CloverBootloader/rEFIt_UEFI/cpp_foundation/XBuffer.h

534 lines
18 KiB
C++

/*
*
* Created by jief in 1997.
* Copyright (c) 2020 Jief
* All rights reserved.
*
*/
#if !defined(__XBUFFER_H__)
#define __XBUFFER_H__
#include <XToolsConf.h>
#include "XToolsCommon.h"
#include "XRBuffer.h"
#include "XString.h"
#define XBuffer_Super XRBuffer<T>
template <typename T>
class XBuffer : public XBuffer_Super
{
public:
static XBuffer<T> NullXBuffer;
protected:
T*_WData; // same as RData (see XRBuffer)
size_t m_allocatedSize;
void Initialize(const T* p, size_t count, size_t index);
public:
XBuffer() : _WData(NULL), m_allocatedSize(0) { Initialize(NULL, 0, 0); } // ": _WData(NULL), m_allocatedSize(0)" to avoid effc++ warning
XBuffer(const XBuffer<T>& aBuffer) : _WData(NULL), m_allocatedSize(0) { Initialize(aBuffer.data(), aBuffer.size(), aBuffer.index()); }
XBuffer(XRBuffer<T> &aBuffer, size_t pos = 0, size_t count = MAX_XSIZE);
// XBuffer(XBuffer &aBuffer, size_t pos = 0, size_t count = MAX_XSIZE);
XBuffer(const void *p, size_t count);
const XBuffer &operator =(const XRBuffer<T> &aBuffer);
const XBuffer &operator =(const XBuffer &aBuffer);
template<typename IntegralType, enable_if(is_integral(IntegralType))>
void stealValueFrom(T* p, IntegralType count) {
if ( count < 0 ) {
#ifdef JIEF_DEBUG
panic("XBuffer::stealValueFrom : count < 0. System halted\n");
#else
return;
#endif
}
if( _WData ) free(_WData);
m_allocatedSize = count;
XRBuffer<T>::_RData = _WData = p;
XRBuffer<T>::m_size = count;
XRBuffer<T>::_Index = 0;
}
template<typename IntegralType, enable_if(is_integral(IntegralType))>
void stealValueFrom(T* p, IntegralType count, IntegralType allocatedSize) {
if ( count < 0 ) {
panic("XBuffer::stealValueFrom : count < 0. System halted\n");
}
if ( allocatedSize < count ) {
panic("XBuffer::stealValueFrom : allocatedSize < count. System halted\n");
}
if( _WData ) free(_WData);
m_allocatedSize = allocatedSize;
XRBuffer<T>::_RData = _WData = p;
XRBuffer<T>::m_size = count;
XRBuffer<T>::_Index = 0;
}
~XBuffer();
public:
void CheckAllocatedSize(size_t nNewSize, size_t nGrowBy = XBufferGrowByDefault);
void* vdata() const { return (void*)XBuffer_Super::data(); }
const T* data() const { return _WData; }
T* data() { return _WData; }
template<typename IntegralType, enable_if(is_integral(IntegralType))>
const T* data(IntegralType i) const { return XBuffer_Super::data(i); }
template<typename IntegralType, enable_if(is_integral(IntegralType))>
T* data(IntegralType i) { return _WData + i; }
template<typename IntegralType, enable_if(is_integral(IntegralType))>
T* dataSized(IntegralType size) {
if ( size < 0 ) {
#ifdef JIEF_DEBUG
panic("XBuffer::dataSized : size < 0. System halted\n");
#else
return NULL;
#endif
}
CheckAllocatedSize(size, 0);
return data();
}
// void *Data(size_t ui=0) { return _WData+ui; }
// void *DataWithSizeMin(size_t ui, size_t size, size_t nGrowBy=XBufferGrowByDefault) { CheckAllocatedSize(size, nGrowBy); return Data(ui); }
//
// char *CData(size_t ui=0) { return (char *)(_WData+ui); }
// char *CDataWithSizeMin(size_t ui, size_t size, size_t nGrowBy=XBufferGrowByDefault) { CheckAllocatedSize(size, nGrowBy); return CData(ui); }
//
// unsigned char *UCData(size_t ui=0) { return _WData+ui; }
// void *UCDataWithSizeMin(size_t ui, unsigned int size, size_t nGrowBy=XBufferGrowByDefault) { CheckAllocatedSize(size, nGrowBy); return UCData(ui); }
size_t size() const { return XRBuffer<T>::size(); }
template<typename IntegralType, enable_if(is_integral(IntegralType))>
void __setSize(IntegralType size) {
if ( size<0 ) { log_technical_bug("XBuffer::setSize() -> i < 0"); return; }
if ( (unsigned_type(IntegralType))size > MAX_XSIZE ) { log_technical_bug("XBuffer::setSize() -> i > MAX_XSIZE"); return; }
CheckAllocatedSize((unsigned_type(IntegralType))size);
XBuffer_Super::m_size = (unsigned_type(IntegralType))size;
};
/* add value 0 until size is reached */
template<typename IntegralType, enable_if(is_integral(IntegralType))>
void setSize(IntegralType size, const T& elementToCopy) {
if ( size<0 ) { log_technical_bug("XBuffer::setSize() -> i < 0"); return; }
unsigned_type(IntegralType) usize = (unsigned_type(IntegralType))size;
if ( usize > MAX_XSIZE ) { log_technical_bug("XBuffer::setSize() -> i > MAX_XSIZE"); return; }
CheckAllocatedSize(usize);
for ( size_t idx = XBuffer_Super::m_size ; idx < usize ; ++idx ) {
_WData[idx] = elementToCopy;
}
XBuffer_Super::m_size = usize;
};
void setEmpty() { __setSize(0); };
bool operator == (const XBuffer<T>& other) const {
if ( size() != other.size() ) return false;
if ( size() == 0 ) return true;
if ( memcmp(_WData, other._WData, size()) != 0 ) return false;
return true;
}
bool operator != (const XBuffer<T>& other) const { return !(*this == other); }
/* [] */
template<typename IntegralType, enable_if(is_integral(IntegralType))>
T& operator [](IntegralType i)
{
//#ifdef JIEF_DEBUG
if (i < 0) panic("XBuffer::[] : i < 0. System halted\n");
if ( (unsigned_type(IntegralType))i >= size() ) panic("XBuffer::[] : i > _Len. System halted\n");
//#else
// // Cannot return 0, return value type is T, unknown at this stage.
// if (i < 0) return 0;
// if ( (unsigned_type(IntegralType))i >= size() ) return 0;
//#endif
return _WData[(unsigned_type(IntegralType))i];
}
template<typename IntegralType, enable_if(is_integral(IntegralType))>
const T& operator [](IntegralType i) const
{
//#ifdef JIEF_DEBUG
if (i < 0) panic("XBuffer::[] : i < 0. System halted\n");
if ( (unsigned_type(IntegralType))i >= size() ) panic("XBuffer::[] : i > _Len. System halted\n");
//#else
// // Cannot return 0, return value type is T, unknown at this stage.
// if (i < 0) return 0;
// if ( (unsigned_type(IntegralType))i >= size() ) return 0;
//#endif
return _WData[(unsigned_type(IntegralType))i];
}
// unsigned char& operator [](int i) { return UCData()[i]; } // underflow ? overflow ?
// unsigned char& operator [](size_t i) { return UCData()[i]; }
void memset(unsigned char c) {
memset(_WData, c, size());
}
template<typename IntegralType, enable_if(is_integral(IntegralType))>
void memset(unsigned char c, IntegralType count) {
#ifdef JIEF_DEBUG
if (count < 0) panic("XBuffer::memset : count < 0. System halted\n");
#else
if (count < 0) return;
#endif
if ( (unsigned_type(IntegralType))count >= size() ) __setSize(count);
::memset(_WData, c, count);
}
template<typename IntegralType1, typename IntegralType2, enable_if( is_integral(IntegralType1) && is_integral(IntegralType2) )>
void memsetAtPos(IntegralType1 pos, unsigned char c, IntegralType2 count) {
#ifdef JIEF_DEBUG
if (pos < 0) panic("XBuffer::memset : pos < 0. System halted\n");
if (count < 0) panic("XBuffer::memset : count < 0. System halted\n");
#else
if (pos < 0) return;
if (count < 0) return;
#endif
if ( (size_t)pos + (unsigned_type(IntegralType2))count >= size() ) setSize((size_t)pos + (unsigned_type(IntegralType2))count);
::memset(_WData, c, count);
}
void ncpy(const void *buf, size_t len);
void cpy(bool b) { ncpy(&b, sizeof(b)); };
void cpy(char c) { ncpy(&c, sizeof(c)); };
void cpy(unsigned char c) { ncpy(&c, sizeof(c)); };
void cpy(signed char c) { ncpy(&c, sizeof(c)); };
void cpy(signed short s) { ncpy(&s, sizeof(s)); };
void cpy(unsigned short us) { ncpy(&us, sizeof(us)); };
void cpy(signed int i) { ncpy(&i, sizeof(i)); };
void cpy(unsigned int ui) { ncpy(&ui, sizeof(ui)); };
void cpy(signed long l) { ncpy(&l, sizeof(l)); };
void cpy(unsigned long ul) { ncpy(&ul, sizeof(ul)); };
void cpy(signed long long ull) { ncpy(&ull, sizeof(ull)); };
void cpy(unsigned long long ull) { ncpy(&ull, sizeof(ull)); };
void cpy(float f) { ncpy(&f, sizeof(f)); };
void cpy(double d) { ncpy(&d, sizeof(d)); };
void cpy(void* p) { ncpy(&p, sizeof(p)); };
// Cat
void ncat(const void *buf, size_t len);
void cat(bool b) { ncat(&b, sizeof(b)); };
void cat(char c) { ncat(&c, sizeof(c)); };
void cat(unsigned char c) { ncat(&c, sizeof(c)); };
void cat(signed char c) { ncat(&c, sizeof(c)); };
void cat(signed short s) { ncat(&s, sizeof(s)); };
void cat(unsigned short us) { ncat(&us, sizeof(us)); };
void cat(signed int i) { ncat(&i, sizeof(i)); };
void cat(unsigned int ui) { ncat(&ui, sizeof(ui)); };
void cat(signed long l) { ncat(&l, sizeof(l)); };
void cat(unsigned long ul) { ncat(&ul, sizeof(ul)); };
void cat(signed long long ull) { ncat(&ull, sizeof(ull)); };
void cat(unsigned long long ull) { ncat(&ull, sizeof(ull)); };
void cat(float f) { ncat(&f, sizeof(f)); };
void cat(double d) { ncat(&d, sizeof(d)); };
void cat(void* p) { ncat(&p, sizeof(p)); };
protected:
static void transmitS8Printf(const char* buf, unsigned int nbchar, void* context)
{
((XBuffer<T>*)(context))->ncat(buf, nbchar);
}
public:
void vS8Catf(const char* format, XTOOLS_VA_LIST va)
{
vprintf_with_callback(format, va, transmitS8Printf, this);
}
void S8Catf(const char* format, ...) __attribute__((__format__(__printf__, 2, 3)))
{
XTOOLS_VA_LIST va;
XTOOLS_VA_START (va, format);
vS8Catf(format, va);
XTOOLS_VA_END(va);
}
T* forgetDataWithoutFreeing()
{
T* ret = data();
m_allocatedSize = 0;
XRBuffer<T>::_RData = _WData = NULL;
XRBuffer<T>::m_size = 0;
XRBuffer<T>::_Index = 0;
return ret;
}
// void cat(const XString8 &aXString8);
void cat(const XBuffer &unXBuffer) { ncat(unXBuffer.Length()); ncat(unXBuffer.Data(), unXBuffer.Length()); }
void deleteAtPos(unsigned int pos, unsigned int count=1);
const XBuffer &operator += (const XRBuffer<T> &aBuffer);
size_t Sizeof() const;
// bool ReadFileName(const char* FileName, unsigned int AddZeros=0);
bool ReadFromBuf(const char *buf, size_t *idx, size_t count);
bool ReadFromXRBuffer(XRBuffer<T> &unXBuffer);
};
template <typename T>
XBuffer<T> XBuffer<T>::NullXBuffer = XBuffer<T>();
//*************************************************************************************************
template <typename T>
void XBuffer<T>::Initialize(const T* p, size_t count, size_t index)
{
if ( p!=NULL && count>0 )
{
m_allocatedSize = count;
_WData = (T*)malloc(m_allocatedSize);
if ( !_WData ) {
#ifdef JIEF_DEBUG
panic("XBuffer<T>::Initialize(%zu) : malloc returned NULL. System halted\n", count);
#else
return;
#endif
}
memcpy(_WData, p, count);
XRBuffer<T>::_RData = _WData;
XRBuffer<T>::m_size = count;
XRBuffer<T>::_Index = index;
}
else{
m_allocatedSize = 0;
_WData = NULL;
XRBuffer<T>::_RData = NULL;
XRBuffer<T>::m_size = 0;
XRBuffer<T>::_Index = 0;
}
}
//-------------------------------------------------------------------------------------------------
// CheckAllocatedSize
//-------------------------------------------------------------------------------------------------
template <typename T>
void XBuffer<T>::CheckAllocatedSize(size_t nNewSize, size_t nGrowBy)
{
if ( m_allocatedSize < nNewSize )
{
nNewSize += nGrowBy;
_WData = (T*)Xrealloc(_WData, nNewSize*sizeof(T), m_allocatedSize);
if ( !_WData ) {
#ifdef JIEF_DEBUG
panic("XBuffer<T>::CheckAllocatedSize(%zu, %zu) : Xrealloc(%" PRIuPTR " %zu, %zu) returned NULL. System halted\n", nNewSize, nGrowBy, uintptr_t(_WData), nNewSize, m_allocatedSize);
#else
m_allocatedSize = 0;
return;
#endif
}
XRBuffer<T>::_RData = _WData;
m_allocatedSize = nNewSize;
}
}
//-------------------------------------------------------------------------------------------------
// ctor
//-------------------------------------------------------------------------------------------------
template <typename T>
XBuffer<T>::XBuffer(XRBuffer<T> &aXRBuffer, size_t pos, size_t count) : _WData(NULL), m_allocatedSize(0) // initialisation to avoid effc++ warning
{
if ( pos < aXRBuffer.Length() ) {
Initialize(NULL, 0, 0);
}else{
if ( count > aXRBuffer.Length()-pos ) count = aXRBuffer.Length()-pos;
Initialize(aXRBuffer.UCData(pos), count, aXRBuffer.Index());
}
}
//
//template <typename T>
//XBuffer<T>::XBuffer(XBuffer &aXBuffer, size_t pos, size_t count) : _WData(NULL), m_allocatedSize(0) // initialisation to avoid effc++ warning
//{
// if ( pos >= aXBuffer.Length() ) {
// Initialize(NULL, 0, 0);
// }else{
// if ( count > aXBuffer.Length()-pos ) count = aXBuffer.Length()-pos;
// Initialize(aXBuffer.UCData(pos), count, aXBuffer.Index());
// }
//}
template <typename T>
XBuffer<T>::XBuffer(const void *p, size_t count) : _WData(NULL), m_allocatedSize(0) // initialisation to avoid effc++ warning
{
Initialize((const unsigned char*)p, count, 0);
}
template <typename T>
XBuffer<T>::~XBuffer()
{
free(_WData);
}
//-------------------------------------------------------------------------------------------------
// operator =, +=
//-------------------------------------------------------------------------------------------------
template <typename T>
const XBuffer<T>& XBuffer<T>::operator =(const XRBuffer<T> &aBuffer)
{
//TRACE("Operator =const XBuffer&\n");
Cpy(aBuffer.Data(), aBuffer.Length());
SetIndex(aBuffer.Index());
return *this;
}
template <typename T>
const XBuffer<T>& XBuffer<T>::operator =(const XBuffer<T> &aBuffer)
{
//TRACE("Operator =const XBuffer&\n");
ncpy(aBuffer.data(), aBuffer.size());
XBuffer_Super::setIndex(aBuffer.index());
return *this;
}
template <typename T>
const XBuffer<T> &XBuffer<T>::operator +=(const XRBuffer<T> &aBuffer)
{
//TRACE("Operator +=const XBuffer&\n");
Cat(aBuffer.Data(), aBuffer.Length());
return *this;
}
//-------------------------------------------------------------------------------------------------
// Cpy, Cat, Delete
//-------------------------------------------------------------------------------------------------
template <typename T>
void XBuffer<T>::ncpy(const void *buf, size_t len)
{
if ( buf && len > 0 ) {
__setSize(len);
memcpy(data(), buf, len);
}
}
template <typename T>
void XBuffer<T>::ncat(const void *buf, size_t len)
{
if ( buf && len > 0 ) {
CheckAllocatedSize(size()+len);
memcpy(data(size()), buf, len);
__setSize(size()+len);
}
}
//
//template <typename T>
//void XBuffer<T>::cat(const XString8 &aXString8)
//{
// cat(aXString8.sizeInBytes());
// cat(aXString8.s(), aXString8.sizeInBytes());
//};
template <typename T>
void XBuffer<T>::deleteAtPos(unsigned int pos, unsigned int count)
{
if ( pos < size() ) {
if ( size() - pos <= count ) {
memmove( _WData+pos, _WData+pos+count, size()-pos-count);
__setSize(size()-count);
}else{
__setSize(pos);
}
}
}
//-------------------------------------------------------------------------------------------------
// ReadFrom
//-------------------------------------------------------------------------------------------------
//bool XBuffer<T>::ReadFileName(const char* FileName, unsigned int AddZeros)
//{
// FILE *fp;
// long int ulen;
// unsigned int len;
//
// fp = fopen(FileName, "rb");
// if ( fp == NULL ) {
// SetLastErrorMsgf("Impossible d'ouvrir le fichier en lecture '%s'", FileName);
// goto finally;
// }
//
// fseek(fp, 0, 2); // Seek to end of file
// ulen = ftell(fp);
// if ( ulen <= 0 ) {
// SetLastErrorMsgf("Impossible d'avoir la longueur du fichier '%s'", FileName);
// goto finally;
// }
//
// len = (unsigned int)ulen;
// fseek(fp, 0, 0);
//
// if ( fread(CDataWithSizeMin(0, len+AddZeros), 1, len, fp) != len ) {
// SetLastErrorMsgf("Impossible de lire %d octets du fichier '%s'", len, FileName);
// goto finally;
// }
// SetLength(len);
// SetIndex(0);
// if ( fclose(fp) != 0 ) {
// SetLastErrorMsgf("Impossible de fermer les fichier '%s'", FileName);
// goto finally;
// }
// {for ( unsigned int ui=len ; ui<len+AddZeros ; ui+=1 ) *CData(ui) = 0;}
// return YES;
// finally:
// if ( fp != NULL ) fclose(fp);
// SetLength(0);
// return false;
//
//}
//bool XBuffer<T>::ReadFromFILE(FILE *fp)
//{
// unsigned int longueur;
//
// if ( fread(&longueur, sizeof(longueur), 1, fp) != 1 ) goto fin;
// if ( longueur > 0 && fread(DataWithSizeMin(0, longueur, 0), longueur, 1, fp) != 1 ) goto fin;
// SetLength(longueur);
// SetIndex(0);
// return OUI;
// fin:
// SetNull();
// return NON;
//}
template <typename T>
bool XBuffer<T>::ReadFromXRBuffer(XRBuffer<T> &unXBuffer)
{
size_t longueur;
if ( !unXBuffer.GetSize_t(&longueur) ) return false;
if ( !unXBuffer.Get(dataSized(longueur), longueur) ) return false; // GrowBy (param 3 of DataWithSizeMin is 0 to avoid memory waste
setSize(longueur);
XBuffer_Super::setIndex(0);
return true;
}
template <typename T>
bool XBuffer<T>::ReadFromBuf(const char *buf, size_t *idx, size_t count)
{
size_t longueur;
if ( count-*idx >= sizeof(longueur) ) {
longueur = *((size_t *)(buf+*idx));
*idx += sizeof(longueur);
if ( longueur > 0 && count-*idx>=longueur ) memcpy(dataSized(longueur), buf+*idx, longueur);
*idx += longueur;
setSize(longueur);
XBuffer_Super::setIndex(0);
return true;
}else{
setEmpty();
return false;
}
}
#endif