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/*
20130604
20241207 - reformated using clang-format
Jan Mojzis
Public domain.
*/
#include "crypto_uint16.h"
#include "porttostr.h"
/*
The 'porttostr(strbuf,port)' converts 'port' from network byte order
into the 0-terminated string. The 'port' length is always 2 bytes.
The caller must allocate at least PORTTOSTR_LEN bytes for 'strbuf'.
*/
char *porttostr(char *strbuf, const unsigned char *port) {
long long len = 0;
crypto_uint16 num;
static char staticbuf[PORTTOSTR_LEN];
if (!strbuf) strbuf = staticbuf; /* not thread-safe */
num = port[0];
num <<= 8;
num |= port[1];
do {
num /= 10;
++len;
} while (num);
strbuf += len;
num = port[0];
num <<= 8;
num |= port[1];
do {
*--strbuf = '0' + (num % 10);
num /= 10;
} while (num);
while (len < PORTTOSTR_LEN) strbuf[len++] = 0;
return strbuf;
}
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