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DSTRING.H
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C/C++ Source or Header
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1997-02-14
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210 lines
//---------------------------------------------------------------------------
// dstring.h - support for delphi strings in c++
// (AnsiString and template<sz> SmallString)
//---------------------------------------------------------------------------
// $Revision: 1.29 $
//-------------------------------------------------------------------------
// copyright (c) 1997 Borland International
//----------------------------------------------------------------------------
#ifndef DSTRING_H
#define DSTRING_H
//---------------------------------------------------------------------------
// VCL files must be built with namespace option enabled to eliminate
// ambiguities such as Graphics and Windows TBitmap.
//---------------------------------------------------------------------------
#include <iostream.h>
//---------------------------------------------------------------------------
extern void __fastcall InitExe();
//---------------------------------------------------------------------------
// forward declarations
namespace System
{
class TVarRec;
class __declspec(delphireturn) Currency;
//---------------------------------------------------------------------------
class __declspec(delphireturn) AnsiString
{
friend AnsiString __fastcall operator +(const char*, const AnsiString& rhs);
public:
// the TStringFloatFormat enum is used by FloatToStrF
enum TStringFloatFormat
{ sffGeneral, sffExponent, sffFixed, sffNumber, sffCurrency };
static AnsiString __fastcall StringOfChar(char ch, int count);
static AnsiString __fastcall LoadStr(int ident);
static AnsiString __fastcall FmtLoadStr(int ident, const TVarRec *args,
int size);
static AnsiString __fastcall Format(const AnsiString& format,
const TVarRec *args, int size);
static AnsiString __fastcall FormatFloat(const AnsiString& format,
const long double& value);
static AnsiString __fastcall FloatToStrF(long double value,
TStringFloatFormat format, int precision, int digits);
static AnsiString __fastcall IntToHex(int value, int digits);
static AnsiString __fastcall CurrToStr(Currency value);
static AnsiString __fastcall CurrToStrF(Currency value,
TStringFloatFormat format, int digits);
// Constructors
__fastcall AnsiString(): Data(0) {}
__fastcall AnsiString(const char* src);
__fastcall AnsiString(const AnsiString& src);
__fastcall AnsiString(const char* src, unsigned char len);
__fastcall AnsiString(const wchar_t* src);
__fastcall AnsiString(char src);
__fastcall AnsiString(int src);
__fastcall AnsiString(double src);
// Destructor
__fastcall ~AnsiString();
// Assignments
AnsiString& __fastcall operator =(const AnsiString& rhs);
AnsiString& __fastcall operator +=(const AnsiString& rhs);
//Comparisons
bool __fastcall operator ==(const AnsiString& rhs) const;
bool __fastcall operator !=(const AnsiString& rhs) const;
bool __fastcall operator <(const AnsiString& rhs) const;
bool __fastcall operator >(const AnsiString& rhs) const;
bool __fastcall operator <=(const AnsiString& rhs) const;
bool __fastcall operator >=(const AnsiString& rhs) const;
int __fastcall AnsiCompare(const AnsiString& rhs) const;
int __fastcall AnsiCompareIC(const AnsiString& rhs) const; //ignorecase
// Index
char& __fastcall operator [](const int idx) {return Data[idx-1];}
// Concatenation
AnsiString __fastcall operator +(const AnsiString& rhs) const;
// C string operator
char* __fastcall c_str() const
{return (Data)? Data: "";}
int __fastcall Length() const;
bool __fastcall IsEmpty() const;
// make string unique (refcnt == 1)
void __fastcall Unique();
void __fastcall Insert(const AnsiString& str, int index);
void __fastcall Delete(int index, int count);
void __fastcall SetLength(int newLength);
int __fastcall Pos(const AnsiString& subStr) const;
AnsiString __fastcall LowerCase() const;
AnsiString __fastcall UpperCase() const;
AnsiString __fastcall Trim() const;
AnsiString __fastcall TrimLeft() const;
AnsiString __fastcall TrimRight() const;
AnsiString __fastcall SubString(int index, int count) const;
int __fastcall ToInt() const;
int __fastcall ToIntDef(int defaultValue) const;
double __fastcall ToDouble() const;
//Convert to Unicode
int __fastcall WideCharBufSize() const;
wchar_t* __fastcall WideChar(wchar_t* dest, int destSize) const;
// mbcs support
enum TStringMbcsByteType { mbSingleByte, mbLeadByte, mbTrailByte };
TStringMbcsByteType __fastcall ByteType(int index) const;
bool __fastcall IsLeadByte(int index) const;
bool __fastcall IsTrailByte(int index) const;
bool __fastcall IsDelimiter(const AnsiString& delimiters, int index) const;
bool __fastcall IsPathDelimiter(int index) const;
int __fastcall LastDelimiter(const AnsiString& delimiters) const;
int __fastcall AnsiPos(const AnsiString& subStr) const;
char* __fastcall AnsiLastChar() const;
private:
char *Data;
};
//---------------------------------------------------------------------------
AnsiString __fastcall operator +(const char*, const AnsiString& rhs);
inline ostream& operator <<(ostream& os, const AnsiString& arg)
{os << arg.c_str(); return os;}
istream& operator >>(istream& is, AnsiString& arg);
//---------------------------------------------------------------------------
template <unsigned char sz> class SmallString
{
friend ostream& operator <<(ostream& os, const SmallString& arg)
{os << AnsiString(arg).c_str(); return os;}
friend istream& operator >>(istream& is, SmallString& arg)
{AnsiString s; is >> s; arg = s; return is;}
public:
// Constrctors
__fastcall SmallString(): Len(0) {}
__fastcall SmallString(const char* src)
{
long len = strlen(src);
Len = (unsigned char)((len > sz)? sz: len);
strncpy(Data, src, Len);
}
__fastcall SmallString(const SmallString& src)
{
Len = src.Len;
for (int i = 0; i < Len; i++)
Data[i] = src.Data[i];
}
__fastcall SmallString(const AnsiString& src)
{
long len = src.Length();
Len = (unsigned char)((len > sz)? sz: len);
strncpy(Data, src.c_str(), Len);
}
char& __fastcall operator [](const unsigned char idx)
{return Data[idx-1];}
SmallString& __fastcall operator =(const SmallString& rhs);
__fastcall operator AnsiString() const;
protected:
unsigned char Len;
char Data[sz];
};
//---------------------------------------------------------------------------
// used when SmallStrings are in unions (can't have a ctor)
// must cast DummySmallString to SmallString to do anything useful
template <unsigned char sz> class DummySmallString
{
protected:
unsigned char Len;
char Data[sz];
};
//---------------------------------------------------------------------------
template<unsigned char sz> inline
SmallString& __fastcall SmallString<sz>::operator =(const SmallString& rhs)
{
if (this != &rhs)
{
Len = rhs.Len;
for (int i = 0; i < Len; i++)
Data[i] = rhs.Data[i];
}
return *this;
}
//---------------------------------------------------------------------------
template<unsigned char sz> inline
__fastcall SmallString<sz>::operator AnsiString() const
{
return AnsiString(Data, Len);
}
}
using namespace System;
#endif