diff options
Diffstat (limited to 'core/io/json.cpp')
| -rw-r--r-- | core/io/json.cpp | 132 |
1 files changed, 118 insertions, 14 deletions
diff --git a/core/io/json.cpp b/core/io/json.cpp index 4c4d91f851..7e267d35d4 100644 --- a/core/io/json.cpp +++ b/core/io/json.cpp @@ -56,6 +56,8 @@ String JSON::_make_indent(const String &p_indent, int p_size) { } String JSON::_stringify(const Variant &p_var, const String &p_indent, int p_cur_indent, bool p_sort_keys, HashSet<const void *> &p_markers, bool p_full_precision) { + ERR_FAIL_COND_V_MSG(p_cur_indent > Variant::MAX_RECURSION_DEPTH, "...", "JSON structure is too deep. Bailing."); + String colon = ":"; String end_statement = ""; @@ -357,17 +359,22 @@ Error JSON::_get_token(const char32_t *p_str, int &index, int p_len, Token &r_to return ERR_PARSE_ERROR; } -Error JSON::_parse_value(Variant &value, Token &token, const char32_t *p_str, int &index, int p_len, int &line, String &r_err_str) { +Error JSON::_parse_value(Variant &value, Token &token, const char32_t *p_str, int &index, int p_len, int &line, int p_depth, String &r_err_str) { + if (p_depth > Variant::MAX_RECURSION_DEPTH) { + r_err_str = "JSON structure is too deep. Bailing."; + return ERR_OUT_OF_MEMORY; + } + if (token.type == TK_CURLY_BRACKET_OPEN) { Dictionary d; - Error err = _parse_object(d, p_str, index, p_len, line, r_err_str); + Error err = _parse_object(d, p_str, index, p_len, line, p_depth + 1, r_err_str); if (err) { return err; } value = d; } else if (token.type == TK_BRACKET_OPEN) { Array a; - Error err = _parse_array(a, p_str, index, p_len, line, r_err_str); + Error err = _parse_array(a, p_str, index, p_len, line, p_depth + 1, r_err_str); if (err) { return err; } @@ -396,7 +403,7 @@ Error JSON::_parse_value(Variant &value, Token &token, const char32_t *p_str, in return OK; } -Error JSON::_parse_array(Array &array, const char32_t *p_str, int &index, int p_len, int &line, String &r_err_str) { +Error JSON::_parse_array(Array &array, const char32_t *p_str, int &index, int p_len, int &line, int p_depth, String &r_err_str) { Token token; bool need_comma = false; @@ -421,7 +428,7 @@ Error JSON::_parse_array(Array &array, const char32_t *p_str, int &index, int p_ } Variant v; - err = _parse_value(v, token, p_str, index, p_len, line, r_err_str); + err = _parse_value(v, token, p_str, index, p_len, line, p_depth, r_err_str); if (err) { return err; } @@ -434,7 +441,7 @@ Error JSON::_parse_array(Array &array, const char32_t *p_str, int &index, int p_ return ERR_PARSE_ERROR; } -Error JSON::_parse_object(Dictionary &object, const char32_t *p_str, int &index, int p_len, int &line, String &r_err_str) { +Error JSON::_parse_object(Dictionary &object, const char32_t *p_str, int &index, int p_len, int &line, int p_depth, String &r_err_str) { bool at_key = true; String key; Token token; @@ -483,7 +490,7 @@ Error JSON::_parse_object(Dictionary &object, const char32_t *p_str, int &index, } Variant v; - err = _parse_value(v, token, p_str, index, p_len, line, r_err_str); + err = _parse_value(v, token, p_str, index, p_len, line, p_depth, r_err_str); if (err) { return err; } @@ -497,6 +504,10 @@ Error JSON::_parse_object(Dictionary &object, const char32_t *p_str, int &index, return ERR_PARSE_ERROR; } +void JSON::set_data(const Variant &p_data) { + data = p_data; +} + Error JSON::_parse_string(const String &p_json, Variant &r_ret, String &r_err_str, int &r_err_line) { const char32_t *str = p_json.ptr(); int idx = 0; @@ -510,7 +521,7 @@ Error JSON::_parse_string(const String &p_json, Variant &r_ret, String &r_err_st return err; } - err = _parse_value(r_ret, token, str, idx, len, r_err_line, r_err_str); + err = _parse_value(r_ret, token, str, idx, len, r_err_line, 0, r_err_str); // Check if EOF is reached // or it's a type of the next token. @@ -528,11 +539,6 @@ Error JSON::_parse_string(const String &p_json, Variant &r_ret, String &r_err_st return err; } -String JSON::stringify(const Variant &p_var, const String &p_indent, bool p_sort_keys, bool p_full_precision) { - HashSet<const void *> markers; - return _stringify(p_var, p_indent, 0, p_sort_keys, markers, p_full_precision); -} - Error JSON::parse(const String &p_json_string) { Error err = _parse_string(p_json_string, data, err_str, err_line); if (err == Error::OK) { @@ -541,11 +547,109 @@ Error JSON::parse(const String &p_json_string) { return err; } +String JSON::stringify(const Variant &p_var, const String &p_indent, bool p_sort_keys, bool p_full_precision) { + Ref<JSON> jason; + jason.instantiate(); + HashSet<const void *> markers; + return jason->_stringify(p_var, p_indent, 0, p_sort_keys, markers, p_full_precision); +} + +Variant JSON::parse_string(const String &p_json_string) { + Ref<JSON> jason; + jason.instantiate(); + Error error = jason->parse(p_json_string); + ERR_FAIL_COND_V_MSG(error != Error::OK, Variant(), vformat("Parse JSON failed. Error at line %d: %s", jason->get_error_line(), jason->get_error_message())); + return jason->get_data(); +} + void JSON::_bind_methods() { - ClassDB::bind_method(D_METHOD("stringify", "data", "indent", "sort_keys", "full_precision"), &JSON::stringify, DEFVAL(""), DEFVAL(true), DEFVAL(false)); + ClassDB::bind_static_method("JSON", D_METHOD("stringify", "data", "indent", "sort_keys", "full_precision"), &JSON::stringify, DEFVAL(""), DEFVAL(true), DEFVAL(false)); + ClassDB::bind_static_method("JSON", D_METHOD("parse_string", "json_string"), &JSON::parse_string); ClassDB::bind_method(D_METHOD("parse", "json_string"), &JSON::parse); ClassDB::bind_method(D_METHOD("get_data"), &JSON::get_data); + ClassDB::bind_method(D_METHOD("set_data", "data"), &JSON::set_data); ClassDB::bind_method(D_METHOD("get_error_line"), &JSON::get_error_line); ClassDB::bind_method(D_METHOD("get_error_message"), &JSON::get_error_message); + + ADD_PROPERTY(PropertyInfo(Variant::NIL, "data", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_DEFAULT | PROPERTY_USAGE_NIL_IS_VARIANT), "set_data", "get_data"); // Ensures that it can be serialized as binary. +} + +//// + +//////////// + +Ref<Resource> ResourceFormatLoaderJSON::load(const String &p_path, const String &p_original_path, Error *r_error, bool p_use_sub_threads, float *r_progress, CacheMode p_cache_mode) { + if (r_error) { + *r_error = ERR_FILE_CANT_OPEN; + } + + if (!FileAccess::exists(p_path)) { + *r_error = ERR_FILE_NOT_FOUND; + return Ref<Resource>(); + } + + Ref<JSON> json; + json.instantiate(); + + Error err = json->parse(FileAccess::get_file_as_string(p_path)); + if (err != OK) { + if (r_error) { + *r_error = err; + } + ERR_PRINT("Error parsing JSON file at '" + p_path + "', on line " + itos(json->get_error_line()) + ": " + json->get_error_message()); + return Ref<Resource>(); + } + + if (r_error) { + *r_error = OK; + } + + return json; +} + +void ResourceFormatLoaderJSON::get_recognized_extensions(List<String> *p_extensions) const { + p_extensions->push_back("json"); +} + +bool ResourceFormatLoaderJSON::handles_type(const String &p_type) const { + return (p_type == "JSON"); +} + +String ResourceFormatLoaderJSON::get_resource_type(const String &p_path) const { + String el = p_path.get_extension().to_lower(); + if (el == "json") { + return "JSON"; + } + return ""; +} + +Error ResourceFormatSaverJSON::save(const Ref<Resource> &p_resource, const String &p_path, uint32_t p_flags) { + Ref<JSON> json = p_resource; + ERR_FAIL_COND_V(json.is_null(), ERR_INVALID_PARAMETER); + + String source = JSON::stringify(json->get_data(), "\t", false, true); + + Error err; + Ref<FileAccess> file = FileAccess::open(p_path, FileAccess::WRITE, &err); + + ERR_FAIL_COND_V_MSG(err, err, "Cannot save json '" + p_path + "'."); + + file->store_string(source); + if (file->get_error() != OK && file->get_error() != ERR_FILE_EOF) { + return ERR_CANT_CREATE; + } + + return OK; +} + +void ResourceFormatSaverJSON::get_recognized_extensions(const Ref<Resource> &p_resource, List<String> *p_extensions) const { + Ref<JSON> json = p_resource; + if (json.is_valid()) { + p_extensions->push_back("json"); + } +} + +bool ResourceFormatSaverJSON::recognize(const Ref<Resource> &p_resource) const { + return p_resource->get_class_name() == "JSON"; //only json, not inherited } |