File	Doc	Category	Size	Date	Package
TextUtil.java	API Doc	Example	8573	Mon Jul 23 13:26:50 BST 2007	org.apache.struts2.views.util

TextUtil

• java.lang.Object

Fields Summary
protected static final int	MAX_LENGTH
protected static final char[]	_stringChars We use arrays of char in the lookup table because it is faster appending this to a StringBuffer than appending a String

Constructors Summary

Methods Summary
protected static void	addMapping(int c, java.lang.String txt, java.lang.String[] strings) strings[c] = txt;
public static final java.lang.String	escapeHTML(java.lang.String s) Call escapeHTML(s, false) // Initialize the mapping table initMapping(); return escapeHTML(s, false);
public static final java.lang.String	escapeHTML(java.lang.String s, boolean escapeEmpty) Escape HTML. param s string to be escaped param escapeEmpty if true, then empty string will be escaped. int len = s.length(); if (len == 0) { return s; } if (!escapeEmpty) { String trimmed = s.trim(); if ((trimmed.length() == 0) || ("\"\"").equals(trimmed)) { return s; } } int i = 0; // First loop through String and check if escaping is needed at all // No buffers are copied at this time do { int index = s.charAt(i); if (index >= MAX_LENGTH) { if (index != 0x20AC) { // If not euro symbol continue; } break; } else if (_stringChars[index] != null) { break; } } while (++i < len); // If the check went to the end with no escaping then i should be == len now // otherwise we must continue escaping for real if (i == len) { return s; } // We found a character to escape and broke out at position i // Now copy all characters before that to StringBuffer sb // Since a char[] will be used for copying we might as well get // a complete copy of it so that we can use array indexing instead of charAt StringBuffer sb = new StringBuffer(len + 40); char[] chars = new char[len]; // Copy all chars from the String s to the chars buffer s.getChars(0, len, chars, 0); // Append the first i characters that we have checked to the resulting StringBuffer sb.append(chars, 0, i); int last = i; char[] subst; for (; i < len; i++) { char c = chars[i]; int index = c; if (index < MAX_LENGTH) { subst = _stringChars[index]; // It is faster to append a char[] than a String which is why we use this if (subst != null) { if (i > last) { sb.append(chars, last, i - last); } sb.append(subst); last = i + 1; } } // Check if it is the euro symbol. This could be changed to check in a second lookup // table in case one wants to convert more characters in that area else if (index == 0x20AC) { if (i > last) { sb.append(chars, last, i - last); } sb.append("€"); last = i + 1; } } if (i > last) { sb.append(chars, last, i - last); } return sb.toString();
protected static void	initMapping() String[] strings = new String[MAX_LENGTH]; addMapping(0x22, """, strings); // " addMapping(0x26, "&", strings); // & addMapping(0x3c, "<", strings); // < addMapping(0x3e, ">", strings); // > addMapping(0xa1, "¡", strings); // addMapping(0xa2, "¢", strings); // addMapping(0xa3, "£", strings); // addMapping(0xa9, "©", strings); // addMapping(0xae, "®", strings); // addMapping(0xbf, "¿", strings); // addMapping(0xc0, "À", strings); // addMapping(0xc1, "Á", strings); // addMapping(0xc2, "Â", strings); // addMapping(0xc3, "Ã", strings); // addMapping(0xc4, "Ä", strings); // addMapping(0xc5, "Å", strings); // addMapping(0xc6, "Æ", strings); // addMapping(0xc7, "Ç", strings); // addMapping(0xc8, "È", strings); // addMapping(0xc9, "É", strings); // addMapping(0xca, "Ê", strings); // addMapping(0xcb, "Ë", strings); // addMapping(0xcc, "Ì", strings); // addMapping(0xcd, "Í", strings); // addMapping(0xce, "Î", strings); // addMapping(0xcf, "Ï", strings); // addMapping(0xd0, "Ð", strings); // addMapping(0xd1, "Ñ", strings); // addMapping(0xd2, "Ò", strings); // addMapping(0xd3, "Ó", strings); // addMapping(0xd4, "Ô", strings); // addMapping(0xd5, "Õ", strings); // addMapping(0xd6, "Ö", strings); // addMapping(0xd7, "×", strings); // addMapping(0xd8, "Ø", strings); // addMapping(0xd9, "Ù", strings); // addMapping(0xda, "Ú", strings); // addMapping(0xdb, "Û", strings); // addMapping(0xdc, "Ü", strings); // addMapping(0xdd, "Ý", strings); // addMapping(0xde, "Þ", strings); // addMapping(0xdf, "ß", strings); // addMapping(0xe0, "à", strings); // addMapping(0xe1, "á", strings); // addMapping(0xe2, "â", strings); // addMapping(0xe3, "ã", strings); // addMapping(0xe4, "ä", strings); // addMapping(0xe5, "å", strings); // addMapping(0xe6, "æ", strings); // addMapping(0xe7, "ç", strings); // addMapping(0xe8, "è", strings); // addMapping(0xe9, "é", strings); // addMapping(0xea, "ê", strings); // addMapping(0xeb, "ë", strings); // addMapping(0xec, "ì", strings); // addMapping(0xed, "í", strings); // addMapping(0xee, "î", strings); // addMapping(0xef, "ï", strings); // addMapping(0xf0, "ð", strings); // addMapping(0xf1, "ñ", strings); // addMapping(0xf2, "ò", strings); // addMapping(0xf3, "ó", strings); // addMapping(0xf4, "ô", strings); // addMapping(0xf5, "õ", strings); // addMapping(0xf6, "ö", strings); // addMapping(0xf7, "÷", strings); // addMapping(0xf8, "ø", strings); // addMapping(0xf9, "ù", strings); // addMapping(0xfa, "ú", strings); // addMapping(0xfb, "û", strings); // addMapping(0xfc, "ü", strings); // addMapping(0xfd, "ý", strings); // addMapping(0xfe, "þ", strings); // addMapping(0xff, "ÿ", strings); // for (int i = 0; i < strings.length; i++) { String str = strings[i]; if (str != null) { _stringChars[i] = str.toCharArray(); } }