#include <lib9.h>static char t16e[] = "0123456789ABCDEF"; intdec16(uchar *out, int lim, char *in, int n){ int c, w = 0, i = 0; uchar *start = out; uchar *eout = out + lim; while(n-- > 0){ c = *in++; if('0' <= c && c <= '9') c = c - '0'; else if('a' <= c && c <= 'z') c = c - 'a' + 10; else if('A' <= c && c <= 'Z') c = c - 'A' + 10; else continue; w = (w<<4) + c; i++; if(i == 2){ if(out + 1 > eout) goto exhausted; *out++ = w; w = 0; i = 0; } }exhausted: return out - start;} intenc16(char *out, int lim, uchar *in, int n){ uint c; char *eout = out + lim; char *start = out; while(n-- > 0){ c = *in++; if(out + 2 >= eout) goto exhausted; *out++ = t16e[c>>4]; *out++ = t16e[c&0xf]; }exhausted: *out = 0; return out - start;}
#include <lib9.h>
static char t16e[] = "0123456789ABCDEF";
int
dec16(uchar *out, int lim, char *in, int n)
{
int c, w = 0, i = 0;
uchar *start = out;
uchar *eout = out + lim;
while(n-- > 0){
c = *in++;
if('0' <= c && c <= '9')
c = c - '0';
else if('a' <= c && c <= 'z')
c = c - 'a' + 10;
else if('A' <= c && c <= 'Z')
c = c - 'A' + 10;
else
continue;
w = (w<<4) + c;
i++;
if(i == 2){
if(out + 1 > eout)
goto exhausted;
*out++ = w;
w = 0;
i = 0;
}
}
exhausted:
return out - start;
}
int
enc16(char *out, int lim, uchar *in, int n)
{
uint c;
char *eout = out + lim;
char *start = out;
while(n-- > 0){
c = *in++;
if(out + 2 >= eout)
goto exhausted;
*out++ = t16e[c>>4];
*out++ = t16e[c&0xf];
}
exhausted:
*out = 0;
return out - start;
}