import org.codelibs.fess.crawler.entity.ExtractData;
import org.codelibs.fess.crawler.exception.ExtractException;

/**
 * Extracts text content and metadata from CSV files.
 * This extractor provides better structured data extraction compared to Tika's generic text extraction.
 *
 * <p>Features:
 * <ul>
 *   <li>Automatic delimiter detection (comma, tab, semicolon, pipe)</li>
 *   <li>Header row detection and extraction</li>

## Technical Details

- **Java Version**: 17+
- **Dependencies**:
  - Apache Commons IO 2.19.0 (runtime)
  - JUnit 4.13.2 (test)
- **Module Name**: `org.codelibs.curl4j`
- **Package Structure**: `org.codelibs.curl.*`
- **Build Tool**: Maven 3.x
- **Test Coverage**: JaCoCo plugin enabled

## Code Style

- Uses external Eclipse formatter configuration from CodeLibs

            // Create a buffer and write
            byte[] buffer = new byte[256];
            int bytesWritten = request.writeBytesWireFormat(buffer, 64);

            // Verify structure size (should be 41)
            assertEquals(41, SMBUtil.readInt2(buffer, 64));

            // Verify info type and file info class
            assertEquals((byte) 0x01, buffer[66]);

     * @throws UnknownHostException if the IP address is not found
     */
    @Test
    void testConstructor() throws IOException, PACDecodingException, UnknownHostException {
        // Build a sample Kerberos EncData structure
        ASN1EncodableVector vector = new ASN1EncodableVector();
        vector.add(new DERTaggedObject(2, new DERGeneralString("TEST.REALM")));

        ASN1EncodableVector principalVector = new ASN1EncodableVector();

Currently supported UI languages: German, English, Spanish, French, Italian, Japanese, Korean, Dutch, Polish, Brazilian Portuguese, Russian, Simplified Chinese, and Traditional Chinese.

## File Structure

Language resource files are located in:
```
src/main/resources/
├── fess_label.properties           # Base English labels (fallback)
├── fess_label_[locale].properties  # Language-specific labels (~1,056 lines)

            // Create a buffer and write
            byte[] buffer = new byte[256];
            int bytesWritten = request.writeBytesWireFormat(buffer, 64);

            // Verify structure size (should be 33)
            assertEquals(33, SMBUtil.readInt2(buffer, 64));

            // Verify info type and file info class
            assertEquals((byte) 0x01, buffer[66]);

        assertTrue(bytesWritten > 0);

        // Verify structure size field
        assertEquals(57, buffer[0]);
        assertEquals(0, buffer[1]);
    }

    @Test
    @DisplayName("Test writeBytesWireFormat with long path")
    void testWriteBytesWireFormatLongPath() {
        String longPath = "very\\long\\path\\to\\some\\deeply\\nested\\file\\in\\directory\\structure.txt";

    @Test
    void testReadSecurityBuffer() {
        // Test readSecurityBuffer
        byte[] data = new byte[20];
        byte[] content = "Hello".getBytes();

        // Simulate a security buffer structure: length (2 bytes), length (2 bytes), offset (4 bytes)
        // Length = 5, Offset = 8
        ByteBuffer buffer = ByteBuffer.wrap(data).order(ByteOrder.LITTLE_ENDIAN);

    @Override
    public int size() {
        // Context header: 16 bytes
        // Name: 4 bytes ("RqLs")
        // Padding: 4 bytes (to align data to 8-byte boundary)
        // Data: 32 bytes (lease V1 structure)
        return 16 + 4 + 4 + 32;
    }

    @Override
    public int encode(byte[] dst, int dstIndex) {
        int start = dstIndex;

        // Write context header

        // StructureSize (2 bytes) - must be 44
        this.structureSize = SMBUtil.readInt2(buffer, bufferIndex);
        if (this.structureSize != 44) {
            throw new SMBProtocolDecodingException("Invalid lease break structure size: " + this.structureSize);
        }
        bufferIndex += 2;

        // Reserved (2 bytes)
        bufferIndex += 2;

        // Flags (4 bytes)