/*
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package org.apache.flex.utils;
/**
* This is all that is left of a rather large collection of utilties.
*
* The documentation for these utilities used to say:
* String utilities which exist in JDK 1.4 but are unavailable in JDK 1.3
* The jakarta oro package is used for regular expressions support.
*/
public class StringUtils
{
/**
* character escaping. For example, "\u0041-\u0043" returns "\\u0041-\\u0043".
*
* @param s The string to be formatted.
* @return a formatted string
*/
public static String formatString(String s)
{
StringBuilder result = new StringBuilder(s.length() + 2);
result.append('"');
for (int i = 0; i < s.length(); i++)
{
switch (s.charAt(i))
{
case '\\':
// Leave unicode characters as is.
if ((i + 1 < s.length()) && (s.charAt(i + 1) == 'u'))
{
result.append("\\");
}
else
{
result.append("\\\\");
}
break;
case '"':
result.append("\\\"");
break;
case '\b':
result.append("\\b");
break;
case '\t':
result.append("\\t");
break;
case '\f':
result.append("\\f");
break;
case '\r':
result.append("\\r");
break;
case '\n':
result.append("\\n");
break;
default:
if (s.charAt(i) < ' ')
{
result.append("\\x").append((int) s.charAt(i)).append("X");
}
else
{
result.append(s.charAt(i));
}
}
}
result.append('"');
return result.toString();
}
public static String join(String[] a, String c)
{
StringBuilder sb = new StringBuilder();
int n = a.length;
for (int i = 0; i < n; i++)
{
sb.append(a[i]);
if (i < n - 1)
sb.append(c);
}
return sb.toString();
}
}