[PATCH setup 5/5] Limit the number of packages shown in the IDD_DOWNLOAD_ERROR listbox

[Ken Brown <kbrown@cornell.edu>]

---
 download.cc | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/download.cc b/download.cc
index b059bf5..6e6d6e8 100644
--- a/download.cc
+++ b/download.cc
@@ -188,6 +188,7 @@ download_one (packagesource & pkgsource, HWND owner)
 
 static std::vector <packageversion> download_failures;
 static std::string download_warn_pkgs;
+static const int max_pkgs = 20;
 
 static INT_PTR CALLBACK
 download_error_proc (HWND h, UINT message, WPARAM wParam, LPARAM lParam)
@@ -224,12 +225,19 @@ query_download_errors (HINSTANCE h, HWND owner)
 {
   download_warn_pkgs = "";
   Log (LOG_PLAIN) << "The following package(s) had download errors:" << endLog;
+  int count = 0;
   for (std::vector <packageversion>::const_iterator i = download_failures.begin (); i != download_failures.end (); i++)
     {
       packageversion pv = *i;
       std::string pvs = pv.Name () + "-" + pv.Canonical_version ();
       Log (LOG_PLAIN) << "  " << pvs << endLog;
-      download_warn_pkgs += pvs + "\r\n";
+      if (count < max_pkgs)
+	download_warn_pkgs += pvs + "\r\n";
+      else if (count == max_pkgs)
+	download_warn_pkgs += "...and "
+	  + std::to_string (download_failures.size () - max_pkgs)
+	  + " more.";
+      count++;
     }
   return DialogBox (h, MAKEINTRESOURCE (IDD_DOWNLOAD_ERROR), owner,
 		    download_error_proc);
-- 
2.15.0