2 * Copyright (C) 1997-1999, Index Data
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.7 1999-05-20 12:57:18 adam
8 * Implemented TCL filter. Updated recctrl system.
10 * Revision 1.6 1999/02/02 14:51:27 adam
11 * Updated WIN32 code specific sections. Changed header.
13 * Revision 1.5 1997/11/18 10:03:24 adam
14 * Member num_children removed from data1_node.
16 * Revision 1.4 1997/10/27 14:34:26 adam
17 * Fixed bug - data1 root node wasn't tagged at all!
19 * Revision 1.3 1997/09/24 13:36:51 adam
20 * *** empty log message ***
22 * Revision 1.2 1997/09/17 12:19:21 adam
23 * Zebra version corresponds to YAZ version 1.4.
24 * Changed Zebra server so that it doesn't depend on global common_resource.
26 * Revision 1.1 1997/09/04 13:54:40 adam
27 * Added MARC filter - type grs.marc.<syntax> where syntax refers
28 * to abstract syntax. New method tellf in retrieve/extract method.
40 data1_node *data1_mk_node_wp (data1_handle dh, NMEM mem, data1_node *parent)
42 data1_node *res = data1_mk_node (dh, mem);
48 res->root = parent->root;
51 parent->child = parent->last_child = res;
53 parent->last_child->next = res;
54 parent->last_child = res;
59 static void destroy_data (struct data1_node *n)
61 assert (n->which == DATA1N_data);
62 xfree (n->u.data.data);
65 data1_node *data1_mk_node_text (data1_handle dh, NMEM mem, data1_node *parent,
66 const char *buf, size_t len)
68 data1_node *res = data1_mk_node_wp (dh, mem, parent);
69 res->which = DATA1N_data;
70 res->u.data.formatted_text = 0;
71 res->u.data.what = DATA1I_text;
72 res->u.data.len = len;
73 if (res->u.data.len > DATA1_LOCALDATA) {
74 res->u.data.data = xmalloc (res->u.data.len);
75 res->destroy = destroy_data;
78 res->u.data.data = res->lbuf;
79 memcpy (res->u.data.data, buf, res->u.data.len);
83 data1_node *data1_mk_node_tag (data1_handle dh, NMEM mem, data1_node *parent,
84 const char *tag, size_t len)
86 data1_element *elem = NULL;
87 data1_node *partag = get_parent_tag(dh, parent);
89 data1_element *e = NULL;
92 res = data1_mk_node_wp (dh, mem, parent);
94 res->which = DATA1N_tag;
95 res->u.tag.tag = res->lbuf;
96 res->u.tag.get_bytes = -1;
98 if (len >= DATA1_LOCALDATA)
99 len = DATA1_LOCALDATA-1;
101 memcpy (res->u.tag.tag, tag, len);
102 res->u.tag.tag[len] = '\0';
104 if (parent->which == DATA1N_variant)
107 if (!(e = partag->u.tag.element))
110 elem = data1_getelementbytagname (dh, res->root->u.root.absyn, e,
112 res->u.tag.element = elem;
113 res->u.tag.node_selected = 0;
114 res->u.tag.make_variantlist = 0;
115 res->u.tag.no_data_requested = 0;
121 data1_node *grs_read_marc (struct grs_read_info *p)
126 int indicator_length;
127 int identifier_length;
129 int length_data_entry;
131 int length_implementation;
137 data1_node *res_root;
140 data1_marctab *marctab;
142 if ((*p->readf)(p->fh, buf, 5) != 5)
144 record_length = atoi_n (buf, 5);
145 if (record_length < 25)
147 logf (LOG_WARN, "MARC record length < 25, is %d", record_length);
150 /* read remaining part - attempt to read one byte furhter... */
151 read_bytes = (*p->readf)(p->fh, buf+5, record_length-4);
152 if (read_bytes < record_length-5)
154 logf (LOG_WARN, "Couldn't read whole MARC record");
157 if (read_bytes == record_length - 4)
159 off_t cur_offset = (*p->tellf)(p->fh);
160 assert (cur_offset > 26);
162 (*p->endf)(p->fh, cur_offset - 1);
165 logf (LOG_DEBUG, "absynName = %s", absynName);
166 if (!(absyn = data1_get_absyn (p->dh, absynName)))
168 logf (LOG_WARN, "Unknown abstract syntax: %s", absynName);
171 res_root = data1_mk_node_wp (p->dh, p->mem, NULL);
172 res_root->which = DATA1N_root;
173 res_root->u.root.type = nmem_malloc (p->mem, strlen(absynName)+1);
174 strcpy (res_root->u.root.type, absynName);
175 res_root->u.root.absyn = absyn;
177 marctab = absyn->marc;
179 if (marctab && marctab->force_indicator_length >= 0)
180 indicator_length = marctab->force_indicator_length;
182 indicator_length = atoi_n (buf+10, 1);
183 if (marctab && marctab->force_identifier_length >= 0)
184 identifier_length = marctab->force_identifier_length;
186 identifier_length = atoi_n (buf+11, 1);
187 base_address = atoi_n (buf+12, 4);
190 length_data_entry = atoi_n (buf+20, 1);
191 length_starting = atoi_n (buf+21, 1);
192 length_implementation = atoi_n (buf+22, 1);
194 for (entry_p = 24; buf[entry_p] != ISO2709_FS; )
195 entry_p += 3+length_data_entry+length_starting;
196 base_address = entry_p+1;
197 for (entry_p = 24; buf[entry_p] != ISO2709_FS; )
205 data1_node *parent = res_root;
207 memcpy (tag, buf+entry_p, 3);
211 /* generate field node */
212 res = data1_mk_node_tag (p->dh, p->mem, res_root, tag, 3);
215 fprintf (outf, "%s ", tag);
217 data_length = atoi_n (buf+entry_p, length_data_entry);
218 entry_p += length_data_entry;
219 data_offset = atoi_n (buf+entry_p, length_starting);
220 entry_p += length_starting;
221 i = data_offset + base_address;
222 end_offset = i+data_length-1;
224 if (memcmp (tag, "00", 2) && indicator_length)
226 /* generate indicator node */
230 res = data1_mk_node_tag (p->dh, p->mem, res, buf+i,
233 for (j = 0; j<indicator_length; j++)
234 fprintf (outf, "%c", buf[j+i]);
236 i += indicator_length;
239 /* traverse sub fields */
241 while (buf[i] != ISO2709_RS && buf[i] != ISO2709_FS && i < end_offset)
243 if (memcmp (tag, "00", 2) && identifier_length)
246 data1_mk_node_tag (p->dh, p->mem, parent,
247 buf+i+1, identifier_length-1);
249 fprintf (outf, " $");
250 for (j = 1; j<identifier_length; j++)
251 fprintf (outf, "%c", buf[j+i]);
254 i += identifier_length;
256 while (buf[i] != ISO2709_RS && buf[i] != ISO2709_IDFS &&
257 buf[i] != ISO2709_FS && i < end_offset)
260 fprintf (outf, "%c", buf[i]);
264 data1_mk_node_text (p->dh, p->mem, res, buf + i0, i - i0);
270 fprintf (outf, "%c", buf[i]);
277 data1_node *res = data1_mk_node_tag (p->dh, p->mem,
279 data1_mk_node_text (p->dh, p->mem, res, buf + i0, i - i0);
282 fprintf (outf, "\n");
284 fprintf (outf, "-- separator but not at end of field\n");
285 if (buf[i] != ISO2709_RS && buf[i] != ISO2709_FS)
286 fprintf (outf, "-- no separator at end of field\n");
292 static void *grs_init_marc()
297 static void grs_destroy_marc(void *clientData)
301 static struct recTypeGrs marc_type = {
308 RecTypeGrs recTypeGrs_marc = &marc_type;