443 lines
8.9 KiB
C++
443 lines
8.9 KiB
C++
#include <stdio.h>
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#include <stdlib.h>
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#include <math.h>
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#include <stdarg.h>
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#include "Sys.h"
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/******************************** Object ********************************/
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// 输出对象的字符串表示方式
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String& Object::ToStr(String& str) const
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{
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const char* name = typeid(*this).name();
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while(*name >= '0' && *name <= '9') name++;
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str.Set(name);
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return str;
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}
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// 输出对象的字符串表示方式。支持RVO优化。
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// 该方法直接返回给另一个String作为初始值，只有一次构造，没有多余构造、拷贝和析构。
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String Object::ToString() const
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{
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String str;
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ToStr(str);
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return str;
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}
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void Object::Show(bool newLine) const
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{
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//String str;
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// 为了减少堆分配，采用较大的栈缓冲区
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char cs[0x200];
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String str(cs, ArrayLength(cs));
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str.SetLength(0);
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ToStr(str);
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str.Show(newLine);
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}
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/*Type Object::GetType() const
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{
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return Type(&typeid(*this));
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}*/
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/******************************** Type ********************************/
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/*Type::Type(type_info* ti)
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{
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_info = ti;
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const char* name = typeid(*this).name();
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while(*name >= '0' && *name <= '9') name++;
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Name.Set(name);
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}*/
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/******************************** ByteArray ********************************/
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ByteArray::ByteArray(const byte* data, int length, bool copy) : Array(0)
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{
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if(copy)
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Copy(data, length);
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else
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Set(data, length);
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}
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// 字符串转为字节数组
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ByteArray::ByteArray(String& str) : Array(0)
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{
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char* p = str.GetBuffer();
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Set((byte*)p, str.Length());
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}
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// 不允许修改，拷贝
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ByteArray::ByteArray(const String& str) : Array(0)
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{
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const char* p = str.GetBuffer();
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//Copy((const byte*)p, str.Length());
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Set((const byte*)p, str.Length());
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}
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// 重载等号运算符，使用外部指针、内部长度，用户自己注意安全
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ByteArray& ByteArray::operator=(const byte* data)
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{
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Set(data, Length());
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return *this;
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}
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// 显示十六进制数据，指定分隔字符
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String& ByteArray::ToHex(String& str, char sep, int newLine) const
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{
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byte* buf = GetBuffer();
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// 拼接在字符串后面
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for(int i=0; i < Length(); i++, buf++)
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{
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str.Append(*buf);
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if(i < Length() - 1)
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{
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if(newLine > 0 && (i + 1) % newLine == 0)
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str += "\r\n";
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else if(sep != '\0')
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str.Append(sep);
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}
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}
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return str;
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}
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// 显示十六进制数据，指定分隔字符
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String ByteArray::ToHex(char sep, int newLine) const
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{
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String str;
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return ToHex(str, sep, newLine);
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}
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// 保存到普通字节数组，首字节为长度
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int ByteArray::Load(const byte* data, int maxsize)
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{
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/*// 压缩编码整数最大4字节
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Stream ms(data, 4);
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_Length = ms.ReadEncodeInt();
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return Copy(data + ms.Position(), _Length);*/
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_Length = data[0] <= maxsize ? data[0] : maxsize;
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return Copy(data + 1, _Length);
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}
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// 从普通字节数据组加载，首字节为长度
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int ByteArray::Save(byte* data, int maxsize) const
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{
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/*// 压缩编码整数最大4字节
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Stream ms(data, 4);
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ms.WriteEncodeInt(_Length);
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return CopyTo(data + ms.Position(), _Length);*/
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assert_param(_Length <= 0xFF);
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int len = _Length <= maxsize ? _Length : maxsize;
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data[0] = len;
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return CopyTo(data + 1, len);
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}
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String& ByteArray::ToStr(String& str) const
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{
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return ToHex(str, '-', 0x20);
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}
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// 显示对象。默认显示ToString
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void ByteArray::Show(bool newLine) const
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{
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/*// 每个字节后面带一个横杠，有换行的时候两个字符，不带横杠
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int len = Length() * 2;
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if(sep != '\0') len += Length();
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if(newLine > 0) len += Length() / newLine;*/
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// 采用栈分配然后复制，避免堆分配
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char cs[256];
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String str(cs, ArrayLength(cs));
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// 清空字符串，变成0长度，因为ToHex内部是附加
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str.Clear();
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// 如果需要的缓冲区超过512，那么让它自己分配好了
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ToHex(str, '-', 0x20);
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str.Show(newLine);
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}
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ushort ByteArray::ToUInt16() const
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{
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byte* p = GetBuffer();
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// 字节对齐时才能之前转为目标整数
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if(((int)p & 0x01) == 0) return *(ushort*)p;
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return p[0] | (p[1] << 8);
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}
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uint ByteArray::ToUInt32() const
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{
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byte* p = GetBuffer();
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// 字节对齐时才能之前转为目标整数
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if(((int)p & 0x03) == 0) return *(uint*)p;
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return p[0] | (p[1] << 8) | (p[2] << 0x10) | (p[3] << 0x18);
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}
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ulong ByteArray::ToUInt64() const
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{
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byte* p = GetBuffer();
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// 字节对齐时才能之前转为目标整数
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if(((int)p & 0x07) == 0) return *(ulong*)p;
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uint n1 = p[0] | (p[1] << 8) | (p[2] << 0x10) | (p[3] << 0x18);
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p += 4;
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uint n2 = p[0] | (p[1] << 8) | (p[2] << 0x10) | (p[3] << 0x18);
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return n1 | ((ulong)n2 << 0x20);
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}
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void ByteArray::Write(ushort value, int index)
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{
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Copy((byte*)&value, sizeof(ushort), index);
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}
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void ByteArray::Write(short value, int index)
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{
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Copy((byte*)&value, sizeof(short), index);
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}
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void ByteArray::Write(uint value, int index)
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{
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Copy((byte*)&value, sizeof(uint), index);
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}
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void ByteArray::Write(int value, int index)
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{
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Copy((byte*)&value, sizeof(int), index);
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}
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void ByteArray::Write(ulong value, int index)
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{
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Copy((byte*)&value, sizeof(ulong), index);
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}
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/******************************** String ********************************/
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// 输出对象的字符串表示方式
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String& String::ToStr(String& str) const
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{
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// 把当前字符串复制到目标字符串后面
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str.Copy(*this, str.Length());
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return (String&)*this;
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}
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// 输出对象的字符串表示方式
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String String::ToString() const
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{
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return *this;
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}
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// 清空已存储数据。长度放大到最大容量
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String& String::Clear()
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{
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Array::Clear();
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_Length = 0;
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return *this;
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}
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String& String::Append(char ch)
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{
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Copy(&ch, 1, Length());
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return *this;
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}
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String& String::Append(const char* str, int len)
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{
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Copy(str, 0, Length());
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return *this;
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}
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char* _itoa(int value, char* str, int radix, int width = 0)
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{
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if (radix > 36 || radix <= 1) return 0;
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// 先处理符号
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uint v;
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bool sign = (radix == 10 && value < 0);
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if (sign)
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v = -value;
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else
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v = (uint)value;
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// 从低位数字开始，转为字符以后写入临时字符数组
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char tmp[33];
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char* tp = tmp;
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while (v || tp == tmp)
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{
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int i = v % radix;
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v = v / radix;
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if (i < 10)
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*tp++ = i + '0';
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else
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*tp++ = i + 'A' - 10;
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}
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char* sp = str;
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// 修正宽度
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if(width > 0)
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{
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width -= tp - tmp;
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if (sign) width--;
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while(width-- > 0) *sp++ = '0';
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}
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// 写入符号
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if (sign) *sp++ = '-';
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// 倒序写入目标字符串
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while (tp > tmp)
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*sp++ = *--tp;
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*sp = 0;
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return str;
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}
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// 写入整数，第二参数指定宽带，不足时补零
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String& String::Append(int value, int radix, int width)
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{
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char ch[16];
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_itoa(value, ch, radix, width);
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return Append(ch);
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}
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String& String::Append(byte bt)
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{
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int k = Length();
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byte b = bt >> 4;
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SetAt(k++, b > 9 ? ('A' + b - 10) : ('0' + b));
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b = bt & 0x0F;
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SetAt(k++, b > 9 ? ('A' + b - 10) : ('0' + b));
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return *this;
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}
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String& String::Append(ByteArray& bs)
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{
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bs.ToHex(*this);
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return *this;
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}
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// 调试输出字符串
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void String::Show(bool newLine) const
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{
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int len = Length();
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if(!len) return;
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// C格式字符串以0结尾
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char* p = GetBuffer();
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if(p[len] != 0 && !IN_ROM_SECTION(p)) p[len] = 0;
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debug_printf("%s", p);
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if(newLine) debug_printf("\r\n");
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}
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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& String::Format(const char* format, ...)
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{
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va_list ap;
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//const char* fmt = format.GetBuffer();
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va_start(ap, format);
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// 无法准确估计长度，大概乘以2处理
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int len = Length();
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CheckCapacity(len + (strlen(format) << 1), len);
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char* p = GetBuffer();
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len = vsnprintf(p + len, Capacity() - len, format, ap);
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_Length += len;
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va_end(ap);
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return *this;
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}
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String& String::Concat(const Object& obj)
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{
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obj.ToStr(*this);
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return *this;
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}
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String& String::Concat(const char* str, int len)
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{
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Copy(str, 0, Length());
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return *this;
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}
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String& String::operator+=(const Object& obj)
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{
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return this->Concat(obj);
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}
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String& String::operator+=(const char* str)
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{
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return this->Concat(str);
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}
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String& operator+(String& str1, const Object& obj)
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{
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return str1.Concat(obj);
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}
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String& operator+(String& str1, const char* str2)
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{
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return str1.Concat(str2);
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}
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/*String operator+(const char* str1, const char* str2)
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{
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String str(str1);
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return str + str2;
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}*/
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String operator+(const char* str, const Object& obj)
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{
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// 要把字符串拷贝过来
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String s;
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s = str;
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s += obj;
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return s;
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}
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String operator+(const Object& obj, const char* str)
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{
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// 要把字符串拷贝过来
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String s;
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obj.ToStr(s);
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s += str;
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return s;
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}
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String& operator+(String& str, char ch) { return str.Append(ch); }
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String& operator+(String& str, byte bt) { return str.Append(bt); }
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String& operator+(String& str, int value) { return str.Append(value); }
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