JspReader (Jasper Internal API Documentation)

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## org.apache.jasper.compiler
Class JspReader

    java.lang.Object
      org.apache.jasper.compiler.JspReader

public class JspReader
extends java.lang.Object

JspReader is an input buffer for the JSP parser. It should allow unlimited lookahead and pushback. It also has a bunch of parsing utility methods for understanding htmlesque thingies.

Author:
  Anil K. Vijendran, Anselm Baird-Smith, Harish Prabandham, Rajiv Mordani, Mandar Raje, Danno Ferrin

Field Summary
`protected Mark` | `current`

Constructor Summary
`protected` | `JspReader(JspCompilationContext ctx, java.lang.String file, java.lang.String encoding, java.io.InputStreamReader reader, ErrorDispatcher err)`

Method Summary
`void` | `advance(int n)`
`java.lang.String` | `getFile(int fileid)`
`boolean` | `hasMoreInput()`
`Mark` | `mark()`
`boolean` | `matches(java.lang.String string)` search the stream for a match to a string
`boolean` | `matchesETag(java.lang.String tagName)`
`boolean` | `matchesIgnoreCase(java.lang.String string)`
`int` | `nextChar()`
`java.lang.String` | `parseToken(boolean quoted)` Parse a space delimited token.
`int` | `peekChar()`
`boolean` | `popFile()`
`protected int` | `registerSourceFile(java.lang.String file)` Register a new source file.
`void` | `reset(Mark mark)`
`void` | `setSingleFile(boolean val)`
`int` | `skipSpaces()`
`Mark` | `skipUntil(java.lang.String limit)` Skip until the given string is matched in the stream.
`Mark` | `skipUntilETag(java.lang.String tag)` Skip until the given end tag is matched in the stream.
`Mark` | `skipUntilIgnoreEsc(java.lang.String limit)` Skip until the given string is matched in the stream, but ignoring chars initially escaped by a '\'.
`protected int` | `unregisterSourceFile(java.lang.String file)` Unregister the source file.

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

Field Detail

### current

    protected Mark current

Constructor Detail

### JspReader

    protected JspReader(JspCompilationContext ctx,
                        java.lang.String file,
                        java.lang.String encoding,
                        java.io.InputStreamReader reader,
                        ErrorDispatcher err)
                 throws JasperException,
                        java.io.FileNotFoundException

Method Detail

### getFile

    public java.lang.String getFile(int fileid)

### registerSourceFile

    protected int registerSourceFile(java.lang.String file)

  Register a new source file. This method is used to implement file inclusion. Each included file gets a uniq identifier (which is the index in the array of source files).

  Returns:
    The index of the now registered file.

### unregisterSourceFile

    protected int unregisterSourceFile(java.lang.String file)

  Unregister the source file. This method is used to implement file inclusion. Each included file gets a uniq identifier (which is the index in the array of source files).

  Returns:
    The index of the now registered file.

### popFile

    public boolean popFile()
                    throws JasperException

  Throws:
    `JasperException`

### hasMoreInput

    public boolean hasMoreInput()
                         throws JasperException

  Throws:
    `JasperException`

### nextChar

    public int nextChar()
                 throws JasperException

  Throws:
    `JasperException`

### peekChar

    public int peekChar()

### mark

    public Mark mark()

### reset

    public void reset(Mark mark)

### matchesIgnoreCase

    public boolean matchesIgnoreCase(java.lang.String string)
                              throws JasperException

  Throws:
    `JasperException`

### matches

    public boolean matches(java.lang.String string)
                    throws JasperException

  search the stream for a match to a string

  Parameters:
    `string` - The string to match
  Returns:
    true is one is found, the current position in stream is positioned after the search string, false otherwise, position in stream unchanged.
  Throws:
    `JasperException`

### matchesETag

    public boolean matchesETag(java.lang.String tagName)
                        throws JasperException

  Throws:
    `JasperException`

### advance

    public void advance(int n)
                 throws JasperException

  Throws:
    `JasperException`

### skipSpaces

    public int skipSpaces()
                   throws JasperException

  Throws:
    `JasperException`

### skipUntil

    public Mark skipUntil(java.lang.String limit)
                   throws JasperException

  Skip until the given string is matched in the stream. When returned, the context is positioned past the end of the match.

  Parameters:
    `limit` - The String to match.
  Returns:
    A non-null `Mark` instance (positioned immediately before the search string) if found, null otherwise.
  Throws:
    `JasperException`

### skipUntilIgnoreEsc

    public Mark skipUntilIgnoreEsc(java.lang.String limit)
                            throws JasperException

  Skip until the given string is matched in the stream, but ignoring chars initially escaped by a '\'. When returned, the context is positioned past the end of the match.

  Parameters:
    `limit` - The String to match.
  Returns:
    A non-null `Mark` instance (positioned immediately before the search string) if found, null otherwise.
  Throws:
    `JasperException`

### skipUntilETag

    public Mark skipUntilETag(java.lang.String tag)
                       throws JasperException

  Skip until the given end tag is matched in the stream. When returned, the context is positioned past the end of the tag.

  Parameters:
    `tag` - The name of the tag whose ETag () to match.
  Returns:
    A non-null `Mark` instance (positioned immediately before the ETag) if found, null otherwise.
  Throws:
    `JasperException`

### parseToken

    public java.lang.String parseToken(boolean quoted)
                                throws JasperException

  Parse a space delimited token. If quoted the token will consume all characters up to a matching quote, otherwise, it consumes up to the first delimiter character.

  Parameters:
    `quoted` - If true accept quoted strings.
  Throws:
    `JasperException`

### setSingleFile

    public void setSingleFile(boolean val)

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