Hi !
when I need function which return statically allocated strings, I
sometimes use sort of a round-robbin buffer, shared by several
functions. This way, I can call the same function several times
without allocating memory, and the number of calls is just limited
by the total size. Here comes an example (from scratch, completely
untested).
Any comments ?
Willy
---------
#define TOTALSIZE 256
#define NTOA_SIZE 16
static char stringbuffer[TOTALSIZE];
static char *strbufptr=stringbuffer;
char *inet_ntoa(u32 addr) {
char *retptr;
if (strbufptr+NTOA_SIZE > stringbuffer+TOTALSIZE)
strbufptr = stringbuffer;
addr=htonl(addr);
strbufptr += sprintf(retptr=strbufptr, "%d.%d.%d.%d",
(uchar)(addr>>24), (uchar)(addr>>16), (uchar)(addr>>8), (uchar)addr);
return retptr;
}
void otherfunction(u32 src, u32 dst) {
printf("src=%s, dst=%s\n", inet_ntoa(src), inet_ntoa(dst));
}
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