140 lines
4.2 KiB
C++
140 lines
4.2 KiB
C++
/// \file json.h Holds all JSON-related headers.
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#pragma once
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#include <string>
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#include <deque>
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#include <map>
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#include <istream>
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#include <vector>
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//empty definition of DTSC::Stream so it can be a friend.
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namespace DTSC {
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class Stream;
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}
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/// JSON-related classes and functions
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namespace JSON {
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/// Lists all types of JSON::Value.
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enum ValueType{
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EMPTY, BOOL, INTEGER, STRING, ARRAY, OBJECT
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};
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class Value;
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//forward declaration for below typedef
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typedef std::map<std::string, Value>::iterator ObjIter;
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typedef std::deque<Value>::iterator ArrIter;
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typedef std::map<std::string, Value>::const_iterator ObjConstIter;
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typedef std::deque<Value>::const_iterator ArrConstIter;
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/// A JSON::Value is either a string or an integer, but may also be an object, array or null.
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class Value{
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private:
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ValueType myType;
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long long int intVal;
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std::string strVal;
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std::deque<Value> arrVal;
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std::map<std::string, Value> objVal;
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public:
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//friends
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friend class DTSC::Stream; //for access to strVal
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//constructors
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Value();
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Value(std::istream & fromstream);
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Value(const std::string & val);
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Value(const char * val);
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Value(long long int val);
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Value(bool val);
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//comparison operators
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bool operator==(const Value &rhs) const;
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bool operator!=(const Value &rhs) const;
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//assignment operators
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Value & operator=(const std::string &rhs);
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Value & operator=(const char * rhs);
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Value & operator=(const long long int &rhs);
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Value & operator=(const int &rhs);
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Value & operator=(const unsigned int &rhs);
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Value & operator=(const bool &rhs);
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//converts to basic types
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operator long long int() const;
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operator std::string() const;
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operator bool() const;
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const std::string asString() const;
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const long long int asInt() const;
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const bool asBool() const;
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const std::string & asStringRef() const;
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const char * c_str() const;
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//array operator for maps and arrays
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Value & operator[](const std::string i);
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Value & operator[](const char * i);
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Value & operator[](unsigned int i);
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const Value & operator[](const std::string i) const;
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const Value & operator[](const char * i) const;
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const Value & operator[](unsigned int i) const;
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//handy functions and others
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std::string toPacked();
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void netPrepare();
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std::string & toNetPacked();
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std::string toString() const;
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std::string toPrettyString(int indentation = 0) const;
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void append(const Value & rhs);
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void prepend(const Value & rhs);
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void shrink(unsigned int size);
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void removeMember(const std::string & name);
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bool isMember(const std::string & name) const;
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bool isInt() const;
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bool isString() const;
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bool isBool() const;
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bool isObject() const;
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bool isArray() const;
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bool isNull() const;
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ObjIter ObjBegin();
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ObjIter ObjEnd();
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ArrIter ArrBegin();
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ArrIter ArrEnd();
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ObjConstIter ObjBegin() const;
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ObjConstIter ObjEnd() const;
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ArrConstIter ArrBegin() const;
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ArrConstIter ArrEnd() const;
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unsigned int size() const;
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void null();
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};
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Value fromDTMI2(std::string data);
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Value fromDTMI2(const unsigned char * data, unsigned int len, unsigned int &i);
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Value fromDTMI(std::string data);
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Value fromDTMI(const unsigned char * data, unsigned int len, unsigned int &i);
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Value fromString(std::string json);
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Value fromFile(std::string filename);
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template <typename T>
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std::string encodeVector(T begin, T end){
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std::string result;
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for( T it = begin; it != end; it++){
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long long int tmp = (*it);
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while(tmp >= 0xFFFF){
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result += (char)0xFF;
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result += (char)0xFF;
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tmp -= 0xFFFF;
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}
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result += (char)(tmp / 256);
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result += (char)(tmp % 256);
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}
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return result;
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}
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template <typename T>
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void decodeVector( std::string input, T & result ){
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result.clear();
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unsigned int tmp = 0;
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for( int i = 0; i < input.size(); i += 2){
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unsigned int curLen = (input[i] << 8) + input[i + 1];
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tmp += curLen;
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if (curLen != 0xFFFF){
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result.push_back(tmp);
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tmp = 0;
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}
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}
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}
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}
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