wro4j-core/src/main/java/ro/isdc/wro/util/WroUtil.java
public static final String getFullPath(final String path) {
    final String fullPath = FilenameUtils.getFullPath(path);
    return replaceWithServletContextSeparatorIfNedded(fullPath);
  }
public static final String getFullPath(final String path) {
    final String fullPath = FilenameUtils.getFullPath(path);
    return replaceWithServletContextSeparatorIfNedded(fullPath);
  }
Similar to {@link FilenameUtils#getFullPath(String)}, but fixes the problem with Windows platform for situations
when the path starts with "/" (servlet context relative resources) which are resolved to "\" on windows.

@param path
to compute filePath from.
@return full path from the provided path.