// Luanti // SPDX-License-Identifier: LGPL-2.1-or-later // Copyright (C) 2017-8 rubenwardy #include "itemstackmetadata.h" #include "util/serialize.h" #include "util/strfnd.h" #include #include #define DESERIALIZE_START '\x01' #define DESERIALIZE_KV_DELIM '\x02' #define DESERIALIZE_PAIR_DELIM '\x03' #define DESERIALIZE_START_STR "\x01" #define DESERIALIZE_KV_DELIM_STR "\x02" #define DESERIALIZE_PAIR_DELIM_STR "\x03" #define TOOLCAP_KEY "tool_capabilities" #define WEAR_BAR_KEY "wear_color" void ItemStackMetadata::clear() { SimpleMetadata::clear(); updateToolCapabilities(); updateWearBarParams(); } static void sanitize_string(std::string &str) { str.erase(std::remove(str.begin(), str.end(), DESERIALIZE_START), str.end()); str.erase(std::remove(str.begin(), str.end(), DESERIALIZE_KV_DELIM), str.end()); str.erase(std::remove(str.begin(), str.end(), DESERIALIZE_PAIR_DELIM), str.end()); } bool ItemStackMetadata::setString(const std::string &name, std::string_view var) { std::string clean_name = name; std::string clean_var(var); sanitize_string(clean_name); sanitize_string(clean_var); bool result = SimpleMetadata::setString(clean_name, clean_var); if (clean_name == TOOLCAP_KEY) updateToolCapabilities(); else if (clean_name == WEAR_BAR_KEY) updateWearBarParams(); return result; } void ItemStackMetadata::serialize(std::ostream &os) const { std::ostringstream os2(std::ios_base::binary); os2 << DESERIALIZE_START; for (const auto &stringvar : m_stringvars) { if (!stringvar.first.empty() || !stringvar.second.empty()) os2 << stringvar.first << DESERIALIZE_KV_DELIM << stringvar.second << DESERIALIZE_PAIR_DELIM; } os << serializeJsonStringIfNeeded(os2.str()); } void ItemStackMetadata::deSerialize(std::istream &is) { std::string in = deSerializeJsonStringIfNeeded(is); m_stringvars.clear(); if (!in.empty()) { if (in[0] == DESERIALIZE_START) { Strfnd fnd(in); fnd.to(1); while (!fnd.at_end()) { std::string name = fnd.next(DESERIALIZE_KV_DELIM_STR); std::string var = fnd.next(DESERIALIZE_PAIR_DELIM_STR); m_stringvars[name] = std::move(var); } } else { // BACKWARDS COMPATIBILITY m_stringvars[""] = std::move(in); } } updateToolCapabilities(); updateWearBarParams(); } void ItemStackMetadata::updateToolCapabilities() { if (contains(TOOLCAP_KEY)) { toolcaps_overridden = true; toolcaps_override = ToolCapabilities(); std::istringstream is(getString(TOOLCAP_KEY)); toolcaps_override.deserializeJson(is); } else { toolcaps_overridden = false; } } void ItemStackMetadata::setToolCapabilities(const ToolCapabilities &caps) { std::ostringstream os; caps.serializeJson(os); setString(TOOLCAP_KEY, os.str()); } void ItemStackMetadata::clearToolCapabilities() { setString(TOOLCAP_KEY, ""); } void ItemStackMetadata::updateWearBarParams() { if (contains(WEAR_BAR_KEY)) { std::istringstream is(getString(WEAR_BAR_KEY)); wear_bar_override = WearBarParams::deserializeJson(is); } else { wear_bar_override.reset(); } } void ItemStackMetadata::setWearBarParams(const WearBarParams ¶ms) { std::ostringstream os; params.serializeJson(os); setString(WEAR_BAR_KEY, os.str()); } void ItemStackMetadata::clearWearBarParams() { setString(WEAR_BAR_KEY, ""); }