Examples with ChmParsingException org.apache.tika.parser.chm.exception.ChmParsingException used on opensource projects

Example 1 with ChmParsingException

use of org.apache.tika.parser.chm.exception.ChmParsingException in project tika by apache.

the class ChmLzxBlock method createLengthTreeLenTable.

private void createLengthTreeLenTable(int offset, int tablelen, short[] pretreetable, short[] prelentable) throws TikaException {
    if (prelentable == null || getChmSection() == null || pretreetable == null || prelentable == null)
        throw new ChmParsingException("is null");
    // represents offset
    int i = offset;
    // local counters
    int z, y, x;
    while (i < tablelen) {
        //Read HUFF sym to z
        z = pretreetable[getChmSection().peekBits(ChmConstants.LZX_PRETREE_TABLEBITS)];
        if (z >= ChmConstants.LZX_PRETREE_NUM_ELEMENTS) {
            // 1 bug, should be
            // 20
            x = ChmConstants.LZX_PRETREE_TABLEBITS;
            do {
                x++;
                z <<= 1;
                z += getChmSection().checkBit(x);
            } while ((z = pretreetable[z]) >= ChmConstants.LZX_PRETREE_NUM_ELEMENTS);
        }
        getChmSection().getSyncBits(prelentable[z]);
        if (z < 17) {
            z = getState().getLengthTreeLengtsTable()[i] - z;
            if (z < 0)
                z = z + 17;
            getState().getLengthTreeLengtsTable()[i] = (short) z;
            i++;
        } else if (z == 17) {
            y = getChmSection().getSyncBits(4);
            y += 4;
            for (int j = 0; j < y; j++) if (i < getState().getLengthTreeLengtsTable().length)
                getState().getLengthTreeLengtsTable()[i++] = 0;
        } else if (z == 18) {
            y = getChmSection().getSyncBits(5);
            y += 20;
            for (int j = 0; j < y; j++) //no tolerate //if (i < getState().getLengthTreeLengtsTable().length)
            getState().getLengthTreeLengtsTable()[i++] = 0;
        } else if (z == 19) {
            y = getChmSection().getSyncBits(1);
            y += 4;
            z = pretreetable[getChmSection().peekBits(ChmConstants.LZX_PRETREE_TABLEBITS)];
            if (z >= ChmConstants.LZX_PRETREE_NUM_ELEMENTS) {
                // 20
                // 6
                x = ChmConstants.LZX_PRETREE_TABLEBITS;
                do {
                    x++;
                    z <<= 1;
                    z += getChmSection().checkBit(x);
                } while (//LZX_MAINTREE_TABLEBITS);
                (z = pretreetable[z]) >= ChmConstants.LZX_PRETREE_NUM_ELEMENTS);
            }
            getChmSection().getSyncBits(prelentable[z]);
            z = getState().getLengthTreeLengtsTable()[i] - z;
            if (z < 0)
                z = z + 17;
            for (int j = 0; j < y; j++) getState().getLengthTreeLengtsTable()[i++] = (short) z;
        }
    }
}

Example 2 with ChmParsingException

use of org.apache.tika.parser.chm.exception.ChmParsingException in project tika by apache.

the class ChmBlockInfo method getChmBlockInfo.

/**
     * Returns an information related to the chmBlockInfo
     * 
     * @param dle
     *            - DirectoryListingEntry
     * @param bytesPerBlock
     *            - int, = chmLzxcResetTable.block_length
     * @param clcd
     *            - ChmLzxcControlData
     * @param chmBlockInfo
     *            - ChmBlockInfo
     * 
     * @return ChmBlockInfo
     * @throws TikaException 
     */
protected ChmBlockInfo getChmBlockInfo(DirectoryListingEntry dle, int bytesPerBlock, ChmLzxcControlData clcd, ChmBlockInfo chmBlockInfo) throws TikaException {
    if (!validateParameters(dle, bytesPerBlock, clcd, chmBlockInfo))
        throw new ChmParsingException("Please check you parameters");
    chmBlockInfo.setStartBlock(dle.getOffset() / bytesPerBlock);
    chmBlockInfo.setEndBlock((dle.getOffset() + dle.getLength()) / bytesPerBlock);
    chmBlockInfo.setStartOffset(dle.getOffset() % bytesPerBlock);
    chmBlockInfo.setEndOffset((dle.getOffset() + dle.getLength()) % bytesPerBlock);
    // potential problem with casting long to int
    chmBlockInfo.setIniBlock(chmBlockInfo.startBlock - chmBlockInfo.startBlock % (int) clcd.getResetInterval());
    //                        % (int) clcd.getResetInterval());
    return chmBlockInfo;
}

Example 3 with ChmParsingException

use of org.apache.tika.parser.chm.exception.ChmParsingException in project tika by apache.

the class ChmLzxBlock method createMainTreeLenTable.

private void createMainTreeLenTable(int offset, int tablelen, short[] pretreetable, short[] prelentable) throws TikaException {
    if (pretreetable == null)
        throw new ChmParsingException("pretreetable is null");
    int i = offset;
    int z, y, x;
    while (i < tablelen) {
        int f = getChmSection().peekBits(ChmConstants.LZX_PRETREE_TABLEBITS);
        z = pretreetable[f];
        if (z >= ChmConstants.LZX_PRETREE_MAXSYMBOLS) {
            x = ChmConstants.LZX_PRETREE_TABLEBITS;
            do {
                x++;
                z <<= 1;
                z += getChmSection().checkBit(x);
            } while ((z = pretreetable[z]) >= ChmConstants.LZX_PRETREE_MAXSYMBOLS);
        }
        getChmSection().getSyncBits(prelentable[z]);
        if (z < 17) {
            z = getState().getMainTreeLengtsTable()[i] - z;
            if (z < 0)
                z = z + 17;
            getState().mainTreeLengtsTable[i] = (short) z;
            i++;
        } else if (z == 17) {
            y = getChmSection().getSyncBits(4);
            y += 4;
            for (int j = 0; j < y; j++) {
                assertInRange(getState().getMainTreeLengtsTable(), i);
                getState().mainTreeLengtsTable[i++] = 0;
            }
        } else if (z == 18) {
            y = getChmSection().getSyncBits(5);
            y += 20;
            for (int j = 0; j < y; j++) {
                assertInRange(getState().getMainTreeLengtsTable(), i);
                getState().mainTreeLengtsTable[i++] = 0;
            }
        } else if (z == 19) {
            y = getChmSection().getSyncBits(1);
            y += 4;
            z = pretreetable[getChmSection().peekBits(ChmConstants.LZX_PRETREE_TABLEBITS)];
            if (z >= ChmConstants.LZX_PRETREE_MAXSYMBOLS) {
                x = ChmConstants.LZX_PRETREE_TABLEBITS;
                do {
                    x++;
                    z <<= 1;
                    z += getChmSection().checkBit(x);
                } while ((z = pretreetable[z]) >= ChmConstants.LZX_PRETREE_MAXSYMBOLS);
            }
            getChmSection().getSyncBits(prelentable[z]);
            z = getState().mainTreeLengtsTable[i] - z;
            if (z < 0)
                z = z + 17;
            for (int j = 0; j < y; j++) if (i < getState().getMainTreeLengtsTable().length)
                getState().mainTreeLengtsTable[i++] = (short) z;
        }
    }
}

Example 4 with ChmParsingException

use of org.apache.tika.parser.chm.exception.ChmParsingException in project tika by apache.

the class ChmLzxcControlData method parse.

// @Override
public void parse(byte[] data, ChmLzxcControlData chmLzxcControlData) throws TikaException {
    if (data == null || (data.length < ChmConstants.CHM_LZXC_MIN_LEN))
        throw new ChmParsingException("we want at least 0x18 bytes");
    chmLzxcControlData.setDataRemained(data.length);
    chmLzxcControlData.setSize(unmarshalUInt32(data, chmLzxcControlData.getSize()));
    chmLzxcControlData.unmarshalCharArray(data, chmLzxcControlData, ChmConstants.CHM_SIGNATURE_LEN);
    chmLzxcControlData.setVersion(unmarshalUInt32(data, chmLzxcControlData.getVersion()));
    chmLzxcControlData.setResetInterval(unmarshalUInt32(data, chmLzxcControlData.getResetInterval()));
    chmLzxcControlData.setWindowSize(unmarshalUInt32(data, chmLzxcControlData.getWindowSize()));
    chmLzxcControlData.setWindowsPerReset(unmarshalUInt32(data, chmLzxcControlData.getWindowsPerReset()));
    if (data.length >= ChmConstants.CHM_LZXC_V2_LEN)
        chmLzxcControlData.setUnknown_18(unmarshalUInt32(data, chmLzxcControlData.getUnknown_18()));
    else
        chmLzxcControlData.setUnknown_18(0);
    if (chmLzxcControlData.getVersion() == 2) {
        chmLzxcControlData.setWindowSize(getWindowSize() * ChmConstants.CHM_WINDOW_SIZE_BLOCK);
    }
    if (chmLzxcControlData.getWindowSize() == 0 || chmLzxcControlData.getResetInterval() == 0)
        throw new ChmParsingException("window size / resetInterval should be more than zero");
    if (chmLzxcControlData.getWindowSize() == 1)
        throw new ChmParsingException("window size / resetInterval should be more than 1");
    /* checks a signature */
    if (!new String(chmLzxcControlData.getSignature(), UTF_8).equals(ChmConstants.LZXC))
        throw new ChmParsingException("the signature does not seem to be correct");
}

Example 5 with ChmParsingException

use of org.apache.tika.parser.chm.exception.ChmParsingException in project tika by apache.

the class ChmLzxcControlData method unmarshalUInt32.

private long unmarshalUInt32(byte[] data, long dest) throws ChmParsingException {
    assert (data != null && data.length > 0);
    if (4 > getDataRemained())
        throw new ChmParsingException("4 > dataLenght");
    dest = data[this.getCurrentPlace()] | data[this.getCurrentPlace() + 1] << 8 | data[this.getCurrentPlace() + 2] << 16 | data[this.getCurrentPlace() + 3] << 24;
    setDataRemained(this.getDataRemained() - 4);
    this.setCurrentPlace(this.getCurrentPlace() + 4);
    return dest;
}