TdsStream.java
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|---|---|---|
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net.sourceforge.jtds.jdbc |
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jTDS |
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| Metric | Description | |
|---|---|---|
| DECL_COMMENTS | Comments in declarations |  |
| RETURNS | Number of return points from functions | |
| INTERFACE_COMPLEXITY | Interface complexity | |
| LOOPS | Number of loops | |
| JAVA0076 | JAVA0076 Use of magic number | |
| DOC_COMMENT | Number of javadoc comment lines | |
| LINE_COMMENT | Number of line comments | |
| SIZE | Size of the file in bytes | |
| COMMENTS | Comment lines | |
| CYCLOMATIC | Cyclomatic complexity | |
| LOGICAL_LINES | Number of statements | |
| OPERATORS | Number of operators | |
| JAVA0067 | JAVA0067 Array descriptor on identifier name | |
| PROGRAM_LENGTH | Halstead program length | |
| LINES | Number of lines in the source file | |
| COMPARISONS | Number of comparison operators | |
| BLOCKS | Number of blocks | |
| ELOC | Effective lines of code | |
| OPERANDS | Number of operands | |
| LOC | Lines of code | |
| FUNCTIONS | Number of function declarations | |
| PARAMS | Number of formal parameter declarations | |
| PROGRAM_VOCAB | Halstead program vocabulary | |
| UNIQUE_OPERANDS | Number of unique operands | |
| JAVA0082 | JAVA0082 Unnecessary widening cast | |
| EXEC_COMMENTS | Comments in executable code | |
| JAVA0034 | JAVA0034 Missing braces in if statement | |
| JAVA0177 | JAVA0177 Variable declaration missing initializer | |
| UNIQUE_OPERATORS | Number of unique operators | |
| JAVA0128 | JAVA0128 Public constructor in non-public class | |
| JAVA0115 | JAVA0115 Incorrect javadoc: no @throws or @exception tag for 'exception' | |
| EXITS | Procedure exits | |
| JAVA0117 | JAVA0117 Missing javadoc: method 'method' | |
| PROGRAM_VOLUME | Halstead program volume | |
| JAVA0136 | JAVA0136 N methods defined in class (maximum: M) | |
| JAVA0126 | JAVA0126 Method declares unchecked exception in throws | |
| JAVA0110 | JAVA0110 Incorrect javadoc: no @return tag | |
| JAVA0123 | JAVA0123 Use all three components of for loop | |
| JAVA0100 | JAVA0100 Class contains N non-final fields (maximum: M) | |
| JAVA0108 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| JAVA0270 | JAVA0270 Use Java 5.0 enhanced for loop construct to iterate over all elements in an array | |
| NEST_DEPTH | Maximum nesting depth | |
| JAVA0145 | JAVA0145 Tab character used in source file | |
// jTDS JDBC Driver for Microsoft SQL Server and Sybase
// Copyright (C) 2004 The jTDS Project
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
package net.sourceforge.jtds.jdbc;
import java.io.IOException;
import java.io.InputStream;
import java.nio.charset.Charset;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.nio.ByteBuffer;
import java.nio.CharBuffer;
/**
* This class contains methods to read or write data to and from the TDS data stream.
* @author Mike Hutchinson.
*
*/
public final class TdsStream {
/** The shared network socket. */
private final TdsSocket socket;
/** The output packet buffer. */
private byte[] outBuffer;
/** The offset of the next byte to write. */
private int outBufferPtr;
/** The request packet type. */
private byte pktType;
/** True if stream is closed. */
private boolean isClosed;
/** The current output buffer size*/
private int bufferSize;
/** The Input packet buffer. */
private byte[] inBuffer;
/** The offset of the next byte to read. */
private int inBufferPtr;
/** The length of current input packet. */
private int inBufferLen;
/** A shared byte buffer. */
private final byte[] byteBuffer = new byte[8000];
/** A shared char buffer. */
private final char[] charBuffer = new char[4000];
/** The parent TdsCore object. */
private final TdsCore tds;
/** Cached TdsInputStream instance. */
private final TdsInputStream tdsInputStream = new TdsInputStream(this);
/** Cached Tds90InputStream instance. */
private final Tds90InputStream tds90InputStream = new Tds90InputStream(this);
/** The byte to char map. */
private char byteToChar[];
/** The char to byte map. */
private byte charToByte[];
/** default Charset Name. */
private String charsetName;
/** High speed character translation mapping table. */
private static java.util.HashMap<String, Object[]> charsetMap = new java.util.HashMap<String, Object[]>();
/** Maximum index for byte maps. */
private static int MAX_BYTE_INDEX = 256;
/** Maximum index for char maps. */
private static int MAX_CHAR_INDEX = 65536;
/** Standard replacement character for unsupported mappings. */
private static byte REPLACEMENT_CHAR = (byte)0x3F;
/**
* Construct a RequestStream object.
*
* @param tds the TdcCore instance for this stream
* @param socket the IO socket.
*/
TdsStream(TdsCore tds, TdsSocket socket) {
this.tds = tds;
this.socket = socket;
this.bufferSize = TdsCore.MIN_PKT_SIZE;
this.outBuffer = new byte[bufferSize];
this.outBufferPtr = TdsCore.PKT_HDR_LEN;
this.inBuffer = new byte[bufferSize];
this.inBufferLen = bufferSize;
this.inBufferPtr = bufferSize;
}
/**
* Set the default character set for this connection stream.
* <p/>For single byte charset a simple lookup table is used to do
* the conversions. This is roughly 3 times faster than the Charset
* encoder/decoder. The mapping tables are shared between connections.
* @param cs the charset instance.
*/
void setCharset(Charset cs)
{
charsetName = null;
if (cs.newEncoder().maxBytesPerChar() > 1.0) {
// Only worth doing for single byte character sets
return;
}
String csName = cs.name();
synchronized (charsetMap) {
Object maps[] = charsetMap.get(csName);
if (maps == null) {
byte page[] = new byte[MAX_BYTE_INDEX];
for (int i = 0; i < MAX_BYTE_INDEX; i++) {
page[i] = (byte)i;
}
char charMap[];
try {
charMap = new String(page, cs.name()).toCharArray();
if (charMap.length != MAX_BYTE_INDEX) {
return; // Should 256 if really max 1 byte per char!
}
} catch (java.io.UnsupportedEncodingException e) {
return; // Should not occur
}
byte byteMap[] = new byte[MAX_CHAR_INDEX];
for (int i = 0; i < MAX_CHAR_INDEX; i++) {
byteMap[i] = REPLACEMENT_CHAR;
}
for (int i = 0; i < MAX_BYTE_INDEX; i++) {
byteMap[charMap[i]] = (byte)i;
}
maps = new Object[2];
maps[0] = charMap;
maps[1] = byteMap;
charsetMap.put(csName, maps);
}
byteToChar = (char[])maps[0];
charToByte = (byte[])maps[1];
charsetName = csName;
}
}
/**
* Set the output buffer size
*
* @param size The new buffer size (>= {@link TdsCore#MIN_PKT_SIZE} <= {@link TdsCore#MAX_PKT_SIZE}).
*/
void setBufferSize(int size) {
if (size < outBufferPtr || size == bufferSize) {
return; // Can't shrink buffer size;
}
if (size < TdsCore.MIN_PKT_SIZE || size > TdsCore.MAX_PKT_SIZE) {
throw new IllegalArgumentException("Invalid buffer size parameter " + size);
}
byte[] tmp = new byte[size];
System.arraycopy(outBuffer, 0, tmp, 0, outBufferPtr);
outBuffer = tmp;
}
/**
* Set the current output packet type.
*
* @param pktType The packet type eg TdsCore.QUERY_PKT.
*/
void setPacketType(byte pktType) {
this.pktType = pktType;
}
/**
* Write a byte to the output stream.
*
* @param b The byte value to write.
* @throws IOException
*/
void write(byte b) throws IOException {
if (outBufferPtr == outBuffer.length) {
putPacket(0);
}
outBuffer[outBufferPtr++] = b;
}
/**
* Write an array of bytes to the output stream.
*
* @param b The byte array to write.
* @throws IOException
*/
void write(byte[] b) throws IOException {
int bytesToWrite = b.length;
int off = 0;
while (bytesToWrite > 0) {
int available = outBuffer.length - outBufferPtr;
if (available == 0) {
putPacket(0);
continue;
}
int bc = (available > bytesToWrite) ? bytesToWrite : available;
System.arraycopy(b, off, outBuffer, outBufferPtr, bc);
off += bc;
outBufferPtr += bc;
bytesToWrite -= bc;
}
}
/**
* Write a ByteBuffer to the output stream.
*
* @param bb The ByteBuffer to write.
* @throws IOException
*/
void write(ByteBuffer bb) throws IOException {
int bytesToWrite = bb.remaining();
while (bytesToWrite > 0) {
int available = outBuffer.length - outBufferPtr;
if (available == 0) {
putPacket(0);
continue;
}
int bc = (available > bytesToWrite) ? bytesToWrite : available;
bb.get(outBuffer, outBufferPtr, bc);
outBufferPtr += bc;
bytesToWrite -= bc;
}
}
/**
* Write a partial byte buffer to the output stream.
*
* @param b The byte array buffer.
* @param off The offset into the byte array.
* @param len The number of bytes to write.
* @throws IOException
*/
void write(byte[] b, int off, int len) throws IOException {
int limit = (off + len) > b.length? b.length: off + len;
int bytesToWrite = limit - off;
int i = len - bytesToWrite;
while (bytesToWrite > 0) {
int available = outBuffer.length - outBufferPtr;
if (available == 0) {
putPacket(0);
continue;
}
int bc = (available > bytesToWrite)? bytesToWrite: available;
System.arraycopy(b, off, outBuffer, outBufferPtr, bc);
off += bc;
outBufferPtr += bc;
bytesToWrite -= bc;
}
for (; i > 0; i--) {
write((byte) 0);
}
}
/**
* Write an int value to the output stream.
*
* @param i The int value to write.
* @throws IOException
*/
void write(int i) throws IOException {
write((byte) i);
write((byte) (i >> 8));
write((byte) (i >> 16));
write((byte) (i >> 24));
}
/**
* Write a short value to the output stream.
*
* @param s The short value to write.
* @throws IOException
*/
void write(short s) throws IOException {
write((byte) s);
write((byte) (s >> 8));
}
/**
* Write a long value to the output stream.
*
* @param l The long value to write.
* @throws IOException
*/
void write(long l) throws IOException {
write((byte) l);
write((byte) (l >> 8));
write((byte) (l >> 16));
write((byte) (l >> 24));
write((byte) (l >> 32));
write((byte) (l >> 40));
write((byte) (l >> 48));
write((byte) (l >> 56));
}
/**
* Write a double value to the output stream.
*
* @param f The double value to write.
* @throws IOException
*/
void write(double f) throws IOException {
long l = Double.doubleToLongBits(f);
write((byte) l);
write((byte) (l >> 8));
write((byte) (l >> 16));
write((byte) (l >> 24));
write((byte) (l >> 32));
write((byte) (l >> 40));
write((byte) (l >> 48));
write((byte) (l >> 56));
}
/**
* Write a float value to the output stream.
*
* @param f The float value to write.
* @throws IOException
*/
void write(float f) throws IOException {
int l = Float.floatToIntBits(f);
write((byte) l);
write((byte) (l >> 8));
write((byte) (l >> 16));
write((byte) (l >> 24));
}
/**
* Write a String to the output stream as translated bytes.
*
* @param s The String to write.
* @param info The CharsetInfo instance defining the charset.
* @throws IOException
*/
void write(String s, Charset info) throws IOException {
int len = s.length();
char chars[] = (len > charBuffer.length)? new char[len]: charBuffer;
s.getChars(0, len, chars, 0);
write(chars, len, info);
}
/**
* Write a String to the output stream as translated bytes.
*
* @param chars the char[] to write.
* @param len the length of the string.
* @param info the CharsetInfo instance defining the charset.
* @throws IOException
*/
void write(char chars[], int len, Charset info) throws IOException {
if (info.name().equals(charsetName)) {
// OK Use our highspeed converter
byte bytes[] = (len > byteBuffer.length)? new byte[len]: byteBuffer;
for (int i = 0; i < len; i++) {
bytes[i] = charToByte[chars[i]];
}
write(bytes, 0, len);
} else {
// Fall back on the JVM routines
CharBuffer cb = CharBuffer.wrap(chars, 0, len);
ByteBuffer bb = info.encode(cb);
len = bb.remaining();
byte bytes[] = (len > byteBuffer.length)? new byte[len]: byteBuffer;
bb.get(bytes, 0, len);
write(bytes, 0, len);
}
}
/**
* Write a String object to the output stream as unicode.
*
* @param chars the char[] to write.
* @param len the length of the array to write.
* @throws IOException
*/
void writeUnicode(char chars[], int len) throws IOException {
int src = 0;
while (src < len) {
int available = outBuffer.length - outBufferPtr;
if (available == 0) {
putPacket(0);
available = outBuffer.length - outBufferPtr;
}
if (available == 1) {
write((byte)chars[src]);
putPacket(0);
write((byte)(chars[src++] >> 8));
available = outBuffer.length - outBufferPtr;
if (src == len) {
break;
}
}
available /= 2;
byte buf[] = outBuffer;
int ptr = outBufferPtr;
int limit = src + ((len - src > available)? available: len - src);
while (src < limit) {
int c = chars[src++];
buf[ptr] = (byte)c;
buf[ptr + 1] = (byte)(c >> 8);
ptr += 2;
}
outBufferPtr = ptr;
}
}
/**
* Write a String object to the output stream as unicode.
*
* @param s The String to write.
* @throws IOException
*/
void writeUnicode(String s) throws IOException {
int len = s.length();
char chars[] = (len > charBuffer.length)? new char[len]: charBuffer;
s.getChars(0, len, chars, 0);
writeUnicode(chars, len);
}
/**
* Output a java.sql.Date/Time/Timestamp value to the server
* as a Sybase datetime value.
*
* @param value the date value to write
*/
void write(DateTime value)
throws IOException {
if (value == null) {
write((byte) 0);
return;
}
write((byte) 8);
write((int)value.getDate());
write((int)value.getTime());
}
/**
* Write a BigDecimal value to the output stream.
*
* @param value The BigDecimal value to write.
* @param serverType the server type (sqlserver, sybase).
* @throws IOException
*/
void write(BigDecimal value, int serverType) throws IOException {
if (value == null) {
write((byte) 0);
} else {
byte signum = (byte) (value.signum() < 0 ? 0 : 1);
BigInteger bi = value.unscaledValue();
byte mantisse[] = bi.abs().toByteArray();
byte len = (byte) (mantisse.length + 1);
if (len > 17) {
// Should never happen now as value is normalized elsewhere
throw new IOException("BigDecimal to big to send");
}
if (serverType == TdsCore.SYBASE) {
write((byte) len);
// Sybase TDS5 stores MSB first opposite sign!
// length, prec, scale already sent in parameter descriptor.
write((byte) ((signum == 0) ? 1 : 0));
for (int i = 0; i < mantisse.length; i++) {
write((byte) mantisse[i]);
}
} else {
write((byte) len);
write((byte) signum);
for (int i = mantisse.length - 1; i >= 0; i--) {
write((byte) mantisse[i]);
}
}
}
}
/**
* Flush the packet to the output stream setting the last packet flag.
*
* @throws IOException
*/
void flush() throws IOException {
putPacket(1);
}
/**
* Write the TDS packet to the network.
*
* @param last Set to 1 if this is the last packet else 0.
* @throws IOException
*/
private void putPacket(int last) throws IOException {
if (isClosed) {
throw new IOException(Messages.get("error.io.outclosed"));
}
outBuffer[0] = pktType;
outBuffer[1] = (byte) last; // last segment indicator
outBuffer[2] = (byte) (outBufferPtr >> 8);
outBuffer[3] = (byte) outBufferPtr;
outBuffer[4] = 0;
outBuffer[5] = 0;
outBuffer[6] = (byte) ((tds.getTdsVersion() >= TdsCore.TDS70) ? 1 : 0);
outBuffer[7] = 0;
socket.sendBytes(outBuffer);
outBufferPtr = TdsCore.PKT_HDR_LEN;
}
/**
* Retrieves the next input byte without reading forward.
*
* @return the next byte in the input stream as an <code>int</code>
* @throws IOException if an I/O error occurs
*/
int peek() throws IOException {
if (inBufferPtr >= inBufferLen) {
getPacket();
}
return (int) inBuffer[inBufferPtr] & 0xFF;
}
/**
* Reads the next input byte from the server response stream.
*
* @return the next byte in the input stream as an <code>int</code>
* @throws IOException if an I/O error occurs
*/
int read() throws IOException {
if (inBufferPtr >= inBufferLen) {
getPacket();
}
return (int) inBuffer[inBufferPtr++] & 0xFF;
}
/**
* Reads a byte array from the server response stream.
*
* @param b the byte array to read into
* @return the number of bytes read as an <code>int</code>
* @throws IOException if an I/O error occurs
*/
int read(byte[] b) throws IOException {
return read(b, 0, b.length);
}
/**
* Reads a byte array from the server response stream, specifying a start
* offset and length.
*
* @param b the byte array
* @param off the starting offset in the array
* @param len the number of bytes to read
* @return the number of bytes read as an <code>int</code>
* @throws IOException if an I/O error occurs
*/
int read(byte[] b, int off, int len) throws IOException {
int bytesToRead = len;
while (bytesToRead > 0) {
if (inBufferPtr >= inBufferLen) {
getPacket();
}
int available = inBufferLen - inBufferPtr;
int bc = (available > bytesToRead) ? bytesToRead : available;
System.arraycopy(inBuffer, inBufferPtr, b, off, bc);
off += bc;
bytesToRead -= bc;
inBufferPtr += bc;
}
return len;
}
/**
* Reads a <code>String</code> from the server response stream, creating
* it from a translated <code>byte</code> array.
* @param len the length of the string to read <b>in bytes</b>
* @param info descriptor of the charset to use
* @return the result as a <code>String</code>
* @throws IOException if an I/O error occurs
*/
String readString(int len, Charset info) throws IOException {
byte[] bytes = (len > byteBuffer.length) ? new byte[len] : byteBuffer;
read(bytes, 0, len);
if (info.name().equals(charsetName)) {
// OK we have a high speed mapping for this one
char[] chars = (len > charBuffer.length)? new char[len]: charBuffer;
for (int i = 0; i < len; i++) {
chars[i] = byteToChar[bytes[i] & 0xFF];
}
return new String(chars, 0, len);
}
//
// Fall back on the full (but slow) Charset decoder.
//
return info.decode(ByteBuffer.wrap(bytes, 0, len)).toString();
}
/**
* Reads a <code>String</code> object from the server response stream.
* @param len the length of the string to read <b>in characters</b>
* @return the result as a <code>String</code>
* @throws IOException if an I/O error occurs
*/
String readUnicode(int len) throws IOException {
char[] chars = (len > charBuffer.length) ? new char[len] : charBuffer;
int dest = 0;
while (dest < len) {
int available = inBufferLen - inBufferPtr;
if (available == 0) {
getPacket();
available = inBufferLen - inBufferPtr;
}
if (available == 1) {
// A unicode char might be split over two packets.
int b1 = read();
chars[dest++] = (char)(b1 | (read() << 8));
available = inBufferLen - inBufferPtr;
if (dest == len) {
break;
}
}
available /= 2;
byte buf[] = inBuffer;
int ptr = inBufferPtr;
int limit = dest + ((len - dest > available)? available: len - dest);
while (dest < limit) {
// High speed copy using local variables
chars[dest++] = (char)((buf[ptr] & 0xFF) | (buf[ptr+1] << 8));
ptr += 2;
}
inBufferPtr = ptr;
}
return new String(chars, 0, len);
}
/**
* Reads a <code>short</code> value from the server response stream.
*
* @return the result as a <code>short</code>
* @throws IOException if an I/O error occurs
*/
short readShort() throws IOException {
if (inBufferPtr >= inBufferLen) {
getPacket();
}
int b1 = inBuffer[inBufferPtr++] & 0xFF;
if (inBufferPtr >= inBufferLen) {
getPacket();
}
int b2 = inBuffer[inBufferPtr++] << 8;
return (short) (b1 | b2);
}
/**
* Reads an <code>int</code> value from the server response stream.
*
* @return the result as a <code>int</code>
* @throws IOException if an I/O error occurs
*/
int readInt() throws IOException {
if (inBufferLen - inBufferPtr > 3) {
int b1 = inBuffer[inBufferPtr++] & 0xFF;
int b2 = inBuffer[inBufferPtr++] & 0xFF;
int b3 = inBuffer[inBufferPtr++] & 0xFF;
return (inBuffer[inBufferPtr++] << 24)
| (b3 << 16) | (b2 << 8) | b1;
}
int b1 = read();
int b2 = read() << 8;
int b3 = read() << 16;
int b4 = read() << 24;
return b4 | b3 | b2 | b1;
}
/**
* Reads a <code>long</code> value from the server response stream.
*
* @return the result as a <code>long</code>
* @throws IOException if an I/O error occurs
*/
long readLong() throws IOException {
if (inBufferLen - inBufferPtr > 7) {
long b1 = inBuffer[inBufferPtr++] & 0xFFL;
long b2 = (inBuffer[inBufferPtr++] & 0xFFL) << 8;
long b3 = (inBuffer[inBufferPtr++] & 0xFFL) << 16;
long b4 = (inBuffer[inBufferPtr++] & 0xFFL) << 24;
long b5 = (inBuffer[inBufferPtr++] & 0xFFL) << 32;
long b6 = (inBuffer[inBufferPtr++] & 0xFFL) << 40;
long b7 = (inBuffer[inBufferPtr++] & 0xFFL) << 48;
long b8 = (long)inBuffer[inBufferPtr++] << 56;
return b1 | b2 | b3 | b4 | b5 | b6 | b7 | b8;
}
long b1 = ((long) read());
long b2 = ((long) read()) << 8;
long b3 = ((long) read()) << 16;
long b4 = ((long) read()) << 24;
long b5 = ((long) read()) << 32;
long b6 = ((long) read()) << 40;
long b7 = ((long) read()) << 48;
long b8 = ((long) read()) << 56;
return b1 | b2 | b3 | b4 | b5 | b6 | b7 | b8;
}
/**
* Reads an <code>unsigned long</code> value from the server response stream.
*
* @return the result as a <code>BigDecimal</code>
* @throws IOException if an I/O error occurs
*/
BigDecimal readUnsignedLong() throws IOException {
int b1 = read();
long b2 = read();
long b3 = ((long) read()) << 8;
long b4 = ((long) read()) << 16;
long b5 = ((long) read()) << 24;
long b6 = ((long) read()) << 32;
long b7 = ((long) read()) << 40;
long b8 = ((long) read()) << 48;
// Convert via String as BigDecimal(long) is actually BigDecimal(double)
// on older versions of java
return new BigDecimal(Long.toString(b2 | b3 | b4 | b5 | b6 | b7 | b8))
.multiply(new BigDecimal(256))
.add(new BigDecimal(b1));
}
/**
* Read a MONEY value from the server response stream.
*
* @param len the length of the money type.
* @return The java.math.BigDecimal value or null.
* @throws IOException
*/
BigDecimal readMoney(int len) throws IOException {
if (len == 4) {
return BigDecimal.valueOf(readInt(), 4);
} else
if (len == 8) {
long msw = (long)readInt() << 32;
long lsw = readInt() & 0xFFFFFFFFL;
return BigDecimal.valueOf((lsw | msw), 4);
} else if (len != 0) {
throw new IOException("Invalid money value.");
}
return null;
}
/**
* Get a DATETIME value from the server response stream.
*
* @param len the length of the datatime data type.
* @return The java.sql.Timestamp value or null.
* @throws java.io.IOException
*/
DateTime readDatetime(final int len)
throws IOException {
int daysSince1900;
int time;
int minutes;
switch (len) {
case 0:
return null;
case 8:
// A datetime is made of of two 32 bit integers
// The first one is the number of days since 1900
// The second integer is the number of seconds*300
// Negative days indicate dates earlier than 1900.
// The full range is 1753-01-01 to 9999-12-31.
daysSince1900 = readInt();
time = readInt();
return new DateTime(daysSince1900, time);
case 4:
// A smalldatetime is two 16 bit integers.
// The first is the number of days past January 1, 1900,
// the second smallint is the number of minutes past
// midnight.
// The full range is 1900-01-01 to 2079-06-06.
daysSince1900 = readShort() & 0xFFFF;
minutes = readShort();
return new DateTime((short) daysSince1900, (short) minutes);
default:
throw new IOException("Invalid DATETIME value with size of "
+ len + " bytes.");
}
}
/**
* Discards bytes from the server response stream.
*
* @param skip the number of bytes to discard
* @return the number of bytes skipped
*/
int skip(int skip) throws IOException {
int tmp = skip;
while (skip > 0) {
if (inBufferPtr >= inBufferLen) {
getPacket();
}
int available = inBufferLen - inBufferPtr;
if (skip > available) {
skip -= available;
inBufferPtr = inBufferLen;
} else {
inBufferPtr += skip;
skip = 0;
}
}
return tmp;
}
/**
* Consumes the rest of the server response, without parsing it.
* <p/>
* <b>Note:</b> Use only in extreme cases, packets will not be parsed and
* could leave the connection in an inconsistent state.
*/
void skipToEnd() {
try {
// No more data to read.
inBufferPtr = inBufferLen;
// Now consume all data until we get the last buffer
while (inBuffer[1] != 1) {
inBuffer = socket.getNetPacket(inBuffer);
}
} catch (IOException ex) {
// Ignore it. Probably no more packets.
}
}
/**
* Closes this response stream. The stream id is unlinked from the
* underlying shared socket as well.
*/
void close() {
isClosed = true;
}
/**
* Creates a simple <code>InputStream</code> over the server response.
* <p/>
* This method can be used to obtain a stream which can be passed to
* <code>InputStreamReader</code>s to assist in reading multi byte
* character sets.
*
* @param len the number of bytes available in the server response
* @return the <code>InputStream</code> built over the server response
*/
InputStream getInputStream(int len) {
tdsInputStream.init(len);
return tdsInputStream;
}
/**
* Creates a simple <code>InputStream</code> over the server response.
* <p/>
* This method can be used to obtain a stream which can be passed to
* <code>InputStreamReader</code>s to assist in reading multi byte
* character sets.
*
* @return the <code>InputStream</code> built over the server response
*/
InputStream getTDS90InputStream() throws IOException {
tds90InputStream.init();
return tds90InputStream;
}
/**
* Read the next TDS packet from the network.
*
* @throws IOException if an I/O error occurs
*/
private void getPacket() throws IOException {
while (inBufferPtr >= inBufferLen) {
if (isClosed) {
throw new IOException(Messages.get("error.io.inclosed"));
}
inBuffer = socket.getNetPacket(inBuffer);
inBufferLen = socket.getPktLen(inBuffer);
inBufferPtr = TdsCore.PKT_HDR_LEN;
}
}
/**
* Simple inner class implementing an <code>InputStream</code> over the
* server response.
*/
private static class TdsInputStream extends InputStream {
/** The underlying <code>ResponseStream</code>. */
private TdsStream tds;
/** The maximum amount of data to make available. */
private int maxLen;
/**
* Creates a <code>TdsInputStream</code> instance.
*
* @param tds the underlying <code>ResponseStream</code>
*/
public TdsInputStream(TdsStream tds) {
this.tds = tds;
}
/**
* initialize the stream and set the length.
* @param len the length of byte data available.
*/
public void init(int len)
{
this.maxLen = len;
}
public int read() throws IOException {
return (maxLen-- > 0)? tds.read(): -1;
}
public int read(byte[] b) throws IOException {
return read(b, 0, b.length);
}
public int read(byte[] b, int off, int len) throws IOException {
if (maxLen < 1) {
return -1;
}
len = (len > this.maxLen)? this.maxLen: len;
this.maxLen -= len;
return tds.read(b, off, len);
}
public int available() throws IOException {
return maxLen;
}
public void close() throws IOException {
// Empty IO Stream
while (this.maxLen-- > 0) {
tds.read();
}
}
}
/**
* Simple inner class implementing an <code>InputStream</code> over the
* server response.
* <p/>Used to read SQL 2005 streamed data.
*/
private static class Tds90InputStream extends InputStream {
/** The underlying <code>ResponseStream</code>. */
private TdsStream tds;
/** End of file flag. */
private boolean eof;
/** The TDS fragement size or 0 for EOF. */
private int fragSize;
/**
* Creates a <code>Tds90InputStream</code> instance.
*
* @param tds the underlying <code>ResponseStream</code>
*/
public Tds90InputStream(TdsStream tds) {
this.tds = tds;
}
/**
* Initialise the stream.
*
* @throws IOException
*/
public void init() throws IOException {
this.fragSize = tds.readInt();
this.eof = this.fragSize < 1;
}
public int read() throws IOException {
while (!this.eof) {
if (this.fragSize-- > 0) {
return tds.read();
}
this.fragSize = tds.readInt();
this.eof = this.fragSize < 1;
}
return -1;
}
public int read(byte[] b) throws IOException {
return read(b, 0, b.length);
}
public int read(byte[] b, int off, int len) throws IOException {
if (this.eof) {
return -1;
}
int saveLen = len;
while (len > 0 && !this.eof) {
int bc = (len > this.fragSize)? this.fragSize: len;
tds.read(b, off, bc);
this.fragSize -= bc;
if (this.fragSize < 1) {
this.fragSize = tds.readInt();
this.eof = this.fragSize < 1;
}
len -= bc;
off += bc;
}
return saveLen - len;
}
public void close() throws IOException {
// Empty IO Stream
while (!this.eof) {
read();
}
}
}
}
The table below shows all metrics for TdsStream.java.
| Metric | Value | Description | |
|---|---|---|---|
| BLOCKS | 123.00 | Number of blocks | |
| BLOCK_COMMENT | 0.00 | Number of block comment lines | |
| COMMENTS | 357.00 | Comment lines | |
| COMMENT_DENSITY | 0.75 | Comment density | |
| COMPARISONS | 89.00 | Number of comparison operators | |
| CYCLOMATIC | 143.00 | Cyclomatic complexity | |
| DECL_COMMENTS | 89.00 | Comments in declarations | |
| DOC_COMMENT | 311.00 | Number of javadoc comment lines | |
| ELOC | 473.00 | Effective lines of code | |
| EXEC_COMMENTS | 17.00 | Comments in executable code | |
| EXITS | 50.00 | Procedure exits | |
| FUNCTIONS | 52.00 | Number of function declarations | |
| HALSTEAD_DIFFICULTY | 136.10 | Halstead difficulty | |
| HALSTEAD_EFFORT | 0.00 | Halstead effort | |
| INTERFACE_COMPLEXITY | 226.00 | Interface complexity | |
| JAVA0001 | 0.00 | JAVA0001 Package name does not contain only lower case letters | |
| JAVA0002 | 0.00 | JAVA0002 Package name does not begin with a top level domain name or country code | |
| JAVA0003 | 0.00 | JAVA0003 Minimize use of on-demand (.*) imports | |
| JAVA0004 | 0.00 | JAVA0004 Unnecessary import from java.lang | |
| JAVA0005 | 1.00 | JAVA0005 Imports not in specified order | |
| JAVA0006 | 0.00 | JAVA0006 Empty finally block | |
| JAVA0007 | 0.00 | JAVA0007 Should not declare public field | |
| JAVA0008 | 0.00 | JAVA0008 Empty catch block | |
| JAVA0009 | 0.00 | JAVA0009 Protected member in final class | |
| JAVA0010 | 0.00 | JAVA0010 Non-instantiable class does not contain a non-private static member | |
| JAVA0011 | 0.00 | JAVA0011 Abstract class does not contain an abstract method | |
| JAVA0012 | 0.00 | JAVA0012 Non-constructor method with same name as declaring class | |
| JAVA0013 | 0.00 | JAVA0013 Non-blank final field is not static | |
| JAVA0014 | 0.00 | JAVA0014 Class with only static members has non-private constructor | |
| JAVA0015 | 0.00 | JAVA0015 Package class contains public nested type | |
| JAVA0016 | 0.00 | JAVA0016 Abstract class contains public constructor | |
| JAVA0017 | 0.00 | JAVA0017 Class name does not have required form | |
| JAVA0018 | 0.00 | JAVA0018 Method name does not have required form | |
| JAVA0019 | 0.00 | JAVA0019 Interface name does not have required form | |
| JAVA0020 | 0.00 | JAVA0020 Field name does not have required form | |
| JAVA0021 | 0.00 | JAVA0021 Interface method name does not have required form | |
| JAVA0022 | 0.00 | JAVA0022 Static final field name does not have required form | |
| JAVA0023 | 0.00 | JAVA0023 Empty finalize method | |
| JAVA0024 | 0.00 | JAVA0024 Empty class | |
| JAVA0025 | 0.00 | JAVA0025 Method override is empty | |
| JAVA0026 | 0.00 | JAVA0026 Finalize method with parameters | |
| JAVA0029 | 0.00 | JAVA0029 Private method not used | |
| JAVA0030 | 0.00 | JAVA0030 Private field not used | |
| JAVA0031 | 0.00 | JAVA0031 Case statement not properly closed | |
| JAVA0032 | 0.00 | JAVA0032 Switch statement missing default | |
| JAVA0033 | 0.00 | JAVA0033 default: not last case in switch statement | |
| JAVA0034 | 0.00 | JAVA0034 Missing braces in if statement | |
| JAVA0035 | 0.00 | JAVA0035 Missing braces in for statement | |
| JAVA0036 | 0.00 | JAVA0036 Missing braces in while statement | |
| JAVA0038 | 0.00 | JAVA0038 Non-case label in switch statement | |
| JAVA0039 | 0.00 | JAVA0039 Break statement with label | |
| JAVA0040 | 0.00 | JAVA0040 Switch statement contains N cases (maximum: M) | |
| JAVA0041 | 0.00 | JAVA0041 Nested synchronized block | |
| JAVA0042 | 0.00 | JAVA0042 Empty synchronized statement | |
| JAVA0043 | 0.00 | JAVA0043 Inner class does not use outer class | |
| JAVA0044 | 0.00 | JAVA0044 Serializable class with no instance variables | |
| JAVA0045 | 0.00 | JAVA0045 Serializable class with only transient fields | |
| JAVA0046 | 0.00 | JAVA0046 Name of class not derived from Exception ends with 'Exception' | |
| JAVA0047 | 0.00 | JAVA0047 Serializable class derives from invalid base class | |
| JAVA0048 | 0.00 | JAVA0048 Name of class derived from Exception does not end with 'Exception' | |
| JAVA0049 | 0.00 | JAVA0049 Nested block at depth N (maximum: M) | |
| JAVA0050 | 0.00 | JAVA0050 Class derives from java.lang.Error | |
| JAVA0051 | 0.00 | JAVA0051 Class derives from java.lang.RuntimeException | |
| JAVA0052 | 0.00 | JAVA0052 Class derives from java.lang.Throwable | |
| JAVA0053 | 0.00 | JAVA0053 Unused label | |
| JAVA0054 | 0.00 | JAVA0054 Inheritance depth N exceeds maximum M | |
| JAVA0055 | 0.00 | JAVA0055 Class should be interface | |
| JAVA0056 | 0.00 | JAVA0056 Unnecessary abstract modifier for interface or annotation | |
| JAVA0057 | 0.00 | JAVA0057 Unnecessary default constructor | |
| JAVA0058 | 0.00 | JAVA0058 Constructor calls super() | |
| JAVA0059 | 0.00 | JAVA0059 Method override only calls super() | |
| JAVA0061 | 0.00 | JAVA0061 Inaccessible member in anonymous class | |
| JAVA0062 | 1.00 | JAVA0062 Public class missing public member or protected constructor | |
| JAVA0063 | 0.00 | JAVA0063 Identifier name should not contain '$' | |
| JAVA0064 | 0.00 | JAVA0064 N variations of identifier name (maximum: M) | |
| JAVA0065 | 0.00 | JAVA0065 Unnecessary final modifier for method in final class | |
| JAVA0066 | 0.00 | JAVA0066 Unnecessary modifier for interface nested type | |
| JAVA0067 | 13.00 | JAVA0067 Array descriptor on identifier name | |
| JAVA0068 | 0.00 | JAVA0068 Modifiers not declared in recommended order | |
| JAVA0071 | 0.00 | JAVA0071 Strings compared with == | |
| JAVA0073 | 0.00 | JAVA0073 Integer division in floating-point context | |
| JAVA0074 | 0.00 | JAVA0074 Use of Object.notify() | |
| JAVA0075 | 0.00 | JAVA0075 Method parameter hides field | |
| JAVA0076 | 76.00 | JAVA0076 Use of magic number | |
| JAVA0077 | 0.00 | JAVA0077 Private field not used in declaring class | |
| JAVA0078 | 0.00 | JAVA0078 Floating point values compared with == | |
| JAVA0079 | 0.00 | JAVA0079 Use of instance to reference static member | |
| JAVA0080 | 0.00 | JAVA0080 Import declaration not used | |
| JAVA0081 | 0.00 | JAVA0081 Boolean literal in comparison | |
| JAVA0082 | 7.00 | JAVA0082 Unnecessary widening cast | |
| JAVA0083 | 0.00 | JAVA0083 Unnecessary instanceof test | |
| JAVA0084 | 0.00 | JAVA0084 Should use compound assignment operator | |
| JAVA0085 | 0.00 | JAVA0085 Use of sun.* class | |
| JAVA0087 | 0.00 | JAVA0087 Use of Thread.sleep() | |
| JAVA0089 | 0.00 | JAVA0089 Use of restricted package | |
| JAVA0092 | 0.00 | JAVA0092 Use of restricted type | |
| JAVA0093 | 0.00 | JAVA0093 Redundant assignment | |
| JAVA0094 | 0.00 | JAVA0094 Field hides a superclass field | |
| JAVA0095 | 0.00 | JAVA0095 Uninitialized private field | |
| JAVA0096 | 0.00 | JAVA0096 Field in nested class hides outer field | |
| JAVA0098 | 0.00 | JAVA0098 Minimize use of implicit field initializers | |
| JAVA0100 | 1.00 | JAVA0100 Class contains N non-final fields (maximum: M) | |
| JAVA0101 | 0.00 | JAVA0101 Unnecessary modifier for field in interface | |
| JAVA0102 | 0.00 | JAVA0102 Last statement in finalize() not super.finalize() | |
| JAVA0103 | 0.00 | JAVA0103 Explicit call to finalize() | |
| JAVA0104 | 0.00 | JAVA0104 finalize() only calls super.finalize() | |
| JAVA0105 | 0.00 | JAVA0105 Duplicate import declaration | |
| JAVA0106 | 0.00 | JAVA0106 Unnecessary import from current package | |
| JAVA0108 | 0.00 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| JAVA0109 | 0.00 | JAVA0109 Incorrect javadoc: no parameter 'parameter' | |
| JAVA0110 | 0.00 | JAVA0110 Incorrect javadoc: no @return tag | |
| JAVA0111 | 0.00 | JAVA0111 Incorrect javadoc: @return tag for void method | |
| JAVA0112 | 0.00 | JAVA0112 Incorrect javadoc: no exception 'exception' in throws | |
| JAVA0113 | 0.00 | JAVA0113 Incorrect javadoc: no @author tag | |
| JAVA0114 | 1.00 | JAVA0114 Incorrect javadoc: no @version tag | |
| JAVA0115 | 3.00 | JAVA0115 Incorrect javadoc: no @throws or @exception tag for 'exception' | |
| JAVA0116 | 0.00 | JAVA0116 Missing javadoc: field 'field' | |
| JAVA0117 | 0.00 | JAVA0117 Missing javadoc: method 'method' | |
| JAVA0118 | 0.00 | JAVA0118 Missing javadoc: type 'type' | |
| JAVA0119 | 0.00 | JAVA0119 Control variable changed within body of for loop | |
| JAVA0123 | 1.00 | JAVA0123 Use all three components of for loop | |
| JAVA0125 | 0.00 | JAVA0125 Continue statement with label | |
| JAVA0126 | 0.00 | JAVA0126 Method declares unchecked exception in throws | |
| JAVA0128 | 2.00 | JAVA0128 Public constructor in non-public class | |
| JAVA0130 | 0.00 | JAVA0130 Non-static method does not use instance fields | |
| JAVA0131 | 0.00 | JAVA0131 Compatible method does not override base | |
| JAVA0132 | 0.00 | JAVA0132 Method overload with compatible signature | |
| JAVA0133 | 0.00 | JAVA0133 Non-synchronized method overrides synchronized method | |
| JAVA0135 | 0.00 | JAVA0135 Only one of Object.equals and Object.hashCode defined: missing 'method' | |
| JAVA0136 | 1.00 | JAVA0136 N methods defined in class (maximum: M) | |
| JAVA0137 | 0.00 | JAVA0137 Non-abstract class missing constructor | |
| JAVA0138 | 0.00 | JAVA0138 N parameters defined for method (maximum: M) | |
| JAVA0139 | 0.00 | JAVA0139 Definition of main other than public static void main(java.lang.String[]) | |
| JAVA0141 | 0.00 | JAVA0141 Unnecessary modifier for method in interface | |
| JAVA0143 | 0.00 | JAVA0143 Synchronized method | |
| JAVA0144 | 0.00 | JAVA0144 Line exceeds maximum M characters | |
| JAVA0145 | 0.00 | JAVA0145 Tab character used in source file | |
| JAVA0150 | 0.00 | JAVA0150 java.lang.Error (or subclass) thrown | |
| JAVA0153 | 0.00 | JAVA0153 Inefficient conversion of integer to string | |
| JAVA0159 | 0.00 | JAVA0159 Inefficient conversion of string to integer | |
| JAVA0160 | 0.00 | JAVA0160 Method does not throw specified exception | |
| JAVA0161 | 0.00 | JAVA0161 Conditional wait() not in loop | |
| JAVA0163 | 0.00 | JAVA0163 Empty statement | |
| JAVA0165 | 0.00 | JAVA0165 Conflicting return statement in finally block | |
| JAVA0166 | 0.00 | JAVA0166 Generic exception caught | |
| JAVA0167 | 0.00 | JAVA0167 ThreadDeath not rethrown | |
| JAVA0169 | 0.00 | JAVA0169 Unnecessary catch block: exception 'exception' | |
| JAVA0170 | 0.00 | JAVA0170 Caught exception not derived from java.lang.Exception | |
| JAVA0171 | 0.00 | JAVA0171 Unused local variable | |
| JAVA0173 | 0.00 | JAVA0173 Unused method parameter | |
| JAVA0174 | 0.00 | JAVA0174 Assigned local variable never used | |
| JAVA0175 | 0.00 | JAVA0175 Successive assignment to variable | |
| JAVA0176 | 0.00 | JAVA0176 Local variable name does not have required form | |
| JAVA0177 | 4.00 | JAVA0177 Variable declaration missing initializer | |
| JAVA0179 | 0.00 | JAVA0179 Local variable hides visible field | |
| JAVA0233 | 0.00 | JAVA0233 Definition of serialVersionUID other than 'private static final long serialVersionUID' | |
| JAVA0234 | 0.00 | JAVA0234 Class is Serializable but does not define serialVersionUID | |
| JAVA0235 | 0.00 | JAVA0235 Class defines serialVersionUID but does not implement Serializable | |
| JAVA0236 | 0.00 | JAVA0236 Attempt to clone an object which does not implement Cloneable | |
| JAVA0237 | 0.00 | JAVA0237 Class implements Cloneable but does not have public clone method | |
| JAVA0238 | 0.00 | JAVA0238 Clone method does not call super.clone() | |
| JAVA0239 | 0.00 | JAVA0239 Class declares 'readObject' or 'writeObject' but does not implement Serializable | |
| JAVA0240 | 0.00 | JAVA0240 Serializable class which declares readObject or writeObject but not both | |
| JAVA0241 | 0.00 | JAVA0241 'readObject' or 'writeObject' should be declared private in Serializable class | |
| JAVA0242 | 0.00 | JAVA0242 Transient field in non-Serializable class | |
| JAVA0243 | 0.00 | JAVA0243 'readResolve' or 'writeReplace' should be declared private or protected | |
| JAVA0244 | 0.00 | JAVA0244 Field or method name in subclass differs only by case from inherited field or method | |
| JAVA0245 | 0.00 | JAVA0245 JUnit TestCase with non-trivial constructor | |
| JAVA0246 | 0.00 | JAVA0246 JUnit assertXXX statement missing message parameter | |
| JAVA0247 | 0.00 | JAVA0247 JUnit 'setUp()' and 'tearDown()' should call super method | |
| JAVA0248 | 0.00 | JAVA0248 JUnit method 'setUp' or 'tearDown' with incorrect signature | |
| JAVA0249 | 0.00 | JAVA0249 JUnit TestCase 'suite()' should be declared static | |
| JAVA0250 | 0.00 | JAVA0250 JUnit TestCase declares testXXX method with incorrect signature | |
| JAVA0251 | 0.00 | JAVA0251 Use '%n' for line breaks in printf/format for platform independence | |
| JAVA0252 | 0.00 | JAVA0252 'enum' is a Java 1.5 reserved word | |
| JAVA0253 | 0.00 | JAVA0253 Not all enum constants consumed in switch statement | |
| JAVA0254 | 0.00 | JAVA0254 Use enhanced for loop construct instead of Iterator | |
| JAVA0255 | 0.00 | JAVA0255 Result of method invocation not used | |
| JAVA0256 | 0.00 | JAVA0256 Assignment of external collection/array to field | |
| JAVA0257 | 0.00 | JAVA0257 Use of 'Constant Interface' anti-pattern | |
| JAVA0258 | 0.00 | JAVA0258 Implement Iterable for foreach compatibility | |
| JAVA0259 | 0.00 | JAVA0259 Return of collection/array field | |
| JAVA0260 | 0.00 | JAVA0260 Use 'enum' instead of Enumerated Type pattern | |
| JAVA0261 | 0.00 | JAVA0261 Use specialized Enum collection types | |
| JAVA0262 | 0.00 | JAVA0262 Use of char in integer context | |
| JAVA0263 | 0.00 | JAVA0263 Long literal ends with 'l' instead of 'L' | |
| JAVA0264 | 0.00 | JAVA0264 Integer math in long context - check for overflow | |
| JAVA0265 | 0.00 | JAVA0265 Use of Throwable.printStackTrace() | |
| JAVA0266 | 0.00 | JAVA0266 Use of System.out | |
| JAVA0267 | 0.00 | JAVA0267 Use of System.err | |
| JAVA0269 | 0.00 | JAVA0269 Contents of StringBuffer never used | |
| JAVA0270 | 1.00 | JAVA0270 Use Java 5.0 enhanced for loop construct to iterate over all elements in an array | |
| JAVA0271 | 0.00 | JAVA0271 Minimize use of on-demand (.*) static imports | |
| JAVA0272 | 0.00 | JAVA0272 Thread.run() called | |
| JAVA0273 | 0.00 | JAVA0273 Non-final derivative of Thread calls start() in constructor | |
| JAVA0274 | 0.00 | JAVA0274 Serializable class has a synchronized readObject() | |
| JAVA0275 | 0.00 | JAVA0275 Serializable class has a synchronized writeObject() and no other synchronized methods | |
| JAVA0276 | 0.00 | JAVA0276 Unnecessary use of String constructor | |
| JAVA0277 | 0.00 | JAVA0277 Iterator.next() implementation does not throw NoSuchElementException | |
| JAVA0278 | 0.00 | JAVA0278 Unnecessary use of Boolean constructor | |
| JAVA0279 | 0.00 | JAVA0279 Serialization method readObject or readObjectNoData calls an overridable method | |
| JAVA0280 | 0.00 | JAVA0280 IllegalMonitorStateException caught | |
| JAVA0281 | 0.00 | JAVA0281 Iterator.next() not called in loop | |
| JAVA0282 | 0.00 | JAVA0282 Call to Iterator.next() in loop which does not test Iterator.hasNext() | |
| JAVA0283 | 0.00 | JAVA0283 Control variable not updated in loop body | |
| JAVA0284 | 0.00 | JAVA0284 Explicit garbage collection | |
| JAVA0285 | 0.00 | JAVA0285 Dereference of potentially null variable | |
| JAVA0286 | 0.00 | JAVA0286 Dereference of null variable | |
| JAVA0287 | 0.00 | JAVA0287 Unnecessary null check | |
| JAVA0288 | 0.00 | JAVA0288 Inconsistent null check | |
| LINES | 1052.00 | Number of lines in the source file | |
| LINE_COMMENT | 46.00 | Number of line comments | |
| LOC | 594.00 | Lines of code | |
| LOGICAL_LINES | 351.00 | Number of statements | |
| LOOPS | 23.00 | Number of loops | |
| NEST_DEPTH | 5.00 | Maximum nesting depth | |
| OPERANDS | 1361.00 | Number of operands | |
| OPERATORS | 2997.00 | Number of operators | |
| PARAMS | 50.00 | Number of formal parameter declarations | |
| PROGRAM_LENGTH | 4358.00 | Halstead program length | |
| PROGRAM_VOCAB | 402.00 | Halstead program vocabulary | |
| PROGRAM_VOLUME | 0.00 | Halstead program volume | |
| RETURNS | 176.00 | Number of return points from functions | |
| SIZE | 33727.00 | Size of the file in bytes | |
| UNIQUE_OPERANDS | 335.00 | Number of unique operands | |
| UNIQUE_OPERATORS | 67.00 | Number of unique operators | |
| WHITESPACE | 101.00 | Number of whitespace lines | |