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Teach "git-read-tree -u" to check out submodules as a directory 

This actually allows us to check out a supermodule after cloning, although
the submodules themselves will obviously not be checked out, and will just
be empty directories.

Checking out the submodules will be up to higher levels - we may not even
want to!

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Linus Torvalds 2007-04-13 09:26:04 -07:00 committed by Junio C Hamano
parent 6e2f441bd4
commit f0807e62b4
1 changed files with 32 additions and 13 deletions
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45
entry.c
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@ -62,26 +62,33 @@ static int create_file(const char *path, unsigned int mode)
return open(path, O_WRONLY | O_CREAT | O_EXCL, mode);
}
static void *read_blob_entry(struct cache_entry *ce, const char *path, unsigned long *size)
{
enum object_type type;
void *new = read_sha1_file(ce->sha1, &type, size);
if (new) {
if (type == OBJ_BLOB)
return new;
free(new);
}
return NULL;
}
static int write_entry(struct cache_entry *ce, char *path, struct checkout *state, int to_tempfile)
{
int fd;
void *new;
unsigned long size;
long wrote;
enum object_type type;
new = read_sha1_file(ce->sha1, &type, &size);
if (!new || type != OBJ_BLOB) {
if (new)
free(new);
return error("git-checkout-index: unable to read sha1 file of %s (%s)",
path, sha1_to_hex(ce->sha1));
}
switch (ntohl(ce->ce_mode) & S_IFMT) {
char *buf;
unsigned long nsize;
char *buf, *new;
unsigned long size, nsize;
case S_IFREG:
new = read_blob_entry(ce, path, &size);
if (!new)
return error("git-checkout-index: unable to read sha1 file of %s (%s)",
path, sha1_to_hex(ce->sha1));
if (to_tempfile) {
strcpy(path, ".merge_file_XXXXXX");
fd = mkstemp(path);
@ -111,6 +118,10 @@ static int write_entry(struct cache_entry *ce, char *path, struct checkout *stat
return error("git-checkout-index: unable to write file %s", path);
break;
case S_IFLNK:
new = read_blob_entry(ce, path, &size);
if (!new)
return error("git-checkout-index: unable to read sha1 file of %s (%s)",
path, sha1_to_hex(ce->sha1));
if (to_tempfile || !has_symlinks) {
if (to_tempfile) {
strcpy(path, ".merge_link_XXXXXX");
@ -136,8 +147,13 @@ static int write_entry(struct cache_entry *ce, char *path, struct checkout *stat
"symlink %s (%s)", path, strerror(errno));
}
break;
case S_IFDIRLNK:
if (to_tempfile)
return error("git-checkout-index: cannot create temporary subproject %s", path);
if (mkdir(path, 0777) < 0)
return error("git-checkout-index: cannot create subproject directory %s", path);
break;
default:
free(new);
return error("git-checkout-index: unknown file mode for %s", path);
}
@ -179,6 +195,9 @@ int checkout_entry(struct cache_entry *ce, struct checkout *state, char *topath)
*/
unlink(path);
if (S_ISDIR(st.st_mode)) {
/* If it is a gitlink, leave it alone! */
if (S_ISDIRLNK(ntohl(ce->ce_mode)))
return 0;
if (!state->force)
return error("%s is a directory", path);
remove_subtree(path);