From fb7749e4e4d4d9fef61f35b2f8b40f80c2d5942f Mon Sep 17 00:00:00 2001 From: Jonathan Nieder Date: Sun, 2 May 2010 03:57:12 -0500 Subject: [PATCH] commit --amend: cope with missing display name Though I have not seen this in the wild, it has been said that there are likely to be git repositories converted from other version control systems with an invalid ident line like this one: author 18746342 +0000 Because there is no space between the (empty) user name and the email address, commit --amend chokes. When searching for a space-left-bracket sequence on the ident line, it finds it in the committer line, ending up utterly confused. Better for commit --amend to treat this like a valid ident line with empty username and complain. The tests remove the questionable commit objects after use so there is no chance for them to confuse later tests. Signed-off-by: Jonathan Nieder Signed-off-by: Junio C Hamano --- builtin/commit.c | 20 +++++++++++++------- t/t7509-commit.sh | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 59 insertions(+), 7 deletions(-) diff --git a/builtin/commit.c b/builtin/commit.c index c5ab683d5..58e477409 100644 --- a/builtin/commit.c +++ b/builtin/commit.c @@ -455,15 +455,21 @@ static void determine_author_info(void) if (!a) die("invalid commit: %s", use_message); - lb = strstr(a + 8, " <"); - rb = strstr(a + 8, "> "); - eol = strchr(a + 8, '\n'); - if (!lb || !rb || !eol) + lb = strchrnul(a + strlen("\nauthor "), '<'); + rb = strchrnul(lb, '>'); + eol = strchrnul(rb, '\n'); + if (!*lb || !*rb || !*eol) die("invalid commit: %s", use_message); - name = xstrndup(a + 8, lb - (a + 8)); - email = xstrndup(lb + 2, rb - (lb + 2)); - date = xstrndup(rb + 2, eol - (rb + 2)); + if (lb == a + strlen("\nauthor ")) + /* \nauthor */ + name = xcalloc(1, 1); + else + name = xmemdupz(a + strlen("\nauthor "), + (lb - strlen(" ") - + (a + strlen("\nauthor ")))); + email = xmemdupz(lb + strlen("<"), rb - (lb + strlen("<"))); + date = xmemdupz(rb + strlen("> "), eol - (rb + strlen("> "))); } if (force_author) { diff --git a/t/t7509-commit.sh b/t/t7509-commit.sh index d52c060b0..3ea33db6c 100755 --- a/t/t7509-commit.sh +++ b/t/t7509-commit.sh @@ -83,6 +83,52 @@ test_expect_success '--amend option copies authorship' ' test_cmp expect actual ' +sha1_file() { + echo "$*" | sed "s#..#.git/objects/&/#" +} +remove_object() { + rm -f $(sha1_file "$*") +} +no_reflog() { + cp .git/config .git/config.saved && + echo "[core] logallrefupdates = false" >>.git/config && + test_when_finished "mv -f .git/config.saved .git/config" && + + if test -e .git/logs + then + mv .git/logs . && + test_when_finished "mv logs .git/" + fi +} + +test_expect_success '--amend option with empty author' ' + git cat-file commit Initial >tmp && + sed "s/author [^<]* empty-author && + no_reflog && + sha=$(git hash-object -t commit -w empty-author) && + test_when_finished "remove_object $sha" && + git checkout $sha && + test_when_finished "git checkout Initial" && + echo "Empty author test" >>foo && + test_tick && + ! git commit -a -m "empty author" --amend 2>err && + grep "empty ident" err +' + +test_expect_success '--amend option with missing author' ' + git cat-file commit Initial >tmp && + sed "s/author [^<]* malformed && + no_reflog && + sha=$(git hash-object -t commit -w malformed) && + test_when_finished "remove_object $sha" && + git checkout $sha && + test_when_finished "git checkout Initial" && + echo "Missing author test" >>foo && + test_tick && + ! git commit -a -m "malformed author" --amend 2>err && + grep "empty ident" err +' + test_expect_success '--reset-author makes the commit ours even with --amend option' ' git checkout Initial && echo "Test 6" >>foo && -- 2.26.2