From c74b3cb41e5498ed863325fa060f5a1f2d1902d0 Mon Sep 17 00:00:00 2001
From: crunchy <crunchy>
Date: Fri, 13 Sep 2002 19:06:29 +0000
Subject: extended handling of SIGINT; support for stdin being a tty

---
 ChangeLog         |  5 +++++
 mpiosh/callback.c | 30 +++++++++++-------------------
 mpiosh/mpiosh.c   | 21 +++++++++++++++------
 3 files changed, 31 insertions(+), 25 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index a9e74ce..028a672 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -4,6 +4,11 @@
 
 2002-09-13  Andreas Buesching  <crunchy@tzi.de>
 
+	* mpiosh/callback.c (mpiosh_callback_mget, mpiosh_callback_mput) 
+	(mpiosh_callback_mdel): handling of user interrupt
+
+	* mpiosh/mpiosh.c: handling for stdin being a tty
+
 	* mpiosh/callback.c (mpiosh_callback_get, mpiosh_callback_put) 
 	(mpiosh_callback_del): using mpiosh_cancel to abort operation
 
diff --git a/mpiosh/callback.c b/mpiosh/callback.c
index 020b03f..deaec72 100644
--- a/mpiosh/callback.c
+++ b/mpiosh/callback.c
@@ -2,7 +2,7 @@
  *
  * Author: Andreas Büsching  <crunchy@tzi.de>
  *
- * $Id: callback.c,v 1.3 2002/09/13 15:20:25 crunchy Exp $
+ * $Id: callback.c,v 1.4 2002/09/13 19:06:30 crunchy Exp $
  *
  * Copyright (C) 2001 Andreas Büsching <crunchy@tzi.de>
  *
@@ -222,12 +222,7 @@ mpiosh_callback_get(int read, int total)
   printf("\rretrieved %.2f %%", ((double) read / total) * 100.0 );
   fflush(stdout);
 
-  if (mpiosh_cancel) {
-    mpiosh_cancel = 0;
-    return 1;
-  }
-  
-  return 0; // continue
+  return mpiosh_cancel; // continue
 }
 
 void
@@ -274,6 +269,7 @@ mpiosh_cmd_mget(char *args[])
 	  printf("getting '%s' ... \n", fname);
 	  size = mpio_file_get(mpiosh.dev, mpiosh.card,
 			       fname, mpiosh_callback_put);
+	  if (mpiosh_cancel) break;
 	  printf("\n");
 	} else {
 	  regerror(error, &regex, errortext, 100);
@@ -285,6 +281,8 @@ mpiosh_cmd_mget(char *args[])
     }
     i++;
   }
+
+  regfree(&regex);
 }
 
 BYTE
@@ -293,12 +291,7 @@ mpiosh_callback_put(int read, int total)
   printf("\rwrote %.2f %%", ((double) read / total) * 100.0 );
   fflush(stdout);
 
-  if (mpiosh_cancel) {
-    mpiosh_cancel = 0;
-    return 1;
-  }
-  
-  return 0; // continue
+  return mpiosh_cancel; // continue
 }
 
 void
@@ -343,6 +336,7 @@ mpiosh_cmd_mput(char *args[])
 	    printf("putting '%s' ... \n", (*run)->d_name);
 	    fsize = mpio_file_put(mpiosh.dev, mpiosh.card,
 				 (*run)->d_name, mpiosh_callback_put);
+	    if (mpiosh_cancel) break;
 	    printf("\n");
 	    written=1; /* we did write something, so do mpio_sync afterwards */
 	  } else {
@@ -357,6 +351,7 @@ mpiosh_cmd_mput(char *args[])
     }
     i++;
   }
+  regfree(&regex);
   if (written)
     mpio_sync(mpiosh.dev, mpiosh.card);
 }
@@ -367,12 +362,7 @@ mpiosh_callback_del(int read, int total)
   printf("\rdeleted %.2f %%", ((double) read / total) * 100.0 );
   fflush(stdout);
 
-  if (mpiosh_cancel) {
-    mpiosh_cancel = 0;
-    return 1;
-  }
-  
-  return 0; // continue
+  return mpiosh_cancel; // continue
 }
 
 void
@@ -421,6 +411,7 @@ mpiosh_cmd_mdel(char *args[])
 	  printf("deleting '%s' ... \n", fname);
 	  size = mpio_file_del(mpiosh.dev, mpiosh.card,
 			       fname, mpiosh_callback_del);
+	  if (mpiosh_cancel) break;
 	  printf("\n");
 	  deleted=1;
 	  /* if we delete a file, start again from the beginning, 
@@ -436,6 +427,7 @@ mpiosh_cmd_mdel(char *args[])
     }
     i++;
   }
+  regfree(&regex);
   if (deleted)
     mpio_sync(mpiosh.dev, mpiosh.card);
 }
diff --git a/mpiosh/mpiosh.c b/mpiosh/mpiosh.c
index 2db4e16..3bcf6d4 100644
--- a/mpiosh/mpiosh.c
+++ b/mpiosh/mpiosh.c
@@ -2,7 +2,7 @@
 
 /* 
  *
- * $Id: mpiosh.c,v 1.3 2002/09/13 15:20:25 crunchy Exp $
+ * $Id: mpiosh.c,v 1.4 2002/09/13 19:06:30 crunchy Exp $
  *
  * Author: Andreas Büsching  <crunchy@tzi.de>
  *
@@ -346,6 +346,7 @@ main(int argc, char *argv[]) {
   char **		cmds, **walk;
   mpiosh_cmd_t *	cmd;
   struct sigaction	sigc;
+  int			interactive = 1;
   
   UNUSED(argc);
   UNUSED(argv);
@@ -371,18 +372,23 @@ main(int argc, char *argv[]) {
   mpiosh_init();
   mpiosh.dev = mpio_init();
 
-  if (!mpiosh.dev) {
-    printf("could not find MPIO player.\n");
-  }
-
   if (mpiosh.card == MPIO_INTERNAL_MEM)
     mpiosh.prompt = PROMPT_INT;
   else
     mpiosh.prompt = PROMPT_EXT;
 
+  if (!isatty(fileno(stdin))) {
+    interactive = 0;
+    mpiosh.prompt = NULL;
+  }
+  
+  if (!mpiosh.dev && interactive) {
+    printf("could not find MPIO player.\n");
+  }
+
   while ((line = readline(mpiosh.prompt))) {
     if (*line == '\0') continue;
-    
+
     cmds = mpiosh_command_split(line);
 
     if (cmds[0][0] == '\0') {
@@ -411,6 +417,9 @@ main(int argc, char *argv[]) {
       walk++;
     }
     free(cmds);
+
+    /* reset abort state */
+    mpiosh_cancel = 0;    
   }
 
   mpiosh_cmd_quit(NULL);
-- 
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