59 struct state {  struct
65   int (*append_char)(struct state *, unsigned char);  argument
66   int (*reserve)(struct state *, size_t);  argument
72 sn_reserve (struct state *state, size_t n)  in sn_reserve()  argument
74   return state->s + n > state->theend;  in sn_reserve()
78 sn_append_char (struct state *state, unsigned char c)  in sn_append_char()  argument
80   if (sn_reserve (state, 1)) {  in sn_append_char()
83     *state->s++ = c;  in sn_append_char()
91 as_reserve (struct state *state, size_t n)
93   if (state->s + n > state->theend) {
94     int off = state->s - state->str;
97     if (state->max_sz && state->sz >= state->max_sz)
100     state->sz = max(state->sz * 2, state->sz + n);
101     if (state->max_sz)
102       state->sz = min(state->sz, state->max_sz);
103     tmp = realloc (state->str, state->sz);
106     state->str = tmp;
107     state->s = state->str + off;
108     state->theend = state->str + state->sz - 1;
114 as_append_char (struct state *state, unsigned char c)
116   if(as_reserve (state, 1))
119     *state->s++ = c;
126 append_number(struct state *state,  in append_number()  argument
142     if((*state->append_char)(state, rep[num % base]))  in append_number()
150     if((*state->append_char)(state, '0'))  in append_number()
163       if((*state->append_char)(state, '0'))  in append_number()
171       if((*state->append_char)(state, rep[10] + 23)) /* XXX */  in append_number()
173     if((*state->append_char)(state, '0'))  in append_number()
178     if((*state->append_char)(state, '-'))  in append_number()
182     if((*state->append_char)(state, '+'))  in append_number()
186     if((*state->append_char)(state, ' '))  in append_number()
193       char c = state->s[-i-1];  in append_number()
194       state->s[-i-1] = state->s[-len+i];  in append_number()
195       state->s[-len+i] = c;  in append_number()
199     if((*state->append_char)(state,  ' '))  in append_number()
206       char c = state->s[-i-1];  in append_number()
207       state->s[-i-1] = state->s[-len+i];  in append_number()
208       state->s[-len+i] = c;  in append_number()
215 append_string (struct state *state,  in append_string()  argument
227       if((*state->append_char) (state, ' '))  in append_string()
231       if ((*state->append_char) (state, *arg++))  in append_string()
235       if ((*state->append_char) (state, *arg++))  in append_string()
240       if((*state->append_char) (state, ' '))  in append_string()
246 append_char(struct state *state,  in append_char()  argument
252     if((*state->append_char) (state, ' '))  in append_char()
255   if((*state->append_char) (state, arg))  in append_char()
258     if((*state->append_char) (state, ' '))  in append_char()
281 xyzprintf (struct state *state, const char *char_format, va_list ap)  in xyzprintf()  argument
354 	if(append_char(state, va_arg(ap, int), width, flags))  in xyzprintf()
358 	if (append_string(state,  in xyzprintf()
379 	if (append_number (state, num, 10, "0123456789",  in xyzprintf()
389 	if (append_number (state, arg, 10, "0123456789",  in xyzprintf()
399 	if (append_number (state, arg, 010, "01234567",  in xyzprintf()
409 	if (append_number (state, arg, 0x10, "0123456789abcdef",  in xyzprintf()
419 	if (append_number (state, arg, 0x10, "0123456789ABCDEF",  in xyzprintf()
427 	if (append_number (state, arg, 0x10, "0123456789ABCDEF",  in xyzprintf()
434 	*arg = state->s - state->str;  in xyzprintf()
441 	if ((*state->append_char)(state, c))  in xyzprintf()
445 	if (   (*state->append_char)(state, '%')  in xyzprintf()
446 	    || (*state->append_char)(state, c))  in xyzprintf()
451       if ((*state->append_char) (state, c))  in xyzprintf()
564   struct state state;
566   state.max_sz = max_sz;
567   state.sz     = 1;
568   state.str    = malloc(state.sz);
569   if (state.str == NULL) {
573   state.s = state.str;
574   state.theend = state.s + state.sz - 1;
575   state.append_char = as_append_char;
576   state.reserve     = as_reserve;
578   st = xyzprintf (&state, format, args);
580     free (state.str);
586     *state.s = '\0';
587     len = state.s - state.str;
588     tmp = realloc (state.str, len+1);
590       free (state.str);
605   struct state state;  in pcap_vsnprintf()  local
609   state.max_sz = 0;  in pcap_vsnprintf()
610   state.sz     = sz;  in pcap_vsnprintf()
611   state.str    = ustr;  in pcap_vsnprintf()
612   state.s      = ustr;  in pcap_vsnprintf()
613   state.theend = ustr + sz - 1;  in pcap_vsnprintf()
614   state.append_char = sn_append_char;  in pcap_vsnprintf()
615   state.reserve     = sn_reserve;  in pcap_vsnprintf()
617   ret = xyzprintf (&state, format, args);  in pcap_vsnprintf()
618   *state.s = '\0';  in pcap_vsnprintf()
622     return state.s - state.str;  in pcap_vsnprintf()