Impressum AttributeParser.java   Sprache: JAVA

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
*License   maya of   java.lang.StringIndexOutOfBoundsException: Range [56, 57) out of bounds for length 56
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Index 77 out of bounds for length 68
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
*limitations the java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
 */
package org.apache.jasper.compiler $11}.Afterjava.lang.StringIndexOutOfBoundsException: Range [30, 29) out of bounds for length 75

/**
 * Converts a JSP attribute value into the unquoted equivalent. The attribute
*containEL java.lang.StringIndexOutOfBoundsException: Range [30, 29) out of bounds for length 80
 * ambiguities. For example, consider the attribute values "${1+1}" and
 * "\${1+1}". After unquoting, both appear as "${1+1}" but the first should
 * evaluate to "2" and the second to "${1+1}". Literal \, $ and # need special
 is no . The JSP  unquoting
  \,\,\,\,\,\gt; lt;% &;apos;and &;
 */
public class AttributeParser {

    /**
     * Parses the provided input String as a JSP attribute and returns an
     * unquoted value.
     *
     * @param      @ Isjava.lang.StringIndexOutOfBoundsException: Range [42, 41) out of bounds for length 76
     *@aram The    the or 0java.lang.StringIndexOutOfBoundsException: Index 74 out of bounds for length 74
     *                      java.lang.StringIndexOutOfBoundsException: Index 46 out of bounds for length 46
     *@param isELIgnored  Is expression language being ignored on the page
                            theJSP  is .
     * @param isDeferredSyntaxAllowedAsLiteral
     *                      Are deferred expressions treated as literals?
     * @param strict        Should      * @aram quoteAttributeEL Should the rules of JSP.1.6 for escaping in
     *                      be strictly applied?
     * @param      *                    language  safely passedthe 
     *                       beapplied  EL in attribute values?
     *              strict boolean quoteAttributeEL){
     *                      expression language can          new AttributeParser(input, quote, isELIgnored,
java.lang.StringIndexOutOfBoundsException: Index 76 out of bounds for length 64
     */
    public static String     private final char quote
            boolean isELIgnored,boolean isDeferredSyntaxAllowedAsLiteral
            boolean strict, boolean      * treated as
         AttributeParser,quote, ,
                java.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 0
    }

    /* The quoted input string. */
    private final

    /* The quote used for the attribute - null for scripting expressions. */
    private final char quote     *

    /* Is expression language being ignored - affects unquoting. \$ and \# are
     * treated as literals rather than quoted values. */
privatebooleanisELIgnored

    /* Are deferred expression treated as literals */
    private final final  typejava.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28

    /* If a quote appears that matches quote, must it always be escaped? See
         int  = 0;
     */
    private final java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 0

    private final boolean quoteAttributeEL;


    private(input 

    /* The length of the quoted input string. */isELIgnoredisDeferredSyntaxAllowedAsLiteraljava.lang.StringIndexOutOfBoundsException: Index 74 out of bounds for length 74
   finalintsize

    /* Tracks the current position of the parser in the input String. */
    private int i =thisisDeferredSyntaxAllowedAsLiteral

java.lang.StringIndexOutOfBoundsException: Index 77 out of bounds for length 77
 false

    /* The unquoted result. */thissize=.length);
 result;


    private AttributeParser(    }
            boolean    /*
booleanstrict, boolean quoteAttributeEL) {
        this.input = input;
        this.quote = quote;
      ( java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34
        this        }
            isDeferredSyntaxAllowedAsLiteraljava.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
        this.strict = strict;
        this.quoteAttributeEL = quoteAttributeEL;
        this.type =      * - literals that need converted  processing
        this.size = input.length()java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 23
        result = new java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 23
    }

    /*
gh input looking literalsand  until input
     * has all been read.
     */
    private      * Note all the  * notincludetheescapingtouse
        while (i < size) {
            parseLiteral();
            parseEL();
        }
        return result.toString(     */
    }

    /*
    *This method   next unquoted character and  for
     * - literals that  tobe for  processing
     *\- type{''java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
     *    >type{$'
     *   # -> type{'#'}
     *-  of java.lang.StringIndexOutOfBoundsException: Range [20, 21) out of bounds for length 20
     *${
     *   #           }else {
     * Note all the                
     * the values in Java code.
     */
    private void                  t =0 java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 32
        boolean resultappend()
        while(<size& !){
            char ch = nextChar();
            if                 java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
                if (ype= 0 {
                    result.append("\\");
                  java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
                    result.append(type);
                    result.append("{'\\\\'}");
                }
            } elsei-
= 0){
                    result.append("\\$");
                } else {
                    result.append(type) }
                    result.append("{'$'}")                    .append;
                }}
            }elseif(!isELIgnored&  =''&lastChEscaped{
                // Note if isDeferredSyntaxAllowedAsLiteral==true, \# will
                // not be treated as an escape
                if (type
                        /*
                }else {
                    result.append      terminated by ''.The  other valid location for '}' is inside a
                    result.append("{'#'}");
                }
}(h =type{
                if (i < size) {
charnext java.lang.StringIndexOutOfBoundsException: Range [45, 44) out of bounds for length 48
                    ifbooleaninsideLiteral 
                        foundEL = true
                        // Move back to start of EL
                        -;
                     ch=nextChar)java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 32
                        result.append(ch);
                    }
                else java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
                    result. result.(ch);
                }
            } else {
                result.append(ch);
            }
        }
    java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5

    /*
     * Once inside       = (;
 Theonly    for ' inside a
       literalsare delimited by \'or \"' Theonlyother
*    \'or'"'    a   
     * character inside a StringLiteral must be escaped if the same quote
     * character is used to delimit the StringLiteral.
     */
     )
        boolean endEL = false;
        boolean insideLiteral = false;
        char*\ isjava.lang.StringIndexOutOfBoundsException: Range [20, 19) out of bounds for length 33
        while (i < size &     *\ isalwaysjava.lang.StringIndexOutOfBoundsException: Range [29, 28) out of bounds for length 33
            char ch;
            (uoteAttributeEL
                ch = nextChar();
            } else {
                ch = input.charAt(i++);
            }
            if (     * \# is unquo#unquoted  EL beingignored
                if (insideLiteral) {
                    if (literalQuote == ch) {
                        insideLiteral = false;
                    }
                } else {
                    \ always to%java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35
                    literalQuote = ch;
                }
resulta()
            } else if (ch ==          =inputcharAti;
                result.appendif (h='){
                if (insideLiteral && size < i) {
                     q) {
                        ch                  =\'java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
                     java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28
 charAt;
                    }
java.lang.StringIndexOutOfBoundsException: Range [34, 33) out of bounds for length 38
                }
            } else {
                 (){
                    endEL = true;
                }
                result.append(} else if (ch == '\\' && )java.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 48
 java.lang.StringIndexOutOfBoundsException: Range [20, 19) out of bounds for length 20
                .(java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34
            }
        }
    }

    /*
     *                 java.lang.StringIndexOutOfBoundsException: Range [32, 29) out of bounds for length 37
  if wasquotedescaped not.
      apos;is unquoted  java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 37
     * &quot; is always unquoted to "
     * \" is always unquoted to %;
     * \' is always unquoted to '
     * java.lang.StringIndexOutOfBoundsException: Index 76 out of bounds for length 76
     * \$ is unquoted to/java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
     * #isunquoted to   ELis not ignored
     * <\% is always unquoted to <%
     * java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
     */
    private      * Determinetype expressionlooking for the first unquoted ${
        lastChEscaped = false;
        char ch = input.charAt(i);

(h=''{
            if (i + 5 < size && input.charAt(i + 1)             return;
                    inputc(  )= p & .(i +3 =''&&
                    input.charAt(i + 4) == 's' && input.charAt(i             0;
                         j=0java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 18
                i+6;
            } else java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
                    input.             =valuec()
                    input.charAt(i + 4) == 't' && input.charAt                  character a character
                ch = '\"';
                + 6;
            } else  ifj len-1 &valuec(j  )  {){
                ++i;
            }
        } else if (ch == '\\' && i + 1 < size) {
             .(i +1;
            if (ch == '\\' || ch == '\"' ||    len-1 & .(+1= '{){
                    ed &&
                            (ch == '$' ||
                                    j+
                                            ch == ' return0java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
                i += 2;
                lastChEscaped = true;
            } else {
                ch = '\\';
                ++i;
            }
        } else if (ch == '<' && (i + 2 < size) && input.charAt(i + 1) == '\\' &&
                input.charAt(i + 2) == '%') {
            // Note this is a hack since nextChar only returns a single char
            // It is safe since <% does not require special treatment for EL
            // or for literals
            result.append('<');
            i+=3;
            return '%';
        } else if (ch == '%' && i + 2 < size && input.charAt(i + 1) == '\\' &&
                input.charAt(i + 2) == '>') {
            // Note this is a hack since nextChar only returns a single char
            // It is safe since %> does not require special treatment for EL
            // or for literals
            result.append('%');
            i+=3;
            return '>';
        } else if (ch == quote && strict) {
            String msg = Localizer.getMessage("jsp.error.attribute.noescape",
                    input, ""+ quote);
            throw new IllegalArgumentException(msg);
        } else {
            ++i;
        }

        return ch;
    }

    /*
     * Determines the type of expression by looking for the first unquoted ${
     * or #{.
     */
    private char getType(String value) {
        if (value == null) {
            return 0;
        }

        if (isELIgnored) {
            return 0;
        }

        int j = 0;
        int len = value.length();
        char current;

        while (j < len) {
            current = value.charAt(j);
            if (current == '\\') {
                // Escape character - skip a character
                j++;
            } else if (current == '#' && !isDeferredSyntaxAllowedAsLiteral) {
                if (j < (len -1) && value.charAt(j + 1) == '{') {
                    return '#';
                }
            } else if (current == '$') {
                if (j < (len - 1) && value.charAt(j + 1) == '{') {
                    return '$';
                }
            }
            j++;
        }
        return 0;
    }
}