CsvReader.java
| Index Score | ||
|---|---|---|
 |
 |
com.csvreader |
 |
 |
Squirrel SQL |
View: Reasons, Metrics, Source Code
These are the metrics that contribute to the Enerjy Score for this file, ranked by impact. So the metrics listed at the top influence the score to a greater extent that the metrics listed at the bottom.
| Metric | Description | |
|---|---|---|
| CYCLOMATIC | Cyclomatic complexity |  |
| LINE_COMMENT | Number of line comments | |
| JAVA0145 | JAVA0145 Tab character used in source file | |
| LINES | Number of lines in the source file | |
| ELOC | Effective lines of code | |
| SIZE | Size of the file in bytes | |
| LOC | Lines of code | |
| LOGICAL_LINES | Number of statements | |
| DECL_COMMENTS | Comments in declarations | |
| BLOCKS | Number of blocks | |
| EXEC_COMMENTS | Comments in executable code | |
| COMMENTS | Comment lines | |
| RETURNS | Number of return points from functions | |
| DOC_COMMENT | Number of javadoc comment lines | |
| OPERATORS | Number of operators | |
| JAVA0116 | JAVA0116 Missing javadoc: field 'field' | |
| PROGRAM_LENGTH | Halstead program length | |
| WHITESPACE | Number of whitespace lines | |
| OPERANDS | Number of operands | |
| INTERFACE_COMPLEXITY | Interface complexity | |
| JAVA0007 | JAVA0007 Should not declare public field | |
| COMPARISONS | Number of comparison operators | |
| FUNCTIONS | Number of function declarations | |
| JAVA0049 | JAVA0049 Nested block at depth N (maximum: M) | |
| JAVA0043 | JAVA0043 Inner class does not use outer class | |
| JAVA0128 | JAVA0128 Public constructor in non-public class | |
| JAVA0117 | JAVA0117 Missing javadoc: method 'method' | |
| JAVA0077 | JAVA0077 Private field not used in declaring class | |
| JAVA0032 | JAVA0032 Switch statement missing default | |
| JAVA0076 | JAVA0076 Use of magic number | |
| JAVA0144 | JAVA0144 Line exceeds maximum M characters | |
| JAVA0034 | JAVA0034 Missing braces in if statement | |
| JAVA0040 | JAVA0040 Switch statement contains N cases (maximum: M) | |
| NEST_DEPTH | Maximum nesting depth | |
| PROGRAM_VOCAB | Halstead program vocabulary | |
| UNIQUE_OPERANDS | Number of unique operands | |
| LOOPS | Number of loops | |
| JAVA0115 | JAVA0115 Incorrect javadoc: no @throws or @exception tag for 'exception' | |
| JAVA0179 | JAVA0179 Local variable hides visible field | |
| UNIQUE_OPERATORS | Number of unique operators | |
| PARAMS | Number of formal parameter declarations | |
| JAVA0100 | JAVA0100 Class contains N non-final fields (maximum: M) | |
| JAVA0102 | JAVA0102 Last statement in finalize() not super.finalize() | |
| PROGRAM_VOLUME | Halstead program volume | |
| JAVA0136 | JAVA0136 N methods defined in class (maximum: M) | |
| JAVA0174 | JAVA0174 Assigned local variable never used | |
| JAVA0160 | JAVA0160 Method does not throw specified exception | |
| JAVA0110 | JAVA0110 Incorrect javadoc: no @return tag | |
| JAVA0098 | JAVA0098 Minimize use of implicit field initializers | |
/*
* Java CSV is a stream based library for reading and writing
* CSV and other delimited data.
*
* Copyright (C) Bruce Dunwiddie bruce@csvreader.com
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
package com.csvreader;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.io.StringReader;
import java.nio.charset.Charset;
import java.text.NumberFormat;
import java.util.HashMap;
/**
* A stream based parser for parsing delimited text data from a file or a
* stream.
*/
public class CsvReader {
private Reader inputStream = null;
private String fileName = null;
// this holds all the values for switches that the user is allowed to set
private UserSettings userSettings = new UserSettings();
private Charset charset = null;
private boolean useCustomRecordDelimiter = false;
// this will be our working buffer to hold data chunks
// read in from the data file
private DataBuffer dataBuffer = new DataBuffer();
private ColumnBuffer columnBuffer = new ColumnBuffer();
private RawRecordBuffer rawBuffer = new RawRecordBuffer();
private boolean[] isQualified = null;
private String rawRecord = "";
private HeadersHolder headersHolder = new HeadersHolder();
// these are all more or less global loop variables
// to keep from needing to pass them all into various
// methods during parsing
private boolean startedColumn = false;
private boolean startedWithQualifier = false;
private boolean hasMoreData = true;
private char lastLetter = '\0';
private boolean hasReadNextLine = false;
private int columnsCount = 0;
private long currentRecord = 0;
private String[] values = new String[StaticSettings.INITIAL_COLUMN_COUNT];
private boolean initialized = false;
private boolean closed = false;
/**
* Double up the text qualifier to represent an occurance of the text
* qualifier.
*/
public static final int ESCAPE_MODE_DOUBLED = 1;
/**
* Use a backslash character before the text qualifier to represent an
* occurance of the text qualifier.
*/
public static final int ESCAPE_MODE_BACKSLASH = 2;
/**
* Creates a {@link com.csvreader.CsvReader CsvReader} object using a file
* as the data source.
*
* @param fileName
* The path to the file to use as the data source.
* @param delimiter
* The character to use as the column delimiter.
* @param charset
* The {@link java.nio.charset.Charset Charset} to use while
* parsing the data.
*/
public CsvReader(String fileName, char delimiter, Charset charset)
throws FileNotFoundException {
if (fileName == null) {
throw new IllegalArgumentException(
"Parameter fileName can not be null.");
}
if (charset == null) {
throw new IllegalArgumentException(
"Parameter charset can not be null.");
}
if (!new File(fileName).exists()) {
throw new FileNotFoundException("File " + fileName
+ " does not exist.");
}
this.fileName = fileName;
this.userSettings.Delimiter = delimiter;
this.charset = charset;
isQualified = new boolean[values.length];
}
/**
* Creates a {@link com.csvreader.CsvReader CsvReader} object using a file
* as the data source. Uses ISO-8859-1 as the
* {@link java.nio.charset.Charset Charset}.
*
* @param fileName
* The path to the file to use as the data source.
* @param delimiter
* The character to use as the column delimiter.
*/
public CsvReader(String fileName, char delimiter)
throws FileNotFoundException {
this(fileName, delimiter, Charset.forName("ISO-8859-1"));
}
/**
* Creates a {@link com.csvreader.CsvReader CsvReader} object using a file
* as the data source. Uses a comma as the column delimiter and
* ISO-8859-1 as the {@link java.nio.charset.Charset Charset}.
*
* @param fileName
* The path to the file to use as the data source.
*/
public CsvReader(String fileName) throws FileNotFoundException {
this(fileName, Letters.COMMA);
}
/**
* Constructs a {@link com.csvreader.CsvReader CsvReader} object using a
* {@link java.io.Reader Reader} object as the data source.
*
* @param inputStream
* The stream to use as the data source.
* @param delimiter
* The character to use as the column delimiter.
*/
public CsvReader(Reader inputStream, char delimiter) {
if (inputStream == null) {
throw new IllegalArgumentException(
"Parameter inputStream can not be null.");
}
this.inputStream = inputStream;
this.userSettings.Delimiter = delimiter;
initialized = true;
isQualified = new boolean[values.length];
}
/**
* Constructs a {@link com.csvreader.CsvReader CsvReader} object using a
* {@link java.io.Reader Reader} object as the data source. Uses a
* comma as the column delimiter.
*
* @param inputStream
* The stream to use as the data source.
*/
public CsvReader(Reader inputStream) {
this(inputStream, Letters.COMMA);
}
/**
* Constructs a {@link com.csvreader.CsvReader CsvReader} object using an
* {@link java.io.InputStream InputStream} object as the data source.
*
* @param inputStream
* The stream to use as the data source.
* @param delimiter
* The character to use as the column delimiter.
* @param charset
* The {@link java.nio.charset.Charset Charset} to use while
* parsing the data.
*/
public CsvReader(InputStream inputStream, char delimiter, Charset charset) {
this(new InputStreamReader(inputStream, charset), delimiter);
}
/**
* Constructs a {@link com.csvreader.CsvReader CsvReader} object using an
* {@link java.io.InputStream InputStream} object as the data
* source. Uses a comma as the column delimiter.
*
* @param inputStream
* The stream to use as the data source.
* @param charset
* The {@link java.nio.charset.Charset Charset} to use while
* parsing the data.
*/
public CsvReader(InputStream inputStream, Charset charset) {
this(new InputStreamReader(inputStream, charset));
}
public boolean getCaptureRawRecord() {
return userSettings.CaptureRawRecord;
}
public void setCaptureRawRecord(boolean captureRawRecord) {
userSettings.CaptureRawRecord = captureRawRecord;
}
public String getRawRecord() {
return rawRecord;
}
/**
* Gets whether leading and trailing whitespace characters are being trimmed
* from non-textqualified column data. Default is true.
*
* @return Whether leading and trailing whitespace characters are being
* trimmed from non-textqualified column data.
*/
public boolean getTrimWhitespace() {
return userSettings.TrimWhitespace;
}
/**
* Sets whether leading and trailing whitespace characters should be trimmed
* from non-textqualified column data or not. Default is true.
*
* @param trimWhitespace
* Whether leading and trailing whitespace characters should be
* trimmed from non-textqualified column data or not.
*/
public void setTrimWhitespace(boolean trimWhitespace) {
userSettings.TrimWhitespace = trimWhitespace;
}
/**
* Gets the character being used as the column delimiter. Default is comma,
* ','.
*
* @return The character being used as the column delimiter.
*/
public char getDelimiter() {
return userSettings.Delimiter;
}
/**
* Sets the character to use as the column delimiter. Default is comma, ','.
*
* @param delimiter
* The character to use as the column delimiter.
*/
public void setDelimiter(char delimiter) {
userSettings.Delimiter = delimiter;
}
public char getRecordDelimiter() {
return userSettings.RecordDelimiter;
}
/**
* Sets the character to use as the record delimiter.
*
* @param recordDelimiter
* The character to use as the record delimiter. Default is
* combination of standard end of line characters for Windows,
* Unix, or Mac.
*/
public void setRecordDelimiter(char recordDelimiter) {
useCustomRecordDelimiter = true;
userSettings.RecordDelimiter = recordDelimiter;
}
/**
* Gets the character to use as a text qualifier in the data.
*
* @return The character to use as a text qualifier in the data.
*/
public char getTextQualifier() {
return userSettings.TextQualifier;
}
/**
* Sets the character to use as a text qualifier in the data.
*
* @param textQualifier
* The character to use as a text qualifier in the data.
*/
public void setTextQualifier(char textQualifier) {
userSettings.TextQualifier = textQualifier;
}
/**
* Whether text qualifiers will be used while parsing or not.
*
* @return Whether text qualifiers will be used while parsing or not.
*/
public boolean getUseTextQualifier() {
return userSettings.UseTextQualifier;
}
/**
* Sets whether text qualifiers will be used while parsing or not.
*
* @param useTextQualifier
* Whether to use a text qualifier while parsing or not.
*/
public void setUseTextQualifier(boolean useTextQualifier) {
userSettings.UseTextQualifier = useTextQualifier;
}
/**
* Gets the character being used as a comment signal.
*
* @return The character being used as a comment signal.
*/
public char getComment() {
return userSettings.Comment;
}
/**
* Sets the character to use as a comment signal.
*
* @param comment
* The character to use as a comment signal.
*/
public void setComment(char comment) {
userSettings.Comment = comment;
}
/**
* Gets whether comments are being looked for while parsing or not.
*
* @return Whether comments are being looked for while parsing or not.
*/
public boolean getUseComments() {
return userSettings.UseComments;
}
/**
* Sets whether comments are being looked for while parsing or not.
*
* @param useComments
* Whether comments are being looked for while parsing or not.
*/
public void setUseComments(boolean useComments) {
userSettings.UseComments = useComments;
}
/**
* Gets the current way to escape an occurance of the text qualifier inside
* qualified data.
*
* @return The current way to escape an occurance of the text qualifier
* inside qualified data.
*/
public int getEscapeMode() {
return userSettings.EscapeMode;
}
/**
* Sets the current way to escape an occurance of the text qualifier inside
* qualified data.
*
* @param escapeMode
* The way to escape an occurance of the text qualifier inside
* qualified data.
* @exception IllegalArgumentException
* When an illegal value is specified for escapeMode.
*/
public void setEscapeMode(int escapeMode) throws IllegalArgumentException {
if (escapeMode != ESCAPE_MODE_DOUBLED
&& escapeMode != ESCAPE_MODE_BACKSLASH) {
throw new IllegalArgumentException(
"Parameter escapeMode must be a valid value.");
}
userSettings.EscapeMode = escapeMode;
}
public boolean getSkipEmptyRecords() {
return userSettings.SkipEmptyRecords;
}
public void setSkipEmptyRecords(boolean skipEmptyRecords) {
userSettings.SkipEmptyRecords = skipEmptyRecords;
}
/**
* Safety caution to prevent the parser from using large amounts of memory
* in the case where parsing settings like file encodings don't end up
* matching the actual format of a file. This switch can be turned off if
* the file format is known and tested. With the switch off, the max column
* lengths and max column count per record supported by the parser will
* greatly increase. Default is true.
*
* @return The current setting of the safety switch.
*/
public boolean getSafetySwitch() {
return userSettings.SafetySwitch;
}
/**
* Safety caution to prevent the parser from using large amounts of memory
* in the case where parsing settings like file encodings don't end up
* matching the actual format of a file. This switch can be turned off if
* the file format is known and tested. With the switch off, the max column
* lengths and max column count per record supported by the parser will
* greatly increase. Default is true.
*
* @param safetySwitch
*/
public void setSafetySwitch(boolean safetySwitch) {
userSettings.SafetySwitch = safetySwitch;
}
/**
* Gets the count of columns found in this record.
*
* @return The count of columns found in this record.
*/
public int getColumnCount() {
return columnsCount;
}
/**
* Gets the index of the current record.
*
* @return The index of the current record.
*/
public long getCurrentRecord() {
return currentRecord - 1;
}
/**
* Gets the count of headers read in by a previous call to
* {@link com.csvreader.CsvReader#readHeaders readHeaders()}.
*
* @return The count of headers read in by a previous call to
* {@link com.csvreader.CsvReader#readHeaders readHeaders()}.
*/
public int getHeaderCount() {
return headersHolder.Length;
}
/**
* Returns the header values as a string array.
*
* @return The header values as a String array.
* @exception IOException
* Thrown if this object has already been closed.
*/
public String[] getHeaders() throws IOException {
checkClosed();
if (headersHolder.Headers == null) {
return null;
} else {
// use clone here to prevent the outside code from
// setting values on the array directly, which would
// throw off the index lookup based on header name
String[] clone = new String[headersHolder.Length];
System.arraycopy(headersHolder.Headers, 0, clone, 0,
headersHolder.Length);
return clone;
}
}
public void setHeaders(String[] headers) {
headersHolder.Headers = headers;
headersHolder.IndexByName.clear();
if (headers != null) {
headersHolder.Length = headers.length;
} else {
headersHolder.Length = 0;
}
// use headersHolder.Length here in case headers is null
for (int i = 0; i < headersHolder.Length; i++) {
headersHolder.IndexByName.put(headers[i], Integer.valueOf(i));
}
}
public String[] getValues() throws IOException {
checkClosed();
// need to return a clone, and can't use clone because values.Length
// might be greater than columnsCount
String[] clone = new String[columnsCount];
System.arraycopy(values, 0, clone, 0, columnsCount);
return clone;
}
/**
* Returns the current column value for a given column index.
*
* @param columnIndex
* The index of the column.
* @return The current column value.
* @exception IOException
* Thrown if this object has already been closed.
*/
public String get(int columnIndex) throws IOException {
checkClosed();
if (columnIndex > -1 && columnIndex < columnsCount) {
return values[columnIndex];
} else {
return "";
}
}
/**
* Returns the current column value for a given column header name.
*
* @param headerName
* The header name of the column.
* @return The current column value.
* @exception IOException
* Thrown if this object has already been closed.
*/
public String get(String headerName) throws IOException {
checkClosed();
return get(getIndex(headerName));
}
/**
* Creates a {@link com.csvreader.CsvReader CsvReader} object using a string
* of data as the source. Uses ISO-8859-1 as the
* {@link java.nio.charset.Charset Charset}.
*
* @param data
* The String of data to use as the source.
* @return A {@link com.csvreader.CsvReader CsvReader} object using the
* String of data as the source.
*/
public static CsvReader parse(String data) {
if (data == null) {
throw new IllegalArgumentException(
"Parameter data can not be null.");
}
return new CsvReader(new StringReader(data));
}
/**
* Reads another record.
*
* @return Whether another record was successfully read or not.
* @exception IOException
* Thrown if an error occurs while reading data from the
* source stream.
*/
public boolean readRecord() throws IOException {
checkClosed();
columnsCount = 0;
rawBuffer.Position = 0;
dataBuffer.LineStart = dataBuffer.Position;
hasReadNextLine = false;
// check to see if we've already found the end of data
if (hasMoreData) {
// loop over the data stream until the end of data is found
// or the end of the record is found
do {
if (dataBuffer.Position == dataBuffer.Count) {
checkDataLength();
} else {
startedWithQualifier = false;
// grab the current letter as a char
char currentLetter = dataBuffer.Buffer[dataBuffer.Position];
if (userSettings.UseTextQualifier
&& currentLetter == userSettings.TextQualifier) {
// this will be a text qualified column, so
// we need to set startedWithQualifier to make it
// enter the seperate branch to handle text
// qualified columns
lastLetter = currentLetter;
// read qualified
startedColumn = true;
dataBuffer.ColumnStart = dataBuffer.Position + 1;
startedWithQualifier = true;
boolean lastLetterWasQualifier = false;
char escapeChar = userSettings.TextQualifier;
if (userSettings.EscapeMode == ESCAPE_MODE_BACKSLASH) {
escapeChar = Letters.BACKSLASH;
}
boolean eatingTrailingJunk = false;
boolean lastLetterWasEscape = false;
boolean readingComplexEscape = false;
int escape = ComplexEscape.UNICODE;
int escapeLength = 0;
char escapeValue = (char) 0;
dataBuffer.Position++;
do {
if (dataBuffer.Position == dataBuffer.Count) {
checkDataLength();
} else {
// grab the current letter as a char
currentLetter = dataBuffer.Buffer[dataBuffer.Position];
if (eatingTrailingJunk) {
dataBuffer.ColumnStart = dataBuffer.Position + 1;
if (currentLetter == userSettings.Delimiter) {
endColumn();
} else if ((!useCustomRecordDelimiter && (currentLetter == Letters.CR || currentLetter == Letters.LF))
|| (useCustomRecordDelimiter && currentLetter == userSettings.RecordDelimiter)) {
endColumn();
endRecord();
}
} else if (readingComplexEscape) {
escapeLength++;
switch (escape) {
case ComplexEscape.UNICODE:
escapeValue *= (char) 16;
escapeValue += hexToDec(currentLetter);
if (escapeLength == 4) {
readingComplexEscape = false;
}
break;
case ComplexEscape.OCTAL:
escapeValue *= (char) 8;
escapeValue += (char) (currentLetter - '0');
if (escapeLength == 3) {
readingComplexEscape = false;
}
break;
case ComplexEscape.DECIMAL:
escapeValue *= (char) 10;
escapeValue += (char) (currentLetter - '0');
if (escapeLength == 3) {
readingComplexEscape = false;
}
break;
case ComplexEscape.HEX:
escapeValue *= (char) 16;
escapeValue += hexToDec(currentLetter);
if (escapeLength == 2) {
readingComplexEscape = false;
}
break;
}
if (!readingComplexEscape) {
appendLetter(escapeValue);
} else {
dataBuffer.ColumnStart = dataBuffer.Position + 1;
}
} else if (currentLetter == userSettings.TextQualifier) {
if (lastLetterWasEscape) {
lastLetterWasEscape = false;
lastLetterWasQualifier = false;
} else {
updateCurrentValue();
if (userSettings.EscapeMode == ESCAPE_MODE_DOUBLED) {
lastLetterWasEscape = true;
}
lastLetterWasQualifier = true;
}
} else if (userSettings.EscapeMode == ESCAPE_MODE_BACKSLASH
&& lastLetterWasEscape) {
switch (currentLetter) {
case 'n':
appendLetter(Letters.LF);
break;
case 'r':
appendLetter(Letters.CR);
break;
case 't':
appendLetter(Letters.TAB);
break;
case 'b':
appendLetter(Letters.BACKSPACE);
break;
case 'f':
appendLetter(Letters.FORM_FEED);
break;
case 'e':
appendLetter(Letters.ESCAPE);
break;
case 'v':
appendLetter(Letters.VERTICAL_TAB);
break;
case 'a':
appendLetter(Letters.ALERT);
break;
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
escape = ComplexEscape.OCTAL;
readingComplexEscape = true;
escapeLength = 1;
escapeValue = (char) (currentLetter - '0');
dataBuffer.ColumnStart = dataBuffer.Position + 1;
break;
case 'u':
case 'x':
case 'o':
case 'd':
case 'U':
case 'X':
case 'O':
case 'D':
switch (currentLetter) {
case 'u':
case 'U':
escape = ComplexEscape.UNICODE;
break;
case 'x':
case 'X':
escape = ComplexEscape.HEX;
break;
case 'o':
case 'O':
escape = ComplexEscape.OCTAL;
break;
case 'd':
case 'D':
escape = ComplexEscape.DECIMAL;
break;
}
readingComplexEscape = true;
escapeLength = 0;
escapeValue = (char) 0;
dataBuffer.ColumnStart = dataBuffer.Position + 1;
break;
default:
break;
}
lastLetterWasEscape = false;
// can only happen for ESCAPE_MODE_BACKSLASH
} else if (currentLetter == escapeChar) {
updateCurrentValue();
lastLetterWasEscape = true;
} else {
if (lastLetterWasQualifier) {
if (currentLetter == userSettings.Delimiter) {
endColumn();
} else if ((!useCustomRecordDelimiter && (currentLetter == Letters.CR || currentLetter == Letters.LF))
|| (useCustomRecordDelimiter && currentLetter == userSettings.RecordDelimiter)) {
endColumn();
endRecord();
} else {
dataBuffer.ColumnStart = dataBuffer.Position + 1;
eatingTrailingJunk = true;
}
// make sure to clear the flag for next
// run of the loop
lastLetterWasQualifier = false;
}
}
// keep track of the last letter because we need
// it for several key decisions
lastLetter = currentLetter;
if (startedColumn) {
dataBuffer.Position++;
if (userSettings.SafetySwitch
&& dataBuffer.Position
- dataBuffer.ColumnStart
+ columnBuffer.Position > 100000) {
close();
throw new IOException(
"Maximum column length of 100,000 exceeded in column "
+ NumberFormat
.getIntegerInstance()
.format(
columnsCount)
+ " in record "
+ NumberFormat
.getIntegerInstance()
.format(
currentRecord)
+ ". Set the SafetySwitch property to false"
+ " if you're expecting column lengths greater than 100,000 characters to"
+ " avoid this error.");
}
}
} // end else
} while (hasMoreData && startedColumn);
} else if (currentLetter == userSettings.Delimiter) {
// we encountered a column with no data, so
// just send the end column
lastLetter = currentLetter;
endColumn();
} else if (useCustomRecordDelimiter
&& currentLetter == userSettings.RecordDelimiter) {
// this will skip blank lines
if (startedColumn || columnsCount > 0
|| !userSettings.SkipEmptyRecords) {
endColumn();
endRecord();
} else {
dataBuffer.LineStart = dataBuffer.Position + 1;
}
lastLetter = currentLetter;
} else if (!useCustomRecordDelimiter
&& (currentLetter == Letters.CR || currentLetter == Letters.LF)) {
// this will skip blank lines
if (startedColumn
|| columnsCount > 0
|| (!userSettings.SkipEmptyRecords && (currentLetter == Letters.CR || lastLetter != Letters.CR))) {
endColumn();
endRecord();
} else {
dataBuffer.LineStart = dataBuffer.Position + 1;
}
lastLetter = currentLetter;
} else if (userSettings.UseComments && columnsCount == 0
&& currentLetter == userSettings.Comment) {
// encountered a comment character at the beginning of
// the line so just ignore the rest of the line
lastLetter = currentLetter;
skipLine();
} else if (userSettings.TrimWhitespace
&& (currentLetter == Letters.SPACE || currentLetter == Letters.TAB)) {
// do nothing, this will trim leading whitespace
// for both text qualified columns and non
startedColumn = true;
dataBuffer.ColumnStart = dataBuffer.Position + 1;
} else {
// since the letter wasn't a special letter, this
// will be the first letter of our current column
startedColumn = true;
dataBuffer.ColumnStart = dataBuffer.Position;
boolean lastLetterWasBackslash = false;
boolean readingComplexEscape = false;
int escape = ComplexEscape.UNICODE;
int escapeLength = 0;
char escapeValue = (char) 0;
boolean firstLoop = true;
do {
if (!firstLoop
&& dataBuffer.Position == dataBuffer.Count) {
checkDataLength();
} else {
if (!firstLoop) {
// grab the current letter as a char
currentLetter = dataBuffer.Buffer[dataBuffer.Position];
}
if (!userSettings.UseTextQualifier
&& userSettings.EscapeMode == ESCAPE_MODE_BACKSLASH
&& currentLetter == Letters.BACKSLASH) {
if (lastLetterWasBackslash) {
lastLetterWasBackslash = false;
} else {
updateCurrentValue();
lastLetterWasBackslash = true;
}
} else if (readingComplexEscape) {
escapeLength++;
switch (escape) {
case ComplexEscape.UNICODE:
escapeValue *= (char) 16;
escapeValue += hexToDec(currentLetter);
if (escapeLength == 4) {
readingComplexEscape = false;
}
break;
case ComplexEscape.OCTAL:
escapeValue *= (char) 8;
escapeValue += (char) (currentLetter - '0');
if (escapeLength == 3) {
readingComplexEscape = false;
}
break;
case ComplexEscape.DECIMAL:
escapeValue *= (char) 10;
escapeValue += (char) (currentLetter - '0');
if (escapeLength == 3) {
readingComplexEscape = false;
}
break;
case ComplexEscape.HEX:
escapeValue *= (char) 16;
escapeValue += hexToDec(currentLetter);
if (escapeLength == 2) {
readingComplexEscape = false;
}
break;
}
if (!readingComplexEscape) {
appendLetter(escapeValue);
} else {
dataBuffer.ColumnStart = dataBuffer.Position + 1;
}
} else if (userSettings.EscapeMode == ESCAPE_MODE_BACKSLASH
&& lastLetterWasBackslash) {
switch (currentLetter) {
case 'n':
appendLetter(Letters.LF);
break;
case 'r':
appendLetter(Letters.CR);
break;
case 't':
appendLetter(Letters.TAB);
break;
case 'b':
appendLetter(Letters.BACKSPACE);
break;
case 'f':
appendLetter(Letters.FORM_FEED);
break;
case 'e':
appendLetter(Letters.ESCAPE);
break;
case 'v':
appendLetter(Letters.VERTICAL_TAB);
break;
case 'a':
appendLetter(Letters.ALERT);
break;
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
escape = ComplexEscape.OCTAL;
readingComplexEscape = true;
escapeLength = 1;
escapeValue = (char) (currentLetter - '0');
dataBuffer.ColumnStart = dataBuffer.Position + 1;
break;
case 'u':
case 'x':
case 'o':
case 'd':
case 'U':
case 'X':
case 'O':
case 'D':
switch (currentLetter) {
case 'u':
case 'U':
escape = ComplexEscape.UNICODE;
break;
case 'x':
case 'X':
escape = ComplexEscape.HEX;
break;
case 'o':
case 'O':
escape = ComplexEscape.OCTAL;
break;
case 'd':
case 'D':
escape = ComplexEscape.DECIMAL;
break;
}
readingComplexEscape = true;
escapeLength = 0;
escapeValue = (char) 0;
dataBuffer.ColumnStart = dataBuffer.Position + 1;
break;
default:
break;
}
lastLetterWasBackslash = false;
} else {
if (currentLetter == userSettings.Delimiter) {
endColumn();
} else if ((!useCustomRecordDelimiter && (currentLetter == Letters.CR || currentLetter == Letters.LF))
|| (useCustomRecordDelimiter && currentLetter == userSettings.RecordDelimiter)) {
endColumn();
endRecord();
}
}
// keep track of the last letter because we need
// it for several key decisions
lastLetter = currentLetter;
firstLoop = false;
if (startedColumn) {
dataBuffer.Position++;
if (userSettings.SafetySwitch
&& dataBuffer.Position
- dataBuffer.ColumnStart
+ columnBuffer.Position > 100000) {
close();
throw new IOException(
"Maximum column length of 100,000 exceeded in column "
+ NumberFormat
.getIntegerInstance()
.format(
columnsCount)
+ " in record "
+ NumberFormat
.getIntegerInstance()
.format(
currentRecord)
+ ". Set the SafetySwitch property to false"
+ " if you're expecting column lengths greater than 100,000 characters to"
+ " avoid this error.");
}
}
} // end else
} while (hasMoreData && startedColumn);
}
if (hasMoreData) {
dataBuffer.Position++;
}
} // end else
} while (hasMoreData && !hasReadNextLine);
// check to see if we hit the end of the file
// without processing the current record
if (startedColumn || lastLetter == userSettings.Delimiter) {
endColumn();
endRecord();
}
}
if (userSettings.CaptureRawRecord) {
if (hasMoreData) {
if (rawBuffer.Position == 0) {
rawRecord = new String(dataBuffer.Buffer,
dataBuffer.LineStart, dataBuffer.Position
- dataBuffer.LineStart - 1);
} else {
rawRecord = new String(rawBuffer.Buffer, 0,
rawBuffer.Position)
+ new String(dataBuffer.Buffer,
dataBuffer.LineStart, dataBuffer.Position
- dataBuffer.LineStart - 1);
}
} else {
// for hasMoreData to ever be false, all data would have had to
// have been
// copied to the raw buffer
rawRecord = new String(rawBuffer.Buffer, 0, rawBuffer.Position);
}
} else {
rawRecord = "";
}
return hasReadNextLine;
}
/**
* @exception IOException
* Thrown if an error occurs while reading data from the
* source stream.
*/
private void checkDataLength() throws IOException {
if (!initialized) {
if (fileName != null) {
inputStream = new BufferedReader(new InputStreamReader(
new FileInputStream(fileName), charset),
StaticSettings.MAX_FILE_BUFFER_SIZE);
}
charset = null;
initialized = true;
}
updateCurrentValue();
if (userSettings.CaptureRawRecord && dataBuffer.Count > 0) {
if (rawBuffer.Buffer.length - rawBuffer.Position < dataBuffer.Count
- dataBuffer.LineStart) {
int newLength = rawBuffer.Buffer.length
+ Math.max(dataBuffer.Count - dataBuffer.LineStart,
rawBuffer.Buffer.length);
char[] holder = new char[newLength];
System.arraycopy(rawBuffer.Buffer, 0, holder, 0,
rawBuffer.Position);
rawBuffer.Buffer = holder;
}
System.arraycopy(dataBuffer.Buffer, dataBuffer.LineStart,
rawBuffer.Buffer, rawBuffer.Position, dataBuffer.Count
- dataBuffer.LineStart);
rawBuffer.Position += dataBuffer.Count - dataBuffer.LineStart;
}
try {
dataBuffer.Count = inputStream.read(dataBuffer.Buffer, 0,
dataBuffer.Buffer.length);
} catch (IOException ex) {
close();
throw ex;
}
// if no more data could be found, set flag stating that
// the end of the data was found
if (dataBuffer.Count == -1) {
hasMoreData = false;
}
dataBuffer.Position = 0;
dataBuffer.LineStart = 0;
dataBuffer.ColumnStart = 0;
}
/**
* Read the first record of data as column headers.
*
* @return Whether the header record was successfully read or not.
* @exception IOException
* Thrown if an error occurs while reading data from the
* source stream.
*/
public boolean readHeaders() throws IOException {
boolean result = readRecord();
// copy the header data from the column array
// to the header string array
headersHolder.Length = columnsCount;
headersHolder.Headers = new String[columnsCount];
for (int i = 0; i < headersHolder.Length; i++) {
String columnValue = get(i);
headersHolder.Headers[i] = columnValue;
// if there are duplicate header names, we will save the last one
headersHolder.IndexByName.put(columnValue, Integer.valueOf(i));
}
if (result) {
currentRecord--;
}
columnsCount = 0;
return result;
}
/**
* Returns the column header value for a given column index.
*
* @param columnIndex
* The index of the header column being requested.
* @return The value of the column header at the given column index.
* @exception IOException
* Thrown if this object has already been closed.
*/
public String getHeader(int columnIndex) throws IOException {
checkClosed();
// check to see if we have read the header record yet
// check to see if the column index is within the bounds
// of our header array
if (columnIndex > -1 && columnIndex < headersHolder.Length) {
// return the processed header data for this column
return headersHolder.Headers[columnIndex];
} else {
return "";
}
}
public boolean isQualified(int columnIndex) throws IOException {
checkClosed();
if (columnIndex < columnsCount && columnIndex > -1) {
return isQualified[columnIndex];
} else {
return false;
}
}
/**
* @exception IOException
* Thrown if a very rare extreme exception occurs during
* parsing, normally resulting from improper data format.
*/
private void endColumn() throws IOException {
String currentValue = "";
// must be called before setting startedColumn = false
if (startedColumn) {
if (columnBuffer.Position == 0) {
if (dataBuffer.ColumnStart < dataBuffer.Position) {
int lastLetter = dataBuffer.Position - 1;
if (userSettings.TrimWhitespace && !startedWithQualifier) {
while (lastLetter >= dataBuffer.ColumnStart
&& (dataBuffer.Buffer[lastLetter] == Letters.SPACE || dataBuffer.Buffer[lastLetter] == Letters.TAB)) {
lastLetter--;
}
}
currentValue = new String(dataBuffer.Buffer,
dataBuffer.ColumnStart, lastLetter
- dataBuffer.ColumnStart + 1);
}
} else {
updateCurrentValue();
int lastLetter = columnBuffer.Position - 1;
if (userSettings.TrimWhitespace && !startedWithQualifier) {
while (lastLetter >= 0
&& (columnBuffer.Buffer[lastLetter] == Letters.SPACE || columnBuffer.Buffer[lastLetter] == Letters.SPACE)) {
lastLetter--;
}
}
currentValue = new String(columnBuffer.Buffer, 0,
lastLetter + 1);
}
}
columnBuffer.Position = 0;
startedColumn = false;
if (columnsCount >= 100000 && userSettings.SafetySwitch) {
close();
throw new IOException(
"Maximum column count of 100,000 exceeded in record "
+ NumberFormat.getIntegerInstance().format(
currentRecord)
+ ". Set the SafetySwitch property to false"
+ " if you're expecting more than 100,000 columns per record to"
+ " avoid this error.");
}
// check to see if our current holder array for
// column chunks is still big enough to handle another
// column chunk
if (columnsCount == values.length) {
// holder array needs to grow to be able to hold another column
int newLength = values.length * 2;
String[] holder = new String[newLength];
System.arraycopy(values, 0, holder, 0, values.length);
values = holder;
boolean[] qualifiedHolder = new boolean[newLength];
System.arraycopy(isQualified, 0, qualifiedHolder, 0,
isQualified.length);
isQualified = qualifiedHolder;
}
values[columnsCount] = currentValue;
isQualified[columnsCount] = startedWithQualifier;
currentValue = "";
columnsCount++;
}
private void appendLetter(char letter) {
if (columnBuffer.Position == columnBuffer.Buffer.length) {
int newLength = columnBuffer.Buffer.length * 2;
char[] holder = new char[newLength];
System.arraycopy(columnBuffer.Buffer, 0, holder, 0,
columnBuffer.Position);
columnBuffer.Buffer = holder;
}
columnBuffer.Buffer[columnBuffer.Position++] = letter;
dataBuffer.ColumnStart = dataBuffer.Position + 1;
}
private void updateCurrentValue() {
if (startedColumn && dataBuffer.ColumnStart < dataBuffer.Position) {
if (columnBuffer.Buffer.length - columnBuffer.Position < dataBuffer.Position
- dataBuffer.ColumnStart) {
int newLength = columnBuffer.Buffer.length
+ Math.max(
dataBuffer.Position - dataBuffer.ColumnStart,
columnBuffer.Buffer.length);
char[] holder = new char[newLength];
System.arraycopy(columnBuffer.Buffer, 0, holder, 0,
columnBuffer.Position);
columnBuffer.Buffer = holder;
}
System.arraycopy(dataBuffer.Buffer, dataBuffer.ColumnStart,
columnBuffer.Buffer, columnBuffer.Position,
dataBuffer.Position - dataBuffer.ColumnStart);
columnBuffer.Position += dataBuffer.Position
- dataBuffer.ColumnStart;
}
dataBuffer.ColumnStart = dataBuffer.Position + 1;
}
/**
* @exception IOException
* Thrown if an error occurs while reading data from the
* source stream.
*/
private void endRecord() throws IOException {
// this flag is used as a loop exit condition
// during parsing
hasReadNextLine = true;
currentRecord++;
}
/**
* Gets the corresponding column index for a given column header name.
*
* @param headerName
* The header name of the column.
* @return The column index for the given column header name. Returns
* -1 if not found.
* @exception IOException
* Thrown if this object has already been closed.
*/
public int getIndex(String headerName) throws IOException {
checkClosed();
Integer indexValue = headersHolder.IndexByName.get(headerName);
if (indexValue != null) {
return indexValue.intValue();
} else {
return -1;
}
}
/**
* Skips the next record of data by parsing each column. Does not
* increment
* {@link com.csvreader.CsvReader#getCurrentRecord getCurrentRecord()}.
*
* @return Whether another record was successfully skipped or not.
* @exception IOException
* Thrown if an error occurs while reading data from the
* source stream.
*/
public boolean skipRecord() throws IOException {
checkClosed();
boolean recordRead = false;
if (hasMoreData) {
recordRead = readRecord();
if (recordRead) {
currentRecord--;
}
}
return recordRead;
}
/**
* Skips the next line of data using the standard end of line characters and
* does not do any column delimited parsing.
*
* @return Whether a line was successfully skipped or not.
* @exception IOException
* Thrown if an error occurs while reading data from the
* source stream.
*/
public boolean skipLine() throws IOException {
checkClosed();
// clear public column values for current line
columnsCount = 0;
boolean skippedLine = false;
if (hasMoreData) {
boolean foundEol = false;
do {
if (dataBuffer.Position == dataBuffer.Count) {
checkDataLength();
} else {
skippedLine = true;
// grab the current letter as a char
char currentLetter = dataBuffer.Buffer[dataBuffer.Position];
if (currentLetter == Letters.CR
|| currentLetter == Letters.LF) {
foundEol = true;
}
// keep track of the last letter because we need
// it for several key decisions
lastLetter = currentLetter;
if (!foundEol) {
dataBuffer.Position++;
}
} // end else
} while (hasMoreData && !foundEol);
columnBuffer.Position = 0;
dataBuffer.LineStart = dataBuffer.Position + 1;
}
rawBuffer.Position = 0;
rawRecord = "";
return skippedLine;
}
/**
* Closes and releases all related resources.
*/
public void close() {
if (!closed) {
close(true);
closed = true;
}
}
/**
*
*/
private void close(boolean closing) {
if (!closed) {
if (closing) {
charset = null;
headersHolder.Headers = null;
headersHolder.IndexByName = null;
dataBuffer.Buffer = null;
columnBuffer.Buffer = null;
rawBuffer.Buffer = null;
}
try {
if (initialized) {
inputStream.close();
}
} catch (Exception e) {
// just eat the exception
}
inputStream = null;
closed = true;
}
}
/**
* @exception IOException
* Thrown if this object has already been closed.
*/
private void checkClosed() throws IOException {
if (closed) {
throw new IOException(
"This instance of the CsvReader class has already been closed.");
}
}
/**
*
*/
protected void finalize() {
close(false);
}
private class ComplexEscape {
private static final int UNICODE = 1;
private static final int OCTAL = 2;
private static final int DECIMAL = 3;
private static final int HEX = 4;
}
private static char hexToDec(char hex) {
char result;
if (hex >= 'a') {
result = (char) (hex - 'a' + 10);
} else if (hex >= 'A') {
result = (char) (hex - 'A' + 10);
} else {
result = (char) (hex - '0');
}
return result;
}
private class DataBuffer {
public char[] Buffer;
public int Position;
// / <summary>
// / How much usable data has been read into the stream,
// / which will not always be as long as Buffer.Length.
// / </summary>
public int Count;
// / <summary>
// / The position of the cursor in the buffer when the
// / current column was started or the last time data
// / was moved out to the column buffer.
// / </summary>
public int ColumnStart;
public int LineStart;
public DataBuffer() {
Buffer = new char[StaticSettings.MAX_BUFFER_SIZE];
Position = 0;
Count = 0;
ColumnStart = 0;
LineStart = 0;
}
}
private class ColumnBuffer {
public char[] Buffer;
public int Position;
public ColumnBuffer() {
Buffer = new char[StaticSettings.INITIAL_COLUMN_BUFFER_SIZE];
Position = 0;
}
}
private class RawRecordBuffer {
public char[] Buffer;
public int Position;
public RawRecordBuffer() {
Buffer = new char[StaticSettings.INITIAL_COLUMN_BUFFER_SIZE
* StaticSettings.INITIAL_COLUMN_COUNT];
Position = 0;
}
}
private class Letters {
public static final char LF = '\n';
public static final char CR = '\r';
public static final char QUOTE = '"';
public static final char COMMA = ',';
public static final char SPACE = ' ';
public static final char TAB = '\t';
public static final char POUND = '#';
public static final char BACKSLASH = '\\';
public static final char NULL = '\0';
public static final char BACKSPACE = '\b';
public static final char FORM_FEED = '\f';
public static final char ESCAPE = '\u001B'; // ASCII/ANSI escape
public static final char VERTICAL_TAB = '\u000B';
public static final char ALERT = '\u0007';
}
private class UserSettings {
// having these as publicly accessible members will prevent
// the overhead of the method call that exists on properties
public boolean CaseSensitive;
public char TextQualifier;
public boolean TrimWhitespace;
public boolean UseTextQualifier;
public char Delimiter;
public char RecordDelimiter;
public char Comment;
public boolean UseComments;
public int EscapeMode;
public boolean SafetySwitch;
public boolean SkipEmptyRecords;
public boolean CaptureRawRecord;
public UserSettings() {
CaseSensitive = true;
TextQualifier = Letters.QUOTE;
TrimWhitespace = true;
UseTextQualifier = true;
Delimiter = Letters.COMMA;
RecordDelimiter = Letters.NULL;
Comment = Letters.POUND;
UseComments = false;
EscapeMode = CsvReader.ESCAPE_MODE_DOUBLED;
SafetySwitch = true;
SkipEmptyRecords = true;
CaptureRawRecord = true;
}
}
private class HeadersHolder {
public String[] Headers;
public int Length;
public HashMap<String, Integer> IndexByName;
public HeadersHolder() {
Headers = null;
Length = 0;
IndexByName = new HashMap<String, Integer>();
}
}
private class StaticSettings {
// these are static instead of final so they can be changed in unit test
// isn't visible outside this class and is only accessed once during
// CsvReader construction
public static final int MAX_BUFFER_SIZE = 1024;
public static final int MAX_FILE_BUFFER_SIZE = 4 * 1024;
public static final int INITIAL_COLUMN_COUNT = 10;
public static final int INITIAL_COLUMN_BUFFER_SIZE = 50;
}
}
The table below shows all metrics for CsvReader.java.
| Metric | Value | Description | |
|---|---|---|---|
| BLOCKS | 190.00 | Number of blocks | |
| BLOCK_COMMENT | 20.00 | Number of block comment lines | |
| COMMENTS | 432.00 | Comment lines | |
| COMMENT_DENSITY | 0.50 | Comment density | |
| COMPARISONS | 95.00 | Number of comparison operators | |
| CYCLOMATIC | 285.00 | Cyclomatic complexity | |
| DECL_COMMENTS | 55.00 | Comments in declarations | |
| DOC_COMMENT | 332.00 | Number of javadoc comment lines | |
| ELOC | 869.00 | Effective lines of code | |
| EXEC_COMMENTS | 36.00 | Comments in executable code | |
| EXITS | 26.00 | Procedure exits | |
| FUNCTIONS | 61.00 | Number of function declarations | |
| HALSTEAD_DIFFICULTY | 176.55 | Halstead difficulty | |
| HALSTEAD_EFFORT | 0.00 | Halstead effort | |
| INTERFACE_COMPLEXITY | 147.00 | 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 | 0.00 | JAVA0005 Imports not in specified order | |
| JAVA0006 | 0.00 | JAVA0006 Empty finally block | |
| JAVA0007 | 24.00 | 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 | 4.00 | 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 | 2.00 | JAVA0040 Switch statement contains N cases (maximum: M) | |
| JAVA0041 | 0.00 | JAVA0041 Nested synchronized block | |
| JAVA0042 | 0.00 | JAVA0042 Empty synchronized statement | |
| JAVA0043 | 8.00 | 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 | 8.00 | 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 | 0.00 | 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 | 0.00 | 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 | 13.00 | JAVA0076 Use of magic number | |
| JAVA0077 | 4.00 | 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 | 0.00 | 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 | 5.00 | JAVA0098 Minimize use of implicit field initializers | |
| JAVA0100 | 2.00 | JAVA0100 Class contains N non-final fields (maximum: M) | |
| JAVA0101 | 0.00 | JAVA0101 Unnecessary modifier for field in interface | |
| JAVA0102 | 1.00 | 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 | 1.00 | 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 | 1.00 | 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 | 42.00 | JAVA0116 Missing javadoc: field 'field' | |
| JAVA0117 | 14.00 | 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 | 0.00 | JAVA0123 Use all three components of for loop | |
| JAVA0125 | 0.00 | JAVA0125 Continue statement with label | |
| JAVA0126 | 1.00 | JAVA0126 Method declares unchecked exception in throws | |
| JAVA0128 | 5.00 | 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 | 5.00 | JAVA0144 Line exceeds maximum M characters | |
| JAVA0145 | 6012.00 | 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 | 1.00 | 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 | 1.00 | 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 | 1.00 | 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 | 1.00 | JAVA0177 Variable declaration missing initializer | |
| JAVA0179 | 2.00 | 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 | 1.00 | 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 | 0.00 | 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 | 1775.00 | Number of lines in the source file | |
| LINE_COMMENT | 80.00 | Number of line comments | |
| LOC | 1023.00 | Lines of code | |
| LOGICAL_LINES | 492.00 | Number of statements | |
| LOOPS | 8.00 | Number of loops | |
| NEST_DEPTH | 10.00 | Maximum nesting depth | |
| OPERANDS | 1729.00 | Number of operands | |
| OPERATORS | 3617.00 | Number of operators | |
| PARAMS | 35.00 | Number of formal parameter declarations | |
| PROGRAM_LENGTH | 5346.00 | Halstead program length | |
| PROGRAM_VOCAB | 342.00 | Halstead program vocabulary | |
| PROGRAM_VOLUME | 0.00 | Halstead program volume | |
| RETURNS | 112.00 | Number of return points from functions | |
| SIZE | 47698.00 | Size of the file in bytes | |
| UNIQUE_OPERANDS | 284.00 | Number of unique operands | |
| UNIQUE_OPERATORS | 58.00 | Number of unique operators | |
| WHITESPACE | 320.00 | Number of whitespace lines | |