/*
* © Copyright IBM Corp. 2012-2013
*
* Licensed 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 com.ibm.commons.util;
/**
* Some utilities for path handling.
* @ibm-api
*/
public class PathUtil {
/**
* Add to path ensuring there is just one separator in between the 2 parts..
* @ibm-api
*/
public static String concat(String path1, String path2, char sep) {
if(StringUtil.isEmpty(path1)) {
return path2;
}
if(StringUtil.isEmpty(path2)) {
return path1;
}
StringBuilder b = new StringBuilder();
if(path1.charAt(path1.length()-1)==sep) {
b.append(path1,0,path1.length()-1);
} else {
b.append(path1);
}
b.append(sep);
if(path2.charAt(0)==sep) {
b.append(path2,1,path2.length());
} else {
b.append(path2);
}
return b.toString();
}
/**
* Add to path ensuring that the resulting path will start with a '/' and
* doesn't end with a '/'.
* @ibm-api
*/
public static String concatPath(String path1, String path2, char sep) {
StringBuilder b = new StringBuilder();
if(StringUtil.isNotEmpty(path1)) {
if(path1.charAt(0)!=sep) {
b.append(sep);
}
if(path1.charAt(path1.length()-1)==sep) {
b.append(path1,0,path1.length()-1);
} else {
b.append(path1);
}
}
if(StringUtil.isNotEmpty(path2)) {
if(path2.charAt(0)!=sep) {
b.append(sep);
}
if(path2.charAt(path2.length()-1)==sep) {
b.append(path2,0,path2.length()-1);
} else {
b.append(path2);
}
}
return b.toString();
}
/**
* Add to path ensuring that the resulting path doesn't start with a '/' and
* doesn't end with a '/'.
* @ibm-api
*/
public static String concatParts(String path1, String path2, char sep) {
StringBuilder b = new StringBuilder();
if(path1.charAt(path1.length()-1)==sep) {
b.append(path1,0,path1.length()-1);
} else {
b.append(path1);
}
if(path2.charAt(0)!=sep) {
b.append(sep);
}
if(path2.charAt(path2.length()-1)==sep) {
b.append(path2,0,path2.length()-1);
} else {
b.append(path2);
}
return b.toString();
}
/**
* Normalize a path, ensuring that it start with a '/' and does not end with a '/'.
* @ibm-api
*/
public static String normalizePath(String path, char sep) {
boolean needLeadingSlash = path.charAt(0)!=sep;
boolean needRemoveTrailingSlash = path.charAt(path.length()-1)==sep;
if(needLeadingSlash || needRemoveTrailingSlash) {
if(needLeadingSlash && needRemoveTrailingSlash) {
StringBuilder b = new StringBuilder();
b.append(sep);
b.append(path,0,path.length()-1);
return b.toString();
} else if(needLeadingSlash) {
StringBuilder b = new StringBuilder();
b.append(sep);
b.append(path);
return b.toString();
} else {
return path.substring(0,path.length()-1);
}
}
return path;
}
/**
* Surrounds a path, ensuring that it starts with a '/' and ends with a '/'.
* @ibm-api
*/
public static String surroundPath(String path, char sep) {
boolean needLeadingSlash = path.charAt(0)!=sep;
boolean needTrailingSlash = path.charAt(path.length()-1)!=sep;
if(needLeadingSlash || needTrailingSlash) {
if(needLeadingSlash && needTrailingSlash) {
StringBuilder b = new StringBuilder();
b.append(sep);
b.append(path);
b.append(sep);
return b.toString();
} else if(needLeadingSlash) {
StringBuilder b = new StringBuilder();
b.append(sep);
b.append(path);
return b.toString();
} else {
StringBuilder b = new StringBuilder();
b.append(path);
b.append(sep);
return b.toString();
}
}
return path;
}
}