diff options
Diffstat (limited to 'org.eclipse.jgit/src/org/eclipse/jgit/util/FS.java')
| -rw-r--r-- | org.eclipse.jgit/src/org/eclipse/jgit/util/FS.java | 34 |
1 files changed, 33 insertions, 1 deletions
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/util/FS.java b/org.eclipse.jgit/src/org/eclipse/jgit/util/FS.java index 857b980a33..51b5a45ac2 100644 --- a/org.eclipse.jgit/src/org/eclipse/jgit/util/FS.java +++ b/org.eclipse.jgit/src/org/eclipse/jgit/util/FS.java @@ -101,6 +101,8 @@ public abstract class FS { private final File userHome; + private volatile Holder<File> gitPrefix; + /** * Constructs a file system abstraction. */ @@ -258,7 +260,29 @@ public abstract class FS { } /** @return the $prefix directory C Git would use. */ - public abstract File gitPrefix(); + public File gitPrefix() { + Holder<File> p = gitPrefix; + if (p == null) { + p = new Holder<File>(discoverGitPrefix()); + gitPrefix = p; + } + return p.value; + } + + /** @return the $prefix directory C Git would use. */ + protected abstract File discoverGitPrefix(); + + /** + * Set the $prefix directory C Git uses. + * + * @param path + * the directory. Null if C Git is not installed. + * @return {@code this} + */ + public FS setGitPrefix(File path) { + gitPrefix = new Holder<File>(path); + return this; + } /** * Initialize a ProcesssBuilder to run a command using the system shell. @@ -273,4 +297,12 @@ public abstract class FS { * populating directory, environment, and then start the process. */ public abstract ProcessBuilder runInShell(String cmd, String[] args); + + private static class Holder<V> { + final V value; + + Holder(V value) { + this.value = value; + } + } } |