2 * Copyright (C) 1997-1999, Index Data
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.8 1999-05-26 07:49:14 adam
10 * Revision 1.7 1999/05/20 12:57:18 adam
11 * Implemented TCL filter. Updated recctrl system.
13 * Revision 1.6 1999/02/02 14:51:27 adam
14 * Updated WIN32 code specific sections. Changed header.
16 * Revision 1.5 1997/11/18 10:03:24 adam
17 * Member num_children removed from data1_node.
19 * Revision 1.4 1997/10/27 14:34:26 adam
20 * Fixed bug - data1 root node wasn't tagged at all!
22 * Revision 1.3 1997/09/24 13:36:51 adam
23 * *** empty log message ***
25 * Revision 1.2 1997/09/17 12:19:21 adam
26 * Zebra version corresponds to YAZ version 1.4.
27 * Changed Zebra server so that it doesn't depend on global common_resource.
29 * Revision 1.1 1997/09/04 13:54:40 adam
30 * Added MARC filter - type grs.marc.<syntax> where syntax refers
31 * to abstract syntax. New method tellf in retrieve/extract method.
43 data1_node *data1_mk_node_wp (data1_handle dh, NMEM mem, data1_node *parent)
45 data1_node *res = data1_mk_node (dh, mem);
51 res->root = parent->root;
54 parent->child = parent->last_child = res;
56 parent->last_child->next = res;
57 parent->last_child = res;
62 static void destroy_data (struct data1_node *n)
64 assert (n->which == DATA1N_data);
65 xfree (n->u.data.data);
68 data1_node *data1_mk_node_text (data1_handle dh, NMEM mem, data1_node *parent,
69 const char *buf, size_t len)
71 data1_node *res = data1_mk_node_wp (dh, mem, parent);
72 res->which = DATA1N_data;
73 res->u.data.formatted_text = 0;
74 res->u.data.what = DATA1I_text;
75 res->u.data.len = len;
76 if (res->u.data.len > DATA1_LOCALDATA) {
77 res->u.data.data = (char *) xmalloc (res->u.data.len);
78 res->destroy = destroy_data;
81 res->u.data.data = res->lbuf;
82 memcpy (res->u.data.data, buf, res->u.data.len);
86 data1_node *data1_mk_node_tag (data1_handle dh, NMEM mem, data1_node *parent,
87 const char *tag, size_t len)
89 data1_element *elem = NULL;
90 data1_node *partag = get_parent_tag(dh, parent);
92 data1_element *e = NULL;
95 res = data1_mk_node_wp (dh, mem, parent);
97 res->which = DATA1N_tag;
98 res->u.tag.tag = res->lbuf;
99 res->u.tag.get_bytes = -1;
101 if (len >= DATA1_LOCALDATA)
102 len = DATA1_LOCALDATA-1;
104 memcpy (res->u.tag.tag, tag, len);
105 res->u.tag.tag[len] = '\0';
107 if (parent->which == DATA1N_variant)
110 if (!(e = partag->u.tag.element))
113 elem = data1_getelementbytagname (dh, res->root->u.root.absyn, e,
115 res->u.tag.element = elem;
116 res->u.tag.node_selected = 0;
117 res->u.tag.make_variantlist = 0;
118 res->u.tag.no_data_requested = 0;
124 data1_node *grs_read_marc (struct grs_read_info *p)
129 int indicator_length;
130 int identifier_length;
132 int length_data_entry;
134 int length_implementation;
140 data1_node *res_root;
143 data1_marctab *marctab;
145 if ((*p->readf)(p->fh, buf, 5) != 5)
147 record_length = atoi_n (buf, 5);
148 if (record_length < 25)
150 logf (LOG_WARN, "MARC record length < 25, is %d", record_length);
153 /* read remaining part - attempt to read one byte furhter... */
154 read_bytes = (*p->readf)(p->fh, buf+5, record_length-4);
155 if (read_bytes < record_length-5)
157 logf (LOG_WARN, "Couldn't read whole MARC record");
160 if (read_bytes == record_length - 4)
162 off_t cur_offset = (*p->tellf)(p->fh);
163 assert (cur_offset > 26);
165 (*p->endf)(p->fh, cur_offset - 1);
168 logf (LOG_DEBUG, "absynName = %s", absynName);
169 if (!(absyn = data1_get_absyn (p->dh, absynName)))
171 logf (LOG_WARN, "Unknown abstract syntax: %s", absynName);
174 res_root = data1_mk_node_wp (p->dh, p->mem, NULL);
175 res_root->which = DATA1N_root;
176 res_root->u.root.type = (char *) nmem_malloc (p->mem, strlen(absynName)+1);
177 strcpy (res_root->u.root.type, absynName);
178 res_root->u.root.absyn = absyn;
180 marctab = absyn->marc;
182 if (marctab && marctab->force_indicator_length >= 0)
183 indicator_length = marctab->force_indicator_length;
185 indicator_length = atoi_n (buf+10, 1);
186 if (marctab && marctab->force_identifier_length >= 0)
187 identifier_length = marctab->force_identifier_length;
189 identifier_length = atoi_n (buf+11, 1);
190 base_address = atoi_n (buf+12, 4);
193 length_data_entry = atoi_n (buf+20, 1);
194 length_starting = atoi_n (buf+21, 1);
195 length_implementation = atoi_n (buf+22, 1);
197 for (entry_p = 24; buf[entry_p] != ISO2709_FS; )
198 entry_p += 3+length_data_entry+length_starting;
199 base_address = entry_p+1;
200 for (entry_p = 24; buf[entry_p] != ISO2709_FS; )
208 data1_node *parent = res_root;
210 memcpy (tag, buf+entry_p, 3);
214 /* generate field node */
215 res = data1_mk_node_tag (p->dh, p->mem, res_root, tag, 3);
218 fprintf (outf, "%s ", tag);
220 data_length = atoi_n (buf+entry_p, length_data_entry);
221 entry_p += length_data_entry;
222 data_offset = atoi_n (buf+entry_p, length_starting);
223 entry_p += length_starting;
224 i = data_offset + base_address;
225 end_offset = i+data_length-1;
227 if (memcmp (tag, "00", 2) && indicator_length)
229 /* generate indicator node */
233 res = data1_mk_node_tag (p->dh, p->mem, res, buf+i,
236 for (j = 0; j<indicator_length; j++)
237 fprintf (outf, "%c", buf[j+i]);
239 i += indicator_length;
242 /* traverse sub fields */
244 while (buf[i] != ISO2709_RS && buf[i] != ISO2709_FS && i < end_offset)
246 if (memcmp (tag, "00", 2) && identifier_length)
249 data1_mk_node_tag (p->dh, p->mem, parent,
250 buf+i+1, identifier_length-1);
252 fprintf (outf, " $");
253 for (j = 1; j<identifier_length; j++)
254 fprintf (outf, "%c", buf[j+i]);
257 i += identifier_length;
259 while (buf[i] != ISO2709_RS && buf[i] != ISO2709_IDFS &&
260 buf[i] != ISO2709_FS && i < end_offset)
263 fprintf (outf, "%c", buf[i]);
267 data1_mk_node_text (p->dh, p->mem, res, buf + i0, i - i0);
273 fprintf (outf, "%c", buf[i]);
280 data1_node *res = data1_mk_node_tag (p->dh, p->mem,
282 data1_mk_node_text (p->dh, p->mem, res, buf + i0, i - i0);
285 fprintf (outf, "\n");
287 fprintf (outf, "-- separator but not at end of field\n");
288 if (buf[i] != ISO2709_RS && buf[i] != ISO2709_FS)
289 fprintf (outf, "-- no separator at end of field\n");
295 static void *grs_init_marc()
300 static void grs_destroy_marc(void *clientData)
304 static struct recTypeGrs marc_type = {
311 RecTypeGrs recTypeGrs_marc = &marc_type;