193 lines
7.1 KiB
C++
193 lines
7.1 KiB
C++
#ifndef __String_H__
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#define __String_H__
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#include "Sys.h"
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#include "Type.h"
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// 字符串助手，主要用于字符串连接
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class StringHelper;
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// 字符串
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class String : public Object
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{
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public:
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String(const char* cstr = "");
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String(const String& str);
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String(String&& rval);
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String(StringHelper&& rval);
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// 外部传入缓冲区供内部使用，注意长度减去零结束符
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String(char* str, int length);
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explicit String(char c);
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explicit String(byte value, byte radix = 10);
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explicit String(int value, byte radix = 10);
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explicit String(uint value, byte radix = 10);
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explicit String(Int64 value, byte radix = 10);
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explicit String(UInt64 value, byte radix = 10);
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explicit String(float value, byte decimalPlaces = 2);
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explicit String(double value, byte decimalPlaces = 2);
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virtual ~String();
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// 内存管理
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bool CheckCapacity(uint size);
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inline uint Length() const { return _Length; }
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inline char* GetBuffer() const { return _Arr; }
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void SetBuffer(const void* str, int length);
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// 为被赋值对象建立一个备份。
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// 如果值为空或无效，或者内存分配失败，字符串将会被标记为无效
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String& operator = (const String& rhs);
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String& operator = (const char* cstr);
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String& operator = (String&& rval);
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String& operator = (StringHelper&& rval);
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// 连接内建类型。如果参数无效则认为连接失败
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bool Concat(const Object& obj);
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bool Concat(const String& str);
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bool Concat(const char* cstr);
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bool Concat(char c);
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bool Concat(byte c, byte radix = 10);
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bool Concat(int num, byte radix = 10);
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bool Concat(uint num, byte radix = 10);
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bool Concat(Int64 num, byte radix = 10);
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bool Concat(UInt64 num, byte radix = 10);
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bool Concat(float num);
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bool Concat(double num);
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/*template<typename T>
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String& operator += (T rhs) {Concat(rhs); return (*this);}*/
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String& operator += (const Object& rhs) {Concat(rhs); return (*this);}
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String& operator += (const String& rhs) {Concat(rhs); return (*this);}
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String& operator += (const char* cstr) {Concat(cstr); return (*this);}
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String& operator += (char c) {Concat(c); return (*this);}
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String& operator += (byte num) {Concat(num); return (*this);}
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String& operator += (int num) {Concat(num); return (*this);}
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String& operator += (uint num) {Concat(num); return (*this);}
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String& operator += (Int64 num) {Concat(num); return (*this);}
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String& operator += (UInt64 num) {Concat(num); return (*this);}
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String& operator += (float num) {Concat(num); return (*this);}
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String& operator += (double num) {Concat(num); return (*this);}
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/*template<typename T>
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friend StringHelper& operator + (const StringHelper& lhs, T rhs)
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{
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auto& a = const_cast<StringHelper&>(lhs);
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if (!a.Concat(rhs)) a.release();
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return a;
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}*/
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friend StringHelper& operator + (const StringHelper& lhs, const Object& rhs);
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friend StringHelper& operator + (const StringHelper& lhs, const String& rhs);
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friend StringHelper& operator + (const StringHelper& lhs, const char* cstr);
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friend StringHelper& operator + (const StringHelper& lhs, char c);
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friend StringHelper& operator + (const StringHelper& lhs, byte num);
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friend StringHelper& operator + (const StringHelper& lhs, int num);
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friend StringHelper& operator + (const StringHelper& lhs, uint num);
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friend StringHelper& operator + (const StringHelper& lhs, Int64 num);
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friend StringHelper& operator + (const StringHelper& lhs, UInt64 num);
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friend StringHelper& operator + (const StringHelper& lhs, float num);
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friend StringHelper& operator + (const StringHelper& lhs, double num);
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//operator bool() const { return _Length > 0; }
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//operator char*() const { return _Arr; }
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int CompareTo(const String& s) const;
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bool Equals(const String& s) const;
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bool Equals(const char* cstr) const;
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bool EqualsIgnoreCase(const String& s) const;
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bool operator == (const String& rhs) const {return Equals(rhs);}
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bool operator == (const char* cstr) const {return Equals(cstr);}
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bool operator != (const String& rhs) const {return !Equals(rhs);}
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bool operator != (const char* cstr) const {return !Equals(cstr);}
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bool operator < (const String& rhs) const;
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bool operator > (const String& rhs) const;
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bool operator <= (const String& rhs) const;
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bool operator >= (const String& rhs) const;
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void SetAt(int index, char c);
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char operator [] (int index) const;
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char& operator [] (int index);
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void GetBytes(byte* buf, int bufsize, int index=0) const;
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ByteArray GetBytes() const;
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ByteArray ToHex() const;
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void ToArray(char* buf, int bufsize, int index=0) const { GetBytes((byte*)buf, bufsize, index); }
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int ToInt() const;
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float ToFloat() const;
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// 输出对象的字符串表示方式
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virtual String& ToStr(String& str) const;
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// 输出对象的字符串表示方式
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virtual String ToString() const;
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// 清空已存储数据。
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virtual void Clear();
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// 调试输出字符串
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virtual void Show(bool newLine = false) const;
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// 格式化字符串，输出到现有字符串后面。方便我们连续格式化多个字符串
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String& Format(const char* format, ...);
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int IndexOf(const char ch, int startIndex = 0) const;
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int IndexOf(const String& str, int startIndex = 0) const;
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int IndexOf(const char* str, int startIndex = 0) const;
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int LastIndexOf(const char ch, int startIndex = 0) const;
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int LastIndexOf(const String& str, int startIndex = 0) const;
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int LastIndexOf(const char* str, int startIndex = 0) const;
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bool StartsWith(const String& str, int startIndex = 0) const;
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bool StartsWith(const char* str, int startIndex = 0) const;
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bool EndsWith(const String& str) const;
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bool EndsWith(const char* str) const;
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typedef void (*StringItem)(const String& item);
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int Split(const String& str, StringItem callback);
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String Substring(int start, int _Length) const;
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String& TrimStart();
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String& TrimEnd();
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String& Trim();
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String& Replace(char find, char replace);
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String& Replace(const String& find, const String& replace);
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String& Remove(int index);
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String& Remove(int index, int count);
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String& ToLower();
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String& ToUpper();
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protected:
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char* _Arr; // 字符数组
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int _Capacity; // 容量，不包含0结束符
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int _Length; // 字符串长度，不包含0结束符
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bool _needFree; // 是否需要释放
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//bool _canWrite; // 是否可写
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char Arr[0x40];
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protected:
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void init();
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void release();
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bool Concat(const char* cstr, uint length);
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String& copy(const char* cstr, uint length);
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void move(String& rhs);
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};
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#define R(str) String(str)
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//String operator+(const char* str1, const char* str2);
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//String operator+(const char* str, const Object& obj);
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//String operator+(const Object& obj, const char* str);
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class StringHelper : public String
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{
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public:
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StringHelper(const String& s) : String(s) {}
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StringHelper(const char* p) : String(p) {}
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StringHelper(char c) : String(c) {}
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StringHelper(byte num) : String(num) {}
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StringHelper(int num) : String(num) {}
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StringHelper(uint num) : String(num) {}
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StringHelper(Int64 num) : String(num) {}
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StringHelper(UInt64 num) : String(num) {}
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StringHelper(float num) : String(num) {}
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StringHelper(double num) : String(num) {}
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};
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#endif
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