Merge branch 'jc/maint-clone-alternates' into maint
* jc/maint-clone-alternates:
clone: clone from a repository with relative alternates
clone: allow more than one --reference
diff --git a/builtin/clone.c b/builtin/clone.c
index ec57f3d..5f20082 100644
--- a/builtin/clone.c
+++ b/builtin/clone.c
@@ -39,13 +39,23 @@
static int option_no_checkout, option_bare, option_mirror;
static int option_local, option_no_hardlinks, option_shared, option_recursive;
-static char *option_template, *option_reference, *option_depth;
+static char *option_template, *option_depth;
static char *option_origin = NULL;
static char *option_branch = NULL;
static const char *real_git_dir;
static char *option_upload_pack = "git-upload-pack";
static int option_verbosity;
static int option_progress;
+static struct string_list option_reference;
+
+static int opt_parse_reference(const struct option *opt, const char *arg, int unset)
+{
+ struct string_list *option_reference = opt->value;
+ if (!arg)
+ return -1;
+ string_list_append(option_reference, arg);
+ return 0;
+}
static struct option builtin_clone_options[] = {
OPT__VERBOSITY(&option_verbosity),
@@ -71,8 +81,8 @@
"initialize submodules in the clone"),
OPT_STRING(0, "template", &option_template, "template-directory",
"directory from which templates will be used"),
- OPT_STRING(0, "reference", &option_reference, "repo",
- "reference repository"),
+ OPT_CALLBACK(0 , "reference", &option_reference, "repo",
+ "reference repository", &opt_parse_reference),
OPT_STRING('o', "origin", &option_origin, "branch",
"use <branch> instead of 'origin' to track upstream"),
OPT_STRING('b', "branch", &option_branch, "branch",
@@ -214,39 +224,80 @@
*end = '\0';
}
-static void setup_reference(const char *repo)
+static int add_one_reference(struct string_list_item *item, void *cb_data)
{
- const char *ref_git;
- char *ref_git_copy;
-
+ char *ref_git;
+ struct strbuf alternate = STRBUF_INIT;
struct remote *remote;
struct transport *transport;
const struct ref *extra;
- ref_git = real_path(option_reference);
-
- if (is_directory(mkpath("%s/.git/objects", ref_git)))
- ref_git = mkpath("%s/.git", ref_git);
- else if (!is_directory(mkpath("%s/objects", ref_git)))
+ /* Beware: real_path() and mkpath() return static buffer */
+ ref_git = xstrdup(real_path(item->string));
+ if (is_directory(mkpath("%s/.git/objects", ref_git))) {
+ char *ref_git_git = xstrdup(mkpath("%s/.git", ref_git));
+ free(ref_git);
+ ref_git = ref_git_git;
+ } else if (!is_directory(mkpath("%s/objects", ref_git)))
die(_("reference repository '%s' is not a local directory."),
- option_reference);
+ item->string);
- ref_git_copy = xstrdup(ref_git);
+ strbuf_addf(&alternate, "%s/objects", ref_git);
+ add_to_alternates_file(alternate.buf);
+ strbuf_release(&alternate);
- add_to_alternates_file(ref_git_copy);
-
- remote = remote_get(ref_git_copy);
- transport = transport_get(remote, ref_git_copy);
+ remote = remote_get(ref_git);
+ transport = transport_get(remote, ref_git);
for (extra = transport_get_remote_refs(transport); extra;
extra = extra->next)
add_extra_ref(extra->name, extra->old_sha1, 0);
transport_disconnect(transport);
-
- free(ref_git_copy);
+ free(ref_git);
+ return 0;
}
-static void copy_or_link_directory(struct strbuf *src, struct strbuf *dest)
+static void setup_reference(void)
+{
+ for_each_string_list(&option_reference, add_one_reference, NULL);
+}
+
+static void copy_alternates(struct strbuf *src, struct strbuf *dst,
+ const char *src_repo)
+{
+ /*
+ * Read from the source objects/info/alternates file
+ * and copy the entries to corresponding file in the
+ * destination repository with add_to_alternates_file().
+ * Both src and dst have "$path/objects/info/alternates".
+ *
+ * Instead of copying bit-for-bit from the original,
+ * we need to append to existing one so that the already
+ * created entry via "clone -s" is not lost, and also
+ * to turn entries with paths relative to the original
+ * absolute, so that they can be used in the new repository.
+ */
+ FILE *in = fopen(src->buf, "r");
+ struct strbuf line = STRBUF_INIT;
+
+ while (strbuf_getline(&line, in, '\n') != EOF) {
+ char *abs_path, abs_buf[PATH_MAX];
+ if (!line.len || line.buf[0] == '#')
+ continue;
+ if (is_absolute_path(line.buf)) {
+ add_to_alternates_file(line.buf);
+ continue;
+ }
+ abs_path = mkpath("%s/objects/%s", src_repo, line.buf);
+ normalize_path_copy(abs_buf, abs_path);
+ add_to_alternates_file(abs_buf);
+ }
+ strbuf_release(&line);
+ fclose(in);
+}
+
+static void copy_or_link_directory(struct strbuf *src, struct strbuf *dest,
+ const char *src_repo, int src_baselen)
{
struct dirent *de;
struct stat buf;
@@ -282,7 +333,14 @@
}
if (S_ISDIR(buf.st_mode)) {
if (de->d_name[0] != '.')
- copy_or_link_directory(src, dest);
+ copy_or_link_directory(src, dest,
+ src_repo, src_baselen);
+ continue;
+ }
+
+ /* Files that cannot be copied bit-for-bit... */
+ if (!strcmp(src->buf + src_baselen, "/info/alternates")) {
+ copy_alternates(src, dest, src_repo);
continue;
}
@@ -305,17 +363,20 @@
const char *dest_repo)
{
const struct ref *ret;
- struct strbuf src = STRBUF_INIT;
- struct strbuf dest = STRBUF_INIT;
struct remote *remote;
struct transport *transport;
- if (option_shared)
- add_to_alternates_file(src_repo);
- else {
+ if (option_shared) {
+ struct strbuf alt = STRBUF_INIT;
+ strbuf_addf(&alt, "%s/objects", src_repo);
+ add_to_alternates_file(alt.buf);
+ strbuf_release(&alt);
+ } else {
+ struct strbuf src = STRBUF_INIT;
+ struct strbuf dest = STRBUF_INIT;
strbuf_addf(&src, "%s/objects", src_repo);
strbuf_addf(&dest, "%s/objects", dest_repo);
- copy_or_link_directory(&src, &dest);
+ copy_or_link_directory(&src, &dest, src_repo, src.len);
strbuf_release(&src);
strbuf_release(&dest);
}
@@ -538,8 +599,8 @@
git_config_set(key.buf, repo);
strbuf_reset(&key);
- if (option_reference)
- setup_reference(git_dir);
+ if (option_reference.nr)
+ setup_reference();
fetch_pattern = value.buf;
refspec = parse_fetch_refspec(1, &fetch_pattern);
diff --git a/sha1_file.c b/sha1_file.c
index 92e87ee..32268d1 100644
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -380,7 +380,7 @@
{
struct lock_file *lock = xcalloc(1, sizeof(struct lock_file));
int fd = hold_lock_file_for_append(lock, git_path("objects/info/alternates"), LOCK_DIE_ON_ERROR);
- char *alt = mkpath("%s/objects\n", reference);
+ char *alt = mkpath("%s\n", reference);
write_or_die(fd, alt, strlen(alt));
if (commit_lock_file(lock))
die("could not close alternates file");
diff --git a/t/t5601-clone.sh b/t/t5601-clone.sh
index 501bd3f..e810314 100755
--- a/t/t5601-clone.sh
+++ b/t/t5601-clone.sh
@@ -211,4 +211,27 @@
test_must_fail git clone --separate-git-dir realgitdir src dst
'
+test_expect_success 'clone --reference from original' '
+ git clone --shared --bare src src-1 &&
+ git clone --bare src src-2 &&
+ git clone --reference=src-2 --bare src-1 target-8 &&
+ grep /src-2/ target-8/objects/info/alternates
+'
+
+test_expect_success 'clone with more than one --reference' '
+ git clone --bare src src-3 &&
+ git clone --bare src src-4 &&
+ git clone --reference=src-3 --reference=src-4 src target-9 &&
+ grep /src-3/ target-9/.git/objects/info/alternates &&
+ grep /src-4/ target-9/.git/objects/info/alternates
+'
+
+test_expect_success 'clone from original with relative alternate' '
+ mkdir nest &&
+ git clone --bare src nest/src-5 &&
+ echo ../../../src/.git/objects >nest/src-5/objects/info/alternates &&
+ git clone --bare nest/src-5 target-10 &&
+ grep /src/\\.git/objects target-10/objects/info/alternates
+'
+
test_done
