// -*- mode: cpp; mode: fold -*- // Description /*{{{*/ // $Id: hashsum_template.h,v 1.3 2001/05/07 05:05:47 jgg Exp $ /* ###################################################################### HashSumValueTemplate - Generic Storage for a hash value ##################################################################### */ /*}}}*/ #ifndef APTPKG_HASHSUM_TEMPLATE_H #define APTPKG_HASHSUM_TEMPLATE_H #include <string> #include <cstring> #include <algorithm> #include <stdint.h> #ifndef APT_8_CLEANER_HEADERS using std::string; using std::min; #endif 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(std::string 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]; }; HashSumValue(std::string 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) = 0; inline bool Add(const char *inbuf, unsigned long long const inlen) { return Add((unsigned char *)inbuf, inlen); }; inline bool Add(const unsigned char *Data) { return Add(Data, strlen((const char *)Data)); }; inline bool Add(const char *Data) { return Add((const unsigned char *)Data, strlen((const char *)Data)); }; inline bool Add(const unsigned char *Beg, const unsigned char *End) { return Add(Beg, End - Beg); }; inline bool Add(const char *Beg, const char *End) { return Add((const unsigned char *)Beg, End - Beg); }; bool AddFD(int Fd, unsigned long long Size = 0); }; #endif