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Java Source Code / Java Documentation » Testing » Ejb3Unit » com.bm.utils.csv 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   com.bm.utils.csv.CSVLexer

CSVLexer
public class CSVLexer (Code)
Read files in comma separated value format.


Field Summary
final public static  intAFTER
    
final public static  intBEFORE
    
final public static  intCOMMENT
    
final public static  intYYEOF
    
final public static  intYYINITIAL
    

Constructor Summary
public  CSVLexer(java.io.Reader in)
     Creates a new scanner There is also a java.io.InputStream version of this constructor.
public  CSVLexer(java.io.InputStream in)
     Creates a new scanner.

Method Summary
public  voidchangeDelimiter(char newDelim)
     Change this Lexer so that it uses a new delimiter.
public  voidchangeQuote(char newQuote)
     Change this Lexer so that it uses a new character for quoting.
public  intgetLineNumber()
     Get the line number that the last token came from.
public  StringgetNextToken()
     Resumes scanning until the next regular expression is matched, the end of input is encountered or an I/O-Error occurs.
public static  voidmain(String[] args)
     Prints out tokens and line numbers from a file or System.in.
public  voidsetCommentStart(String commentDelims)
     Set the characters that indicate a comment at the beginning of the line. For example if the string "#;!" were passed in, all of the following lines would be comments:
 # Comment
 ; Another Comment
 ! Yet another comment
 
By default there are no comments in CVS files.
public  voidsetEscapes(String escapes, String replacements)
     Specify escape sequences and their replacements.
final public  voidyybegin(int newState)
    
final public  charyycharat(int pos)
     Returns the character at position pos from the matched text. It is equivalent to yytext().charAt(pos), but faster
Parameters:
  pos - the position of the character to fetch.
final public  voidyyclose()
     Closes the input stream.
final public  intyylength()
     Returns the length of the matched text region.
public  voidyypushback(int number)
     Pushes the specified amount of characters back into the input stream. They will be read again by then next call of the scanning method
Parameters:
  number - the number of characters to be read again.
final public  voidyyreset(java.io.Reader reader)
     Resets the scanner to read from a new input stream.
final public  intyystate()
     Returns the current lexical state.
final public  Stringyytext()
     Returns the text matched by the current regular expression.

Field Detail
AFTER
final public static int AFTER(Code)



BEFORE
final public static int BEFORE(Code)
lexical states



COMMENT
final public static int COMMENT(Code)



YYEOF
final public static int YYEOF(Code)
This character denotes the end of file



YYINITIAL
final public static int YYINITIAL(Code)




Constructor Detail
CSVLexer
public CSVLexer(java.io.Reader in)(Code)
Creates a new scanner There is also a java.io.InputStream version of this constructor.
Parameters:
  in - the java.io.Reader to read input from.



CSVLexer
public CSVLexer(java.io.InputStream in)(Code)
Creates a new scanner. There is also java.io.Reader version of this constructor.
Parameters:
  in - the java.io.Inputstream to read input from.




Method Detail
changeDelimiter
public void changeDelimiter(char newDelim) throws BadDelimiterException(Code)
Change this Lexer so that it uses a new delimiter.

The initial character is a comma, the delimiter cannot be changed to a quote or other character that has special meaning in CSV.
Parameters:
  newDelim - delimiter to which to switch.
throws:
  BadDelimiterException - if the character cannot be used as a delimiter.
since:
   ostermillerutils 1.00.00




changeQuote
public void changeQuote(char newQuote) throws BadQuoteException(Code)
Change this Lexer so that it uses a new character for quoting.

The initial character is a double quote ("), the delimiter cannot be changed to a comma or other character that has special meaning in CSV.
Parameters:
  newQuote - character to use for quoting.
throws:
  BadQuoteException - if the character cannot be used as a quote.
since:
   ostermillerutils 1.00.00




getLineNumber
public int getLineNumber()(Code)
Get the line number that the last token came from.

New line breaks that occur in the middle of a token are not counted in the line number count.

If no tokens have been returned, the line number is undefined. line number of the last token.
since:
   ostermillerutils 1.00.00




getNextToken
public String getNextToken() throws java.io.IOException(Code)
Resumes scanning until the next regular expression is matched, the end of input is encountered or an I/O-Error occurs. the next token
exception:
  java.io.IOException - if any I/O-Error occurs



main
public static void main(String[] args)(Code)
Prints out tokens and line numbers from a file or System.in. If no arguments are given, System.in will be used for input. If more arguments are given, the first argument will be used as the name of the file to use as input
Parameters:
  args - program arguments, of which the first is a filename
since:
   ostermillerutils 1.00.00



setCommentStart
public void setCommentStart(String commentDelims)(Code)
Set the characters that indicate a comment at the beginning of the line. For example if the string "#;!" were passed in, all of the following lines would be comments:
 # Comment
 ; Another Comment
 ! Yet another comment
 
By default there are no comments in CVS files. Commas and quotes may not be used to indicate comment lines.
Parameters:
  commentDelims - list of characters a comment line may start with.
since:
   ostermillerutils 1.00.00



setEscapes
public void setEscapes(String escapes, String replacements)(Code)
Specify escape sequences and their replacements. Escape sequences set here are in addition to \\ and \". \\ and \" are always valid escape sequences. This method allows standard escape sequenced to be used. For example "\n" can be set to be a newline rather than an 'n'. A common way to call this method might be:
setEscapes("nrtf", "\n\r\t\f");
which would set the escape sequences to be the Java escape sequences. Characters that follow a \ that are not escape sequences will still be interpreted as that character.
The two arguemnts to this method must be the same length. If they are not, the longer of the two will be truncated.
Parameters:
  escapes - a list of characters that will represent escape sequences.
Parameters:
  replacements - the list of repacement characters for those escape sequences.
since:
   ostermillerutils 1.00.00



yybegin
final public void yybegin(int newState)(Code)
Enters a new lexical state
Parameters:
  newState - the new lexical state



yycharat
final public char yycharat(int pos)(Code)
Returns the character at position pos from the matched text. It is equivalent to yytext().charAt(pos), but faster
Parameters:
  pos - the position of the character to fetch. A value from 0 toyylength()-1. the character at position pos



yyclose
final public void yyclose() throws java.io.IOException(Code)
Closes the input stream.



yylength
final public int yylength()(Code)
Returns the length of the matched text region.



yypushback
public void yypushback(int number)(Code)
Pushes the specified amount of characters back into the input stream. They will be read again by then next call of the scanning method
Parameters:
  number - the number of characters to be read again. This number mustnot be greater than yylength()!



yyreset
final public void yyreset(java.io.Reader reader)(Code)
Resets the scanner to read from a new input stream. Does not close the old reader. All internal variables are reset, the old input stream cannot be reused (internal buffer is discarded and lost). Lexical state is set to ZZ_INITIAL.
Parameters:
  reader - the new input stream



yystate
final public int yystate()(Code)
Returns the current lexical state.



yytext
final public String yytext()(Code)
Returns the text matched by the current regular expression.



Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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