59 struct state {  struct
65   int (*append_char)(struct state *, unsigned char);  argument
66   int (*reserve)(struct state *, size_t);  argument
72 as_reserve (struct state *state, size_t n)
74   if (state->s + n > state->theend) {
75     int off = state->s - state->str;
78     if (state->max_sz && state->sz >= state->max_sz)
81     state->sz = max(state->sz * 2, state->sz + n);
82     if (state->max_sz)
83       state->sz = min(state->sz, state->max_sz);
84     tmp = realloc (state->str, state->sz);
87     state->str = tmp;
88     state->s = state->str + off;
89     state->theend = state->str + state->sz - 1;
95 as_append_char (struct state *state, unsigned char c)
97   if(as_reserve (state, 1))
100     *state->s++ = c;
107 append_number(struct state *state,  in append_number()  argument
123     if((*state->append_char)(state, rep[num % base]))  in append_number()
131     if((*state->append_char)(state, '0'))  in append_number()
144       if((*state->append_char)(state, '0'))  in append_number()
152       if((*state->append_char)(state, rep[10] + 23)) /* XXX */  in append_number()
154     if((*state->append_char)(state, '0'))  in append_number()
159     if((*state->append_char)(state, '-'))  in append_number()
163     if((*state->append_char)(state, '+'))  in append_number()
167     if((*state->append_char)(state, ' '))  in append_number()
174       char c = state->s[-i-1];  in append_number()
175       state->s[-i-1] = state->s[-len+i];  in append_number()
176       state->s[-len+i] = c;  in append_number()
180     if((*state->append_char)(state,  ' '))  in append_number()
187       char c = state->s[-i-1];  in append_number()
188       state->s[-i-1] = state->s[-len+i];  in append_number()
189       state->s[-len+i] = c;  in append_number()
196 append_string (struct state *state,  in append_string()  argument
208       if((*state->append_char) (state, ' '))  in append_string()
212       if ((*state->append_char) (state, *arg++))  in append_string()
216       if ((*state->append_char) (state, *arg++))  in append_string()
221       if((*state->append_char) (state, ' '))  in append_string()
227 append_char(struct state *state,  in append_char()  argument
233     if((*state->append_char) (state, ' '))  in append_char()
236   if((*state->append_char) (state, arg))  in append_char()
239     if((*state->append_char) (state, ' '))  in append_char()
262 xyzprintf (struct state *state, const char *char_format, va_list ap)  in xyzprintf()  argument
335 	if(append_char(state, va_arg(ap, int), width, flags))  in xyzprintf()
339 	if (append_string(state,  in xyzprintf()
360 	if (append_number (state, num, 10, "0123456789",  in xyzprintf()
370 	if (append_number (state, arg, 10, "0123456789",  in xyzprintf()
380 	if (append_number (state, arg, 010, "01234567",  in xyzprintf()
390 	if (append_number (state, arg, 0x10, "0123456789abcdef",  in xyzprintf()
400 	if (append_number (state, arg, 0x10, "0123456789ABCDEF",  in xyzprintf()
408 	if (append_number (state, arg, 0x10, "0123456789ABCDEF",  in xyzprintf()
415 	*arg = state->s - state->str;  in xyzprintf()
422 	if ((*state->append_char)(state, c))  in xyzprintf()
426 	if (   (*state->append_char)(state, '%')  in xyzprintf()
427 	    || (*state->append_char)(state, c))  in xyzprintf()
432       if ((*state->append_char) (state, c))  in xyzprintf()
475   struct state state;
477   state.max_sz = max_sz;
478   state.sz     = 1;
479   state.str    = malloc(state.sz);
480   if (state.str == NULL) {
484   state.s = state.str;
485   state.theend = state.s + state.sz - 1;
486   state.append_char = as_append_char;
487   state.reserve     = as_reserve;
489   st = xyzprintf (&state, format, args);
491     free (state.str);
497     *state.s = '\0';
498     len = state.s - state.str;
499     tmp = realloc (state.str, len+1);
501       free (state.str);