This reimplements the helper function `module_clone` in shell
in C as `clone`. This functionality is needed for converting
`git submodule update` later on, which we want to add threading
to.
Signed-off-by: Stefan Beller <sbeller@xxxxxxxxxx>
---
builtin/submodule--helper.c | 136 ++++++++++++++++++++++++++++++++++++++++++++
git-submodule.sh | 80 +-------------------------
2 files changed, 139 insertions(+), 77 deletions(-)
diff --git a/builtin/submodule--helper.c b/builtin/submodule--helper.c
index f989319..4e30d8e 100644
--- a/builtin/submodule--helper.c
+++ b/builtin/submodule--helper.c
@@ -8,6 +8,7 @@
#include "submodule.h"
#include "submodule-config.h"
#include "string-list.h"
+#include "run-command.h"
static const struct cache_entry **ce_entries;
static int ce_alloc, ce_used;
@@ -119,6 +120,140 @@ static int module_name(int argc, const char **argv, const char *prefix)
return 0;
}
+static int clone_submodule(const char *path, const char *gitdir, const char *url,
+ const char *depth, const char *reference, int quiet)
+{
+ struct child_process cp;
+ child_process_init(&cp);
+
+ argv_array_push(&cp.args, "clone");
+ argv_array_push(&cp.args, "--no-checkout");
+ if (quiet)
+ argv_array_push(&cp.args, "--quiet");
+ if (depth && *depth)
+ argv_array_pushl(&cp.args, "--depth", depth, NULL);
+ if (reference && *reference)
+ argv_array_pushl(&cp.args, "--reference", reference, NULL);
+ if (gitdir && *gitdir)
+ argv_array_pushl(&cp.args, "--separate-git-dir", gitdir, NULL);
+
+ argv_array_push(&cp.args, url);
+ argv_array_push(&cp.args, path);
+
+ cp.git_cmd = 1;
+ cp.env = local_repo_env;
+
+ cp.no_stdin = 1;
+ cp.no_stdout = 1;
+ cp.no_stderr = 1;
+
+ return run_command(&cp);
+}
+
+static int module_clone(int argc, const char **argv, const char *prefix)
+{
+ const char *path = NULL, *name = NULL, *url = NULL;
+ const char *reference = NULL, *depth = NULL;
+ int quiet = 0;
+ FILE *submodule_dot_git;
+ char *sm_gitdir, *cwd, *p;
+ struct strbuf rel_path = STRBUF_INIT;
+ struct strbuf sb = STRBUF_INIT;
+
+ struct option module_clone_options[] = {
+ OPT_STRING(0, "prefix", &prefix,
+ N_("path"),
+ N_("alternative anchor for relative paths")),
+ OPT_STRING(0, "path", &path,
+ N_("path"),
+ N_("where the new submodule will be cloned to")),
+ OPT_STRING(0, "name", &name,
+ N_("string"),
+ N_("name of the new submodule")),
+ OPT_STRING(0, "url", &url,
+ N_("string"),
+ N_("url where to clone the submodule from")),
+ OPT_STRING(0, "reference", &reference,
+ N_("string"),
+ N_("reference repository")),
+ OPT_STRING(0, "depth", &depth,
+ N_("string"),
+ N_("depth for shallow clones")),
+ OPT__QUIET(&quiet, "Suppress output for cloning a submodule"),
+ OPT_END()
+ };
+
+ const char *const git_submodule_helper_usage[] = {
+ N_("git submodule--helper clone [--prefix=<path>] [--quiet] "
+ "[--reference <repository>] [--name <name>] [--url <url>]"
+ "[--depth <depth>] [--] [<path>...]"),
+ NULL
+ };
+
+ argc = parse_options(argc, argv, prefix, module_clone_options,
+ git_submodule_helper_usage, 0);
+
+ strbuf_addf(&sb, "%s/modules/%s", get_git_dir(), name);
+ sm_gitdir = strbuf_detach(&sb, NULL);
+
+ if (!file_exists(sm_gitdir)) {
+ if (safe_create_leading_directories_const(sm_gitdir) < 0)
+ die(_("could not create directory '%s'"), sm_gitdir);
+ if (clone_submodule(path, sm_gitdir, url, depth, reference, quiet))
+ die(_("clone of '%s' into submodule path '%s' failed"),
+ url, path);
+ } else {
+ if (safe_create_leading_directories_const(path) < 0)
+ die(_("could not create directory '%s'"), path);
+ strbuf_addf(&sb, "%s/index", sm_gitdir);
+ if (unlink(sb.buf) < 0)
+ die_errno(_("failed to delete '%s'"), sm_gitdir);
+ strbuf_reset(&sb);
+ }
+
+ /* Write a .git file in the submodule to redirect to the superproject. */
+ if (safe_create_leading_directories_const(path) < 0)
+ die(_("could not create directory '%s'"), path);
+
+ if (path && *path)
+ strbuf_addf(&sb, "%s/.git", path);
+ else
+ strbuf_addf(&sb, ".git");
+
+ if (safe_create_leading_directories_const(sb.buf) < 0)
+ die(_("could not create leading directories of '%s'"), sb.buf);
+ submodule_dot_git = fopen(sb.buf, "w");
+ if (!submodule_dot_git)
+ die_errno(_("cannot open file '%s'"), sb.buf);
+
+ fprintf(submodule_dot_git, "gitdir: %s\n",
+ relative_path(sm_gitdir, path, &rel_path));
+ if (fclose(submodule_dot_git))
+ die(_("could not close file %s"), sb.buf);
+ strbuf_reset(&sb);
+ strbuf_reset(&rel_path);
+
+ cwd = xgetcwd();
+ /* Redirect the worktree of the submodule in the superproject's config */
+ if (!is_absolute_path(sm_gitdir)) {
+ strbuf_addf(&sb, "%s/%s", cwd, sm_gitdir);
+ free(sm_gitdir);
+ sm_gitdir = strbuf_detach(&sb, NULL);
+ }
+
+ strbuf_addf(&sb, "%s/%s", cwd, path);
+ p = git_pathdup_submodule(path, "config");
+ if (!p)
+ die(_("could not get submodule directory for '%s'"), path);
+ git_config_set_in_file(p, "core.worktree",
+ relative_path(sb.buf, sm_gitdir, &rel_path));
+ strbuf_release(&sb);
+ strbuf_release(&rel_path);
+ free(sm_gitdir);
+ free(cwd);
+ free(p);
+ return 0;
+}
struct cmd_struct {
const char *cmd;
@@ -128,6 +263,7 @@ struct cmd_struct {
static struct cmd_struct commands[] = {
{"list", module_list},
{"name", module_name},
+ {"clone", module_clone},
};
int cmd_submodule__helper(int argc, const char **argv, const char *prefix)
diff --git a/git-submodule.sh b/git-submodule.sh
index 2be8da2..7cfdc2c 100755
--- a/git-submodule.sh
+++ b/git-submodule.sh
@@ -178,80 +178,6 @@ get_submodule_config () {
printf '%s' "${value:-$default}"
}
-#
-# Clone a submodule
-#
-# $1 = submodule path
-# $2 = submodule name
-# $3 = URL to clone
-# $4 = reference repository to reuse (empty for independent)
-# $5 = depth argument for shallow clones (empty for deep)
-#
-# Prior to calling, cmd_update checks that a possibly existing
-# path is not a git repository.
-# Likewise, cmd_add checks that path does not exist at all,
-# since it is the location of a new submodule.
-#
-module_clone()
-{
- sm_path=$1
- name=$2
- url=$3
- reference="$4"
- depth="$5"
- quiet=
- if test -n "$GIT_QUIET"
- then
- quiet=-q
- fi
-
- gitdir=
- gitdir_base=
- base_name=$(dirname "$name")
-
- gitdir=$(git rev-parse --git-dir)
- gitdir_base="$gitdir/modules/$base_name"
- gitdir="$gitdir/modules/$name"
-
- if test -d "$gitdir"
- then
- mkdir -p "$sm_path"
- rm -f "$gitdir/index"
- else
- mkdir -p "$gitdir_base"
- (
- clear_local_git_env
- git clone $quiet ${depth:+"$depth"} -n ${reference:+"$reference"} \
- --separate-git-dir "$gitdir" "$url" "$sm_path"
- ) ||
- die "$(eval_gettext "Clone of '\$url' into submodule path '\$sm_path' failed")"
- fi
-
- # We already are at the root of the work tree but cd_to_toplevel will
- # resolve any symlinks that might be present in $PWD
- a=$(cd_to_toplevel && cd "$gitdir" && pwd)/
- b=$(cd_to_toplevel && cd "$sm_path" && pwd)/
- # Remove all common leading directories after a sanity check
- if test "${a#$b}" != "$a" || test "${b#$a}" != "$b"; then
- die "$(eval_gettext "Gitdir '\$a' is part of the submodule path '\$b' or vice versa")"
- fi
- while test "${a%%/*}" = "${b%%/*}"
- do
- a=${a#*/}
- b=${b#*/}
- done
- # Now chop off the trailing '/'s that were added in the beginning
- a=${a%/}
- b=${b%/}
-
- # Turn each leading "*/" component into "../"
- rel=$(printf '%s\n' "$b" | sed -e 's|[^/][^/]*|..|g')
- printf '%s\n' "gitdir: $rel/$a" >"$sm_path/.git"
-
- rel=$(printf '%s\n' "$a" | sed -e 's|[^/][^/]*|..|g')
- (clear_local_git_env; cd "$sm_path" && GIT_WORK_TREE=. git config core.worktree "$rel/$b")
-}
-
isnumber()
{
n=$(($1 + 0)) 2>/dev/null && test "$n" = "$1"
@@ -301,7 +227,7 @@ cmd_add()
shift
;;
--depth=*)
- depth=$1
+ depth="$1"
;;
--)
shift
@@ -412,7 +338,7 @@ Use -f if you really want to add it." >&2
echo "$(eval_gettext "Reactivating local git directory for submodule '\$sm_name'.")"
fi
fi
- module_clone "$sm_path" "$sm_name" "$realrepo" "$reference" "$depth" || exit
+ git submodule--helper clone ${GIT_QUIET:+--quiet} --prefix "$wt_prefix" --path "$sm_path" --name "$sm_name" --url "$realrepo" "$reference" "$depth" || exit
(
clear_local_git_env
cd "$sm_path" &&
@@ -774,7 +700,7 @@ Maybe you want to use 'update --init'?")"
if ! test -d "$sm_path"/.git && ! test -f "$sm_path"/.git
then
- module_clone "$sm_path" "$name" "$url" "$reference" "$depth" || exit
+ git submodule--helper clone ${GIT_QUIET:+--quiet} --prefix "$prefix" --path "$sm_path" --name "$name" --url "$url" "$reference" "$depth" || exit
cloned_modules="$cloned_modules;$name"
subsha1=
else
--
2.5.0.256.g89f8063.dirty
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