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// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
/* ######################################################################
HashSumValueTemplate - Generic Storage for a hash value
##################################################################### */
/*}}}*/
#ifndef APTPKG_HASHSUM_TEMPLATE_H
#define APTPKG_HASHSUM_TEMPLATE_H
#include <cstring>
#include <string>
#include <apt-pkg/string_view.h>
#include <apt-pkg/strutl.h>
class FileFd;
template<int N>
class HashSumValue
{
unsigned char Sum[N/8];
public:
// Accessors
bool operator ==(const HashSumValue &rhs) const
{
return memcmp(Sum,rhs.Sum,sizeof(Sum)) == 0;
}
bool operator !=(const HashSumValue &rhs) const
{
return memcmp(Sum,rhs.Sum,sizeof(Sum)) != 0;
}
std::string Value() const
{
char Conv[16] =
{ '0','1','2','3','4','5','6','7','8','9','a','b',
'c','d','e','f'
};
char Result[((N/8)*2)+1];
Result[(N/8)*2] = 0;
// Convert each char into two letters
int J = 0;
int I = 0;
for (; I != (N/8)*2; J++,I += 2)
{
Result[I] = Conv[Sum[J] >> 4];
Result[I + 1] = Conv[Sum[J] & 0xF];
}
return std::string(Result);
}
inline void Value(unsigned char S[N/8])
{
for (int I = 0; I != sizeof(Sum); ++I)
S[I] = Sum[I];
}
inline operator std::string() const
{
return Value();
}
bool Set(APT::StringView Str)
{
return Hex2Num(Str,Sum,sizeof(Sum));
}
inline void Set(unsigned char S[N/8])
{
for (int I = 0; I != sizeof(Sum); ++I)
Sum[I] = S[I];
}
explicit HashSumValue(std::string const &Str)
{
memset(Sum,0,sizeof(Sum));
Set(Str);
}
explicit HashSumValue(APT::StringView const &Str)
{
memset(Sum,0,sizeof(Sum));
Set(Str);
}
APT_HIDDEN explicit HashSumValue(const char *Str)
{
memset(Sum,0,sizeof(Sum));
Set(Str);
}
HashSumValue()
{
memset(Sum,0,sizeof(Sum));
}
};
class SummationImplementation
{
public:
virtual bool Add(const unsigned char *inbuf, unsigned long long inlen) APT_NONNULL(2) = 0;
inline bool Add(const char *inbuf, unsigned long long const inlen) APT_NONNULL(2)
{ return Add(reinterpret_cast<const unsigned char *>(inbuf), inlen); }
inline bool Add(const unsigned char *Data) APT_NONNULL(2)
{ return Add(Data, strlen(reinterpret_cast<const char *>(Data))); }
inline bool Add(const char *Data) APT_NONNULL(2)
{ return Add(reinterpret_cast<const unsigned char *>(Data), strlen(Data)); }
inline bool Add(const unsigned char *Beg, const unsigned char *End) APT_NONNULL(2,3)
{ return Add(Beg, End - Beg); }
inline bool Add(const char *Beg, const char *End) APT_NONNULL(2,3)
{ return Add(reinterpret_cast<const unsigned char *>(Beg), End - Beg); }
bool AddFD(int Fd, unsigned long long Size = 0);
bool AddFD(FileFd &Fd, unsigned long long Size = 0);
};
#endif
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