package org.owasp.webscarab.util;
import java.util.HashMap;
import java.util.Map;
public class HtmlEncoder
{
static Map<Object, Object> e2i = new HashMap<Object, Object>();
static Map<Object, Object> i2e = new HashMap<Object, Object>();
// html entity list
private static Object[][] entities =
{
{"quot", new Integer( 34 )}, // " - double-quote
{"amp", new Integer( 38 )}, // & - ampersand
{"lt", new Integer( 60 )}, // < - less-than
{"gt", new Integer( 62 )}, // > - greater-than
{"nbsp", new Integer( 160 )}, // non-breaking space
{"copy", new Integer( 169 )}, // � - copyright
{"reg", new Integer( 174 )}, // � - registered trademark
{"Agrave", new Integer( 192 )}, // � - uppercase A, grave accent
{"Aacute", new Integer( 193 )}, // � - uppercase A, acute accent
{"Acirc", new Integer( 194 )}, // � - uppercase A, circumflex accent
{"Atilde", new Integer( 195 )}, // � - uppercase A, tilde
{"Auml", new Integer( 196 )}, // � - uppercase A, umlaut
{"Aring", new Integer( 197 )}, // � - uppercase A, ring
{"AElig", new Integer( 198 )}, // � - uppercase AE
{"Ccedil", new Integer( 199 )}, // � - uppercase C, cedilla
{"Egrave", new Integer( 200 )}, // � - uppercase E, grave accent
{"Eacute", new Integer( 201 )}, // � - uppercase E, acute accent
{"Ecirc", new Integer( 202 )}, // � - uppercase E, circumflex accent
{"Euml", new Integer( 203 )}, // � - uppercase E, umlaut
{"Igrave", new Integer( 204 )}, // � - uppercase I, grave accent
{"Iacute", new Integer( 205 )}, // � - uppercase I, acute accent
{"Icirc", new Integer( 206 )}, // � - uppercase I, circumflex accent
{"Iuml", new Integer( 207 )}, // � - uppercase I, umlaut
{"ETH", new Integer( 208 )}, // � - uppercase Eth, Icelandic
{"Ntilde", new Integer( 209 )}, // � - uppercase N, tilde
{"Ograve", new Integer( 210 )}, // � - uppercase O, grave accent
{"Oacute", new Integer( 211 )}, // � - uppercase O, acute accent
{"Ocirc", new Integer( 212 )}, // � - uppercase O, circumflex accent
{"Otilde", new Integer( 213 )}, // � - uppercase O, tilde
{"Ouml", new Integer( 214 )}, // � - uppercase O, umlaut
{"Oslash", new Integer( 216 )}, // � - uppercase O, slash
{"Ugrave", new Integer( 217 )}, // � - uppercase U, grave accent
{"Uacute", new Integer( 218 )}, // � - uppercase U, acute accent
{"Ucirc", new Integer( 219 )}, // � - uppercase U, circumflex accent
{"Uuml", new Integer( 220 )}, // � - uppercase U, umlaut
{"Yacute", new Integer( 221 )}, // � - uppercase Y, acute accent
{"THORN", new Integer( 222 )}, // � - uppercase THORN, Icelandic
{"szlig", new Integer( 223 )}, // � - lowercase sharps, German
{"agrave", new Integer( 224 )}, // � - lowercase a, grave accent
{"aacute", new Integer( 225 )}, // � - lowercase a, acute accent
{"acirc", new Integer( 226 )}, // � - lowercase a, circumflex accent
{"atilde", new Integer( 227 )}, // � - lowercase a, tilde
{"auml", new Integer( 228 )}, // � - lowercase a, umlaut
{"aring", new Integer( 229 )}, // � - lowercase a, ring
{"aelig", new Integer( 230 )}, // � - lowercase ae
{"ccedil", new Integer( 231 )}, // � - lowercase c, cedilla
{"egrave", new Integer( 232 )}, // � - lowercase e, grave accent
{"eacute", new Integer( 233 )}, // � - lowercase e, acute accent
{"ecirc", new Integer( 234 )}, // � - lowercase e, circumflex accent
{"euml", new Integer( 235 )}, // � - lowercase e, umlaut
{"igrave", new Integer( 236 )}, // � - lowercase i, grave accent
{"iacute", new Integer( 237 )}, // � - lowercase i, acute accent
{"icirc", new Integer( 238 )}, // � - lowercase i, circumflex accent
{"iuml", new Integer( 239 )}, // � - lowercase i, umlaut
{"igrave", new Integer( 236 )}, // � - lowercase i, grave accent
{"iacute", new Integer( 237 )}, // � - lowercase i, acute accent
{"icirc", new Integer( 238 )}, // � - lowercase i, circumflex accent
{"iuml", new Integer( 239 )}, // � - lowercase i, umlaut
{"eth", new Integer( 240 )}, // � - lowercase eth, Icelandic
{"ntilde", new Integer( 241 )}, // � - lowercase n, tilde
{"ograve", new Integer( 242 )}, // � - lowercase o, grave accent
{"oacute", new Integer( 243 )}, // � - lowercase o, acute accent
{"ocirc", new Integer( 244 )}, // � - lowercase o, circumflex accent
{"otilde", new Integer( 245 )}, // � - lowercase o, tilde
{"ouml", new Integer( 246 )}, // � - lowercase o, umlaut
{"oslash", new Integer( 248 )}, // � - lowercase o, slash
{"ugrave", new Integer( 249 )}, // � - lowercase u, grave accent
{"uacute", new Integer( 250 )}, // � - lowercase u, acute accent
{"ucirc", new Integer( 251 )}, // � - lowercase u, circumflex accent
{"uuml", new Integer( 252 )}, // � - lowercase u, umlaut
{"yacute", new Integer( 253 )}, // � - lowercase y, acute accent
{"thorn", new Integer( 254 )}, // � - lowercase thorn, Icelandic
{"yuml", new Integer( 255 )}, // � - lowercase y, umlaut
{"euro", new Integer( 8364 )},// Euro symbol
};
static {
for(int i=0; i<entities.length; i++)
e2i.put(entities[i][0], entities[i][1]);
for(int i=0; i<entities.length; i++)
i2e.put(entities[i][1], entities[i][0]);
}
/**
* Turns funky characters into HTML entity equivalents<p>
*
* e.g. <tt>"bread" & "butter"</tt> => <tt>"bread" &
* "butter"</tt> . Update: supports nearly all HTML entities, including funky
* accents. See the source code for more detail. Adapted from
* http://www.purpletech.com/code/src/com/purpletech/util/Utils.java.
*
* @param s1 Description of the Parameter
* @return Description of the Return Value
*/
public static String encode( String s1 )
{
StringBuffer buf = new StringBuffer();
int i;
for ( i = 0; i < s1.length(); ++i )
{
char ch = s1.charAt( i );
String entity = (String) i2e.get( new Integer( ch ) );
if ( entity == null )
{
if ( ch > 128 )
{
buf.append( "&#" + ( (int) ch ) + ";" );
}
else
{
buf.append( ch );
}
}
else
{
buf.append( "&" + entity + ";" );
}
}
return buf.toString();
}
/**
* Given a string containing entity escapes, returns a string containing the actual Unicode
* characters corresponding to the escapes. Adapted from
* http://www.purpletech.com/code/src/com/purpletech/util/Utils.java.
*
* @param s1 Description of the Parameter
* @return Description of the Return Value
*/
public static String decode( String s1 )
{
StringBuffer buf = new StringBuffer();
int i;
for ( i = 0; i < s1.length(); ++i )
{
char ch = s1.charAt( i );
if ( ch == '&' )
{
int semi = s1.indexOf( ';', i + 1 );
if ( semi == -1 )
{
buf.append( ch );
continue;
}
String entity = s1.substring( i + 1, semi );
Integer iso;
if ( entity.charAt( 0 ) == '#' )
{
iso = new Integer( entity.substring( 1 ) );
}
else
{
iso = (Integer) e2i.get( entity );
}
if ( iso == null )
{
buf.append( "&" + entity + ";" );
}
else
{
buf.append( (char) ( iso.intValue() ) );
}
i = semi;
}
else
{
buf.append( ch );
}
}
return buf.toString();
}
}