[xmlvm-users] Network Byte Order

[Troy G. <tro...@gm...>]

I have a char array in Objective C with this: char[] {0, 37, 0, 0}.  This is
later passed to the readInt__ method in  java_io_DataInputStream.

This results in 9472 through the Simulator.  On the Java side, I wrote a
test and this results in 2424832.  It appears the byte order is being
reversed since  Java reads and writes everything in byte order.  It seems
like the following code needs to be reversed to match Java.

So instead of p being p[0] = 0, p[1] = 25, p[2] = 0, p[3] = 0 it would be p[0]
= 0, p[1] = 0, p[2] = 25, p[3] = 0.  This would correctly convert on the
iPhone.  I posted what the new method could look like although I didn't test
it.

*original*

- (int) readInt__
{
int d;
 unsigned char* p = (unsigned char*) &d;
 for (int i = 0; i < 4; i++) {
int v = [target read__];
 *p++ = (unsigned char) v;
}

return d;
}

to

*new*

- (int) readInt__
{
int d;
unsigned char* p = (unsigned char*) &d;
 for (int i = 4; i > 0; i--) {
int v = [target read__];
 p[i-1] = (unsigned char) v;
}

return d;
}

*
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