Java Utililty Methods Path Relative

List of utility methods to do Path Relative

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Description

The list of methods to do Path Relative are organized into topic(s).

Method

StringgetRelativeUnixPath(File baseDir, File refFile)
get Relative Unix Path 
String bpn = baseDir.getCanonicalPath().replace('\\', '/');
String rpn = refFile.getCanonicalPath().replace('\\', '/');
int len = Math.min(bpn.length(), rpn.length());
for (int i = 0, n = 0; i < len; i++) {
    char c = bpn.charAt(i);
    if (c == '/') {
        n = i + 1;
    } else if (c != rpn.charAt(i)) {
...
StringmakeRelativePath(File from, File to)
make Relative Path 
File f = makeRelativeFile(from, to);
return (f != null ? f.getPath() : null);
StringmakeRelativePath(File parent, File file)
Find the relative path from some parent directory to a file nested within. 
String filePath = file.getAbsolutePath();
String parentPath = parent.getAbsolutePath();
if (filePath.startsWith(parentPath)) {
    filePath = filePath.substring(parentPath.length() + 1);
return filePath;
IPathmakeRelativePath(IPath path, IPath relativeTo)
make Relative Path 
int segments = matchingFirstSegments(relativeTo, path);
if (segments > 0) {
    IPath prefix = relativeTo.removeFirstSegments(segments);
    IPath suffix = path.removeFirstSegments(segments);
    IPath relativePath = new Path(""); 
    for (int i = 0; i < prefix.segmentCount(); ++i) {
        relativePath = relativePath.append(".." + IPath.SEPARATOR); 
    return relativePath.append(suffix);
return null;
StringmakeRelativePathAbsolute(String relativePath)
make Relative Path Absolute 
File f = new File(relativePath);
String prefix = f.getAbsolutePath();
if (!prefix.endsWith(File.separator)) {
    prefix = prefix + File.separator;
int lastSlash = prefix.lastIndexOf(File.separator);
if (lastSlash != -1) {
    return prefix.substring(0, lastSlash + 1);
...
ListmakeRelativePaths(String classDir, List files)
make Relative Paths 
List<String> relativePaths = new ArrayList<String>();
for (File file : files) {
    int prefixEnd = classDir.length() + 1;
    relativePaths.add(file.getPath().substring(prefixEnd));
return relativePaths;
IPathmakeRelativePathToIncludes(IPath fullPath, String[] includePaths)
make Relative Path To Includes 
IPath relativePath = null;
int mostSegments = 0;
for (int i = 0; i < includePaths.length; ++i) {
    IPath includePath = new Path(includePaths[i]);
    if (isPrefix(includePath, fullPath)) {
        int segments = includePath.segmentCount();
        if (segments > mostSegments) {
            relativePath = fullPath.removeFirstSegments(segments).setDevice(null);
...