submodule: port submodule subcommand 'foreach' from shell to C
This aims to make git-submodule foreach a builtin. 'foreach' is ported to the submodule--helper, and submodule--helper is called from git-submodule.sh. Helped-by: Brandon Williams <bmwill@google.com> Mentored-by: Christian Couder <christian.couder@gmail.com> Mentored-by: Stefan Beller <sbeller@google.com> Signed-off-by: Prathamesh Chavan <pc44800@gmail.com> Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>maint
Prathamesh Chavan
Junio C Hamano
parent
b6f7ac8fd5
commit
fc1b9243cd
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@ -439,6 +439,149 @@ static void for_each_listed_submodule(const struct module_list *list,
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fn(list->entries[i], cb_data);
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}
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struct cb_foreach {
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int argc;
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const char **argv;
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const char *prefix;
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int quiet;
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int recursive;
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};
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#define CB_FOREACH_INIT { 0 }
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static void runcommand_in_submodule_cb(const struct cache_entry *list_item,
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void *cb_data)
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{
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struct cb_foreach *info = cb_data;
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const char *path = list_item->name;
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const struct object_id *ce_oid = &list_item->oid;
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const struct submodule *sub;
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struct child_process cp = CHILD_PROCESS_INIT;
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char *displaypath;
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displaypath = get_submodule_displaypath(path, info->prefix);
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sub = submodule_from_path(the_repository, &null_oid, path);
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if (!sub)
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die(_("No url found for submodule path '%s' in .gitmodules"),
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displaypath);
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if (!is_submodule_populated_gently(path, NULL))
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goto cleanup;
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prepare_submodule_repo_env(&cp.env_array);
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/*
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* For the purpose of executing <command> in the submodule,
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* separate shell is used for the purpose of running the
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* child process.
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*/
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cp.use_shell = 1;
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cp.dir = path;
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/*
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* NEEDSWORK: the command currently has access to the variables $name,
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* $sm_path, $displaypath, $sha1 and $toplevel only when the command
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* contains a single argument. This is done for maintaining a faithful
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* translation from shell script.
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*/
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if (info->argc == 1) {
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char *toplevel = xgetcwd();
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struct strbuf sb = STRBUF_INIT;
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argv_array_pushf(&cp.env_array, "name=%s", sub->name);
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argv_array_pushf(&cp.env_array, "sm_path=%s", path);
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argv_array_pushf(&cp.env_array, "displaypath=%s", displaypath);
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argv_array_pushf(&cp.env_array, "sha1=%s",
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oid_to_hex(ce_oid));
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argv_array_pushf(&cp.env_array, "toplevel=%s", toplevel);
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/*
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* Since the path variable was accessible from the script
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* before porting, it is also made available after porting.
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* The environment variable "PATH" has a very special purpose
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* on windows. And since environment variables are
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* case-insensitive in windows, it interferes with the
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* existing PATH variable. Hence, to avoid that, we expose
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* path via the args argv_array and not via env_array.
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*/
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sq_quote_buf(&sb, path);
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argv_array_pushf(&cp.args, "path=%s; %s",
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sb.buf, info->argv[0]);
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strbuf_release(&sb);
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free(toplevel);
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} else {
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argv_array_pushv(&cp.args, info->argv);
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}
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if (!info->quiet)
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printf(_("Entering '%s'\n"), displaypath);
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if (info->argv[0] && run_command(&cp))
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die(_("run_command returned non-zero status for %s\n."),
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displaypath);
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if (info->recursive) {
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struct child_process cpr = CHILD_PROCESS_INIT;
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cpr.git_cmd = 1;
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cpr.dir = path;
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prepare_submodule_repo_env(&cpr.env_array);
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argv_array_pushl(&cpr.args, "--super-prefix", NULL);
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argv_array_pushf(&cpr.args, "%s/", displaypath);
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argv_array_pushl(&cpr.args, "submodule--helper", "foreach", "--recursive",
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NULL);
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if (info->quiet)
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argv_array_push(&cpr.args, "--quiet");
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argv_array_pushv(&cpr.args, info->argv);
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if (run_command(&cpr))
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die(_("run_command returned non-zero status while"
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"recursing in the nested submodules of %s\n."),
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displaypath);
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}
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cleanup:
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free(displaypath);
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}
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static int module_foreach(int argc, const char **argv, const char *prefix)
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{
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struct cb_foreach info = CB_FOREACH_INIT;
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struct pathspec pathspec;
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struct module_list list = MODULE_LIST_INIT;
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struct option module_foreach_options[] = {
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OPT__QUIET(&info.quiet, N_("Suppress output of entering each submodule command")),
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OPT_BOOL(0, "recursive", &info.recursive,
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N_("Recurse into nested submodules")),
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OPT_END()
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};
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const char *const git_submodule_helper_usage[] = {
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N_("git submodule--helper foreach [--quiet] [--recursive] <command>"),
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NULL
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};
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argc = parse_options(argc, argv, prefix, module_foreach_options,
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git_submodule_helper_usage, PARSE_OPT_KEEP_UNKNOWN);
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if (module_list_compute(0, NULL, prefix, &pathspec, &list) < 0)
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return 1;
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info.argc = argc;
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info.argv = argv;
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info.prefix = prefix;
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for_each_listed_submodule(&list, runcommand_in_submodule_cb, &info);
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return 0;
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}
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struct init_cb {
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const char *prefix;
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unsigned int flags;
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@ -1841,6 +1984,7 @@ static struct cmd_struct commands[] = {
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{"relative-path", resolve_relative_path, 0},
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{"resolve-relative-url", resolve_relative_url, 0},
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{"resolve-relative-url-test", resolve_relative_url_test, 0},
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{"foreach", module_foreach, SUPPORT_SUPER_PREFIX},
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{"init", module_init, SUPPORT_SUPER_PREFIX},
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{"status", module_status, SUPPORT_SUPER_PREFIX},
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{"print-default-remote", print_default_remote, 0},
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@ -323,44 +323,7 @@ cmd_foreach()
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shift
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done
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toplevel=$(pwd)
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# dup stdin so that it can be restored when running the external
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# command in the subshell (and a recursive call to this function)
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exec 3<&0
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{
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git submodule--helper list --prefix "$wt_prefix" ||
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echo "#unmatched" $?
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} |
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while read -r mode sha1 stage sm_path
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do
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die_if_unmatched "$mode" "$sha1"
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if test -e "$sm_path"/.git
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then
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displaypath=$(git submodule--helper relative-path "$prefix$sm_path" "$wt_prefix")
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say "$(eval_gettext "Entering '\$displaypath'")"
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name=$(git submodule--helper name "$sm_path")
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(
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prefix="$prefix$sm_path/"
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sanitize_submodule_env
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cd "$sm_path" &&
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# we make $path available to scripts ...
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path=$sm_path &&
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if test $# -eq 1
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then
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eval "$1"
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else
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"$@"
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fi &&
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if test -n "$recursive"
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then
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cmd_foreach "--recursive" "$@"
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fi
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) <&3 3<&- ||
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die "$(eval_gettext "Stopping at '\$displaypath'; script returned non-zero status.")"
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fi
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done
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git ${wt_prefix:+-C "$wt_prefix"} ${prefix:+--super-prefix "$prefix"} submodule--helper foreach ${GIT_QUIET:+--quiet} ${recursive:+--recursive} "$@"
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}
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#
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