1 /* The IGEN simulator generator for GDB, the GNU Debugger.
3 Copyright 2002-2013 Free Software Foundation, Inc.
5 Contributed by Andrew Cagney.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
47 filter_parse (filter **filters, const char *filt)
49 while (strlen (filt) > 0)
53 /* break out a member of the filter list */
54 const char *flag = filt;
55 unsigned /*size_t */ len;
56 filt = strchr (filt, ',');
59 filt = strchr (flag, '\0');
67 /* find an insertion point - sorted order */
69 while (*last != NULL && strncmp (flag, (*last)->member, len) > 0)
70 last = &(*last)->next;
72 && strncmp (flag, (*last)->member, len) == 0
73 && strlen ((*last)->member) == len)
74 continue; /* duplicate */
75 /* create an entry for that member */
76 new_filter = ZALLOC (filter);
77 new_filter->member = NZALLOC (char, len + 1);
78 strncpy (new_filter->member, flag, len);
80 new_filter->next = *last;
87 filter_add (filter **set, filter *add)
93 cmp = 1; /* set->member > add->member */
95 cmp = strcmp ((*set)->member, add->member);
99 filter *new = ZALLOC (filter);
100 new->member = NZALLOC (char, strlen (add->member) + 1);
101 strcpy (new->member, add->member);
113 /* not reached insertion point */
121 filter_is_subset (filter *superset, filter *subset)
128 if (superset == NULL)
129 return 0; /* subset isn't finished */
130 cmp = strcmp (subset->member, superset->member);
132 return 0; /* not found */
134 subset = subset->next; /* found */
136 superset = superset->next; /* later in list? */
142 filter_is_common (filter *l, filter *r)
151 cmp = strcmp (l->member, r->member);
155 return 1; /* common member */
163 filter_is_member (filter *filt, const char *flag)
168 if (strcmp (flag, filt->member) == 0)
178 is_filtered_out (filter *filters, const char *flags)
180 while (strlen (flags) > 0)
183 filter *filt = filters;
184 /* break the string up */
185 char *end = strchr (flags, ',');
187 unsigned /*size_t */ len;
190 end = strchr (flags, '\0');
198 /* check that it is present */
203 if (strncmp (flags, filt->member, len) == 0
204 && strlen (filt->member) == len)
220 filter_next (filter *set, char *member)
224 if (strcmp (set->member, member) > 0)
233 dump_filter (lf *file, char *prefix, filter *set, char *suffix)
236 lf_printf (file, "%s", prefix);
237 member = filter_next (set, "");
242 lf_printf (file, "%s", member);
243 member = filter_next (set, member);
246 lf_printf (file, ",");
249 lf_printf (file, "%s", suffix);
255 main (int argc, char **argv)
257 filter *subset = NULL;
258 filter *superset = NULL;
263 printf ("Usage: filter <subset> <filter> ...\n");
267 /* load the filter up */
268 filter_parse (&subset, argv[1]);
269 for (i = 2; i < argc; i++)
270 filter_parse (&superset, argv[i]);
272 /* dump various info */
273 l = lf_open ("-", "stdout", lf_omit_references, lf_is_text, "tmp-filter");
277 dump_filter (l, "{", subset, " }");
278 if (filter_is_subset (superset, subset))
279 lf_printf (l, " subset of ");
281 lf_printf (l, " !subset of ");
282 dump_filter (l, "{", superset, " }");
287 dump_filter (l, "{", subset, " }");
288 if (filter_is_common (subset, superset))
289 lf_printf (l, " intersects ");
291 lf_printf (l, " !intersects ");
292 dump_filter (l, "{", superset, " }");
297 filter *memb = subset;
300 lf_printf (l, "%s", memb->member);
301 if (filter_is_member (superset, memb->member))
302 lf_printf (l, " in ");
304 lf_printf (l, " !in ");
305 dump_filter (l, "{", superset, " }");
313 filter_add (&add, superset);
314 filter_add (&add, subset);
315 dump_filter (l, "{", add, " }");
316 lf_printf (l, " = ");
317 dump_filter (l, "{", subset, " }");
318 lf_printf (l, " + ");
319 dump_filter (l, "{", superset, " }");