# HG changeset patch
# User Matti Hamalainen <ccr@tnsp.org>
# Date 1560765273 -10800
# Node ID a4c1fafd442a577430c844593a320eb4a9e3e86b
# Parent  6878aad714ce9e0d014ede834bdb8f58b4730851
Add a progress indicator when "slow" matching is expected.

diff -r 6878aad714ce -r a4c1fafd442a tools/fanalyze.c
--- a/tools/fanalyze.c	Mon Jun 17 11:50:33 2019 +0300
+++ b/tools/fanalyze.c	Mon Jun 17 12:54:33 2019 +0300
@@ -928,7 +928,9 @@
         //
         // Attempt to find matching sequences of N+
         //
-        dmPrint(0, "Attempting to find matching sequences of %" DM_PRIu_SIZE_T" bytes or more\n",
+        BOOL slow = FALSE;
+        int ss = 0;
+        dmPrint(0, "Attempting to find matching sequences of %" DM_PRIu_SIZE_T" bytes or more.\n",
             optMinMatchLen);
 
         if (totalSize > 32*1024)
@@ -936,6 +938,7 @@
             dmPrint(0,
             "WARNING! Total data size is large, and the matching \"algorithm\"\n"
             "used is horribly inefficient. This will be quite slow ...\n");
+            slow = TRUE;
         }
 
         for (int nfile1 = 0; nfile1 < nsrcFiles; nfile1++)
@@ -947,6 +950,13 @@
             {
                 DMSourceFile *file2 = &srcFiles[nfile2];
 
+                if (slow)
+                {
+                    dmPrint(0,
+                        "Processing .. %1.1f%%\r",
+                        (float) ss * 100.0f / (float) (nsrcFiles * (nsrcFiles - 1)));
+                    ss++;
+                }
                 // Find longest possible matching sequence in file2, if any
                 for (size_t moffs1 = 0; moffs1 + optMinMatchLen < file1->size;)
                 {
@@ -980,6 +990,9 @@
 
 done:
 
+        if (slow)
+            dmPrint(0, "\n\n");
+
         for (int nmatch = 0; nmatch < ndmSequences; nmatch++)
         {
             DMMatchSeq *seq = &dmSequences[nmatch];