src/gistatic.c: WIP implementation of repo_write_snapshots()

1 files changed, 67 insertions, 0 deletions

diff --git a/src/gistatic.c b/src/gistatic.c
index 5c03432..5679b2e 100644
--- a/src/gistatic.c
+++ b/src/gistatic.c
@@ -1589,6 +1589,73 @@ cleanup:
 	return ret;
 }
 
+static int repo_write_snapshots(
+	const char *const outdir,
+	struct git_repository *const repo,
+	const char *const project_name
+) {
+	int ret = 0;
+	int e;
+	(void)outdir;
+	(void)repo;
+	(void)project_name;
+	char *snapshots_dir = NULL;
+	struct git_reference_iterator *ref_iter = NULL;
+
+	if (!(snapshots_dir = strjoin(outdir, "/snapshots"))) {
+		ret = -1;
+		goto cleanup;
+	}
+
+	errno = 0;
+	if (mkdir(snapshots_dir, S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH)
+			&& errno != EEXIST) {
+		logerrs("mkdir(\"", snapshots_dir, "\")", strerror(errno),
+			__LINE__);
+		ret = EXIT_ERROR;
+		goto cleanup;
+	}
+
+	if (git_reference_iterator_new(&ref_iter, repo)) {
+		const git_error *const error = git_error_last();
+		assert(error);
+		logerr("git_reference_iterator_new()", error->message,
+			__LINE__);
+		ret = -1;
+		goto cleanup;
+	}
+
+	struct git_reference *ref;
+	while (!(e = git_reference_next(&ref, ref_iter))) {
+		if (
+			   !git_reference_is_tag(ref)
+			&& !git_reference_is_branch(ref)
+			&& !git_reference_is_note(ref)
+		) {
+			git_reference_free(ref);
+			continue;
+		}
+
+		// https://github.com/ionescu007/minlzma
+		// https://git.tukaani.org/?p=xz.git;a=tree;f=src;h=665b39e6439f1bb5afd9181ec0890c2ed26d047e;hb=HEAD
+		// git archive --format tar.xz --prefix "$PROJECT-$tag/" "$tag"
+		// printf("reference name: %s\n", git_reference_shorthand(ref));
+		git_reference_free(ref);
+	}
+	if (e != GIT_ITEROVER) {
+		const git_error *const error = git_error_last();
+		assert(error);
+		logerr("git_reference_next()", error->message, __LINE__);
+		ret = -1;
+		goto cleanup;
+	}
+
+cleanup:
+	git_reference_iterator_free(ref_iter);
+	free(snapshots_dir);
+	return ret;
+}
+
 static int repo_write(
 	const char *const outdir,
 	char *const reporelpath,