+
+
+
+
+DEFINE_VWRAPPERF(, progress)
+DEFINE_VWRAPPERF(, progress_log)
+
+static int last_progress_len;
+
+void vprogress(const char *fmt, va_list al) {
+ int r;
+
+ if (o_quiet) return;
+ if (!isatty(2)) return;
+
+ if (last_progress_len)
+ putc('\r',stderr);
+
+ r= vfprintf(stderr,fmt,al);
+ eassert(r>=0);
+
+ if (r < last_progress_len) {
+ fprintf(stderr,"%*s", last_progress_len - r, "");
+ if (!r) putc('\r', stderr);
+ else while (last_progress_len-- > r) putc('\b',stderr);
+ }
+ last_progress_len= r;
+ fflush(stderr);
+}
+
+void vprogress_log(const char *fmt, va_list al) {
+ if (o_quiet) return;
+
+ progress("");
+ vfprintf(stderr,fmt,al);
+ putc('\n',stderr);
+ fflush(stderr);
+}