initial import (sf 0.3beta)

1 files changed, 86 insertions, 0 deletions

diff --git a/mixutils/mixvm_loop.c b/mixutils/mixvm_loop.c
new file mode 100644
index 0000000..a565832
--- /dev/null
+++ b/mixutils/mixvm_loop.c
@@ -0,0 +1,86 @@
+/* -*-c-*- -------------- mixvm_loop.c :
+ * Implementation of mix vm command loop.
+ * ------------------------------------------------------------------
+ * Copyright (C) 2000, 2001 Free Software Foundation, Inc.
+ *  
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *  
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *  
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *  
+ */
+
+
+#define _GNU_SOURCE 1
+#include <stdio.h>
+
+#include <mixlib/mix.h>
+#include "mixvm_command.h"
+
+#ifdef HAVE_LIBHISTORY
+#  include <readline/history.h>
+#else
+#  define add_history(x) ((void)0)
+#endif
+
+#ifdef HAVE_LIBREADLINE
+#  include <readline/readline.h>
+#else /* !HAVE_LIBREADLINE */
+static char *
+readline (char *prompt)
+{
+  char *line = NULL;
+  size_t s = 0;
+  
+  printf ("%s", prompt);
+  getline (&line, &s, stdin);
+  return line;
+}
+#endif /* HAVE_LIBREADLINE */
+
+/* A static variable for holding the line. */
+static char *line_read = (char *)NULL;
+static const char *PROMPT = N_("MIX > ");
+
+/* Read a string, and return a pointer to it.  Returns NULL on EOF. */
+static char *
+rl_gets ()
+{
+  /* If the buffer has already been allocated, return the memory
+     to the free pool. */
+  if (line_read)
+    {
+      g_free (line_read);
+      line_read = (char *)NULL;
+    }
+     
+  /* Get a line from the user. */
+  line_read = readline ((char *)PROMPT);
+     
+  /* If the line has any text in it, save it on the history. */
+  if (line_read && *line_read)
+    add_history (line_read);
+     
+  return (line_read);
+}
+
+
+/* The main command loop of the virtual machine  */
+void
+mix_vmloop (const gchar *file, gboolean use_emacs)
+{
+  mixvm_cmd_init ((char *)file, use_emacs);
+  while ( mixvm_cmd_exec (rl_gets ()) ) 
+    ;
+}
+
+