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FS: Allow userHome to be set and cached 

This permits callers to modify the meaning of userHome, which
may be useful if their application allows the user to select
different user settings locations.

Bug: 337101
Change-Id: I076815edeec1c20dea028f7840be3930337dff77
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
This commit is contained in:
Shawn O. Pearce 2011-03-14 09:17:39 -07:00
parent 5f82569cab
commit a4a00ea8f1
1 changed files with 21 additions and 3 deletions
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24
org.eclipse.jgit/src/org/eclipse/jgit/util/FS.java
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@ -99,7 +99,7 @@ public static FS detect(Boolean cygwinUsed) {
return new FS_POSIX_Java5();
}
private final File userHome;
private volatile Holder<File> userHome;
private volatile Holder<File> gitPrefix;
@ -107,7 +107,7 @@ public static FS detect(Boolean cygwinUsed) {
* Constructs a file system abstraction.
*/
protected FS() {
this.userHome = userHomeImpl();
// Do nothing by default.
}
/**
@ -182,7 +182,25 @@ public File resolve(final File dir, final String name) {
* @return the user's home directory; null if the user does not have one.
*/
public File userHome() {
return userHome;
Holder<File> p = userHome;
if (p == null) {
p = new Holder<File>(userHomeImpl());
userHome = p;
}
return p.value;
}
/**
* Set the user's home directory location.
*
* @param path
* the location of the user's preferences; null if there is no
* home directory for the current user.
* @return {@code this}.
*/
public FS setUserHome(File path) {
userHome = new Holder<File>(path);
return this;
}
/**