source: main/tags/2.25a/gsdl/packages/yaz/retrieval/d1_espec.c@ 21893

Last change on this file since 21893 was 1343, checked in by johnmcp, 24 years ago

Added the YAZ toolkit source to the packages directory (for z39.50 stuff)
  • Property svn:keywords set to Author Date Id Revision
File size: 10.9 KB
Line 
1/*
2 * Copyright (c) 1995-1999, Index Data.
3 * See the file LICENSE for details.
4 * Sebastian Hammer, Adam Dickmeiss
5 *
6 * $Log$
7 * Revision 1.1 2000/08/03 03:11:29 johnmcp
8 * Added the YAZ toolkit source to the packages directory (for z39.50 stuff)
9 *
10 * Revision 1.18 1999/11/30 13:47:12 adam
11 * Improved installation. Moved header files to include/yaz.
12 *
13 * Revision 1.17 1999/10/21 12:06:29 adam
14 * Retrieval module no longer uses ctype.h - functions.
15 *
16 * Revision 1.16 1999/08/27 09:40:32 adam
17 * Renamed logf function to yaz_log. Removed VC++ project files.
18 *
19 * Revision 1.15 1998/10/13 16:09:49 adam
20 * Added support for arbitrary OID's for tagsets, schemas and attribute sets.
21 * Added support for multiple attribute set references and tagset references
22 * from an abstract syntax file.
23 * Fixed many bad logs-calls in routines that read the various
24 * specifications regarding data1 (*.abs,*.att,...) and made the messages
25 * consistent whenever possible.
26 * Added extra 'lineno' argument to function readconf_line.
27 *
28 * Revision 1.14 1998/02/11 11:53:35 adam
29 * Changed code so that it compiles as C++.
30 *
31 * Revision 1.13 1997/11/24 11:33:56 adam
32 * Using function odr_nullval() instead of global ODR_NULLVAL when
33 * appropriate.
34 *
35 * Revision 1.12 1997/10/31 12:20:09 adam
36 * Improved memory debugging for xmalloc/nmem.c. References to NMEM
37 * instead of ODR in n ESPEC-1 handling in source d1_espec.c.
38 * Bug fix: missing fclose in data1_read_espec1.
39 *
40 * Revision 1.11 1997/09/29 13:18:59 adam
41 * Added function, oid_ent_to_oid, to replace the function
42 * oid_getoidbyent, which is not thread safe.
43 *
44 * Revision 1.10 1997/09/29 07:21:10 adam
45 * Added typecast to avoid warnings on MSVC.
46 *
47 * Revision 1.9 1997/09/17 12:10:35 adam
48 * YAZ version 1.4.
49 *
50 * Revision 1.8 1997/09/05 09:50:56 adam
51 * Removed global data1_tabpath - uses data1_get_tabpath() instead.
52 *
53 * Revision 1.7 1997/05/14 06:54:02 adam
54 * C++ support.
55 *
56 * Revision 1.6 1996/07/06 19:58:34 quinn
57 * System headerfiles gathered in yconfig
58 *
59 * Revision 1.5 1996/01/02 08:57:44 quinn
60 * Changed enums in the ASN.1 .h files to #defines. Changed oident.class to oclass
61 *
62 * Revision 1.4 1995/12/05 11:16:10 quinn
63 * Fixed malloc of 0.
64 *
65 * Revision 1.3 1995/11/13 09:27:34 quinn
66 * Fiddling with the variant stuff.
67 *
68 * Revision 1.2 1995/11/01 16:34:56 quinn
69 * Making data1 look for tables in data1_tabpath
70 *
71 * Revision 1.1 1995/11/01 11:56:07 quinn
72 * Added Retrieval (data management) functions en masse.
73 *
74 *
75 */
76
77
78#include <stdlib.h>
79#include <assert.h>
80#include <string.h>
81
82#include <yaz/odr.h>
83#include <yaz/proto.h>
84#include <yaz/log.h>
85#include <yaz/data1.h>
86
87static Z_Variant *read_variant(int argc, char **argv, NMEM nmem,
88 const char *file, int lineno)
89{
90 Z_Variant *r = (Z_Variant *)nmem_malloc(nmem, sizeof(*r));
91 oident var1;
92 int i;
93 int oid[OID_SIZE];
94
95 var1.proto = PROTO_Z3950;
96 var1.oclass = CLASS_VARSET;
97 var1.value = VAL_VAR1;
98 r->globalVariantSetId = odr_oiddup_nmem(nmem, oid_ent_to_oid(&var1, oid));
99
100 if (argc)
101 r->triples = (Z_Triple **)nmem_malloc(nmem, sizeof(Z_Triple*) * argc);
102 else
103 r->triples = 0;
104 r->num_triples = argc;
105 for (i = 0; i < argc; i++)
106 {
107 int zclass, type;
108 char value[512];
109 Z_Triple *t;
110
111 if (sscanf(argv[i], "(%d,%d,%[^)])", &zclass, &type, value) < 3)
112 {
113 yaz_log(LOG_WARN, "%s:%d: Syntax error in variant component '%s'",
114 file, lineno, argv[i]);
115 return 0;
116 }
117 t = r->triples[i] = (Z_Triple *)nmem_malloc(nmem, sizeof(Z_Triple));
118 t->variantSetId = 0;
119 t->zclass = (int *)nmem_malloc(nmem, sizeof(int));
120 *t->zclass = zclass;
121 t->type = (int *)nmem_malloc(nmem, sizeof(int));
122 *t->type = type;
123 /*
124 * This is wrong.. we gotta look up the correct type for the
125 * variant, I guess... damn this stuff.
126 */
127 if (*value == '@')
128 {
129 t->which = Z_Triple_null;
130 t->value.null = odr_nullval();
131 }
132 else if (d1_isdigit(*value))
133 {
134 t->which = Z_Triple_integer;
135 t->value.integer = (int *)
136 nmem_malloc(nmem, sizeof(*t->value.integer));
137 *t->value.integer = atoi(value);
138 }
139 else
140 {
141 t->which = Z_Triple_internationalString;
142 t->value.internationalString = (char *)
143 nmem_malloc(nmem, strlen(value)+1);
144 strcpy(t->value.internationalString, value);
145 }
146 }
147 return r;
148}
149
150static Z_Occurrences *read_occurrences(char *occ, NMEM nmem,
151 const char *file, int lineno)
152{
153 Z_Occurrences *op = (Z_Occurrences *)nmem_malloc(nmem, sizeof(*op));
154 char *p;
155
156 if (!occ)
157 {
158 op->which = Z_Occurrences_values;
159 op->u.values = (Z_OccurValues *)
160 nmem_malloc(nmem, sizeof(Z_OccurValues));
161 op->u.values->start = (int *)nmem_malloc(nmem, sizeof(int));
162 *op->u.values->start = 1;
163 op->u.values->howMany = 0;
164 }
165 else if (!strcmp(occ, "all"))
166 {
167 op->which = Z_Occurrences_all;
168 op->u.all = odr_nullval();
169 }
170 else if (!strcmp(occ, "last"))
171 {
172 op->which = Z_Occurrences_last;
173 op->u.all = odr_nullval();
174 }
175 else
176 {
177 Z_OccurValues *ov = (Z_OccurValues *)nmem_malloc(nmem, sizeof(*ov));
178
179 if (!d1_isdigit(*occ))
180 {
181 yaz_log(LOG_WARN, "%s:%d: Bad occurrences-spec %s",
182 file, lineno, occ);
183 return 0;
184 }
185 op->which = Z_Occurrences_values;
186 op->u.values = ov;
187 ov->start = (int *)nmem_malloc(nmem, sizeof(*ov->start));
188 *ov->start = atoi(occ);
189 if ((p = strchr(occ, '+')))
190 {
191 ov->howMany = (int *)nmem_malloc(nmem, sizeof(*ov->howMany));
192 *ov->howMany = atoi(p + 1);
193 }
194 else
195 ov->howMany = 0;
196 }
197 return op;
198}
199
200
201static Z_ETagUnit *read_tagunit(char *buf, NMEM nmem,
202 const char *file, int lineno)
203{
204 Z_ETagUnit *u = (Z_ETagUnit *)nmem_malloc(nmem, sizeof(*u));
205 int terms;
206 int type;
207 char value[512], occ[512];
208
209 if (*buf == '*')
210 {
211 u->which = Z_ETagUnit_wildPath;
212 u->u.wildPath = odr_nullval();
213 }
214 else if (*buf == '?')
215 {
216 u->which = Z_ETagUnit_wildThing;
217 if (buf[1] == ':')
218 u->u.wildThing = read_occurrences(buf+2, nmem, file, lineno);
219 else
220 u->u.wildThing = read_occurrences(0, nmem, file, lineno);
221 }
222 else if ((terms = sscanf(buf, "(%d,%[^)]):%[a-z0-9+]", &type, value,
223 occ)) >= 2)
224 {
225 int numval;
226 Z_SpecificTag *t;
227 char *valp = value;
228 int force_string = 0;
229
230 if (*valp == '\'')
231 {
232 valp++;
233 force_string = 1;
234 }
235 u->which = Z_ETagUnit_specificTag;
236 u->u.specificTag = t = (Z_SpecificTag *)nmem_malloc(nmem, sizeof(*t));
237 t->tagType = (int *)nmem_malloc(nmem, sizeof(*t->tagType));
238 *t->tagType = type;
239 t->tagValue = (Z_StringOrNumeric *)
240 nmem_malloc(nmem, sizeof(*t->tagValue));
241 if (!force_string && (numval = atoi(valp)))
242 {
243 t->tagValue->which = Z_StringOrNumeric_numeric;
244 t->tagValue->u.numeric = (int *)nmem_malloc(nmem, sizeof(int));
245 *t->tagValue->u.numeric = numval;
246 }
247 else
248 {
249 t->tagValue->which = Z_StringOrNumeric_string;
250 t->tagValue->u.string = (char *)nmem_malloc(nmem, strlen(valp)+1);
251 strcpy(t->tagValue->u.string, valp);
252 }
253 if (terms > 2) /* an occurrences-spec exists */
254 t->occurrences = read_occurrences(occ, nmem, file, lineno);
255 else
256 t->occurrences = 0;
257 }
258 return u;
259}
260
261/*
262 * Read an element-set specification from a file.
263 * NOTE: If !o, memory is allocated directly from the heap by nmem_malloc().
264 */
265Z_Espec1 *data1_read_espec1 (data1_handle dh, const char *file)
266{
267 FILE *f;
268 NMEM nmem = data1_nmem_get (dh);
269 int lineno = 0;
270 int argc, size_esn = 0;
271 char *argv[50], line[512];
272 Z_Espec1 *res = (Z_Espec1 *)nmem_malloc(nmem, sizeof(*res));
273
274 if (!(f = yaz_path_fopen(data1_get_tabpath(dh), file, "r")))
275 {
276 yaz_log(LOG_WARN|LOG_ERRNO, "%s", file);
277 return 0;
278 }
279
280 res->num_elementSetNames = 0;
281 res->elementSetNames = 0;
282 res->defaultVariantSetId = 0;
283 res->defaultVariantRequest = 0;
284 res->defaultTagType = 0;
285 res->num_elements = 0;
286 res->elements = 0;
287
288 while ((argc = readconf_line(f, &lineno, line, 512, argv, 50)))
289 if (!strcmp(argv[0], "elementsetnames"))
290 {
291 int nnames = argc-1, i;
292
293 if (!nnames)
294 {
295 yaz_log(LOG_WARN, "%s:%d: Empty elementsetnames directive",
296 file, lineno);
297 continue;
298 }
299
300 res->elementSetNames =
301 (char **)nmem_malloc(nmem, sizeof(char**)*nnames);
302 for (i = 0; i < nnames; i++)
303 {
304 res->elementSetNames[i] = (char *)
305 nmem_malloc(nmem, strlen(argv[i+1])+1);
306 strcpy(res->elementSetNames[i], argv[i+1]);
307 }
308 res->num_elementSetNames = nnames;
309 }
310 else if (!strcmp(argv[0], "defaultvariantsetid"))
311 {
312 if (argc != 2)
313 {
314 yaz_log(LOG_WARN, "%s:%d: Bad # of args for %s",
315 file, lineno, argv[0]);
316 continue;
317 }
318 if (!(res->defaultVariantSetId =
319 odr_getoidbystr_nmem(nmem, argv[1])))
320 {
321 yaz_log(LOG_WARN, "%s:%d: Bad defaultvariantsetid",
322 file, lineno);
323 continue;
324 }
325 }
326 else if (!strcmp(argv[0], "defaulttagtype"))
327 {
328 if (argc != 2)
329 {
330 yaz_log(LOG_WARN, "%s:%d: Bad # of args for %s",
331 file, lineno, argv[0]);
332 continue;
333 }
334 res->defaultTagType = (int *)nmem_malloc(nmem, sizeof(int));
335 *res->defaultTagType = atoi(argv[1]);
336 }
337 else if (!strcmp(argv[0], "defaultvariantrequest"))
338 {
339 if (!(res->defaultVariantRequest =
340 read_variant(argc-1, argv+1, nmem, file, lineno)))
341 {
342 yaz_log(LOG_WARN, "%s:%d: Bad defaultvariantrequest",
343 file, lineno);
344 continue;
345 }
346 }
347 else if (!strcmp(argv[0], "simpleelement"))
348 {
349 Z_ElementRequest *er;
350 Z_SimpleElement *se;
351 Z_ETagPath *tp;
352 char *path = argv[1];
353 char *ep;
354 int num, i = 0;
355
356 if (!res->elements)
357 res->elements = (Z_ElementRequest **)
358 nmem_malloc(nmem, size_esn = 24*sizeof(er));
359 else if (res->num_elements >= (int) (size_esn/sizeof(er)))
360 {
361 Z_ElementRequest **oe = res->elements;
362 size_esn *= 2;
363 res->elements = (Z_ElementRequest **)
364 nmem_malloc (nmem, size_esn*sizeof(er));
365 memcpy (res->elements, oe, size_esn/2);
366 }
367 if (argc < 2)
368 {
369 yaz_log(LOG_WARN, "%s:%d: Bad # of args for %s",
370 file, lineno, argv[0]);
371 continue;
372 }
373
374 res->elements[res->num_elements++] = er =
375 (Z_ElementRequest *)nmem_malloc(nmem, sizeof(*er));
376 er->which = Z_ERequest_simpleElement;
377 er->u.simpleElement = se = (Z_SimpleElement *)
378 nmem_malloc(nmem, sizeof(*se));
379 se->variantRequest = 0;
380 se->path = tp = (Z_ETagPath *)nmem_malloc(nmem, sizeof(*tp));
381 tp->num_tags = 0;
382 /*
383 * Parse the element selector.
384 */
385 for (num = 1, ep = path; (ep = strchr(ep, '/')); num++, ep++)
386 ;
387 tp->tags = (Z_ETagUnit **)
388 nmem_malloc(nmem, sizeof(Z_ETagUnit*)*num);
389
390 for ((ep = strchr(path, '/')) ; path ;
391 (void)((path = ep) && (ep = strchr(path, '/'))))
392 {
393 if (ep)
394 ep++;
395
396 assert(i<num);
397 tp->tags[tp->num_tags++] =
398 read_tagunit(path, nmem, file, lineno);
399 }
400
401 if (argc > 2 && !strcmp(argv[2], "variant"))
402 se->variantRequest=
403 read_variant(argc-3, argv+3, nmem, file, lineno);
404 }
405 else
406 yaz_log(LOG_WARN, "%s:%d: Unknown directive '%s'",
407 file, lineno, argv[0]);
408 fclose (f);
409 return res;
410}
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