Re: [PATCH v3 0/9] archive: Add --recurse-submodules to git-archive command

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Hi Heather

On 17/10/2022 03:23, Heather Lapointe via GitGitGadget wrote:
This makes it possible to include submodule contents in an archive command.

The inspiration for this change comes from this Github thread,
https://github.com/dear-github/dear-github/issues/214, with at least 160
👍🏻 's at the time of writing. (I stumbled upon it because I wanted it as
well).

I figured the underlying implementation wouldn't be too difficult with most
of the plumbing already in place, so I decided to add the relevant logic to
the client git-archive command.

One of the trickier parts of this implementation involved teaching read_tree
about submodules. Some of the troublesome areas were still using the
the_repository references to look up commit or tree or oid information. I
ended up deciding that read_tree_fn_t would probably be best off having a
concrete repo reference since it allows changing the context to a subrepo
where needed (even though some of the usages did not need it specifically).

I am open to feedback since this is all quite new to me :)

I've had a quick read through and I thought this patch series was well structured and easy to follow for someone like me who is not familiar with the archive code. I've left a few mostly high-level comments on some of the individual patches. The commit messages are all pretty brief and would benefit from a bit more explaintion of why the changes are being made. From a brief read through the code changes themselves all looked pretty good.

Best Wishes

Phillip


Alphadelta14 (1):
   tree: do not use the_repository for tree traversal methods.
>
Heather Lapointe (8):
   tree: update cases to use repo_ tree methods
   tree: increase test coverage for tree.c
   tree: handle submodule case for read_tree_at properly
   tree: add repository parameter to read_tree_fn_t
   archive: pass repo objects to write_archive handlers
   archive: remove global repository from archive_args
   archive: add --recurse-submodules to git-archive command
   archive: add tests for git archive --recurse-submodules

  Documentation/git-archive.txt     |   6 +-
  Makefile                          |   1 +
  archive-tar.c                     |  15 ++--
  archive-zip.c                     |  15 ++--
  archive.c                         | 138 ++++++++++++++++++++----------
  archive.h                         |  16 +++-
  builtin/checkout.c                |   4 +-
  builtin/log.c                     |   4 +-
  builtin/ls-files.c                |   8 +-
  builtin/ls-tree.c                 |  34 +++++---
  merge-recursive.c                 |   4 +-
  merge.c                           |   4 +-
  reset.c                           |   2 +-
  revision.c                        |   4 +-
  sequencer.c                       |   6 +-
  sparse-index.c                    |   4 +-
  t/helper/test-tool.c              |   1 +
  t/helper/test-tool.h              |   1 +
  t/helper/test-tree-read-tree-at.c |  41 +++++++++
  t/t1023-tree-read-tree-at.sh      |  65 ++++++++++++++
  t/t5005-archive-submodules.sh     |  83 ++++++++++++++++++
  tree.c                            |  93 ++++++++++++++------
  tree.h                            |  16 ++--
  wt-status.c                       |   4 +-
  24 files changed, 448 insertions(+), 121 deletions(-)
  create mode 100644 t/helper/test-tree-read-tree-at.c
  create mode 100755 t/t1023-tree-read-tree-at.sh
  create mode 100755 t/t5005-archive-submodules.sh


base-commit: e85701b4af5b7c2a9f3a1b07858703318dce365d
Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-git-1359%2FAlphadelta14%2Farchive-recurse-submodules-v3
Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-git-1359/Alphadelta14/archive-recurse-submodules-v3
Pull-Request: https://github.com/git/git/pull/1359

Range-diff vs v2:

   -:  ----------- >  1:  79959a54eb4 tree: do not use the_repository for tree traversal methods.
   -:  ----------- >  2:  2291e0f9b5c tree: update cases to use repo_ tree methods
   -:  ----------- >  3:  9a07c6932f4 tree: increase test coverage for tree.c
   2:  68f7830c6d9 !  4:  d3d1738e670 archive: fix a case of submodule in submodule traversal
      @@
        ## Metadata ##
      -Author: Alphadelta14 <alpha@alphaservcomputing.solutions>
      +Author: Heather Lapointe <alpha@alphaservcomputing.solutions>
## Commit message ##
      -    archive: fix a case of submodule in submodule traversal
      +    tree: handle submodule case for read_tree_at properly
- repo_submodule_init actually expects the path relative to submodule_prefix.
      -    We preform a simple strip to the correct path.
      +    This supports traversal into an actual submodule for read_tree_at.
      +    The logic is blocked on pathspec->recurse_submodules now,
      +    but previously hadn't been executed due to all fn() cases
      +    returning early for submodules.
- Signed-off-by: Alphadelta14 <alpha@alphaservcomputing.solutions>
      +    Signed-off-by: Heather Lapointe <alpha@alphaservcomputing.solutions>
## tree.c ##
      +@@
      + #include "alloc.h"
      + #include "tree-walk.h"
      + #include "repository.h"
      ++#include "pathspec.h"
      +
      + const char *tree_type = "tree";
      +
       @@ tree.c: int read_tree_at(struct repository *r,
      - 			struct repository subrepo;
      - 			struct repository* subrepo_p = &subrepo;
      - 			struct tree* submodule_tree;
      + 			return -1;
      + 		}
      +
      +-		if (S_ISDIR(entry.mode))
      ++		if (S_ISDIR(entry.mode)) {
      + 			oidcpy(&oid, &entry.oid);
      +-		else if (S_ISGITLINK(entry.mode)) {
      +-			struct commit *commit;
      +
      +-			commit = lookup_commit(r, &entry.oid);
      ++			len = tree_entry_len(&entry);
      ++			strbuf_add(base, entry.path, len);
      ++			strbuf_addch(base, '/');
      ++			retval = read_tree_at(r, lookup_tree(r, &oid),
      ++						base, pathspec,
      ++						fn, context);
      ++			strbuf_setlen(base, oldlen);
      ++			if (retval)
      ++				return -1;
      ++		} else if (pathspec->recurse_submodules && S_ISGITLINK(entry.mode)) {
      ++			struct commit *commit;
      ++			struct repository subrepo;
      ++			struct repository* subrepo_p = &subrepo;
      ++			struct tree* submodule_tree;
       +			char *submodule_rel_path;
       +			int name_base_len = 0;
      -
      --			if (repo_submodule_init(subrepo_p, r, entry.path, null_oid()))
      --				die("couldn't init submodule %s%s", base->buf, entry.path);
      ++
       +			len = tree_entry_len(&entry);
       +			strbuf_add(base, entry.path, len);
       +			submodule_rel_path = base->buf;
      @@ tree.c: int read_tree_at(struct repository *r,
       +
       +			if (repo_submodule_init(subrepo_p, r, submodule_rel_path, null_oid()))
       +				die("couldn't init submodule %s", base->buf);
      -
      - 			if (repo_read_index(subrepo_p) < 0)
      - 				die("index file corrupt");
      -
      - 			commit = lookup_commit(subrepo_p, &entry.oid);
      ++
      ++			if (repo_read_index(subrepo_p) < 0)
      ++				die("index file corrupt");
      ++
      ++			commit = lookup_commit(subrepo_p, &entry.oid);
        			if (!commit)
       -				die("Commit %s in submodule path %s%s not found",
       +				die("Commit %s in submodule path %s not found",
        				    oid_to_hex(&entry.oid),
       -				    base->buf, entry.path);
      -+				    base->buf);
      -
      - 			if (repo_parse_commit(subrepo_p, commit))
      +-
      +-			// FIXME: This is the wrong repo instance (it refers to the superproject)
      +-			// it will always fail as is (will fix in later patch)
      +-			// This current codepath isn't executed by any existing callbacks
      +-			// so it wouldn't show up as an issue at this time.
      +-			if (repo_parse_commit(r, commit))
       -				die("Invalid commit %s in submodule path %s%s",
      ++				    base->buf);
      ++
      ++			if (repo_parse_commit(subrepo_p, commit))
       +				die("Invalid commit %s in submodule path %s",
        				    oid_to_hex(&entry.oid),
       -				    base->buf, entry.path);
       +				    base->buf);
- submodule_tree = repo_get_commit_tree(subrepo_p, commit);
      - 			oidcpy(&oid, submodule_tree ? &submodule_tree->object.oid : NULL);
      +-			oidcpy(&oid, get_commit_tree_oid(commit));
      +-		}
      +-		else
      +-			continue;
      ++			submodule_tree = repo_get_commit_tree(subrepo_p, commit);
      ++			oidcpy(&oid, submodule_tree ? &submodule_tree->object.oid : NULL);
-- len = tree_entry_len(&entry);
      --			strbuf_add(base, entry.path, len);
      - 			strbuf_addch(base, '/');
      +-		len = tree_entry_len(&entry);
      +-		strbuf_add(base, entry.path, len);
      +-		strbuf_addch(base, '/');
      +-		retval = read_tree_at(r, lookup_tree(r, &oid),
      +-				      base, pathspec,
      +-				      fn, context);
      +-		strbuf_setlen(base, oldlen);
      +-		if (retval)
      +-			return -1;
      ++			strbuf_addch(base, '/');
       +
      - 			retval = read_tree_at(subrepo_p, lookup_tree(subrepo_p, &oid),
      - 						base, pathspec,
      - 						fn, context);
      - 			if (retval) {
      --			    die("failed to read tree for %s%s", base->buf, entry.path);
      ++			retval = read_tree_at(subrepo_p, lookup_tree(subrepo_p, &oid),
      ++						base, pathspec,
      ++						fn, context);
      ++			if (retval)
       +			    die("failed to read tree for %s", base->buf);
      - 			    return -1;
      - 			}
      - 			strbuf_setlen(base, oldlen);
      ++			strbuf_setlen(base, oldlen);
      ++			repo_clear(subrepo_p);
      ++		}
      ++		// else, this is a file (or a submodule, but no pathspec->recurse_submodules)
      + 	}
      + 	return 0;
      + }
   -:  ----------- >  5:  376345fdf66 tree: add repository parameter to read_tree_fn_t
   1:  41664a59029 !  6:  1b9b049d64f archive: add --recurse-submodules to git-archive command
      @@
        ## Metadata ##
      -Author: Alphadelta14 <alpha@alphaservcomputing.solutions>
      +Author: Heather Lapointe <alpha@alphaservcomputing.solutions>
## Commit message ##
      -    archive: add --recurse-submodules to git-archive command
      +    archive: pass repo objects to write_archive handlers
- This makes it possible to include submodule contents in an archive command.
      -
      -    This required updating the general read_tree callbacks to support sub-repos
      -    by not using the_repository global references where possible.
      -
      -    archive: update streaming to use target repo
      -    archive: add test cases for git archive --recurse-submodules
      +    Use contextual repos instead of the_repository or args->repo
      +    to ensure that submodules will be handled correctly
      +    since they use multiple repo instances.
Signed-off-by: Heather Lapointe <alpha@alphaservcomputing.solutions> @@ archive-tar.c: static unsigned long offset;
        static int tar_umask = 002;
static int write_tar_filter_archive(const struct archiver *ar,
      -+				    struct repository *repo,
      ++					struct repository *repo,
        				    struct archiver_args *args);
/*
      @@ archive-tar.c: static void write_extended_header(struct archiver_args *args,
        }
-static int write_tar_entry(struct archiver_args *args,
      -+static int write_tar_entry(struct repository *repo,
      ++static int write_tar_entry(
      ++			   struct repository *repo,
       +			   struct archiver_args *args,
        			   const struct object_id *oid,
        			   const char *path, size_t pathlen,
      @@ archive-tar.c: static void tgz_write_block(const void *data)
        static const char internal_gzip_command[] = "git archive gzip";
static int write_tar_filter_archive(const struct archiver *ar,
      -+				    struct repository *repo,
      ++					struct repository *repo,
        				    struct archiver_args *args)
        {
        #if ZLIB_VERNUM >= 0x1221
      @@ archive-zip.c: static int entry_is_binary(struct index_state *istate, const char
        #define STREAM_BUFFER_SIZE (1024 * 16)
-static int write_zip_entry(struct archiver_args *args,
      -+static int write_zip_entry(struct repository *repo,
      ++static int write_zip_entry(
      ++			   struct repository *repo,
       +			   struct archiver_args *args,
        			   const struct object_id *oid,
        			   const char *path, size_t pathlen,
      @@ archive-zip.c: static int archive_zip_config(const char *var, const char *value,
        }
static int write_zip_archive(const struct archiver *ar UNUSED,
      -+			     struct repository *repo,
      ++				 struct repository *repo,
        			     struct archiver_args *args)
        {
        	int err;
      @@ archive-zip.c: static int write_zip_archive(const struct archiver *ar UNUSED,
## archive.c ##
      -@@
      - #include "unpack-trees.h"
      - #include "dir.h"
      - #include "quote.h"
      -+#include "submodule.h"
      -
      - static char const * const archive_usage[] = {
      - 	N_("git archive [<options>] <tree-ish> [<path>...]"),
      -@@ archive.c: static void format_subst(const struct commit *commit,
      - }
      -
      - static void *object_file_to_archive(const struct archiver_args *args,
      -+				    struct repository *repo,
      - 				    const char *path,
      - 				    const struct object_id *oid,
      - 				    unsigned int mode,
      -@@ archive.c: static void *object_file_to_archive(const struct archiver_args *args,
      - 			       (args->tree ? &args->tree->object.oid : NULL), oid);
      -
      - 	path += args->baselen;
      --	buffer = read_object_file(oid, type, sizep);
      -+	buffer = repo_read_object_file(repo, oid, type, sizep);
      - 	if (buffer && S_ISREG(mode)) {
      - 		struct strbuf buf = STRBUF_INIT;
      - 		size_t size = 0;
      -
      - 		strbuf_attach(&buf, buffer, *sizep, *sizep + 1);
      --		convert_to_working_tree(args->repo->index, path, buf.buf, buf.len, &buf, &meta);
      -+		convert_to_working_tree(repo->index, path, buf.buf, buf.len, &buf, &meta);
      - 		if (commit)
      - 			format_subst(commit, buf.buf, buf.len, &buf, args->pretty_ctx);
      - 		buffer = strbuf_detach(&buf, &size);
       @@ archive.c: static int check_attr_export_subst(const struct attr_check *check)
        	return check && ATTR_TRUE(check->items[1].value);
        }
-static int write_archive_entry(const struct object_id *oid, const char *base,
      -+static int write_archive_entry(struct repository *repo, const struct object_id *oid, const char *base,
      ++static int write_archive_entry(
      ++		struct repository *repo,
      ++		const struct object_id *oid, const char *base,
        		int baselen, const char *filename, unsigned mode,
        		void *context)
        {
      @@ archive.c: static int write_archive_entry(const struct object_id *oid, const cha
       +		err = write_entry(repo, args, oid, path.buf, path.len, mode, NULL, 0);
        		if (err)
        			return err;
      --		return (S_ISDIR(mode) ? READ_TREE_RECURSIVE : 0);
      -+		return READ_TREE_RECURSIVE;
      - 	}
      -
      - 	if (args->verbose)
      + 		return (S_ISDIR(mode) ? READ_TREE_RECURSIVE : 0);
       @@ archive.c: static int write_archive_entry(const struct object_id *oid, const char *base,
/* Stream it? */
        	if (S_ISREG(mode) && !args->convert &&
       -	    oid_object_info(args->repo, oid, &size) == OBJ_BLOB &&
      --	    size > big_file_threshold)
      --		return write_entry(args, oid, path.buf, path.len, mode, NULL, size);
       +	    oid_object_info(repo, oid, &size) == OBJ_BLOB &&
      -+	    size > big_file_threshold) {
      -+			err = write_entry(repo, args, oid, path.buf, path.len, mode, NULL, size);
      -+			if (err) {
      -+				die("Failed to write file %.*s", (int)path.len, path.buf);
      -+			}
      -+			return err;
      -+		}
      + 	    size > big_file_threshold)
      +-		return write_entry(args, oid, path.buf, path.len, mode, NULL, size);
      ++		return write_entry(repo, args, oid, path.buf, path.len, mode, NULL, size);
-- buffer = object_file_to_archive(args, path.buf, oid, mode, &type, &size);
      -+	buffer = object_file_to_archive(args, repo, path.buf, oid, mode, &type, &size);
      + 	buffer = object_file_to_archive(args, path.buf, oid, mode, &type, &size);
        	if (!buffer)
        		return error(_("cannot read '%s'"), oid_to_hex(oid));
       -	err = write_entry(args, oid, path.buf, path.len, mode, buffer, size);
      @@ archive.c: static void queue_directory(const struct object_id *oid,
        }
-static int write_directory(struct archiver_context *c)
      -+static void queue_submodule(struct repository *superproject,
      -+		const struct object_id *oid,
      -+		struct strbuf *base, const char *filename,
      -+		unsigned mode, struct archiver_context *c)
      -+{
      -+	struct repository subrepo;
      -+
      -+	if (repo_submodule_init(&subrepo, superproject, filename, null_oid()))
      -+		return;
      -+
      -+	if (repo_read_index(&subrepo) < 0)
      -+		die("index file corrupt");
      -+
      -+    queue_directory(oid, base, filename, mode, c);
      -+
      -+	repo_clear(&subrepo);
      -+}
      -+
      -+static int write_directory(struct repository *repo, struct archiver_context *c)
      ++static int write_directory(
      ++		struct repository *repo,
      ++		struct archiver_context *c)
        {
        	struct directory *d = c->bottom;
        	int ret;
      @@ archive.c: static int write_directory(struct archiver_context *c)
       +		write_directory(repo, c) ||
       +		write_archive_entry(repo, &d->oid, d->path, d->baselen,
        				    d->path + d->baselen, d->mode,
      --				    c) != READ_TREE_RECURSIVE;
      -+				    c);
      + 				    c) != READ_TREE_RECURSIVE;
        	free(d);
      --	return ret ? -1 : 0;
      -+	if (ret == READ_TREE_RECURSIVE)
      -+		return 0;
      -+	return ret;
      - }
      -
      --static int queue_or_write_archive_entry(const struct object_id *oid,
      -+static int queue_or_write_archive_entry(
      -+		struct repository *repo, const struct object_id *oid,
      - 		struct strbuf *base, const char *filename,
      - 		unsigned mode, void *context)
      - {
      -@@ archive.c: static int queue_or_write_archive_entry(const struct object_id *oid,
      - 		/* Borrow base, but restore its original value when done. */
      - 		strbuf_addstr(base, filename);
      - 		strbuf_addch(base, '/');
      --		check = get_archive_attrs(c->args->repo->index, base->buf);
      -+		check = get_archive_attrs(repo->index, base->buf);
      - 		strbuf_setlen(base, baselen);
      -
      - 		if (check_attr_export_ignore(check))
      - 			return 0;
      - 		queue_directory(oid, base, filename, mode, c);
      +@@ archive.c: static int queue_or_write_archive_entry(
        		return READ_TREE_RECURSIVE;
      -+	} else if (c->args->recurse_submodules && S_ISGITLINK(mode)) {
      -+		if (is_submodule_active(repo, filename)) {
      -+			queue_submodule(repo, oid, base, filename, mode, c);
      -+			return READ_TREE_RECURSIVE;
      -+		}
        	}
- if (write_directory(c))
      -+	if (write_directory(repo, c))
      ++	if (write_directory(r, c))
        		return -1;
       -	return write_archive_entry(oid, base->buf, base->len, filename, mode,
      -+	return write_archive_entry(repo, oid, base->buf, base->len, filename, mode,
      ++	return write_archive_entry(r, oid, base->buf, base->len, filename, mode,
        				   context);
        }
@@ archive.c: struct extra_file_info {
        };
-int write_archive_entries(struct archiver_args *args,
      -+int write_archive_entries(struct repository *repo,
      ++int write_archive_entries(
      ++		struct repository *repo,
       +		struct archiver_args *args,
        		write_archive_entry_fn_t write_entry)
        {
      @@ archive.c: int write_archive_entries(struct archiver_args *args,
        				  len, 040777, NULL, 0);
        		if (err)
        			return err;
      -@@ archive.c: int write_archive_entries(struct archiver_args *args,
      - 		memset(&opts, 0, sizeof(opts));
      - 		opts.index_only = 1;
      - 		opts.head_idx = -1;
      --		opts.src_index = args->repo->index;
      --		opts.dst_index = args->repo->index;
      -+		opts.src_index = repo->index;
      -+		opts.dst_index = repo->index;
      - 		opts.fn = oneway_merge;
      - 		init_tree_desc(&t, args->tree->buffer, args->tree->size);
      - 		if (unpack_trees(1, &t, &opts))
      -@@ archive.c: int write_archive_entries(struct archiver_args *args,
      - 		git_attr_set_direction(GIT_ATTR_INDEX);
      - 	}
      -
      --	err = read_tree(args->repo, args->tree,
      -+	err = read_tree(repo, args->tree,
      - 			&args->pathspec,
      - 			queue_or_write_archive_entry,
      - 			&context);
       @@ archive.c: int write_archive_entries(struct archiver_args *args,
        			if (strbuf_read_file(&content, path, info->stat.st_size) < 0)
        				err = error_errno(_("cannot read '%s'"), path);
      @@ archive.c: int write_archive_entries(struct archiver_args *args,
        					  path, strlen(path),
        					  canon_mode(info->stat.st_mode),
        					  info->content, info->stat.st_size);
      -@@ archive.c: struct path_exists_context {
      - 	struct archiver_args *args;
      - };
      -
      --static int reject_entry(const struct object_id *oid UNUSED,
      -+static int reject_entry(struct repository *repo, const struct object_id *oid UNUSED,
      - 			struct strbuf *base,
      - 			const char *filename, unsigned mode,
      - 			void *context)
      -@@ archive.c: static int reject_entry(const struct object_id *oid UNUSED,
      - 		struct strbuf sb = STRBUF_INIT;
      - 		strbuf_addbuf(&sb, base);
      - 		strbuf_addstr(&sb, filename);
      --		if (!match_pathspec(ctx->args->repo->index,
      -+		if (!match_pathspec(repo->index,
      - 				    &ctx->pathspec,
      - 				    sb.buf, sb.len, 0, NULL, 1))
      - 			ret = READ_TREE_RECURSIVE;
      -@@ archive.c: static void parse_pathspec_arg(const char **pathspec,
      - 		       PATHSPEC_PREFER_FULL,
      - 		       "", pathspec);
      - 	ar_args->pathspec.recursive = 1;
      -+	ar_args->pathspec.recurse_submodules = ar_args->recurse_submodules;
      - 	if (pathspec) {
      - 		while (*pathspec) {
      - 			if (**pathspec && !path_exists(ar_args, *pathspec))
      -@@ archive.c: static int parse_archive_args(int argc, const char **argv,
      - 	int verbose = 0;
      - 	int i;
      - 	int list = 0;
      -+	int recurse_submodules = 0;
      - 	int worktree_attributes = 0;
      - 	struct option opts[] = {
      - 		OPT_GROUP(""),
      -@@ archive.c: static int parse_archive_args(int argc, const char **argv,
      - 		  add_file_cb, (intptr_t)&base },
      - 		OPT_STRING('o', "output", &output, N_("file"),
      - 			N_("write the archive to this file")),
      -+		OPT_BOOL(0, "recurse-submodules", &recurse_submodules,
      -+			N_("include submodules in archive")),
      - 		OPT_BOOL(0, "worktree-attributes", &worktree_attributes,
      - 			N_("read .gitattributes in working directory")),
      - 		OPT__VERBOSE(&verbose, N_("report archived files on stderr")),
      -@@ archive.c: static int parse_archive_args(int argc, const char **argv,
      - 	args->base = base;
      - 	args->baselen = strlen(base);
      - 	args->worktree_attributes = worktree_attributes;
      -+	args->recurse_submodules = recurse_submodules;
      -
      - 	return argc;
      - }
       @@ archive.c: int write_archive(int argc, const char **argv, const char *prefix,
        	parse_treeish_arg(argv, &args, prefix, remote);
        	parse_pathspec_arg(argv + 1, &args);
      @@ archive.c: int write_archive(int argc, const char **argv, const char *prefix,
        	free(args.refname);
## archive.h ##
      -@@ archive.h: struct archiver_args {
      - 	timestamp_t time;
      - 	struct pathspec pathspec;
      - 	unsigned int verbose : 1;
      -+	unsigned int recurse_submodules : 1;
      - 	unsigned int worktree_attributes : 1;
      - 	unsigned int convert : 1;
      - 	int compression_level;
       @@ archive.h: const char *archive_format_from_filename(const char *filename);
        #define ARCHIVER_HIGH_COMPRESSION_LEVELS 4
        struct archiver {
        	const char *name;
       -	int (*write_archive)(const struct archiver *, struct archiver_args *);
      -+	int (*write_archive)(const struct archiver *, struct repository *repo, struct archiver_args *);
      ++	int (*write_archive)(
      ++		const struct archiver *,
      ++		struct repository *,
      ++		struct archiver_args *);
        	unsigned flags;
        	char *filter_command;
        };
      @@ archive.h: void init_tar_archiver(void);
        void init_archivers(void);
-typedef int (*write_archive_entry_fn_t)(struct archiver_args *args,
      -+typedef int (*write_archive_entry_fn_t)(struct repository *repo,
      ++typedef int (*write_archive_entry_fn_t)(
      ++					struct repository *repo,
       +					struct archiver_args *args,
        					const struct object_id *oid,
        					const char *path, size_t pathlen,
      @@ archive.h: void init_tar_archiver(void);
        					void *buffer, unsigned long size);
-int write_archive_entries(struct archiver_args *args, write_archive_entry_fn_t write_entry);
      -+int write_archive_entries(struct repository *repo, struct archiver_args *args, write_archive_entry_fn_t write_entry);
      ++int write_archive_entries(
      ++	struct repository *repo,
      ++	struct archiver_args *args,
      ++	write_archive_entry_fn_t write_entry);
#endif /* ARCHIVE_H */
      -
      - ## builtin/checkout.c ##
      -@@ builtin/checkout.c: static int post_checkout_hook(struct commit *old_commit, struct commit *new_comm
      -
      - }
      -
      --static int update_some(const struct object_id *oid, struct strbuf *base,
      -+static int update_some(struct repository *repo UNUSED, const struct object_id *oid, struct strbuf *base,
      - 		       const char *pathname, unsigned mode, void *context UNUSED)
      - {
      - 	int len;
      -
      - ## builtin/log.c ##
      -@@ builtin/log.c: static int show_tag_object(const struct object_id *oid, struct rev_info *rev)
      - 	return 0;
      - }
      -
      --static int show_tree_object(const struct object_id *oid UNUSED,
      -+static int show_tree_object(struct repository *repo UNUSED, const struct object_id *oid UNUSED,
      - 			    struct strbuf *base UNUSED,
      - 			    const char *pathname, unsigned mode,
      - 			    void *context)
      -
      - ## builtin/ls-files.c ##
      -@@ builtin/ls-files.c: static int get_common_prefix_len(const char *common_prefix)
      - 	return common_prefix_len;
      - }
      -
      --static int read_one_entry_opt(struct index_state *istate,
      -+static int read_one_entry_opt(struct repository *repo UNUSED, struct index_state *istate,
      - 			      const struct object_id *oid,
      - 			      struct strbuf *base,
      - 			      const char *pathname,
      -@@ builtin/ls-files.c: static int read_one_entry_opt(struct index_state *istate,
      - 	return add_index_entry(istate, ce, opt);
      - }
      -
      --static int read_one_entry(const struct object_id *oid, struct strbuf *base,
      -+static int read_one_entry(struct repository *repo, const struct object_id *oid, struct strbuf *base,
      - 			  const char *pathname, unsigned mode,
      - 			  void *context)
      - {
      - 	struct index_state *istate = context;
      --	return read_one_entry_opt(istate, oid, base, pathname,
      -+	return read_one_entry_opt(repo, istate, oid, base, pathname,
      - 				  mode,
      - 				  ADD_CACHE_OK_TO_ADD|ADD_CACHE_SKIP_DFCHECK);
      - }
      -@@ builtin/ls-files.c: static int read_one_entry(const struct object_id *oid, struct strbuf *base,
      -  * This is used when the caller knows there is no existing entries at
      -  * the stage that will conflict with the entry being added.
      -  */
      --static int read_one_entry_quick(const struct object_id *oid, struct strbuf *base,
      -+static int read_one_entry_quick(struct repository *repo, const struct object_id *oid, struct strbuf *base,
      - 				const char *pathname, unsigned mode,
      - 				void *context)
      - {
      - 	struct index_state *istate = context;
      --	return read_one_entry_opt(istate, oid, base, pathname,
      -+	return read_one_entry_opt(repo, istate, oid, base, pathname,
      - 				  mode, ADD_CACHE_JUST_APPEND);
      - }
      -
      -
      - ## builtin/ls-tree.c ##
      -@@ builtin/ls-tree.c: static int show_recursive(const char *base, size_t baselen, const char *pathname
      - 	return 0;
      - }
      -
      --static int show_tree_fmt(const struct object_id *oid, struct strbuf *base,
      -+static int show_tree_fmt(struct repository *repo UNUSED, const struct object_id *oid, struct strbuf *base,
      - 			 const char *pathname, unsigned mode, void *context UNUSED)
      - {
      - 	size_t baselen;
      -@@ builtin/ls-tree.c: static void show_tree_common_default_long(struct strbuf *base,
      - 	strbuf_setlen(base, baselen);
      - }
      -
      --static int show_tree_default(const struct object_id *oid, struct strbuf *base,
      -+static int show_tree_default(struct repository *repo UNUSED, const struct object_id *oid, struct strbuf *base,
      - 			     const char *pathname, unsigned mode,
      - 			     void *context UNUSED)
      - {
      -@@ builtin/ls-tree.c: static int show_tree_default(const struct object_id *oid, struct strbuf *base,
      - 	return recurse;
      - }
      -
      --static int show_tree_long(const struct object_id *oid, struct strbuf *base,
      -+static int show_tree_long(struct repository *repo, const struct object_id *oid, struct strbuf *base,
      - 			  const char *pathname, unsigned mode,
      - 			  void *context UNUSED)
      - {
      -@@ builtin/ls-tree.c: static int show_tree_long(const struct object_id *oid, struct strbuf *base,
      -
      - 	if (data.type == OBJ_BLOB) {
      - 		unsigned long size;
      --		if (oid_object_info(the_repository, data.oid, &size) == OBJ_BAD)
      -+		if (oid_object_info(repo, data.oid, &size) == OBJ_BAD)
      - 			xsnprintf(size_text, sizeof(size_text), "BAD");
      - 		else
      - 			xsnprintf(size_text, sizeof(size_text),
      -@@ builtin/ls-tree.c: static int show_tree_long(const struct object_id *oid, struct strbuf *base,
      - 	}
      -
      - 	printf("%06o %s %s %7s\t", data.mode, type_name(data.type),
      --	       find_unique_abbrev(data.oid, abbrev), size_text);
      -+	       repo_find_unique_abbrev(repo, data.oid, abbrev), size_text);
      - 	show_tree_common_default_long(base, pathname, data.base->len);
      - 	return recurse;
      - }
      -
      --static int show_tree_name_only(const struct object_id *oid, struct strbuf *base,
      -+static int show_tree_name_only(struct repository *repo UNUSED, const struct object_id *oid, struct strbuf *base,
      - 			       const char *pathname, unsigned mode,
      - 			       void *context UNUSED)
      - {
      -@@ builtin/ls-tree.c: static int show_tree_name_only(const struct object_id *oid, struct strbuf *base,
      - 	return recurse;
      - }
      -
      --static int show_tree_object(const struct object_id *oid, struct strbuf *base,
      -+static int show_tree_object(struct repository *repo, const struct object_id *oid, struct strbuf *base,
      - 			    const char *pathname, unsigned mode,
      - 			    void *context UNUSED)
      - {
      -@@ builtin/ls-tree.c: static int show_tree_object(const struct object_id *oid, struct strbuf *base,
      - 	if (early >= 0)
      - 		return early;
      -
      --	printf("%s%c", find_unique_abbrev(oid, abbrev), line_termination);
      -+	printf("%s%c", repo_find_unique_abbrev(repo, oid, abbrev), line_termination);
      - 	return recurse;
      - }
      -
      -
      - ## list-objects.c ##
      -@@ list-objects.c: static void process_tree(struct traversal_context *ctx,
      - 	    !revs->include_check_obj(&tree->object, revs->include_check_data))
      - 		return;
      -
      --	failed_parse = parse_tree_gently(tree, 1);
      -+	failed_parse = parse_tree_gently(revs->repo, tree, 1);
      - 	if (failed_parse) {
      - 		if (revs->ignore_missing_links)
      - 			return;
      -
      - ## merge-recursive.c ##
      -@@ merge-recursive.c: static void unpack_trees_finish(struct merge_options *opt)
      - 	clear_unpack_trees_porcelain(&opt->priv->unpack_opts);
      - }
      -
      --static int save_files_dirs(const struct object_id *oid UNUSED,
      -+static int save_files_dirs(struct repository *repo UNUSED, const struct object_id *oid UNUSED,
      - 			   struct strbuf *base, const char *path,
      - 			   unsigned int mode, void *context)
      - {
      -
      - ## revision.c ##
      -@@ revision.c: static void mark_tree_contents_uninteresting(struct repository *r,
      - 	struct tree_desc desc;
      - 	struct name_entry entry;
      -
      --	if (parse_tree_gently(tree, 1) < 0)
      -+	if (parse_tree_gently(r, tree, 1) < 0)
      - 		return;
      -
      - 	init_tree_desc(&desc, tree->buffer, tree->size);
      -@@ revision.c: static void add_children_by_path(struct repository *r,
      - 	if (!tree)
      - 		return;
      -
      --	if (parse_tree_gently(tree, 1) < 0)
      -+	if (parse_tree_gently(r, tree, 1) < 0)
      - 		return;
      -
      - 	init_tree_desc(&desc, tree->buffer, tree->size);
      -
      - ## sparse-index.c ##
      -@@ sparse-index.c: static void set_index_entry(struct index_state *istate, int nr, struct cache_ent
      - 	add_name_hash(istate, ce);
      - }
      -
      --static int add_path_to_index(const struct object_id *oid,
      -+static int add_path_to_index(struct repository *repo UNUSED, const struct object_id *oid,
      - 			     struct strbuf *base, const char *path,
      - 			     unsigned int mode, void *context)
      - {
      -
      - ## t/t5005-archive-submodules.sh (new) ##
      -@@
      -+#!/bin/sh
      -+
      -+test_description='git archive --recurse-submodules test'
      -+
      -+. ./test-lib.sh
      -+. "$TEST_DIRECTORY"/lib-submodule-update.sh
      -+
      -+test_expect_success 'setup' '
      -+	create_lib_submodule_repo &&
      -+	git -C submodule_update_repo checkout valid_sub1 &&
      -+	git -C submodule_update_repo submodule update
      -+'
      -+
      -+check_tar() {
      -+	tarfile=$1.tar
      -+	listfile=$1.lst
      -+	dir=$1
      -+	dir_with_prefix=$dir/$2
      -+
      -+	test_expect_success ' extract tar archive' '
      -+		(mkdir $dir && cd $dir && "$TAR" xf -) <$tarfile
      -+	'
      -+}
      -+
      -+check_added() {
      -+	dir=$1
      -+	path_in_fs=$2
      -+	path_in_archive=$3
      -+
      -+	test_expect_success " validate extra file $path_in_archive" '
      -+		test -f $dir/$path_in_archive &&
      -+		diff -r $path_in_fs $dir/$path_in_archive
      -+	'
      -+}
      -+
      -+check_not_added() {
      -+	dir=$1
      -+	path_in_archive=$2
      -+
      -+	test_expect_success " validate unpresent file $path_in_archive" '
      -+		! test -f $dir/$path_in_archive &&
      -+		! test -d $dir/$path_in_archive
      -+	'
      -+}
      -+
      -+test_expect_success 'archive without recurse, non-init' '
      -+	reset_work_tree_to valid_sub1 &&
      -+	git -C submodule_update archive HEAD >b.tar
      -+'
      -+
      -+check_tar b
      -+check_added b submodule_update/file1 file1
      -+check_not_added b sub1/file1
      -+
      -+test_expect_success 'archive with recurse, non-init' '
      -+	reset_work_tree_to valid_sub1 &&
      -+	! git -C submodule_update archive --recurse-submodules HEAD >b2-err.tar
      -+'
      -+
      -+test_expect_success 'archive with recurse, init' '
      -+	reset_work_tree_to valid_sub1 &&
      -+	git -C submodule_update submodule update --init &&
      -+	git -C submodule_update ls-files --recurse-submodules &&
      -+	git -C submodule_update ls-tree HEAD &&
      -+	git -C submodule_update archive --recurse-submodules HEAD >b2.tar
      -+'
      -+
      -+check_tar b2
      -+check_added b2 submodule_update/sub1/file1 sub1/file1
      -+
      -+test_expect_success 'archive with recurse with big files' '
      -+	reset_work_tree_to valid_sub1 &&
      -+	test_config core.bigfilethreshold 1 &&
      -+	git -C submodule_update submodule update --init &&
      -+	git -C submodule_update ls-files --recurse-submodules &&
      -+	git -C submodule_update ls-tree HEAD &&
      -+	git -C submodule_update archive --recurse-submodules HEAD >b3.tar
      -+'
      -+
      -+check_tar b3
      -+check_added b3 submodule_update/sub1/file1 sub1/file1
      -+
      -+
      -+test_done
      -
      - ## tree.c ##
      -@@
      - #include "alloc.h"
      - #include "tree-walk.h"
      - #include "repository.h"
      -+#include "pathspec.h"
      -
      - const char *tree_type = "tree";
      -
      -@@ tree.c: int read_tree_at(struct repository *r,
      - 	int len, oldlen = base->len;
      - 	enum interesting retval = entry_not_interesting;
      -
      --	if (parse_tree(tree))
      --		return -1;
      -+	if (repo_parse_tree(r, tree))
      -+		die("Failed to parse tree");
      -
      - 	init_tree_desc(&desc, tree->buffer, tree->size);
      -
      -@@ tree.c: int read_tree_at(struct repository *r,
      - 				continue;
      - 		}
      -
      --		switch (fn(&entry.oid, base,
      -+		switch (fn(r, &entry.oid, base,
      - 			   entry.path, entry.mode, context)) {
      - 		case 0:
      - 			continue;
      -@@ tree.c: int read_tree_at(struct repository *r,
      - 			return -1;
      - 		}
      -
      --		if (S_ISDIR(entry.mode))
      -+		if (S_ISDIR(entry.mode)) {
      - 			oidcpy(&oid, &entry.oid);
      --		else if (S_ISGITLINK(entry.mode)) {
      -+			len = tree_entry_len(&entry);
      -+			strbuf_add(base, entry.path, len);
      -+			strbuf_addch(base, '/');
      -+			retval = read_tree_at(r, lookup_tree(r, &oid),
      -+						base, pathspec,
      -+						fn, context);
      -+			strbuf_setlen(base, oldlen);
      -+			if (retval)
      -+				return -1;
      -+		} else if (pathspec->recurse_submodules && S_ISGITLINK(entry.mode)) {
      - 			struct commit *commit;
      -+			struct repository subrepo;
      -+			struct repository* subrepo_p = &subrepo;
      -+			struct tree* submodule_tree;
      -
      --			commit = lookup_commit(r, &entry.oid);
      -+			if (repo_submodule_init(subrepo_p, r, entry.path, null_oid()))
      -+				die("couldn't init submodule %s%s", base->buf, entry.path);
      -+
      -+			if (repo_read_index(subrepo_p) < 0)
      -+				die("index file corrupt");
      -+
      -+			commit = lookup_commit(subrepo_p, &entry.oid);
      - 			if (!commit)
      - 				die("Commit %s in submodule path %s%s not found",
      - 				    oid_to_hex(&entry.oid),
      - 				    base->buf, entry.path);
      -
      --			if (parse_commit(commit))
      -+			if (repo_parse_commit(subrepo_p, commit))
      - 				die("Invalid commit %s in submodule path %s%s",
      - 				    oid_to_hex(&entry.oid),
      - 				    base->buf, entry.path);
      -
      --			oidcpy(&oid, get_commit_tree_oid(commit));
      -+			submodule_tree = repo_get_commit_tree(subrepo_p, commit);
      -+			oidcpy(&oid, submodule_tree ? &submodule_tree->object.oid : NULL);
      -+
      -+			len = tree_entry_len(&entry);
      -+			strbuf_add(base, entry.path, len);
      -+			strbuf_addch(base, '/');
      -+			retval = read_tree_at(subrepo_p, lookup_tree(subrepo_p, &oid),
      -+						base, pathspec,
      -+						fn, context);
      -+			if (retval) {
      -+			    die("failed to read tree for %s%s", base->buf, entry.path);
      -+			    return -1;
      -+			}
      -+			strbuf_setlen(base, oldlen);
      -+			repo_clear(subrepo_p);
      - 		}
      --		else
      --			continue;
      -
      --		len = tree_entry_len(&entry);
      --		strbuf_add(base, entry.path, len);
      --		strbuf_addch(base, '/');
      --		retval = read_tree_at(r, lookup_tree(r, &oid),
      --				      base, pathspec,
      --				      fn, context);
      --		strbuf_setlen(base, oldlen);
      --		if (retval)
      --			return -1;
      - 	}
      - 	return 0;
      - }
      -@@ tree.c: int parse_tree_buffer(struct tree *item, void *buffer, unsigned long size)
      - 	return 0;
      - }
      -
      --int parse_tree_gently(struct tree *item, int quiet_on_missing)
      -+int parse_tree_gently(struct repository *r, struct tree *item, int quiet_on_missing)
      - {
      - 	 enum object_type type;
      - 	 void *buffer;
      -@@ tree.c: int parse_tree_gently(struct tree *item, int quiet_on_missing)
      -
      - 	if (item->object.parsed)
      - 		return 0;
      --	buffer = read_object_file(&item->object.oid, &type, &size);
      -+	buffer = repo_read_object_file(r, &item->object.oid, &type, &size);
      - 	if (!buffer)
      - 		return quiet_on_missing ? -1 :
      - 			error("Could not read %s",
      -
      - ## tree.h ##
      -@@ tree.h: struct tree *lookup_tree(struct repository *r, const struct object_id *oid);
      -
      - int parse_tree_buffer(struct tree *item, void *buffer, unsigned long size);
      -
      --int parse_tree_gently(struct tree *tree, int quiet_on_missing);
      --static inline int parse_tree(struct tree *tree)
      -+int parse_tree_gently(struct repository *r, struct tree *tree, int quiet_on_missing);
      -+static inline int repo_parse_tree(struct repository *r, struct tree *tree)
      - {
      --	return parse_tree_gently(tree, 0);
      -+	return parse_tree_gently(r, tree, 0);
      - }
      -+#ifndef NO_THE_REPOSITORY_COMPATIBILITY_MACROS
      -+#define parse_tree(tree) repo_parse_tree(the_repository, tree)
      -+#endif
      - void free_tree_buffer(struct tree *tree);
      -
      - /* Parses and returns the tree in the given ent, chasing tags and commits. */
      -@@ tree.h: struct tree *parse_tree_indirect(const struct object_id *oid);
      - int cmp_cache_name_compare(const void *a_, const void *b_);
      -
      - #define READ_TREE_RECURSIVE 1
      --typedef int (*read_tree_fn_t)(const struct object_id *, struct strbuf *, const char *, unsigned int, void *);
      -+typedef int (*read_tree_fn_t)(struct repository *, const struct object_id *, struct strbuf *, const char *, unsigned int, void *);
      -
      - int read_tree_at(struct repository *r,
      - 		 struct tree *tree, struct strbuf *base,
      -
      - ## wt-status.c ##
      -@@ wt-status.c: static void wt_status_collect_changes_index(struct wt_status *s)
      - 	release_revisions(&rev);
      - }
      -
      --static int add_file_to_list(const struct object_id *oid,
      -+static int add_file_to_list(struct repository *repo UNUSED, const struct object_id *oid,
      - 			    struct strbuf *base, const char *path,
      - 			    unsigned int mode, void *context)
      - {
   -:  ----------- >  7:  2443c9b1b6e archive: remove global repository from archive_args
   -:  ----------- >  8:  4672e3d9586 archive: add --recurse-submodules to git-archive command
   -:  ----------- >  9:  f88ebbaf17c archive: add tests for git archive --recurse-submodules




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