/*
- gw-res.c: Iso2709 record management
-
- Europagate, 1994-1995.
-
- $Log: iso2709.c,v $
- Revision 1.1 1995/02/09 17:27:10 adam
- Initial revision
-
+ * 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
+ *
+ * Europagate, 1994-1995.
+ *
+ * $Log: iso2709.c,v $
+ * Revision 1.17 1995/12/20 16:28:08 adam
+ * Extra parameter block to gw_db_open. If block is 0 gw_db_open
+ * returns NULL if lock couldn't be satisfied.
+ * Minor changes in iso2709.c.
+ *
+ * Revision 1.16 1995/05/16 09:40:53 adam
+ * LICENSE.
+ *
+ * Revision 1.15 1995/03/31 10:42:41 adam
+ * Bug fix.
+ *
+ * Revision 1.14 1995/03/30 14:22:18 adam
+ * More work on new MARC anchor functions.
+ *
+ * Revision 1.13 1995/03/30 07:33:32 adam
+ * New 2709 function: iso2709_mk.
+ * First implementation of iso2709_a_insert.
+ *
+ * Revision 1.12 1995/03/29 16:08:56 adam
+ * Better error recovery when using bad records.
+ *
+ * Revision 1.11 1995/03/28 16:07:07 adam
+ * New function: iso2709_out. This function is the reverse of iso2709_cvt.
+ *
+ * Revision 1.10 1995/03/10 09:10:56 adam
+ * Removed dbc2709_cvt function. Makes heuristic guess for DBC2709 records.
+ *
+ * Revision 1.9 1995/03/08 12:36:39 adam
+ * New function: dbc2709_cvt.
+ *
+ * Revision 1.8 1995/03/08 12:03:15 adam
+ * Hack: When tags 00? are used, every separator (DC[1-3]) marks
+ * the end of the data field.
+ *
+ * Revision 1.7 1995/02/22 21:28:03 adam
+ * Changed header.
+ *
+ * Revision 1.5 1995/02/22 15:24:14 adam
+ * Function iso2709_cvt makes a litte check for the format. It returns
+ * NULL if the buffer parameter can never be a MARC record.
+ *
+ * Revision 1.4 1995/02/15 17:45:44 adam
+ * Bug fix in iso2709 module.
+ *
+ * Revision 1.3 1995/02/10 17:05:18 adam
+ * New function iso2709_display to display MARC records in a
+ * line-by-line format. The iso2709_cvt function no longer
+ * prints the record to stderr.
+ *
+ * Revision 1.2 1995/02/10 16:50:32 adam
+ * Indicator field moved to 'struct iso2709_dir' from 'struct
+ * iso2709_field'.
+ * Function iso2709_rm implemented - to delete a MARC record.
+ *
+ * Revision 1.1.1.1 1995/02/09 17:27:11 adam
+ * Initial version of email gateway under CVS control.
+ *
*/
#include <stdlib.h>
s++;
}
*d = '\0';
-#if 0
- strncpy (d, s, n);
- d[n] = '\0';
-#endif
}
char *iso2709_read (FILE *inf)
return buf;
}
+Iso2709Rec iso2709_mk (void)
+{
+ Iso2709Rec p;
+
+ if (!(p = malloc (sizeof(*p))))
+ return NULL;
+
+ p->record_length = 0;
+ strncpyx (p->record_status, " ", 1);
+ strncpyx (p->implementation_codes, " ", 4);
+ p->indicator_length = 2;
+ p->identifier_length = 2;
+ p->base_address = 0;
+ strncpyx (p->user_systems, " ", 3);
+ p->length_data_entry = 4;
+ p->length_starting = 5;
+ p->length_implementation = 0;
+ strncpyx (p->future_use, " ", 1);
+
+ p->directory = NULL;
+ return p;
+}
+
Iso2709Rec iso2709_cvt (const char *buf)
{
struct iso2709_dir **dpp, *dp;
if (!(p = malloc (sizeof(*p))))
return NULL;
+ /* deal with record label (24 characters) */
p->record_length = atoin (buf, 5);
strncpyx (p->record_status, buf+5, 1);
strncpyx (p->implementation_codes, buf+6, 4);
p->base_address = atoin (buf+12, 4);
strncpyx (p->user_systems, buf+17, 3);
+ if (p->record_length < 26)
+ {
+ free (p);
+ return NULL;
+ }
p->length_data_entry = atoin (buf+20, 1);
p->length_starting = atoin (buf+21, 1);
p->length_implementation = atoin (buf+22, 1);
strncpyx (p->future_use, buf+23, 1);
+ /* deal with directory */
dpp = &p->directory;
-
*dpp = NULL;
while (buf[pos] != ISO2709_FS)
{
- *dpp = malloc (sizeof(**dpp));
+ if (!(*dpp = malloc (sizeof(**dpp))))
+ {
+ iso2709_rm (p);
+ return NULL;
+ }
(*dpp)->next = NULL;
+ (*dpp)->fields = NULL;
+ (*dpp)->indicator = NULL;
strncpyx ((*dpp)->tag, buf+pos, 3);
pos += 3;
(*dpp)->length = atoin (buf+pos, p->length_data_entry);
pos += p->length_starting + p->length_implementation;
dpp = &(*dpp)->next;
+ if (pos > p->record_length)
+ {
+ iso2709_rm (p);
+ return NULL;
+ }
}
pos++;
-#if 0
- fprintf (stderr, "indicator_len=%d, identifier_len=%d\n",
- p->indicator_length, p->identifier_length);
-#endif
+ /* deal with datafields */
for (dp = p->directory; dp; dp = dp->next)
{
- int tag00;
+ int identifier_flag;
struct iso2709_field **fpp;
int dpos = pos+dp->offset;
- char *save_indicator = NULL;
+ int epos = pos+dp->offset+dp->length-1;
+ if (epos <= dpos)
+ {
+ iso2709_rm (p);
+ return NULL;
+ }
fpp = &dp->fields;
- *fpp = malloc (sizeof(**fpp));
+ if (!(*fpp = malloc (sizeof(**fpp))))
+ {
+ iso2709_rm (p);
+ return NULL;
+ }
(*fpp)->next = NULL;
- if (p->indicator_length && memcmp (dp->tag, "00", 2))
+
+ identifier_flag = 1;
+ if (p->indicator_length)
{
- (*fpp)->indicator = malloc (p->indicator_length+1);
- strncpyx ((*fpp)->indicator, buf+dpos, p->indicator_length);
+#if WEIRD_ISO_DBC
+ if (buf[dpos+p->indicator_length] != ISO2709_IDFS)
+ identifier_flag = 0;
+#else
+ if (!memcmp (dp->tag, "00", 2))
+ identifier_flag = 0;
+#endif
+ }
+ else if (!memcmp (dp->tag, "00", 2))
+ identifier_flag = 0;
+ if (identifier_flag && p->indicator_length)
+ {
+ if (!(dp->indicator = malloc (p->indicator_length+1)))
+ {
+ iso2709_rm (p);
+ return NULL;
+ }
+ strncpyx (dp->indicator, buf+dpos, p->indicator_length);
dpos += p->indicator_length;
}
else
- (*fpp)->indicator = NULL;
-
- if (memcmp (dp->tag, "00", 2))
- tag00 = 0;
- else
- tag00 = 1;
- fprintf (stderr, "%s", dp->tag);
+ dp->indicator = NULL;
while (1)
{
int dpos_n;
- if (p->identifier_length && !tag00)
+ if (p->identifier_length && identifier_flag)
{
- (*fpp)->identifier = malloc (p->identifier_length+1);
strncpyx ((*fpp)->identifier, buf+dpos+1,
p->identifier_length-1);
- dpos += p->identifier_length;
+ dpos_n = dpos += p->identifier_length;
+ while (buf[dpos_n] != ISO2709_FS && buf[dpos_n] != ISO2709_RS
+ && buf[dpos_n] != ISO2709_IDFS && dpos_n < epos)
+ dpos_n++;
}
else
- (*fpp)->identifier = NULL;
-
- dpos_n = dpos;
- while (buf[dpos_n] != ISO2709_FS && buf[dpos_n] != ISO2709_IDFS)
- dpos_n++;
-
- (*fpp)->data = malloc (dpos_n - dpos + 1);
+ {
+ *(*fpp)->identifier = '\0';
+ dpos_n = dpos;
+ while (buf[dpos_n] != ISO2709_FS && buf[dpos_n] != ISO2709_RS
+ && dpos_n < epos)
+ dpos_n++;
+ }
+ if (!((*fpp)->data = malloc (dpos_n - dpos + 1)))
+ {
+ iso2709_rm (p);
+ return NULL;
+ }
strncpyx ((*fpp)->data, buf+dpos, dpos_n - dpos);
dpos = dpos_n;
- if (!save_indicator && (*fpp)->indicator)
- fprintf (stderr, " %s", (*fpp)->indicator);
- if ((*fpp)->identifier)
- fprintf (stderr, " *%s", (*fpp)->identifier);
- fprintf (stderr, " %s", (*fpp)->data);
- if (buf[dpos] == ISO2709_FS)
+ if (dpos >= epos)
+ {
+ if (buf[dpos] != ISO2709_FS && buf[dpos] != ISO2709_RS)
+ fprintf (stderr, "Missing separator at end of field "
+ "in %s %s\n", dp->tag, (*fpp)->identifier);
break;
-
- save_indicator = (*fpp)->indicator;
+ }
+ if (buf[dpos] == ISO2709_FS || buf[dpos] == ISO2709_RS)
+ {
+ fprintf (stderr, "Unexpected separator inside field %s %s\n",
+ dp->tag, (*fpp)->identifier);
+ break;
+ }
fpp = &(*fpp)->next;
- *fpp = malloc (sizeof(**fpp));
+ if (!(*fpp = malloc (sizeof(**fpp))))
+ {
+ iso2709_rm (p);
+ return NULL;
+ }
(*fpp)->next = NULL;
- (*fpp)->indicator = save_indicator;
}
- fprintf (stderr, "\n");
}
return p;
}
+
+void iso2709_rm (Iso2709Rec rec)
+{
+ struct iso2709_dir *dir, *dir1;
+
+ for (dir = rec->directory; dir; dir = dir1)
+ {
+ struct iso2709_field *field, *field1;
+
+ for (field = dir->fields; field; field = field1)
+ {
+ free (field->data);
+ field1 = field->next;
+ free (field);
+ }
+ free (dir->indicator);
+ dir1 = dir->next;
+ free (dir);
+ }
+}
+
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