Package nu.validator.htmlparser.impl

Class MetaScanner

java.lang.Object
nu.validator.htmlparser.impl.MetaScanner
Direct Known Subclasses:
MetaSniffer
public abstract class MetaScanner extends Object

  • Field Details

    • 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
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    • M

      private static final int M
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    • E

      private static final int E
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    • T

      private static final int T
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    • A

      private static final int A
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    • DATA

      private static final int DATA
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    • TAG_OPEN

      private static final int TAG_OPEN
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    • SCAN_UNTIL_GT

      private static final int SCAN_UNTIL_GT
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    • TAG_NAME

      private static final int TAG_NAME
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    • BEFORE_ATTRIBUTE_NAME

      private static final int BEFORE_ATTRIBUTE_NAME
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    • ATTRIBUTE_NAME

      private static final int ATTRIBUTE_NAME
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    • AFTER_ATTRIBUTE_NAME

      private static final int AFTER_ATTRIBUTE_NAME
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    • BEFORE_ATTRIBUTE_VALUE

      private static final int BEFORE_ATTRIBUTE_VALUE
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    • ATTRIBUTE_VALUE_DOUBLE_QUOTED

      private static final int ATTRIBUTE_VALUE_DOUBLE_QUOTED
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    • ATTRIBUTE_VALUE_SINGLE_QUOTED

      private static final int ATTRIBUTE_VALUE_SINGLE_QUOTED
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    • ATTRIBUTE_VALUE_UNQUOTED

      private static final int ATTRIBUTE_VALUE_UNQUOTED
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    • AFTER_ATTRIBUTE_VALUE_QUOTED

      private static final int AFTER_ATTRIBUTE_VALUE_QUOTED
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    • MARKUP_DECLARATION_OPEN

      private static final int MARKUP_DECLARATION_OPEN
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    • MARKUP_DECLARATION_HYPHEN

      private static final int MARKUP_DECLARATION_HYPHEN
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    • COMMENT_START

      private static final int COMMENT_START
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    • COMMENT_START_DASH

      private static final int COMMENT_START_DASH
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    • COMMENT

      private static final int COMMENT
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    • COMMENT_END_DASH

      private static final int COMMENT_END_DASH
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    • COMMENT_END

      private static final int COMMENT_END
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    • SELF_CLOSING_START_TAG

      private static final int SELF_CLOSING_START_TAG
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    • HTTP_EQUIV_NOT_SEEN

      private static final int HTTP_EQUIV_NOT_SEEN
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    • HTTP_EQUIV_CONTENT_TYPE

      private static final int HTTP_EQUIV_CONTENT_TYPE
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    • HTTP_EQUIV_OTHER

      private static final int HTTP_EQUIV_OTHER
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    • 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 String content

    • charset

      private String charset

    • httpEquivState

      private int httpEquivState

  • Constructor Details

    • MetaScanner

      public MetaScanner()

  • Method Details

    • destructor

      private void destructor()

    • read

      protected int read() throws IOException
      Reads a byte from the data source. -1 means end.
      Returns:
      Throws:
      IOException

    • stateLoop

      protected final void stateLoop(int state) throws SAXException, IOException
      The runs the meta scanning algorithm.
      Throws:
      SAXException
      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 SAXException
      Attempts to extract a charset name from the accumulation buffer.
      Throws:
      SAXException

    • handleTag

      private boolean handleTag() throws SAXException
      Throws:
      SAXException

    • handleTagInner

      private boolean handleTagInner() throws SAXException
      Throws:
      SAXException

    • tryCharset

      protected abstract boolean tryCharset(String encoding) throws SAXException
      Tries to switch to an encoding.
      Parameters:
      encoding -
      Returns:
      true if successful
      Throws:
      SAXException