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authorJunio C Hamano <gitster@pobox.com>2011-08-29 04:19:31 (GMT)
committerJunio C Hamano <gitster@pobox.com>2011-08-29 04:19:31 (GMT)
commit1da6d98a9acd2db3902bf432a097771c76f4fd44 (patch)
treecccdbb4533c6998fbba362569906f24c9f4a87cc
parent67c116bb26b4ee31889e5ee15d6a9d3b7e972b7b (diff)
parent587a9ee7da348f5e6696720d770d0e0da597827c (diff)
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Merge branch 'ci/forbid-unwanted-current-branch-update'
* ci/forbid-unwanted-current-branch-update: Show interpreted branch name in error messages Prevent force-updating of the current branch
-rw-r--r--branch.c34
-rw-r--r--branch.h8
-rw-r--r--builtin/branch.c6
-rw-r--r--builtin/checkout.c12
-rwxr-xr-xt/t2018-checkout-branch.sh17
-rwxr-xr-xt/t3200-branch.sh12
6 files changed, 65 insertions, 24 deletions
diff --git a/branch.c b/branch.c
index d62cc01..478d825 100644
--- a/branch.c
+++ b/branch.c
@@ -135,6 +135,26 @@ static int setup_tracking(const char *new_ref, const char *orig_ref,
return 0;
}
+int validate_new_branchname(const char *name, struct strbuf *ref, int force)
+{
+ const char *head;
+ unsigned char sha1[20];
+
+ if (strbuf_check_branch_ref(ref, name))
+ die("'%s' is not a valid branch name.", name);
+
+ if (!ref_exists(ref->buf))
+ return 0;
+ else if (!force)
+ die("A branch named '%s' already exists.", ref->buf + strlen("refs/heads/"));
+
+ head = resolve_ref("HEAD", sha1, 0, NULL);
+ if (!is_bare_repository() && head && !strcmp(head, ref->buf))
+ die("Cannot force update the current branch.");
+
+ return 1;
+}
+
void create_branch(const char *head,
const char *name, const char *start_name,
int force, int reflog, enum branch_track track)
@@ -151,17 +171,11 @@ void create_branch(const char *head,
if (track == BRANCH_TRACK_EXPLICIT || track == BRANCH_TRACK_OVERRIDE)
explicit_tracking = 1;
- if (strbuf_check_branch_ref(&ref, name))
- die("'%s' is not a valid branch name.", name);
-
- if (resolve_ref(ref.buf, sha1, 1, NULL)) {
- if (!force && track == BRANCH_TRACK_OVERRIDE)
+ if (validate_new_branchname(name, &ref, force || track == BRANCH_TRACK_OVERRIDE)) {
+ if (!force)
dont_change_ref = 1;
- else if (!force)
- die("A branch named '%s' already exists.", name);
- else if (!is_bare_repository() && head && !strcmp(head, name))
- die("Cannot force update the current branch.");
- forcing = 1;
+ else
+ forcing = 1;
}
real_ref = NULL;
diff --git a/branch.h b/branch.h
index 4026e38..01544e2 100644
--- a/branch.h
+++ b/branch.h
@@ -16,6 +16,14 @@ void create_branch(const char *head, const char *name, const char *start_name,
int force, int reflog, enum branch_track track);
/*
+ * Validates that the requested branch may be created, returning the
+ * interpreted ref in ref, force indicates whether (non-head) branches
+ * may be overwritten. A non-zero return value indicates that the force
+ * parameter was non-zero and the branch already exists.
+ */
+int validate_new_branchname(const char *name, struct strbuf *ref, int force);
+
+/*
* Remove information about the state of working on the current
* branch. (E.g., MERGE_HEAD)
*/
diff --git a/builtin/branch.c b/builtin/branch.c
index f7da69c..aa705a0 100644
--- a/builtin/branch.c
+++ b/builtin/branch.c
@@ -566,11 +566,7 @@ static void rename_branch(const char *oldname, const char *newname, int force)
die(_("Invalid branch name: '%s'"), oldname);
}
- if (strbuf_check_branch_ref(&newref, newname))
- die(_("Invalid branch name: '%s'"), newname);
-
- if (resolve_ref(newref.buf, sha1, 1, NULL) && !force)
- die(_("A branch named '%s' already exists."), newref.buf + 11);
+ validate_new_branchname(newname, &newref, force);
strbuf_addf(&logmsg, "Branch: renamed %s to %s",
oldref.buf, newref.buf);
diff --git a/builtin/checkout.c b/builtin/checkout.c
index 4eaedff..3bb6525 100644
--- a/builtin/checkout.c
+++ b/builtin/checkout.c
@@ -1072,15 +1072,9 @@ int cmd_checkout(int argc, const char **argv, const char *prefix)
if (opts.new_branch) {
struct strbuf buf = STRBUF_INIT;
- if (strbuf_check_branch_ref(&buf, opts.new_branch))
- die(_("git checkout: we do not like '%s' as a branch name."),
- opts.new_branch);
- if (ref_exists(buf.buf)) {
- opts.branch_exists = 1;
- if (!opts.new_branch_force)
- die(_("git checkout: branch %s already exists"),
- opts.new_branch);
- }
+
+ opts.branch_exists = validate_new_branchname(opts.new_branch, &buf, !!opts.new_branch_force);
+
strbuf_release(&buf);
}
diff --git a/t/t2018-checkout-branch.sh b/t/t2018-checkout-branch.sh
index a42e039..75874e8 100755
--- a/t/t2018-checkout-branch.sh
+++ b/t/t2018-checkout-branch.sh
@@ -118,6 +118,15 @@ test_expect_success 'checkout -b to an existing branch fails' '
test_must_fail do_checkout branch2 $HEAD2
'
+test_expect_success 'checkout -b to @{-1} fails with the right branch name' '
+ git reset --hard HEAD &&
+ git checkout branch1 &&
+ git checkout branch2 &&
+ echo >expect "fatal: A branch named '\''branch1'\'' already exists." &&
+ test_must_fail git checkout -b @{-1} 2>actual &&
+ test_cmp expect actual
+'
+
test_expect_success 'checkout -B to an existing branch resets branch to HEAD' '
git checkout branch1 &&
@@ -180,4 +189,12 @@ test_expect_success 'checkout -b <describe>' '
test_cmp expect actual
'
+test_expect_success 'checkout -B to the current branch fails before merging' '
+ git checkout branch1 &&
+ setup_dirty_mergeable &&
+ git commit -mfooble &&
+ test_must_fail git checkout -B branch1 initial &&
+ test_must_fail test_dirty_mergeable
+'
+
test_done
diff --git a/t/t3200-branch.sh b/t/t3200-branch.sh
index 9e69c8c..cb6458d 100755
--- a/t/t3200-branch.sh
+++ b/t/t3200-branch.sh
@@ -98,6 +98,18 @@ test_expect_success 'git branch -m q r/q should fail when r exists' '
test_must_fail git branch -m q r/q
'
+test_expect_success 'git branch -M foo bar should fail when bar is checked out' '
+ git branch bar &&
+ git checkout -b foo &&
+ test_must_fail git branch -M bar foo
+'
+
+test_expect_success 'git branch -M baz bam should succeed when baz is checked out' '
+ git checkout -b baz &&
+ git branch bam &&
+ git branch -M baz bam
+'
+
mv .git/config .git/config-saved
test_expect_success 'git branch -m q q2 without config should succeed' '