Re: [PATCH 2/2] archive.c: add support for --submodules[=(all|checkedout)]

[Johannes Schindelin <Johannes.Schindelin@gmx.de>]

Hi,

On Sun, 25 Jan 2009, Lars Hjemli wrote:

> The --submodules option uses the enhanced read_tree_recursive() to
> enable inclusion of submodules in the generated archive.
> 
> When invoked with `--submodules=all` all gitlink entries will be
> traversed, and when invoked with --submodules=checkedout (the default
> option) only gitlink entries with a git repo (i.e. checked out sub-
> modules) will be traversed.

                               In bare repositories, this means: none.

My reasoning for "*" instead of "all" and "" instead for "checkedout" was 
that you could allow "<name1>,<name2>" at some stage, where <name> would 
first be interpreted as a submodule group, and if that fails, as submodule 
name.

Thinking about that more, "" seems illogical, that should rather mean 
"none", i.e. the same as --no-submodules.  The "checkedout" could be "." 
then, perhaps?  As in "what we have checked out in ./, the current 
directory"?

> When a gitlink has been selected for traversal, it is required that all
> objects necessary to perform this traversal are available in either the
> primary odb or through an alternate odb. To this end, git archive will
> insert the object database of the selected gitlink (when checked out)
> as an alternate odb, using the new function add_alt_odb().

> And since alternates now can be added after parsing of 
> objects/info/alternates, the error message in link_alt_odb_entry() has 
> been updated to not mention this file.

Could you split that part into its own patch again, please?

> @@ -91,6 +92,70 @@ static void setup_archive_check(struct git_attr_check *check)
>  	check[1].attr = attr_export_subst;
>  }
>  
> +static int include_repository(const char *path)
> +{
> +	struct stat st;
> +	const char *tmp;
> +
> +	/* Return early if the path does not exist since it is OK to not
> +	 * checkout submodules.
> +	 */
> +	if (stat(path, &st) && errno == ENOENT)
> +		return 1;
> +
> +	tmp = read_gitfile_gently(path);

This will leak memory, no?

> +	if (tmp) {
> +		path = tmp;
> +		if (stat(path, &st))
> +			die("Unable to stat submodule gitdir %s: %s (%d)",
> +			    path, strerror(errno), errno);
> +	}
> +
> +	if (!S_ISDIR(st.st_mode))
> +		die("Submodule gitdir %s is not a directory", path);
> +
> +	if (add_alt_odb(mkpath("%s/objects", path)))
> +		die("submodule odb %s could not be added as an alternate",
> +		    path);
> +
> +	return 0;
> +}

Ciao,
Dscho