From fd6f84b46dcad8664f180830b9951f72a255f41e Mon Sep 17 00:00:00 2001
From: Guy Harris <guy@alum.mit.edu>
Date: Fri, 14 Jan 2005 20:27:34 +0000
Subject: From Laurent Rabret: handle the cases where there's no capture file,
 or there is but it has no packets.

svn path=/trunk/; revision=13041
---
 gtk/ansi_a_stat.c   |  4 ++--
 gtk/ansi_map_stat.c |  2 +-
 gtk/gsm_a_stat.c    |  2 ++
 gtk/gsm_map_stat.c  |  2 +-
 gtk/isup_stat.c     |  2 +-
 gtk/mtp3_stat.c     |  2 +-
 gtk/mtp3_summary.c  | 45 +++++++++++++++++++++++++++++++--------------
 7 files changed, 39 insertions(+), 20 deletions(-)

diff --git a/gtk/ansi_a_stat.c b/gtk/ansi_a_stat.c
index 4f78e3e754..f34754ada9 100644
--- a/gtk/ansi_a_stat.c
+++ b/gtk/ansi_a_stat.c
@@ -128,7 +128,7 @@ ansi_a_stat_draw(
     int			i, j;
     char		*strp;
 
-    if (dlg_bsmap.win != NULL)
+    if (dlg_bsmap.win && tapdata)
     {
 	i = 0;
 
@@ -147,7 +147,7 @@ ansi_a_stat_draw(
 	gtk_clist_sort(GTK_CLIST(dlg_bsmap.table));
     }
 
-    if (dlg_dtap.win != NULL)
+    if (dlg_dtap.win && tapdata)
     {
 	i = 0;
 
diff --git a/gtk/ansi_map_stat.c b/gtk/ansi_map_stat.c
index d54850dfd7..16bc2b76a6 100644
--- a/gtk/ansi_map_stat.c
+++ b/gtk/ansi_map_stat.c
@@ -137,7 +137,7 @@ ansi_map_stat_draw(
     int			i, j;
     char		*strp;
 
-    if (dlg.win != NULL)
+    if (dlg.win && tapdata)
     {
 	i = 0;
 
diff --git a/gtk/gsm_a_stat.c b/gtk/gsm_a_stat.c
index b39ba53e1a..b45d2a93d5 100644
--- a/gtk/gsm_a_stat.c
+++ b/gtk/gsm_a_stat.c
@@ -195,6 +195,8 @@ gsm_a_stat_draw(
 {
     gsm_a_stat_t	*stat_p = tapdata;
 
+	if (!tapdata) return;
+
     if (dlg_bssmap.win != NULL)
     {
 	gsm_a_stat_draw_aux(&dlg_bssmap,
diff --git a/gtk/gsm_map_stat.c b/gtk/gsm_map_stat.c
index a154c20bf4..883fe71305 100644
--- a/gtk/gsm_map_stat.c
+++ b/gtk/gsm_map_stat.c
@@ -150,7 +150,7 @@ gsm_map_stat_draw(
     int			i, j;
     char		*strp;
 
-    if (dlg.win != NULL)
+    if (dlg.win && tapdata)
     {
 	i = 0;
 
diff --git a/gtk/isup_stat.c b/gtk/isup_stat.c
index beda73bc53..befac9102a 100644
--- a/gtk/isup_stat.c
+++ b/gtk/isup_stat.c
@@ -120,7 +120,7 @@ isup_stat_draw(
     int			i, j;
     char		*strp;
 
-    if (dlg.win != NULL)
+    if (dlg.win && tapdata)
     {
 	i = 0;
 
diff --git a/gtk/mtp3_stat.c b/gtk/mtp3_stat.c
index c77c51d036..76b9206704 100644
--- a/gtk/mtp3_stat.c
+++ b/gtk/mtp3_stat.c
@@ -174,7 +174,7 @@ mtp3_stat_draw(
     int			i, j, row_offset;
     char		str[256];
 
-    if (dlg.win == NULL)
+    if (!dlg.win || !tapdata)
     {
 	return;
     }
diff --git a/gtk/mtp3_summary.c b/gtk/mtp3_summary.c
index bb3524fae1..2db1066477 100644
--- a/gtk/mtp3_summary.c
+++ b/gtk/mtp3_summary.c
@@ -217,13 +217,13 @@ mtp3_sum_draw(
 
 	entries[1] = g_strdup_printf("%u", num_msus);
 
-	entries[2] = g_strdup_printf("%.2f", num_msus/seconds);
-
+	entries[2] = (seconds) ? g_strdup_printf("%.2f", num_msus/seconds) : "N/A";
+	
 	entries[3] = g_strdup_printf("%.0f", num_bytes);
 
-	entries[4] = g_strdup_printf("%.2f", num_bytes/num_msus);
+	entries[4] = (num_msus) ? g_strdup_printf("%.2f", num_bytes/num_msus) : "N/A";
 
-	entries[5] = g_strdup_printf("%.2f", num_bytes/seconds);
+	entries[5] = (seconds) ? g_strdup_printf("%.2f", num_bytes/seconds) : "N/A";
 
 	gtk_clist_insert(GTK_CLIST(table), i, entries);
     }
@@ -243,11 +243,12 @@ mtp3_sum_gtk_sum_cb(GtkWidget *w _U_, gpointer d _U_)
 		*table, *column_lb, *table_fr;
   column_arrows	*col_arrows;
 
-  gchar         string_buff[SUM_STR_MAX];
-  double        seconds;
-  int		tot_num_msus;
-  double        tot_num_bytes;
-  int		i;
+  gchar			string_buff[SUM_STR_MAX];
+  const char *  file_type;
+  double		seconds;
+  int			tot_num_msus;
+  double		tot_num_bytes;
+  int			i;
 
   /* initialize the tally */
   summary_fill_in(&summary);
@@ -273,7 +274,7 @@ mtp3_sum_gtk_sum_cb(GtkWidget *w _U_, gpointer d _U_)
   gtk_widget_show(file_box);
 
   /* filename */
-  g_snprintf(string_buff, SUM_STR_MAX, "Name: %s", summary.filename);
+  g_snprintf(string_buff, SUM_STR_MAX, "Name: %s", ((summary.filename) ? summary.filename : "None"));
   add_string_to_box(string_buff, file_box);
 
   /* length */
@@ -281,7 +282,8 @@ mtp3_sum_gtk_sum_cb(GtkWidget *w _U_, gpointer d _U_)
   add_string_to_box(string_buff, file_box);
 
   /* format */
-  g_snprintf(string_buff, SUM_STR_MAX, "Format: %s", wtap_file_type_string(summary.encap_type));
+  file_type = wtap_file_type_string(summary.encap_type);
+  g_snprintf(string_buff, SUM_STR_MAX, "Format: %s", (file_type ? file_type : "N/A"));
   add_string_to_box(string_buff, file_box);
 
   if (summary.has_snap) {
@@ -386,16 +388,31 @@ mtp3_sum_gtk_sum_cb(GtkWidget *w _U_, gpointer d _U_)
   g_snprintf(string_buff, SUM_STR_MAX, "Total MSUs: %u", tot_num_msus);
   add_string_to_box(string_buff, tot_box);
 
-  g_snprintf(string_buff, SUM_STR_MAX, "MSUs/second: %.2f", tot_num_msus/seconds);
+  if (seconds) {
+		g_snprintf(string_buff, SUM_STR_MAX, "MSUs/second: %.2f", tot_num_msus/seconds);
+  }
+  else {
+		g_snprintf(string_buff, SUM_STR_MAX, "MSUs/second: N/A");
+  }
   add_string_to_box(string_buff, tot_box);
 
   g_snprintf(string_buff, SUM_STR_MAX, "Total Bytes: %.0f", tot_num_bytes);
   add_string_to_box(string_buff, tot_box);
 
-  g_snprintf(string_buff, SUM_STR_MAX, "Average Bytes/MSU: %.2f", tot_num_bytes/tot_num_msus);
+  if (tot_num_msus) {
+		g_snprintf(string_buff, SUM_STR_MAX, "Average Bytes/MSU: %.2f", tot_num_bytes/tot_num_msus);
+  }
+  else {
+	    g_snprintf(string_buff, SUM_STR_MAX, "Average Bytes/MSU: N/A");
+  }
   add_string_to_box(string_buff, tot_box);
 
-  g_snprintf(string_buff, SUM_STR_MAX, "Bytes/second: %.2f", tot_num_bytes/seconds);
+  if (seconds) {
+	  g_snprintf(string_buff, SUM_STR_MAX, "Bytes/second: %.2f", tot_num_bytes/seconds);
+  }
+  else {
+	  g_snprintf(string_buff, SUM_STR_MAX, "Bytes/second: N/A");
+  }
   add_string_to_box(string_buff, tot_box);
 
   /* Button row. */
-- 
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