--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/fschmidt/util/java/HtmlUtils.java	Sun Oct 05 17:24:15 2025 -0600
@@ -0,0 +1,178 @@
+/*
+Copyright (c) 2008  Franklin Schmidt <fschmidt@gmail.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+package fschmidt.util.java;
+
+import java.lang.reflect.Field;
+import java.net.URLDecoder;
+import java.net.URLEncoder;
+import java.util.regex.Pattern;
+import java.util.regex.Matcher;
+
+
+public final class HtmlUtils {
+	private HtmlUtils() {}  // never
+
+	public static String htmlEncode(String s) {
+		char[] a = s.toCharArray();
+		StringBuilder buf = new StringBuilder();
+		for( int i=0; i<a.length; i++ ) {
+			char c = a[i];
+			switch(c) {
+			case '&':
+				buf.append("&amp;");
+				break;
+			case '<':
+				buf.append("&lt;");
+				break;
+			case '>':
+				buf.append("&gt;");
+				break;
+			case '"':
+				buf.append("&quot;");
+				break;
+			default:
+				buf.append(c);
+			}
+		}
+		return buf.toString();
+	}
+
+	private static final Pattern entityPtn = Pattern.compile(
+		"&#(\\d+);"
+	);
+
+	public static String htmlDecode(String s) {
+		StringBuffer buf = new StringBuffer();
+		Matcher m = entityPtn.matcher(s);
+		while( m.find() ) {
+			String entity = new String(new char[]{(char)Integer.parseInt(m.group(1))});
+			m.appendReplacement(buf,entity);
+		}
+		m.appendTail(buf);
+		s = buf.toString();
+		s = s.replace("&nbsp;"," ");
+		s = s.replace("&quot;","\"");
+		s = s.replace("&gt;",">");
+		s = s.replace("&lt;","<");
+		s = s.replace("&amp;","&");
+		return s;
+	}
+
+	public static String javascriptStringEncode(String s) {
+		char[] a = s.toCharArray();
+		StringBuilder buf = new StringBuilder();
+		for( int i=0; i<a.length; i++ ) {
+			char c = a[i];
+			switch(c) {
+			case '\\':
+				buf.append("\\\\");
+				break;
+			case '\'':
+				buf.append("\\'");
+				break;
+			case '\"':
+				buf.append("\\\"");
+				break;
+			case '\n':
+				buf.append("\\n");
+				break;
+			case '\r':
+				buf.append("\\r");
+				break;
+			case '<':
+				buf.append("\\x3C");
+				break;
+			case '>':
+				buf.append("\\x3E");
+				break;
+			case '=':
+				buf.append("\\x3D");
+				break;
+			default:
+				buf.append(c);
+			}
+		}
+		return buf.toString();
+	}
+
+	public static String breakUp(final String text,int maxSize,boolean hasCharEntities) {
+		StringBuilder buf = new StringBuilder();
+		int n = 0;
+		int len = text.length();
+		for( int i=0; i<len; i++ ) {
+			char c = text.charAt(i);
+			if( hasCharEntities && c=='&' ) {
+				do {
+					buf.append(c);
+					c = text.charAt(++i);
+				} while( c != ';' );
+			} else if( Character.isWhitespace(c) ) {
+				n = 0;
+			} else {
+				if( ++n > maxSize ) {
+					buf.append("<wbr />");
+					n = 0;
+				}
+			}
+			buf.append(c);
+		}
+		return buf.toString();
+	}
+
+	public static String urlEncode(String s) {
+		try {
+			return URLEncoder.encode(s,"UTF-8");
+		} catch(java.io.UnsupportedEncodingException e) {
+			throw new RuntimeException(e);
+		}
+	}
+
+	public static String urlDecode(String s) {
+		try {
+			return URLDecoder.decode(s,"UTF-8");
+		} catch(java.io.UnsupportedEncodingException e) {
+			throw new RuntimeException(e);
+		}
+	}
+
+	public static String toJson(Object object) {
+		StringBuilder builder = new StringBuilder("{");
+		try {
+			Field[] fields = object.getClass().getDeclaredFields();
+			for (Field field : fields) {
+				field.setAccessible(true);
+				Object value = field.get(object);
+				if (value != null) {
+					if (builder.length() > 1)
+						builder.append(',');
+					builder.append('\"').append(field.getName()).append("\": \"").append(javascriptStringEncode(value.toString())).append("\"\n");
+				}
+			}
+		} catch (IllegalAccessException e) {
+			throw new RuntimeException(e);
+		}
+		builder.append('}');
+		return builder.toString();
+	}
+
+}