Field Detail

• CHUNKSIZE

  public static final int CHUNKSIZE

  See Also:

  Constant Field Values

Constructor Detail

• JspUtil

  public JspUtil()

Method Detail

• removeQuotes

  public static char[] removeQuotes(char[] chars)

• escapeQuotes

  public static char[] escapeQuotes(char[] chars)

• isExpression

  public static boolean isExpression(java.lang.String token,
                                     boolean isXml)

  Checks if the token is a runtime expression. In standard JSP syntax, a runtime expression starts with '<%' and ends with '%>'. When the JSP document is in XML syntax, a runtime expression starts with '%=' and ends with '%'.

  Parameters:

  token - The token to be checked return whether the token is a runtime expression or not.

• getExpr

  public static java.lang.String getExpr(java.lang.String expression,
                                         boolean isXml)

  Returns:

  the "expression" part of a runtime expression, taking the delimiters out.

• getExprInXml

  public static java.lang.String getExprInXml(java.lang.String expression)

  Takes a potential expression and converts it into XML form

• checkScope

  public static void checkScope(java.lang.String scope,
                                org.apache.jasper.compiler.Node n,
                                ErrorDispatcher err)
                         throws JasperException

  Checks to see if the given scope is valid.

  Parameters:

  scope - The scope to be checked

  n - The Node containing the 'scope' attribute whose value is to be checked

  err - error dispatcher

  Throws:

  JasperException - if scope is not null and different from "page", "request", "session", and "application"

• checkAttributes

  public static void checkAttributes(java.lang.String typeOfTag,
                                     org.apache.jasper.compiler.Node n,
                                     JspUtil.ValidAttribute[] validAttributes,
                                     ErrorDispatcher err)
                              throws JasperException

  Checks if all mandatory attributes are present and if all attributes present have valid names. Checks attributes specified as XML-style attributes as well as attributes specified using the jsp:attribute standard action.

  Throws:

  JasperException

• escapeQueryString

  public static java.lang.String escapeQueryString(java.lang.String unescString)

• escapeXml

  public static java.lang.String escapeXml(java.lang.String s)

  Escape the 5 entities defined by XML.

• replace

  public static java.lang.String replace(java.lang.String name,
                                         char replace,
                                         java.lang.String with)

  Replaces any occurrences of the character replace with the string with.

• booleanValue

  public static boolean booleanValue(java.lang.String s)

  Convert a String value to 'boolean'. Besides the standard conversions done by Boolean.valueOf(s).booleanValue(), the value "yes" (ignore case) is also converted to 'true'. If 's' is null, then 'false' is returned.

  Parameters:

  s - the string to be converted

  Returns:

  the boolean value associated with the string s

• toClass

  public static java.lang.Class<?> toClass(java.lang.String type,
                                           java.lang.ClassLoader loader)
                                    throws java.lang.ClassNotFoundException

  Returns the Class object associated with the class or interface with the given string name.

  The Class object is determined by passing the given string name to the Class.forName() method, unless the given string name represents a primitive type, in which case it is converted to a Class object by appending ".class" to it (e.g., "int.class").

  Throws:

  java.lang.ClassNotFoundException

• interpreterCall

  public static java.lang.String interpreterCall(boolean isTagFile,
                                                 java.lang.String expression,
                                                 java.lang.Class expectedType,
                                                 java.lang.String fnmapvar,
                                                 java.lang.String expectedDeferredType,
                                                 java.lang.String expectedReturnType,
                                                 java.lang.String[] expectedParamTypes)

  Produces a String representing a call to the EL interpreter.

  Parameters:

  expression - a String containing zero or more "${}" expressions

  expectedType - the expected type of the interpreted result

  fnmapvar - Variable pointing to a function map.

  Returns:

  a String representing a call to the EL interpreter.

• validateExpressions

  public static void validateExpressions(org.apache.jasper.compiler.Mark where,
                                         java.lang.String expressions,
                                         FunctionMapper functionMapper,
                                         ErrorDispatcher err)
                                  throws JasperException

  Validates the syntax of all EL expressions within the given string.

  Parameters:

  where - the approximate location of the expressions in the JSP page

  expressions - a string containing an EL expressions

  err - an error dispatcher to use

  Throws:

  JasperException

• coerce

  public static java.lang.Object coerce(java.lang.Class targetType,
                                        java.lang.String value)
                                 throws ELException

  Throws:

  ELException

• resetTemporaryVariableName

  public static void resetTemporaryVariableName()

  Resets the temporary variable name. (not thread-safe)

• nextTemporaryVariableName

  public static java.lang.String nextTemporaryVariableName()

  Generates a new temporary variable name. (not thread-safe)

• coerceToPrimitiveBoolean

  public static java.lang.String coerceToPrimitiveBoolean(java.lang.String s,
                                                          boolean isNamedAttribute)

• coerceToBoolean

  public static java.lang.String coerceToBoolean(java.lang.String s,
                                                 boolean isNamedAttribute)

• coerceToPrimitiveByte

  public static java.lang.String coerceToPrimitiveByte(java.lang.String s,
                                                       boolean isNamedAttribute)

• coerceToByte

  public static java.lang.String coerceToByte(java.lang.String s,
                                              boolean isNamedAttribute)

• coerceToChar

  public static java.lang.String coerceToChar(java.lang.String s,
                                              boolean isNamedAttribute)

• coerceToCharacter

  public static java.lang.String coerceToCharacter(java.lang.String s,
                                                   boolean isNamedAttribute)

• coerceToPrimitiveDouble

  public static java.lang.String coerceToPrimitiveDouble(java.lang.String s,
                                                         boolean isNamedAttribute)

• coerceToDouble

  public static java.lang.String coerceToDouble(java.lang.String s,
                                                boolean isNamedAttribute)

• coerceToPrimitiveFloat

  public static java.lang.String coerceToPrimitiveFloat(java.lang.String s,
                                                        boolean isNamedAttribute)

• coerceToFloat

  public static java.lang.String coerceToFloat(java.lang.String s,
                                               boolean isNamedAttribute)

• coerceToInt

  public static java.lang.String coerceToInt(java.lang.String s,
                                             boolean isNamedAttribute)

• coerceToInteger

  public static java.lang.String coerceToInteger(java.lang.String s,
                                                 boolean isNamedAttribute)

• coerceToPrimitiveShort

  public static java.lang.String coerceToPrimitiveShort(java.lang.String s,
                                                        boolean isNamedAttribute)

• coerceToShort

  public static java.lang.String coerceToShort(java.lang.String s,
                                               boolean isNamedAttribute)

• coerceToPrimitiveLong

  public static java.lang.String coerceToPrimitiveLong(java.lang.String s,
                                                       boolean isNamedAttribute)

• coerceToLong

  public static java.lang.String coerceToLong(java.lang.String s,
                                              boolean isNamedAttribute)

• coerceToEnum

  public static java.lang.String coerceToEnum(java.lang.String s,
                                              java.lang.String enumClass,
                                              boolean isNamedAttribute)

• getInputStream

  public static java.io.InputStream getInputStream(java.lang.String fname,
                                                   java.util.jar.JarFile jarFile,
                                                   JspCompilationContext ctxt,
                                                   ErrorDispatcher err)
                                            throws JasperException,
                                                   java.io.IOException

  Throws:

  JasperException

  java.io.IOException

• getTagHandlerClassName

  public static java.lang.String getTagHandlerClassName(java.lang.String path,
                                                        ErrorDispatcher err)
                                                 throws JasperException

  Gets the fully-qualified class name of the tag handler corresponding to the given tag file path.

  Parameters:

  path - Tag file path

  err - Error dispatcher

  Returns:

  Fully-qualified class name of the tag handler corresponding to the given tag file path

  Throws:

  JasperException

• makeJavaPackage

  public static final java.lang.String makeJavaPackage(java.lang.String path)

  Converts the given path to a Java package or fully-qualified class name

  Parameters:

  path - Path to convert

  Returns:

  Java package corresponding to the given path

• makeJavaIdentifier

  public static final java.lang.String makeJavaIdentifier(java.lang.String identifier)

  Converts the given identifier to a legal Java identifier

  Parameters:

  identifier - Identifier to convert

  Returns:

  Legal Java identifier corresponding to the given identifier

• mangleChar

  public static final java.lang.String mangleChar(char ch)

  Mangle the specified character to create a legal Java class name.

• isJavaKeyword

  public static boolean isJavaKeyword(java.lang.String key)

  Test whether the argument is a Java keyword

• makeXmlJavaIdentifier

  public static final java.lang.String makeXmlJavaIdentifier(java.lang.String name)

  Converts the given Xml name to a legal Java identifier. This is slightly more efficient than makeJavaIdentifier in that we only need to worry about '.', '-', and ':' in the string. We also assume that the resultant string is further concatenated with some prefix string so that we don't have to worry about it being a Java key word.

  Parameters:

  name - Identifier to convert

  Returns:

  Legal Java identifier corresponding to the given identifier

• toJavaSourceType

  public static java.lang.String toJavaSourceType(java.lang.String type)

  Class.getName() return arrays in the form "[[[", where et, the element type can be one of ZBCDFIJS or L; It is converted into forms that can be understood by javac.

• getCanonicalName

  public static java.lang.String getCanonicalName(java.lang.Class c)

  Compute the canonical name from a Class instance. Note that a simple replacment of '$' with '.' of a binary name would not work, as '$' is a legal Java Identifier character.

  Parameters:

  c - A instance of java.lang.Class

  Returns:

  The canonical name of c.

• expandClassPath

  public static java.util.List<java.lang.String> expandClassPath(java.util.List<java.lang.String> files)

  Given a list of jar files, their manifest attribute Class-path are scanned, and jars specified there are added to the list. This is carried out recursively. Note: This is needed to work around the JDK bug 6725230.