1 /* Cross-reference manipulation routines.
2 Copyright (C) 2001,2002 The Genes Development Team
3 This file is part of the Gedcom parser library.
4 Contributed by Peter Verthez <Peter.Verthez@advalvas.be>, 2001.
6 The Gedcom parser library is free software; you can redistribute it
7 and/or modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 The Gedcom parser library is distributed in the hope that it will be
12 useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the Gedcom parser library; if not, write to the
18 Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
24 #include "gedcom_internal.h"
28 struct xref_value def_xref_val = { XREF_NONE, "<error>", NULL };
29 static hash_t *xrefs = NULL;
31 char* xref_type_str[] = { N_("nothing"),
35 N_("a multimedia object"),
36 N_("a source repository"),
39 N_("a submission record"),
40 N_("an application-specific record"),
44 struct xref_value xref;
45 Xref_type defined_type;
51 hnode_t *xref_alloc(void *c __attribute__((unused)))
53 return malloc(sizeof *xref_alloc(NULL));
56 void xref_free(hnode_t *n, void *c __attribute__((unused)))
58 struct xref_node *xr = (struct xref_node *)hnode_get(n);
59 free((void*)hnode_getkey(n));
60 free(xr->xref.string);
65 void clear_xref_node(struct xref_node *xr)
67 xr->xref.type = XREF_NONE;
68 /* Make sure that the 'string' member always contains a valid string */
70 xr->xref.string = strdup("");
71 xr->xref.object = NULL;
72 xr->defined_type = XREF_NONE;
73 xr->used_type = XREF_NONE;
74 xr->defined_line = -1;
78 struct xref_node *make_xref_node()
80 struct xref_node *xr = (struct xref_node *)malloc(sizeof(struct xref_node));
81 xr->xref.string = NULL;
92 void make_xref_table()
97 /* Only register initially (if xrefs is still NULL) */
98 /* So that it is only registered once */
99 atexit(cleanup_xrefs);
100 xrefs = hash_create(HASHCOUNT_T_MAX, NULL, NULL);
101 hash_set_allocator(xrefs, xref_alloc, xref_free, NULL);
104 int check_xref_table()
109 struct xref_node *xr;
111 /* Check for undefined and unused xrefs */
112 hash_scan_begin(&hs, xrefs);
113 while ((node = hash_scan_next(&hs))) {
114 xr = (struct xref_node *)hnode_get(node);
115 if (xr->defined_type == XREF_NONE && xr->used_type != XREF_NONE) {
116 gedcom_error(_("Cross-reference %s used on line %d is not defined"),
117 xr->xref.string, xr->used_line);
120 if (xr->used_type == XREF_NONE && xr->defined_type != XREF_NONE) {
121 gedcom_warning(_("Cross-reference %s defined on line %d is never used"),
122 xr->xref.string, xr->defined_line);
129 struct xref_value *gedcom_parse_xref(char *raw_value,
130 Xref_ctxt ctxt, Xref_type xref_type)
132 struct xref_node *xr = NULL;
134 hnode_t *node = hash_lookup(xrefs, raw_value);
136 xr = (struct xref_node *)hnode_get(node);
139 char *key = strdup(raw_value);
140 xr = make_xref_node();
141 xr->xref.type = xref_type;
142 free(xr->xref.string);
143 xr->xref.string = strdup(raw_value);
144 hash_alloc_insert(xrefs, key, xr);
147 if (ctxt == XREF_DEFINED && xr->defined_type == XREF_NONE) {
148 xr->defined_type = xref_type;
149 xr->defined_line = line_no;
151 else if (ctxt == XREF_USED && xr->used_type == XREF_NONE) {
152 xr->used_type = xref_type;
153 xr->used_line = line_no;
156 if ((ctxt == XREF_DEFINED && xr->defined_type != xref_type)
157 || (ctxt == XREF_USED &&
158 (xr->defined_type != XREF_NONE && xr->defined_type != xref_type))) {
159 gedcom_error(_("Cross-reference %s previously defined as pointer to %s, "
161 xr->xref.string, xref_type_str[xr->defined_type],
165 else if ((ctxt == XREF_USED && xr->used_type != xref_type)
166 || (ctxt == XREF_DEFINED &&
167 (xr->used_type != XREF_NONE && xr->used_type != xref_type))) {
168 gedcom_error(_("Cross-reference %s previously used as pointer to %s, "
170 xr->xref.string, xref_type_str[xr->used_type], xr->used_line);