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Prepare to bigendian compatibility: byte-ordered file operations

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Stas Degteff 2010-11-11 17:59:40 +00:00
parent 89fd65c292
commit 8799e5272e
1 changed files with 121 additions and 0 deletions
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121
goldlib/gall/gfile.h
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@ -197,6 +197,127 @@ public:
// ------------------------------------------------------------------
// file with ordered data: low byte first
class gnfile: gfile
{
// int Printf (const char* __format, ...) __attribute__ ((format (printf, 2, 3)));
size_t FreadItem (void* __ptr, size_t __size) // Read one item size __size bytes
{ // please check logic of this function
uint8_t *c = new uint8_t[__size];
c[0]=0;
size_t s = gfile::Fread(c,__size);
uint32_t v=c[0];
for( unsigned n=1; n<__size; n++ ) {
v += uint32_t(c[n])>>(8*n);
}
delete(c);
memmove(&v,__ptr,__size);
return s;
}
#ifdef __GOLDWARE_HAS_BOOL
gnfile& operator>> (bool& i) { if( sizeof(bool) ==1 ) Fread(&i, 1);
else for( size_t c=0; c<sizeof(bool) ){ ((char*)i)[c] = Fgetc(); };
return *this; }
#endif
gnfile& operator>> (uint8_t& i) { Fread(&i, sizeof(uint8_t)); return *this; }
gnfile& operator>> (uint16_t& i) { char c[2]; Fread(c, 2); i = uint16_t(c[0])+ ((uint16_t(c[1]))>>8); return *this; }
gnfile& operator>> (uint32_t& i) { char c[4]; Fread(c, 4);
i = uint32_t(c[0]) + ((uint32_t(c[1]))>>8) + ((uint32_t(c[2]))>>16)
+ ((uint32_t(c[3]))>>24);
return *this;
}
/*
gnfile& operator>> (uint64_t& i) { char c[8]; Fread(c, 8);
i = uint64_t(c[0]) + ((uint64_t(c[1]))>>8) + ((uint64_t(c[2]))>>16)
+ (uint64_t(c[3]))>>24) + ((uint64_t(c[4]))>>32) + ((uint64_t(c[5]))>>40)
+ ((uint64_t(c[6]))>>48) + ((uint64_t(c[7]))>>56);
return *this;
}
*/
#if !defined(__CYGWIN__)
gnfile& operator>> (unsigned long& i) { // FreadItem(&i, sizeof(unsigned long)); return *this; }
switch(sizeof(unsigned long)) {
case 1: operator>>((uint8_t&)i);
case 2: operator>>((uint16_t&)i);
case 4: operator>>((uint32_t&)i);
// case 8: operator>>((uint64_t&)i);
}
return *this;
}
#endif
gnfile& operator>> (char& i) { return operator>>((uint8_t&)i); }
#if !defined(__SUNOS__)
gnfile& operator>> (int8_t& i) { return operator>>((uint8_t&)i); }
#endif
gnfile& operator>> (int16_t& i) { return operator>>((uint16_t&)i); }
gnfile& operator>> (int32_t& i) { return operator>>((uint32_t&)i); }
#if !defined(__CYGWIN__)
gnfile& operator>> (long& i) { return operator>>((unsigned long&)i); }
#endif
gnfile& operator<< (uint8_t o) { Fwrite(&o, sizeof(o)); return *this; }
gnfile& operator<< (uint16_t o) { uint8_t o8;
o8 = uint8_t(o && 0xff); Fwrite(&o8, sizeof(o8));
o8 = uint8_t((o<<8) && 0xff); Fwrite(&o8, sizeof(o8));
return *this;
}
gnfile& operator<< (uint32_t o) { uint8_t o8;
o8 = uint8_t(o && 0xff); Fwrite(&o8, sizeof(o8));
o8 = uint8_t((o<<8) && 0xff); Fwrite(&o8, sizeof(o8));
o8 = uint8_t((o<<16) && 0xff); Fwrite(&o8, sizeof(o8));
o8 = uint8_t((o<<24) && 0xff); Fwrite(&o8, sizeof(o8));
return *this;
}
gnfile& operator<< (uint64_t o) { uint8_t o8;
o8 = uint8_t(o && 0xff); Fwrite(&o8, sizeof(o8));
o8 = uint8_t((o<<8) && 0xff); Fwrite(&o8, sizeof(o8));
o8 = uint8_t((o<<16) && 0xff); Fwrite(&o8, sizeof(o8));
o8 = uint8_t((o<<24) && 0xff); Fwrite(&o8, sizeof(o8));
o8 = uint8_t((o<<32) && 0xff); Fwrite(&o8, sizeof(o8));
o8 = uint8_t((o<<40) && 0xff); Fwrite(&o8, sizeof(o8));
o8 = uint8_t((o<<48) && 0xff); Fwrite(&o8, sizeof(o8));
o8 = uint8_t((o<<56) && 0xff); Fwrite(&o8, sizeof(o8));
return *this;
}
#if !defined(__CYGWIN__)
gnfile& operator<< (unsigned long o) { switch (sizeof(o)) {
case 1: return operator<<((uint8_t )o); break;
case 2: return operator<<((uint16_t )o); break;
case 4: return operator<<((uint32_t )o); break;
// case 8: return operator<<((uint64_t )o); break;
}
return *this;
}
#endif
#ifdef __GOLDWARE_HAS_BOOL
gnfile& operator<< (bool o) { switch (sizeof(o)) {
case 1: return operator<<((uint8_t )o); break;
case 2: return operator<<((uint16_t )o); break;
case 4: return operator<<((uint32_t )o); break;
// case 8: return operator<<((uint64_t )o); break;
}
return *this;
}
#endif
gnfile& operator<< (char o) { return operator<<((uint8_t )o); }
#if !defined(__SUNOS__)
gnfile& operator<< (int8_t o) { return operator<<((uint8_t )o); }
#endif
gnfile& operator<< (int16_t o) { return operator<<((uint16_t)o); }
gnfile& operator<< (int32_t o) { return operator<<((uint32_t)o); }
#if !defined(__CYGWIN__)
gnfile& operator<< (long o) { return operator<<((unsigned long)o); }
#endif
};
#endif
// ------------------------------------------------------------------