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/* $Id$ */
/** @file str.hpp */
#ifndef STR_HPP
#define STR_HPP
#include <errno.h>
#include <stdarg.h>
#include "strapi.hpp"
/** Blob based string. */
template <typename Tchar, bool TcaseInsensitive>
struct CStrT : public CBlobT<Tchar>
{
typedef CBlobT<Tchar> base; ///< base class
typedef CStrApiT<Tchar, TcaseInsensitive> Api; ///< string API abstraction layer
typedef typename base::bsize_t bsize_t; ///< size type inherited from blob
typedef typename base::OnTransfer OnTransfer; ///< temporary 'transfer ownership' object type
/** Construction from C zero ended string. */
FORCEINLINE CStrT(const Tchar* str = NULL)
{
AppendStr(str);
}
/** Construction from C string and given number of characters. */
FORCEINLINE CStrT(const Tchar* str, bsize_t num_chars) : base(str, num_chars)
{
base::FixTail();
}
/** Construction from C string determined by 'begin' and 'end' pointers. */
FORCEINLINE CStrT(const Tchar* str, const Tchar* end)
: base(str, end - str)
{
base::FixTail();
}
/** Construction from blob contents. */
FORCEINLINE CStrT(const CBlobBaseSimple& src)
: base(src)
{
base::FixTail();
}
/** Copy constructor. */
FORCEINLINE CStrT(const CStrT& src)
: base(src)
{
base::FixTail();
}
/** Take over ownership constructor */
FORCEINLINE CStrT(const OnTransfer& ot)
: base(ot)
{
}
/** Grow the actual buffer and fix the trailing zero at the end. */
FORCEINLINE Tchar* GrowSizeNC(bsize_t count)
{
Tchar* ret = base::GrowSizeNC(count);
base::FixTail();
return ret;
}
/** Append zero-ended C string. */
FORCEINLINE void AppendStr(const Tchar* str)
{
if (str != NULL && str[0] != '\0') {
base::Append(str, (bsize_t)Api::StrLen(str));
base::FixTail();
}
}
/** Append another CStrT or blob. */
FORCEINLINE void Append(const CBlobBaseSimple& src)
{
if (src.RawSize() > 0) {
base::AppendRaw(src);
base::FixTail();
}
}
/** Assignment from C string. */
FORCEINLINE CStrT& operator = (const Tchar* src)
{
base::Clear();
AppendStr(src);
return *this;
}
/** Assignment from another CStrT or blob. */
FORCEINLINE CStrT& operator = (const CBlobBaseSimple& src)
{
base::Clear();
base::AppendRaw(src);
base::FixTail();
return *this;
}
/** Assignment from another CStrT or blob. */
FORCEINLINE CStrT& operator = (const CStrT& src)
{
base::Clear();
base::AppendRaw(src);
base::FixTail();
return *this;
}
/** Lower-than operator (to support stl collections) */
FORCEINLINE bool operator < (const CStrT &other) const
{
return (Api::StrCmp(base::Data(), other.Data()) < 0);
}
/** Add formated string (like vsprintf) at the end of existing contents. */
int AddFormatL(const Tchar *format, va_list args)
{
bsize_t addSize = Api::StrLen(format);
if (addSize < 16) addSize = 16;
addSize += addSize / 2;
int ret;
int err = 0;
for (;;) {
Tchar *buf = MakeFreeSpace(addSize);
ret = Api::SPrintFL(buf, base::GetReserve(), format, args);
if (ret >= base::GetReserve()) {
/* Greater return than given count means needed buffer size. */
addSize = ret + 1;
continue;
}
if (ret >= 0) {
/* success */
break;
}
err = errno;
if (err != ERANGE && err != ENOENT && err != 0) {
/* some strange failure */
break;
}
/* small buffer (M$ implementation) */
addSize *= 2;
}
if (ret > 0) {
GrowSizeNC(ret);
} else {
base::FixTail();
}
return ret;
}
/** Add formated string (like sprintf) at the end of existing contents. */
int AddFormat(const Tchar *format, ...)
{
va_list args;
va_start(args, format);
int ret = AddFormatL(format, args);
va_end(args);
return ret;
}
/** Assign formated string (like vsprintf). */
int FormatL(const Tchar *format, va_list args)
{
base::Free();
int ret = AddFormatL(format, args);
return ret;
}
/** Assign formated string (like sprintf). */
int Format(const Tchar *format, ...)
{
base::Free();
va_list args;
va_start(args, format);
int ret = AddFormatL(format, args);
va_end(args);
return ret;
}
};
typedef CStrT<char , false> CStrA; ///< Case sensitive ANSI/UTF-8 string
typedef CStrT<char , true > CStrCiA; ///< Case insensitive ANSI/UTF-8 string
typedef CStrT<wchar_t, false> CStrW; ///< Case sensitive unicode string
typedef CStrT<wchar_t, true > CStrCiW; ///< Case insensitive unicode string
#endif /* STR_HPP */
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