From f5d0e162c49320d5069a63a05960fc5a38d72423 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ren=C3=A9=20Scharfe?= Date: Thu, 18 Oct 2012 14:02:51 +0200 Subject: branch: factor out check_branch_commit() Move the code to perform checks on the tip commit of a branch to its own function. Signed-off-by: Rene Scharfe Signed-off-by: Junio C Hamano --- builtin/branch.c | 33 +++++++++++++++++++++------------ 1 file changed, 21 insertions(+), 12 deletions(-) diff --git a/builtin/branch.c b/builtin/branch.c index ffd26849c..852019ed8 100644 --- a/builtin/branch.c +++ b/builtin/branch.c @@ -154,10 +154,28 @@ static int branch_merged(int kind, const char *name, return merged; } +static int check_branch_commit(const char *branchname, const char *refname, + unsigned char *sha1, struct commit *head_rev, + int kinds, int force) +{ + struct commit *rev = lookup_commit_reference(sha1); + if (!rev) { + error(_("Couldn't look up commit object for '%s'"), refname); + return -1; + } + if (!force && !branch_merged(kinds, branchname, rev, head_rev)) { + error(_("The branch '%s' is not fully merged.\n" + "If you are sure you want to delete it, " + "run 'git branch -D %s'."), branchname, branchname); + return -1; + } + return 0; +} + static int delete_branches(int argc, const char **argv, int force, int kinds, int quiet) { - struct commit *rev, *head_rev = NULL; + struct commit *head_rev = NULL; unsigned char sha1[20]; char *name = NULL; const char *fmt; @@ -206,17 +224,8 @@ static int delete_branches(int argc, const char **argv, int force, int kinds, continue; } - rev = lookup_commit_reference(sha1); - if (!rev) { - error(_("Couldn't look up commit object for '%s'"), name); - ret = 1; - continue; - } - - if (!force && !branch_merged(kinds, bname.buf, rev, head_rev)) { - error(_("The branch '%s' is not fully merged.\n" - "If you are sure you want to delete it, " - "run 'git branch -D %s'."), bname.buf, bname.buf); + if (check_branch_commit(bname.buf, name, sha1, head_rev, kinds, + force)) { ret = 1; continue; } -- cgit v1.2.1 From 22ed79275360a3dbb480e2c510a94c4b817afad2 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ren=C3=A9=20Scharfe?= Date: Thu, 18 Oct 2012 14:04:08 +0200 Subject: branch: factor out delete_branch_config() Provide a small helper function for deleting branch config sections. Signed-off-by: Rene Scharfe Signed-off-by: Junio C Hamano --- builtin/branch.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) diff --git a/builtin/branch.c b/builtin/branch.c index 852019ed8..97c736115 100644 --- a/builtin/branch.c +++ b/builtin/branch.c @@ -172,6 +172,15 @@ static int check_branch_commit(const char *branchname, const char *refname, return 0; } +static void delete_branch_config(const char *branchname) +{ + struct strbuf buf = STRBUF_INIT; + strbuf_addf(&buf, "branch.%s", branchname); + if (git_config_rename_section(buf.buf, NULL) < 0) + warning(_("Update of config-file failed")); + strbuf_release(&buf); +} + static int delete_branches(int argc, const char **argv, int force, int kinds, int quiet) { @@ -237,17 +246,13 @@ static int delete_branches(int argc, const char **argv, int force, int kinds, bname.buf); ret = 1; } else { - struct strbuf buf = STRBUF_INIT; if (!quiet) printf(remote_branch ? _("Deleted remote branch %s (was %s).\n") : _("Deleted branch %s (was %s).\n"), bname.buf, find_unique_abbrev(sha1, DEFAULT_ABBREV)); - strbuf_addf(&buf, "branch.%s", bname.buf); - if (git_config_rename_section(buf.buf, NULL) < 0) - warning(_("Update of config-file failed")); - strbuf_release(&buf); + delete_branch_config(bname.buf); } } -- cgit v1.2.1 From 566c7707db4eb18a116659b08d6ff7ad79fcfefd Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ren=C3=A9=20Scharfe?= Date: Thu, 18 Oct 2012 14:05:17 +0200 Subject: branch: delete symref branch, not its target If a branch that is to be deleted happens to be a symref to another branch, the current code removes the targeted branch instead of the one it was called for. Change this surprising behaviour and delete the symref branch instead. Signed-off-by: Rene Scharfe Signed-off-by: Junio C Hamano --- builtin/branch.c | 2 +- t/t3200-branch.sh | 11 +++++++++++ 2 files changed, 12 insertions(+), 1 deletion(-) diff --git a/builtin/branch.c b/builtin/branch.c index 97c736115..5e1e5b4d6 100644 --- a/builtin/branch.c +++ b/builtin/branch.c @@ -239,7 +239,7 @@ static int delete_branches(int argc, const char **argv, int force, int kinds, continue; } - if (delete_ref(name, sha1, 0)) { + if (delete_ref(name, sha1, REF_NODEREF)) { error(remote_branch ? _("Error deleting remote branch '%s'") : _("Error deleting branch '%s'"), diff --git a/t/t3200-branch.sh b/t/t3200-branch.sh index 79c8d0142..ec5f70eeb 100755 --- a/t/t3200-branch.sh +++ b/t/t3200-branch.sh @@ -262,6 +262,17 @@ test_expect_success 'config information was renamed, too' \ "test $(git config branch.s.dummy) = Hello && test_must_fail git config branch.s/s/dummy" +test_expect_success 'deleting a symref' ' + git branch target && + git symbolic-ref refs/heads/symref refs/heads/target && + sha1=$(git rev-parse symref | cut -c 1-7) && + echo "Deleted branch symref (was $sha1)." >expect && + git branch -d symref >actual && + test_path_is_file .git/refs/heads/target && + test_path_is_missing .git/refs/heads/symref && + test_i18ncmp expect actual +' + test_expect_success 'renaming a symref is not allowed' \ ' git symbolic-ref refs/heads/master2 refs/heads/master && -- cgit v1.2.1 From 0fe700e311f2d7e55eb23fe941fab9155d7f91df Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ren=C3=A9=20Scharfe?= Date: Thu, 18 Oct 2012 14:07:11 +0200 Subject: branch: skip commit checks when deleting symref branches Before a branch is deleted, we check that it points to a valid commit. With -d we also check that the commit is a merged; this check is not done with -D. The reason for that is that commits pointed to by branches should never go missing; if they do then something broke and it's better to stop instead of adding to the mess. And a non-merged commit may contain changes that are worth preserving, so we require the stronger option -D instead of -d to get rid of them. If a branch consists of a symref, these concerns don't apply. Deleting such a branch can't make a commit become unreferenced, so we don't need to check if it is merged, or even if it is actually a valid commit. Skip them in that case. This allows us to delete dangling symref branches. Signed-off-by: Rene Scharfe Signed-off-by: Junio C Hamano --- builtin/branch.c | 10 ++++++++-- t/t3200-branch.sh | 9 +++++++++ 2 files changed, 17 insertions(+), 2 deletions(-) diff --git a/builtin/branch.c b/builtin/branch.c index 5e1e5b4d6..d87035a2f 100644 --- a/builtin/branch.c +++ b/builtin/branch.c @@ -214,6 +214,9 @@ static int delete_branches(int argc, const char **argv, int force, int kinds, die(_("Couldn't look up commit object for HEAD")); } for (i = 0; i < argc; i++, strbuf_release(&bname)) { + const char *target; + int flags = 0; + strbuf_branchname(&bname, argv[i]); if (kinds == REF_LOCAL_BRANCH && !strcmp(head, bname.buf)) { error(_("Cannot delete the branch '%s' " @@ -225,7 +228,9 @@ static int delete_branches(int argc, const char **argv, int force, int kinds, free(name); name = mkpathdup(fmt, bname.buf); - if (read_ref(name, sha1)) { + target = resolve_ref_unsafe(name, sha1, 0, &flags); + if (!target || + (!(flags & REF_ISSYMREF) && is_null_sha1(sha1))) { error(remote_branch ? _("remote branch '%s' not found.") : _("branch '%s' not found."), bname.buf); @@ -233,7 +238,8 @@ static int delete_branches(int argc, const char **argv, int force, int kinds, continue; } - if (check_branch_commit(bname.buf, name, sha1, head_rev, kinds, + if (!(flags & REF_ISSYMREF) && + check_branch_commit(bname.buf, name, sha1, head_rev, kinds, force)) { ret = 1; continue; diff --git a/t/t3200-branch.sh b/t/t3200-branch.sh index ec5f70eeb..1323f6ff7 100755 --- a/t/t3200-branch.sh +++ b/t/t3200-branch.sh @@ -273,6 +273,15 @@ test_expect_success 'deleting a symref' ' test_i18ncmp expect actual ' +test_expect_success 'deleting a dangling symref' ' + git symbolic-ref refs/heads/dangling-symref nowhere && + test_path_is_file .git/refs/heads/dangling-symref && + echo "Deleted branch dangling-symref (was 0000000)." >expect && + git branch -d dangling-symref >actual && + test_path_is_missing .git/refs/heads/dangling-symref && + test_i18ncmp expect actual +' + test_expect_success 'renaming a symref is not allowed' \ ' git symbolic-ref refs/heads/master2 refs/heads/master && -- cgit v1.2.1 From 13baa9fe866f63311af5a5ee318beddb16eb5df4 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ren=C3=A9=20Scharfe?= Date: Thu, 18 Oct 2012 14:08:03 +0200 Subject: branch: show targets of deleted symrefs, not sha1s git branch reports the abbreviated hash of the head commit of a deleted branch to make it easier for a user to undo the operation. For symref branches this doesn't help. Print the symref target instead for them. Signed-off-by: Rene Scharfe Signed-off-by: Junio C Hamano --- builtin/branch.c | 19 +++++++++++-------- t/t3200-branch.sh | 5 ++--- 2 files changed, 13 insertions(+), 11 deletions(-) diff --git a/builtin/branch.c b/builtin/branch.c index d87035a2f..1ec9c0261 100644 --- a/builtin/branch.c +++ b/builtin/branch.c @@ -251,15 +251,18 @@ static int delete_branches(int argc, const char **argv, int force, int kinds, : _("Error deleting branch '%s'"), bname.buf); ret = 1; - } else { - if (!quiet) - printf(remote_branch - ? _("Deleted remote branch %s (was %s).\n") - : _("Deleted branch %s (was %s).\n"), - bname.buf, - find_unique_abbrev(sha1, DEFAULT_ABBREV)); - delete_branch_config(bname.buf); + continue; + } + if (!quiet) { + printf(remote_branch + ? _("Deleted remote branch %s (was %s).\n") + : _("Deleted branch %s (was %s).\n"), + bname.buf, + (flags & REF_ISSYMREF) + ? target + : find_unique_abbrev(sha1, DEFAULT_ABBREV)); } + delete_branch_config(bname.buf); } free(name); diff --git a/t/t3200-branch.sh b/t/t3200-branch.sh index 1323f6ff7..80e6be39d 100755 --- a/t/t3200-branch.sh +++ b/t/t3200-branch.sh @@ -265,8 +265,7 @@ test_expect_success 'config information was renamed, too' \ test_expect_success 'deleting a symref' ' git branch target && git symbolic-ref refs/heads/symref refs/heads/target && - sha1=$(git rev-parse symref | cut -c 1-7) && - echo "Deleted branch symref (was $sha1)." >expect && + echo "Deleted branch symref (was refs/heads/target)." >expect && git branch -d symref >actual && test_path_is_file .git/refs/heads/target && test_path_is_missing .git/refs/heads/symref && @@ -276,7 +275,7 @@ test_expect_success 'deleting a symref' ' test_expect_success 'deleting a dangling symref' ' git symbolic-ref refs/heads/dangling-symref nowhere && test_path_is_file .git/refs/heads/dangling-symref && - echo "Deleted branch dangling-symref (was 0000000)." >expect && + echo "Deleted branch dangling-symref (was nowhere)." >expect && git branch -d dangling-symref >actual && test_path_is_missing .git/refs/heads/dangling-symref && test_i18ncmp expect actual -- cgit v1.2.1