org.apache.jasper.compiler
Class JspUtil

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

public class JspUtil

extends java.lang.Object

This class has all the utility method(s). Ideally should move all the bean containers here.

Author:

Mandar Raje., Rajiv Mordani., Danno Ferrin, Pierre Delisle

Nested Class Summary

static class

JspUtil.ValidAttribute

Constructor Summary

JspUtil()

Method Summary

static java.util.Hashtable	attrsToHashtable(org.xml.sax.Attributes attrs)
static boolean	booleanValue(java.lang.String s) Convert a String value to 'boolean'.
static void	checkAttributes(java.lang.String typeOfTag, org.xml.sax.Attributes attrs, JspUtil.ValidAttribute[] validAttributes, Mark start, ErrorDispatcher err)
static java.lang.String	escapeQueryString(java.lang.String unescString)
static char[]	escapeQuotes(char[] chars)
static java.lang.String	escapeXml(java.lang.String s) Escape the 5 entities defined by XML.
static java.lang.String	getCanonicalName(java.lang.Class c) Compute the canonical name from a Class instance.
static java.lang.String	getElementChildTextData(org.w3c.dom.Element e) Get the data for the first child associated with the Element provided as argument.
static java.lang.String	getExpr(java.lang.String expression, boolean isXml)
static java.lang.String	getExprInXml(java.lang.String expression) Takes a potential expression and converts it into XML form
static boolean	isExpression(java.lang.String token, boolean isXml) Checks if the token is a runtime expression.
static org.w3c.dom.Document	parseXMLDoc(java.lang.String uri, java.io.InputStream in) Deprecated. Use ParserUtils.parseXMLDocument() instead
static org.w3c.dom.Document	parseXMLDocJaxp(java.lang.String uri, java.io.InputStream in) Deprecated. Use ParserUtils.parseXMLDocument() instead
static char[]	removeQuotes(char[] chars)
static java.lang.String	replace(java.lang.String name, char replace, java.lang.String with) Replaces any occurrence of replace with with in the given string.

Methods inherited from class java.lang.Object

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

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

parseXMLDoc

public static org.w3c.dom.Document parseXMLDoc(java.lang.String uri,
                                               java.io.InputStream in)
                                        throws JasperException

Deprecated. Use ParserUtils.parseXMLDocument() instead

Parses the XML document contained in the InputStream.

Throws:

JasperException

parseXMLDocJaxp

public static org.w3c.dom.Document parseXMLDocJaxp(java.lang.String uri,
                                                   java.io.InputStream in)
                                            throws JasperException

Deprecated. Use ParserUtils.parseXMLDocument() instead

Parses the XML document contained in the InputStream. This XML document is either web.xml or a tld. [The TLD has to be cached internally (see MyEntityResolver)]

Throws:

JasperException

checkAttributes

public static void checkAttributes(java.lang.String typeOfTag,
                                   org.xml.sax.Attributes attrs,
                                   JspUtil.ValidAttribute[] validAttributes,
                                   Mark start,
                                   ErrorDispatcher err)
                            throws JasperException

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 occurrence of replace with with in the given string.

attrsToHashtable

public static java.util.Hashtable attrsToHashtable(org.xml.sax.Attributes attrs)

getElementChildTextData

public static java.lang.String getElementChildTextData(org.w3c.dom.Element e)

Get the data for the first child associated with the Element provided as argument. It is assumed that this first child is of type Text.

Parameters:

e - the DOM Element to read from

Returns:

the data associated with the first child of the DOM element.

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

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.