ref: f5e20c5823337a159618f02c861af69879b0f0e8
dir: /llt/dump.c/
#include "llt.h"
static char hexdig[] = "0123456789abcdef";
/*
display a given number of bytes from a buffer, with the first
address label being startoffs
*/
void
hexdump(ios_t *dest, const char *buffer, size_t len, size_t startoffs)
{
size_t offs = 0;
size_t i, pos;
char ch, linebuffer[16], hexc[4];
static const char *spc50 = " ";
hexc[2] = hexc[3] = ' ';
do{
ios_printf(dest, "%.8x ", offs+startoffs);
pos = 10;
for(i = 0; i < 16 && offs < len; i++, offs++){
ch = buffer[offs];
linebuffer[i] = (ch < 32 || ch >= 0x7f) ? '.' : ch;
hexc[0] = hexdig[((uint8_t)ch)>>4];
hexc[1] = hexdig[ch & 0x0f];
pos += ios_write(dest, hexc, (i == 7 || i == 15) ? 4 : 3);
}
for(; i < 16; i++)
linebuffer[i] = ' ';
ios_write(dest, spc50, 60-pos);
ios_putc('|', dest);
ios_write(dest, linebuffer, 16);
ios_write(dest, "|\n", 2);
}while(offs < len);
}