+char *decstr(char **p, size_t *len)
+{
+ char *p2, *ret;
+
+ for(p2 = *p; (p2 - *p) < *len; p2++) {
+ if(*p2 == 0)
+ break;
+ }
+ if((p2 - *p) == *len)
+ return(NULL);
+ p2++;
+ ret = *p;
+ *len -= p2 - *p;
+ *p = p2;
+ return(ret);
+}
+
+char *vsprintf2(char *format, va_list al)
+{
+ int ret;
+ char *buf;
+ va_list al2;
+
+ va_copy(al2, al);
+ ret = vsnprintf(NULL, 0, format, al2);
+ va_end(al2);
+ buf = smalloc(ret + 1);
+ va_copy(al2, al);
+ vsnprintf(buf, ret + 1, format, al2);
+ va_end(al2);
+ return(buf);
+}
+
+char *sprintf2(char *format, ...)
+{
+ va_list args;
+ char *buf;
+
+ va_start(args, format);
+ buf = vsprintf2(format, args);
+ va_end(args);
+ return(buf);
+}
+
+char *sprintf3(char *format, ...)
+{
+ static char *buf = NULL;
+ va_list args;
+
+ if(buf != NULL)
+ free(buf);
+ va_start(args, format);
+ buf = vsprintf2(format, args);
+ va_end(args);
+ return(buf);
+}