org.apache.batik.css.parser
Class Scanner

java.lang.Object
  |
  +--org.apache.batik.css.parser.Scanner

public class Scanner

extends java.lang.Object

This class represents a CSS scanner - an object which decodes CSS lexical units.

Field Summary

protected int	blankCharacters The characters to skip to create the string which represents the current token.
protected char[]	buffer The recording buffer.
protected int	current The current char.
protected int	end The end offset of the last lexical unit.
protected int	position The current position in the buffer.
protected NormalizingReader	reader The reader.
protected int	start The start offset of the last lexical unit.
protected int	type The type of the current lexical unit.

Constructor Summary

Scanner(java.io.InputStream is, java.lang.String enc)
Creates a new Scanner object.

Scanner(java.io.Reader r)
Creates a new Scanner object.

Scanner(java.lang.String s)
Creates a new Scanner object.

Method Summary

void	clearBuffer() Clears the buffer.
protected int	dotNumber() Scans the decimal part of a number.
protected int	endGap() Returns the end gap of the current lexical unit.
protected void	escape() Scans an escape sequence, if one.
char[]	getBuffer() Returns the buffer used to store the chars.
int	getColumn() Returns the current column.
int	getEnd() Returns the end offset of the last lexical unit.
int	getLine() Returns the current line.
int	getStart() Returns the start offset of the last lexical unit.
java.lang.String	getStringValue() Returns the string representation of the current lexical unit.
int	getType() The current lexical unit type like defined in LexicalUnits.
protected static boolean	isEqualIgnoreCase(int i, char c) Compares the given int with the given character, ignoring case.
int	next() Returns the next token.
protected int	nextChar() Sets the value of the current char to the next character or -1 if the end of stream has been reached.
protected void	nextToken() Returns the next token.
protected int	number() Scans a number.
protected int	numberUnit(boolean integer) Scans the unit of a number.
void	scanAtRule() Scans a @rule value.
protected int	string1() Scans a single quoted string.
protected int	string2() Scans a double quoted string.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

reader

protected NormalizingReader reader

The reader.

current

protected int current

The current char.

buffer

protected char[] buffer

The recording buffer.

position

protected int position

The current position in the buffer.

type

protected int type

The type of the current lexical unit.

start

protected int start

The start offset of the last lexical unit.

end

protected int end

The end offset of the last lexical unit.

blankCharacters

protected int blankCharacters

The characters to skip to create the string which represents the current token.

Constructor Detail

Scanner

public Scanner(java.io.Reader r)
        throws ParseException

Creates a new Scanner object.

Parameters:

r - The reader to scan.

Scanner

public Scanner(java.io.InputStream is,
               java.lang.String enc)
        throws ParseException

Creates a new Scanner object.

Parameters:

is - The input stream to scan.

enc - The encoding to use to decode the input stream, or null.

Scanner

public Scanner(java.lang.String s)
        throws ParseException

Creates a new Scanner object.

Parameters:

r - The reader to scan.

Method Detail

getLine

public int getLine()

Returns the current line.

getColumn

public int getColumn()

Returns the current column.

getBuffer

public char[] getBuffer()

Returns the buffer used to store the chars.

getStart

public int getStart()

Returns the start offset of the last lexical unit.

getEnd

public int getEnd()

Returns the end offset of the last lexical unit.

clearBuffer

public void clearBuffer()

Clears the buffer.

getType

public int getType()

The current lexical unit type like defined in LexicalUnits.

getStringValue

public java.lang.String getStringValue()

Returns the string representation of the current lexical unit.

scanAtRule

public void scanAtRule()
                throws ParseException

Scans a @rule value. This method assumes that the current lexical unit is a at keyword.

next

public int next()
         throws ParseException

Returns the next token.

endGap

protected int endGap()

Returns the end gap of the current lexical unit.

nextToken

protected void nextToken()
                  throws ParseException

Returns the next token.

string1

protected int string1()
               throws java.io.IOException

Scans a single quoted string.

string2

protected int string2()
               throws java.io.IOException

Scans a double quoted string.

number

protected int number()
              throws java.io.IOException

Scans a number.

dotNumber

protected int dotNumber()
                 throws java.io.IOException

Scans the decimal part of a number.

numberUnit

protected int numberUnit(boolean integer)
                  throws java.io.IOException

Scans the unit of a number.

escape

protected void escape()
               throws java.io.IOException

Scans an escape sequence, if one.

isEqualIgnoreCase

protected static boolean isEqualIgnoreCase(int i,
                                           char c)

Compares the given int with the given character, ignoring case.

nextChar

protected int nextChar()
                throws java.io.IOException

Sets the value of the current char to the next character or -1 if the end of stream has been reached.