Function uic_printf

server-info.c:38–69

}

__attribute__((format (printf, 2, 3)))
static int uic_printf(struct update_info_ctx *uic, const char *fmt, ...)
{
	va_list ap;
	int ret = -1;

	va_start(ap, fmt);

	if (uic_is_stale(uic)) {
		ret = vfprintf(uic->cur_fp, fmt, ap);
	} else {
		ssize_t r;
		struct strbuf *cur = &uic->cur_sb;
		struct strbuf *old = &uic->old_sb;

		strbuf_reset(cur);
		strbuf_vinsertf(cur, 0, fmt, ap);

		strbuf_reset(old);
		strbuf_grow(old, cur->len);
		r = fread(old->buf, 1, cur->len, uic->old_fp);
		if (r != cur->len || memcmp(old->buf, cur->buf, r))
			uic_mark_stale(uic);

		if (fwrite(cur->buf, 1, cur->len, uic->cur_fp) == cur->len)
			ret = 0;
	}

	va_end(ap);

	return ret;
}

/*
 * Create the file "path" by writing to a temporary file and renaming