first

2023-12-29 19:50:14 +08:00
parent 33811839d2
commit d2a9a90e46
10 changed files with 851 additions and 0 deletions
@@ -0,0 +1,598 @@
+//
+// Created by jun on 2023/12/29.
+//
+
+#include "json.h"
+
+namespace simpleJson {
+
+    /*************************************************class JsonNode*************************************************/
+    JsonNode::JsonNode() : key(""), type(JSON_TYPE_NULL), string_value("") {
+        child_head = nullptr;
+        next = nullptr;
+        prev = nullptr;
+        children_size = 0;
+    }
+
+    JsonNode::JsonNode(JsonValueTypeEnum type, const std::string &key = "") : key(key), type(type), string_value("") {
+        child_head = nullptr;
+        next = nullptr;
+        prev = nullptr;
+        children_size = 0;
+    }
+
+    double JsonNode::get_number_value() const {
+        if (type != JSON_TYPE_INT && type != JSON_TYPE_DOUBLE) {
+            throw std::runtime_error("JsonNode::get_number_value() error: type is not number");
+        } else if (type == JSON_TYPE_INT) {
+            return (double) (value.int_value);
+        } else {
+            return value.double_value;
+        }
+    }
+
+    bool JsonNode::get_bool_value() const {
+        if (type != JSON_TYPE_BOOL) {
+            throw std::runtime_error("JsonNode::get_bool_value() error: type is not bool");
+        } else {
+            return value.bool_value;
+        }
+    }
+
+    std::string JsonNode::get_string_value() const {
+        if (type != JSON_TYPE_STRING) {
+            throw std::runtime_error("JsonNode::get_string_value() error: type is not string");
+        } else {
+            return string_value;
+        }
+    }
+
+    JsonNode &JsonNode::get_object_value() {
+        if (type != JSON_TYPE_OBJECT) {
+            throw std::runtime_error("JsonNode::get_object_value() error: type is not object");
+        } else {
+            return *this;
+        }
+    }
+
+    int JsonNode::get_children_size() const {
+        if (type != JSON_TYPE_LIST && type != JSON_TYPE_OBJECT) {
+            throw std::runtime_error("JsonNode::get_children_size() error: type is not list or object");
+        } else {
+            return children_size;
+        }
+    }
+
+    void JsonNode::set_value(double _value) {
+        if (type != JSON_TYPE_INT && type != JSON_TYPE_DOUBLE && type != JSON_TYPE_BOOL) {
+            throw std::runtime_error("JsonNode::set_value(double) error: type is not number");
+        } else {
+            value.double_value = 0;
+            if (type == JSON_TYPE_INT) {
+                value.int_value = (int) _value;
+            } else if (type == JSON_TYPE_DOUBLE) {
+                value.double_value = _value;
+            } else {
+                value.bool_value = _value > 0;
+            }
+        }
+        children_size = 0;
+    }
+
+    void JsonNode::set_value(const std::string &_value) {
+        if (type != JSON_TYPE_STRING) {
+            throw std::runtime_error("JsonNode::set_value(string) error: type is not string");
+        } else {
+            string_value = _value;
+        }
+        children_size = 0;
+    }
+
+    void JsonNode::set_key(const std::string &_key) {
+        key = _key;
+    }
+
+    std::string JsonNode::get_key() const {
+        return key;
+    }
+
+    void JsonNode::push_back(simpleJson::JsonNodePtr node) {
+        if (type != JSON_TYPE_LIST && type != JSON_TYPE_OBJECT) {
+            throw std::runtime_error("JsonNode::push_back() error: type is not list or object");
+        } else {
+            if (child_head == nullptr) {
+                child_head = node;
+                node->prev = nullptr;
+                node->next = nullptr;
+            } else {
+                JsonNodePtr tail = child_head;
+                while (tail->next != nullptr) {
+                    tail = tail->next;
+                }
+                tail->next = node;
+                node->prev = tail;
+                node->next = nullptr;
+            }
+            children_size++;
+        }
+    }
+
+    void JsonNode::push_front(simpleJson::JsonNodePtr node) {
+        if (type != JSON_TYPE_LIST && type != JSON_TYPE_OBJECT) {
+            throw std::runtime_error("JsonNode::push_front() error: type is not list or object");
+        } else {
+            if (child_head == nullptr) {
+                child_head = node;
+                node->prev = nullptr;
+                node->next = nullptr;
+            } else {
+                child_head->prev = node;
+                node->next = child_head;
+                node->prev = nullptr;
+                child_head = node;
+            }
+            children_size++;
+        }
+    }
+
+    void JsonNode::clear() {
+        if (type != JSON_TYPE_LIST && type != JSON_TYPE_OBJECT) {
+            throw std::runtime_error("JsonNode::clear() error: type is not list or object");
+        } else {
+            child_head = nullptr;
+            children_size = 0;
+        }
+    }
+
+    bool JsonNode::set_list(int _size) {
+        if (type == JSON_TYPE_NULL) {
+            setValueType(JSON_TYPE_LIST);
+        }
+        if (type != JSON_TYPE_LIST) {
+            throw std::runtime_error("JsonNode::set_list() error: type is not list");
+        }
+        try {
+            clear();
+            for (int i = 0; i < _size; i++) {
+                push_back(JsonNodePtr(new JsonNode(JSON_TYPE_NULL)));
+            }
+            children_size = _size;
+        } catch (std::exception &e) {
+            std::cerr << e.what() << std::endl;
+            return false;
+        }
+        return true;
+    }
+
+    JsonNode &JsonNode::list_get(int index) {
+        if (type != JSON_TYPE_LIST) {
+            throw std::runtime_error("JsonNode::list_get() error: type is not list");
+        } else if (index < 0 || index >= children_size) {
+            throw std::runtime_error("JsonNode::list_get() error: index out of range");
+        } else {
+            JsonNodePtr node = child_head;
+            for (int i = 0; i < index; i++) {
+                node = node->next;
+            }
+            return *node;
+        }
+    }
+
+    void JsonNode::list_insert(int index, simpleJson::JsonNodePtr node) {
+        if (type != JSON_TYPE_LIST) {
+            throw std::runtime_error("JsonNode::list_insert() error: type is not list");
+        } else if (index < 0 || index > children_size) {
+            throw std::runtime_error("JsonNode::list_insert() error: index out of range");
+        } else {
+            if (index == 0) {
+                push_front(node);
+            } else if (index == children_size) {
+                push_back(node);
+            } else {
+                JsonNodePtr p = child_head;
+                for (int i = 0; i < index; i++) {
+                    p = p->next;
+                }
+                node->prev = p->prev;
+                node->next = p;
+                p->prev->next = node;
+                p->prev = node;
+                children_size++;
+            }
+        }
+    }
+
+    void JsonNode::list_erase(int index) {
+        if (type != JSON_TYPE_LIST) {
+            throw std::runtime_error("JsonNode::list_erase() error: type is not list");
+        } else if (index < 0 || index >= children_size) {
+            throw std::runtime_error("JsonNode::list_erase() error: index out of range");
+        } else {
+            if (index == 0) {
+                child_head = child_head->next;
+                child_head->prev = nullptr;
+            } else if (index == children_size - 1) {
+                JsonNodePtr p = child_head;
+                for (int i = 0; i < index - 1; i++) {
+                    p = p->next;
+                }
+                p->next = nullptr;
+            } else {
+                JsonNodePtr p = child_head;
+                for (int i = 0; i < index; i++) {
+                    p = p->next;
+                }
+                p->prev->next = p->next;
+                p->next->prev = p->prev;
+            }
+            children_size--;
+        }
+    }
+
+    bool JsonNode::obj_has_item(const std::string &key) {
+        if (type != JSON_TYPE_OBJECT) {
+            throw std::runtime_error("JsonNode::obj_has_item() error: type is not object");
+        } else {
+            JsonNodePtr p = child_head;
+            while (p != nullptr) {
+                if (p->key == key) {
+                    return true;
+                }
+                p = p->next;
+            }
+            return false;
+        }
+    }
+
+    JsonNode& JsonNode::obj_get(const std::string &key) {
+        if (type != JSON_TYPE_OBJECT) {
+            throw std::runtime_error("JsonNode::obj_get() error: type is not object");
+        } else {
+            JsonNodePtr p = child_head;
+            while (p != nullptr) {
+                if (p->key == key) {
+                    return *p;
+                }
+                p = p->next;
+            }
+            throw std::runtime_error("JsonNode::obj_get() error: key \""+key+"\" not found");
+        }
+    }
+
+    void JsonNode::obj_set(simpleJson::JsonNodePtr node) {
+        if (type != JSON_TYPE_OBJECT) {
+            throw std::runtime_error("JsonNode::obj_set() error: type is not object");
+        } else {
+            if (obj_has_item(node->key)) {
+                obj_get(node->key) = *node;
+            } else {
+                push_back(node);
+            }
+        }
+    }
+
+    void JsonNode::to_json_string(std::string &_dst_str, bool _print_key, int _tab_dep, bool _one_line) const {
+        for (int i = 0; i < _tab_dep; i++) {
+            _dst_str += "\t";
+        }
+        if (key.size() != 0 && _print_key) {
+            _dst_str += "\"" + key + "\":";
+        }
+        int dep = _one_line ? 0 : _tab_dep+1;
+        switch (type) {
+            case JSON_TYPE_INT: {
+                _dst_str += std::to_string(value.int_value);
+                break;
+            }
+            case JSON_TYPE_DOUBLE: {
+                _dst_str += std::to_string(value.double_value);
+                break;
+            }
+            case JSON_TYPE_BOOL: {
+                _dst_str += value.bool_value ? "true" : "false";
+                break;
+            }
+            case JSON_TYPE_STRING: {
+                _dst_str += "\"" + string_value + "\"";
+                break;
+            }
+            case JSON_TYPE_LIST: {
+                _dst_str += "[";
+                if (!_one_line) {
+                    _dst_str += "\n";
+                }
+                JsonNodePtr p = child_head;
+                while (p != nullptr) {
+                    p->to_json_string(_dst_str, false, dep, _one_line);
+                    if (p->next != nullptr) {
+                        _dst_str += ",";
+                    }
+                    if (!_one_line) {
+                        _dst_str += "\n";
+                    }
+                    p = p->next;
+                }
+                for (int i = 0; i < _tab_dep; i++) {
+                    _dst_str += "\t";
+                }
+                _dst_str += "]";
+                break;
+            }
+            case JSON_TYPE_OBJECT: {
+                _dst_str += "{";
+                if (!_one_line) {
+                    _dst_str += "\n";
+                }
+                JsonNodePtr p = child_head;
+                while (p != nullptr) {
+                    p->to_json_string(_dst_str, true, dep, _one_line);
+                    if (p->next != nullptr) {
+                        _dst_str += ",";
+                    }
+                    if (!_one_line) {
+                        _dst_str += "\n";
+                    }
+                    p = p->next;
+                }
+                for (int i = 0; i < _tab_dep; i++) {
+                    _dst_str += "\t";
+                }
+                _dst_str += "}";
+                break;
+            }
+            default:
+                break;
+        }
+
+    }
+
+    JsonNode& JsonNode::operator[](const std::string & key) {
+        if (type == JSON_TYPE_NULL) {
+            setValueType(JSON_TYPE_OBJECT);
+        }
+        if (type != JSON_TYPE_OBJECT) {
+            throw std::runtime_error("JsonNode::operator[]() error: type is not object");
+        } else {
+            if (obj_has_item(key)) {
+                return obj_get(key);
+            } else {
+                JsonNodePtr node = JsonNodePtr(new JsonNode(JSON_TYPE_NULL, key));
+                obj_set(node);
+                return *node;
+            }
+        }
+    }
+
+    JsonNode& JsonNode::operator[](int index) {
+        if (type == JSON_TYPE_NULL) {
+            setValueType(JSON_TYPE_LIST);
+        }
+        if (type != JSON_TYPE_LIST) {
+            throw std::runtime_error("JsonNode::operator[]() error: type is not list");
+        } else {
+            if (index < 0 || index >= children_size) {
+                throw std::runtime_error("JsonNode::operator[]() error: index out of range");
+            } else {
+                return list_get(index);
+            }
+        }
+    }
+
+    double JsonNode::operator=(double _value) {
+        if (type == JSON_TYPE_NULL) {
+            setValueType(JSON_TYPE_DOUBLE);
+        }
+        if (type == JSON_TYPE_DOUBLE)  {
+            value.double_value = _value;
+            return _value;
+        } else if (type == JSON_TYPE_INT) {
+            value.int_value = static_cast<int>(_value);
+            return _value;
+        } else if (type == JSON_TYPE_BOOL) {
+            value.bool_value = _value > 0;
+            return _value;
+        } else {
+            throw std::runtime_error("JsonNode::operator=(double) error: type is not number");
+        }
+    }
+
+    int JsonNode::as_int() const {
+        switch (type) {
+            case JSON_TYPE_INT: {
+                return value.int_value;
+            }
+            case JSON_TYPE_DOUBLE: {
+                return static_cast<int>(value.double_value);
+            }
+            case JSON_TYPE_BOOL: {
+                return value.bool_value ? 1 : 0;
+            }
+            case JSON_TYPE_NULL: {
+                return 0;
+            }
+            default: {
+                throw std::runtime_error("JsonNode::as_int() error: type is not number");
+            }
+        }
+    }
+
+    double JsonNode::as_double() const {
+        switch (type) {
+            case JSON_TYPE_INT: {
+                return static_cast<double>(value.int_value);
+            }
+            case JSON_TYPE_DOUBLE: {
+                return value.double_value;
+            }
+            case JSON_TYPE_BOOL: {
+                return value.bool_value ? 1.0 : 0.0;
+            }
+            case JSON_TYPE_NULL: {
+                return 0.0;
+            }
+            default: {
+                throw std::runtime_error("JsonNode::as_double() error: type is not number");
+            }
+        }
+    }
+
+    std::string JsonNode::as_string() const {
+        switch (type) {
+            case JSON_TYPE_STRING: {
+                return string_value;
+            }
+            case JSON_TYPE_INT: {
+                return std::to_string(value.int_value);
+            }
+            case JSON_TYPE_DOUBLE: {
+                return std::to_string(value.double_value);
+            }
+            case JSON_TYPE_BOOL: {
+                return value.bool_value ? "true" : "false";
+            }
+            case JSON_TYPE_NULL: {
+                return "NULL";
+            }
+            default: {
+                throw std::runtime_error("JsonNode::as_string() error: type is not string");
+            }
+        }
+    }
+
+    std::vector<JsonNodePtr> JsonNode::as_vector()  {
+        std::vector<JsonNodePtr> vec;
+        JsonNodePtr p = child_head;
+        while (p != nullptr) {
+            vec.push_back(p);
+            p = p->next;
+        }
+        return vec;
+    }
+
+    void JsonNode::setValueType(simpleJson::JsonValueTypeEnum _type) {
+            type = _type;
+    }
+/*****************************************************************************************************************/
+
+/***********************************************JsonReader*******************************************************/
+    JsonReader::JsonReader() {
+        src_str = "";
+        src_str_len = 0;
+        curr_ptr = -1;
+        curr_line = 0;
+        curr_col = 0;
+
+        eof = 1;
+    }
+
+    JsonReader::JsonReader(const std::string &_src_str) {
+        src_str = _src_str;
+        src_str_len = src_str.size();
+        if (src_str_len <= 0) {
+            curr_ptr = -1;
+            curr_line = 0;
+            curr_col = 0;
+            eof = 1;
+        } else {
+            curr_ptr = 0;
+            curr_line = 1;
+            curr_col = 1;
+            eof = 0;
+        }
+    }
+
+    JsonReader::JsonReader(std::ifstream & _input_file_stream) {
+        if (!_input_file_stream) {
+            throw std::runtime_error("JsonReader::JsonReader() error: input file stream is not valid");
+        }
+        std::string line = "";
+        while (std::getline(_input_file_stream, line)) {
+            src_str += line + "\n";
+        }
+        src_str_len = src_str.size();
+        if (src_str_len <= 0) {
+            curr_ptr = -1;
+            curr_line = 0;
+            curr_col = 0;
+            eof = 1;
+        } else {
+            curr_ptr = 0;
+            curr_line = 1;
+            curr_col = 1;
+            eof = 0;
+        }
+    }
+
+    char JsonReader::curr_char() const {
+        if (curr_ptr < 0 || curr_ptr >= src_str_len) {
+            throw std::runtime_error("JsonReader::curr_char() error: current pointer out of range");
+        } else {
+            return src_str[curr_ptr];
+        }
+    }
+
+    char JsonReader::get_char() {
+        if (eof) {
+            throw std::runtime_error("JsonReader::get_char() error: end of file");
+        } else {
+            curr_ptr++;
+            if (curr_ptr >= src_str_len) {
+                eof = 1;
+                return '\0';
+            } else {
+                auto ch = src_str[curr_ptr++];
+                if (src_str[curr_ptr] == '\n') {
+                    curr_line++;
+                    curr_col = 1;
+                } else if (src_str[curr_ptr] == '\t') {
+                    curr_col += 4;
+                } else if (src_str[curr_ptr] == '\r') {
+                    curr_col = 0;
+                } else {
+                    curr_col++;
+                }
+
+                if (curr_ptr >= src_str_len) {
+                    eof = 1;
+                }
+                return ch;
+            }
+        }
+    }
+
+    std::string JsonReader::str_ahead(int _len) const {
+        return src_str.substr(curr_ptr, std::min(_len, src_str_len - curr_ptr));
+    }
+
+    std::string JsonReader::get_str(int _len) {
+        auto str = str_ahead(_len);
+        if (curr_ptr >= src_str_len) {
+            throw std::runtime_error("JsonReader::get_str() error: end of file");
+        }
+        curr_ptr += _len;
+        return str;
+    }
+
+    int JsonReader::get_curr_line() const {
+        return curr_line;
+    }
+
+    int JsonReader::get_curr_col() const {
+        return curr_col;
+    }
+
+    void JsonReader::skip_space() {
+        while (curr_ptr < src_str_len && (src_str[curr_ptr] == ' ' || src_str[curr_ptr] == '\t' || src_str[curr_ptr] == '\n' || src_str[curr_ptr] == '\r')) {
+            get_char();
+        }
+        if (curr_ptr >= src_str_len) {
+            eof = 1;
+        }
+    }
+
+    bool JsonReader::is_eof() const {
+        return eof;
+    }
+/****************************************************************************************************************/
+
+}