com.sun.jdo.api.persistence.enhancer.util.FilePath Maven / Gradle / Ivy
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// Portions Copyright [2019] Payara Foundation and/or affiliates
package com.sun.jdo.api.persistence.enhancer.util;
import java.io.File;
import java.io.IOException;
import java.util.StringTokenizer;
import java.util.Vector;
/**
* FilePath provides general file path manipulation utilities.
*/
public class FilePath {
private static String cwdAbsolute;
/**
* Return the absolute path for a file. All directory separators are
* converted to be File.separatorChar
*/
public static String getAbsolutePath(File file) {
/* VJ++ blows it here and doesn't use File.separatorChar when making
a relative path absolute. It uses '/' instead. */
String basicAbsolute = file.getAbsolutePath();
if (file.separatorChar == '/')
return basicAbsolute.replace('\\', '/');
else
return basicAbsolute.replace('/', '\\');
}
private static String getCwdAbsolute() {
if (cwdAbsolute == null)
cwdAbsolute = getAbsolutePath(new File("."));//NOI18N
return cwdAbsolute;
}
/**
* Attempt to produce a canonical path name for the specified file
*/
public static String canonicalize(File file) {
try {
return file.getCanonicalPath();
} catch (IOException ioe) {
/* JDK 1.1.4 gets an IOException if you pass it a UNC path name. */
}
/* Do it the hard way if getCanonicalPath fails.
* This is far from perfect.
* - It doesn't know about multiple mount points
* - Doesn't deal with case differences.
*/
String absolutePath = getAbsolutePath(file);
Vector components = new Vector();
StringTokenizer parser =
new StringTokenizer(absolutePath, File.separator, true);
while (parser.hasMoreElements())
components.addElement(parser.nextToken());
boolean editted = true;
while (editted) {
editted = false;
for (int i=1; i 2) {
if (!((String)components.elementAt(i-2)).equals(File.separator) &&
((String)components.elementAt(i-3)).equals(File.separator)) {
components.removeElementAt(i-2);
components.removeElementAt(i-3);
}
}
editted = true;
}
}
}
/* Special case for Windows */
String cwd = getCwdAbsolute();
if (cwd.length() > 2 &&
cwd.charAt(0) != File.separatorChar &&
cwd.charAt(1) == ':') {
/* probably a drive letter */
if (((String)components.elementAt(0)).equals(File.separator) &&
(components.size() == 1 ||
!((String)components.elementAt(1)).equals(File.separator))) {
String drive = cwd.substring(0,2);
components.insertElementAt(drive, 0);
}
}
/* Remove a trailing File.separatorChar */
if (components.size() > 0 &&
((String)components.elementAt(components.size()-1)).equals(
File.separator))
components.removeElementAt(components.size()-1);
StringBuilder result = new StringBuilder();
for (int j=0; j 2 &&
cwd.charAt(0) != File.separatorChar &&
cwd.charAt(1) == ':') {
equal = f1.equalsIgnoreCase(f2);
}
else
equal = f1.equals(f2);
return equal;
}
}