- if (msg == 0)
- return;
- blank=game.blklin;
- nparms=1;
- do {
- nxt=labs(LINES[msg])-1;
- ++msg;
- LNLENG=0;
- LNPOSN=1;
- state=0;
- for (i = msg; i <= nxt; i++) {
- PUTTXT(LINES[i],&state,2);
- }
- LNPOSN=0;
- ++LNPOSN;
-
- while (LNPOSN <= LNLENG) {
- if (INLINE[LNPOSN] != ascii_to_advent['%']) {
- ++LNPOSN;
- continue;
- }
- prmtyp = INLINE[LNPOSN+1];
- /* A "%"; the next character determine the type of
- * parameter: 1 (!) = suppress message completely, 29 (S) = NULL
- * If PARAM=1, else 'S' (optional plural ending), 33 (W) = word
- * (two 30-bit values) with trailing spaces suppressed, 22 (L) or
- * 31 (U) = word but map to lower/upper case, 13 (C) = word in
- * lower case with first letter capitalised, 65-73 (1-9) =
- * number using that many characters. */
- if (prmtyp == ascii_to_advent['!'])
- return;
- if (prmtyp == ascii_to_advent['S']) {
- SHFTXT(LNPOSN+2,-1);
- INLINE[LNPOSN] = ascii_to_advent['s'];
- if (PARMS[nparms] == 1)
- SHFTXT(LNPOSN+1,-1);
- ++nparms;
- continue;
- }
- if (prmtyp == ascii_to_advent['W'] || prmtyp == ascii_to_advent['L'] || prmtyp == ascii_to_advent['U'] || prmtyp == ascii_to_advent['C']) {
- SHFTXT(LNPOSN+2,-2);
- state = 0;
- casemake = -1;
- if (prmtyp == ascii_to_advent['U'])
- casemake=1;
- if (prmtyp == ascii_to_advent['W'])
- casemake=0;
- i = LNPOSN;
- PUTTXT(PARMS[nparms],&state,casemake);
- PUTTXT(PARMS[nparms+1],&state,casemake);
- if (prmtyp == ascii_to_advent['C'] && INLINE[i] >= ascii_to_advent['a'] && INLINE[i] <= ascii_to_advent['z'])
- {
- // Convert to uppercase.
- // Round-trip to ASCII and back so that this code doesn't break when the mapping changes.
- // This can be simplified when mapping goes away.
- char this = advent_to_ascii[INLINE[i]];
- char uc_this = toupper(this);
- INLINE[i] = ascii_to_advent[uc_this];
- }
- nparms += 2;
- continue;
- }
-
- prmtyp=prmtyp-64;
- if (prmtyp < ascii_to_advent['!'] || prmtyp > ascii_to_advent['-']) {
- ++LNPOSN;
- continue;
- }
- SHFTXT(LNPOSN+2,prmtyp-2);
- LNPOSN += prmtyp;
- param=labs(PARMS[nparms]);
- neg=0;
- if (PARMS[nparms] < 0)
- neg=9;
- for (i=1; i <= prmtyp; i++) {
- --LNPOSN;
- INLINE[LNPOSN]=MOD(param,10)+64;
- if (i != 1 && param == 0) {
- INLINE[LNPOSN]=neg;
- neg=0;
- }
- param=param/10;
- }
- LNPOSN += prmtyp;
- ++nparms;
- continue;
- }
+ // Handle format specifiers (including the custom %C, %L, %S) by adjusting the parameter accordingly, and replacing the specifier with %s.
+ long previous_arg = 0;
+ for (int i = 0; i < msglen; i++) {
+ if (msg[i] != '%') {
+ *renderp++ = msg[i];
+ size--;
+ } else {
+ long arg = va_arg(ap, long);
+ if (arg == -1)
+ arg = 0;
+ i++;
+ // Integer specifier. In order to accommodate the fact that PARMS can have both legitimate integers *and* packed tokens, stringify everything. Future work may eliminate the need for this.
+ if (msg[i] == 'd') {
+ int ret = snprintf(renderp, size, "%ld", arg);
+ if (ret < size) {
+ renderp += ret;
+ size -= ret;
+ }
+ }