[gnet] examples: don't ignore return value of fwrite()

[Tim-Philipp Müller <tpm src gnome org>]

commit b8ed92877ef85471a6447abd96e6cc182e8c3430
Author: Tim-Philipp Müller <tim centricular net>
Date:   Fri Apr 17 20:50:35 2009 +0100

    examples: don't ignore return value of fwrite()
---
 examples/echoclient-async.c |    5 ++++-
 examples/echoclient-gconn.c |    5 ++++-
 examples/echoclient-udp.c   |    5 ++++-
 examples/echoclient-unix.c  |    5 ++++-
 examples/echoclient.c       |    5 ++++-
 examples/echoserver-unix.c  |    9 +++++++--
 examples/echoserver.c       |    5 ++++-
 examples/hfetch.c           |    5 ++++-
 8 files changed, 35 insertions(+), 9 deletions(-)

diff --git a/examples/echoclient-async.c b/examples/echoclient-async.c
index 7f8b6bc..2efad48 100644
--- a/examples/echoclient-async.c
+++ b/examples/echoclient-async.c
@@ -21,6 +21,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <errno.h>
 #include <glib.h>
 #include <gnet.h>
 
@@ -149,7 +150,9 @@ async_client_sin_iofunc (GIOChannel* iochannel, GIOCondition condition,
 	{
 	  gint i;
 
-	  fwrite (buffer, 1, bytes_read, stdout);
+	  if (fwrite (buffer, 1, bytes_read, stdout) != 1) {
+            fprintf (stderr, "Error: fwrite to stdout failed: %s\n", g_strerror (errno));
+          }
 
 	  for (i = 0; i < bytes_read; ++i)
 	    if (buffer[i] == '\n')
diff --git a/examples/echoclient-gconn.c b/examples/echoclient-gconn.c
index 4bc3064..f8419b7 100644
--- a/examples/echoclient-gconn.c
+++ b/examples/echoclient-gconn.c
@@ -21,6 +21,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <errno.h>
 #include <glib.h>
 #include <gnet.h>
 
@@ -155,7 +156,9 @@ ob_conn_func (GConn* conn, GConnEvent* event, gpointer user_data)
       {
 	/* Write line out */
 	event->buffer[event->length - 1] = '\n';
-	fwrite (event->buffer, event->length, 1, stdout);
+        if (fwrite (event->buffer, event->length, 1, stdout) != 1) {
+         fprintf (stderr, "Error: fwrite to stdout failed: %s\n", g_strerror (errno));
+        }
 
 	/* Check if done */
 	lines_pending--;
diff --git a/examples/echoclient-udp.c b/examples/echoclient-udp.c
index aa83bc2..31cfd47 100644
--- a/examples/echoclient-udp.c
+++ b/examples/echoclient-udp.c
@@ -21,6 +21,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <errno.h>
 #include <glib.h>
 #include <gnet.h>
 
@@ -81,7 +82,9 @@ main(int argc, char** argv)
       if (n == -1) break;
 
       /* Write out */
-      fwrite (buffer, n, 1, stdout);
+      if (fwrite(buffer, n, 1, stdout) != 1) {
+       fprintf (stderr, "Error: fwrite to stdout failed: %s\n", g_strerror (errno));
+      }
     }
 
   gnet_inetaddr_delete (addr);
diff --git a/examples/echoclient-unix.c b/examples/echoclient-unix.c
index e970e2a..c2c2e1b 100644
--- a/examples/echoclient-unix.c
+++ b/examples/echoclient-unix.c
@@ -22,6 +22,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <errno.h>
 #include <glib.h>
 #include <gnet.h>
 
@@ -106,7 +107,9 @@ normal_echoclient(gchar* path, gboolean abstract)
     e = gnet_io_channel_readn(iochannel, buffer, n, &n);
     if (e != G_IO_ERROR_NONE)
       break;
-    fwrite(buffer, n, 1, stdout);
+    if (fwrite(buffer, n, 1, stdout) != 1) {
+     fprintf (stderr, "Error: fwrite to stdout failed: %s\n", g_strerror (errno));
+    }
   }
 
   if (e != G_IO_ERROR_NONE) 
diff --git a/examples/echoclient.c b/examples/echoclient.c
index 3813a8f..1715473 100644
--- a/examples/echoclient.c
+++ b/examples/echoclient.c
@@ -21,6 +21,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <errno.h>
 #include <glib.h>
 #include <gnet.h>
 
@@ -102,7 +103,9 @@ main(int argc, char** argv)
       error = gnet_io_channel_readn (iochannel, buffer, n, &n);
       if (error != G_IO_ERROR_NONE) break;
 
-      fwrite(buffer, n, 1, stdout);
+      if (fwrite(buffer, n, 1, stdout) != 1) {
+       fprintf (stderr, "Error: fwrite to stdout failed: %s\n", g_strerror (errno));
+      }
     }
 
   if (error != G_IO_ERROR_NONE) 
diff --git a/examples/echoserver-unix.c b/examples/echoserver-unix.c
index e97c138..1bd0138 100644
--- a/examples/echoserver-unix.c
+++ b/examples/echoserver-unix.c
@@ -23,6 +23,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <sys/types.h>
+#include <errno.h>
 #include <unistd.h>
 #include <signal.h>
 #include <glib.h>
@@ -119,7 +120,9 @@ normal_echoserver(gchar *path, gboolean abstract)
       e = gnet_io_channel_writen(ioclient, buffer, n, &n);
       if (e != G_IO_ERROR_NONE)
 	break;
-      fwrite(buffer, n, 1, stdout);
+      if (fwrite(buffer, n, 1, stdout) != 1) {
+       fprintf (stderr, "Error: fwrite to stdout failed: %s\n", g_strerror (errno));
+      }
     }
     if (e != G_IO_ERROR_NONE)
       fprintf(stderr,
@@ -260,7 +263,9 @@ async_client_iofunc(GIOChannel *iochannel, GIOCondition c,
 			 async_client_iofunc,
 			 cs);
       }
-      fwrite(&cs->buffer[cs->n], bytes_read, 1, stdout);
+      if (fwrite(&cs->buffer[cs->n], bytes_read, 1, stdout) != 1) {
+       fprintf (stderr, "Error: fwrite to stdout failed: %s\n", g_strerror (errno));
+      }
       cs->n += bytes_read;
     }
   }
diff --git a/examples/echoserver.c b/examples/echoserver.c
index b666509..ace965b 100644
--- a/examples/echoserver.c
+++ b/examples/echoserver.c
@@ -21,6 +21,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <errno.h>
 #include <glib.h>
 #include <gnet.h>
 
@@ -96,7 +97,9 @@ main(int argc, char** argv)
 	{
 	  error = gnet_io_channel_writen(ioclient, buffer, n, &n);
 	  if (error != G_IO_ERROR_NONE) break;
-	  fwrite(buffer, n, 1, stdout);
+          if (fwrite(buffer, n, 1, stdout) != 1) {
+            fprintf (stderr, "Error: fwrite to stdout failed: %s\n", g_strerror (errno));
+          }
 	}
 
       if (error != G_IO_ERROR_NONE)
diff --git a/examples/hfetch.c b/examples/hfetch.c
index bbf8097..197d9b9 100644
--- a/examples/hfetch.c
+++ b/examples/hfetch.c
@@ -20,6 +20,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <errno.h>
 #include <glib.h>
 #include <gnet.h>
 
@@ -153,7 +154,9 @@ hfetch(gchar* server, gint port, gchar* filename)
       if (n == 0)
 	break;
 
-      fwrite(buffer, n, 1, stdout);
+      if (fwrite(buffer, n, 1, stdout) != 1) {
+       fprintf (stderr, "Error: fwrite to stdout failed: %s\n", g_strerror (errno));
+      }
     }
   
   gnet_tcp_socket_delete(socket);