| 415 | } |
| 416 | |
| 417 | void strbuf_vaddf(struct strbuf *sb, const char *fmt, va_list ap) |
| 418 | { |
| 419 | int len; |
| 420 | va_list cp; |
| 421 | |
| 422 | if (!strbuf_avail(sb)) |
| 423 | strbuf_grow(sb, 64); |
| 424 | va_copy(cp, ap); |
| 425 | len = vsnprintf(sb->buf + sb->len, sb->alloc - sb->len, fmt, cp); |
| 426 | va_end(cp); |
| 427 | if (len < 0) |
| 428 | die(_("unable to format message: %s"), fmt); |
| 429 | if (len > strbuf_avail(sb)) { |
| 430 | strbuf_grow(sb, len); |
| 431 | len = vsnprintf(sb->buf + sb->len, sb->alloc - sb->len, fmt, ap); |
| 432 | if (len > strbuf_avail(sb)) |
| 433 | BUG("your vsnprintf is broken (insatiable)"); |
| 434 | } |
| 435 | strbuf_setlen(sb, sb->len + len); |
| 436 | } |
| 437 | |
| 438 | int strbuf_expand_step(struct strbuf *sb, const char **formatp) |
| 439 | { |