Minor changes.

[egate.git] / util / iso2709a.c

diff --git a/util/iso2709a.c b/util/iso2709a.c
index 6469df1..a802328 100644 (file)
--- a/util/iso2709a.c
+++ b/util/iso2709a.c
@@ -1,10 +1,59 @@
 /*
+ * Copyright (c) 1995, the EUROPAGATE consortium (see below).
+ *
+ * The EUROPAGATE consortium members are:
+ *
+ *    University College Dublin
+ *    Danmarks Teknologiske Videnscenter
+ *    An Chomhairle Leabharlanna
+ *    Consejo Superior de Investigaciones Cientificas
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation, in whole or in part, for any purpose, is hereby granted,
+ * provided that:
+ *
+ * 1. This copyright and permission notice appear in all copies of the
+ * software and its documentation. Notices of copyright or attribution
+ * which appear at the beginning of any file must remain unchanged.
+ *
+ * 2. The names of EUROPAGATE or the project partners may not be used to
+ * endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * 3. Users of this software (implementors and gateway operators) agree to
+ * inform the EUROPAGATE consortium of their use of the software. This
+ * information will be used to evaluate the EUROPAGATE project and the
+ * software, and to plan further developments. The consortium may use
+ * the information in later publications.
+ * 
+ * 4. Users of this software agree to make their best efforts, when
+ * documenting their use of the software, to acknowledge the EUROPAGATE
+ * consortium, and the role played by the software in their work.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS, IMPLIED, OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ * IN NO EVENT SHALL THE EUROPAGATE CONSORTIUM OR ITS MEMBERS BE LIABLE
+ * FOR ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF
+ * ANY KIND, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA
+ * OR PROFITS, WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND
+ * ON ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
+ * USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ */
+/*
  * Iso2709 record management - anchor utilities
  *
  * Europagate, 1995.
  *
  * $Log: iso2709a.c,v $
- * Revision 1.2  1995/03/30 07:33:35  adam
+ * Revision 1.4  1995/05/16 09:40:54  adam
+ * LICENSE.
+ *
+ * Revision 1.3  1995/03/30  14:22:18  adam
+ * More work on new MARC anchor functions.
+ *
+ * Revision 1.2  1995/03/30  07:33:35  adam
  * New 2709 function: iso2709_mk.
  * First implementation of iso2709_a_insert.
  *
@@ -91,9 +140,17 @@ int iso2709_a_info_field (Iso2709Anchor anchor,
     if (tag)
         *tag = (*anchor->d0)->tag;
     if (indicator)
+    {
         *indicator = (*anchor->d0)->indicator;
+        if (*indicator && !**indicator)
+            *indicator = NULL;
+    }
     if (identifier)
+    {
         *identifier = (*anchor->f0)->identifier;
+        if (*identifier && !**identifier)
+            *identifier = NULL;
+    }
     if (data)
         *data = (*anchor->f0)->data;
     return 1;
@@ -116,7 +173,6 @@ int iso2709_a_delete_field (Iso2709Anchor anchor)
         return 0;
     field = *anchor->f0;
     *anchor->f0 = field->next;
-    free (field->identifier);
     free (field->data);
     free (field);
     if (!*anchor->f0)
@@ -201,21 +257,19 @@ int iso2709_a_insert (Iso2709Anchor a,
        }
         else
            dir->indicator = NULL;
-       dir->next = *a->d0;
-       *a->d0 = dir;
+        if (*a->d0)
+            a->d0 = &(*a->d0)->next;
+        dir->next = *a->d0;
+        *a->d0 = dir;
        dir->fields = NULL;
        a->f0 = &dir->fields;
     }
     if (!(field = malloc (sizeof(*field))))
         return 0;
     if (identifier)
-    {
-        if (!(field->identifier = malloc (strlen (identifier)+1)))
-           return 0;
        strcpy (field->identifier, identifier);
-    }
     else
-        field->identifier = NULL;
+        *field->identifier = '\0';
     if (!(field->data = malloc (strlen (data)+1)))
        return 0;
     strcpy (field->data, data);