forked from vitalif/vitastor
Add glob pattern matching for ls
parent
b262938bca
commit
20d5ed799a
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@ -85,8 +85,8 @@ void cli_tool_t::help()
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"(c) Vitaliy Filippov, 2019+ (VNPL-1.1)\n"
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"\n"
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"USAGE:\n"
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"%s ls [-l] [-p POOL] [--sort FIELD] [-r] [-n N] [<name> ...]\n"
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" List images (only specified if <name> passed).\n"
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"%s ls [-l] [-p POOL] [--sort FIELD] [-r] [-n N] [<glob> ...]\n"
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" List images (only matching <glob> patterns if passed).\n"
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" -p|--pool POOL Filter images by pool ID or name\n"
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" -l|--long Also report allocated size and I/O statistics\n"
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" --del Also include delete operation statistics\n"
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@ -16,6 +16,8 @@ std::string format_lat(uint64_t lat);
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std::string format_q(double depth);
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bool stupid_glob(const std::string str, const std::string glob);
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// List existing images
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//
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// Again, you can just look into etcd, but this console tool incapsulates it
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@ -213,10 +215,21 @@ resume_1:
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json11::Json::array list;
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for (auto & kv: stats)
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{
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if (!only_names.size() || only_names.find(kv.second["name"].string_value()) != only_names.end())
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if (!only_names.size())
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{
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list.push_back(kv.second);
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}
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else
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{
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for (auto glob: only_names)
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{
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if (stupid_glob(kv.second["name"].string_value(), glob))
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{
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list.push_back(kv.second);
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break;
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}
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}
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}
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}
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if (sort_field == "name" || sort_field == "pool_name")
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{
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@ -493,6 +506,62 @@ std::string format_q(double depth)
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return std::string(buf);
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}
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struct glob_stack_t
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{
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int glob_pos;
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int str_pos;
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};
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// Yes I know I could do it by translating the pattern to std::regex O:-)
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bool stupid_glob(const std::string str, const std::string glob)
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{
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std::vector<glob_stack_t> wildcards;
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int pos = 0, gp = 0;
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bool m;
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back:
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while (true)
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{
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if (gp >= glob.length())
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{
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if (pos >= str.length())
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return true;
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m = false;
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}
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else if (glob[gp] == '*')
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{
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wildcards.push_back((glob_stack_t){ .glob_pos = ++gp, .str_pos = pos });
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continue;
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}
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else if (glob[gp] == '?')
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m = pos < str.size();
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else
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{
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if (glob[gp] == '\\' && gp < glob.length()-1)
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gp++;
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m = pos < str.size() && str[pos] == glob[gp];
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}
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if (!m)
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{
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while (wildcards.size() > 0)
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{
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// Backtrack
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pos = (++wildcards[wildcards.size()-1].str_pos);
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if (pos > str.size())
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wildcards.pop_back();
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else
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{
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gp = wildcards[wildcards.size()-1].glob_pos;
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goto back;
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}
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}
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return false;
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}
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pos++;
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gp++;
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}
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return true;
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}
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std::function<bool(void)> cli_tool_t::start_ls(json11::Json cfg)
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{
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json11::Json::array cmd = cfg["command"].array_items();
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