java.lang.Object
- nu.validator.htmlparser.impl.MetaScanner

Direct Known Subclasses:: MetaSniffer

public abstract class MetaScanner
extends java.lang.Object

Field Summary

Fields
Modifier and Type	Field	Description
`private static int`	`A`
`private static int`	`AFTER_ATTRIBUTE_NAME`
`private static int`	`AFTER_ATTRIBUTE_VALUE_QUOTED`
`private static int`	`ATTRIBUTE_NAME`
`private static int`	`ATTRIBUTE_VALUE_DOUBLE_QUOTED`
`private static int`	`ATTRIBUTE_VALUE_SINGLE_QUOTED`
`private static int`	`ATTRIBUTE_VALUE_UNQUOTED`
`private static int`	`BEFORE_ATTRIBUTE_NAME`
`private static int`	`BEFORE_ATTRIBUTE_VALUE`
`private java.lang.String`	`charset`
`private static char[]`	`CHARSET`	Constant for "charset".
`private int`	`charsetIndex`	The current position in recognizing the attribute name "charset".
`private static int`	`COMMENT`
`private static int`	`COMMENT_END`
`private static int`	`COMMENT_END_DASH`
`private static int`	`COMMENT_START`
`private static int`	`COMMENT_START_DASH`
`private java.lang.String`	`content`
`private static char[]`	`CONTENT`	Constant for "content".
`private static char[]`	`CONTENT_TYPE`	Constant for "content-type".
`private int`	`contentIndex`	The current position in recognizing the attribute name "content".
`private int`	`contentTypeIndex`	The current position in recognizing the attribute value "content-type".
`private static int`	`DATA`
`private static int`	`E`
`private static char[]`	`HTTP_EQUIV`	Constant for "http-equiv".
`private static int`	`HTTP_EQUIV_CONTENT_TYPE`
`private static int`	`HTTP_EQUIV_NOT_SEEN`
`private static int`	`HTTP_EQUIV_OTHER`
`private int`	`httpEquivIndex`	The current position in recognizing the attribute name "http-equive".
`private int`	`httpEquivState`
`private static int`	`M`
`private static int`	`MARKUP_DECLARATION_HYPHEN`
`private static int`	`MARKUP_DECLARATION_OPEN`
`private int`	`metaState`	The state of the state machine that recognizes the tag name "meta".
`private static int`	`NO`
`protected ByteReadable`	`readable`	The data source.
`private static int`	`SCAN_UNTIL_GT`
`private static int`	`SELF_CLOSING_START_TAG`
`protected int`	`stateSave`	The tokenizer state.
`private char[]`	`strBuf`	Accumulation buffer for attribute values.
`private int`	`strBufLen`	The currently filled length of strBuf.
`private static int`	`T`
`private static int`	`TAG_NAME`
`private static int`	`TAG_OPEN`

Constructor Summary

Constructors
Constructor Description

MetaScanner()

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`private void`	`addToBuffer(int c)`	Adds a character to the accumulation buffer.
`private void`	`destructor()`
`private void`	`handleAttributeValue()`	Attempts to extract a charset name from the accumulation buffer.
`private void`	`handleCharInAttributeValue(int c)`
`private boolean`	`handleTag()`
`private boolean`	`handleTagInner()`
`protected int`	`read()`	Reads a byte from the data source.
`protected void`	`stateLoop(int state)`	The runs the meta scanning algorithm.
`private int`	`toAsciiLowerCase(int c)`
`protected abstract boolean`	`tryCharset(java.lang.String encoding)`	Tries to switch to an encoding.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - CHARSET
```
private static final char[] CHARSET
```
    Constant for "charset".
  - CONTENT
```
private static final char[] CONTENT
```
    Constant for "content".
  - HTTP_EQUIV
```
private static final char[] HTTP_EQUIV
```
    Constant for "http-equiv".
  - CONTENT_TYPE
```
private static final char[] CONTENT_TYPE
```
    Constant for "content-type".
  - NO
```
private static final int NO
```
    See Also:
    
    Constant Field Values
  - M
```
private static final int M
```
    See Also:
    
    Constant Field Values
  - E
```
private static final int E
```
    See Also:
    
    Constant Field Values
  - T
```
private static final int T
```
    See Also:
    
    Constant Field Values
  - A
```
private static final int A
```
    See Also:
    
    Constant Field Values
  - DATA
```
private static final int DATA
```
    See Also:
    
    Constant Field Values
  - TAG_OPEN
```
private static final int TAG_OPEN
```
    See Also:
    
    Constant Field Values
  - SCAN_UNTIL_GT
```
private static final int SCAN_UNTIL_GT
```
    See Also:
    
    Constant Field Values
  - TAG_NAME
```
private static final int TAG_NAME
```
    See Also:
    
    Constant Field Values
  - BEFORE_ATTRIBUTE_NAME
```
private static final int BEFORE_ATTRIBUTE_NAME
```
    See Also:
    
    Constant Field Values
  - ATTRIBUTE_NAME
```
private static final int ATTRIBUTE_NAME
```
    See Also:
    
    Constant Field Values
  - AFTER_ATTRIBUTE_NAME
```
private static final int AFTER_ATTRIBUTE_NAME
```
    See Also:
    
    Constant Field Values
  - BEFORE_ATTRIBUTE_VALUE
```
private static final int BEFORE_ATTRIBUTE_VALUE
```
    See Also:
    
    Constant Field Values
  - ATTRIBUTE_VALUE_DOUBLE_QUOTED
```
private static final int ATTRIBUTE_VALUE_DOUBLE_QUOTED
```
    See Also:
    
    Constant Field Values
  - ATTRIBUTE_VALUE_SINGLE_QUOTED
```
private static final int ATTRIBUTE_VALUE_SINGLE_QUOTED
```
    See Also:
    
    Constant Field Values
  - ATTRIBUTE_VALUE_UNQUOTED
```
private static final int ATTRIBUTE_VALUE_UNQUOTED
```
    See Also:
    
    Constant Field Values
  - AFTER_ATTRIBUTE_VALUE_QUOTED
```
private static final int AFTER_ATTRIBUTE_VALUE_QUOTED
```
    See Also:
    
    Constant Field Values
  - MARKUP_DECLARATION_OPEN
```
private static final int MARKUP_DECLARATION_OPEN
```
    See Also:
    
    Constant Field Values
  - MARKUP_DECLARATION_HYPHEN
```
private static final int MARKUP_DECLARATION_HYPHEN
```
    See Also:
    
    Constant Field Values
  - COMMENT_START
```
private static final int COMMENT_START
```
    See Also:
    
    Constant Field Values
  - COMMENT_START_DASH
```
private static final int COMMENT_START_DASH
```
    See Also:
    
    Constant Field Values
  - COMMENT
```
private static final int COMMENT
```
    See Also:
    
    Constant Field Values
  - COMMENT_END_DASH
```
private static final int COMMENT_END_DASH
```
    See Also:
    
    Constant Field Values
  - COMMENT_END
```
private static final int COMMENT_END
```
    See Also:
    
    Constant Field Values
  - SELF_CLOSING_START_TAG
```
private static final int SELF_CLOSING_START_TAG
```
    See Also:
    
    Constant Field Values
  - HTTP_EQUIV_NOT_SEEN
```
private static final int HTTP_EQUIV_NOT_SEEN
```
    See Also:
    
    Constant Field Values
  - HTTP_EQUIV_CONTENT_TYPE
```
private static final int HTTP_EQUIV_CONTENT_TYPE
```
    See Also:
    
    Constant Field Values
  - HTTP_EQUIV_OTHER
```
private static final int HTTP_EQUIV_OTHER
```
    See Also:
    
    Constant Field Values
  - readable
```
protected ByteReadable readable
```
    The data source.
  - metaState
```
private int metaState
```
    The state of the state machine that recognizes the tag name "meta".
  - contentIndex
```
private int contentIndex
```
    The current position in recognizing the attribute name "content".
  - charsetIndex
```
private int charsetIndex
```
    The current position in recognizing the attribute name "charset".
  - httpEquivIndex
```
private int httpEquivIndex
```
    The current position in recognizing the attribute name "http-equive".
  - contentTypeIndex
```
private int contentTypeIndex
```
    The current position in recognizing the attribute value "content-type".
  - stateSave
```
protected int stateSave
```
    The tokenizer state.
  - strBufLen
```
private int strBufLen
```
    The currently filled length of strBuf.
  - strBuf
```
private char[] strBuf
```
    Accumulation buffer for attribute values.
  - content
```
private java.lang.String content
```
  - charset
```
private java.lang.String charset
```
  - httpEquivState
```
private int httpEquivState
```
- Constructor Detail
  - MetaScanner
```
public MetaScanner()
```
- Method Detail
  - destructor
```
private void destructor()
```
  - read
```
protected int read()
            throws java.io.IOException
```
    Reads a byte from the data source. -1 means end.
    
    Returns:
    
    Throws:
    
    java.io.IOException
  - stateLoop
```
protected final void stateLoop(int state)
                        throws org.xml.sax.SAXException,
                               java.io.IOException
```
    The runs the meta scanning algorithm.
    
    Throws:
    
    org.xml.sax.SAXException
    
    java.io.IOException
  - handleCharInAttributeValue
```
private void handleCharInAttributeValue(int c)
```
  - toAsciiLowerCase
```
private int toAsciiLowerCase(int c)
```
  - addToBuffer
```
private void addToBuffer(int c)
```
    Adds a character to the accumulation buffer.
    
    Parameters:
    
    c - the character to add
  - handleAttributeValue
```
private void handleAttributeValue()
                           throws org.xml.sax.SAXException
```
    Attempts to extract a charset name from the accumulation buffer.
    
    Throws:
    
    org.xml.sax.SAXException
  - handleTag
```
private boolean handleTag()
                   throws org.xml.sax.SAXException
```
    Throws:
    
    org.xml.sax.SAXException
  - handleTagInner
```
private boolean handleTagInner()
                        throws org.xml.sax.SAXException
```
    Throws:
    
    org.xml.sax.SAXException
  - tryCharset
```
protected abstract boolean tryCharset(java.lang.String encoding)
                               throws org.xml.sax.SAXException
```
    Tries to switch to an encoding.
    
    Parameters:
    
    encoding -
    
    Returns:
    
    true if successful
    
    Throws:
    
    org.xml.sax.SAXException

Class MetaScanner

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

CHARSET

CONTENT

HTTP_EQUIV

CONTENT_TYPE

NO

M

E

T

A

DATA

TAG_OPEN

SCAN_UNTIL_GT

TAG_NAME

BEFORE_ATTRIBUTE_NAME

ATTRIBUTE_NAME

AFTER_ATTRIBUTE_NAME

BEFORE_ATTRIBUTE_VALUE

ATTRIBUTE_VALUE_DOUBLE_QUOTED

ATTRIBUTE_VALUE_SINGLE_QUOTED

ATTRIBUTE_VALUE_UNQUOTED

AFTER_ATTRIBUTE_VALUE_QUOTED

MARKUP_DECLARATION_OPEN

MARKUP_DECLARATION_HYPHEN

COMMENT_START

COMMENT_START_DASH

COMMENT

COMMENT_END_DASH

COMMENT_END

SELF_CLOSING_START_TAG

HTTP_EQUIV_NOT_SEEN

HTTP_EQUIV_CONTENT_TYPE

HTTP_EQUIV_OTHER

readable

metaState

contentIndex

charsetIndex

httpEquivIndex

contentTypeIndex

stateSave

strBufLen

strBuf

content

charset

httpEquivState

Constructor Detail

MetaScanner

Method Detail

destructor

read

stateLoop

handleCharInAttributeValue

toAsciiLowerCase

addToBuffer

handleAttributeValue

handleTag

handleTagInner

tryCharset