Add support for getting the system wide configuration

These settings are stored in <prefix>/etc/gitconfig. The C Git
binary is installed in <prefix>/bin, so we look for the C Git
executable to find this location, first by looking at the PATH
environment variable and then by attemting to launch bash as
a login shell to find out.

Bug: 333216
Change-Id: I1bbee9fb123a81714a34a9cc242b92beacfbb4a8
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Robin Rosenberg <robin.rosenberg@dewire.com>

1 files changed, 20 insertions, 0 deletions

diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/util/FS_Win32.java b/org.eclipse.jgit/src/org/eclipse/jgit/util/FS_Win32.java
index 4e35e6ee4b..2cf8bf9554 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/util/FS_Win32.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/util/FS_Win32.java
@@ -45,6 +45,7 @@
 package org.eclipse.jgit.util;
 
 import java.io.File;
+import java.nio.charset.Charset;
 import java.security.AccessController;
 import java.security.PrivilegedAction;
 
@@ -76,4 +77,23 @@ class FS_Win32 extends FS {
 	public boolean retryFailedLockFileCommit() {
 		return true;
 	}
+
+	@Override
+	public File gitPrefix() {
+		String path = SystemReader.getInstance().getenv("PATH");
+		File gitExe = searchPath(path, "git.exe", "git.cmd");
+		if (gitExe != null)
+			return gitExe.getParentFile().getParentFile();
+
+		// This isn't likely to work, if bash is in $PATH, git should
+		// also be in $PATH. But its worth trying.
+		//
+		String w = readPipe(userHome(), //
+				new String[] { "bash", "--login", "-c", "which git" }, //
+				Charset.defaultCharset().name());
+		if (w != null)
+			return new File(w).getParentFile().getParentFile();
+
+		return null;
+	}
 }