Add vitastor-cli ls --exact

src/cmd/cli.cpp

@@ -30,6 +30,7 @@ static const char* help_text =
     "\n"
     "vitastor-cli ls [-l] [-p POOL] [--sort FIELD] [-r] [-n N] [<glob> ...]\n"
     "  List images (only matching <glob> patterns if passed).\n"
+    "  --exact         Do not match glob patterns as names, select only exact name matches.\n"
     "  -p|--pool POOL  Filter images by pool ID or name\n"
     "  -l|--long       Also report allocated size and I/O statistics\n"
     "  --del           Also include delete operation statistics\n"
@@ -275,7 +276,7 @@ static json11::Json::object parse_args(int narg, const char *args[])
                 !strcmp(opt, "allow-data-loss") || !strcmp(opt, "allow_data_loss") ||
                 !strcmp(opt, "down-ok") || !strcmp(opt, "down_ok") ||
                 !strcmp(opt, "dry-run") || !strcmp(opt, "dry_run") ||
-                !strcmp(opt, "help") || !strcmp(opt, "all") ||
+                !strcmp(opt, "help") || !strcmp(opt, "all") || !strcmp(opt, "exact") ||
                 !strcmp(opt, "writers-stopped") || !strcmp(opt, "writers_stopped"))
             {
                 cfg[opt] = "1";

src/cmd/cli_ls.cpp

@@ -18,6 +18,7 @@ struct image_lister_t
     std::string sort_field;
     std::set<std::string> only_names;
     bool reverse = false;
+    bool exact = false;
     int max_count = 0;
     bool show_stats = false, show_delete = false;
 
@@ -208,9 +209,9 @@ resume_1:
             }
             else
             {
-                for (auto glob: only_names)
+                for (auto & glob: only_names)
                 {
-                    if (stupid_glob(kv.second["name"].string_value(), glob))
+                    if (exact ? (kv.second["name"].string_value() == glob) : stupid_glob(kv.second["name"].string_value(), glob))
                     {
                         list.push_back(kv.second);
                         break;
@@ -538,6 +539,7 @@ std::function<bool(cli_result_t &)> cli_tool_t::start_ls(json11::Json cfg)
 {
     auto lister = new image_lister_t();
     lister->parent = this;
+    lister->exact = cfg["exact"].bool_value();
     lister->list_pool_id = cfg["pool"].uint64_value();
     lister->list_pool_name = lister->list_pool_id ? "" : cfg["pool"].as_string();
     lister->show_stats = cfg["long"].bool_value();