stringutil.java

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                throw new java.text.ParseException(
                       "Expecting letter, digit or \"_\" "
                        + "here, (the first character of the key) but found "
                        + jQuote(String.valueOf(c))
                        + " at position " + p + ".",
                        p);
            }
            key = s.substring(keyStart, p);

            // skip ws
            while (p < ln) {
                c = s.charAt(p);
                if (!Character.isWhitespace(c)) {
                    break;
                }
                p++;
            }
            if (p == ln) {
                if (defaultValue == null) {
                    throw new java.text.ParseException(
                            "Expecting \":\", but reached "
                            + "the end of the string "
                            + " at position " + p + ".",
                            p);
                }
                value = defaultValue;
            } else if (c != ':') {
                if (defaultValue == null || c != ',') {
                    throw new java.text.ParseException(
                            "Expecting \":\" here, but found "
                            + jQuote(String.valueOf(c))
                            + " at position " + p + ".",
                            p);
                }

                // skip ","
                p++;
                
                value = defaultValue;
            } else {
                // skip ":"
                p++;
    
                // skip ws
                while (p < ln) {
                    c = s.charAt(p);
                    if (!Character.isWhitespace(c)) {
                        break;
                    }
                    p++;
                }
                if (p == ln) {
                    throw new java.text.ParseException(
                            "Expecting the value of the key "
                            + "here, but reached the end of the string "
                            + " at position " + p + ".",
                            p);
                }
                valueStart = p;
    
                // seek value end
                while (p < ln) {
                    c = s.charAt(p);
                    if (!(Character.isLetterOrDigit(c) || c == '_')) {
                        break;
                    }
                    p++;
                }
                if (valueStart == p) {
                    throw new java.text.ParseException(
                            "Expecting letter, digit or \"_\" "
                            + "here, (the first character of the value) "
                            + "but found "
                            + jQuote(String.valueOf(c))
                            + " at position " + p + ".",
                            p);
                }
                value = s.substring(valueStart, p);

                // skip ws
                while (p < ln) {
                    c = s.charAt(p);
                    if (!Character.isWhitespace(c)) {
                        break;
                    }
                    p++;
                }
                
                // skip ","
                if (p < ln) {
                    if (c != ',') {
                        throw new java.text.ParseException(
                                "Excpecting \",\" or the end "
                                + "of the string here, but found "
                                + jQuote(String.valueOf(c))
                                + " at position " + p + ".",
                                p);
                    } else {
                        p++;
                    }
                }
            }
            
            // store the key-value pair
            if (map.put(key, value) != null) {
                throw new java.text.ParseException(
                        "Dublicated key: "
                        + jQuote(key), keyStart);
            }
        }
        
        return map;
    }
    
    /**
     * @return whether the name is a valid XML tagname.
     * (This routine might only be 99% accurate. Should maybe REVISIT) 
     */
    static public boolean isXMLID(String name) {
        for (int i=0; i<name.length(); i++) {
            char c = name.charAt(i);
            if (i==0) {
                if (c== '-' || c=='.' || Character.isDigit(c))
                    return false;
            }
            if (!Character.isLetterOrDigit(c) && c != ':' && c != '_' && c != '-' && c!='.') {
                return false;
            }
        }
        return true;
    }
    
    /**
     * @return whether the qname matches the combination of nodeName, nsURI, and environment prefix settings. 
     */
    
    static public boolean matchesName(String qname, String nodeName, String nsURI, Environment env) {
        String defaultNS = env.getDefaultNS();
        if ((defaultNS != null) && defaultNS.equals(nsURI)) {
            return qname.equals(nodeName) 
               || qname.equals(Template.DEFAULT_NAMESPACE_PREFIX + ":" + nodeName); 
        }
        if ("".equals(nsURI)) {
            if (defaultNS != null) {
                return qname.equals(Template.NO_NS_PREFIX + ":" + nodeName);
            } else {
                return qname.equals(nodeName) || qname.equals(Template.NO_NS_PREFIX + ":" + nodeName);
            }
        }
        String prefix = env.getPrefixForNamespace(nsURI);
        if (prefix == null) {
            return false; // Is this the right thing here???
        }
        return qname.equals(prefix + ":" + nodeName);
    }
    
    /**
     * Pads the string at the left with spaces until it reaches the desired
     * length. If the string is longer than this length, then it returns the
     * unchanged string. 
     * 
     * @param s the string that will be padded.
     * @param minLength the length to reach.
     */
    public static String leftPad(String s, int minLength) {
        return leftPad(s, minLength, ' ');
    }
    
    /**
     * Pads the string at the left with the specified character until it reaches
     * the desired length. If the string is longer than this length, then it
     * returns the unchanged string.
     * 
     * @param s the string that will be padded.
     * @param minLength the length to reach.
     * @param filling the filling pattern.
     */
    public static String leftPad(String s, int minLength, char filling) {
        int ln = s.length();
        if (minLength <= ln) {
            return s;
        }
        
        StringBuffer res = new StringBuffer(minLength);
        
        int dif = minLength - ln;
        for (int i = 0; i < dif; i++) {
            res.append(filling);
        }
        
        res.append(s);
        
        return res.toString();
    }

    /**
     * Pads the string at the left with a filling pattern until it reaches the
     * desired length. If the string is longer than this length, then it returns
     * the unchanged string. For example: <code>leftPad('ABC', 9, '1234')</code>
     * returns <code>"123412ABC"</code>.
     * 
     * @param s the string that will be padded.
     * @param minLength the length to reach.
     * @param filling the filling pattern. Must be at least 1 characters long.
     *     Can't be <code>null</code>.
     */
    public static String leftPad(String s, int minLength, String filling) {
        int ln = s.length();
        if (minLength <= ln) {
            return s;
        }
        
        StringBuffer res = new StringBuffer(minLength);

        int dif = minLength - ln;
        int fln = filling.length();
        if (fln == 0) {
            throw new IllegalArgumentException(
                    "The \"filling\" argument can't be 0 length string.");
        }
        int cnt = dif / fln;
        for (int i = 0; i < cnt; i++) {
            res.append(filling);
        }
        cnt = dif % fln;
        for (int i = 0; i < cnt; i++) {
            res.append(filling.charAt(i));
        }
        
        res.append(s);
        
        return res.toString();
    }
    
    /**
     * Pads the string at the right with spaces until it reaches the desired
     * length. If the string is longer than this length, then it returns the
     * unchanged string. 
     * 
     * @param s the string that will be padded.
     * @param minLength the length to reach.
     */
    public static String rightPad(String s, int minLength) {
        return rightPad(s, minLength, ' ');
    }
    
    /**
     * Pads the string at the right with the specified character until it
     * reaches the desired length. If the string is longer than this length,
     * then it returns the unchanged string.
     * 
     * @param s the string that will be padded.
     * @param minLength the length to reach.
     * @param filling the filling pattern.
     */
    public static String rightPad(String s, int minLength, char filling) {
        int ln = s.length();
        if (minLength <= ln) {
            return s;
        }
        
        StringBuffer res = new StringBuffer(minLength);

        res.append(s);
        
        int dif = minLength - ln;
        for (int i = 0; i < dif; i++) {
            res.append(filling);
        }
        
        return res.toString();
    }

    /**
     * Pads the string at the right with a filling pattern until it reaches the
     * desired length. If the string is longer than this length, then it returns
     * the unchanged string. For example: <code>rightPad('ABC', 9, '1234')</code>
     * returns <code>"ABC412341"</code>. Note that the filling pattern is
     * started as if you overlay <code>"123412341"</code> with the left-aligned
     * <code>"ABC"</code>, so it starts with <code>"4"</code>.
     * 
     * @param s the string that will be padded.
     * @param minLength the length to reach.
     * @param filling the filling pattern. Must be at least 1 characters long.
     *     Can't be <code>null</code>.
     */
    public static String rightPad(String s, int minLength, String filling) {
        int ln = s.length();
        if (minLength <= ln) {
            return s;
        }
        
        StringBuffer res = new StringBuffer(minLength);

        res.append(s);

        int dif = minLength - ln;
        int fln = filling.length();
        if (fln == 0) {
            throw new IllegalArgumentException(
                    "The \"filling\" argument can't be 0 length string.");
        }
        int start = ln % fln;
        int end = fln - start <= dif
                ? fln
                : start + dif;
        for (int i = start; i < end; i++) {
            res.append(filling.charAt(i));
        }
        dif -= end - start;
        int cnt = dif / fln;
        for (int i = 0; i < cnt; i++) {
            res.append(filling);
        }
        cnt = dif % fln;
        for (int i = 0; i < cnt; i++) {
            res.append(filling.charAt(i));
        }
        
        return res.toString();
    }
    
}