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#include <iostream.h>
#include <stdlib.h>
#include <unistd.h>
#include "constants.H"
#include "util.H"
unsigned int
GetUINT(unsigned const char *buffer, int bigEndian)
{
unsigned int result;
if (bigEndian)
{
result = *buffer;
result <<= 8;
result += buffer[1];
}
else
{
result = buffer[1];
result <<= 8;
result += *buffer;
}
return result;
}
unsigned int
GetULONG(unsigned const char *buffer, int bigEndian)
{
const unsigned char *next = (bigEndian ? buffer : buffer + 3);
unsigned int result = 0;
for (int i = 0; i < 4; i++)
{
result <<= 8;
result += *next;
if (bigEndian)
next++;
else
next--;
}
return result;
}
void
PutUINT(unsigned int value, unsigned char *buffer, int bigEndian)
{
if (bigEndian)
{
buffer[1] = (unsigned char) (value & 0xff);
value >>= 8;
*buffer = (unsigned char) value;
}
else
{
*buffer = (unsigned char) (value & 0xff);
value >>= 8;
buffer[1] = (unsigned char) value;
}
}
void
PutULONG(unsigned int value, unsigned char *buffer, int bigEndian)
{
if (bigEndian)
{
buffer += 3;
for (int i = 4; i; i--)
{
*buffer-- = (unsigned char) (value & 0xff);
value >>= 8;
}
}
else
{
for (int i = 4; i; i--)
{
*buffer++ = (unsigned char) (value & 0xff);
value >>= 8;
}
}
}
unsigned int
RoundUp4(unsigned int x)
{
unsigned int y = x / 4;
y *= 4;
if (y != x)
y += 4;
return y;
}
void
PrintVersionInfo()
{
cout << "dxpc - Differential X Protocol Compressor - " <<
"Version " << DXPC_VERSION_MAJOR << '.' << DXPC_VERSION_MINOR << '.' <<
DXPC_VERSION_PATCH;
if (DXPC_VERSION_BETA != 0)
cout << "beta" << DXPC_VERSION_BETA;
cout << endl;
cout << "Copyright (c) 1995,1996 Brian Pane" << endl <<
"Copyright (c) 1996,1997 Zachary Vonler" << endl
<< "3.8.0 released by Kevin Vigor" << endl;
}
void
DumpMessage(const unsigned char *src, unsigned int numBytes)
{
for (unsigned int i = 0; i < numBytes; i++)
cout << i << '\t' << (unsigned int) (src[i]) << endl;
}
const char *
GetArg(int &argi, int argc, const char *const *argv)
{
const char *nextArg = argv[argi] + 2; // skip "-" and flag character
if (*nextArg == 0)
{
if (argi + 1 == argc)
return NULL;
else
{
argi++;
return argv[argi];
}
}
else
return nextArg;
}
int
WriteAll(int fd, const unsigned char *data, unsigned int length)
{
unsigned int bytesWritten = 0;
while (bytesWritten < length)
{
int result =::write(fd, data + bytesWritten,
length - bytesWritten);
if (result <= 0)
return -1;
bytesWritten += result;
}
return length;
}
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