressionType) {
                case 'c':
                  className = originalClassName(match);
                  break;

                case 'C':
                  className = originalClassName(ClassUtil.externalClassName(match));
                  break;

                case 'l':
                  lineNumber = Integer.parseInt(match);
                  break;

                case 't':
                  type = originalType(match);
                  break;

                case 'a':
                  arguments = originalArguments(match);
                  break;
              }
            }
          }

          // Actually construct the output line.
          int lineIndex = 0;

          outLine.setLength(0);
          extraOutLines.clear();

          for (int expressionTypeIndex = 0;
              expressionTypeIndex < expressionTypeCount;
              expressionTypeIndex++) {
            int startIndex = matcher.start(expressionTypeIndex + 1);
            if (startIndex >= 0) {
              int endIndex = matcher.end(expressionTypeIndex + 1);
              String match = matcher.group(expressionTypeIndex + 1);

              // Copy a literal piece of input line.
              outLine.append(line.substring(lineIndex, startIndex));

              char expressionType = expressionTypes[expressionTypeIndex];
              switch (expressionType) {
                case 'c':
                  className = originalClassName(match);
                  outLine.append(className);
                  break;

                case 'C':
                  className = originalClassName(ClassUtil.externalClassName(match));
                  outLine.append(ClassUtil.internalClassName(className));
                  break;

                case 'l':
                  lineNumber = Integer.parseInt(match);
                  outLine.append(match);
                  break;

                case 't':
                  type = originalType(match);
                  outLine.append(type);
                  break;

                case 'f':
                  originalFieldName(className, match, type, outLine, extraOutLines);
                  break;

                case 'm':
                  originalMethodName(
                      className, match, lineNumber, type, arguments, outLine, extraOutLines);
                  break;

                case 'a':
                  arguments = originalArguments(match);
                  outLine.append(arguments);
                  break;
              }

              // Skip the original element whose processed version
              // has just been appended.
              lineIndex = endIndex;
            }
          }

          // Copy the last literal piece of input line.
          outLine.append(line.substring(lineIndex));

          // Print out the main line.
          System.out.println(outLine);

          // Print out any additional lines.
          for (int extraLineIndex = 0; extraLineIndex < extraOutLines.size(); extraLineIndex++) {
            System.out.println(extraOutLines.get(extraLineIndex));
          }
        } else {
          // Print out the original line.
          System.out.println(line);
        }
      }
    } catch (IOException ex) {
      throw new IOException("Can't read stack trace (" + ex.getMessage() + ")");
    } finally {
      if (stackTraceFile != null) {
        try {
          reader.close();
        } catch (IOException ex) {
          // This shouldn't happen.
        }
      }
    }
  }
Beispiel #2
0
  /** Receive notification of the end of an element. */
  @Override
  public void endElement(String uri, String l, String q) {
    /*
     * 1. If current element is a String, update its value from the string buffer.
     * 2. Add the element to parent.
     */
    ElementInfo element = _stack.remove(_stack.size() - 1);
    _logger.fine("endElement " + element);
    if (element.type == null) {
      _logger.warning("Element " + element.name + " not created ");
      return;
    } else if (_chars.length() > 0) {
      try {
        injectProperty(element.data, String.class, _chars.toString(), null, null);
      } catch (Exception x) {
        if (!_lenient) {
          throw new BeanAssemblyException(
              "Failed to set characters to object " + element.type.getName(), x);
        } else {
          _logger.warning("Failed to set characters to parent " + element.data);
        }
      }
    }
    _chars.setLength(0);
    _logger.fine(
        "<<ElementInfo: "
            + element.type.getName()
            + " in "
            + element
            + "\n    @as is "
            + element.inst.get("@as")
            + "\n    @id is "
            + element.inst.get("@id"));

    if (List.class.isAssignableFrom(element.data.getClass()) && element.name.endsWith("...")) {
      List<?> list = (List<?>) element.data;
      Object array = Array.newInstance(element.type, list.size());
      for (int i = 0; i < list.size(); ++i) {
        Array.set(array, i, list.get(i));
      }
      element.data = array;
    }

    String id = element.inst.get("@id");
    if (id != null) {
      // locally stored object - not added to the parent
      _local.put(id, element);
    } else if (!_stack.isEmpty()) {
      // inject into the parent as a property
      ElementInfo parent = _stack.get(_stack.size() - 1);
      _logger.fine("Parent is " + parent.data.getClass().getName());
      try {
        String as = element.inst.get("@as");
        if (as != null) {
          injectProperty(
              parent.data,
              element.type,
              element.data,
              Strings.toCamelCase(as, '-', false),
              element.args.complete());
        } else {
          injectProperty(parent.data, element.type, element.data, null, element.args.complete());
        }
      } catch (Exception x) {
        if (!_lenient) {
          throw new BeanAssemblyException(
              "Failed to set value " + element.data + " to parent " + parent.data, x);
        } else {
          _logger.log(
              Level.WARNING,
              "Failed to set value " + element.data + " to parent " + parent.data,
              x);
        }
      }
    }
    _top = element.data;
  }