git-p4: support git worktrees

git-p4 would attempt to find the git directory using
its own specific code, which did not know about git
worktrees.

Rework it to use "git rev-parse --git-dir" instead.

Add test cases for worktree usage and specifying
git directory via --git-dir and $GIT_DIR.

Signed-off-by: Luke Diamand <luke@diamand.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/git-p4.py b/git-p4.py
index fd5ca524626c40823371422e52a3457fd1d45579..6a1f65f4efe6ba44c4b6abced22a7d6577b9f071 100755 (executable)
--- a/git-p4.py
+++ b/git-p4.py
@@ -85,6 +85,16 @@ def p4_build_cmd(cmd):
         real_cmd += cmd
     return real_cmd
 
+def git_dir(path):
+    """ Return TRUE if the given path is a git directory (/path/to/dir/.git).
+        This won't automatically add ".git" to a directory.
+    """
+    d = read_pipe(["git", "--git-dir", path, "rev-parse", "--git-dir"], True).strip()
+    if not d or len(d) == 0:
+        return None
+    else:
+        return d
+
 def chdir(path, is_client_path=False):
     """Do chdir to the given path, and set the PWD environment
        variable for use by P4.  It does not look at getcwd() output.
@@ -563,10 +573,7 @@ def currentGitBranch():
         return read_pipe(["git", "name-rev", "HEAD"]).split(" ")[1].strip()
 
 def isValidGitDir(path):
-    if (os.path.exists(path + "/HEAD")
-        and os.path.exists(path + "/refs") and os.path.exists(path + "/objects")):
-        return True;
-    return False
+    return git_dir(path) != None
 
 def parseRevision(ref):
     return read_pipe("git rev-parse %s" % ref).strip()
@@ -3682,6 +3689,7 @@ def main():
         if cmd.gitdir == None:
             cmd.gitdir = os.path.abspath(".git")
             if not isValidGitDir(cmd.gitdir):
+                # "rev-parse --git-dir" without arguments will try $PWD/.git
                 cmd.gitdir = read_pipe("git rev-parse --git-dir").strip()
                 if os.path.exists(cmd.gitdir):
                     cdup = read_pipe("git rev-parse --show-cdup").strip()
@@ -3694,6 +3702,7 @@ def main():
             else:
                 die("fatal: cannot locate git repository at %s" % cmd.gitdir)
 
+        # so git commands invoked from the P4 workspace will succeed
         os.environ["GIT_DIR"] = cmd.gitdir
 
     if not cmd.run(args):

diff --git a/t/t9800-git-p4-basic.sh b/t/t9800-git-p4-basic.sh
index 0730f18d0f83f4145c5a0dbfde784d71bdc57a1d..093e9bd586da55cc27412422d58551a6830bd1a3 100755 (executable)
--- a/t/t9800-git-p4-basic.sh
+++ b/t/t9800-git-p4-basic.sh
@@ -257,6 +257,26 @@ test_expect_success 'submit from detached head' '
        )
 '
 
+test_expect_success 'submit from worktree' '
+       test_when_finished cleanup_git &&
+       git p4 clone --dest="$git" //depot &&
+       (
+               cd "$git" &&
+               git worktree add ../worktree-test
+       ) &&
+       (
+               cd "$git/../worktree-test" &&
+               test_commit "worktree-commit" &&
+               git config git-p4.skipSubmitEdit true &&
+               git p4 submit
+       ) &&
+       (
+               cd "$cli" &&
+               p4 sync &&
+               test_path_is_file worktree-commit.t
+       )
+'
+
 test_expect_success 'kill p4d' '
        kill_p4d
 '

diff --git a/t/t9806-git-p4-options.sh b/t/t9806-git-p4-options.sh
index 254d428b73fe4983298f57e0d87405002abdfbc2..1ab76c4246f215cfc0082bdbfd090e1622362140 100755 (executable)
--- a/t/t9806-git-p4-options.sh
+++ b/t/t9806-git-p4-options.sh
@@ -269,6 +269,38 @@ test_expect_success 'submit works with two branches' '
        )
 '
 
+test_expect_success 'use --git-dir option and GIT_DIR' '
+       test_when_finished cleanup_git &&
+       git p4 clone //depot --destination="$git" &&
+       (
+               cd "$git" &&
+               git config git-p4.skipSubmitEdit true &&
+               test_commit first-change &&
+               git p4 submit --git-dir "$git"
+       ) &&
+       (
+               cd "$cli" &&
+               p4 sync &&
+               test_path_is_file first-change.t &&
+               echo "cli_file" >cli_file.t &&
+               p4 add cli_file.t &&
+               p4 submit -d "cli change"
+       ) &&
+       (git --git-dir "$git" p4 sync) &&
+       (cd "$git" && git checkout -q p4/master) &&
+       test_path_is_file "$git"/cli_file.t &&
+       (
+               cd "$cli" &&
+               echo "cli_file2" >cli_file2.t &&
+               p4 add cli_file2.t  &&
+               p4 submit -d "cli change2"
+       ) &&
+       (GIT_DIR="$git" git p4 sync) &&
+       (cd "$git" && git checkout -q p4/master) &&
+       test_path_is_file "$git"/cli_file2.t
+'
+
+
 test_expect_success 'kill p4d' '
        kill_p4d
 '