public class XMLEncodingDetector extends Object
Modifier and Type | Field and Description |
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static int |
DEFAULT_BUFFER_SIZE |
static int |
DEFAULT_XMLDECL_BUFFER_SIZE |
Constructor and Description |
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XMLEncodingDetector()
Constructor
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Modifier and Type | Method and Description |
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static Object[] |
getEncoding(String fname,
JarFile jarFile,
JspCompilationContext ctxt,
ErrorDispatcher err)
Autodetects the encoding of the XML document supplied by the given
input stream.
|
boolean |
isExternal() |
int |
peekChar() |
int |
scanChar() |
boolean |
scanData(String delimiter,
XMLStringBuffer buffer)
Scans a range of character data up to the specified delimiter,
setting the fields of the XMLString structure, appropriately.
|
int |
scanLiteral(int quote,
XMLString content)
Scans a range of attribute value data, setting the fields of the
XMLString structure, appropriately.
|
String |
scanName() |
String |
scanPseudoAttribute(boolean scanningTextDecl,
XMLString value)
Scans a pseudo attribute.
|
boolean |
skipChar(int c)
Skips a character appearing immediately on the input.
|
boolean |
skipSpaces()
Skips space characters appearing immediately on the input.
|
boolean |
skipString(String s)
Skips the specified string appearing immediately on the input.
|
public static final int DEFAULT_BUFFER_SIZE
public static final int DEFAULT_XMLDECL_BUFFER_SIZE
public static Object[] getEncoding(String fname, JarFile jarFile, JspCompilationContext ctxt, ErrorDispatcher err) throws IOException, JasperException
Autodetects the encoding of the XML document supplied by the given input stream.
Encoding autodetection is done according to the XML 1.0 specification, Appendix F.1: Detection Without External Encoding Information.
fname
- file namejarFile
- jar filectxt
- compilation contexterr
- error dispatcherIOException
- in case of IO errorsJasperException
- in case of Jasper errorspublic boolean isExternal()
public int peekChar() throws IOException
Note: The character is not consumed.
IOException
- Thrown if i/o error occurs.public int scanChar() throws IOException
Note: The character is consumed.
IOException
- Thrown if i/o error occurs.public String scanName() throws IOException
Note: The Name characters are consumed.
Note: The string returned must be a symbol. The SymbolTable can be used for this purpose.
IOException
- Thrown if i/o error occurs.SymbolTable
,
XMLChar.isName(int)
,
XMLChar.isNameStart(int)
public int scanLiteral(int quote, XMLString content) throws IOException
Scans a range of attribute value data, setting the fields of the XMLString structure, appropriately.
Note: The characters are consumed.
Note: This method does not guarantee to return the longest run of attribute value data. This method may return before the quote character due to reaching the end of the input buffer or any other reason.
Note: The fields contained in the XMLString structure are not guaranteed to remain valid upon subsequent calls to the entity scanner. Therefore, the caller is responsible for immediately using the returned character data or making a copy of the character data.
quote
- The quote character that signifies the end of the
attribute value data.content
- The content structure to fill.IOException
- Thrown if i/o error occurs.public boolean scanData(String delimiter, XMLStringBuffer buffer) throws IOException
Note: The characters are consumed.
Note: This assumes that the internal buffer is at least the same size, or bigger, than the length of the delimiter and that the delimiter contains at least one character.
Note: This method does not guarantee to return the longest run of character data. This method may return before the delimiter due to reaching the end of the input buffer or any other reason.
Note: The fields contained in the XMLString structure are not guaranteed to remain valid upon subsequent calls to the entity scanner. Therefore, the caller is responsible for immediately using the returned character data or making a copy of the character data.
delimiter
- The string that signifies the end of the character
data to be scanned.buffer
- The data structure to fill.IOException
- Thrown if i/o error occurs.public boolean skipChar(int c) throws IOException
Note: The character is consumed only if it matches the specified character.
c
- The character to skip.IOException
- Thrown if i/o error occurs.public boolean skipSpaces() throws IOException
Note: The characters are consumed only if they are space characters.
IOException
- Thrown if i/o error occurs.EOFException
- Thrown on end of file.XMLChar.isSpace(int)
public boolean skipString(String s) throws IOException
Note: The characters are consumed only if they are space characters.
s
- The string to skip.IOException
- Thrown if i/o error occurs.public String scanPseudoAttribute(boolean scanningTextDecl, XMLString value) throws IOException, JasperException
scanningTextDecl
- True if scanning this pseudo-attribute for a
TextDecl; false if scanning XMLDecl. This
flag is needed to report the correct type of
error.value
- The string to fill in with the attribute
value.Note: This method uses fStringBuffer2, anything in it at the time of calling is lost.
IOException
- in case of IO errorsJasperException
- in case of Jasper errorsCopyright © 2000–2020 Apache Software Foundation. All rights reserved.