2 * Copyright (C) 1997-1999, Index Data
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.9 1999-06-25 13:47:25 adam
8 * Minor change that prevents MSVC warning.
10 * Revision 1.8 1999/05/26 07:49:14 adam
13 * Revision 1.7 1999/05/20 12:57:18 adam
14 * Implemented TCL filter. Updated recctrl system.
16 * Revision 1.6 1999/02/02 14:51:27 adam
17 * Updated WIN32 code specific sections. Changed header.
19 * Revision 1.5 1997/11/18 10:03:24 adam
20 * Member num_children removed from data1_node.
22 * Revision 1.4 1997/10/27 14:34:26 adam
23 * Fixed bug - data1 root node wasn't tagged at all!
25 * Revision 1.3 1997/09/24 13:36:51 adam
26 * *** empty log message ***
28 * Revision 1.2 1997/09/17 12:19:21 adam
29 * Zebra version corresponds to YAZ version 1.4.
30 * Changed Zebra server so that it doesn't depend on global common_resource.
32 * Revision 1.1 1997/09/04 13:54:40 adam
33 * Added MARC filter - type grs.marc.<syntax> where syntax refers
34 * to abstract syntax. New method tellf in retrieve/extract method.
46 data1_node *data1_mk_node_wp (data1_handle dh, NMEM mem, data1_node *parent)
48 data1_node *res = data1_mk_node (dh, mem);
54 res->root = parent->root;
57 parent->child = parent->last_child = res;
59 parent->last_child->next = res;
60 parent->last_child = res;
65 static void destroy_data (struct data1_node *n)
67 assert (n->which == DATA1N_data);
68 xfree (n->u.data.data);
71 data1_node *data1_mk_node_text (data1_handle dh, NMEM mem, data1_node *parent,
72 const char *buf, size_t len)
74 data1_node *res = data1_mk_node_wp (dh, mem, parent);
75 res->which = DATA1N_data;
76 res->u.data.formatted_text = 0;
77 res->u.data.what = DATA1I_text;
78 res->u.data.len = len;
79 if (res->u.data.len > DATA1_LOCALDATA) {
80 res->u.data.data = (char *) xmalloc (res->u.data.len);
81 res->destroy = destroy_data;
84 res->u.data.data = res->lbuf;
85 memcpy (res->u.data.data, buf, res->u.data.len);
89 data1_node *data1_mk_node_tag (data1_handle dh, NMEM mem, data1_node *parent,
90 const char *tag, size_t len)
92 data1_element *elem = NULL;
93 data1_node *partag = get_parent_tag(dh, parent);
95 data1_element *e = NULL;
98 res = data1_mk_node_wp (dh, mem, parent);
100 res->which = DATA1N_tag;
101 res->u.tag.tag = res->lbuf;
102 res->u.tag.get_bytes = -1;
104 if (len >= DATA1_LOCALDATA)
105 len = DATA1_LOCALDATA-1;
107 memcpy (res->u.tag.tag, tag, len);
108 res->u.tag.tag[len] = '\0';
110 if (parent->which == DATA1N_variant)
113 if (!(e = partag->u.tag.element))
116 elem = data1_getelementbytagname (dh, res->root->u.root.absyn, e,
118 res->u.tag.element = elem;
119 res->u.tag.node_selected = 0;
120 res->u.tag.make_variantlist = 0;
121 res->u.tag.no_data_requested = 0;
127 data1_node *grs_read_marc (struct grs_read_info *p)
132 int indicator_length;
133 int identifier_length;
135 int length_data_entry;
137 int length_implementation;
143 data1_node *res_root;
146 data1_marctab *marctab;
148 if ((*p->readf)(p->fh, buf, 5) != 5)
150 record_length = atoi_n (buf, 5);
151 if (record_length < 25)
153 logf (LOG_WARN, "MARC record length < 25, is %d", record_length);
156 /* read remaining part - attempt to read one byte furhter... */
157 read_bytes = (*p->readf)(p->fh, buf+5, record_length-4);
158 if (read_bytes < record_length-5)
160 logf (LOG_WARN, "Couldn't read whole MARC record");
163 if (read_bytes == record_length - 4)
165 off_t cur_offset = (*p->tellf)(p->fh);
166 assert (cur_offset > 26);
168 (*p->endf)(p->fh, cur_offset - 1);
171 logf (LOG_DEBUG, "absynName = %s", absynName);
172 if (!(absyn = data1_get_absyn (p->dh, absynName)))
174 logf (LOG_WARN, "Unknown abstract syntax: %s", absynName);
177 res_root = data1_mk_node_wp (p->dh, p->mem, NULL);
178 res_root->which = DATA1N_root;
179 res_root->u.root.type = (char *) nmem_malloc (p->mem, strlen(absynName)+1);
180 strcpy (res_root->u.root.type, absynName);
181 res_root->u.root.absyn = absyn;
183 marctab = absyn->marc;
185 if (marctab && marctab->force_indicator_length >= 0)
186 indicator_length = marctab->force_indicator_length;
188 indicator_length = atoi_n (buf+10, 1);
189 if (marctab && marctab->force_identifier_length >= 0)
190 identifier_length = marctab->force_identifier_length;
192 identifier_length = atoi_n (buf+11, 1);
193 base_address = atoi_n (buf+12, 4);
196 length_data_entry = atoi_n (buf+20, 1);
197 length_starting = atoi_n (buf+21, 1);
198 length_implementation = atoi_n (buf+22, 1);
200 for (entry_p = 24; buf[entry_p] != ISO2709_FS; )
201 entry_p += 3+length_data_entry+length_starting;
202 base_address = entry_p+1;
203 for (entry_p = 24; buf[entry_p] != ISO2709_FS; )
211 data1_node *parent = res_root;
213 memcpy (tag, buf+entry_p, 3);
217 /* generate field node */
218 res = data1_mk_node_tag (p->dh, p->mem, res_root, tag, 3);
221 fprintf (outf, "%s ", tag);
223 data_length = atoi_n (buf+entry_p, length_data_entry);
224 entry_p += length_data_entry;
225 data_offset = atoi_n (buf+entry_p, length_starting);
226 entry_p += length_starting;
227 i = data_offset + base_address;
228 end_offset = i+data_length-1;
230 if (memcmp (tag, "00", 2) && indicator_length)
232 /* generate indicator node */
236 res = data1_mk_node_tag (p->dh, p->mem, res, buf+i,
239 for (j = 0; j<indicator_length; j++)
240 fprintf (outf, "%c", buf[j+i]);
242 i += indicator_length;
245 /* traverse sub fields */
247 while (buf[i] != ISO2709_RS && buf[i] != ISO2709_FS && i < end_offset)
249 if (memcmp (tag, "00", 2) && identifier_length)
252 data1_mk_node_tag (p->dh, p->mem, parent,
253 buf+i+1, identifier_length-1);
255 fprintf (outf, " $");
256 for (j = 1; j<identifier_length; j++)
257 fprintf (outf, "%c", buf[j+i]);
260 i += identifier_length;
262 while (buf[i] != ISO2709_RS && buf[i] != ISO2709_IDFS &&
263 buf[i] != ISO2709_FS && i < end_offset)
266 fprintf (outf, "%c", buf[i]);
270 data1_mk_node_text (p->dh, p->mem, res, buf + i0, i - i0);
276 fprintf (outf, "%c", buf[i]);
283 data1_node *res = data1_mk_node_tag (p->dh, p->mem,
285 data1_mk_node_text (p->dh, p->mem, res, buf + i0, i - i0);
288 fprintf (outf, "\n");
290 fprintf (outf, "-- separator but not at end of field\n");
291 if (buf[i] != ISO2709_RS && buf[i] != ISO2709_FS)
292 fprintf (outf, "-- no separator at end of field\n");
298 static void *grs_init_marc(void)
303 static void grs_destroy_marc(void *clientData)
307 static struct recTypeGrs marc_type = {
314 RecTypeGrs recTypeGrs_marc = &marc_type;