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authorSven Verdoolaege <skimo@kotnet.org>2007-08-15 19:22:09 +0200
committerJunio C Hamano <gitster@pobox.com>2007-08-15 21:39:07 -0700
commite06c5a6c7bdaa8c96b72e29f7fb49a331f1e0cc2 (patch)
tree0e2bd1bc594b9f1b8787bdd6b7a8f18b770ada4f /builtin-apply.c
parentda899deb24ff66ec2166389516a915c01bf0a387 (diff)
downloadgit-e06c5a6c7bdaa8c96b72e29f7fb49a331f1e0cc2.tar.gz
git-apply: apply submodule changes
Apply "Subproject commit HEX" changes produced by git-diff. As usual in the current git, only the superproject itself is actually modified (possibly creating empty directories for new submodules). Any checked-out submodule is left untouched and is not required to be up-to-date. With clean-ups from Junio C Hamano. Signed-off-by: Sven Verdoolaege <skimo@kotnet.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'builtin-apply.c')
-rw-r--r--builtin-apply.c111
1 files changed, 86 insertions, 25 deletions
diff --git a/builtin-apply.c b/builtin-apply.c
index da270755a7..25b1447901 100644
--- a/builtin-apply.c
+++ b/builtin-apply.c
@@ -1984,6 +1984,25 @@ static int apply_fragments(struct buffer_desc *desc, struct patch *patch)
return 0;
}
+static int read_file_or_gitlink(struct cache_entry *ce, char **buf_p,
+ unsigned long *size_p)
+{
+ if (!ce)
+ return 0;
+
+ if (S_ISGITLINK(ntohl(ce->ce_mode))) {
+ *buf_p = xmalloc(100);
+ *size_p = snprintf(*buf_p, 100,
+ "Subproject commit %s\n", sha1_to_hex(ce->sha1));
+ } else {
+ enum object_type type;
+ *buf_p = read_sha1_file(ce->sha1, &type, size_p);
+ if (!*buf_p)
+ return -1;
+ }
+ return 0;
+}
+
static int apply_data(struct patch *patch, struct stat *st, struct cache_entry *ce)
{
char *buf;
@@ -1994,22 +2013,32 @@ static int apply_data(struct patch *patch, struct stat *st, struct cache_entry *
alloc = 0;
buf = NULL;
if (cached) {
- if (ce) {
- enum object_type type;
- buf = read_sha1_file(ce->sha1, &type, &size);
- if (!buf)
+ if (read_file_or_gitlink(ce, &buf, &size))
+ return error("read of %s failed", patch->old_name);
+ alloc = size;
+ } else if (patch->old_name) {
+ if (S_ISGITLINK(patch->old_mode)) {
+ if (ce)
+ read_file_or_gitlink(ce, &buf, &size);
+ else {
+ /*
+ * There is no way to apply subproject
+ * patch without looking at the index.
+ */
+ patch->fragments = NULL;
+ size = 0;
+ }
+ }
+ else {
+ size = xsize_t(st->st_size);
+ alloc = size + 8192;
+ buf = xmalloc(alloc);
+ if (read_old_data(st, patch->old_name,
+ &buf, &alloc, &size))
return error("read of %s failed",
patch->old_name);
- alloc = size;
}
}
- else if (patch->old_name) {
- size = xsize_t(st->st_size);
- alloc = size + 8192;
- buf = xmalloc(alloc);
- if (read_old_data(st, patch->old_name, &buf, &alloc, &size))
- return error("read of %s failed", patch->old_name);
- }
desc.size = size;
desc.alloc = alloc;
@@ -2055,6 +2084,16 @@ static int check_to_create_blob(const char *new_name, int ok_if_exists)
return 0;
}
+static int verify_index_match(struct cache_entry *ce, struct stat *st)
+{
+ if (S_ISGITLINK(ntohl(ce->ce_mode))) {
+ if (!S_ISDIR(st->st_mode))
+ return -1;
+ return 0;
+ }
+ return ce_match_stat(ce, st, 1);
+}
+
static int check_patch(struct patch *patch, struct patch *prev_patch)
{
struct stat st;
@@ -2065,8 +2104,14 @@ static int check_patch(struct patch *patch, struct patch *prev_patch)
int ok_if_exists;
patch->rejected = 1; /* we will drop this after we succeed */
+
+ /*
+ * Make sure that we do not have local modifications from the
+ * index when we are looking at the index. Also make sure
+ * we have the preimage file to be patched in the work tree,
+ * unless --cached, which tells git to apply only in the index.
+ */
if (old_name) {
- int changed = 0;
int stat_ret = 0;
unsigned st_mode = 0;
@@ -2096,15 +2141,12 @@ static int check_patch(struct patch *patch, struct patch *prev_patch)
lstat(old_name, &st))
return -1;
}
- if (!cached)
- changed = ce_match_stat(ce, &st, 1);
- if (changed)
+ if (!cached && verify_index_match(ce, &st))
return error("%s: does not match index",
old_name);
if (cached)
st_mode = ntohl(ce->ce_mode);
- }
- else if (stat_ret < 0)
+ } else if (stat_ret < 0)
return error("%s: %s", old_name, strerror(errno));
if (!cached)
@@ -2354,7 +2396,11 @@ static void remove_file(struct patch *patch, int rmdir_empty)
cache_tree_invalidate_path(active_cache_tree, patch->old_name);
}
if (!cached) {
- if (!unlink(patch->old_name) && rmdir_empty) {
+ if (S_ISGITLINK(patch->old_mode)) {
+ if (rmdir(patch->old_name))
+ warning("unable to remove submodule %s",
+ patch->old_name);
+ } else if (!unlink(patch->old_name) && rmdir_empty) {
char *name = xstrdup(patch->old_name);
char *end = strrchr(name, '/');
while (end) {
@@ -2382,13 +2428,21 @@ static void add_index_file(const char *path, unsigned mode, void *buf, unsigned
memcpy(ce->name, path, namelen);
ce->ce_mode = create_ce_mode(mode);
ce->ce_flags = htons(namelen);
- if (!cached) {
- if (lstat(path, &st) < 0)
- die("unable to stat newly created file %s", path);
- fill_stat_cache_info(ce, &st);
+ if (S_ISGITLINK(mode)) {
+ const char *s = buf;
+
+ if (get_sha1_hex(s + strlen("Subproject commit "), ce->sha1))
+ die("corrupt patch for subproject %s", path);
+ } else {
+ if (!cached) {
+ if (lstat(path, &st) < 0)
+ die("unable to stat newly created file %s",
+ path);
+ fill_stat_cache_info(ce, &st);
+ }
+ if (write_sha1_file(buf, size, blob_type, ce->sha1) < 0)
+ die("unable to create backing store for newly created file %s", path);
}
- if (write_sha1_file(buf, size, blob_type, ce->sha1) < 0)
- die("unable to create backing store for newly created file %s", path);
if (add_cache_entry(ce, ADD_CACHE_OK_TO_ADD) < 0)
die("unable to add cache entry for %s", path);
}
@@ -2398,6 +2452,13 @@ static int try_create_file(const char *path, unsigned int mode, const char *buf,
int fd;
char *nbuf;
+ if (S_ISGITLINK(mode)) {
+ struct stat st;
+ if (!lstat(path, &st) && S_ISDIR(st.st_mode))
+ return 0;
+ return mkdir(path, 0777);
+ }
+
if (has_symlinks && S_ISLNK(mode))
/* Although buf:size is counted string, it also is NUL
* terminated.