1 files changed, 89 insertions, 0 deletions
diff --git a/builtin/prune-packed.c b/builtin/prune-packed.c
new file mode 100644
index 0000000000..6879468c46
--- /dev/null
+++ b/builtin/prune-packed.c
@@ -0,0 +1,89 @@
+#include "builtin.h"
+#include "cache.h"
+#include "progress.h"
+#include "parse-options.h"
+
+static const char * const prune_packed_usage[] = {
+	N_("git prune-packed [-n|--dry-run] [-q|--quiet]"),
+	NULL
+};
+
+static struct progress *progress;
+
+static void prune_dir(int i, DIR *dir, struct strbuf *pathname, int opts)
+{
+	struct dirent *de;
+	char hex[40];
+	int top_len = pathname->len;
+
+	sprintf(hex, "%02x", i);
+	while ((de = readdir(dir)) != NULL) {
+		unsigned char sha1[20];
+		if (strlen(de->d_name) != 38)
+			continue;
+		memcpy(hex + 2, de->d_name, 38);
+		if (get_sha1_hex(hex, sha1))
+			continue;
+		if (!has_sha1_pack(sha1))
+			continue;
+
+		strbuf_add(pathname, de->d_name, 38);
+		if (opts & PRUNE_PACKED_DRY_RUN)
+			printf("rm -f %s\n", pathname->buf);
+		else
+			unlink_or_warn(pathname->buf);
+		display_progress(progress, i + 1);
+		strbuf_setlen(pathname, top_len);
+	}
+}
+
+void prune_packed_objects(int opts)
+{
+	int i;
+	const char *dir = get_object_directory();
+	struct strbuf pathname = STRBUF_INIT;
+	int top_len;
+
+	strbuf_addstr(&pathname, dir);
+	if (opts & PRUNE_PACKED_VERBOSE)
+		progress = start_progress_delay(_("Removing duplicate objects"),
+			256, 95, 2);
+
+	if (pathname.len && pathname.buf[pathname.len - 1] != '/')
+		strbuf_addch(&pathname, '/');
+
+	top_len = pathname.len;
+	for (i = 0; i < 256; i++) {
+		DIR *d;
+
+		display_progress(progress, i + 1);
+		strbuf_setlen(&pathname, top_len);
+		strbuf_addf(&pathname, "%02x/", i);
+		d = opendir(pathname.buf);
+		if (!d)
+			continue;
+		prune_dir(i, d, &pathname, opts);
+		closedir(d);
+		strbuf_setlen(&pathname, top_len + 2);
+		rmdir(pathname.buf);
+	}
+	stop_progress(&progress);
+}
+
+int cmd_prune_packed(int argc, const char **argv, const char *prefix)
+{
+	int opts = isatty(2) ? PRUNE_PACKED_VERBOSE : 0;
+	const struct option prune_packed_options[] = {
+		OPT_BIT('n', "dry-run", &opts, N_("dry run"),
+			PRUNE_PACKED_DRY_RUN),
+		OPT_NEGBIT('q', "quiet", &opts, N_("be quiet"),
+			   PRUNE_PACKED_VERBOSE),
+		OPT_END()
+	};
+
+	argc = parse_options(argc, argv, prefix, prune_packed_options,
+			     prune_packed_usage, 0);
+
+	prune_packed_objects(opts);
+	return 0;
+}