Newsgroup: it.comp.java
Titolo: formattazione HTML

ciao a tutti
c'è qualche classe di un qualche sconosciuto programmatore che, data una
stringa,
mi restituisca la stessa codificata in HTML (esempio : cioè -> cio&egrave;)
Nicola

 wrote in message
newscache$8amd9g$gai$1...@linuxintra.cnare.it...

prova a questo indirizzo 
http://jakarta.apache.org/ecs/index.html
 ,  tratta
di una libreria , sorgenti inclusi , per costruire
pagine html  da usare con servlet che le inviano al client.
P.S. fammi sapere se funziona  :)

ok, ma non è un pò esageato per convertire una singola stringa??
voglio dire, già la mia applicazione si frega decine di MB di memoria,
non è bello aggiungerci anche 200 classi gratis per una istruzione....
comunque adesso provo. grazie


stringa, mi restituisca la stessa codificata in HTML (esempio : cioè -> cio&egrave;)
... da 
http://www.webmacro.org/
 ;)
/*
HTML Escaping code
Copyright (C) 2000 Marc Palmer / AnyWare Ltd.
Acording to Marc, this code may be used under any license.
Thanks to Jason Hunter for his great book "JAVA Servlet Programming" used as
the source for the entity mappings. Thanks to CARDIACS for making the
most joyful music (
www.cardiacs.com/button.html
)
http://www.anyware.co.uk/java
 for updates and other stuff
*/
package org.webmacro.util;
/**
 * This class will escape characters that have an HTML entity
 * representation. It will not escape standard ASCII characters unless
 * it is necessary (i.e. will not escape ASCI #32 but will escape "&amp;").
 * Any characters with no corresponding entity are passed through unchanged.
 * It uses a quick string -> array mapping to avoid creating thousands of
 * temporary objects.
 */
public class HTMLEscaper {
  /**
   * A little bit of unit testing
   */
  public static void main(String[] args) {
	String text =
	  "This is a test of the html escaper & let's hope it really, "+
	  "really <B><I>works</I></B>! Is there an ÷ with an umlaut in the house?"+
	  "This code is ©copyleft. I like to be paid in úúús";
	System.out.println( "NOTE: Due to differences in ASCII fonts, the text "+
	  "sent to the escaper may not display properly. Hopefully you will be "+
	  "able to tell what it should have looked like from the escaped output.");
	System.out.println( "in: "+text );
	System.out.println( "out: "+escape( text) );
  }
  /**
   * This method will take the input and escape characters that have
   * an HTML entity representation.
   * It uses a quick string -> array mapping to avoid creating thousands of
   * temporary objects.
   * @param nonHTMLsrc String containing the text to make HTML-safe
   * @return String containing new copy of string with entities escaped
   */
  public static final String escape( String nonHTMLsrc)
  {
	StringBuffer res = new StringBuffer();
	int l = nonHTMLsrc.length();
	int idx;
	char c;
	for (int i = 0; i < l; i++)
	{
	  c = nonHTMLsrc.charAt(i);
	  idx = entityMap.indexOf( c);
	  if (idx == -1)
		res.append( c);
	  else
		res.append( quickEntities[idx]);
	}
	return res.toString();
  }
  /**
   * These are probably HTML 3.2 level... as it looks like some HTML 4 entities
   * are not present.
   */
  private static final String[][] entities = {
	/* We probably don't want to filter regular ASCII chars so we leave them out */
	{ "&", "amp" },
	{ "<", "lt" },
	{ ">", "gt" },
	{ "\"", "quot" },
	{ "\u0083", "#131" },
	{ "\u0084", "#132" },
	{ "\u0085", "#133" },
	{ "\u0086", "#134" },
	{ "\u0087", "#135" },
	{ "\u0089", "#137" },
	{ "\u008A", "#138" },
	{ "\u008B", "#139" },
	{ "\u008C", "#140" },
	{ "\u0091", "#145" },
	{ "\u0092", "#146" },
	{ "\u0093", "#147" },
	{ "\u0094", "#148" },
	{ "\u0095", "#149" },
	{ "\u0096", "#150" },
	{ "\u0097", "#151" },
	{ "\u0099", "#153" },
	{ "\u009A", "#154" },
	{ "\u009B", "#155" },
	{ "\u009C", "#156" },
	{ "\u009F", "#159" },
	{ "\u00A0", "nbsp" },
	{ "\u00A1", "iexcl" },
	{ "\u00A2", "cent" },
	{ "\u00A3", "pound" },
	{ "\u00A4", "curren" },
	{ "\u00A5", "yen" },
	{ "\u00A6", "brvbar" },
	{ "\u00A7", "sect" },
	{ "\u00A8", "uml" },
	{ "\u00A9", "copy" },
	{ "\u00AA", "ordf" },
	{ "\u00AB", "laquo" },
	{ "\u00AC", "not" },
	{ "\u00AD", "shy" },
	{ "\u00AE", "reg" },
	{ "\u00AF", "macr"},
	{ "\u00B0", "deg"},
	{ "\u00B1", "plusmn"},
	{ "\u00B2", "sup2"},
	{ "\u00B3", "sup3"},
	{ "\u00B4", "acute" },
	{ "\u00B5", "micro" },
	{ "\u00B6", "para" },
	{ "\u00B7", "middot" },
	{ "\u00B8", "cedil" },
	{ "\u00B9", "sup1" },
	{ "\u00BA", "ordm" },
	{ "\u00BB", "raquo" },
	{ "\u00BC", "frac14" },
	{ "\u00BD", "frac12" },
	{ "\u00BE", "frac34" },
	{ "\u00BF", "iquest" },
	{ "\u00C0", "Agrave" },
	{ "\u00C1", "Aacute" },
	{ "\u00C2", "Acirc" },
	{ "\u00C3", "Atilde" },
	{ "\u00C4", "Auml" },
	{ "\u00C5", "Aring" },
	{ "\u00C6", "AElig" },
	{ "\u00C7", "CCedil" },
	{ "\u00C8", "Egrave" },
	{ "\u00C9", "Eacute" },
	{ "\u00CA", "Ecirc" },
	{ "\u00CB", "Euml" },
	{ "\u00CC", "Igrave" },
	{ "\u00CD", "Iacute" },
	{ "\u00CE", "Icirc" },
	{ "\u00CF", "Iuml" },
	{ "\u00D0", "ETH" },
	{ "\u00D1", "Ntilde" },
	{ "\u00D2", "Ograve" },
	{ "\u00D3", "Oacute" },
	{ "\u00D4", "Ocirc" },
	{ "\u00D5", "Otilde" },
	{ "\u00D6", "Ouml" },
	{ "\u00D7", "times" },
	{ "\u00D8", "Oslash" },
	{ "\u00D9", "Ugrave" },
	{ "\u00DA", "Uacute" },
	{ "\u00DB", "Ucirc" },
	{ "\u00DC", "Uuml" },
	{ "\u00DD", "Yacute" },
	{ "\u00DE", "THORN" },
	{ "\u00DF", "szlig" },
	{ "\u00E0", "agrave" },
	{ "\u00E1", "aacute" },
	{ "\u00E2", "acirc" },
	{ "\u00E3", "atilde" },
	{ "\u00E4", "auml" },
	{ "\u00E5", "aring" },
	{ "\u00E6", "aelig" },
	{ "\u00E7", "ccedil" },
	{ "\u00E8", "egrave" },
	{ "\u00E9", "eacute" },
	{ "\u00EA", "ecirc" },
	{ "\u00EB", "euml" },
	{ "\u00EC", "igrave" },
	{ "\u00ED", "iacute" },
	{ "\u00EE", "icirc" },
	{ "\u00EF", "iuml" },
	{ "\u00F0", "eth" },
	{ "\u00F1", "ntilde" },
	{ "\u00F2", "ograve" },
	{ "\u00F3", "oacute" },
	{ "\u00F4", "ocirc" },
	{ "\u00F5", "otilde" },
	{ "\u00F6", "ouml" },
	{ "\u00F7", "divid" },
	{ "\u00F8", "oslash" },
	{ "\u00F9", "ugrave" },
	{ "\u00FA", "uacute" },
	{ "\u00FB", "ucirc" },
	{ "\u00FC", "uuml" },
	{ "\u00FD", "yacute" },
	{ "\u00FE", "thorn" },
	{ "\u00FF", "yuml" }
  };
  private static String entityMap;
  private static String[] quickEntities;
  static {
	// Initialize some local mappings to speed it all up
	int l = entities.length;
	StringBuffer temp = new StringBuffer();
	quickEntities = new String[l];
	for (int i = 0; i < l; i++)
	{
	  temp.append( entities[i][0]);
	  quickEntities[i] = "&"+entities[i][1]+";";
	}
	entityMap = temp.toString();
  }
}