Rin operator()( T& t, Rin r_in, Rout& r_out)
{
if ( !r_in )
return throw_t<_except_>(t, unexpected_end_fragment(), r_in );
unsigned short hex = 0;
const unsigned short fail_value = static_cast<unsigned short>(-1);
unsigned short value = uchar2ushort(r_in++);
// //////////////
if ( value != fail_value )
hex |= value << 12;
else
return throw_t<_except_>(t, invalid_string( distance(r_in) ), r_in );
if (!r_in)
return throw_t<_except_>(t, unexpected_end_fragment(), r_in );
// //////////////
value = uchar2ushort(r_in++);
if ( value != fail_value )
hex |= value << 8;
else
return throw_t<_except_>(t, invalid_string( distance(r_in) ), r_in );
if (!r_in)
return throw_t<_except_>(t, unexpected_end_fragment(), r_in );
// //////////////
value = uchar2ushort(r_in++);
if ( value != fail_value )
hex |= value << 4;
else
return throw_t<_except_>(t, invalid_string( distance(r_in) ), r_in );
if (!r_in)
return throw_t<_except_>(t, unexpected_end_fragment(), r_in );
// //////////////
value = uchar2ushort(r_in++);
if ( value != fail_value )
hex |= value;
else
return throw_t<_except_>(t, invalid_string( distance(r_in) ), r_in );
// //////////////
if ( hex <= 0x007F )
*(r_out++) = static_cast<unsigned char>(hex);
else if ( hex <= 0x007FF )
{
*(r_out++) = 192 | static_cast<unsigned char>( hex >> 6 );
if ( !r_out )
return throw_t<_except_>(t, out_of_range( distance(r_in) ), r_in );
*(r_out++) = 128 | ( static_cast<unsigned char>( hex ) & 63 );
}
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdbool.h>
unsigned short
uchar2ushort(unsigned char c) {
return (unsigned short)c * 0xFF;
}
unsigned long
get_gs_pixel(Display *disp, unsigned char k) {
XColor color = {
.red = uchar2ushort(k),
.green = uchar2ushort(k),
.blue = uchar2ushort(k),
};
if (XAllocColor(disp, DefaultColormap(disp, 0), &color) == False) {
printf("XAllocColor() failed in get_gs_color()\n");
exit(1);
}
return color.pixel;
}
int
main(int argc, char **argv) {
if (argc != 2) {
