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#include "stdafx.h"
#include "account.h"
void *get_entry(char *data,unsigned int cEntries,unsigned int index,unsigned int *length)
{
data_entry *entries = reinterpret_cast<data_entry*>(data);
if (length != 0)
*length = entries[index].length;
return data + sizeof(data_entry) * cEntries + entries[index].position;
}
void *get_V_entry(char *data,unsigned int index, unsigned int *length)
{
return get_entry(data,17,index,length);
}
entry *read_entries(char *data,unsigned int cEntries)
{
data_entry *entries = reinterpret_cast<data_entry*>(data);
entry *fixed = new entry[cEntries];
for(unsigned int i=0;i<cEntries;i++)
{
fixed[i].data = data + sizeof(data_entry) * cEntries + entries[i].position;
fixed[i].length = entries[i].length;
fixed[i].flags = entries[i].flags;
}
return fixed;
}
int align(int i)
{
int mod=i%4;
if (mod==0)
return i;
else
return i + 4 - mod;
}
int write_entries(entry *entries,unsigned int cEntries,char *buffer,unsigned int length)
{
data_entry *pents = reinterpret_cast<data_entry*>(buffer);
int pos = 0;
for(unsigned int i=0;i<cEntries;i++)
{
pents[i].position = pos;
pents[i].length = entries[i].length;
pents[i].flags = entries[i].flags;
char *dataOffset = buffer + sizeof(data_entry) * cEntries + pos;
memcpy(dataOffset,entries[i].data,entries[i].length);
pos += align(entries[i].length);
}
return sizeof(data_entry) * cEntries + pos;
}
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