On Mon, Jun 19, 2017 at 2:50 PM, Prathamesh Chavan <pc44800@xxxxxxxxx> wrote:
> The mechanism used for porting the submodule subcommand 'sync' is
> similar to that of 'foreach', where we split the function cmd_sync
> from shell into three functions in C, module_sync,
> for_each_submodule_list and sync_submodule.
>
> print_default_remote is introduced as a submodule--helper
> subcommand for getting the default remote as stdout.
>
> Mentored-by: Christian Couder <christian.couder@xxxxxxxxx>
> Mentored-by: Stefan Beller <sbeller@xxxxxxxxxx>
> Signed-off-by: Prathamesh Chavan <pc44800@xxxxxxxxx>
> ---
Up to this patch, all other patches look good to me,
here I stumbled upon a small nit.
> builtin/submodule--helper.c | 180 ++++++++++++++++++++++++++++++++++++++++++++
> git-submodule.sh | 56 +-------------
> 2 files changed, 181 insertions(+), 55 deletions(-)
>
> diff --git a/builtin/submodule--helper.c b/builtin/submodule--helper.c
> index 78b21ab22..e10cac462 100644
> --- a/builtin/submodule--helper.c
> +++ b/builtin/submodule--helper.c
> @@ -43,6 +43,20 @@ static char *get_default_remote(void)
> return ret;
> }
>
> +static int print_default_remote(int argc, const char **argv, const char *prefix)
> +{
> + const char *remote;
> +
> + if (argc != 1)
> + die(_("submodule--helper print-default-remote takes no arguments"));
> +
> + remote = get_default_remote();
> + if (remote)
> + puts(remote);
> +
> + return 0;
> +}
> +
> static int starts_with_dot_slash(const char *str)
> {
> return str[0] == '.' && is_dir_sep(str[1]);
> @@ -311,6 +325,25 @@ static int print_name_rev(int argc, const char **argv, const char *prefix)
> return 0;
> }
>
> +static char *get_up_path(const char *path)
> +{
> + int i = count_slashes(path);
> + struct strbuf sb = STRBUF_INIT;
> +
> + while (i--)
> + strbuf_addstr(&sb, "../");
> +
> + /*
> + *Check if 'path' ends with slash or not
> + *for having the same output for dir/sub_dir
> + *and dir/sub_dir/
> + */
> + if (!is_dir_sep(path[i - 1]))
> + strbuf_addstr(&sb, "../");
> +
> + return strbuf_detach(&sb, NULL);
> +}
> +
> struct module_list {
> const struct cache_entry **entries;
> int alloc, nr;
> @@ -736,6 +769,151 @@ static int module_name(int argc, const char **argv, const char *prefix)
> return 0;
> }
>
> +struct sync_cb {
> + const char *prefix;
> + unsigned int quiet: 1;
> + unsigned int recursive: 1;
> +};
> +#define SYNC_CB_INIT { NULL, 0, 0 }
> +
> +static void sync_submodule(const struct cache_entry *list_item, void *cb_data)
> +{
> + struct sync_cb *info = cb_data;
> + const struct submodule *sub;
> + char *sub_key, *remote_key;
> + char *url, *sub_origin_url, *super_config_url, *displaypath;
> + struct strbuf sb = STRBUF_INIT;
> + struct child_process cp = CHILD_PROCESS_INIT;
> +
> + if (!is_submodule_initialized(list_item->name))
> + return;
> +
> + sub = submodule_from_path(null_sha1, list_item->name);
> +
> + if (!sub->url)
'sub' can be NULL as well, which when used to obtain the ->url
will crash. So we'd rather want to have (!sub || !sub->url).
I looked through other use cases, others only need (!sub), so this
thought did not hint at other bugs in the code base.
> + die(_("no url found for submodule path '%s' in .gitmodules"),
> + list_item->name);
> +
> + url = xstrdup(sub->url);
Why do we need to duplicate the url here? As we are not modifying it
(read: I did not spot the url modification), we could just use sub->url
instead, saving a variable.
