Exemplo n.º 1
0
  public static int setNameTreeValue(
      final PdfObject pdfObject,
      int i,
      final byte[] raw,
      final int length,
      final boolean ignoreRecursion,
      final int PDFkeyInt,
      final PdfFileReader objectReader) {

    boolean isRef = false;

    // move to start
    while (raw[i] != '[') { // can be number as well

      if (raw[i] == '(') { // allow for W (7)
        isRef = false;
        break;
      }

      // allow for number as in refer 9 0 R
      if (raw[i] >= '0' && raw[i] <= '9') {
        isRef = true;
        break;
      }

      i++;
    }

    // allow for direct or indirect
    byte[] data = raw;

    int start = i, j = i;

    int count = 0;

    // read ref data and slot in
    if (isRef) {
      // number
      final int[] values = StreamReaderUtils.readRefFromStream(raw, i);

      i = values[2];
      final int generation = values[1];
      final int number = values[0];

      if (raw[i] != 82) // we are expecting R to end ref
      {
        throw new RuntimeException(
            "3. Unexpected value in file "
                + raw[i]
                + " - please send to IDRsolutions for analysis");
      }

      if (!ignoreRecursion) {

        // read the Dictionary data
        data =
            objectReader.readObjectAsByteArray(
                pdfObject, objectReader.isCompressed(number, generation), number, generation);

        // allow for data in Linear object not yet loaded
        if (data == null) {
          pdfObject.setFullyResolved(false);

          if (debugFastCode) {
            System.out.println(padding + "Data not yet loaded");
          }

          i = length;
          return i;
        }

        // lose obj at start
        j = 3;
        while (data[j - 1] != 106
            && data[j - 2] != 98
            && data[j - 3] != 111
            && data[j - 3] != '<') {
          j++;
        }

        j = StreamReaderUtils.skipSpaces(data, j);

        // reset pointer
        start = j;
      }
    }

    // move to end
    while (j < data.length) {

      if (data[j] == '[' || data[j] == '(') {
        count++;
      } else if (data[j] == ']' || data[j] == ')') {
        count--;
      }

      if (count == 0) {
        break;
      }

      j++;
    }

    if (!ignoreRecursion) {
      final int stringLength = j - start + 1;
      byte[] newString = new byte[stringLength];

      System.arraycopy(data, start, newString, 0, stringLength);
      if (pdfObject.getObjectType() != PdfDictionary.Encrypt) {
        final DecryptionFactory decryption = objectReader.getDecryptionObject();
        if (decryption != null) {
          try {
            newString =
                decryption.decrypt(
                    newString, pdfObject.getObjectRefAsString(), false, null, false, false);
          } catch (final PdfSecurityException e) {
            LogWriter.writeLog("Exception: " + e.getMessage());
          }
        }
      }

      pdfObject.setTextStreamValue(PDFkeyInt, newString);

      if (debugFastCode) {
        System.out.println(padding + "name=" + new String(newString) + " set in " + pdfObject);
      }
    }

    // roll on
    if (!isRef) {
      i = j;
    }
    return i;
  }
Exemplo n.º 2
0
  public static int setNameStringValue(
      final PdfObject pdfObject,
      int i,
      final byte[] raw,
      final boolean isMap,
      final Object PDFkey,
      final int PDFkeyInt,
      final PdfFileReader objectReader) {

    byte[] stringBytes;

    // move cursor to end of last command if needed
    while (raw[i] != 10
        && raw[i] != 13
        && raw[i] != 32
        && raw[i] != 47
        && raw[i] != '('
        && raw[i] != '<') {
      i++;
    }

    i = StreamReaderUtils.skipSpaces(raw, i);

    // work out if direct (ie /String or read ref 27 0 R
    int j2 = i;
    byte[] arrayData = raw;

    boolean isIndirect = raw[i] != 47 && raw[i] != 40 && raw[i] != 60; // Some /NAME values start (

    final boolean startsWithBrace = raw[i] == 40;

    // delete
    // @speed - lose this code once Filters done properly
    /*
     * just check its not /Filter [/FlateDecode ] or [] or [ /ASCII85Decode /FlateDecode ]
     * by checking next valid char not /
     */
    boolean isInsideArray = false;
    if (isIndirect) {
      int aa = i + 1;
      aa = StreamReaderUtils.skipSpaces(raw, aa);

      if (raw[aa] == 47 || raw[aa] == ']') {
        isIndirect = false;
        i = aa + 1;
        isInsideArray = true;
      }
    }

    if (isIndirect) { // its in another object so we need to fetch

      final int[] values = StreamReaderUtils.readRefFromStream(raw, i);
      final int ref = values[0];
      final int generation = values[1];
      i = values[2];

      if (raw[i] != 82) { // we are expecting R to end ref
        throw new RuntimeException(
            padding + "2. Unexpected value in file - please send to IDRsolutions for analysis");
      }

      // read the Dictionary data
      arrayData =
          objectReader.readObjectAsByteArray(
              pdfObject, objectReader.isCompressed(ref, generation), ref, generation);

      // allow for data in Linear object not yet loaded
      if (arrayData == null) {
        pdfObject.setFullyResolved(false);

        if (debugFastCode) {
          System.out.println(padding + "Data not yet loaded");
        }

        return raw.length;
      }

      // lose obj at start and roll onto /
      if (arrayData[0] == 47) {
        j2 = 0;
      } else {
        j2 = 3;

        while (arrayData[j2] != 47) {
          j2++;
        }
      }
    }

    // lose /
    j2++;

    // allow for no value with /Intent//Filter
    if (arrayData[j2] == 47) {
      return j2 - 1;
    }

    int end = j2 + 1;

    if (isInsideArray) { // values inside []

      // move cursor to start of text
      j2 = StreamReaderUtils.skipSpacesOrOtherCharacter(arrayData, j2, 47);

      int slashes = 0;

      // count chars
      byte lastChar = 0;
      while (true) {

        if (arrayData[end] == ']') {
          break;
        }

        if (arrayData[end] == 47
            && (lastChar == 32 || lastChar == 10 || lastChar == 13)) // count the / if gap before
        {
          slashes++;
        }

        lastChar = arrayData[end];
        end++;

        if (end == arrayData.length) {
          break;
        }
      }

      // set value and ensure space gap
      final int charCount = end - slashes;
      int ptr = 0;
      stringBytes = new byte[charCount - j2];

      byte nextChar, previous = 0;
      for (int ii = j2; ii < charCount; ii++) {
        nextChar = arrayData[ii];
        if (nextChar == 47) {
          if (previous != 32 && previous != 10 && previous != 13) {
            stringBytes[ptr] = 32;
            ptr++;
          }
        } else {
          stringBytes[ptr] = nextChar;
          ptr++;
        }

        previous = nextChar;
      }
    } else { // its in data stream directly or (string)

      // count chars
      while (true) {

        if (startsWithBrace) {
          if (arrayData[end] == ')' && !ObjectUtils.isEscaped(arrayData, end)) {
            break;
          }
        } else if (arrayData[end] == 32
            || arrayData[end] == 10
            || arrayData[end] == 13
            || arrayData[end] == 47
            || arrayData[end] == 62) {
          break;
        }

        end++;

        if (end == arrayData.length) {
          break;
        }
      }

      // set value
      final int charCount = end - j2;
      stringBytes = new byte[charCount];
      System.arraycopy(arrayData, j2, stringBytes, 0, charCount);
    }

    if (isMap) {
      pdfObject.setName(PDFkey, StringUtils.getTextString(stringBytes, false));
    } else {
      pdfObject.setName(PDFkeyInt, stringBytes);
    }

    if (debugFastCode) {
      System.out.println(
          padding + "String set as =" + new String(stringBytes) + "< written to " + pdfObject);
    }

    // put cursor in correct place (already there if ref)
    if (!isIndirect) {
      i = end - 1;
    }

    return i;
  }