Module io.github.mmm.scanner
Package io.github.mmm.scanner

Class CharScannerSyntaxBean

java.lang.Object
io.github.mmm.scanner.CharScannerSyntaxBean
All Implemented Interfaces:
CharScannerSyntax
public class CharScannerSyntaxBean extends Object implements CharScannerSyntax
This is the implementation of CharScannerSyntax as Java bean.
The actual chars like escape are realized as simple bean-properties and initialized with '\0' so they are disabled by default.
See Also:

  • Constructor Details

    • CharScannerSyntaxBean

      public CharScannerSyntaxBean()
      The constructor.

  • Method Details

    • getEscape

      public int getEscape()
      Description copied from interface: CharScannerSyntax
      This method gets the character used as escape. It is used to mark special characters like CharScannerSyntax.getQuoteStart() to allow these characters also in the payload. The escape itself is removed on decoding while the next character is taken as is without any special interpretation.
      The most common escape character is the backslash (\).
      Here are some examples for decoding:
      escape input output
      \ a\b\\c ab\c
      ~ a~b~~~c ab~c
      This allows to encode special characters like a stop-character, quote-start, alt-quote-start, as well as the escape itself.
      ATTENTION:
      The escape is disabled within quotations.
      Specified by:
      getEscape in interface CharScannerSyntax
      Returns:
      the escape character or '\0' for no escaping.
      See Also:

    • setEscape

      public void setEscape(int escape)
      Parameters:
      escape - is the escape to set.

    • getQuoteStart

      public int getQuoteStart()
      Description copied from interface: CharScannerSyntax
      This method gets the character used to start a quotation that should be terminated by a quote-end character. The text inside the quote is taken as is (without the quote characters).
      Common examples for quote characters are the single quotes (') and double quotes (").
      Specified by:
      getQuoteStart in interface CharScannerSyntax
      Returns:
      the character used to start a quotation or '\0' to disable.

    • setQuoteStart

      public void setQuoteStart(int quoteStart)
      Parameters:
      quoteStart - is the quoteStart to set.

    • getQuoteEnd

      public int getQuoteEnd()
      Description copied from interface: CharScannerSyntax
      This method gets the character used to end a quotation.
      Specified by:
      getQuoteEnd in interface CharScannerSyntax
      Returns:
      the character used to end a quotation or '\0' to disable.
      See Also:

    • setQuoteEnd

      public void setQuoteEnd(int quoteEnd)
      Parameters:
      quoteEnd - is the quoteEnd to set.

    • setQuote

      public void setQuote(int quote)
      This method sets both the quote-start and quote-end character.
      Parameters:
      quote - the quote character to set.

    • getQuoteEscape

      public int getQuoteEscape()
      Description copied from interface: CharScannerSyntax
      This method gets the character used to escape the quote-end character within a quotation. This may be the quote-end itself so a duplicate quote-end represents a single occurrence of that character within a quotation. Otherwise the escape may be any other character.
      Please note that this escaping is only active within a quotation opened by quote-start and only escapes the quote-end character and nothing else so in any other case the quote-escape is treated as a regular character.
      quote-start quote-end quote-escape input output
      ' ' ' a'bc'd abcd
      ' ' ' a'b''c'd ab'cd
      ' ' \ a'b\c\'d\\'e'f ab\c'd\'ef
      Specified by:
      getQuoteEscape in interface CharScannerSyntax
      Returns:
      the character used to escape the quote-end character or '\0' to disable.

    • setQuoteEscape

      public void setQuoteEscape(int quoteEscape)
      Parameters:
      quoteEscape - is the quote-escape to set.

    • isQuoteEscapeLazy

      public boolean isQuoteEscapeLazy()
      Description copied from interface: CharScannerSyntax
      If quote-start, quote-end and quote-escape all point to the same character (which is NOT '\0'), then this method determines if quotation escaping is lazy. This means that outside a quotation a double occurrence of the quote character is NOT treated as quotation but as escaped quote character. Otherwise if NOT lazy, the double quote character is treated as quotation representing the empty sequence.
      Here are some examples:
      quote-start quote-end quote-escape quote-escape-lazy input output
      ' ' ' true '' '
      ' ' ' false ''  
      ' ' ' true '''' ''
      ' ' ' false '''' '
      ' ' ' true '''a' 'a
      ' ' ' false '''a' 'a

      Please note that for '''a' the complete sequence is treated as quote if quote-escape-lazy is false and otherwise just the trailing 'a'.
      Specified by:
      isQuoteEscapeLazy in interface CharScannerSyntax
      Returns:
      true if quote-escaping is lazy, false otherwise.

    • setQuoteEscapeLazy

      public void setQuoteEscapeLazy(boolean quoteEscapeLazy)
      Parameters:
      quoteEscapeLazy - the quote-escape-lazy flag to set

    • getAltQuoteStart

      public int getAltQuoteStart()
      Description copied from interface: CharScannerSyntax
      This method gets the alternative character used to start a quotation that should be terminated by a alt-quote-end character. The text inside the quote is taken as is (without the quote characters).
      Specified by:
      getAltQuoteStart in interface CharScannerSyntax
      Returns:
      the alternative character used to start a quotation or '\0' to disable.
      See Also:

    • setAltQuoteStart

      public void setAltQuoteStart(int alternativeQuoteStart)
      Parameters:
      alternativeQuoteStart - is the alt-quote-start character to set.

    • getAltQuoteEnd

      public int getAltQuoteEnd()
      Description copied from interface: CharScannerSyntax
      This method gets the alternative character used to end a quotation.
      Specified by:
      getAltQuoteEnd in interface CharScannerSyntax
      Returns:
      the alternative character used to end a quotation.
      See Also:

    • setAltQuoteEnd

      public void setAltQuoteEnd(int alternativeQuoteEnd)
      This method sets the alt-quote-end character.
      Parameters:
      alternativeQuoteEnd - is the alt-quote-end character.

    • setAltQuote

      public void setAltQuote(int altQuote)
      This method sets both the alt-quote-start and alt-quote-end character.
      Parameters:
      altQuote - the alt-quote character to set.

    • getAltQuoteEscape

      public int getAltQuoteEscape()
      Description copied from interface: CharScannerSyntax
      This method gets the character used to escape the alt-quote-end character within an quotation opened by alt-quote-start.
      Specified by:
      getAltQuoteEscape in interface CharScannerSyntax
      Returns:
      the character used to escape the quote-end character or '\0' to disable.
      See Also:

    • setAltQuoteEscape

      public void setAltQuoteEscape(int altQuoteEscape)
      Parameters:
      altQuoteEscape - is the alt-quote-escape to set.

    • isAltQuoteEscapeLazy

      public boolean isAltQuoteEscapeLazy()
      Description copied from interface: CharScannerSyntax
      If alt-quote-start, alt-quote-end and alt-quote-escape all point to the same character (which is NOT '\0'), then this method determines if alt-quotation escaping is lazy.
      Specified by:
      isAltQuoteEscapeLazy in interface CharScannerSyntax
      Returns:
      true if alt-quote-escaping is lazy, false otherwise.
      See Also:

    • setAltQuoteEscapeLazy

      public void setAltQuoteEscapeLazy(boolean altQuoteEscapeLazy)
      Parameters:
      altQuoteEscapeLazy - the alt-quote-lazy flag to set

    • getEntityStart

      public int getEntityStart()
      Description copied from interface: CharScannerSyntax
      This method gets the character used to start an entity. An entity is a specific encoded string surrounded with entity-start and entity-end. It will be decoded by CharScannerSyntax.resolveEntity(String).
      Specified by:
      getEntityStart in interface CharScannerSyntax
      Returns:
      the character used to start an entity or '\0' to disable.

    • setEntityStart

      public void setEntityStart(int entityStart)
      Parameters:
      entityStart - the entity-start to set.

    • getEntityEnd

      public int getEntityEnd()
      Description copied from interface: CharScannerSyntax
      This method gets the character used to end an entity.
      Specified by:
      getEntityEnd in interface CharScannerSyntax
      Returns:
      the character used to end an entity.
      See Also:

    • setEntityEnd

      public void setEntityEnd(int entityEnd)
      Parameters:
      entityEnd - the entity-end to set.

    • resolveEntity

      public String resolveEntity(String entity)
      This method resolves the given entity.
      E.g. if entity-start is '&' and CharScannerSyntax.getEntityEnd() is ';' then if the string "&lt;" is scanned, this method is called with "lt" as entity argument and may return "<".
      ATTENTION:
      You need to override this method if you want to use entities.
      Specified by:
      resolveEntity in interface CharScannerSyntax
      Parameters:
      entity - is the entity string that was found surrounded by entity-start and entity-end excluding these characters.
      Returns:
      the decoded entity.