CSSParser

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javax.swing.text.html
Class CSSParser

java.lang.Object
  javax.swing.text.html.CSSParser

class CSSParser
extends java.lang.Object

Parses a CSS document. This works by way of a delegate that implements the CSSParserCallback interface. The delegate is notified of the following events: - Import statement: handleImport - Selectors handleSelector. This is invoked for each string. For example if the Reader contained p, bar , a {}, the delegate would be notified 4 times, for 'p,' 'bar' ',' and 'a'. - When a rule starts, startRule - Properties in the rule via the handleProperty. This is invoked one per property/value key, eg font size: foo;, would cause the delegate to be notified once with a value of 'font size'. - Values in the rule via the handleValue, this is notified for the total value. - When a rule ends, endRule

Nested Class Summary

(package private) static interface CSSParser.CSSParserCallback
          Receives all information about the CSS document structure while parsing it.

Field Summary

private static int BRACE_CLOSE
          The close brace.

private static int BRACE_OPEN
          The open brace.

private static int BRACKET_CLOSE
          The close bracket.

private static int BRACKET_OPEN
          The open bracket.

private CSSParser.CSSParserCallback callback
          The call back used to parse.

private static char[] charMapping
          The character mapping in the document.

private boolean didPushChar
          Set to true if one character has been read ahead.

private boolean encounteredRuleSet
          Set to true when the first non @ rule is encountered.

private static int END
          The end of the document.

private static int IDENTIFIER
          The identifier of the rule.

private static int PAREN_CLOSE
          The close parentheses.

private static int PAREN_OPEN
          The open parentheses.

private int pushedChar
          The read ahead character.

private java.io.Reader reader
          Holds the incoming CSS rules.

private boolean readWS
          Set to true if any whitespace is read.

private int stackCount
          Number of valid blocks.

private char[] tokenBuffer
          nextToken() inserts the string here.

private int tokenBufferLength
          Current number of chars in tokenBufferLength.

private java.lang.StringBuffer unitBuffer
          Temporary place to hold identifiers.

private int[] unitStack
          Used to indicate blocks.

Constructor Summary

(package private) CSSParser()
          Constructor

Method Summary

private void append(char c)
          Appends a character to the token buffer.

private void endBlock(int end)
          Called when an end block is encountered )]}

private boolean getIdentifier(char c)
          Gets an identifier, returning true if the length of the string is greater than 0, stopping when c, whitespace, or one of {}()[] is hit.

private boolean getNextStatement()
          Gets the next statement, returning false if the end is reached.

private boolean inBlock()
          Checks if currently in a block.

private int nextToken(char c)
          Fetches the next token.

(package private) void parse(java.io.Reader reader, CSSParser.CSSParserCallback callback, boolean parsingDeclaration)
          Parses the the contents of the reader using the callback.

private void parseAtRule()
          Parses an @ rule, stopping at a matching brace pair, or ;.

private int parseDeclaration()
          Parses a single declaration, which is an identifier a : and another identifier.

private void parseDeclarationBlock()
          Parses a declaration block.

private int parseIdentifiers(char c, boolean wantsBlocks)
          Parses identifiers until c is encountered, returning the ending token, which will be IDENTIFIER if c is found.

private void parseRuleSet()
          Parses the next rule set, which is a selector followed by a declaration block.

private boolean parseSelectors()
          Parses a set of selectors, returning false if the end of the stream is reached.

private void parseTillClosed(int i)
          Parses till a matching block close is encountered.

private void pushChar(int c)
          Supports one character look ahead, this will throw if called twice in a row.

private int readChar()
          Reads a character from the stream.

private void readComment()
          Parses a comment block.

private void readTill(char c)
          Reads till c is encountered, escaping characters as necessary.

private int readWS()
          Skips any white space, returning the character after the white space.

private void startBlock(int start)
          Called when a block start is encountered ({[.

Methods inherited from class java.lang.Object

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

Field Detail

IDENTIFIER

private static final int IDENTIFIER

The identifier of the rule.

See Also:: Constant Field Values

BRACKET_OPEN

private static final int BRACKET_OPEN

The open bracket.

See Also:: Constant Field Values

BRACKET_CLOSE

private static final int BRACKET_CLOSE

The close bracket.

See Also:: Constant Field Values

BRACE_OPEN

private static final int BRACE_OPEN

The open brace.

See Also:: Constant Field Values

BRACE_CLOSE

private static final int BRACE_CLOSE

The close brace.

See Also:: Constant Field Values

PAREN_OPEN

private static final int PAREN_OPEN

The open parentheses.

See Also:: Constant Field Values

PAREN_CLOSE

private static final int PAREN_CLOSE

The close parentheses.

See Also:: Constant Field Values

END

private static final int END

The end of the document.

See Also:: Constant Field Values

charMapping

private static final char[] charMapping

The character mapping in the document.

didPushChar

private boolean didPushChar

Set to true if one character has been read ahead.

pushedChar

private int pushedChar

The read ahead character.

unitBuffer

private java.lang.StringBuffer unitBuffer

Temporary place to hold identifiers.

unitStack

private int[] unitStack

Used to indicate blocks.

stackCount

private int stackCount

Number of valid blocks.

reader

private java.io.Reader reader

Holds the incoming CSS rules.

encounteredRuleSet

private boolean encounteredRuleSet

Set to true when the first non @ rule is encountered.

callback

private CSSParser.CSSParserCallback callback

The call back used to parse.

tokenBuffer

private char[] tokenBuffer

nextToken() inserts the string here.

tokenBufferLength

private int tokenBufferLength

Current number of chars in tokenBufferLength.

readWS

private boolean readWS

Set to true if any whitespace is read.

Constructor Detail

CSSParser

CSSParser()

Constructor

Method Detail

append

private void append(char c)

Appends a character to the token buffer.

nextToken

private int nextToken(char c)
               throws java.io.IOException

Fetches the next token.

readChar

private int readChar()
              throws java.io.IOException

Reads a character from the stream.

parse

void parse(java.io.Reader reader,
           CSSParser.CSSParserCallback callback,
           boolean parsingDeclaration)
     throws java.io.IOException

Parses the the contents of the reader using the callback.

readWS

private int readWS()
            throws java.io.IOException

Skips any white space, returning the character after the white space.

getNextStatement

private boolean getNextStatement()
                          throws java.io.IOException

Gets the next statement, returning false if the end is reached. A statement is either an At-rule, or a ruleset.

parseAtRule

private void parseAtRule()
                  throws java.io.IOException

Parses an @ rule, stopping at a matching brace pair, or ;.

parseRuleSet

private void parseRuleSet()
                   throws java.io.IOException

Parses the next rule set, which is a selector followed by a declaration block.

parseSelectors

private boolean parseSelectors()
                        throws java.io.IOException

Parses a set of selectors, returning false if the end of the stream is reached.

parseDeclarationBlock

private void parseDeclarationBlock()
                            throws java.io.IOException

Parses a declaration block. Which a number of declarations followed by a })].

parseDeclaration

private int parseDeclaration()
                      throws java.io.IOException

Parses a single declaration, which is an identifier a : and another identifier. This returns the last token seen.

parseIdentifiers

private int parseIdentifiers(char c,
                             boolean wantsBlocks)
                      throws java.io.IOException

Parses identifiers until c is encountered, returning the ending token, which will be IDENTIFIER if c is found.

parseTillClosed

private void parseTillClosed(int i)
                      throws java.io.IOException

Parses till a matching block close is encountered. This is only appropriate to be called at the top level (no nesting).

getIdentifier

private boolean getIdentifier(char c)
                       throws java.io.IOException

Gets an identifier, returning true if the length of the string is greater than 0, stopping when c, whitespace, or one of {}()[] is hit.

readTill

private void readTill(char c)
               throws java.io.IOException

Reads till c is encountered, escaping characters as necessary.

readComment

private void readComment()
                  throws java.io.IOException

Parses a comment block.

startBlock

private void startBlock(int start)

Called when a block start is encountered ({[.

endBlock

private void endBlock(int end)

Called when an end block is encountered )]}

inBlock

private boolean inBlock()

Checks if currently in a block.

pushChar

private void pushChar(int c)
               throws java.io.IOException

Supports one character look ahead, this will throw if called twice in a row.

Overview

Package

Class

Use

Deprecated

Index

Home >> All >> javax >> swing >> text >> [ html overview ]

PREV CLASS NEXT CLASS

SUMMARY:

JAVADOC |

SOURCE |

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Nested Class Summary
`(package private) static interface`	`CSSParser.CSSParserCallback` Receives all information about the CSS document structure while parsing it.

Field Summary
`private static int`	`BRACE_CLOSE` The close brace.
`private static int`	`BRACE_OPEN` The open brace.
`private static int`	`BRACKET_CLOSE` The close bracket.
`private static int`	`BRACKET_OPEN` The open bracket.
`private CSSParser.CSSParserCallback`	`callback` The call back used to parse.
`private static char[]`	`charMapping` The character mapping in the document.
`private boolean`	`didPushChar` Set to true if one character has been read ahead.
`private boolean`	`encounteredRuleSet` Set to true when the first non @ rule is encountered.
`private static int`	`END` The end of the document.
`private static int`	`IDENTIFIER` The identifier of the rule.
`private static int`	`PAREN_CLOSE` The close parentheses.
`private static int`	`PAREN_OPEN` The open parentheses.
`private int`	`pushedChar` The read ahead character.
`private java.io.Reader`	`reader` Holds the incoming CSS rules.
`private boolean`	`readWS` Set to true if any whitespace is read.
`private int`	`stackCount` Number of valid blocks.
`private char[]`	`tokenBuffer` nextToken() inserts the string here.
`private int`	`tokenBufferLength` Current number of chars in tokenBufferLength.
`private java.lang.StringBuffer`	`unitBuffer` Temporary place to hold identifiers.
`private int[]`	`unitStack` Used to indicate blocks.

Constructor Summary
`(package private)`	`CSSParser()` Constructor

Method Summary
`private void`	`append(char c)` Appends a character to the token buffer.
`private void`	`endBlock(int end)` Called when an end block is encountered )]}
`private boolean`	`getIdentifier(char c)` Gets an identifier, returning true if the length of the string is greater than 0, stopping when c, whitespace, or one of {}()[] is hit.
`private boolean`	`getNextStatement()` Gets the next statement, returning false if the end is reached.
`private boolean`	`inBlock()` Checks if currently in a block.
`private int`	`nextToken(char c)` Fetches the next token.
`(package private) void`	`parse(java.io.Reader reader, CSSParser.CSSParserCallback callback, boolean parsingDeclaration)` Parses the the contents of the reader using the callback.
`private void`	`parseAtRule()` Parses an @ rule, stopping at a matching brace pair, or ;.
`private int`	`parseDeclaration()` Parses a single declaration, which is an identifier a : and another identifier.
`private void`	`parseDeclarationBlock()` Parses a declaration block.
`private int`	`parseIdentifiers(char c, boolean wantsBlocks)` Parses identifiers until c is encountered, returning the ending token, which will be IDENTIFIER if c is found.
`private void`	`parseRuleSet()` Parses the next rule set, which is a selector followed by a declaration block.
`private boolean`	`parseSelectors()` Parses a set of selectors, returning false if the end of the stream is reached.
`private void`	`parseTillClosed(int i)` Parses till a matching block close is encountered.
`private void`	`pushChar(int c)` Supports one character look ahead, this will throw if called twice in a row.
`private int`	`readChar()` Reads a character from the stream.
`private void`	`readComment()` Parses a comment block.
`private void`	`readTill(char c)` Reads till c is encountered, escaping characters as necessary.
`private int`	`readWS()` Skips any white space, returning the character after the white space.
`private void`	`startBlock(int start)` Called when a block start is encountered ({[.

javax.swing.text.html Class CSSParser

IDENTIFIER

BRACKET_OPEN

BRACKET_CLOSE

BRACE_OPEN

BRACE_CLOSE

PAREN_OPEN

PAREN_CLOSE

END

charMapping

didPushChar

pushedChar

unitBuffer

unitStack

stackCount

reader

encounteredRuleSet

callback

tokenBuffer

tokenBufferLength

readWS

CSSParser

append

nextToken

readChar

parse

readWS

getNextStatement

parseAtRule

parseRuleSet

parseSelectors

parseDeclarationBlock

parseDeclaration

parseIdentifiers

parseTillClosed

getIdentifier

readTill

readComment

startBlock

endBlock

inBlock

pushChar

javax.swing.text.html
Class CSSParser