Moved the value_string structures and function from packet.{c,h} into

a separate value_string.{c,h}.

svn path=/trunk/; revision=3221

1 files changed, 90 insertions, 0 deletions

diff --git a/epan/value_string.c b/epan/value_string.c
new file mode 100644
index 0000000000..66e0150e66
--- /dev/null
+++ b/epan/value_string.c
@@ -0,0 +1,90 @@
+/* value_string.c
+ * Routines for value_strings
+ *
+ * $Id: value_string.c,v 1.1 2001/04/01 03:18:41 hagbard Exp $
+ *
+ * Ethereal - Network traffic analyzer
+ * By Gerald Combs <gerald@zing.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * 
+ * 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <stdio.h>
+
+#ifdef NEED_SNPRINTF_H
+# include "snprintf.h"
+#endif
+#include "to_str.h"
+#include "value_string.h"
+
+/* Tries to match val against each element in the value_string array vs.
+   Returns the associated string ptr on a match.
+   Formats val with fmt, and returns the resulting string, on failure. */
+gchar*
+val_to_str(guint32 val, const value_string *vs, const char *fmt) {
+  gchar *ret;
+  static gchar  str[3][64];
+  static gchar *cur;
+
+  ret = match_strval(val, vs);
+  if (ret != NULL)
+    return ret;
+  if (cur == &str[0][0]) {
+    cur = &str[1][0];
+  } else if (cur == &str[1][0]) {  
+    cur = &str[2][0];
+  } else {  
+    cur = &str[0][0];
+  }
+  snprintf(cur, 64, fmt, val);
+  return cur;
+}
+
+/* Tries to match val against each element in the value_string array vs.
+   Returns the associated string ptr on a match, or NULL on failure. */
+gchar*
+match_strval(guint32 val, const value_string *vs) {
+  gint i = 0;
+  
+  while (vs[i].strptr) {
+    if (vs[i].value == val)
+      return(vs[i].strptr);
+    i++;
+  }
+
+  return(NULL);
+}
+
+/* Generate a string describing an enumerated bitfield (an N-bit field
+   with various specific values having particular names). */
+const char *
+decode_enumerated_bitfield(guint32 val, guint32 mask, int width,
+    const value_string *tab, const char *fmt)
+{
+  static char buf[1025];
+  char *p;
+
+  p = decode_bitfield_value(buf, val, mask, width);
+  sprintf(p, fmt, val_to_str(val & mask, tab, "Unknown"));
+  return buf;
+}
+
+