97 lines
2.2 KiB
C++
97 lines
2.2 KiB
C++
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#include "EW_state.h"
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#include <cstring>
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#include <algorithm>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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namespace EW {
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NewStateDummy::NewStateDummy()
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:length(0)
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{
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}
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void NewStateDummy::Save(const void *ptr, size_t size, const char *name)
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{
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length += size;
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}
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void NewStateDummy::Load(void *ptr, size_t size, const char *name)
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{
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}
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NewStateExternalBuffer::NewStateExternalBuffer(char *buffer, long maxlength)
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:buffer(buffer), length(0), maxlength(maxlength)
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{
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}
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void NewStateExternalBuffer::Save(const void *ptr, size_t size, const char *name)
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{
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if (maxlength - length >= (long)size)
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{
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std::memcpy(buffer + length, ptr, size);
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}
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length += size;
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}
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void NewStateExternalBuffer::Load(void *ptr, size_t size, const char *name)
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{
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char *dst = static_cast<char *>(ptr);
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if (maxlength - length >= (long)size)
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{
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std::memcpy(dst, buffer + length, size);
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}
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length += size;
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}
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NewStateExternalFunctions::NewStateExternalFunctions(const FPtrs *ff)
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:Save_(ff->Save_),
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Load_(ff->Load_),
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EnterSection_(ff->EnterSection_),
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ExitSection_(ff->ExitSection_)
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{
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}
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void NewStateExternalFunctions::Save(const void *ptr, size_t size, const char *name)
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{
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Save_(ptr, size, name);
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}
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void NewStateExternalFunctions::Load(void *ptr, size_t size, const char *name)
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{
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Load_(ptr, size, name);
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}
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void NewStateExternalFunctions::EnterSection(const char *name, ...)
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{
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//analysis: multiple passes to generate string not ideal, but there arent many sections.. so it should be OK. improvement would be special vararg overload
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va_list ap;
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va_start(ap,name);
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char easybuf[32];
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int size = vsnprintf(easybuf,0,name,ap);
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char *ptr = easybuf;
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if(size>31)
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ptr = (char*)malloc(size+1);
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vsprintf(ptr,name,ap);
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EnterSection_(ptr);
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if(ptr != easybuf)
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free(ptr);
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va_end(ap);
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}
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void NewStateExternalFunctions::ExitSection(const char *name, ...)
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{
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va_list ap;
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va_start(ap,name);
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char easybuf[32];
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int size = vsnprintf(easybuf,0,name,ap);
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char *ptr = easybuf;
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if(size>31)
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ptr = (char*)malloc(size+1);
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vsprintf(ptr,name,ap);
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ExitSection_(ptr);
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if(ptr != easybuf)
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free(ptr);
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va_end(ap);
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}
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}
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